WO2016125784A1 - Laminated separating container for high-viscosity substances - Google Patents

Abstract

Provided is a laminated separating container for high-viscosity substances, with which it is possible to discharge the content thereof appropriately, and with which it is possible to appropriately suppress the intrusion of outside air into the inner bag after discharge, even if a high-viscosity substance is stored therein. According to the present invention, this laminated separating container comprises a container body for housing high-viscosity substances having a viscosity of at least 100mPa·s at 20°C, and a cap which is fitted to an opening of the container body, the container body comprising an outer shell and an inner bag, the inner bag separating from the outer shell and contracting in response to the reduction in content. The cap comprises a cylindrical portion and a valve part positioned inside the cylindrical portion, the valve part comprising a base portion which protrudes into the inside of the container body, and a connecting part that connects the base portion and the cylindrical part. The base portion is equipped with a flat part having provided thereto an intersecting slit-shaped discharge port, and the connecting part is equipped with a curved part which protrudes towards the outside of the container body. The base part is constituted in such a manner that when pressure is applied to the container body, the flat part is pressed by the high-viscosity substance so as to be pushed out towards the outside of the container body, and the discharge port is opened, and when the pressure on the container body is removed, the flat part returns to a state of protruding into the interior of the container, and the discharge port is closed, thereby preventing the intrusion of outside air into the interior of the inner bag.

Description

Laminated peeling container for high viscosity materials

The present invention relates to a delamination container for high viscosity materials.

Conventionally, there has been known a laminated peeling container that suppresses air from entering the container by peeling and shrinking the inner bag from the outer shell as the contents are reduced (for example, Patent Document 1).

In the delamination container of Patent Document 1, it is assumed that a liquid having a low viscosity such as soy sauce is accommodated. As described in FIG. 2 and Paragraph 42 of Patent Document 1, compression is performed by applying pressure to the container. When deformed, the valve body portion 42 provided at the discharge port is slid along the container axial direction to open the communication recess 43, thereby allowing the content to be discharged. In addition, when the pressure on the container is removed, the valve body 42 is returned to the original position and the communication recess 43 is closed, thereby preventing the outside air from entering the inner bag.

JP 2013-147295 A

The configuration of Patent Document 1 is suitable for a liquid having a low viscosity. When the present inventors applied the configuration of Patent Document 1 to a high-viscosity product, the high-viscosity product obstructed the valve body 42. It has been found that there may be a problem that the return is hindered and the outside air enters the inner bag.

The present invention has been made in view of such circumstances, and even when a high-viscosity material is accommodated, the contents can be properly discharged, and after discharge, the outside air can be properly infiltrated into the inner bag. The present invention provides a delamination container for high-viscosity products that can be suppressed to a low level.

According to the present invention, the container body is provided with a container main body that contains a high-viscosity product having a viscosity at 20 ° C. of 100 mPa · s or more, and a cap that is attached to the mouth of the container main body. And an inner bag, and the inner bag peels off from the outer shell and shrinks as the contents are reduced, and the cap includes a cylindrical portion and a valve portion disposed in the cylindrical portion. The valve portion includes a pedestal portion that protrudes toward the inside of the container body, and a connecting portion that connects the pedestal portion and the tubular portion, and the pedestal portion is provided with a cross slit-shaped discharge port. The connecting portion includes a bent portion that protrudes toward the outside of the container body, and the pedestal portion is pushed by the high-viscosity material when pressure is applied to the container body. By pushing toward the outside of the container body. When the discharge port is opened and the pressure on the container body is removed, the state returns to the state of projecting toward the inside of the container body, the discharge port is closed, and the outside air into the inner bag There is provided a delamination container for high-viscosity materials, which is configured to suppress intrusion of water.

As a result of experiments by the present inventors, when a valve portion provided on the cap having a pedestal portion and a connecting portion having the specific structure described above is employed, the viscosity at 20 ° C. is 100 mPa · s or more. It has been found that even a high-viscosity product can be easily discharged, does not cause dripping after discharge, and can appropriately suppress the intrusion of outside air into the inner bag. Completed. In addition, it has been found that the valve portion configured as described above suppresses the intrusion of outside air when the content is a high-viscosity material, but does not exhibit such a function when the content is a low-viscosity material. .

It is sectional drawing which shows the structure of the lamination peeling container 1 of one Embodiment of this invention. FIG. 2 is a cross-sectional view illustrating a state in which a lid portion 60 is removed from FIG. 1 and a cap 51 is separated from a container body 3. It is sectional drawing which shows the structure of the inner layer 13 in FIG. (A) is an enlarged view of the periphery of the cap 51 of the delamination container 1 with the lid 60 removed from FIG. 1 and turned upside down, and shows a state where no pressure is applied to the container body 3. (B) is the figure which looked at the valve part 53 in (a) from the bottom. FIGS. 4A and 4B correspond to FIGS. 4A and 4B and show a state in which pressure is applied to the container body 3.

Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. The invention is established independently for each feature.

As shown in FIGS. 1 and 2, the laminated release container 1 for a high viscosity material according to an embodiment of the present invention includes a container body 3, a valve member 5, and a cap 51.
The container body 3 includes a storage portion 7 that stores the contents, and a mouth portion 9 that discharges the contents from the storage portion 7. In the present embodiment, the content is a high-viscosity product having a viscosity at 20 ° C. of 100 mPa · s or more. Examples of the high viscosity material include ketchup, mayonnaise, and honey. The viscosity at 20 ° C. of the high viscosity product is preferably 500 mPa · s or more, more preferably 1000 mPa · s or more, and further preferably 5000 mPa · s or more. The upper limit of the viscosity at 20 ° C. of the high-viscosity product is not particularly defined, but is, for example, 10,000, 50000, or 100,000 mPa · s.

The container body 3 includes an outer layer 11 and an inner layer 13 in the housing portion 7 and the mouth portion 9, an outer shell 12 is constituted by the outer layer 11, and an inner bag 14 is constituted by the inner layer 13. As the content decreases, the inner layer 13 peels from the outer layer 11, whereby the inner bag 14 peels from the outer shell 12 and contracts.

The cap 51 includes a cylindrical portion 52, a lid portion 60, a valve portion 53, and a valve fixing member 54. The lid part 60 is connected to the cylinder part 52 at the hinge part 61, and the lid part 60 can be opened and closed by rotating the lid part 60 relative to the cylinder part 52 around the hinge part 61. Yes. The valve portion 53 has an outer peripheral portion 53 a sandwiched between the valve fixing member 54 and the cylindrical portion 52, and the valve portion 53 is fixed to the cylindrical portion 52 by fixing the valve fixing member 54 to the cylindrical portion 52. Is done.

As shown in FIG. 3, the mouth portion 9 is provided with a male screw portion 9d, and the cylindrical portion 52 is provided with a female screw portion 52a. The cap 51 can be attached to the container body 3 by screwing the female screw portion 52a and the male screw portion 9d.

The accommodating portion 7 is provided with a valve member 5 that adjusts the flow of air between the intermediate space 21 between the outer shell 12 and the inner bag 14 and the outer space S of the container body 3. The outer shell 12 is provided with an outside air introduction hole 15 that communicates the intermediate space 21 and the outer space S in the housing portion 7. The outside air introduction hole 15 is a through hole provided only in the outer shell 12 and does not reach the inner bag 14. The valve member 5 is inserted in the outside air introduction hole 15 and is slidable with respect to the outside air introduction hole 15. The valve member 5 is provided on the intermediate space 21 side of the shaft part 5a and has a larger sectional area than the shaft part 5a. A seal portion 5c and a locking portion 5b provided on the outer space S side of the shaft portion 5a and preventing the valve member 5 from entering the intermediate space 21 are provided.

The seal portion 5c is configured to substantially close the outside air introduction hole 15 when the outer shell 12 is compressed, and has a shape in which a cross-sectional area decreases as the shaft portion 5a is approached. Moreover, the latching | locking part 5b is comprised so that air can be introduce | transduced into the intermediate | middle space 21 when decompress | restoring after the outer shell 12 is compressed. When the outer shell 12 is compressed, the pressure in the intermediate space 21 becomes higher than the external pressure, and the air in the intermediate space 21 leaks out from the outside air introduction hole 15. Due to the pressure difference and the air flow, the seal portion 5 c moves toward the outside air introduction hole 15, and the seal portion 5 c closes the outside air introduction hole 15. Since the cross-sectional area becomes smaller as the seal portion 5c approaches the shaft portion 5a, the seal portion 5c easily fits in the outside air introduction hole 15 and closes the outside air introduction hole 15.

When the outer shell 12 is further compressed in this state, the pressure in the intermediate space 21 is increased. As a result, the inner bag 14 is compressed and the contents in the inner bag 14 are discharged. Further, when the compressive force applied to the outer shell 12 is released, the outer shell 12 tries to recover by its own elasticity. At this time, the seal portion 5 c moves away from the outside air introduction hole 15, the block of the outside air introduction hole 15 is released, and outside air is introduced into the intermediate space 21. Further, a groove 5 d is provided on the surface of the locking portion 5 b that contacts the outer shell 12 so that the locking portion 5 b does not block the outside air introduction hole 15.

The valve member 5 can be mounted on the container body 3 by inserting the seal portion 5c into the intermediate space 21 while the seal portion 5c expands the outside air introduction hole 15. Therefore, it is preferable that the tip of the seal portion 5c has a tapered shape. Since such a valve member 5 can be mounted simply by pushing the seal portion 5c into the intermediate space 21 from the outside of the container body 3, it is excellent in productivity. The external air introduction hole 15 is closed when the pressure in the intermediate space 21 is equal to or higher than the external pressure, and the external air introduction hole is reduced when the pressure in the intermediate space 21 becomes lower than the external pressure. The structure provided with the non-return valve which open | releases 15 and introduces air into the intermediate | middle space 21 from the outside may be sufficient.

Next, the layer structure of the container body 3 will be described in more detail. The container body 3 includes an outer layer 11 and an inner layer 13. The outer layer 11 is formed to be thicker than the inner layer 13 so that the restoring property is high.

The outer layer 11 is composed of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof.

As shown in FIG. 3, the inner layer 13 is provided between the EVOH layer 13a provided on the outer surface side of the container, the inner surface layer 13b provided on the inner surface side of the EVOH layer 13a, and between the EVOH layer 13a and the inner surface layer 13b. The adhesive layer 13c is provided. By providing the EVOH layer 13a, the gas barrier property and the peelability from the outer layer 11 can be improved. The EVOH layer 13a is a layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin, and is obtained by hydrolysis of ethylene and vinyl acetate copolymer.

The inner surface layer 13b is a layer that comes into contact with the contents of the delamination container 1, and is, for example, a polyolefin such as low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof. It is preferably made of low-density polyethylene or linear low-density polyethylene.

The adhesive layer 13c is a layer having a function of adhering the EVOH layer 13a and the inner surface layer 13b. For example, an acid-modified polyolefin having a carboxyl group introduced into the above-described polyolefin (eg, maleic anhydride-modified polyethylene) is added. And ethylene vinyl acetate copolymer (EVA). An example of the adhesive layer 13c is a mixture of low-density polyethylene or linear low-density polyethylene and acid-modified polyethylene.

Next, the configuration of the valve unit 53 will be described in more detail. The valve portion 53 includes a pedestal portion 55 that protrudes toward the inside of the container main body 3 and a connecting portion 56 that connects the pedestal portion 55 and the cylindrical portion 52 in a state where the cap 51 is attached to the container main body 3. The pedestal portion 55 includes a flat portion 55a in which the discharge port 57 is provided. The connecting portion 56 includes a bent portion 56 a that protrudes toward the outside of the container body 3. The valve portion 53 is formed of a flexible material such as silicone rubber.

As shown in FIG. 4B, the discharge port 57 is formed by slits 58a and 58b (cross slits) formed so as to intersect (preferably orthogonally) the flat portion 55a. Four flaps 57a to 57d are formed by the slits 58a and 58b.

FIG. 4 shows a state in which no pressure is applied to the container body 3. In this state, the flaps 57a to 57d are in close contact with each other, and the contents in the container body 3 do not leak easily. On the other hand, when the container body 3 is compressed by applying pressure to the container body 3, the flat portion 55 a is pushed by the contents in the container body 3, so that the pedestal portion 55 is outside the container body 3 as shown in FIG. 5. And the discharge port 57 is opened. Specifically, as shown in FIG. 5, the flaps 57a to 57d are separated from each other by being bent toward the outside of the container body 3, and an opening 57e is formed at the center of the flaps 57a to 57d. And the contents in the container main body 3 are discharged through the opening 57e.

When the pressure on the container body 3 is removed, the valve portion 53 returns to a state of projecting toward the inside of the container body 3 as shown in FIG. 4 due to its restoring force, and the flaps 57a to 57d are brought into close contact with each other again. Thus, the discharge port 57 is closed. At this time, since the discharge port 57 is closed while the position of the discharge port 57 moves toward the inside of the container body 3, liquid dripping hardly occurs.

After the discharge port 57 was closed after the contents of the container body 3 were discharged, an experiment was conducted to determine whether outside air would enter the inner bag 14 through the discharge port 57. When the viscosity was 1 mPa · s at 20 ° C., outside air entered the inner bag 14. On the other hand, when the contents are ketchup (viscosity is about 1000 mPa · s at 20 ° C.) or honey (viscosity is about 8000 mPa · s at 20 ° C.), outside air does not enter the inner bag 14. It was. Thus, it has been found that the delamination container of the present invention can effectively suppress the intrusion of outside air after the contents are discharged only when a highly viscous material is accommodated.

1: Laminated peeling container for high viscosity material, 3: Container body, 5: Valve member, 7: Storage part, 9: Mouth part, 11: Outer layer, 12: Outer shell, 13: Inner layer, 14: Inner bag, 15: Outside air introduction hole, 51: cap, 53: valve part

Claims (1)

A container body containing a highly viscous material having a viscosity at 20 ° C. of 100 mPa · s or more, and a cap attached to the mouth of the container body,
The container body is a laminated peeling container including an outer shell and an inner bag, and the inner bag is peeled off and contracted from the outer shell as the content decreases.
The cap includes a tubular portion and a valve portion disposed in the tubular portion,
The valve portion includes a pedestal portion that protrudes toward the inside of the container body, and a connecting portion that connects the pedestal portion and the cylindrical portion,
The pedestal part includes a flat part provided with a cross-slit discharge port,
The connecting portion includes a bent portion that protrudes toward the outside of the container body,
When the pressure is applied to the container main body, the pedestal is pushed toward the outside of the container main body by being pushed by the high-viscosity material, the discharge port is opened, and the container main body is opened. A high-viscosity product configured to return to a state of projecting toward the inside of the container main body when the pressure is removed and the discharge port is closed to prevent intrusion of outside air into the inner bag Laminated peeling container.

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