JP2606037Y2 - 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 the contents are poured out.

[0002]

2. Description of the Related Art Conventionally, as a laminated 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. 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] In this case, a discharge check valve for suppressing intake air is provided in the discharge path, and when the outer container is squeezed, the contents are discharged from the outlet, and the inner container and the outer container contract. When the squeeze operation is stopped, air is sucked between the inner container and the outer container, and only the outer container returns to its original shape.

Further, this container has a structure in which a hole for attaching a check valve is formed in the bottom of the outer container, a slit is formed in a rubber body in this hole, and a check valve formed separately is inserted. there were.

[0005]

However, in the conventional structure as described above, since the outer container is subjected to processing such as perforation, there is a problem that the appearance is impaired. Also, it was necessary to secure a space for installing the check valve in the container.

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 shrinkage of the inner container becomes uneven
Contents may remain in the inner container.
Was. The present invention has been made in view of the above-described circumstances, and does not require any processing on the outer container .
It is an object of the present invention to provide a laminated container having a structure that does not cause residue and is easy to manufacture.

[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 resilient and flexible synthetic resin and provided with a mouthpiece (3), and a shrinkable content which is contained in the outer container (1) and stores contents. Tableware (2)
And a spouting tube (4) having a spouting portion (24) and hermetically inserted into the mouthpiece portion (3), the spouting portion of the spouting tube (4). The inner container (2) is air-tightly connected to an inner opening (5) formed on the opposite side of (24), and the head is fixed to the discharge tube (4) and the suction hole (2) is formed.
A straw (28) having an inner container (9) is inserted into the inner container (2), and an inlet path (30) for communicating the outside of the inner container (2) with the outside air is formed in the discharge cylinder (4). A valve body storage section (12) is provided on the intake path (30), and the valve body storage section (12) is in close contact with the surface where the intake path (30) opens when the outer container (1) is pressurized. To block the intake passage (30) and insert a sheet-shaped valve element (11) that opens the intake passage (30) when inhaling outside air to form an intake check valve (19). The discharge passage (21) for the contents interposed between the portion (24) and the inner opening (5) is provided with a check valve for discharging (2).
0).

[0008]

[Action] A check valve 20 for pouring is provided in a pouring path 21 of a pouring cylinder 4,
The intake passage 30 is provided with a check valve 19 for intake. When the outer container 1 is squeezed by attaching the pouring tube 4 to the mouth tube portion 3, the inner volume decreases, and pressure is applied to the inner container 2. When the inner container 2 is squeezed, the contents of the inner container 2 pass through the suction hole 29 into the straw 28.
Through the spout port 24, and the capacity of the inner container 2 is
Only the amount of dispensed decreases. When the squeezing operation of the outer container 1 is stopped, the original shape and the original volume are restored 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 19 for intake .

The sheet-shaped valve element 11 has a flexible and elastic shape, and is made of a general plastic material such as existing polyethylene and polypropylene.
It can be easily formed by a general manufacturing method such as extrusion molding.

[0010]

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 cross-sectional view of the laminated container of the present invention, FIG. 2 is an enlarged cross-sectional view of a mouthpiece, and FIG. 3 is an exploded perspective view of a pouring tube.

The outer container 1 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. When the squeezing operation is stopped, the shape and capacity are quickly returned to the original shape. The mouthpiece 3 is provided with an airtight fitting. The outer container 1 usually has a height of 5 to 20 cm and a diameter of 1 to 3 cm.
cm.

A screw 25 for screwing with a cap (not shown) is formed in the barrel 3, and can be manufactured by a general manufacturing method using a suitable and preferable material such as polyethylene or polypropylene.

The inner container 2 is in the form of a bag made of a plastic film such as polyethylene having a thickness of about 0.05 to 0.2 mm, which is flexible and hard to tear. The opening 6 of the inner container 2 is connected to the inner opening 5 at the lower end of the pouring tube 4.
Then, they are bonded in an airtight manner by a method such as heat welding.

The inner container 2 is loaded in the outer container 1 in a state where almost no air enters into the inner container 2 in a folded or rolled state. After fitting the dispensing cylinder 4 into the mouthpiece 3,
The contents are filled into the inner container 2 from the pouring tube 4 in a general manner before the spout 24, the check valve 20 for pouring, and the straw 28 are attached. In this case, when the inner container 2 expands due to the filling of the contents, the air in the space 17 between the outer container 1 and the inner container 2, that is, the space 17 is discharged to the outside through the lower hole 16 provided in the pouring tube 4. .

The discharge tube 4 is cylindrical, and a flange 7 is formed on the outer periphery of the outer upper wall portion 9 to be engaged with the upper end of the mouth tube portion 3. An outer peripheral groove 8 is provided between the outer wall 9 and the valve seat 10 at an upper portion of the discharge tube 4.

The lower end 31 of a separately formed cylindrical spout 24 is inserted into the outer peripheral groove 8 with a slight gap. The spout 24 has its lower end 31 pressed into contact with the inner wall of the outer circumferential groove 8 of the pouring cylinder 4 and is inserted, and the side flange 27 abuts against the flange 7 and is fixed.

The pouring cylinder 4 further has a pouring path 21 inside thereof.
And the lower part thereof is an inner opening 5 protruding from the bottom surface 15.
It has become. A concave portion 22 is cut or formed in the outer wall portion 9 and has a valve housing portion 12. As shown in FIG. 5, the width w of the inner end of the concave portion 22 is small, and is enlarged like the inner width wa. The sheet-shaped valve element 11 having a width dimension larger than W and smaller than Wa is inserted vertically into the recess 22 and held on a side surface inside the recess 22.

The valve body 11 is made of a flexible and elastic material such as polyethylene or polypropylene, and is manufactured by a general method such as inflation molding or extrusion molding. The shape of the sheet-shaped valve element 11 generally conforms to the shape of the recess 22, and is formed so as to obtain sufficient airtightness when pressure is applied to the inner wall of the storage section 12 formed by the recess 22. You. The thickness of the valve body 11 is generally equal to or less than the depth D of the concave portion 22 and can be taken out of the storage portion 12 when necessary. An upper hole 13 communicating with the outer surface is provided at the center of the storage portion 12 of the concave portion 22. The outer surface around the upper hole 13 is a concave surface 14.

The outer peripheral groove 8 on the side opposite to the storage section 12
To the bottom, 5 mm ² to 10 mm ² around the lower hole 16 communicating with the bottom surface 15 proximate the inner opening portion 5 is bored. Therefore, the space 17 between the outer container 1 and the inner container 2 is
The valve body 11 communicates with the outside air through an intake passage 30 passing through the lower hole 16, the outer circumferential groove 8, the upper hole 13, and the concave surface 14, and the valve body 11 operates as an intake check valve 19 for preventing a reverse flow of intake air.

On the other hand, a check valve 20 for pouring is provided in a pouring passage 21 interposed between the pouring port 24 and the inner port 5. As shown in FIG. 6, the check valve 20 has a cylindrical shape with an open upper surface, is fitted into the outlet 24, and is sandwiched between the outlet 24 and the valve seat 10. It is fixed to.

At the bottom of the check valve 20 is provided a disc-shaped valve element 18 supported at two points below the inner wall. However, this support may be at one point, for example, and is not limited to two points.

The upper end of the discharge passage 21 of the discharge tube 4 forms a valve seat 10 with which a check valve 20 for discharging is in contact. In the inner container 2, a straw 28 having a head fixed in the pouring tube 4 is inserted. One or more suction holes 29 are provided in the straw 28, and the contents in the inner container 2 are sucked through the suction holes 29 and sent to the discharge tube 4 through the straw 28. The straw 28 having such a suction hole 29 can prevent the inner container 2 from shrinking at the top while leaving the contents at the bottom.

The container of this embodiment has such a structure.
To pour out the contents filled in the inner container 2, the outer container 1
Squeeze the sides of the. Then, the air in the outer container 1 is compressed, and accordingly, the inner container 2 is also compressed. During this pressurization, the content in the inner container 2 is discharged from the spout port 24 through the straw 28. On the other hand, since the film-like valve element 11 of the inner container 2 is pressed against the inner wall of the discharge tube 4 to close the upper hole 13 and block the suction passage, air is discharged from the outer container 1. Does not leak.

When the outer container 1 is released, its shape returns to its original shape, so that the pressure inside the outer container 1 is reduced. Then, the film-shaped intake check valve 19 is sucked in the axial direction on the inside and the upper hole 13 is sucked.
Opens, so that air flows between the outer container 1 and the inner container 2,
It is ready to be poured again.

As described above, the inner container 2 contracts as the amount of the content decreases, so that even a highly viscous latex or the like can be easily poured out. 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.

[0026]

According to the present invention, as described above, the present invention forms an intake path for communicating the outside of the inner container with the outside air in the spout cylinder, and provides a valve element housing on the intake path. In addition, the intake path is shielded by closely adhering to the surface where the intake path is opened, and a sheet-like valve element that opens the intake path is inserted when the outside air is sucked, thereby forming a check valve for intake. Therefore, simplification of the structure of the valve facilitates its formation, reduces the number of manufacturing steps, and achieves cost reduction. In addition, since the operation of the intake check valve is quick, the deformation of the outer container and the returning operation to the original shape become smooth, and the operability of the container is improved.

[0027]

[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 an exploded perspective view of a mouthpiece.

FIG. 4 is an exploded perspective view of the dispensing cylinder.

FIG. 5 is an enlarged view of a valve body storage section.

FIG. 6 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 Inner mouth part 12 Valve body storage part 19 Intake check valve 20 Outlet check valve 21 Outlet path 24 Outlet part

────────────────────────────────────────────────── ─── Continuing from the front page (73) Utility model holder 592043805 ONE PROCTER & GANB LE PLAZA, CINCINNATI, OHIO, UNITED STATS OF AMERICA (72) Creators Stephan, Double, Harding Cincinnati, Ohio, USA , End, Gamble, Plaza (without address), Proctor, End, Gambling, In-company (56) References JP-A-59-74081 (JP, A) JP-A-62-52169 (JP, U) 1986-178375 (JP, U) JP-A-2-69886 (JP, U) JP-A-2-69885 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 83 / 00 B65D 25/16

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 which is contained in the outer container (1) and stores contents. A mouthpiece (3) having a possible inner container (2) and a spout (24)
Container provided with a discharge tube (4) which is airtightly inserted into the container
In the above, the inner container (2) is airtightly connected to an inner opening (5) formed on the opposite side of the pouring opening (24) of the pouring cylinder (4).
First, a straw (28) having a suction head (29) whose head is fixed to the discharge cylinder (4) is inserted into the inner container (2),
In addition, an intake path (30) for communicating the outside of the inner container (2) with the outside air is formed in the discharge pipe (4).
0) is provided with a valve body storage part (12), and in the valve body storage part (12), when the outer container (1) is pressurized, the intake passage (3 ) is provided.
0) is in close contact with the surface where the opening is opened to block the intake path (30),
At the time of intake of outside air, a sheet-like valve element (11 ) for opening an intake passage (30) is inserted to form a check valve (19) for intake, while the extraction part (24) and the inside mouth part (5) are formed. A stacked container characterized in that a check valve (20) for discharging is provided in a discharging path (21) for the contents interposed therebetween.