JP2602764Y2 - Stacked container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated container, and more particularly to a laminated container having a structure in which air flows between an outer container and an inner container as contents are poured out.

[0002]

2. Description of the Related Art Conventionally, as a laminated type container, an outer container formed of a flexible synthetic resin and provided with a mouthpiece portion, and a shrinkable inner container which is housed in the outer container and stores contents are provided. In some cases, a hole is formed in the bottom of the outer container, and a check valve for intake is attached to the hole.

[0003] When the outer container is squeezed, the contents are poured out from the spout, and the inner container and the outer container shrink. When the squeeze operation is stopped, air is sucked between the inner container and the outer container, and only the outer container returns to the original shape.

Further, in this container, a hole for attaching a check valve is formed in the bottom of the outer container, and a check valve formed separately is inserted into this hole so as to provide a slit in a rubber body. It was a structure.

[0005]

However, in the conventional structure as described above, since the outer container is subjected to processing such as perforation, there is a problem in that the outer appearance is impaired. Also, it was necessary to secure a space for installing the check valve in the container. Also
Due to the shrinkage of the inner container, the contents are biased in the inner container
In some cases, it remained unpourable.

A special outer container provided with a hole for a check valve,
In addition, since a check valve must be provided, there is also a problem that the cost increases. In addition, the check valve is used for squeezing the outer container.
With the work, the habit of opening the hole of the outer container tends to stick
Therefore, there is a possibility that it cannot withstand long-term use. The present invention has been made in view of the above-mentioned circumstances, and does not require any processing on the outer container, and reliably discharges the contents.
It is easy to manufacture , and can be used stably for a long time.
It is an object of the present invention to provide a laminated container having a usable structure.

[0007]

Means for Solving the Problems The present invention has the following configuration to achieve the above object. That is, an outer container 1 formed of a flexible synthetic resin and having a mouthpiece portion 3, and a shrinkable inner container 2 which is provided inside the outer container 1 and stores contents, is provided. The airtightly connected cylinder 5 is fitted into the mouthpiece 3, and between the cylinder 5 and
The injection tube 4 is inserted into the inside of the cylindrical body 5 so as to form the space 6 having the air inlet 21 , and the head is inserted into the injection tube 4.
Are fixed and a plurality of suction holes for sucking the contents in the inner container 2
Insert straw 22 with inner side 23 into inner container 2
A ventilation hole 7 communicating with the space 6 is formed in the outer peripheral surface 16 of the cylindrical body 5, an intake passage 9 is provided in which the outside 8 of the inner container 2 communicates with the outside air, and the ventilation hole 7 is covered. Flexible and resistant to tearing
A film 10 is wound around an outer peripheral surface 16 of the cylindrical body, and an intake check valve 17 for opening and closing the vent hole 7 is installed. On the other hand, a flexible thin plate is radially formed to form a peak portion 12. Forming
A check valve for dispensing 15 having a slit 14 at a top portion 13 intersecting with each other is disposed in a dispensing passage 11 in a dispensing cylinder 5.

[0008]

[0009]

In this container, the cylindrical body 5 and the pouring cylinder 4 are attached to the mouthpiece portion, the pouring check valve 15 is provided in the pouring passage 11, and the intake check valve 17 is provided in the intake passage 9 respectively. Was. When the outer container 1 is squeezed by attaching the pouring tube 4 to the mouthpiece portion, the inner volume is reduced, and pressure is applied to the inner container 2.
When the inner container 2 is pressed, the contents of the inner container 2 are poured out from the outlet 24 of the pouring cylinder 4, and the capacity of the inner container 2 is reduced only by the amount of the pouring.

When the squeezing operation of the outer container 1 is stopped, the outer container 1 returns to the original shape and the original volume by the restoring force of the outer container 1.
When the outer container 1 returns to the original shape, air is sucked between the inner container 2 and the outer container 1 through the check valve 17 for intake. The intake check valve 17 is made of a flexible non-tear film 10.
The air holes 7 are evenly closed by being formed by winding
Squeezing operation of the outer container 1
It is hard to have a habit and works stably for a long time.

Further, the check valve 15 for pouring has a configuration in which a ridge 12 is formed by radially molding a soft and flexible thin plate, and a slit 14 is provided at a top 13 intersecting with each other. In this case, the center of the intersecting top 13 is retracted to the periphery, the valve is opened, and the contents are discharged. Therefore, the contents can be poured from the center of the spout without any deviation at any angle.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of the laminated container of the present invention, FIG. 2 is an enlarged sectional view of a mouthpiece, FIG. 3 is a perspective view of a tubular body, and FIG. 4 is a perspective view of a check valve for pouring.

The outer container 1 having a shoulder portion and a bottom portion is a container made of an elastic and flexible synthetic resin such as polyethylene or polypropylene formed by a general method such as blow molding or injection molding. The outer container 1 has such a flexibility that it can be easily squeezed by hand, and the shape and the volume quickly return to the original shape when the squeezing operation is stopped.

The outer container 1 has a mouthpiece 3 at the upper part,
A screw 1 for screwing a cap (not shown) to the mouthpiece 3
8 are formed, usually 5-20 cm in height and 1 cm in diameter
It can be about 3 cm.

A cylindrical body 5 fixed by an upper flange is hermetically fitted to the cylindrical section 3. This cylinder 5
Can be produced by a method such as injection molding using a material which is easy to produce, such as polyethylene or polypropylene. An inner cylinder 20 made of polyethylene, polypropylene, or the like and having an open upper surface is fitted into the inner periphery thereof . In contact with the inner side surface of the inner cylinder 20, the intake port 2
The dispensing tube 4 is inserted so as to create a space portion 6 having 1.

The inner container 2 has, for example, a thickness of 0.05 to
It is about 0.2 mm and has a bag-like shape made of a flexible and hard-to-tear plastic film such as polyethylene, which is housed in the outer container 1. This inner container 2
The opening 19 of the inner container 2 is airtightly joined to the lower end of the cylindrical body 5 by being previously bonded to the lower end of the cylindrical body 5 by a method such as heat welding. Then, it is folded or rolled up and loaded into the outer container 1 in a state where almost no air enters the inside.
Next, the check valve 15 for pouring in the pouring path 11 and the straw 22
Before mounting the inner cylinder 20, the inner cylinder 20 and the extraction cylinder 4 are completely mounted in the cylindrical body 5 after the contents are filled into the inner container 2 from the mouthpiece 3 by a general filling method. In this case, the cylinder 5 is
When the inner container 2 is inflated by filling the contents with some gaps therein, the air between the outer container 1 and the inner containers 2 is discharged to the outside through the gaps.

The space 6 between the cylindrical body 5 and the pouring cylinder 4
Communicates with a ventilation hole 7 provided on the outer peripheral surface of the cylindrical body 5 through a small hole 21 provided in the inner cylinder 20. This small hole 21
At least one is provided. Accordingly, an intake passage 9 is formed in which the outside 8 of the inner container 2 communicates with the outside air via the intake port 21 penetrating the space 6.

As shown in FIG. 3, the vent hole 7 is covered with a thin plastic film 10 wound around the outer peripheral surface 16 of the cylinder 5. These are located on the intake passage 9 to form the intake check valve 17.

On the other hand, in the pouring passage 11 in the pouring cylinder 4, FIG.
As shown in FIG. 1, a thin silicon rubber or the like is molded, four ridges 12 are formed radially, and a check valve 15 for pouring is provided in which a slit 14 is provided at a top 13 intersecting with each other in a cross shape. ing.

Further, a straw 22 whose head is fixed in the pouring tube 4 is inserted into the inner container 2. This straw 2
A plurality of suction holes 23 serving as contents passages are provided on the side surface of the container 2. The contents in the inner container 2 are sucked through the suction holes 23 and sent to the pouring cylinder 4 through the straw 22.
The straw 22 having such a suction hole 23 is provided with an inner container.
Since the contents are inhaled and poured out evenly from the inside, the inner container 2 contracts at the top while leaving the contents at the bottom ,
Alternatively, leave the contents in the middle part
Can be prevented from shrinking so as to close .

The container of the present embodiment has the above-mentioned structure. In order to pour out the contents filled in the inner container 2, the side of the outer container 1 is squeezed. Then, the air in the outer container 1 is compressed, and accordingly, the inner container 2 is also compressed. During this pressurization, the contents in the inner container 2
Through the outlet 24.

In this case, the pressure inside the outer container 1 becomes high, and the film-shaped intake check valve 1 wound around the outer peripheral surface 16 of the cylindrical body 5.
7 is pressed against the outer periphery of the cylindrical body 5 and closes the ventilation hole 7, so that no air flows out of the outer container 1.

When the outer container 1 is released, this shape returns to its original state, so that the pressure inside the outer container 1 is reduced. Then, the silicon rubbers forming the slits 14 adhere to each other, and
The check valve 15 for injection is closed, and the check valve 17 for suction is opened evenly from the cylinder 15 by the pressure of the air flowing from the vent hole 7. And outer container 1 and inner container 2
When air flows in during this time, the check valve 17 for intake air is
7 is evenly closed, and it becomes possible to pour out again.

The inner container 2 remains in a contracted state,
Since the shrinkage further decreases as the amount of the content decreases, it is easy to pour even a highly viscous emulsion or the like. Further, since no air enters the inner container 2 and the contact with the outside air is extremely small, the inner container 2 is suitable for storing contents that are deteriorated by oxidation.

[0025]

As described above, according to the present invention, the check valve 17 for intake is formed on the intake path, and the check valve 15 for discharging is provided on the discharge path of the contents. Does not require any processing. Therefore, the appearance of the container is not impaired.

Further, the structure of the outer container is simplified, and the check valve 15 for pouring is formed by bending a flexible thin plate to form the ridges 12 radially, and the slits 14 are formed in the tops 13 intersecting each other.
Is provided, so that the contents can be poured from the center of the spout at any position without offsetting. In the inner container 2
Inserts a straw 22 having a plurality of intake ports 23 on the side.
The inner container 2 is shrunk evenly
Contents can be poured out and the contents
The situation where the container 2 shrinks can be prevented. Also suck
The non-return valve 17 is made of a flexible non-tear film 10.
Since it is formed, the ventilation holes 7 are opened and closed evenly.
Therefore, the shape of the outer container 1 becomes habitual due to the squeezing operation.
It is difficult to operate stably for a long time
is there.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the laminated container of the present invention.

FIG. 2 is an enlarged sectional view of a mouthpiece portion.

FIG. 3 is a perspective view of a cylindrical body.

FIG. 4 is a perspective view of a check valve for dispensing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer container 2 Inner container 3 Mouth part 4 Outlet cylinder 5 Cylindrical body 6 Space part 7 Ventilation hole 8 Outside of inner container 9 Intake path 10 Film 11 Outlet path 12 Mountain part 13 Top part 14 Slit 15 Check valve for pouring

──────────────────────────────────────────────────続 き Continued on the front page (73) Utility model holder 592043805 ONE PROCTER & GANB LE PLAZA, CINCIN NAT I, OHIO, UNITED STATS ES OF AMERICA (56) References JP-A-4-189781 (JP, A) Hei 1-73375 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 83/00 B65D 77/06

Claims (1)

(57) [Scope of request for utility model registration] 1. An outer container (1) formed of a resilient and flexible synthetic resin and provided with a mouthpiece (3), and a shrinkage contained in the outer container (1) and containing contents. A possible inner container (2) is provided, and a cylinder (5) in which the inner container (2) is air-tightly connected is fitted into the mouthpiece (3), and an air intake is provided between the inner cylinder (5) and the cylinder (5). Inserting the pouring cylinder (4) inside the cylindrical body (5) so as to form the space (6) having the mouth (21),
The head is fixed in this pouring cylinder (4) and the inner container (2)
A plurality of suction holes (23) for sucking contents are provided on the side.
A straw (22) is inserted into the inner container (2), and a ventilation hole (7) communicating with the space (6) is formed in the outer peripheral surface (16) of the cylindrical body. An intake path (9) is provided in which the outside (8) communicates with the outside air, and covers an air hole (7).
Flexible and hardly tearable film (10)
A check valve (17) for intake which opens and closes the ventilation hole (7) by being wound around (16) is installed, while a flexible thin plate is radially formed to form a crest (12). And a dispensing check valve (15) provided with a slit (14) at a top portion (13) that intersects with each other, disposed on a dispensing passage (11) in a dispensing cylinder (5). container.