JP2595396Y2 - Multi-layer press type 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 multi-layer press type container, and more particularly to a multi-layer press type container capable of surely discharging high-viscosity contents contained in an inner container to the end.

[0002]

2. Description of the Related Art As a conventional press-type container, for example, FIG.
There is something like that shown in Reference numeral 50 denotes an outer container. An inner container 51 is fitted to the mouth of the outer container 50, and the inner container 51 is suspended in the outer container 50. At the bottom of the outer container 50, a check valve body 52 for inflow of air is provided.
At the time of pressing 0, the outer container 50 is closed, and when the outer container 50 is restored, it is opened. The outer container 50 is made of a flexible synthetic resin, for example, a polyolefin-based resin.
1 is also made of the same synthetic resin material. The inner container 51 contains high-viscosity contents such as toothpaste and cosmetics. The inner container 51 includes an adapter 51a and a bag 5
1b comprising a flange-shaped overhang
The mouth of the bag body 51b is welded to and suspended from 1a.
A valve seat 53 is formed in the adapter 51a, and a ball 55 lightly pressed by a coil spring 54 is provided on the valve seat 53.

In such a pressurized container, when the outer container 50 is pressed by hand, the air which has flowed between the outer container 50 and the bag 51b from the check valve body 52 is already in a pressurized normal state. The contents such as the toothpaste in the bag body 51b push up the ball 55 to be discharged outward from the spout 56. When the pressing of the outer container 50 is released, the outer container 50 is restored to the original shape by the air flowing from the check valve body 52.

[0004]

[Problem to be solved by the invention] However, this invention has the following disadvantages. Since the outer container 50 and the inner container 51 are formed separately, the inner container 51 must be inserted into the outer container 50 and assembled separately, which is very troublesome in the manufacturing process. When contents having a high viscosity such as toothpaste powder are stored in the inner container, there is a disadvantage that the contents remain in the inner container because the contents are not discharged to the end.

The present invention has been made in view of such a conventional problem. The outer container and the inner container are manufactured by simultaneous molding, and the contents do not remain in the inner container. It is an object of the present invention to provide a multi-layer press-type container capable of discharging the ink to the end.

[0006]

SUMMARY OF THE INVENTION A multilayer press type container of the present invention.
It is an outer layer, an intermediate layer having a non-in-adhesive, and gas barrier <br/> rear property to the outer layer and the inner layer, and an adhesive layer interposed between the intermediate layer and the inner layer, the lower end has simultaneously molded resin multi-layer structure in the opening to the container shape, the intermediate layer, Oyo adhesive layer <br/> beauty inner layer, except the mouth portion is closed hermetically closes the lower end opening Yes
And inner container having FLEXIBLE, said outer layer, separate from the inner container
Close the bottom opening at the bottom of the inner container except for the mouth.
A flexible and resilient outer container that tightly surrounds the contents
A check valve is provided between the vessel and the outer container to allow external air to flow.
And a sleeve having an appropriate rigidity is attached to the inner upper half of the inner container . this
In multilayer press-type container, the mouth of the inner container, preferably Ru provided a check valve for blocking the inflow of external air. Sa
Further, it is preferable that the bottom opening of the outer layer be closed by a bottom lid.
New In that case, the external air flows into the bottom lid
A check valve, and enclose a circular cylinder part takes the outer circumference of the check valve upper
Formed , and the tip of the cylindrical portion pushes up the bottom of the inner container.
Those that are in contact with the inverted bottom are more preferred.
No.

[0007]

The operation of the present invention having the above configuration will be described. First, a method for manufacturing a multilayer press-type container according to the present invention will be described .
The container is composed of an intermediate layer, an adhesive layer, and an inner layer.
And a multilayered structure Te, the lower end opening of the inner container and the outer container
Since the co-molded to the shape of the container, it is easy to molding, assembling
The labor of the work is saved. Non-adhesion between outer layer and intermediate layer
Therefore, after molding, the outer container and
It can be easily peeled off. Thereby filling the contents
The inner container opening separately from the outer container.
Can be easily closed.

[0008] In this manner, the multilayer press-type container in which the outer container and the inner container are simultaneously formed is connected between the inner container and the outer container.
The inner container has a closed lower end that is independent of the outer container.
Upright, so that the sleeve is not attached to the inner container.
Half can freely shrink or flip from outer container
You. In addition, the outer container has flexibility, so that the outer container is
Since is provided a check valve which flows the air, by squeezing by hand outer container, crushed lower half of the inner container through the air between the outer container and the inner container, the contents of the inner vessel Mouth
It can be discharged from the part to the outside. Next release your hand,
Air flows in from the check valve and the outer container is restored. At this time
Since the lower half of the inner container is independent of the outer container,
Do not interfere with the restoration of The upper half of the inner container is a sleeve
Has moderate rigidity, so it will not be crushed,
Even if it shrinks somewhat, it will be
To restore.

[0009] By repeating this operation, the lower half of the inner container whereas the contraction I accompanied to the reduction of the contents, the top half of Sri
The contraction is restricted or restored by the probe. did
Accordingly, the lower half of the inner container moves upward so as to be gradually inverted along the sleeve. As a result, the contents in the inner container are pushed up and discharged without waste . Inner mouth
Multi-layer press with a check valve to block the inflow of external air
When the outer container is restored, negative pressure is applied to the inner container.
If so, do not breathe air through the mouth. Also the bottom of the outer layer
When closing the opening with the bottom lid, fill the inner container with the contents.
After filling and closing, the lower end opening of the outer container is easily closed. Further
A check valve through which the external air flows into the bottom lid;
A cylindrical portion surrounding the outer periphery above the check valve is provided, and
The tip of the cylinder pushes the inner container upside down.
If the bottom half of the inner container is twisted
Move upwards regularly without rushing. So one
Layers and contents are discharged without waste .

[0010]

Next, the present invention will be described with reference to the drawings.
In the figure, reference numeral 1 denotes an outer container, and an outer layer 1a of the outer container 1 is made of a polyolefin-based resin, in this embodiment, polyethylene. Reference numeral 2 denotes an inner container, and the inner container 2 includes an intermediate layer 2a, an adhesive layer 2b, and an inner layer 2c. That is,
The intermediate layer 2a is made of saponified ethylene-vinyl acetate copolymer, which is a gas barrier resin, the adhesive layer 2b is made of an adhesive modified polyolefin, and the inner layer 2c is made of polyethylene. Therefore, both the outer container 1 and the inner container 2 are made of an elastic flexible material. That is, polyethylene /
Adhesive layer / Ethylene-vinyl acetate copolymer saponified material / Adhesive layer / Polyethylene
By omitting only the second adhesive layer from the outside, the outer container 1 and the inner container 2 can be separated. The inner container 2
Is performed after filling of the contents 7.

A bottom cover 4 having a check valve 3 for allowing air to flow in from the outside is welded to the bottom of the outer container 1. A check valve 5 for blocking the inflow to 2 is fitted. In the embodiment, the thickness of the outer container 1 is 0.4 to 0.5 mm,
Had a thickness of 0.05 to 0.1 mm. The feature of the present invention is that a sleeve 6 having a certain rigidity is attached to the lower half of the inner container 2. The sleeve 6 is made of a polyolefin resin, for example, polyethylene. In the embodiment, the sleeve 6
Had a thickness of 0.4 to 0.5 mm. In addition, since the bottom lid 4 is provided with the cylindrical portion 4a so as to surround the outer periphery above the check valve, when the bottom lid 4 is welded to the outer container, the bottom half of the inner container is removed.
As a result , the bottom of the inner bag is pushed inward, the inner bag is smoothly inverted with the discharge of the contents, and the inner bag can be easily and regularly raised. It
Discharge until the rising inner bag comes into close contact with the inner surface of the inner container shoulder
Discharges 95% or more of the contents
It becomes possible.

[0012]

As described above, according to the present invention, since the outer container and the inner container can be manufactured by simultaneous molding, there is no need for assembling the container, and the contents are not left in the inner container. It has the effect of being able to discharge to the end.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a multilayer press-type container according to the present invention.

FIG. 2 is a cross-sectional view of an embodiment showing a state in which the contents are discharged without leaving the contents in the container in the multilayer press type container according to the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the multilayer press-type container according to the present invention.

FIG. 4 is an enlarged sectional view of a portion A in FIGS. 1 and 3;

FIG. 5 is a sectional view showing a conventional press-type container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer container 1a Outer layer 2 Inner container 2a Intermediate layer 2b Adhesive layer 2c Inner layer 3 Check valve 4a Cylindrical part 5 Check valve 6 Sleeve

Claims (4)

(57) [Scope of request for utility model registration] 1. An outer layer, which is non-adhesive to the outer layer,
And a container and an intermediate layer having gas barrier properties, and the inner layer, and an adhesive layer that will be interposed between the intermediate layer and <br/> the layer, the lower end is opened
Has simultaneously molded resin multi-layer structure in the shape, before Symbol intermediate layer, adhesive layer and inner layer, close the lower end opening mouth
The inner container has a flexible inner container that is airtightly closed except for the portion , and the outer layer closes the lower end opening separately from the inner container to open the inner container.
Flexible and resilient to hermetically seal the periphery except for its mouth
Check valve for the outer container, to flow outside air between the inner container and outer container having a sex
The provided and, inside the upper half of the inner container, a multilayer press-type container, characterized in that fitted a sleeve having an appropriate rigidity. The mouth of claim 2 wherein said inner container, multilayer press-type container according to claim 1 Symbol mounting, characterized in that a check valve that blocks the flow of outside air. 3. A bottom opening of the outer layer is closed by a bottom lid.
The multi-layer press type according to claim 1 or 2,
container. 4. A pre-Symbol bottom cover, the reverse flowing the external air
A stop valve, and enclose a circular tube section takes the check valve upper periphery of its is formed, and the cylindrical tip pushes up the bottom of the inner container
4. The multilayer press-type container according to claim 3, wherein the container is in contact with the inverted bottom portion.