JP2016068998A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of suppressing a large amount of pouring of a content fluid, and pouring a proper amount of the content fluid over a wide range.SOLUTION: A double container 1 of the invention comprises: an inside plug 5 having an inner layer body 2, an outer layer body 3, and a top wall 21, the top wall 21 having a content fluid passage 23 communicated to a filling space S formed thereon; a check valve 6 for opening the content fluid passage 23 by compression to the filling space S following to pressing to the outer layer body 3, while closing the content fluid passage 23; and a pouring cap 4 having a pouring cylinder 14 for pouring the content fluid, storing the inside plug 5 and the check valve 6 therein and being attached to a mouth part peripheral wall 3a. A nozzle tip 7 for forming a spin passage for applying revolution to the content fluid flowing via the content fluid passage 23 between the pouring cap 4 and the nozzle tip, is attached to the pouring cap 4, and a jetting hole 14a for jetting the content fluid which has passed the content fluid passage 23 and the spin passage, is provided on the nozzle tip 7 or pouring cap 4, and the jetting hole is disposed inside of the pouring cylinder 14.SELECTED DRAWING: Figure 1

Description

  The present invention comprises a volume-deformable inner layer body having a filling space for a content liquid, an outer layer body that accommodates the inner layer body therein, and a dispensing cap that is attached to the mouth of the outer layer body. The present invention relates to a double container that pours a content liquid from a spout provided in a discharge cap.

  Conventionally, as a container that contains various food seasonings, liquids such as cosmetics and drugs, a pouring cap having a spout is attached to the mouth of the container body, and the container is tilted or the container body is A container that dispenses the content liquid by pressing is used.

  Further, in such a container, the container body is composed of an inner layer body that has a filling space for the content liquid and is capable of volumetric deformation, and an outer layer body that houses the inner layer body and forms the outer shell of the container. A double container (also called a delamination container or a delamination container) is known (for example, Patent Document 1).

  In such a double container, a pouring cap provided with a check valve for preventing the entry of outside air into the inner layer body is attached to the mouth of the outer layer body. And an inner layer body is pressurized by pressing an outer layer body, and a non-return valve is open | released by this, A content liquid is poured out. In addition, the outer layer body is provided with a through-hole that takes in outside air between the inner layer body, and when the outer layer body is restored to its original shape after pouring, the outside air is taken in from the through-hole, Only the outer layer body is restored while the volume is reduced and deformed.

JP 2013-133116 A

  By the way, in such a double container, the discharge mode of the content liquid was only poured out in a stream form (water column shape) from the spout, so when trying to sprinkle the content liquid over a wide range, There was a possibility that the content liquid was poured out in a larger amount than the amount that was made.

  Therefore, an object of the present invention is to provide a double container capable of suppressing a large amount of the content liquid from being poured out and allowing an appropriate amount of the content liquid to be poured out over a wide range.

The present invention has been made to solve the above problems, and the double container of the present invention includes a volume-deformable inner layer body having a filling space for the content liquid,
An outer layer body in which the inner layer body is housed inside and an outside air introduction opening for introducing air between the inner layer body and the inner layer body is formed;
An inner plug having a top wall covering the upper opening of the inner layer body, and having a content liquid passage leading to the filling space formed on the top wall;
A check valve that closes the content liquid passage and opens the content liquid passage by pressurization of the filling space accompanying the pressing to the outer layer body;
A double container having a pouring cylinder for pouring the content liquid, and a pouring cap that is fitted on the peripheral wall of the mouth of the outer layer body with the inner plug and the check valve inside. ,
The dispensing cap is mounted with a nozzle tip that forms a spin passage that turns the content liquid flowing through the content liquid passage between the dispensing cap and the dispensing cap,
A jet nozzle provided in the nozzle tip or the dispensing cap and capable of ejecting the content liquid that has passed through the content liquid passage and the spin passage is disposed inside the dispensing cylinder. .

  In the double container of the present invention, the spin passage is directed toward the jet port formed on one of the contact surfaces of the nozzle tip and the extraction cap that contact each other. It is preferably composed of a plurality of converging spin grooves.

  In the double container of the present invention, the nozzle tip or the dispensing cap may be provided with a through-hole that communicates the content liquid passage and the ejection port separately from the spin passage. preferable.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the double container which can suppress that a content liquid is poured out in large quantities and can pour out a suitable quantity of a content liquid over a wide range.

It is sectional drawing which shows the double container which concerns on one Embodiment of this invention. (A) is a figure which shows an example of the pouring form of the double container shown in FIG. 1, (b) is a figure which shows the other pouring form in the use condition of the double container shown in FIG. . It is sectional drawing which shows the double container which concerns on other embodiment of this invention.

  Hereinafter, the present invention will be described in more detail with reference to the drawings. As shown in FIG. 1, a double container 1 (hereinafter also referred to as “container 1”) according to an embodiment of the present invention includes an inner layer body 2, an outer layer body 3, a dispensing cap 4, and an inner plug 5 And a check valve 6 and a nozzle tip 7.

  The inner layer body 2 is formed so as to be capable of volumetric deformation, and is housed inside the outer layer body 3. The inner layer body 2 has a filling space S in which the content liquid is filled, and an upper opening connected to the filling space S.

  The outer layer body 3 is configured by a cylindrical mouth peripheral wall 3a having a reversible flexible trunk (not shown) and a bottom for closing the lower end of the trunk. A male screw portion 3b is provided on the outer peripheral surface of the mouth portion peripheral wall 3a. The mouth peripheral wall 3a is provided with an outside air introduction opening 3c for taking air between the inner layer body 2 and the outer peripheral surface provided with the outside air introduction opening 3c. A groove portion 3d is formed by cutting out 3b. In addition, the formation position of the outside air introduction opening 3c is not particularly limited, and the outside air introduction opening 3c can be provided at the mouth, the trunk, the bottom, or the like.

  Here, the inner layer body 2 and the outer layer body 3 are both made of a synthetic resin in the present embodiment, and use a resin having low compatibility with each other. The inner layer body 2 and the outer layer body 3 are formed by performing blow molding on a parison formed by laminating the synthetic resin material of the inner layer body 2 and the synthetic resin material of the outer layer body 3. One or a plurality of adhesive bands may be provided between the inner layer body 2 and the outer layer body 3 so as to extend in the longitudinal direction and partially join the inner layer body 2 and the outer layer body 3.

  The dispensing cap 4 includes an outer peripheral wall 11 that surrounds the mouth peripheral wall 3a. On the inner peripheral surface of the outer peripheral wall 11, a female screw portion 12 corresponding to the male screw portion 3b of the mouth peripheral wall 3a is formed. A top wall 13 is integrally connected to the upper portion of the outer peripheral wall 11. The top wall 13 is provided with a pouring cylinder 14 for pouring the content liquid, and a spout 14 a is formed inside the pouring cylinder 14. In addition, a pair of upper fitting walls 15 having a concentric double arrangement is provided on the lower surface of the top wall 13. Further, an outside air introduction hole 16 penetrating the top wall 13 is provided on the outer side in the radial direction from the upper fitting wall 15. The lower end of the outer peripheral wall 11 is in airtight contact with the mouth peripheral wall 3a, and an air passage T leading to the outside air introduction opening 3c is provided between the mouth peripheral wall 3a and the outer peripheral wall 11.

  The inner plug 5 is disposed on the inner side of the pouring cap 4 and has a top wall 21 that covers the upper opening of the inner layer body 2 located on the inner side of the mouth peripheral wall 3a. The top wall 21 is provided with a cylindrical wall 22 having one end opened to the dispensing cylinder 14 side and the other end opened to the filling space S side of the inner layer body 2. The cylindrical wall 22 of the present embodiment has an opening 22c at the lower end via an inclined portion 22b continuous with a cylindrical portion 22a extending from the top wall 21 toward the filling space S. Further, a content liquid passage 23 is formed in the top wall 21 so as to penetrate the top wall 21 and communicate with the filling space S.

  The top wall 21 is provided with a step portion 24 that is bent toward the filling space S on the radially outer side from the content liquid passage 23, and is open upward with the step portion 24 on the radially outer side from the step portion 24. A fitting wall 25 that forms a groove is provided. An annular seal wall 26 that sandwiches the inner layer body 2 with the outer layer body 3 is provided on the lower surface of the top wall 21. At least one groove 27 is provided on the outer edge of the top wall 21.

  In the cylindrical wall 22, a moving valve body 30 that is spherical in this embodiment is provided. A gap is provided between the cylindrical wall 22 and the moving valve body 30 so that the moving valve body 30 can move according to the change in the posture of the container 1 and the liquid content hardly passes (substantially does not pass). It has been. Further, the movable valve body 30 is seated on the inclined portion 22b of the cylindrical wall 22 by placing the container 1 in an upright posture (a posture in which the bottom portion of the container 1 is placed on a horizontal base). As a result, the filling space S can be sealed.

  The check valve 6 includes a plate-like valve body 43 that is connected via, for example, three arms 42 on the radially inner side of the cylindrical annular wall 41. When the check valve 6 is attached to the dispensing cap 4 and the inner plug 5, the lower portion of the annular wall 41 is fitted and held between the step portion 24 and the fitting wall 25, and the upper portion of the annular wall 41 is Are fitted and held by the pair of upper fitting walls 15. Further, the valve body 43 normally sits on the top wall 21 and closes the content liquid passage 23. In the present embodiment, an annular air valve 45 extending along the circumferential direction is provided outside the annular wall 41 in the radial direction. The air valve 45 is elastically deformable, and is configured to switch between communication and blocking between the outside air introduction hole 16 and the outside air introduction opening 3c.

  The nozzle tip 7 is attached to the inside of the dispensing cap 4, and has a cylindrical peripheral wall 71 that is fitted and held on the inner peripheral surface of the upper fitting wall 15 by uneven fitting, and a partition wall 72 that covers the upper end of the peripheral wall 71. Is provided. In the present embodiment, a longitudinal groove 71 a extending in parallel with the central axis M (axial direction) is formed on the outer peripheral surface of the peripheral wall 71. Further, a spin groove 72a communicating with the vertical groove 71a is formed on the upper surface of the partition wall 72, which is a contact surface with the top wall 13. A passage surrounded by the spin groove 72a and the lower surface of the top wall 13 becomes a spin passage, and turns the content liquid flowing through the content liquid passage 23 and the vertical groove 71a. The longitudinal groove 71a is not particularly limited in shape and number as long as it allows the content liquid passage 23 and the spin groove 72a to communicate with each other. For example, three longitudinally extending grooves are formed in the axial direction. Also good. Further, the shape of the spin groove 72a is not particularly limited as long as the content liquid passing through the spin groove 72a is swirled. For example, the spin groove 72a converges toward the jet port 14a located at the center of the partition wall 72. Three helical grooves can be formed. In the present embodiment, the vertical groove 71 a is formed on the outer peripheral surface of the peripheral wall 71, but it may be provided on the inner peripheral surface of the upper fitting wall 15 that contacts the outer peripheral surface of the peripheral wall 71. Further, the spin groove 72 a may be provided on the lower surface of the top wall 13.

  In the center of the partition wall 72, a through-hole 72b is formed separately from the spin passage to connect the content liquid passage 23 and the jet port 14a. That is, in the double container 1 of the present embodiment, the content liquid that has flowed from the filling space S through the content liquid passage 23 passes through the vertical groove 71a and the spin groove 72a toward the jet outlet 14a. Separately, it has a second path passing through the through hole 72b. In addition, it is good also as a structure which the content liquid goes to the jet nozzle 14a only through the said 1st path | route, without providing the through-hole 72b.

  The lid 50 is connected to the outer peripheral wall 11 of the pouring cap 4 via a hinge 51, and can be covered with the pouring cylinder 14 and the outside air introduction hole 16 by being bent by the hinge 51. More specifically, the lid 50 includes a flat plate-like upper wall 52 and a lid peripheral wall 53 that is connected to the edge of the upper wall 52 and is continuous with the outer peripheral wall 11. Is provided with a cylindrical seal portion 54 that enters the inside of the extraction cylinder 14 and seals the extraction cylinder 14 when the lid 50 is closed. The lid 50 may be a separate body from the pouring cap 4 without providing the hinge 51, and may be configured to be attached to the pouring cap 4 with screws or undercuts.

  When the content liquid is poured out from the double container 1 configured as described above, the lid 50 is opened as shown in FIGS. 2 (a) and 2 (b), and the container 1 is moved from the standing position to the tilted position. It changes and the trunk | drum of the outer layer body 3 is pressed. Thereby, the moving valve body 30 in the cylindrical wall 22 moves to the extraction cylinder 14 side, and the filling space S is pressurized via the air between the inner layer body 2 and the outer layer body 3. Since the space between the outside air introduction opening 3c of the outer layer body 3 and the outside air introduction hole 16 of the dispensing cap 4 is sealed by the air valve 45, the inner layer body 2 and the outer layer are pressed when the outer layer body 3 is pressed. Air between the body 3 does not leak out. The pressurized content liquid lifts the valve body 43 to open the content liquid passage 23 and flows out of the content liquid passage 23. Then, the content liquid is divided into a first path passing through the vertical groove 71a and the spin groove 72a and a second path passing through the through hole 72b, and passes through the spout 14a disposed inside the dispensing cylinder 14 to the outside. Is injected (injected).

  Here, in the double container 1 of the present embodiment, by pressing the body part of the outer layer body 3 vigorously (quickly), as shown in FIG. The liquid content can be poured into a shower. This is because, by providing the spin passage, the content liquid is swirled before the jet outlet 14a, and the content liquid is scattered from a wide range by being pushed out from the jet outlet 14a.

  Further, when the body portion is slowly pressed, the content liquid can be poured out as shown in FIG. This is because the content liquid passes through the spout 14 a at a low speed, so that the content liquid merges inside the extraction cylinder 14 to form a droplet and then drops from the tip of the extraction cylinder 14. It is.

  As described above, according to the double container 1 of the present embodiment, by providing the spin passage, the content liquid can be dispensed in a mist form from the jet nozzle 14a, so that a large amount of the content liquid is dispensed. And an appropriate amount of the content liquid can be poured out over a wide range.

  Moreover, according to the double container 1 of this embodiment, it is possible to select one from two mist-like and drop-like dispensing forms by changing the speed at which the body portion of the outer layer body 3 is pressed. it can.

  Furthermore, in the double container 1 of the present embodiment, since the nozzle chip 7 is provided with the through hole 72b, the content liquid flows smoothly by being divided into two paths, the first path and the second path. Compared with the case where the content liquid passes only through the first path, the content liquid can be poured out without applying a large pressure when the body portion of the outer layer body 3 is pressed.

  In addition, after pouring a required amount of content liquid, the press to the trunk | drum of the outer layer body 3 is cancelled | released. As a result, the pressure in the filling space S decreases, and the valve body 43 closes the content liquid passage 23, so that the entry of outside air into the filling space S can be prevented. Further, since the outer layer body 3 tends to return to its original shape by its own restoring force, the inner layer body 2 and the outer layer body 3 are in a negative pressure state, whereby the air valve 45 is elastically deformed downward. Thus, air is introduced from the outside air introduction hole 16 through the groove 27 and the air passage T into the outside air introduction opening 3c, and the outer layer body 3 is restored while the inner layer body 2 is deformed and deformed.

  When the valve body 43 closes the content liquid passage 23, the content liquid remains in the space from the dispensing cylinder 14 to the content liquid passage 23, but when the container 1 is returned to the original standing posture, The moving valve body 30 moves to the filling space S side of the inner layer body 2 due to its own weight or a pressure drop in the filling space S. As a result, the content liquid remaining in the dispensing cylinder 14 is sucked back to the 14a side, and dripping can be effectively prevented.

  Next, another embodiment according to the present invention will be described with reference to FIG. In addition, the site | part which has the same function as embodiment mentioned above attaches | subjects the same code | symbol, and abbreviate | omits description.

  In the double container 100 shown in FIG. 3, a protruding portion 80 is provided on the inner side of the pouring tube 14 through a plurality of connecting pieces provided at the lower end portion on the inner surface of the pouring tube 14. The protruding portion 80 includes a cylindrical protruding portion side wall 81 and a protruding portion top wall 82 that covers the upper end of the protruding portion side wall 81, and a through hole 83 is formed at the center of the protruding portion top wall 82.

  In addition, a nozzle tip 107 mounted from above (on the side of the dispensing opening of the dispensing cylinder 14) is disposed on the protruding portion 80. The nozzle chip 107 includes a cylindrical peripheral wall 171 fitted and held by concave and convex fitting and a partition wall 172 that covers the upper end of the peripheral wall 171 on the outer side of the protruding portion side wall 81 and the inner side of the extraction tube 14. In the present embodiment, a spout 14 a is formed at the center of the partition wall 172.

  In the present embodiment, a longitudinal groove 81 a extending in the axial direction is formed on the outer peripheral surface of the protruding portion side wall 81. A spin groove 172a communicating with the vertical groove 81a is formed on the lower surface of the partition wall 172 serving as a contact surface with the protrusion top wall 82. In other words, in the present embodiment, the passage surrounded by the spin grooves 172a and the upper surfaces of the projecting portion top walls 82 becomes the spin passage, and swirls the content liquid flowing through the content liquid passage 23 and the vertical groove 81a. The vertical grooves 81a and the spin grooves 172a may be formed on any contact surface on the protruding portion 80 side or the nozzle chip 107 side, and the shape and number thereof are not limited.

  Also in the double container 100 having the above-described configuration, the content liquid can be poured out from the jet port 14a in a mist form by providing the spin passage, as in the previous embodiment. It is possible to suppress a large amount from being dispensed and to dispense an appropriate amount of the content liquid over a wide range. Moreover, by changing the speed at which the body part of the outer layer body 3 is pressed, either one of two mist-like and drop-like dispensing forms can be selected. Further, since the through hole 83 is provided in the protrusion top wall 82, the content liquid flows smoothly through the two paths of the first path passing through the spin path and the second path passing through the through hole 83. When pressing the body part of the body 3, the content liquid can be poured out without applying a large pressure.

  The double container according to the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope according to the claims. For example, the check valve 6 is not limited to a three-point valve, and other one-way check valves such as a one-point valve can be used. Further, the cross-sectional shape of the moving valve body 30 can be changed as appropriate, such as a circle or a polygon, according to the cross-sectional shape of the cylindrical wall 22. In addition, the three-dimensional shape may be various shapes such as a columnar shape (such as a cylinder or a quadrangular column) or a cone shape (such as a cone or a triangular pyramid) regardless of a spherical shape. Further, the outer layer body 3 and the inner layer body 2 are not limited to those formed by blow molding a parison having a laminated structure, and the outer layer body 3 and the inner layer body 2 are individually formed, and then the inner layer body 2 is formed into the outer layer body. 3 may be installed.

DESCRIPTION OF SYMBOLS 1,100 Double container 2 Inner layer body 3 Outer layer body 3a Opening part peripheral wall 3b Male screw part 3c Outside air introduction opening 3d Groove part 4 Pouring cap 5 Inner plug 6 Check valve 7 Nozzle tip 11 Outer wall 12 Female thread part 13 Top wall 14 Note Outlet tube 14a Outlet 15 Upper fitting wall 16 Outside air introduction hole 21 Top wall 22 Cylindrical wall 22a Cylindrical portion 22b Inclined portion 22c Opening 23 Contents liquid passage 24 Step portion 25 Fitting wall 26 Seal wall 27 Groove 30 Moving valve body 41 Annular wall 42 Arm 43 Valve body 45 Air valve 50 Lid body 51 Hinge 52 Upper wall 53 Lid body peripheral wall 54 Seal part 71 Peripheral wall 71a Vertical groove 72 Bulkhead 72a Spin groove 72b Through hole 80 Projection part 81 Projection part side wall 81a Vertical groove 82 Projection Top wall 83 Through-hole 107 Nozzle tip 171 Peripheral wall 172 Partition 172a Spin groove S Filling space

Claims (3)

A volume-reducing and deformable inner layer body having a filling space for the content liquid;
An outer layer body in which the inner layer body is housed inside and an outside air introduction opening for introducing air between the inner layer body and the inner layer body is formed;
An inner plug having a top wall covering the upper opening of the inner layer body, and having a content liquid passage leading to the filling space formed on the top wall;
A check valve that closes the content liquid passage and opens the content liquid passage by pressurization of the filling space accompanying the pressing to the outer layer body;
A double container having a pouring cylinder for pouring the content liquid, and a pouring cap that is fitted on the peripheral wall of the mouth of the outer layer body with the inner plug and the check valve inside. ,
The dispensing cap is mounted with a nozzle tip that forms a spin passage that turns the content liquid flowing through the content liquid passage between the dispensing cap and the dispensing cap,
A jet nozzle provided in the nozzle tip or the dispensing cap and capable of ejecting the content liquid that has passed through the content liquid passage and the spin passage is disposed inside the dispensing cylinder. Double container.   The spin path is configured by a plurality of spin grooves that are formed on either side of the nozzle tip that abuts against each other and the abutment surface of the dispensing cap and converge toward the ejection port. 2. The double container according to 1.   The double container according to claim 1 or 2, wherein a through hole is formed in the nozzle tip or the dispensing cap so as to communicate the content liquid passage and the ejection port separately from the spin passage.

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