JP5878000B2 - Discharge container - Google Patents

Description

  The present invention relates to a container that discharges the content liquid contained therein, and more particularly, to a discharge container that can prevent the liquid once discharged from flowing back into the container and being contaminated by microorganisms.

  A so-called squeeze bottle-type container is known as a container that stores and discharges eye drops and the like, and discharges a liquid content from a nozzle by squeezing a container body. In such a discharge container, after the container body is squeezed and the content liquid is discharged, the content liquid and the outside air remaining in the nozzle are drawn into the container along with the restoration of the container body, There was a problem that microorganisms and microorganisms adhering to the nozzle were taken together, and the content liquid in the container was easily contaminated by microorganisms. For this reason, usually, preservatives are preliminarily added to eye drops etc. to prevent contamination by microorganisms, but the use of preservatives has drawbacks such as often causing eye irritation and allergic reactions. .

  In this regard, in Patent Document 1, in order to prevent microorganisms from entering the container, a membrane filter that allows liquid to pass while blocking the passage of microorganisms is provided in front of the nozzle, and the container after opening A container that keeps the inside sterile is proposed, but not only a membrane filter but also a member for mounting it is necessary, the number of parts increases, the structure becomes complicated, and the cap itself also increases in size. There is a problem.

JP-T 09-510629

  Further, if the hard nozzle is exposed, there is a possibility that the eyeball may be damaged when the tip of the nozzle touches the eyeball during use. Furthermore, there was room for improvement in terms of running out of liquid.

  Therefore, the present invention can prevent microorganisms from entering the content liquid container, has a simple and compact structure, reduces the possibility of damaging the eyeball even if it touches the eyeball during use, It aims at proposing the discharge container which improved cutting.

The present invention has been made to solve the above problems, and a discharge container according to the present invention comprises an outer layer body and an inner layer body laminated inside the outer layer body so as to be peelable from the outer layer body. A double container in which an outside air introduction hole for introducing outside air between the outer layer body and the inner layer body is formed in the section, and a plug body that is assembled to the mouth of the double container and discharges the content liquid in the inner layer body The plug body includes a valve member made of an elastic material, and a base that holds the valve member while being held in the mouth portion of the double container. Forming a discharge hole for discharging the content liquid contained in the inner layer body, and an intake hole connected to the outside air introduction hole, and the base includes a ceiling wall that opens the intake hole, and the intake hole Stands up from the top wall inward in the radial direction and closes the tip. A cylindrical body which opens the serial discharge hole is provided in an the top wall having a peripheral wall forming an annular groove between the tubular member surrounds the tubular body, said valve member, said tubular body A cover portion that forms a supply path for the content liquid discharged from the discharge hole between the cover and the cylindrical body, and closes the supply path at the tip, while the inner solution discharged from the discharge hole A cover portion having a slit that is elastically deformed by hydraulic pressure and opened to open the outlet of the feed path; and the outer layer body that closes the suction hole while the inner layer body is reduced in volume when the content liquid is discharged negative pressure possess an intake valve portion for opening the suction hole and elastically deformed, the integral, the cover portion, said peripheral wall is inserted into the annular groove between the cylindrical member and the peripheral wall of It has the base part hold | maintained by contact with the internal peripheral surface of this invention, It is characterized by the above-mentioned.

  The discharge container of the present invention includes a cap that covers the stopper body and is held by the double container, and the cap holds the closed state of the slit at the tip of the cover portion inside thereof. It is preferable to have a projecting portion.

  In the discharge container of the present invention, the cylindrical body has a reduced diameter portion whose diameter gradually decreases toward the tip, and the cover portion has at least a close contact upper portion that is in close contact with the reduced diameter portion. It is preferable to have.

  In the discharge container according to the present invention, when the user squeezes (squeezes) the body of the outer layer body, the inner layer body contracts, and the liquid pressure of the content liquid in the inner layer body increases, and the liquid pressure pushes the slit. It is opened and the content liquid in the inner layer is discharged through the discharge hole and the slit. When the discharge of the content liquid is completed and the squeeze of the outer layer body is released, the outer layer body returns to its original shape due to its restoring property, while the slit is closed, so that a negative pressure is generated between the inner layer body and the outer layer body, The intake valve portion is elastically deformed by the negative pressure to open the intake hole, and the outside air flows between the inner layer body and the outer layer body through the intake hole and the outside air introduction hole.

  Therefore, according to the discharge container of the present invention, the cover portion prevents backflow of the content liquid once discharged into the inner layer body, the inner layer body contracts as the content liquid decreases, and the outside air is separated from the outer layer body. Since it flows only between the inner layer bodies, it is possible to prevent microorganisms from being mixed into the content liquid and contact between the content liquid and the outside air. In addition, since the cover portion and the intake valve portion are integrally formed, the structure is simple and the discharge container can be made compact.

  Furthermore, according to the discharge container of the present invention, since the cylindrical body is covered with the cover portion made of an elastic material, there is a risk that the eyeball may be damaged even when the tip of the cover portion touches the eyeball during use. Furthermore, since the slit is provided at the tip of the cover part, it is possible to improve the liquid breakage due to the agility of opening and closing the slit.

It is the front view which showed the principal part of the discharge container of embodiment according to this invention in the partial cross section. It is the top view which showed the principal part of the cover part. It is a figure which shows the use condition (state which squeezed the trunk | drum of the outer layer body) of the discharge container of FIG. It is a figure which shows the use condition (state which released the squeeze of the trunk | drum of an outer layer body) of the discharge container of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the discharge container of this invention can be used as other containers such as cosmetic containers as well as various drug containers such as eye drops containers.

  As shown in FIG. 1, the discharge container 1 includes an outer layer body 3 and a thin inner layer body 5 which is laminated inside the outer layer body 3 so as to be peelable from the outer layer body 3, and a mouth portion 3 a of the outer layer body 3. A double container (delami container) 9 formed by forming an outside air introduction hole 7 for introducing outside air between the outer layer body 3 and the inner layer body 5, and a mouth portion 9 a of the double container 9. A plug body 11 for discharging the content liquid in the body 5 is provided.

  The double container 9 includes the mouth portion (the mouth portion of the outer layer body 3 is denoted by reference numeral 3a and the mouth portion of the inner layer body 5 is denoted by reference numeral 5a) 9a and a shoulder portion (outer layer body) connected to the lower end of the mouth portion 9a. 3b is indicated by reference numeral 3b, and the shoulder of the inner layer body 5 is indicated by reference numeral 5b.) 9b, and a cylindrical body connected to the shoulder 9b (the body part of the outer layer body 3 is indicated by reference numeral 3c). The body 5 has a body portion denoted by reference numeral 5c.) 9c and a bottom portion (not shown) for closing the lower end of the body portion 9c. The body portion 3c of the outer layer body 3 has a squeeze-deformable thickness, and the inner layer body 5 is compressed by squeezing the outer layer body 3 (air is interposed between the outer layer body 3 and the inner layer body 5). If present, the inner layer body 5 is compressed by pressurizing the air.) Thus, the content liquid in the inner layer body 5 is discharged through the plug body 11. The inner layer body 5 can be contracted (that is, reduced in volume) as the content liquid decreases. Such a double container 9 is formed by, for example, coextruding an outer layer body 3 made of a high-density polyethylene resin and an inner layer body 5 made of a nylon resin that is incompatible with the high-density polyethylene resin into a laminated shape and blowing it. A laminated preform formed by molding, or by adhering and laminating an outer layer preform and an inner layer preform made of the same synthetic resin with a release layer interposed therebetween can be produced by biaxial stretch blow molding or the like.

  The stopper 11 has a base 13 held by the mouth portion 9 a of the double container 9 and a valve member 15 held by the base 13. The base 13 includes a top wall 17 whose lower surface is in contact with the protruding end of the mouth portion 9a, a mounting tube 19 that is suspended from the outer edge of the top wall 17 and is fitted and held on the outer wall of the mouth portion 3a of the outer layer body 3, and the mounting tube 19, an inner ring 21 that hangs down from the top wall 17 and is fitted into the mouth 5 a of the inner layer body 5. The lower end portion of the mounting cylinder 19 is hermetically contacted and sealed with the enlarged diameter portion 23 at the lower end of the mouth portion 3a of the outer layer body 3. In this example, the mounting cylinder 19 is held in the mouth 3a of the outer layer body 3 by screw fitting, but may be held in the mouth 3a by an engaging means such as an undercut instead of the screw. (Not shown).

  Further, the top wall 17 of the base 13 is provided with a cylindrical body 25 standing from the top wall 17 at the center and closed at the tip, and an inner annular groove between the cylindrical body 25 and the cylindrical body 25. An inner peripheral wall 27 forming m1 and an outer peripheral wall 29 surrounding the inner peripheral wall 27 and forming an outer annular groove m2 between the inner peripheral wall 27 and the inner peripheral wall 27 are provided. On the side wall of the cylindrical body 25, a discharge hole 31 is formed which communicates the inside of the inner layer body 5 with a feeding path P described later and discharges the content liquid in the inner layer body 5. In this example, the discharge holes 31 are provided at two opposite positions on the circumference, but the number of the discharge holes 31 may be one or three or more. The cylindrical body 25 has a reduced diameter portion 25a whose diameter gradually decreases toward the distal end at the distal end portion. Here, the reduced diameter portion 25a is hemispherical.

  Further, an intake hole 33 connected to the outside air introduction hole 7 is formed between the inner peripheral wall 27 and the outer peripheral wall 29 of the top wall 17 of the base 13 (the groove bottom of the outer annular groove m2). A recess S is formed in the radially outer portion of the protruding end surface of the mouth portion 9a so as not to block the intake hole 33. As a result, when the inner layer body 5 contracts as the content liquid in the inner layer body 5 decreases, it is formed along the screw between the suction hole 33 and the outer wall of the mouth 3a of the outer layer body 3 and the mounting cylinder 19. Outside air flows between the inner layer body 5 and the outer layer body 3 through the spiral passage and the outside air introduction hole 7.

  The valve member 15 is made of an elastic material such as silicon rubber, and covers the cylinder 25 and forms a feed path P for the content liquid discharged from the discharge hole 31 with the cylinder 25. A cover having a slit Q that closes the feeding path P at the tip and is elastically deformed by the hydraulic pressure of the internal solution discharged from the discharge hole 31 to be pushed open to open the outlet of the feeding path P The portion 35 and the intake hole 33 are closed, and elastically deformed by the negative pressure in the outer layer body 3 (between the outer layer body 3 and the inner layer body 5) due to the volume reduction of the inner layer body 5 when the content liquid is discharged. An intake valve portion 37 that opens the intake hole 33 is integrally provided. Note that the “feeding path” referred to here is a path (gap) formed in advance between the cylinder 25 and the cover part 35 in a state in which the content liquid is not discharged (a state in which no fluid pressure is applied). ) As well as a path (gap) that appears between the cylindrical body 25 and the cover portion 35 only when the content liquid is discharged (a state in which hydraulic pressure is applied). In addition, it means a moving path of the content liquid from the discharge hole 31 to the slit Q between the cylinder 25 and the cover part 35.

  More specifically, the cover portion 35 has a cylindrical shape that covers the entire cylindrical body 25 including the discharge hole 31 and has a closed end, and the base portion of the cylindrical body 25 where the discharge hole 31 is located is located between the cylindrical body 25 and the base portion. A base portion 35a inserted and held in the inner annular groove m1 between the cylindrical body 25 and the inner peripheral wall 27, and connected to the upper end of the base portion 35a and the cylindrical body 25. An intermediate portion 35b that surrounds the cylindrical body 25 while forming a gap therebetween, and an entire distal end portion that is connected to the upper end of the intermediate portion 35b and includes the reduced diameter portion 25a of the cylindrical body 25 is in close contact with the cylindrical body 25 And a close contact upper portion 35c wrapped around. The close contact upper portion 35c is at least the outer surface of the hemispherical reduced diameter portion 25a (here, the reduced diameter portion 25a and a portion of the constant diameter portion 25b extending downward from the reduced diameter portion 25a, the outer surface of a portion above the discharge hole 31) When the content liquid is discharged from the discharge hole 31 with a predetermined pressure, the contact upper portion 35c is separated from the outer surface of the cylindrical body 25 by the liquid pressure, and the content liquid flows between them. Therefore, when the inner layer body 5 is compressed by squeezing the outer layer body 3 and the liquid pressure of the content liquid is increased, the cover portion 35 has the content liquid in the order of the base portion 35a, the intermediate portion 35b, and the contact upper portion 35c of the cover portion 35. While being fed and the slit Q is pushed open by the liquid pressure and discharge of the content liquid is allowed, the squeeze of the outer layer body 3 is released and the compression of the inner layer body 5 is released to restore the original shape, The close contact portion 35c again comes into close contact with the outer surface of the cylindrical body 25, and the slit Q is quickly closed to prevent backflow of the discharged content liquid and intrusion of outside air. As described above, the slit Q functions as a check valve.

  As shown in the partial plan view of the cover portion 35 in FIG. 2, in this embodiment, the slit Q is constituted by one straight cut, but the shape of the slit Q is limited to one cut. Instead of two, the two cuts may be cross-shaped to cross each other, or Y-shaped with one end of the three cuts butting each other, or a plurality of straight cuts are provided in a state of being separated from each other. It can also be configured. The shape and the cutting length of the slit Q can be appropriately set according to the viscosity of the contents, the usage amount desired every time, and the material and shape of the cover part 35.

  The intake valve portion 37 has a conical taper shape extending while being inclined downward from the outer edge of the transition portion 39 projecting horizontally outward in the radial direction from the outer wall between the base portion 35a and the intermediate portion 35b of the cover portion 35. The outer peripheral edge of the lower end thereof is elastically in contact with the inner surface of the outer peripheral wall 29 of the base 13 in an airtight manner. The intake valve section 37 prevents the compressed air in the inner layer body 5 and the outer layer body 3 from leaking outside through the intake holes 33 when the outer layer body 3 is squeezed to discharge the content liquid. On the other hand, when a negative pressure is generated between the outer layer body 3 and the inner layer body 5 due to the release of the squeeze of the outer layer body 3, the suction hole 33 is opened by elastic deformation based on the connection position with the transition portion 39 by the negative pressure. Allow the introduction of outside air. Thus, the intake valve portion 37 functions as a check valve.

  Further, in this embodiment, the discharge container 1 includes a cap 41 that covers and conceals the stopper 11 and is fitted and held in the double container 9 (here, the shoulder 3b of the outer layer body 3). 41 is a cylindrical body wall 43 with a lid that covers the plug body 11 and hangs down corresponding to the cylinder body 25 at the inner center of the body wall 43, and is attached to the distal end of the cover portion 35 with the cap 41 attached. A protrusion 47 that holds a slit Q in a closed state is provided. The protrusion 47 can also press the tip of the cover part 35 to hold the slit Q in a closed state. When the liquid pressure is applied between the cover part 35 and the cylinder 25, the liquid pressure is increased. Thus, the projection 47 is brought close to the tip so that the tip of the cover portion 35 is not deformed (a gap exists between the projection 47 and the tip when the liquid pressure is not applied in normal use). ), The slit Q can be kept closed.

  In the discharge container 1 having such a configuration, when the cap 41 is removed and the user squeezes the body 3c of the outer layer body 3, the inner layer body 5 contracts as shown in FIG. (When air is present between the outer layer body 3 and the inner layer body 5, the intake hole 33 is closed by the intake valve portion 37, so the air between the outer layer body 3 and the inner layer body 5 is pressurized. The inner layer body 5 contracts.), The liquid pressure of the content liquid in the inner layer body 5 increases, and this liquid pressure circulates the content liquid between the cylinder 25 and the cover part 35 and opens the slit Q. The content liquid in the inner layer body 5 is discharged to the outside through the discharge hole 31, the feed path P and the slit Q. When the discharge of the content liquid is completed and the squeeze of the outer layer body 3 is released as shown in FIG. 4, the outer layer body 3 returns to its original shape due to its restoring property, while the slit Q is closed, so the inner layer body 5 and the outer layer The negative pressure between the body 3 and the intake valve portion 37 is elastically deformed by the negative pressure to open the intake hole 33, and the outside air is formed in the intake hole 33, the outer wall of the mouth 3 a of the outer layer body 3, and the mounting cylinder 19. It flows between the inner layer body 5 and the outer layer body 3 through the spiral passage formed between them and the outside air introduction hole 7.

  Therefore, according to the discharge container 1, the slit Q provided at the tip of the cover portion 35 prevents the backflow of the content liquid once discharged into the inner layer body 5, and the inner layer as the content liquid decreases. Since the body 5 contracts and the outside air flows only between the outer layer body 3 and the inner layer body 5, it is possible to prevent the mixture of microorganisms into the contents liquid and the contact between the contents liquid and the outside air. Further, since the cover part 35 and the intake valve part 37 are integrally formed, the structure can be simplified and the discharge container 1 can be made compact.

  Furthermore, according to the discharge container 1, since the cylindrical body 25 is covered with the cover portion 35 made of an elastic material, the eyeball is damaged even when the tip of the cover portion 35 touches the eyeball during use. In addition, since the slit Q is provided at the front end of the cover portion 35, liquid breakage can be improved by agility of opening and closing of the slit Q.

  Moreover, according to the discharge container 1 of this embodiment, since the cylindrical body 25 is erected on the top wall 17 of the base 13 and the discharge hole 31 is opened on the side wall of the cylindrical body 25, the discharge container is used. 1 can be further downsized.

  Furthermore, according to the discharge container 1 of this embodiment, the entire cylindrical body 25 is covered by the cover portion 35 and the cylindrical body 25 is not exposed to the outside, so that the adhesion and breeding area of microorganisms can be reduced.

  Furthermore, according to the discharge container 1 of this embodiment, the protrusion that holds the closed state of the slit Q by pressing the tip of the cover 35 against the cap 41 or in proximity to the tip of the cover 35. Since 47 is provided, it is possible to prevent leakage of the content liquid from the slit Q during distribution or the like.

  Further, when there is always a gap between the upper part of the cover part 35 and the reduced diameter part 25a of the cylindrical body 25, when the discharge container 1 is tilted without the body part 3c of the outer layer body 3 being squeezed. However, according to the discharge container 1 of this embodiment, the close contact upper portion 35c is in close contact with the outer surface of the cylindrical body 25. Therefore, it is possible to prevent a situation in which the content liquid leaks out just by turning the discharge container 1 upside down before use.

  Thus, according to the present invention, microorganisms can be prevented from entering the liquid container, the structure is simple and compact, and even if the eyeball is touched during use, the possibility of damaging the eyeball is reduced. It became possible to propose an improved discharge container.

DESCRIPTION OF SYMBOLS 1 Discharge container 3 Outer layer body 5 Inner layer body 7 Outside air introduction hole 9 Double container 11 Plug body 13 Base 15 Valve member 17 Top wall 25 Cylindrical body 25a Reduced diameter part 25b Constant diameter part 27 Inner peripheral wall 29 Outer wall 31 Discharge hole 33 Intake Hole 35 Cover part 35a Base part 35b Intermediate part 35c Close contact upper part 37 Intake valve part 41 Cap 43 Body wall 47 Projection part

Claims (3)

An outer layer body and an inner layer body laminated inside the outer layer body so as to be peelable from the outer layer body are formed, and an outside air introduction hole for introducing outside air between the outer layer body and the inner layer body is formed at the mouth of the outer layer body. A discharge container equipped with a double container and a stopper that is assembled to the mouth of the double container and discharges the content liquid in the inner layer,
The stopper has a valve member made of an elastic material, and a base that holds the valve member while being held at the mouth of the double container,
In the plug body, a discharge hole for discharging the content liquid contained in the inner layer body and an intake hole connected to the outside air introduction hole are formed,
The base includes a top wall that opens the air inlet, a cylindrical body whose tip is closed, to open the discharge hole in its side walls with rising from the top panel wall at radially inner suction pores, the A peripheral wall that is provided on the top wall and surrounds the cylindrical body and forms an annular groove with the cylindrical body ,
The valve member is a cover portion that covers the cylindrical body and forms a supply path for the content liquid discharged from the discharge hole between the cylindrical body and closes the supply path at the tip, A cover portion having a slit that is elastically deformed and pushed open by the liquid pressure of the inner solution discharged from the discharge hole and opens the outlet of the feed path, and closes the intake hole, while the liquid content is discharged an intake valve portion for opening the suction hole and elastically deformed by the negative pressure of the outer body associated with the volume reduction of the inner body, the possess together,
The discharge container according to claim 1, wherein the cover portion includes a base portion that is inserted into the annular groove between the cylindrical body and the peripheral wall and is held by contact with the inner peripheral surface of the peripheral wall . The discharge container includes a cap that covers the stopper and is held by a double container,
2. The discharge container according to claim 1, wherein the cap has a protruding portion that holds a closed state of the slit at a tip portion of the cover portion on an inner side thereof. The cylindrical body has a reduced diameter portion whose diameter gradually decreases toward the tip,
The discharge container according to claim 1, wherein the cover portion has a close contact upper portion that is in close contact with at least the reduced diameter portion.

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