JP2009149323A - Double container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a sufficient space to be present between an inner bag and an outer container, in particular, its upper section when using a discharging container using the double container including a delamination bottle. <P>SOLUTION: A double container comprising an outer container 3 and an inner bag 4 for storing liquid has a contour which is downwardly tapered. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a double container having an outer container and an inner bag.

  Two-component hair cosmetics such as a two-component hair dye or a decoloring agent comprising a liquid first agent containing an alkaline agent and a liquid second agent containing hydrogen peroxide are known. This two-component hair cosmetic is used by mixing the first agent and the second agent at the time of use, and discharging the mixture from a discharge container such as a squeeze container or a pump container (Patent Document 1). In addition, when a delamination bottle is used for such a discharge container, the inner bag may be peeled from the outer container and squeezed according to the discharge of the liquid in the bottle, so that the discharge container can be used regardless of whether it is upright or inverted. Since it becomes possible, hair dyeing operation etc. become easy (patent document 2).

JP 2004-339216 A JP 2003-93139 A

  In the case of use of the delami bottle, if the inner bag and the outer container are not reliably peeled upward, the intake from the outside of the bottle between the outer container and the inner bag may not be smoothly performed. For this reason, in a squeeze container using a delami bottle, the container may be deformed and difficult to discharge even if the next squeeze is attempted.

  In addition, in a squeeze container provided with a former cap, a space formed between the outer container and the inner bag when the air between the outer container and the inner bag is to be used as foam generation air. However, there is a problem that air for generating bubbles cannot be sufficiently supplied unless it exists in the vicinity of the former cap above the container.

  In contrast, according to the present invention, when a discharge container such as a squeeze container using a double container such as a delami bottle is used, a sufficient space exists between the outer container and the inner bag, particularly above the inner container. With the goal.

  When the outer shape of the double container has a constricted shape, the present inventor applies a downward force to the inner bag on the shoulder portion of the bottle by injecting liquid into the bottle, and the inner bag is surely attached from the outer container. I found it to leave.

  That is, the present invention provides a double container having an outer container and an inner bag for containing a liquid, and the container outer shape is a constricted shape.

  The double container of the present invention has a constricted outer shape. Therefore, when liquid is injected into the inner bag, the liquid accumulates downward and the air between the outer container and the inner bag moves upward. As a result, the inner bag is separated from the outer container at least above the shoulder. For this reason, a space can be present between the outer container and the inner bag above the shoulder of the double container used as the discharge container, and the discharge operation can be performed smoothly.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components.

  FIG. 1 is a perspective view (a), a cross-sectional view (b), and a top view of a squeeze foamer container 1 in which a former cap 10 is attached to the mouth of a delamination bottle 2 which is an embodiment of the double container of the present invention. c), and FIG. 2 is an enlarged cross-sectional view of the former cap 10.

  The delami bottle 2 includes an outer container 3 and an inner bag 4 which is easily laminated on the outer container 3.

  The outer container 3 is made of a synthetic resin such as polyethylene or polypropylene having a thickness of 0.4 to 1.5 mm, and has a squeeze property that is deformed by pressing and is restored by releasing the pressing. On the other hand, the inner bag 4 has a thickness of 0.1 to 0.5 mm and is made of a resin such as nylon, ethylene vinyl alcohol copolymer, polyethylene terephthalate, etc., which has low compatibility with the constituent resin of the outer container 3, and is freely deformable. It is.

  The Delami bottle 2 has a rectangular shape with rounded corners on the upper surface and lower surface, and the outer shape of the body portion is generally a constricted shape, that is, gradually from the upper end to the lower end of the body portion. The diameter is reduced, and the longitudinal cross-sectional shape of the bottle side surface is a reverse taper type. More specifically, preferably, from the viewpoint of easy peeling of the inner bag 4 and the standing stability of the bottle, when the height H of the bottle body is 70 to 200 mm, the width L1 in the longitudinal direction of the upper surface of the body The width L2 in the longitudinal direction of the lower surface of the trunk is 60 to 90%, more preferably 60 to 70%. By adopting such a shape, when the liquid A is injected into the delamination bottle 2, a substantially downward peeling force is applied to the inner bag 4 particularly on the shoulder portion of the bottle, and the inner bag as shown by the arrow in FIG. 4 peels off, and an initial space 5 a is formed between the outer container 3 and the inner bag 4.

  In the present invention, the cross-sectional shape of the delami bottle is not particularly limited, and the cross-sectional shape can be a constricted shape such as a circle or an ellipse. When the cross section is circular, the degree of the bottom squeeze is 60 to 90%, more preferably 60 to 70%, with respect to the bottle height of 70 to 200 mm.

  Since the delami bottle 2 has a constricted shape as described above, when the delami bottle 2 is used as the squeeze foamer container 1, the inner bag is squeezed according to the squeeze operation, and the air outside the bottle is removed. Since the air is sucked between the container 3 and the inner bag 4 and the outer container 3 is reliably restored, the discharge operation can be performed smoothly.

  In particular, in the squeeze foamer container used to discharge the liquid A in the form of foam, the air in the inner space between the outer container 3 and the inner bag 4 is surely present above the shoulder of the bottle. As a result, it is possible to supply sufficient air to the former cap and to discharge foam with high foam quality.

  That is, as shown in FIG. 2, the former cap 10 includes a gas-liquid mixing chamber 12 for mixing the liquid A and the air B in the housing 11 and a mesh member 13 downstream of the gas-liquid mixing chamber 12. A discharge port 14 is provided at one end of the housing 11, and a screw portion 15 that is screwed into the mouth peripheral wall 3 a of the outer container 3 is provided at the other inner wall of the housing 11.

  Further, when the former cap 10 is screwed into the delami bottle 2, the former cap 10 is formed so that a housing inner space 11a including the vent hole 6 formed in the vicinity of the mouth of the outer container 3 is defined. And a seal portion 19 that tightly adheres the housing 11 and the outer container 3 to each other. Further, the plate member 21 that forms the bottom surface of the gas-liquid mixing chamber 12 and the top surface of the peripheral wall of the mouth of the delami bottle 2 are brought into close contact with each other. It has a seal part 23. An intake hole (intake hole with valve) 24 with an intake valve is formed on the top surface of the housing 11.

  Therefore, as a method of using the squeeze foamer container 1, first, the body part of the delamination bottle 2 is pressed and recessed. As a result, the inside of the inner bag 4 is pressurized so that the liquid A passes through the dip tube 16 and is supplied from the liquid inflow hole 17 to the gas-liquid mixing chamber 12, and the inner space 5 between the outer container 3 and the inner bag 4. Air is pushed out into the housing inner space 11 a through the vent hole 6, and the air B is supplied from the air inflow hole 18 to the gas-liquid mixing chamber 12. Therefore, the liquid A is mixed with the air B in the gas-liquid mixing chamber 12 and discharged from the discharge port 14 in the form of bubbles through the mesh member 13. Here, according to the delamination bottle 2, a space 5 a is formed in an upper region from the shoulder portion of the squeeze foamer container 1, that is, a container upper region communicating with the vent hole 6 between the outer container 3 and the inner bag 4. Therefore, it is possible to supply a sufficient amount of air to the gas-liquid mixing chamber 12 and discharge high-quality foam.

  Next, when the pressing of the body portion is released, the outer container 3 returns to the shape before pressing, and the internal space 5 between the outer container 3 and the inner bag 4 is decompressed. Therefore, the air reaching the housing inner space 11a from the discharge port 14 through the air inflow hole 18 by appropriately adjusting the hardness of the valve body of the valved intake hole 24 according to the viscosity of the liquid A and its bubbles. Prior to the inflow path, air flows into the housing inner space 11a from the valved intake hole 24, enters the inner space 5 from the vent hole 6, and returns the inner space 5 to normal pressure. Thereby, the inner bag 4 is crushed by the discharge amount of the liquid A without the air inflow hole 18 being blocked by the liquid A or its bubbles. Thereafter, by repeatedly pressing and releasing the body portion of the delami bottle 2, the liquid A in the delami bottle 2 can be discharged in the form of foam.

  The double container of the present invention may be a double container in which an outer container having a squeeze property and a deformable inner bag are independently formed in addition to the above delamination bottle.

  Various discharge caps can be attached to the double container of the present invention. For example, a discharge cap 10B having no gas-liquid mixing chamber or mesh member may be attached to the mouth of the double container 2 as in the discharge container 1B shown in FIG. According to the discharge container 1B, when the body of the double container 2 is squeezed, the inner bag 4 is pressurized and the liquid A is discharged from the discharge port 14 through the dip tube 16. Next, when the squeeze is released, the outer container 3 is restored to the shape before the squeeze, the inner space 5 between the outer container 3 and the inner bag 4 is depressurized, and the air enters the housing inner space 11a from the valved intake hole 24. Then, the air flows into the inner space 5 between the outer container 3 and the inner bag 4 through the vent hole 6 formed by the slit 9, peels off the inner bag 4, and returns the inner space 5 to normal pressure. Thereafter, the liquid in the double container 2 can be discharged in a liquid state by repeating squeezing and releasing the same in the same manner. Here, since a space is always formed in the container upper region communicating with the vent hole 6 between the outer container 3 and the inner bag 4 of the double container 2 of the discharge container 1B, the inner space 5 is at normal pressure. When returning to step (b), the inner bag 4 is quickly peeled off from the outer container 3, and the squeeze operation can be continued smoothly.

  The double container of the present invention is a container that combines any discharge device such as a former cap, a discharge cap, a pump dispenser, etc., and stores and discharges hair cosmetics and other cleaning agents used in baths, kitchens, toilets, etc. Useful as.

It is the perspective view (a), sectional drawing (b), and top view (c) of a squeeze foamer container. It is an expanded sectional view of a former cap. It is an expanded sectional view of a discharge cap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1B squeeze foamer container 2 Delami bottle, double container 3 Outer container 3a Mouth peripheral wall 4 Inner bag 5 Internal space 5a Initial space 6 Vent hole 10 Former cap 10B Discharge cap 11 Housing 11a Housing inner space 12 Gas-liquid mixing chamber 13 Mesh member 14 Discharge port 15 Screw part 16 Dip tube 17 Liquid inflow hole 18 Air inflow hole 19 Seal part 21 Plate member 23 Seal part 24 Inlet hole with valve A Liquid B Air

Claims (3)

  A double container comprising an outer container and an inner bag for containing a liquid, wherein the outer shape of the container is a tapered shape.   The double container according to claim 1, wherein the outer container has a squeeze property.   The double container according to claim 2, wherein a foam cap is provided at the mouth, and air in a space between the outer container and the inner bag is supplied to the former cap as air for foam generation.

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