JP3672163B2 - Squeeze container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a squeeze container.
[0002]
[Prior art]
Conventionally, as described in JP-A-9-175566, as a delamination container, a container body is composed of an outer layer and an inner layer that is releasably laminated on the outer layer, and an air introduction hole is formed in the outer layer. There is something to prepare for.
[0003]
However, in this container, if the inner layers at the upper part of the container are in close contact with each other in the process of use, the passage through which the contents pass is blocked, making it difficult to discharge the contents.
[0004]
Japanese Patent Laid-Open No. 6-100057 discloses a delamination container in which an inner container and an outer container are joined with an adhesive from the middle point of the side surface portion to the shoulder portion in the entire region in the circumferential direction of the container. . However, the inner container and the outer container are not bonded from the side surface midpoint to the bottom. Accordingly, when the inner layers near the middle of the container are in close contact with each other in the course of use, the passage through which the contents pass is blocked, making it difficult to discharge.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to allow a squeeze container to reliably discharge all contents to the end while making it possible to smoothly restore the appearance of the squeezed container.
[0006]
[Means for Solving the Problems]
The present invention according to claim 1 is a squeeze container in which a container body is constituted by an outer layer and an inner layer each having an air introduction hole, and air is introduced between the outer layer and the inner layer. An adhesive band that does not separate from the inner layer extends in the container height direction in part of the container circumferential direction, and the inner layer separated from the outer layer can form a passage for the contents between the adhesive layer and the adhesive layer. A certain curvature is secured at the base portion of the inner layer separated from the outer layer by the side of the adhesive band, and the passage is surrounded by the base portion, and the inside of the outer layer provided with the air introduction hole. By forming a concave shape in advance at least one of the peripheral surface and the outer peripheral surface of the inner layer facing the air introduction hole, the air introduction hole is formed on the inner peripheral surface of the outer layer and / or the outer peripheral surface of the inner layer. Provide an air introduction gap that communicates with the outer layer and the inner layer from the air introduction hole. The introduction of air into the separation zone can be separated is obtained by the performed by the air introduction gap.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
First Embodiment (FIGS. 1 to 4)
The squeeze container 10 is an assembly of a container main body 11, an inner stopper 12, a cap 13, and a valve body 14.
[0008]
As shown in FIGS. 1 and 2, the container body 11 includes an outer layer 21 and an inner layer 22 that is detachably stacked on the outer layer 21. The container body 11 is manufactured by blow molding a laminated parison 23 (FIG. 3) of an outer layer 21 and an inner layer 22. The outer layer 21 is deformed by the squeeze and is restored when the squeeze is released to maintain the external shape of the container body 11. The inner layer 22 is an inner bag that is separable and deformable from the outer layer 21.
[0009]
The container body 11 has a screw portion 25 for screwing the cap cylinder 41 holding the valve body 14 and the inner plug 12 on the outer periphery of the mouth portion 24, and a lower end inner peripheral portion of the cap cylinder 41 of the cap 13. A fitting shoulder 26 is provided. The container body 11 is provided with an air introduction hole 27 in the outer layer 21 of the mouth portion 24, and air is introduced between the outer layer 21 and the inner layer 22 when the outer layer 21 is restored to maintain the outer shape of the container body 11. At the same time, the separation of the inner layer 22 can proceed.
[0010]
The inner plug 12 can be fitted into the opening of the mouth portion 24 of the container body 11 and includes a discharge passage 31 communicating with the inside of the container body 11, and is screwed into the outer peripheral surface of the mouth portion 24 and the mouth portion 24. A suction passage 32 communicating with the air introduction hole 27 is provided via an air inflow passage 45 described later between the cap 13 and the inner peripheral surface of the cap cylinder 41 of the cap 13 that is attached.
[0011]
The cap 13 includes a cap cylinder 41 that is screwed into the screw portion 25 of the mouth 24 of the container main body 11, and an upper lid 42 that is hinged to the cap cylinder 41. The cap cylinder 41 is provided with a discharge port 44 that can be sealed by a seal 43 of the upper lid 42, and is screwed into the mouth portion 24 of the container body 11, and between the mouth portion 24 of the container body 11. While holding the inner plug 12 and the valve body 14, the inner peripheral portion of the lower end is brought into close contact with the fitting shoulder portion 26 of the mouth portion 24 of the container body 11 to form an air inflow path 45 between the outer peripheral surface of the mouth portion 24. To do. The cap cylinder 41 includes a suction port 46 that can be sealed by the suction valve 52 of the valve body 14.
[0012]
The valve body 14 is held by the cap cylinder 41 of the cap 13 while being fitted to the inner plug 12, and the contents are discharged from the discharge port 44 by opening the discharge passage 31 of the inner plug 12 only in the contents discharge direction. A discharge valve (check valve) 51 is provided, and the suction port 46 of the cap 13 is opened only in the air introduction direction so that air is introduced from the suction passage 32, the air inflow passage 45, and the air introduction hole 27 to the inner side of the outer layer 21. A suction valve (check valve) 52 that can be introduced between the layers 22 is provided.
[0013]
However, the squeeze container 10 employs the following configuration in order to ensure that the entire shape can be discharged to the end while the external shape of the squeezed container body 11 can be smoothly restored.
[0014]
Two adhesive bands 28 in which the outer layer 21 and the inner layer 22 of the container main body 11 are not separated from each other are arranged at two positions in the circumferential direction of the container, in this embodiment, two positions in the diameter direction of the container main body 11 (two positions left and right symmetrical). And extends from the bottom in the container height direction to the mouth 24. The air introduction holes 27 are provided in the outer layer 21 corresponding to each of the separation bands 29. The adhesive band 28 is constituted by an adhesive layer 28A provided between the outer layer 21 and the inner layer 22 over the entire height range of the container body 11 over the entire length of extrusion when the laminated parison 23 is extruded. Is done.
[0015]
A content passage (liquid passage) 30 can be formed between the inner layer 22 separated from the outer layer 21 of the container body 11 and the adhesive band 28. The passage 30 is formed by the following (A) and / or (B).
[0016]
(A) A certain curvature is secured in the root portion 22A of the inner layer 22 separated from the outer layer 21 by the side of the adhesive band 28 by setting the width dimension along the container circumferential direction of the adhesive band 28, and the like. The passage 30 is surrounded by the portion 22A.
[0017]
(B) Sum of lengths of separation bands <[(2 × distance of opposing adhesive bands 28, 28) + sum of lengths of respective adhesive bands]. According to this, the inner layers 22 of the opposing separation bands 29 always form a constant passage 30 (gap) between them even when they are closest.
[0018]
In the container body 11, at least one of the inner peripheral surface of the outer layer 21 provided with the air introduction hole 27 and the outer peripheral surface of the inner layer 22 facing the air introduction hole 27 is formed in a concave shape in advance. If an air introduction gap 31 (not shown) that communicates with the air introduction hole 27 is provided on the inner peripheral surface of the outer layer 21 and / or the outer peripheral surface of the inner layer 22, the outer layer 21 extends from the air introduction hole 27. And air can be reliably introduced between the inner layer 22 and the inner layer 22.
[0019]
At this time, in the present invention, when the laminate peeling container is used, for example, when the outer layer 21 is made of high-density polyethylene, low-density polyethylene, polypropylene, or the like, the inner layer 22 is made of nylon, eval, PET, or the like. Is used. When nylon, eval, PET, or the like is used as the material for the outer layer 21, high-density polyethylene, low-density polyethylene, polypropylene, or the like is used as the material for the inner layer 22. As the resin for the adhesive layer, an adhesive polyolefin (trade name Admer or the like) that can adhere the outer layer 21 and the inner layer 22 is used. Further, the container body may be separately molded and combined into an outer container and an inner container. For example, the outer container is blow-molded using polyethylene, polypropylene, etc., and the inner container is formed of a film of polyethylene, polypropylene, etc. The adhesive band can also be made by heat welding or adhesive.
[0020]
Therefore, according to this embodiment, there are the following actions (FIG. 4).
(1) In the container height direction of the squeeze container 10, the inner layer 22 separated from the outer layer 21 forms a passage 30 for contents between the adhesive band 28. For this reason, in the process of squeezing the container body 11 to discharge the contents and shrinking and deforming the inner layer 22, the opposing inner layer 22 is first on the upper side than the lower side in the container height direction. There is no such thing as being in close contact with the entire cross section, and the contents can surely flow from the lower side to the upper side discharge port 44 through the passage 30 described above.
[0021]
(2) Since the adhesive band 28 between the outer layer 21 and the inner layer 22 is provided in a part of the container circumferential direction, the inner layer is restored when the outer layer 21 is restored after the contents are discharged by squeezing the container body 11. 22 can always be separated from the outer layer 21 in the entire region in the container height direction, and the restoring property of the outer layer 21 is not hindered. Accordingly, in combination with the above (1), the entire shape can be reliably discharged to the end while the external shape of the squeezed container 10 can be restored smoothly.
[0022]
(3) Two adhesive bands 28 for the outer layer 21 and the inner layer 22 are provided, and the air introduction holes 27 are provided corresponding to the separation bands 29 sandwiched between the adjacent adhesive bands 28, 28, thereby opposing each other. The inner layer 22 is separated from the outer layer 21 and contracted and deformed in a line-symmetric manner, and the passage 30 for the contents can be stably formed between the inner layer 22 and the adhesive band 28.
[0023]
(4) An air introduction gap 31 (not shown) is formed in advance between the outer layer 21 and the inner layer 22 through which the air introduction hole 27 communicates. Accordingly, air is reliably introduced into the separation zones 29 from the air introduction holes 27 corresponding to the two separation zones 29 of the above (3) at the same time, and the opposite inner layers 22 are reliably joined together to the outer layers 21. From this point, separation and deformation can be performed stably and reliably in a line symmetrical manner.
[0024]
Second Embodiment (FIG. 5)
The difference between the squeeze container 10A of the second embodiment and the delamination container 10 of the first embodiment is that only the outer layer 21 corresponding to one of the separation bands 29 sandwiched between adjacent adhesive bands 28 has the above-described air introduction hole. 27 is provided. In the squeeze container 10A, when the contents are discharged by squeezing the container body 11, only the inner layer 22 on the side of the separation band 29 provided with the air introduction hole 27 among the opposed inner layers 22 and 22 is provided. Is separated from the outer layer 21, and the separated inner layer 22 is inverted from the base portion 22A with the adhesive band 28 on both sides and contracted and deformed into a U shape (FIG. 5). Even in this squeeze container 10A, a constant curvature is applied to the base portion 22A of the inner layer 22 separated from the outer layer 21 on the side of the adhesive band 28 by setting the width dimension of the adhesive band 28 along the container circumferential direction. By securing the passage 30 at the base portion 22A, the entire shape can be reliably discharged to the end while the external shape of the squeezed container 10A can be smoothly restored.
[0025]
In the implementation of the present invention, in the container main body 11, the container circumferential length of the separation band 29 where the outer layer 21 and the inner layer 22 are separated can be made smaller than the container half-circumferential length. That is, in this way, even when only one wide adhesive band 28 is provided in the container circumferential direction, the opposing inner layer 22 is located above the lower side in the container height direction before the entire area of the cross section. It can be avoided that they are in close contact.
[0026]
In the practice of the present invention, three or more adhesive bands 28 may be provided. Further, at this time, air introducing holes 27 may be provided corresponding to each of the separation bands 29 sandwiched between the adjacent adhesive bands 28 among the three or more adhesive bands 28.
[0027]
In the practice of the present invention, the adhesive band 28 is formed over the entire region of the squeeze container 10 in the container height direction, but it may be not only a continuous adhesive band but also a discontinuous adhesive band.
[0028]
Further, the squeeze container according to claims 1 to 3 provided with the agent application tool, for example, the inside of the handle of the application tool such as a comb, brush, brush, etc. and the discharge port of the squeeze container communicate with each other. Is configured such that the contents can be applied by being discharged and held between comb teeth and comb teeth through the inside of the handle of the application tool from the squeeze container.
[0029]
【The invention's effect】
As described above, according to the present invention, in the squeeze container, it is possible to reliably discharge all the contents to the end while making it possible to smoothly restore the appearance of the squeezed container.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a container body of a squeeze container according to a first embodiment.
FIG. 2 is a schematic view showing the squeeze container corresponding to the view along the line II-II in FIG.
FIG. 3 is a schematic view showing a laminated parison.
FIG. 4 is a schematic diagram showing a discharge process of the internal solution according to the first embodiment.
FIG. 5 is a schematic view showing a discharge process of the content liquid according to the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Squeeze container 11 Container main body 21 Outer layer 22 Inner layer 27 Air introduction hole 28 Adhesive zone 28A Adhesive layer 29 Separation zone 30 Passage 31 Air introduction gap 52 Suction valve

Claims (4)

A squeeze container that constitutes a container body with an outer layer and an inner layer having air introduction holes, and introduces air between the outer layer and the inner layer,
An adhesive band that does not separate the outer layer and inner layer extends in the container height direction in part of the container circumferential direction, and the inner layer separated from the outer layer forms a passage for the contents between the adhesive layer and the adhesive layer. Becomes possible,
While securing a certain curvature at the root of the inner layer separated from the outer layer by the side of the adhesive band, and surrounding the passage at this root,
By forming at least one of the inner peripheral surface of the outer layer provided with the air introduction hole and the outer peripheral surface of the inner layer opposite to the air introduction hole in advance, the inner peripheral surface of the outer layer and A squeeze that provides an air introduction gap that communicates with the air introduction hole on the outer peripheral surface of the inner layer and introduces air from the air introduction hole into the separation zone where the outer layer and the inner layer can be separated. container.   Two adhesive bands are provided, and the two adhesive bands extend from the bottom in the container height direction to the mouth at each of the two positions in the diameter direction in the container circumferential direction, and the air introduction hole is formed in the separation band. The squeeze container according to claim 1 provided corresponding to each.   The squeeze container according to claim 2, wherein the sum of the lengths of the separation bands is smaller than the sum of the value of twice the distance of the opposing adhesive bands and the length of each adhesive band.   The squeeze container in any one of Claims 1-3 which provided the agent application tool.

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