WO2014098116A1

WO2014098116A1 - Check valve, cap with check valve, jetting pump provided with check valve, and fluid vessel

Info

Publication number: WO2014098116A1
Application number: PCT/JP2013/083859
Authority: WO
Inventors: 正典反本
Original assignee: 株式会社テクノクラーツ
Priority date: 2012-12-20
Filing date: 2013-12-18
Publication date: 2014-06-26

Abstract

Provided are: a check valve that is highly reliable with respect to sealing, is easily mass produced, and is compact; a check valve cap; a jetting pump provided with a check valve, and a fluid vessel. The check valve has a base (51), which is provided with a valve hole (52), and a film (71), which opens and closes the valve hole (52). The check valve (41) has a seal surface at the top surface thereof that is attached to an attachment subject. The film (71) overlaps in a manner so as to cover the valve hole (52) excepting a portion of the top surface of the base (51), and is adhered to a covered section in a manner so that: a discharge opening (76) is provided at a portion of the boundary line between the covered section at which the film (71) overlaps and a non-covered section at which the film does not overlap; and a discharge pathway is formed from the valve hole (52) to the discharge opening (76). The seal surface includes a portion of the boundary line, of the seal surface, the covered section at which the film (71) overlaps is adhered in a manner so that there is no greater than a predetermined level difference at the boundary with the non-covered section.

Description

Check valve, cap with check valve, jet pump including the check valve, and fluid container

The present invention relates to a check valve composed of a base and a film stacked on the base, a cap with a check valve, a jet pump including the check valve, and a fluid container.

As a container capable of pouring liquid while preventing the oxidization of the liquid contained by preventing the outside air from entering the container main body containing a liquid such as soy sauce, valve holes are formed at positions that do not overlap each other in plan view. An extraction container having a check valve constructed by stacking two thin-film valve bodies is developed (see, for example, Patent Document 1).

A discharge container in which a check valve is formed by adhering a film that opens and closes an opening to the entire upper surface of a flat base having an opening, and the entire circumference of the film excluding the discharge port is sandwiched and bonded by a head member An automatic opening / closing device has also been developed (see, for example, Patent Document 2).

JP 2011-111202 A Japanese Patent Laid-Open No. 8-198300

In the pouring container described in Patent Document 1, it is necessary to process the two valve bodies so that the valve holes do not overlap each other when they have the same dimensions and are overlapped. Moreover, it is necessary to attach these two valve bodies to the container without shifting each other.

Also in the automatic opening / closing device of the discharge container described in Patent Document 2, the film sandwiched between the base and the head is processed so that the shape matches the upper surface of the base, and is positioned and adhered in the circumferential direction. It is necessary and processing accuracy is required. In addition, this automatic opening and closing device can discharge fluid from the edge of the base, but for example, when attached to a cap as in Patent Document 1, the flow path is blocked and the fluid cannot be discharged, and the application is Limited.

An object of the present invention is to provide a check valve, a cap with a check valve, a jet pump provided with the check valve, and a fluid container that are easy to downsize and mass-produce and have high reliability with respect to a seal.

The present invention includes a base having a valve hole and a film bonded to the upper surface of the base so that the valve hole can be freely opened and closed, and a check surface having a seal surface attached to a mounted portion on the upper surface. The film is stacked so that the film covers the valve hole except for a part of the upper surface of the base, and the film is not overlapped with the covering portion on which the film is stacked. A discharge port is formed on the upper surface of the base at a part of the boundary line with the cover portion, and further, the discharge portion is bonded to the cover portion so as to form a discharge path from the valve hole to the discharge port. The fluid can be discharged from the valve hole to the discharge port without forming a discharge hole in the film in a state of being attached to the attached portion via the sealing surface, and the seal surface includes a part of the boundary line. The film of the sealing surface is overlaid The covering portion is bonded so as to be equal to or less than a predetermined step at the boundary with the non-covering portion, and the predetermined step is directly connected to the check valve via the seal surface without interposing a gasket on the attached portion. It is a check valve characterized by being a liquid-tight or air-tight step when attached.

In the check valve of the present invention, the discharge port is formed by partially overlapping and adhering the film to the upper surface of the base. Since the fluid can be discharged from the valve hole to the discharge port without forming the discharge hole in the film, the step of forming the discharge hole in the film is unnecessary. Furthermore, even if there is a covered part with a film and a non-covered part with no film on the seal surface attached to the attached part, there is no step at the boundary or even if there is a step. Small, specifically, when the film is directly attached to the mounted part without a gasket interposed via the sealing surface, the film is adhered to the base so as to be a liquid-tight or air-tight step. The film can be easily arranged without being particularly conscious. As a result, the check valve does not require high-precision processing and positioning during manufacturing, is easy to downsize and mass-produce, and can be manufactured at low cost. Further, unlike the circular discharge port, this check valve uses the end portion of the film as the discharge port, so that the apparent width of the discharge port in the discharge direction is zero. For this reason, the distance between the valve hole and the discharge port can be increased, and the reliability with respect to the seal is high.

In the check valve of the present invention, the seal surface is provided at a peripheral edge portion of the upper surface of the check valve, and an end portion of the film covering the seal surface coincides with an outer peripheral edge of the base. And

According to the present invention, since the end of the film covering the sealing surface and the outer peripheral edge of the base coincide with each other, when the check valve is manufactured, the film is placed on the base and the necessary portions are bonded. Then, the film can be cut along the outer peripheral edge of the base, so that the production is very simple.

Moreover, in the check valve of the present invention, the adhesion method between the base and the film is such that the film is placed on the base, a glass plate is further placed on the film, and the glass plate is Laser that irradiates laser, welds the base and the film, and stops the laser irradiation in a state where the glass plate is placed, thereby cooling and contracting the welded portion, and realizing laser below the predetermined step It is a welding method.

Further, the check valve of the present invention may be configured such that, in the laser welding method, the film is sucked through the valve hole of the base in place of placing the glass plate or in a state where the glass plate is placed. The above operation is performed in a state where a film is brought into close contact with the base and the film is brought into close contact with the base.

According to the present invention, since the boundary between the part covered with the film and the part not covered with the film can be set to a predetermined level or less by laser welding, mass production is easy.

The check valve of the present invention is further characterized in that positioning means for restricting the rotation of the check valve in the circumferential direction relative to the mounted portion to which the check valve is attached is provided on the upper surface of the base.

According to the present invention, since the positional relationship between the check valve and the attached portion is regulated by the positioning means, for example, the positional relationship between the valve hole and the spout provided in the attached portion is always preferable. Can be maintained in a state. Further, since the check valve and the mounted portion can be positioned, the check valve can be easily attached to the mounted portion.

The check valve of the present invention further includes a spacer having a certain thickness and adhered to the upper surface of the check valve at the same position as the seal surface, and the predetermined step is replaced with the seal. When the spacer is attached to the surface, it is a step that can be liquid-tight or air-tight without interposing a gasket.

The check valve of the present invention further has a constant thickness, includes a spacer bonded to the upper surface of the check valve at the same position as the seal surface, and is attached to the attached portion via the spacer instead of the seal surface. Even when the attached portion is flat, the opening and closing allowance of the film can be reliably ensured. Such a check valve can be used for many purposes. Furthermore, since the sealing surface and the spacer are bonded in a liquid-tight or air-tight manner, the reliability is high.

The present invention also includes the check valve and a cap to which the check valve is attached. The cap has a top tube shape, and has a spout that discharges the fluid discharged from the discharge port at the top. A cap provided with a connecting means for connecting to a mouth portion of a container body containing fluid in a cylinder portion, and a sealing means for sealing the mouth portion of the container body over the entire circumference on a ceiling surface, The cap includes a step portion on which the check valve can be attached in a liquid-tight or air-tight state as an attached portion to which the check valve is attached, inside the sealing means on the ceiling surface. It is a cap with a valve.

According to the present invention, the check valve of the present invention can be easily attached to a cap used for a dispensing container or the like, mass production of the cap with the check valve is easy, and the cap with the check valve can be manufactured at low cost. Can be offered at.

In addition, the present invention is attached to the mouth portion of the container main body that contains the fluid, and has a fluid suction port, a jet path, and a jet port. The piston sucks the fluid from the suction port and ejects the fluid from the jet port. It is an ejection pump, Comprising: It is an ejection pump characterized by providing one or more said check valves in any one or more places among the said suction inlet, the said ejection path | route, or the said ejection outlet.

Further, the present invention is a fluid container comprising the check valve, the cap with the check valve, or the ejection pump.

The present invention also includes a container main body that contains a fluid, a cap having a spout and attached to the mouth of the container main body, and the check valve, and the container main body is connected to the cap. A self-supporting outer container having a mouth and an inner container housed in the outer container and containing fluid, and the fluid contained in the inner container can be discharged from the mouth by pushing the outer container. The outer container includes an air hole for introducing air into a gap between the inner container and a check valve for the outer container that is attached to the air hole and prevents outflow of air to the outside. The outer container check valve is the check valve, and the container main body and the cap include connecting means that cannot remove the cap once the cap is attached to the mouth of the container main body. The check valve Further, the lower surface is provided with sealing means for sealing the mouth portion of the container body over the entire circumference, the sealing means is in airtight contact with the mouth portion of the container body, and the upper surface is liquid-tight to the attached portion of the cap. Further, the check valve is attached in such a direction that the valve hole is located on the opposite side of the center of the check valve with respect to the outlet of the cap. It is a fluid container.

The check valve of the present invention is easy to process and position and is suitable for mass production and miniaturization. Further, the check valve of the present invention can increase the distance between the valve hole and the discharge port, and is highly reliable for the seal. Further, the check valve of the present invention can be easily mounted and positioned on the existing fluid container cap, jet pump, and fluid container. The cap with the check valve, the jet pump including the check valve of the present invention, fluid Containers can be mass-produced at low cost.

It is principal part sectional drawing of the extraction container 1 of 1st Embodiment of this invention. It is a figure for demonstrating the structure of the non-return valve 41 of the extraction container 1 of FIG. It is a figure which shows the modification of the non-return valve of this invention. It is a figure which shows the modification of the non-return valve of this invention. It is principal part sectional drawing of the extraction container 2 of 2nd Embodiment of this invention. It is principal part sectional drawing of the extraction container 3 of 3rd Embodiment of this invention. It is a figure which shows the structure of the non-return valve 4 with a cover of 4th Embodiment of this invention. It is sectional drawing of the pump container 5 of 5th Embodiment of this invention. It is principal part sectional drawing of the extraction container 6 of 6th Embodiment of this invention. FIG. 10 is a perspective view of the mouth portion 15 of the container body 130 of FIG. 9. FIG. 10 is a perspective view of the cap 140 of FIG. 9. FIG. 10 is a perspective view of the check valve 150 of FIG. 9.

FIG. 1 is a cross-sectional view of an essential part of a dispensing container 1 according to the first embodiment of the present invention. FIG. 2 is a view for explaining the configuration of the check valve 41 of the dispensing container 1 of FIG. The dispensing container 1 according to the first embodiment of the present invention is a fluid container that contains a fluid, and includes a container body 11 and a cap 21 that is detachably coupled to a mouth portion 15 of the container body 11. A check valve 41 including a base 51 and a film 71 is provided. This prevents intrusion of an external fluid such as air into the container body 11 and prevents the contents contained therein from being oxidized or corroded.

The fluid container means a general container that can contain fluid and discharge the contained fluid, and is not limited to a specific configuration and structure.

The container body 11 is provided with a mouth 15 serving as a fluid inlet / outlet at the tip of a rounded shoulder as seen in a plastic bottle container. A male screw 16 to which the cap 21 is screwed is provided on the outer peripheral surface of the mouth portion 15 in the same manner as in a plastic bottle container or the like. Here, the container body with the mouth 15 provided at the tip of the shoulder is shown, but it is possible to use a container body according to the contents, and the shape and structure are as described above. It is not limited.

Further, a container body (not shown) having a bellows in which the inside of the container body is forcibly depressurized by the shape restoration property described in Japanese Patent Application No. 2012-101940 filed by the applicant of the present application. A wide range of container bodies can be used such as the container body 6 and the double-structured container body used in the pouring container described in JP 2011-230840 A. In addition, in the pump container 5 of 5th Embodiment mentioned later, the container main body 12 which combined these is used, You may use this for the extraction | pouring container 1 of this embodiment. Further, a liquid paper container provided with a folding line that shrinks while the contents described in PCT / JP2013 / 065781 filed by the applicant of the present application are extracted can be suitably used.

The material of the container body 11 is not limited to a specific material. Depending on the contents to be stored, thermal stability, prevention of deterioration by ultraviolet rays, antistatic, antioxidant, water vapor barrier, other gas barrier properties (gas barrier properties), aroma storage properties, light shielding properties, etc. are required. In such a case, the container body may be formed using a material suitable for the required specifications as appropriate.

Plastics, composites, and laminates with excellent oxygen barrier properties include polyamides, polyvinyl alcohol, ethylene / vinyl alcohol copolymer (EVOH), polyvinylidene chloride (PVDC), polyvinylidene chloride-methyl acrylate copolymer, PET , Nanocomposite coated PET, silica coated PET, alumina coated PET, stretched polypropylene / aluminum foil / low density polyethylene laminate, PET / ethylene vinyl alcohol copolymer / low density polyethylene laminate, polyvinylidene chloride coated polypropylene, poly Examples include vinylidene chloride coated PET. However, plastics, synthetic resins, composite materials, laminated materials, and materials other than these, which are excellent in oxygen barrier properties, and materials other than plastics and synthetic resins may be used.

Examples of plastics, composites, and laminates that have excellent water vapor barrier properties include high-density polyethylene, low-density polyethylene, polyvinylidene chloride-coated stretched polypropylene, and polyvinylidene chloride-coated PET. However, plastics, synthetic resins, composite materials, laminated materials, and materials other than these, which are excellent in water vapor barrier properties, and materials other than plastics and synthetic resins may be used.

Plastics, composites, and laminates with excellent oxygen barrier properties and water vapor barrier properties include stretched polypropylene / aluminum foil / low density polyethylene laminate, ceramic vapor-deposited PET / low density polyethylene laminate, polyvinylidene chloride coated stretched polypropylene, poly Examples include vinylidene chloride coated PET. However, plastics, synthetic resins, composite materials, laminated materials, and materials other than these, which are excellent in oxygen barrier properties and water vapor barrier properties, may be used.

Plastics, composites and laminates with excellent aroma storage stability include ethylene vinyl alcohol copolymer, PET, PET / low density polyethylene, stretched polypropylene / aluminum foil / low density polyethylene laminate, PET / ethylene vinyl alcohol copolymer. / Low density polyethylene laminate, ceramic vapor deposited PET, ceramic vapor deposited PET / low density polyethylene laminate. However, materials other than these, such as plastics, synthetic resins, composite materials, laminated materials, and materials other than plastics and synthetic resins, which are excellent in storability, may be used.

The contents that can be accommodated in the container body 11 are not limited to a specific fluid, and can contain and dispense a wide variety of fluids. The contents include a relatively low viscosity liquid such as soy sauce, a viscous fluid such as mayonnaise, a gas such as sampling gas, a granular material such as wheat flour, a slurry solution, and a suspension in which solids are suspended in the liquid. Examples include turbid solutions. Typical soy sauce has a viscosity of about 5 to 6 mPa · s at a temperature of 20 ° C., and mayonnaise has a viscosity of about 2 to 100 Pa · s.

The cap 21 has a top cylindrical shape having a spout 23 for pouring the contents at the top 22 and is made of a synthetic resin material. However, the material of the cap 21 is not limited to a specific material, and examples of the material include synthetic resin, metal, glass, carbon, sintered material, and wood. These composite materials, vapor deposition, A material whose surface is coated with metal by coating, plating, metal foil, or the like may be used, and it can be appropriately selected and used according to the application, contents, and the like. For example, in order to prevent oxygen from entering the container body 11 through the cap 21, the cap 21 may be formed of a plastic, a composite material, a laminated material, or other materials having excellent oxygen barrier properties and air barrier properties.

The shape of the spout 23 of the cap 21 is not limited to a specific shape, and may be, for example, a cylindrical shape or a rectangular tube shape.

Sealing means 25 is formed on the ceiling surface 24 of the cap 21 over the entire circumference of the inner end of the mouth 15 of the container body 11 for sealing. A step portion 26 serving as an attachment portion is formed in a ring shape from the ceiling surface 24 with a certain thickness over the entire circumference. The shape of the step portion 26 is not limited to a specific shape, and may be a rectangle, a triangle, or the like in plan view. However, the check valve 41 and the check valve 41 are airtight in the entire periphery and are described later. The valve hole 52, the discharge path 75, and the discharge port 76 need to have a shape that can be bonded.

The sealing means 25 has a cylindrical shape, and an outer peripheral surface is formed in a tapered shape so as to be guided and fitted into the inner periphery of the tip of the mouth portion 15. The sealing means 25 performs sealing by closely contacting the outer peripheral surface so that the inner periphery of the tip of the mouth portion 15 is bitten.

The thickness of the stepped portion 26 is not limited to a specific thickness as long as the opening and closing allowance of the film 71 of the check valve 41 is ensured, but the excessive lift of the film 71 at the time of valve opening is suppressed. Setting the thickness in this manner is preferable because it can prevent the film 71 from being damaged and the sealing performance from being lowered due to residual strain.

A female screw 28 that is screwed into the male screw 16 of the mouth portion 15 of the container body 11 is provided on the inner peripheral surface of the cylindrical portion 27 of the cap 21. In addition, the connection method of the cap 21 and the opening | mouth part 15 of the container main body 11 is not limited to screwing, For example, fitting using a snap fit, press fit, adhesion | attachment, etc. may be sufficient. The cap 21 may be provided with a lid (not shown) for sealing the spout 23 so as to be opened and closed via a hinge or the like.

The check valve 41 includes a base 51 having a valve hole 52, and a thin film film 71 that is overlapped and bonded to the base 51 so that the valve hole 52 can be freely opened and closed. A fluid discharge path 75 and a discharge port 76 are formed with the lower surface of the container, and when the valve is opened, the contents of the container body 11 are introduced from the valve hole 52 to flow through the discharge path 75 and discharged from the discharge port 76. Intrusion of external fluid into the main body 11 is prevented.

The base 51 is a disc having a valve hole 52, and examples of the material include synthetic resin materials such as polyethylene, metal, glass, carbon material, sintered material, wood, and the like. It can be formed of a material appropriately selected according to the application, contents, etc., such as a material whose surface is coated with metal by coating, plating, metal foil or the like. For example, in order to prevent oxygen from entering the container body 11 through the base 51, as with the container body 11 and the cap 21, plastic, composite material, laminated material, and other materials having excellent oxygen barrier properties and air barrier properties can be used. The base 51 may be formed.

The base 51 has a basic shape that is hard to be deformed. However, the base 51 is more rigid than the film 71, and the check valve 41 is lifted from the base 51 when the check valve 41 is opened. When the valve is closed, the rigidity of the film 71 is not particularly limited as long as the film 71 has rigidity to be in close contact with the base 51. The thickness of the base 51 is not limited to a specific thickness.

In FIG. 2, the number of valve holes 52 is three, but the number of valve holes 52 is not limited, and may be one, two, or four or more. Further, the size of the valve hole 52 is not limited to a specific size. The position of the valve hole 52 should just be a position arrange | positioned inside the step part 26 of the cap 21 which is a to-be-attached part at the time of attachment of the non-return valve 41. FIG. The valve hole 52 is not limited to a circular hole, and may be a slit hole, for example. The number, size, and shape of the valve holes 52 may be appropriately selected according to the viscosity of the contents. However, it is difficult for the film 71 to be wrinkled if a plurality of circular holes having a small diameter are provided.

The positional relationship between the valve hole 52 and the spout 23 of the cap 21 is not limited to a specific positional relationship, but the valve hole 52 is opposite to the spout 23 of the cap 21 across the center of the base 51. When the check valve 41 is attached to the cap 21 so as to be disposed on the side, the air in the container main body 11 mixed during filling of the contents, for example, tilts the dispensing container 1 and dispenses the contents. Since it moves to the valve hole 52 side, it tends to be discharged to the outside, which is preferable.

The film 71 is a thin film, and includes a thin film having flexibility, flexibility and stretchability. The thickness of the film 71 is not particularly limited, and can be appropriately selected and used according to the application, contents, material, adhesion method, and the like. However, it is preferable that the film 71 is thin from the viewpoint of sealing performance to the attached portion of the check valve 41, in this embodiment, the stepped portion 26. In this case, it is needless to say that the film 71 functions as a check valve and does not need to be damaged when the film 71 is bonded to the base 51. The sealing property to the step part 26 of the check valve 41 will be described later. As an example of the thickness of the film 71, when the content is a liquid having a relatively low viscosity such as soy sauce (general soy sauce), the thickness is about 10 to several hundred μm for a polyethylene film. However, it is not limited to this value.

Examples of the film 71 include a synthetic resin film such as polyethylene, a stretch film made of synthetic resin, a thin metal film having flexibility and / or flexibility, a carbon film, a glass film, and the like. However, it is not limited to a specific material, and can be appropriately selected and used according to the application, contents, adhesion method to the base 51 and the like. For example, in order to prevent oxygen from entering the container body 11 through the film 71, plastics, composite materials, laminated materials, and other materials having excellent oxygen barrier properties and air barrier properties can be used as in the case of the container body 11 and the like. Good. When oxygen barrier properties and water vapor barrier properties are required at the same time, a multilayer film of a synthetic resin material that prevents air from entering and exiting and a synthetic resin material that prevents drying due to evaporation of moisture, and other oxygen barrier properties and water vapor barriers. Plastics, composite materials, laminated materials, etc. that are excellent in properties can be suitably used. However, since the film 71 is in a thin film shape, it is easier for gas to permeate than the container main body 11 and the like, so it is necessary to select a material in consideration of this point.

Next, the procedure for bonding the film 71 to the upper surface of the base 51 will be described. Fig.2 (a) is a top view of the non-return valve 41 of the extraction container 1 of FIG. In FIG. 2A, the portion with dots is the film 71, and the portion with diagonal lines is the adhesive portion 65.

The check valve 41 has a seal surface 61 at a position where the check valve 41 is in contact with the attached portion to which the check valve 41 is attached on the upper surface, and is adhered to the stepped portion 26 of the cap 21 as the attached portion via the seal surface 61 in an airtight state. Is done. In the check valve 41 of the present embodiment, the entire periphery of the upper surface peripheral portion becomes the seal surface 61 so as to correspond to the stepped portion 26 of the cap 21 that is the attached portion. In FIG. 2A, the seal surface 61 is a region between a virtual line (two-dot chain line) and the edge of the base 51.

The film 71 is overlaid so as to cover the valve hole 52 except for a part of the upper surface of the base 51. At this time, a region covered with the film 71 on the upper surface of the base 51 is referred to as a covering portion 62, and a region not covered with the film 71 is referred to as a non-covering portion 63.

In the film 71, at least a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63 is positioned inside the seal surface 61 so that a discharge port 76 described later is formed inside the seal surface 61. Are overlaid.

Further, the film 71 forms a discharge port 76 with the upper surface of the base 51 at a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63, and the discharge path 75 extends from the valve hole 52 to the discharge port 76. It is adhered at the covering portion 62 so as to form. At this time, if the region where the film 71 is bonded in the covering portion 62 is the bonding portion 65, and the region where the film 71 is not bonded is the non-bonding portion 66, the non-bonding portion 66 becomes the discharge path 75.

The discharge path 75 is formed in a straight line from the valve hole 52 to the discharge port 76, but is not limited to this. For example, a path such as a branch or an assembly may be formed. What is necessary is just to be able to circulate the fluid to the discharge port 76.

The valve hole 52 and the discharge port 76 are not limited to a specific positional relationship as long as they do not overlap with each other. However, if the distance from the valve hole 51 to the discharge port 76 is short, the film 71 becomes the base 51. It is preferable to increase the distance from the valve hole 51 to the discharge port 76 because the fluid may flow backward before the check valve closes in close contact with the valve.

Further, it is preferable that the film 71 has at least a covering portion 62 at the same position as the sealing surface 61 adhered thereto. When the sealing surface 61 of the check valve 41 is bonded to the step portion 26 of the cap 21, the bonding is performed in a state where an unbonded film 71 is interposed between the base 51 and the step portion 26 of the cap 21. In addition, the base 51 and the stepped portion 26 of the cap 21 may not be well bonded, which may result in poor adhesion.

The check valve 41 in which the film 71 is bonded to the base 51 as described above has a discharge hole in the film 71 even when the check valve 41 is bonded to the stepped portion 26 of the cap 21 through the entire periphery of the upper surface peripheral edge (seal surface 61). The contents can be discharged from the discharge port 76 without drilling.

FIG. 2B is a plan view showing a state in which the film material 79 before cutting is stacked on the base 51. In FIG. 2B, the portion with dots is the film material 79 and the portion with diagonal lines is the adhesive portion 65. The check valve 41, for example, covers the valve hole 52 and has a rectangular film material 79 so that a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63 is located inside the sealing surface 61. Is partially overlapped with the upper surface of the base 51, the film material 79 is adhered to the upper surface of the base 51 so that the discharge path 75 and the discharge port 76 are formed, and the film material 79 is attached along the edge of the base 51. Manufactured by cutting method.

Thus, when the film material 79 is bonded so that the covering portion 62 and the bonding portion 65 include the edge of the base 51, the film material 79 can be cut along the edge of the base 51, so that the manufacturing is easy. It is preferable. A manufacturing method is not limited to this, For example, the film 71 cut | disconnected previously may be piled up on the base 51, and may be adhere | attached. However, in this case, it is necessary to perform positioning so that the film 71 exactly overlaps the covering portion 65. On the other hand, the method of cutting the film material 79 after adhering to the base 51 is preferable because positioning is easy when the film material 79 is stacked and bonded.

The method for adhering the film 71 (film material 79) is not limited to a specific method, and methods such as thermal welding and adhesion using an adhesive can be used in addition to laser welding described later. The same applies to the adhesion between the check valve 41 and the cap 21. However, it is necessary to perform bonding in consideration of the following points.

In the case of a dispensing container that prevents the entry of an external fluid, such as air, into the container body 11 and prevents the contained contents from being oxidized or corroded, the base 51 of the film 71 (film material 79) is used. When the sealing portion 61 includes the covering portion 62, the bonding portion 65 needs to be bonded in an airtight manner. If the adhesion of this portion is insufficient, air flows into the container body 11 from the gap between the film 71 and the base 51.

Further, when the seal surface 61 is adhered to the stepped portion 26 of the cap 21 as the attached portion in an airtight state as in the present embodiment, the smoothness of the seal surface 61 is very important. If the seal surface 61 is sufficiently smooth, airtightness can be ensured by directly adhering the seal surface 61 to the step portion 26 of the cap 21 as in this embodiment, but the smoothness of the seal surface 61 is If it is insufficient, it is necessary to interpose a gasket.

In particular, in the check valve 41 formed by partially overlapping the film 71 on the flat base 51, the sealing surface 61 includes the covering portion 62 and the non-covering portion 63. In order to directly adhere to the portion 26 in an airtight state, the boundary between the covering portion 62 and the non-covering portion 63 is important. In order to adhere in an airtight manner, there must be no step between the covering portion 62 and the non-covering portion 63, or a step that can be airtight, if any.

The thickness of the film 71 (film material 79) and the bonding method are greatly involved in the level difference between the covering portion 62 and the non-covering portion 63 included in the seal surface 61. In order to eliminate the step between the covering portion 62 and the non-covering portion 63 included in the sealing surface 61, it is preferable that the thickness of the film 71 (film material 79) is thin. Further, the bonding method is such that when the film 71 is bonded to the base 51, there is no step between the covering portion 62 and the non-covering portion 63, or even if there is a step, a step that can be airtight is formed. Adhesion method is adopted. Hereinafter, in this embodiment, that there is no step between the covering portion 62 and the non-covering portion 63 means that there is no step that can be airtight, that is, no step, in addition to the case where the height is the same and there is no physical step. It shall include a level difference that can be identified.

As an adhesion method that does not cause a step between the covering portion 62 and the non-covering portion 63, a laser welding method described later can be suitably used. In addition, in the bonding method using an adhesive, there is a method in which the film 71 and the base 51 are partially dissolved. A method of thinly processing a region of the base 51 on which the film 71 (film material 79) is superposed in advance is also conceivable. However, the base 51 needs to be processed, and the positions of the base 51 and the film material 79 are further reduced. Matching is required and manufacturing takes time.

FIG. 2C is a cross-sectional view of the main part showing a state in which the base 51 and the film material 79 are welded by laser welding. For the adhesion between the base 51 and the film material 79, for example, laser welding can be suitably used. When performing laser welding, the base 51 is set on the mounting base 85, the valve hole 52 is covered, and a part of the boundary line 64 between the covering portion 62 and the non-covering portion 63 is larger than the seal surface 61. A rectangular film material 79 is partially overlapped on the upper surface of the base 51 so as to be located on the inner side, the whole is pressed by the glass plate 86, and the laser head is scanned from above the glass plate 86. A laser 88 is irradiated from 87.

The laser 88 passes through the glass plate 86 and the film material 79 and is absorbed by the base 51. When the laser 88 is absorbed, the upper surface (bonding portion 65) of the base 51 generates heat and melts, and the film material 79 is welded. At the time of welding, the adhesive portion 65 swells due to heat, but contracts with cooling when the laser irradiation is stopped. At this time, since the glass plate 86 is placed on the bonding portion 65, the bonding portion 65 has the same height as the base 51 on which the film 51 is not stacked or a height at which the same can be seen. For this reason, no step is generated between the covering portion 62 and the non-covering portion 63 included in the sealing surface 61.

After welding, the check valve 41 can be obtained by irradiating the laser 88 along the edge of the base 51 and cutting the film material 79. When laser welding is used in this way, mass production is further facilitated.

Further, when the base 51 and the film material 79 are welded by laser welding, the film material 79 is welded from a state in which the film material 79 is previously pressed by the glass plate 86, which causes a seal failure of the check valve 41 to the film material 79. It is hard for wrinkles to occur.

When the base 51 and the film material 79 are bonded by laser welding, the base 51 needs to be a material that absorbs the laser 88 and the film material 79 needs to be a material that transmits the laser 88. As such a base 51, for example, a known material that absorbs the laser 88 can be appropriately selected and used in addition to a synthetic resin material such as polyethylene to which carbon black or titanium oxide is added. As the film material 79, for example, a known material that transmits the laser 88 can be appropriately selected and used in addition to a synthetic resin film such as a transparent or translucent polyethylene film.

The mounting table 85 is not limited to a specific shape and material as long as the base 51 can be mounted and positioned.

The glass plate 86 prevents the film material 79 from lifting when performing laser welding, and dissipates heat applied to the film material 79. If excessive heat is applied to the film material 79, the film material 79 may be burned out. However, since the heat is radiated by the glass plate 86, the film material 79 is prevented from being burned out. The glass plate 86 may be cooled with cooling air or cooling water.

The glass plate 86 may be a hard heat-resistant glass plate, for example, but is not limited to a specific material as long as it can transmit laser and prevent the film material 79 from being lifted. Moreover, it is not limited to glass.

Further, instead of or in addition to the pressing means such as the glass plate 86, the film material 79 is sucked from the valve hole 52 of the base 51 using a vacuum pump (not shown) or the like, and the film material 79 is drawn into the base 51. It is also possible to perform laser welding while adsorbing (adhering).

As the laser light source used for laser welding, for example, a known laser light source such as a semiconductor laser, a YAG laser, or a carbon dioxide laser can be appropriately selected and used. The intensity of the laser 88 is adjusted so as to match the material and thickness of the base 51, the film material 79, and the glass plate 86, so that the film material 79 and the glass plate 86 are transmitted without melting, and the base 51 is melted. It needs to be adjusted.

Next, the method of use will be illustrated by taking as an example the case where the pouring container 1 is used as a soy sauce bottle for oxidation prevention. After the soy sauce is stored in the flexible container main body 11, the cap 21 to which the check valve 41 is bonded is screwed into the mouth portion 15 of the container main body 11. The mouth portion 15 of the container body 11 is sealed by the sealing means 25 of the cap 21.

After the cap 21 is screwed, the container body 11 is contracted with the dispensing container 1 facing upward. When the container main body 11 is contracted, the inside of the container main body 11 is pressurized and the film 71 is lifted, a gap is formed between the upper surface of the base 51 and the air remaining in the container main body 11 is discharged. Thereby, the inside of the container body 11 is filled with soy sauce, and the check valve 41 prevents air from entering, so the soy sauce is not oxidized.

When pouring soy sauce, if the pouring container 1 is tilted downward, the soy sauce flows into the discharge path 75 from the valve hole 52, the film 71 is lifted by the liquid pressure of the soy sauce, and a gap is formed on the discharge path 75, Soy sauce is discharged from the discharge port 76 and poured from the spout 23.

The remaining amount of soy sauce is reduced, and the liquid pressure is higher than the adhesion force of the film 71 due to the negative pressure in the container body 11 and the adhesion force of the film 71 due to the capillary suction force of the soy sauce interposed in the gap between the base 51 and the film 71. Is small, the film body 71 can be lifted by forcibly contracting the container body 11 and applying internal pressure, and soy sauce can be poured out. The same applies when the contents are gas.

When the dispensing container 1 is returned upward, the film 71 is quickly applied to the upper surface of the base 51 due to the negative pressure in the container body 11 and the capillary suction force of soy sauce interposed in the gap between the base 51 and the film 71. Close valve close. For this reason, air does not enter the container body 11 after the valve is closed.

As described above, the check valve 41 of the dispensing container 1 according to the first embodiment is configured such that the discharge path 75 and the discharge port are formed only by overlapping the film 71 on the base 51 and bonding the film 71 without forming a discharge hole in the film 71. 76 is formed, and the contents can be discharged.

¡After the film is bonded to the base, it is difficult to drill discharge holes in the film without damaging the base, and mass production is difficult. Also, if the discharge holes are drilled before the film is bonded to the base, it is necessary to accurately position the film and the base so that the film discharge holes and the base valve holes do not overlap. It is costly to downsize and difficult to downsize.

The check valve 41 of the dispensing container 1 of this embodiment does not need to be provided with a discharge hole in the film 71, and does not require high-precision processing or positioning, so that mass production and miniaturization are easy. Unlike the circular discharge port, the check valve 41 uses the end portion of the film 71 as the discharge port 76, so that the apparent width of the discharge port 76 in the discharge direction is zero. For this reason, the distance between the valve hole 52 and the discharge port 76 can be increased, and the reliability of the seal is high. For this reason, the dispensing container 1 capable of preventing the oxidation of the contents can be mass-produced at a low cost.

Further, if the discharge port 76 is arranged so as to be always located inside the step portion 26 of the cap 21, the fluid is always supplied regardless of the positional relationship in the circumferential direction between the check valve 41 and the step portion 26 of the cap 21. Since discharge is possible, positioning in the circumferential direction when the check valve 41 is bonded to the step portion 26 of the cap 21 is not required.

Moreover, in the check valve 41, if wrinkles occur in the film material 79 on the discharge path 75, there is a possibility of causing a sealing failure when the valve is closed. If stress is applied to the film material 79 unevenly and the film material 79 shrinks locally, wrinkles may occur in the film material 79. In the check valve 41 of the present invention, one end of the film material 79 at the boundary line 64 between the covering portion 62 and the non-covering portion 63 is not restrained by the edge of the base 51, and the tension applied to the film material 79 at the one end. Is small and rigid. Therefore, even when stress is applied to the film material 79 when the film material 79 is bonded or when the check valve 41 is used, the film material 79 is likely to shrink at one end (discharge port 76), and the discharge path The film material 79 on 75 is less likely to wrinkle.

In particular, when heat is used for bonding between the base 51 and the film material 79, heat is easily transmitted non-uniformly, and thus stress is easily applied to the film material 79. However, in the check valve 41 of the present invention, the discharge path 41 Since it is difficult for wrinkles to form on the top, the laser welding described above can be preferably used.

3 and 4 are views showing a modification of the check valve of the present invention. The check valve shown below can be considered in the same manner as the check valve 41 shown in FIGS. 1 and 2, including the material, the procedure for bonding the base 51 and the film 71, and the like.

FIG. 3A is a plan view of the check valve 41a having a wide range of the discharge path 75a (non-adhered portion 66a). In FIG. 3 (a), the part with dots is the film, and the part with diagonal lines is the bonding part (hereinafter the same in FIGS. 3 (b) to 4 (d)). In the check valve 41 a shown in FIG. 3A, the adhesive portion 65 a of the film 71 coincides with the seal surface 61 in the covering portion 62. Thus, the discharge path (adhesive part and non-adhesive part) of the check valve of the present invention is not limited to a specific range, as long as the discharge path from the valve hole to the discharge port is secured, For example, it may be formed in a gourd shape or the like.

FIG. 3B is a plan view of the check valve 41b in which the discharge port 76b has a wave shape. In the check valve 41b in FIG. 3B, the boundary line 64b between the covering portion 62b and the non-covering portion 63b is wavy. Thus, the shapes of the check valve film and the discharge port of the present invention are not limited to specific shapes.

FIG. 3C is a plan view of a rectangular check valve 41c. In the check valve 41c in FIG. 3C, the base 51c and the film 71c are rectangular. Thus, the shape of the base of the check valve and the film of the present invention is not limited to a specific shape, and may be, for example, a triangle or an ellipse.

FIG. 3D is a plan view of the check valve 41 d in which the seal surface 61 d is located on the inner side of the upper surface peripheral edge portion of the base 51. In FIG. 3D, the seal surface 61d is a region between two rectangular virtual lines (two-dot chain line). The check valve 41 d in FIG. 3D is arranged such that the seal surface 61 d (and the step portion 26 of the cap 21) is along the outer edge of the discharge path 75.

Even in such a case, the check valve of the present invention can discharge fluid if the valve hole, the discharge path, and the discharge port are disposed on the inside of the stepped portion of the cap and can be discharged to the seal surface. And the step part of a cap is not limited to circular. However, when the discharge port overlaps the stepped portion of the cap depending on the direction of adhesion as in the check valve 41d in FIG. 3D, or when the discharge port is positioned outside the stepped portion of the cap, It is necessary to adhere to the step portion of the cap in a state where the outlet is positioned so as to be positioned inside the step portion of the cap.

FIG. 3 (e) is a plan view of a check valve 41e having two boundary lines 64e between the covering portion 62e and the non-covering portion 63e. In the check valve 41e of FIG. 3 (e), the film 71e is overlapped so that the width of the film 71e is narrow and the non-covering portion 63e is divided into two portions with the covering portion 62e interposed therebetween. As described above, the check valve of the present invention only needs to include at least a valve hole in the covering portion, and the film is stacked on the inner side of the sealing surface so that a discharge path and a discharge port can be formed. It may be divided into

FIG. 3 (f) is a plan view of the check valve 41f in which the discharge path 75f and the discharge port 76f are formed at two locations, respectively. In the check valve 41f of FIG. 3 (f), the film 71f is overlapped on both sides with the central non-covering portion 63f interposed therebetween, and the discharge port 76f is formed at a part of the boundary line 64f between the covering portion 62f and the non-covering portion 63f. And are bonded so that the discharge path 75f is formed symmetrically. Such a check valve 41f is provided with a partition in the container body to store different types of chemicals, and mixes when dispensing, for example, a hair dye that mixes two liquids when used. It can use suitably for the extraction container to take out.

Thus, even when the discharge path 75f and the discharge port 76f are formed in two places, the film 71f can be manufactured by simply bonding the film 71f on the base 51 and cutting along the edge of the base 51. Easy. In the check valve of the present invention, the discharge path and the discharge port may be provided at three or more locations.

FIG. 4A is a plan view of a check valve 41g having an adhesive portion 65g along the discharge path 75. FIG. In the check valve 41g of FIG. 4A, a discharge path 75 is linearly formed from the valve hole 52 to the discharge port 76, and the film 71 is attached to the fixed portion 65g along the edge of the discharge path 75. The base 51 is bonded. When the film 71 is bonded in this manner, the bonding time can be shortened as compared with the check valve 41 of the dispensing container 1 of the first embodiment. However, when the entire periphery of the upper peripheral surface of the check valve 41g is bonded to the stepped portion 26 of the cap 21 as the sealing surface 61, the film 71 that is not bonded to the base 51 is sandwiched through the non-bonded portion 66g. Therefore, it is necessary to firmly bond the stepped portion 26 and the base 51 so as not to cause a bonding failure. Further, since the sealing surface 61 includes the covering portion 62 and the non-covering portion 63 and the covering portion 62 of this portion is not bonded, a step is generated between the covering portion 62 and the non-covering portion 63. Therefore, when bonding the entire periphery of the upper surface peripheral portion of the check valve 41g to the stepped portion 26 of the cap 21 as the seal surface 61, it is necessary to interpose a gasket in an airtight manner as necessary.

FIG. 4B is a plan view of the check valve 41 h in which the film 71 h is disposed inside the seal surface 61. In the check valve 41h in FIG. 4B, a discharge path 75 is formed linearly from the valve hole 52 to the discharge port 76, and the film 71h is attached to the fixed portion 65h along the edge of the discharge path 75. Bonded to the base 51, the film 71h is cut along the edge of the bonding portion 65h.

When the film 71h is bonded in this way, the bonding time can be shortened and the amount of film used can be reduced as compared with the check valve 41 of the dispensing container 1 of the first embodiment. Even when the entire periphery of the upper surface of the check valve 41h is adhered to the stepped portion 26 of the cap 21 as the sealing surface 61, the base 51 is directly bonded to the stepped portion 26 in the non-covered portion 63h, resulting in poor adhesion. hard. However, when the film 71h is cut on the base 51, care must be taken so that the base 51 is not damaged when the film 71h is cut and the film 71h on the adhesive portion 65h is not damaged.

FIG. 4C is a plan view of the check valve 41 i in which the film 71 i is cut outside the edge of the base 51. In the check valve 41 i in FIG. 4C, the film 71 i is cut outside the edge of the base 51. Thus, the check valve of the present invention does not necessarily need to cut the film along the edge of the base.

FIG. 4D is a plan view of a check valve 41j in which a slit 77 is provided in the film 71j. The check valve 41j in FIG. 4D is provided with a slit 77 in a portion that becomes the discharge port 76 of the film 71j. By providing the slit 77 at the discharge port 76, even when stress is applied to the film 71j non-uniformly, the stress is relieved by the slit 77, so that generation of wrinkles of the film 71j on the discharge path 75 can be prevented. The method for preventing the generation of wrinkles on the film 71j is not limited to the slit 77. For example, several portions that become the discharge ports 76 of the film 71j may be cut out in a triangle.

FIG. 4 (e) is a plan view of a check valve 41k having a vein-like groove 53 on the upper surface of the base 51k. The check valve 41k shown in FIG. 4 (e) includes a vein-like groove 53 for surely applying a capillary suction force on the discharge path 75 on the upper surface of the base 51k.

The vein-shaped groove 53 includes a straight trunk portion 54 and a plurality of branch portions 55 branched from the trunk portion 54, and a plurality of the vein-like grooves 53 are formed in parallel to the discharge path 75 and to the full width of the discharge path 75. Yes. The branch portions 55 are branched from the trunk portion 54 at an angle, and are formed such that the branch portions 55 of the adjacent trunk portions 54 are staggered.

The shape of the groove 53 is not limited to this, but is appropriately determined so that liquid can easily be interposed between the upper surface of the base 51k and the film 71 when the check valve 41k is used. If the depth of the groove 53 is too deep, the liquid cannot be exchanged smoothly, and should not be deeper than necessary.

In the check valve 41k of FIG. 4 (e), a groove 53 that facilitates the liquid to be interposed between the upper surface of the base 51k and the film 71 is formed in a portion that becomes the discharge path 75 on the upper surface of the base 51k. Therefore, the capillary suction force can be reliably exerted, the adhesion between the upper surface of the base 51k and the film 71 can be enhanced, and the sealing performance can be secured more stably.

FIG. 4 (f) is a plan view of a check valve 41l having a groove 56 across the entire width of the discharge path 75 on the upper surface of the base 51l. The check valve 41l shown in FIG. 4 (f) has a groove 56 on the discharge path 75 on the upper surface of the base 51l for ensuring the capillary suction force over the entire width of the discharge path 75.

The depth and width of the groove 56 are appropriately determined so that liquid can always stay in the groove 56 when the check valve 41l is used. However, if the depth of the groove 56 is too deep, the replacement of the liquid is not smoothly performed. Therefore, the depth of the groove 56 is appropriately determined to be a depth at which the liquid always stays and a depth at which the replacement of the liquid is performed smoothly.

In the check valve 41l shown in FIG. 4 (f), the groove 56 that always retains the liquid is formed across the entire width of the discharge path 75 on the upper surface of the base 51l. The adhesion between the upper surface and the film 71 can be improved, and the sealing performance can be stably secured.

In the check valves 41k and 41l shown in FIG. 4 (e) and FIG. 4 (f), a groove is provided on the upper surface of the base so that liquid is easily interposed between the upper surface of the base and the film. In the check valve of the invention, the shape of the groove is not limited to a specific shape, and for example, a groove such as a round mark or an X mark may be provided. Further, the same effect can be obtained by roughening the surface instead of the groove or providing small irregularities on the surface.

FIG. 5 is a cross-sectional view of the main part of the dispensing container 2 according to the second embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. The dispensing container 2 of the second embodiment has the same basic configuration as the dispensing container 1 of the first embodiment, but includes a spacer 59 instead of the step portion 26 of the cap 21. In addition, since the structure of the container main body 11 and the non-return valve 41 is the same as the extraction container 1 of 1st Embodiment, description is abbreviate | omitted.

The cap 31 of the dispensing container 2 of the second embodiment has no step on the ceiling surface 24 and the inside of the sealing means 25 is flat.

The spacer 59 is a ring-shaped member having a certain thickness. The material of the spacer 59 is not limited to a specific material like the base 51, and an optimal material can be used as appropriate. Depending on the contents to be stored, thermal stability, prevention of deterioration by ultraviolet rays, antistatic, antioxidant, water vapor barrier, other gas barrier properties (gas barrier properties), fragrance storage properties, light shielding properties, etc. are required. For example, when oxygen barrier properties are required, plastics, composite materials, laminated materials, etc. that are excellent in oxygen barrier properties and air barrier properties are used so that oxygen or the like does not permeate through the spacer 59 into the container body 11. The upper surface and the lower surface of the spacer 59 serve as a sealing surface with the ceiling surface 24 of the cap 31 and the sealing surface 61 of the check valve 41, and are adhered to these in an airtight state.

Further, the thickness of the spacer 59 is not limited to a specific thickness as long as the opening and closing allowance of the film 71 is secured as in the case of the step portion 26 of the cap 21 of the dispensing container 1 of the first embodiment. It is preferable to set so as to suppress excessive lifting of the film 71 at the time of opening the valve, which can prevent deterioration of the sealing performance due to damage to the film 71 and residual strain. Further, the shape of the spacer 59 is not limited to a specific shape, like the step portion 26 of the cap 21 of the dispensing container 1 of the first embodiment, and may be, for example, a rectangle or a triangle in plan view.

When the dispensing container 2 of the second embodiment is manufactured, the check valve 41 may be bonded to the spacer 59 after the spacer 59 is bonded to the cap 31, or the check valve 41 to which the spacer 59 is bonded in advance. May be bonded to the cap 31 via the upper surface of the spacer 59.

In the case of the dispensing container 2 of the second embodiment, the sealing surface 61 on the upper surface of the check valve 41 is bonded to the lower surface of the spacer 59, so the sealing performance of this portion is important. About this part, what is necessary is just to consider similarly to the sealing performance of the sealing surface 61 of the upper surface of the non-return valve 41 of the extraction container 1 of 1st Embodiment, and the step part 26 of the cap 21. FIG.

When the spacer 59 is used as in the dispensing container 2 of the second embodiment, the check valve 41 can be easily attached to a cap having a flat ceiling surface 24 where the step portion 26 is not provided, and the film 71 The opening and closing allowance can be ensured. For this reason, the check valve 41 can be easily attached to a cap or the like of a commercially available fluid container, and mass production is easy.

FIG. 6 is a cross-sectional view of the main part of the dispensing container 3 according to the third embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. The pouring container 3 of the third embodiment has the same basic configuration as the pouring container 1 of the first embodiment, but the direction of the pouring outlet 33 of the cap 32 is different. In addition, since the structure of the container main body 11 and the non-return valve 41 is the same as the extraction container 1 of 1st Embodiment, description is abbreviate | omitted.

In the cap 32 of the dispensing container 3 according to the third embodiment, the spout 33 is formed in a lateral L-shape at the top 22, and fluid is poured out in the horizontal direction. Thus, the fluid dispensing direction of the dispensing container of the present invention is not limited to a specific direction.

FIG. 7 is a view showing a configuration of a check valve 4 with a cover according to a fourth embodiment of the present invention. 7A is a cross-sectional view of the check valve with cover 4 according to the fourth embodiment of the present invention, and FIG. 7B is a check of the check valve with cover 4 of FIG. 4 is a plan view of the valve 41. FIG. Further, in FIG. 7B, a portion to which dots are attached is a film 71 and a portion to which diagonal lines are attached is an adhesive portion 65. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. In the check valve with cover 4 of the fourth embodiment, a cover 81 is bonded to the check valve 41 of the dispensing container 1 of the first embodiment.

The cover 81 has a cylindrical shape with a top, and has an opening on a part of the side surface of the cylindrical portion. In the check valve with cover 4, the lower surface of the cylindrical portion of the cover 81, which is a mounted portion, and the seal surface 61 of the check valve 41 are bonded together, and the spout 82 is formed by the opening of the cover 81 and the upper surface of the base 51. Is formed.

Thus, the check valve 41 of the present invention can also be used in a state where a part of the check hole 41, the discharge path 75, and the discharge port 76 are opened without going all around. In addition, such a check valve 4 with a cover includes a mouth of the container body at the lower peripheral edge of the base 51, or a general liquid paper container, and further the contents described in PCT / JP2013 / 065781 filed by the applicant. The container 51 may be attached by adhering to a spout used for a liquid paper container or a pouch container provided with a folding line, which shrinks while the object is poured out. It can also be screwed into the mouth of the main body.

FIG. 8 is a cross-sectional view of the pump container 5 according to the fifth embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted. The pump container 5 according to the fifth embodiment is a pump container including a container main body 12 that stores the contents 10 and a jet pump 91 that jets the contents 10 stored in the container main body 12. The check valve 41 of the dispensing container 1 of the first embodiment is used as the check valve 91.

The container main body 12 is configured by an inner container 13 that stores the contents 10 and contracts as the stored contents 10 decrease, and an outer container 14 that can always stand by itself while holding and holding the inner container 13. The inner container 13 expands and contracts while being accommodated in the outer container 14, but can always stand by the outer container 14.

The inner container 13 is a cylindrical container having a bellows structure, and the bellows expands and contracts as the contents 10 increase and decrease. The inner container 13 is provided with a mouth portion 15 serving as an inlet / outlet of the contents 10 so as to protrude from the upper surface, and a male screw 16 into which an ejection pump 91 is screwed is provided on the outer peripheral surface of the mouth portion 15. . The inner container 13 is not limited to the bellows structure as long as it can be contracted while the contents 10 are reduced.

The material of the inner container 13 is not limited to a specific material. Depending on the contents to be stored, thermal stability, prevention of deterioration by ultraviolet rays, antistatic, antioxidant, water vapor barrier, other gas barrier properties (gas barrier properties), aroma storage properties, light shielding properties, etc. are required. In such a case, a material suitable for the required specifications may be used as appropriate. This point can be considered similarly to the container main body 11 of the dispensing container of the first embodiment, and the above-described materials can be used.

The contents 10 that can be accommodated in the inner container 13 are not limited to specific contents, and the pump container 5 can accommodate and dispense a wide variety of contents. Examples of the contents 10 include a liquid having a relatively low viscosity such as soy sauce, a viscous fluid such as mayonnaise, a gas such as a sampling gas, a slurry solution, and a suspension solution in which a solid content is suspended in the liquid. .

The outer container 14 is a cylindrical container that is slightly larger than the inner container 13, and an opening 17 having a diameter substantially the same as the outer diameter of the mouth portion 15 of the inner container 13 is provided on the upper surface. Thirteen mouth portions 15 are fitted, and the outer peripheral surface of the mouth portion 15 is adhered to hold the inner container 13. The method for holding the inner container 13 is not limited to this. Further, the outer container 14 has a structure capable of taking air into the inside while holding the inner container 13, and is provided with an air hole (not shown), for example.

The outer container 14 is not limited to a specific shape or structure as long as it can accommodate the inner container 13 and can stand on its own. The material of the outer container 14 is preferably a material that does not easily deform when operating the ejection pump 91, but may be a flexible material as long as it can stand on its own and is limited to a specific material. is not. Unlike the inner container 13, the outer container 14 is not in direct contact with the contents 10, so the material requirements are not as strict as the inner container 13, but the contents 10 also require specific performance for the outer container 14. It is assumed that In such a case, what is necessary is just to select the material according to a request | requirement with reference to the container main body 11 of the extraction container of 1st Embodiment.

The jet pump 91 includes a suction unit 101 having a suction port 102, a jet unit 111 having a jet port 112, and a spring 95 for lifting the jet unit 111, and the suction unit 101 is connected to the mouth portion 15 of the inner container 13. The ejection unit 111 is connected to the suction unit 101 so as to be movable up and down with a spring 95 interposed therebetween, and the contents 10 accommodated in the inner container 13 are sucked from the suction port 102 by the piston operation of the ejection unit 111 and from the ejection port 112. Erupts.

The suction unit 101 is a double cylindrical body, and the inside of the inner cylindrical portion 103 serves as an ejection path 110 through which the contents 10 are circulated, and has a suction port 102 at the lower end of the inner cylindrical portion 103. On the outer peripheral surface of the central portion of the portion 103, a cap portion 104 that can be connected to the mouth portion 15 of the container main body 12 in an airtight state is formed in a top-cylindrical shape, and further for locking the ejection unit 111 so as not to come off. A locking portion 105 is formed in a cylindrical shape from the upper surface of the cap portion 104.

A concave step portion 106 is formed on the inner peripheral surface of the lower end of the inner cylindrical portion 103 of the suction unit 101 so that the check valve 41 is fitted, and the check valve 41 is bonded to the step portion 106. A spring receiving portion 107 into which the spring 95 is fitted is formed on the outer peripheral surface of the upper portion of the inner cylindrical portion 103.

On the inner peripheral surface of the cap portion 104 of the suction unit 101, a female screw 108 that is screwed into the male screw 16 of the mouth portion 15 of the container body 12 is formed. The ceiling surface 109 of the cap portion 104 is tapered at the peripheral edge so as to be in line with the mouth portion 15 of the container main body 11 on the entire periphery.

The upper end of the locking part 105 is formed in a shape that can be locked so that the ejection unit 111 does not come off the suction unit 101.

The material of the suction unit 101 is not limited to a specific material. Examples of the material include synthetic resin, metal, glass, carbon, sintered material, and wood. These composite materials, vapor deposition, coating, and plating are exemplified. Further, a material whose surface is coated with a metal foil or the like may be used, and the material can be appropriately selected and used depending on the application, contents and the like. Moreover, the material of the suction unit 101 can be considered similarly to the container main body 11 and the base 51 described so far.

The ejection unit 111 is a double cylinder connected at the upper part 113, and an ejection port 112 is formed at the upper part 113. In the ejection unit 111, an ejection path 120 is formed in an inverted L shape from the inside of the inner cylindrical portion 114 to the ejection port 112, and the lower end of the inner cylindrical portion 114 serves as the inlet 115 for the contents 10. A check valve 41 is bonded to the lower end surface of the inner cylindrical portion 114.

In the ejection unit 111, the outer diameter of the inner cylindrical portion 114 is substantially the same as the inner diameter of the inner cylindrical portion 103 of the suction unit 101, and the inner diameter of the outer cylindrical portion 116 is substantially the same as the outer diameter of the inner cylindrical portion 103 of the suction unit 101. In the state where the spring 95 is inserted into the spring receiving portion 107 of the suction unit 101, the inner cylindrical portion 114 is inserted into the inner cylindrical portion 103 of the suction unit 101 so as to be vertically movable, and the suction unit 101 is inserted into the outer cylindrical portion 116. The inner cylindrical portion 103 is inserted so as to be movable up and down.

An O-ring 117 that secures the airtightness of the ejection path 110 of the suction unit 101 is attached to the outer peripheral surface near the lower end of the inner cylindrical portion 114 of the ejection unit 111.

At the lower end of the outer cylindrical portion 116 of the ejection unit 111, a stopper 118 that is locked to the locking portion 105 of the suction unit 101 is formed.

The material of the ejection unit 111 is not limited to a specific material like the suction unit 101, and examples of the material include synthetic resin, metal, glass, carbon, sintered material, wood, and the like. A material whose surface is coated with metal by vapor deposition, coating, plating, metal foil, or the like may be used, and it can be appropriately selected and used depending on the application, contents, and the like. Moreover, the material of the suction unit 101 can be considered similarly to the container main body 11 and the base 51 described so far.

At the spout 112, a spray nozzle 96 for spraying the liquid in a mist is mounted. The spray nozzle 96 is not limited to a specific one, and a known spray nozzle can be appropriately selected and used depending on the content 10 to be sprayed, spraying conditions, and the like. Further, the spray nozzle 96 is not necessarily attached.

The spring 95 has an inner diameter that is substantially the same as the outer diameter of the spring receiving portion 107 of the suction unit 101, and the outer diameter is smaller than the inner diameter of the outer cylindrical portion 116 of the ejection unit 111. The spring 95 is inserted into the spring receiving portion 107 of the suction unit 101 and applies an upward force to the ceiling surface 119 of the outer cylindrical portion 116 of the ejection unit 111. The spring 95 has an elastic force that can push up the ejection unit 111 to a state where the stopper 118 is locked to the upper end of the locking portion 105 of the suction unit 101 in a state where no force is applied to the ejection unit 111 from the outside. Is used.

Next, the usage method will be exemplified by using the pump container 5 as an antioxidant soy saucer. After the soy sauce is received from the mouth portion 15 of the container body 12, the ejection pump 91 is attached to the mouth portion 15. When the cap portion 104 of the ejection pump 91 is firmly tightened and screwed into the mouth portion 15 of the container body 11, the taper portion of the ceiling surface 109 of the cap portion 104 and the tip of the mouth portion 15 of the container body 12 come into contact with each other. The fluid can be prevented from entering and exiting from the contact point.

After the ejection pump 91 is attached, the ejection unit 111 is pushed in, and the air remaining in the inner container 13 of the container body 12 and the ejection path 110 of the suction unit 101 is discharged. Thereby, the inside of the inner container 13 and the inside of the ejection path 110 of the suction unit 101 are filled with soy sauce, and the check valve 41 of the ejection unit 111 prevents intrusion of external air, so that the contained soy sauce is oxidized. There is nothing.

When the soy sauce is ejected, when the ejection unit 111 is pushed in, the volume in the ejection path 110 of the suction unit 101 decreases and the pressure increases, the check valve 41 of the suction unit 101 closes, and the check valve of the ejection unit 111 41 opens, soy sauce in the ejection path 110 of the suction unit 101 passes through the check valve 41 of the ejection unit 111 and is sprayed from the ejection port 112 (spray nozzle 96) through the ejection path 120 of the ejection unit 111. .

When the ejection unit 111 is stopped from being pushed in, the ejection unit 111 is lifted by the elastic force of the spring 95. At this time, the volume in the ejection path 110 of the suction unit 101 is increased and the pressure is reduced, the check valve 41 of the ejection unit 111 is closed, the check valve 41 of the suction unit 101 is opened, and the inside of the inner container 13 is opened. Soy sauce passes through the check valve 41 and fills the ejection path 110 of the suction unit 101. At this time, the inner container 13 is reduced in volume and contracted by the volume of the soy sauce that has flowed into the ejection path 110 of the suction unit 101. When the spraying of soy sauce is repeated, the inner container 13 gradually contracts, but the pump container 5 can always stand by the outer container 13.

While the pump container 5 is in use, the check valve 41 of the ejection unit 111 prevents outside air from entering, so that the soy sauce in the inner container 13 and the ejection path 110 of the suction unit 101 may be oxidized. Absent. In addition, the check valve 41 of the ejection unit 111 is quickly moved to the upper surface of the base 51 by the capillary suction force of soy sauce interposed in the gap between the base 51 and the film 71 in addition to the action of negative pressure when the valve is closed. Since the valve is closely closed, the sealing property is good and air can be reliably prevented from entering.

Thus, the check valve 41 according to the present invention can also be suitably used as a check valve for the ejection pump 91. Note that the pump container 5 of the fifth embodiment is a type of pump container that sprays liquid with a spray nozzle 96, but instead of the spray nozzle 96, for example, a publicly known bubble as described in JP-A-8-230919 is used. It can also be used for a pump container (not shown) that ejects liquid in the form of bubbles by using an ejection mechanism.

FIG. 9 is a cross-sectional view of the main part of the dispensing container 6 according to the sixth embodiment of the present invention. FIG. 10 is a perspective view of the mouth portion 15 of the container body 130 of FIG. FIG. 11 is a perspective view of the cap 140 of FIG. FIG. 12 is a perspective view of the check valve 150 of FIG. The same code | symbol is attached | subjected to the structure same as the extraction container 1 of 1st Embodiment shown in FIG. 1, and description is abbreviate | omitted.

The dispensing container 6 of the sixth embodiment includes a double-structured container body 130, a cap 140, and a check valve 150. In the dispensing container 6 of the sixth embodiment, the check 140 and the check 140 are arranged so that the stepped portion 26 of the cap 140 and the distal end surface of the mouth portion 15 of the container main body 130 sandwich the upper and lower peripheral edges of the check valve 150. A valve 150 is attached to the mouth 15 of the container body 130.

The container body 130 is a double container composed of an outer container 131 and an inner container 132, the opening of the inner container 132 is bonded to the mouth 15 of the outer container 131, and the inner container 132 is stored in the outer container 131. The contents are stored in the inner container 132.

The outer container 131 is a flexible and self-supporting container, and includes a male screw 16 and a locking claw 135 on the outer peripheral surface of the mouth portion 15 formed integrally. The locking claw 135 engages with a locking claw 145 provided on the cap 140 described later, and restricts the rotation of the cap 140 once attached so that the cap 140 cannot be easily removed.

The outer container 131 is provided with an air hole 138 for introducing external air into the gap with the inner container 132, and a check valve 41 that prevents the introduced air from flowing out is attached to the air hole 138. Yes. The check valve 41 uses the check valve 41 used in the dispensing container 1 of the first embodiment, but is not limited thereto. The position where the air hole 138 is provided is not limited to a specific position, and may be, for example, the bottom. The material of the outer container 131 can be selected and used according to the required specifications, and can be selected with reference to the container body 11 of the dispensing container of the first embodiment.

The inner container 132 may be any material or structure that shrinks while discharging the contents, and is not limited to a specific one. In addition, the inner container 132 is similar to the container body 11 and the base 51 described so far, in terms of thermal stability, deterioration prevention by ultraviolet rays, antistatic, antioxidant, water vapor barrier, and other gas barrier properties (gas barrier properties). In accordance with requirements such as fragrance storage stability and light shielding properties, materials suitable for the required specifications can be used as appropriate. Although it is preferable that the inner container 132 has a shape restoring property because a negative pressure is forcibly generated in the container and the check valve 150 can be closed quickly and reliably, the shape restoring property is not essential. Further, the inner container 132 may be formed to be peelable from the outer container 131 like a delamination bottle (lamination peeling type container).

The cap 140 has a cylindrical shape with a top, includes a spout 23 at the top 22, a step 26 having a ring-shaped convex portion 141 on the ceiling surface 24, a positioning step 142, and a positioning hole 143. A female screw 28 and a locking claw 145 are provided on the inner peripheral surface. The cap 140 may be provided with a lid (not shown) for sealing the spout 23 so as to be opened and closed via a hinge or the like. The material of the cap 140 may be considered similarly to the cap 21 of the first embodiment.

The ring-shaped convex portion 141 is formed so as to protrude over the entire circumference of the step portion 26, and abuts against the seal surface 61 of the check valve 150 to perform sealing.

The positioning step 142 and the positioning hole 143 regulate the rotation of the check valve 150 in the circumferential direction. The positioning step 142 is provided on both sides of the spout 23 so that a positioning block 153 of the check valve 150, which will be described later, is fitted, and the positioning hole 143 is fitted with a positioning pin 154 of the check valve 150, which will be described later. Two locations are provided at 90 degrees from the center to the spout 23.

The locking claw 145 engages with a locking claw 135 provided in the mouth portion 15 of the container main body 130. The locking claws 135 provided in the mouth portion 15 of the container main body 130 and the locking claws 145 provided in the cap 140 are provided at a plurality of locations over the entire circumference, and engage with each other in the horizontal direction. Thus, the

inclined portions

136 and 146 are formed in a tapered shape and opposite to each other in the circumferential direction, and the end portions 137 and 147 are formed at right angles. When the cap 140 is screwed into the mouth portion 15 of the container body 130 to the end, the inclined portion 146 of the locking claw 145 of the cap 140 gets over the inclined portion 136 of the locking claw 135 of the mouth portion 15 and ends 137 of each other. , The rotation in the direction of removing the cap 140 is restricted.

Note that the locking claw 135 and the locking claw 145 may be provided to engage with each other in the vertical direction. Further, as a connecting means for attaching the cap 140 to the mouth portion 15 so that the cap 140 cannot be easily removed, a method of engaging the cap 140 and the mouth portion 15 using a snap fit (not shown), a method of press-fitting, or the like. It may be used. By adopting a structure in which the cap 140 once attached cannot be easily removed, it is possible to prevent contamination by a third party after filling the contents.

The check valve 150 includes a base 151 and a film 152, a positioning block 153 and a positioning pin 154 on the upper surface of the base 151, and an outer ring-shaped convex portion 155 and an inner ring-shaped convex on the lower surface of the base 151. A portion 156 and a seal cylinder 157 are provided. The check valve 150 is different from the check valve 41 of the first embodiment in that the check valve 150 includes a positioning block 153, a positioning pin 154, an outer ring-shaped convex portion 155, an inner ring-shaped convex portion 156, and a seal cylinder 157. The basic concept including the relationship between the base 151 and the film 152 and the materials thereof is the same as the check valve 41 of the first embodiment and its modification.

The positioning block 153 is formed to protrude at two positions on the upper surface of the base 151 so as to fit inside the positioning step 142. Further, the positioning pins 154 are formed to protrude at two positions on the upper surface of the base 151 so as to be inserted into the positioning holes 143 of the cap 140.

These positioning means attach the check valve 150 in a state where the outlet port 23 of the cap 140 and the valve hole 52 of the base 151 are positioned on the opposite side across the center of the check valve 150. Objective. In this way, as described above, the air in the container main body 130 (inner container 132) mixed when the contents are filled or the like tilts the dispensing container 6 to dispense the contents. This is preferable because it is easily discharged to the outside. For this reason, the positioning block 153 is formed on the opposite side of the valve hole 52 across the center of the check valve 150.

The positioning means is not limited to this, and only one of the positioning block 153 and the positioning pin 154 may be used, or other known positioning means may be used.

The outer ring-shaped convex portion 155 is formed over the entire periphery at the edge of the lower surface of the base 151, and seals with the inner peripheral surface of the cylindrical portion 27 of the cap 140. Further, the outer ring-shaped convex portion 155 is formed to be inclined, and serves as a guide when the check valve 150 is inserted into the cap 140. The inner ring-shaped convex portion 156 is formed over the entire circumference on the inner side of the outer ring-shaped convex portion 155 and seals with the tip surface of the mouth portion 15 of the container main body 130.

The seal tube 157 is formed on the inner side of the inner ring-shaped convex portion 156 over the entire circumference, and the tip portion is formed in a tapered shape. The seal cylinder 157 is drawn into the mouth portion 15 of the container main body 130 by the tapered tip portion, and seals the outer peripheral surface with the inner peripheral surface of the mouth portion 15 of the container main body 130.

In the pouring container 6 of the sixth embodiment, the seal between the cap 140 and the check valve 150 is formed by the ring-shaped convex portion 141 provided on the step portion 26 of the cap 140 and the outer ring-shaped convex portion 155 of the check valve 150. The inner ring-shaped convex portion 156 of the check valve 150 and the seal cylinder 157 seal the check valve 150 and the mouth portion 15 of the container main body 130.

The film 152 includes an insertion hole 158 through which the positioning pin 154 of the base 151 is inserted. The discharge port 76 of the film 152 is formed in front of the positioning block 153. The adhesion procedure of the film 152 is basically the same as that of the check valve 41 of the dispensing container 1 of the first embodiment and its modification, but the check valve 150 is disposed on the lower surface side of the base 151 on the container main body 130. The top surface side of the check valve 150 is not directly connected to the mouth portion 15 of the container body 130, so that the seal surface 61 on the top surface of the check valve 150 is liquid-tight unlike the check valve 41. It only has to be formed as possible.

When the contents stored in the dispensing container 6 of the sixth embodiment are poured out, when the outer container 131 is pushed in, the air between the outer container 131 and the inner container 132 is compressed and pressure is applied to the inner container 132. In addition, the contents pass through the valve hole 52 of the check valve 150, the discharge path 75, and the discharge port 76 and are discharged from the spout 23 of the cap 140. When the pressurization to the outer container 131 is stopped, air is introduced into the gap between the outer container 131 and the inner container 132 from the air hole 138, and the shape before the outer container 131 is pushed is restored. The check valve 150 is closed by the capillary suction force of the contents interposed in the gap between the base 151 and the film 152. If the inner container 132 has shape restoring properties, a negative pressure is generated in the container, and the check valve 150 can be closed more reliably.

As described above, the dispensing container 6 of the sixth embodiment includes the positioning means for restricting the rotation of the check valve 150 in the circumferential direction with respect to the cap 140, and therefore the spout 23 of the cap 140 and the valve hole of the check valve 150. The positional relationship with 52 can be maintained in a preferable state. In addition, since the positioning means also serves as positioning when the check valve 150 is attached to the cap 140, the effect of facilitating manufacture is also exhibited.

Further, once the cap 140 is attached to the mouth portion 15 of the container main body 130, the cap 140 cannot be easily removed by the locking claws 135 of the mouth portion 15 of the container main body 130 and the locking claws 145 of the cap 140. It is possible to prevent contamination by a third party after filling.

As described above, the check valve, the check valve cap, and the reverse of the present invention using the dispensing

containers

1, 2, 3, 6, 6, the check valve 4 with the cover, and the pump container 5 of the first to sixth embodiments. Although the ejection pump and the fluid container including the check valve have been described, the check valve, the cap with the check valve, and the ejection pump and the fluid container including the check valve according to the present invention are not limited to the above embodiment. It can be used by being modified without changing the gist.

For the base, a plate material is mainly used. However, the present invention is not limited to this, and unevenness or the like may be provided on the upper surface and the lower surface of the base. Further, the sealing surface 61 of the base does not need to be flat, and may be provided with irregularities or the like as long as it can be adhered to the attachment portion in an airtight state.

Also, it is preferable to form the upper surface of the base in a dome shape, because it is easy to apply a uniform tension to the film and the tension also works in the direction in which the film is brought into close contact with the base, thereby improving the sealing performance of the check valve.

As described above, the check valve, the jet pump and the fluid container of the present invention can be appropriately selected according to the use and contents to be contained. Even if the pump and fluid container are changed in form without changing the gist, and other parts are added to the check valve, the jet pump and the fluid container of the present invention, the material of the part is used, What is necessary is just to select and use suitably according to the content to accommodate. For example, in order to prevent the liquid contained in the dispensing container from being oxidized, all members (including parts) in contact with the liquid or main members may be made of a material having excellent oxygen barrier properties. Needless to say, it is preferable that the material to be used is inexpensive and easily available as long as it satisfies a predetermined performance.

In the above embodiment, a dispensing container or the like provided with a check valve is shown. However, the check valve is not provided in the above embodiment, for example, in the middle of the flow path, at the end of the flow path, or in the opening of the tank. It can be attached and can be used to separate fluids in spaces where fluids stay or move, such as containers, voids, cavities, tubes, etc., and can be used to control fluid movement in one direction. At least one of the fluids separated by the check valve may be the atmosphere. When the check valve is attached to the end of the flow path or the like, it may be attached via the lower surface of the check valve.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily consider various changes and modifications within the obvious range by looking at the present specification. Therefore, such changes and modifications are interpreted as being within the scope of the invention defined by the claims.

1, 2, 3, 6 Pour container 4 Check valve with cover 5 Pump container 10

Contents

11, 12, 130 Container body 15 Port 16

Male thread

21, 31, 32 Cap 22 Top 23 Spout 24 Ceiling 25 Seal Means 26 Step portion 27 Cylindrical portion 28 Female thread 41, 41a, 41b Check valves 41c, 41d, 41e Check valves 41f, 41g, 41h Check valves 41i, 41j, 41k Check valves 41l, 150 Check valves 51, 51c , 51k Base 51l, 151 Base 52 Valve hole 59 Spacer 61, 61d Seal surface 62, 62b, 62e Covered portion 62f Covered portion 63, 63b, 63e Uncovered portion 63f, 63h Uncovered portion 64, 64b, 6 e Boundary line 64f Boundary lines 71, 71b, 71e Films 71f, 71h, 71i Films 71j, 152 Films 75, 75a, 75f Discharge path 76, 76b, 76f Discharge port 79 Stretch film 91 Spout pump 102

Suction port

110, 120 Spout path 112 Outlet 131 Outer container 132 Inner container 135 Locking claw 138 Air hole 140 Cap 142 Positioning step 143 Positioning hole 145 Locking claw 153 Positioning block 154 Positioning pin 157 Seal cylinder

Claims

A check valve having a base having a valve hole and a film bonded to the upper surface of the base so that the valve hole can be freely opened and closed, and having a seal surface attached to a mounted portion on the upper surface. ,
The film is overlapped so as to cover the valve hole except for a part of the upper surface of the base, and a boundary between a covered portion where the film is overlapped and a non-covered portion where the film is not overlapped A discharge port is formed in part of the line with the upper surface of the base, and is further bonded to the covering portion so as to form a discharge path from the valve hole to the discharge port, and the mounted portion is interposed through the seal surface. Fluid can be discharged from the valve hole to the discharge port without drilling a discharge hole in the film in a state attached to the film,
The sealing surface includes a part of the boundary line, and the covering portion on which the film of the sealing surface is overlapped is bonded so as to be a predetermined step or less at the boundary with the non-covering portion, and the predetermined step is The check valve is a step that can be liquid-tight or air-tight when the check valve is directly attached to the attached portion via the seal surface without interposing a gasket.
2. The reverse according to claim 1, wherein the sealing surface is provided at a peripheral edge portion of an upper surface of the check valve, and an end portion of the film covering the sealing surface coincides with an outer peripheral edge of the base. Stop valve.
The bonding method between the base and the film includes placing the film on the base, further placing a glass plate on the film, irradiating a laser from the glass plate, and The laser welding method is characterized in that the welded portion is cooled and contracted by stopping laser irradiation while the glass plate is placed and the glass plate is placed, thereby realizing the predetermined step or less. The check valve according to claim 1 or 2.
In the laser welding method, instead of placing a glass plate, or with the glass plate placed, the film is sucked through the valve hole of the base, and the film is brought into close contact with the base. The check valve according to claim 3, wherein the operation is performed in a state where the film is in close contact with the table.
5. The positioning device according to claim 1, further comprising positioning means for restricting rotation of the check valve in a circumferential direction relative to a mounted portion to which the check valve is attached, on the upper surface of the base. Check valve described in 1.
The gasket further comprises a spacer having a certain thickness and adhered to the upper surface of the check valve at the same position as the seal surface, and the gasket is replaced with the predetermined step instead of the predetermined step when the spacer is attached to the seal surface. The check valve according to any one of claims 1 to 5, wherein the check valve is a step capable of being liquid-tight or air-tight without interposing any of the above.
A check valve according to any one of claims 1 to 6, and a cap to which the check valve is attached,
The cap has a top tube shape, includes a spout for pouring out the fluid discharged from the discharge port at the top, and includes a connecting means for connecting to the mouth of the container main body that contains the fluid, A cap provided on the ceiling surface with sealing means for sealing the mouth of the container body over the entire circumference,
Further, the cap includes a step portion to which the check valve can be attached in a liquid-tight or air-tight state as an attached portion to which the check valve is attached, inside the sealing means on the ceiling surface. Cap with stop valve.
A jet pump that is attached to a mouth portion of a container main body that contains fluid, has a fluid suction port, a jet path, and a jet port, sucks fluid from the suction port by a piston operation, and jets the fluid from the jet port. ,
An ejection pump comprising one or more check valves according to any one of claims 1 to 6 at any one or more of the suction port, the ejection path, and the ejection port.
A fluid container comprising the check valve according to any one of claims 1 to 6, the cap with a check valve according to claim 7, or the ejection pump according to claim 8.
A container body containing fluid, a cap having a spout and attached to the mouth of the container body, and the check valve according to any one of claims 1 to 6,
The container body includes an outer container that has the mouth connected to the cap and can be self-supporting, and an inner container that is housed in the outer container and contains a fluid, and the inner container is pushed in by pushing the outer container. Is a double container capable of discharging the fluid contained in the mouth,
The outer container includes an air hole that introduces air into the gap with the inner container, and an outer container check valve that is attached to the air hole and prevents outflow of air to the outside.
The check valve for the outer container is the check valve according to any one of claims 1 to 6,
The container body and the cap comprise a connecting means that cannot be removed once the cap is attached to the mouth of the container body.
The check valve further includes sealing means for sealing the mouth of the container body over the entire circumference on the lower surface, the sealing means is in airtight contact with the mouth of the container body, and the upper surface is covered with the cap. It is attached in contact with the mounting part in a liquid-tight state,
Furthermore, the check valve is attached in such a direction that the valve hole is positioned on the opposite side of the check valve with respect to the outlet of the cap.