JP2000025826A - Inner seal material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To seal a container, and to completely remove the moisture or the odor which is originally present in the container by forming a pocket having vent holes in which a functional member for moisture absorption and deodorization is stored on a sealant layer forming surface of an aluminum membrane to be adhered to a packing base material through a temporary adhesive. SOLUTION: A pocket 8 having vent holes 7 in which a functional member 6 for moisture absorption and deodorization is stored on a forming surface of a sealant layer 4 of an aluminum membrane 3 to be adhered to a packing base material 2 through a temporary adhesive 5 such as wax, polypropylene, and polyethylene to form an inner seal material 1. The content is sealed by a cap 10 of a container, and the functional member 6 to be stored in the pocket 8 can be stored in the container, and thus, the inside of the container can be kept under the function of the functional member 6 to be stored in the pocket 8 while the cap 10 is removed, and an aluminum membrane 3 left on a mouth end of the container is peeled and removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner container having a sealing function at the mouth end of a container containing powdered or solid matter such as instant coffee, milk powder, cocoa, etc., and a function of moisture and deodorization in the sealed container. It relates to a sealing material.

[0002]

2. Description of the Related Art Generally, an inner seal material is formed by laminating a sealant layer on an outer surface of an aluminum membrane adhered to a packing base material through a temporary adhesive such as wax, polypropylene, polyethylene, etc. The cap is mounted and used on the inner bottom surface of the cap, with the periphery thereof being locked by a rib provided at the back of the side wall of the cap.

[0003] Then, the cap is screwed into a mouth portion of a container filled with contents such as instant coffee or the like in a predetermined manner, and an electromagnetic wave is applied from the outer surface of the cap by an induction heating device using electromagnetic waves to produce the aluminum. When the membrane is heated, the heat melts the sealant layer and adheres to the mouth end of the container to seal.

As described above, the inner seal material seals the contents in the cap of the container, passes through the distribution process, reaches the consumer's hand, and when the consumer removes the cap, the aluminum membrane is attached to the mouth end of the container. The seal remains completely sealed until the remaining aluminum membrane is broken.

[0005] However, the inner seal material cannot remove moisture, odor and other substances originally trapped in the container even if the aluminum membrane can almost completely prevent the invasion of moisture from outside the container. It was necessary to load a desiccant such as silica gel, a deodorant such as activated carbon, a bag of other chemicals, or a solid cubic package in the container together with the contents.

[0006]

However, the filling work of bagging materials such as desiccants and deodorants and solids in the container is not only complicated, but may be mistaken for contents depending on the form. There was a problem that it would be a hindrance to taking out the contents.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides an inner seal material capable of sealing contents such as instant coffee and absorbing and deodorizing the inside of a container. It is an object.

[0008]

In order to achieve the above-mentioned object, the present invention provides a packing base material, the other side of which has a sealant layer formed on one side, bonded to the other side of the aluminum membrane via a temporary adhesive, On the sealant layer forming surface of the aluminum membrane, a pocket with a ventilation hole containing a functional member such as a moisture absorbing / deodorizing function is formed, and the inner seal material is simply applied to a container loaded with contents. It is configured so that it is sealed and almost completely removes moisture absorption and odor that originally exist in the container.

Further, the invention according to claim 2 is characterized in that the packing base material is a foamed sheet of a polyolefin resin, the cap is removed, and a functional member having a moisture absorbing / deodorizing function together with the aluminum membrane is provided. It is configured to improve the sealing property, moisture-proof property, packing property, and resealing property when opening and closing of the cap are repeatedly performed after removing the container opening.

Further, the invention according to claim 3 is characterized in that the pocket with the vent hole is formed by molding a polyolefin resin sheet into an inverted hat shape, and the flange portion is heat-welded to the sealant layer forming surface of the aluminum membrane. It is configured so that necessary functional members can be accommodated depending on the contents.

[0011]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. 1 is an enlarged sectional view showing one embodiment of the inner seal material of the present application, FIG. 2 is a sectional view showing an applied state of the inner seal material of the present application, and FIG. 3 is a sectional view showing the operation of the inner seal material of the present application.

The inner seal material 1 of the present invention bonds a packing base material 2 and an aluminum membrane 3 having a sealant layer 4 on one surface thereof through a temporary adhesive material 5 such as wax, polypropylene, or polyethylene. On the surface of the aluminum membrane 3 where the sealant layer 4 is formed, a pocket 8 with a vent hole 7 for accommodating a functional member 6 having a function of absorbing and deodorizing moisture is formed.

The inner sealing material 1 of the present invention is shown in FIG.
As shown in (a), a state in which the pocket 8 is engaged with a rib 11 provided on the inner bottom surface of the cap 10 of the container 9 so that the pocket 8 is located on the container 9 side, is provided on the inner wall of the cap 10. Loaded with.

Thereafter, the cap 10 is screwed into the mouth of the container 9 previously filled with the contents 12, so that the cap 1
Electromagnetic waves are applied from the outer surface of the aluminum membrane 3 by an induction heating device (not shown) using electromagnetic waves to reduce the aluminum membrane 3 by about 1 mm.
When induction heating is performed at about 10 ° C., the heat causes the sealant layer 4 to melt and adhere to the mouth end of the container 9.

Accordingly, the inner seal material 1 of the present invention is
At the same time as the contents 12 are sealed in the cap 10 of the container 9, the functional member 6 accommodated in the pocket 8 is accommodated in the container 9. In this state, the contents 12
Extends to consumers through the distribution process.

[0016] Then, as shown in FIG.
When the cap 10 is removed, the aluminum membrane 3 is adhered to the mouth end of the container 9, so that the packing base material 2 is separated from the temporary adhesive 5 and provided on the rib 11 provided at the back of the side wall of the cap 10. It remains in the locked state.

Thus, the functional member 6 housed in the pocket 8 adhered to the inner surface of the aluminum membrane 3 remaining at the mouth end of the container 9 until the functional member 6 is peeled off and removed as shown in FIG. Meanwhile, the inside of the container 9 is kept under the function of the functional member 6. That is, if the functional member 6 has a moisture absorbing function, it is kept in a dry state, and if the functional member 6 has a deodorizing function, it is kept in an odorless state.
If it has a deoxygenation function, it seems to be kept in a deoxygenated state.

The packing base material 2 held on the inner bottom surface of the cap 10 functions as a packing material at the time of resealing after removing the aluminum membrane 3 from the opening of the container 9 as shown in FIG. It will be.

The material of the packing substrate 2 is not particularly limited, but may be formed of a polyolefin resin foam sheet. That is, the foamed resin sheet has the advantage of not only preventing the transfer of the base material such as paper powder, but also improving the sealing performance when functioning as a packing material at the time of resealing as described above.

The foaming sheet constituting the packing base material 2 has a foaming ratio of 1.2 to 30 times, preferably 1.5 to 15 times, and the thickness A depends on the diameter of the container 10. , 500 to 1200 μm, preferably about 700 μm in terms of its function.

The foamed sheet constituting the packing substrate 2 has a melting point higher than the melting point of the sealant layer 4 (about 90 ° C.), specifically, polyethylene, polypropylene, polybutene, polyester alone or any of these. Are preferred. Of course, other compositions may be used as long as the above temperature conditions are satisfied.

The pocket 8 is formed by molding a polyolefin-based resin sheet (composite sheet obtained by laminating polyethylene and polypropylene) into an inverted hat shape having a vent hole 7 provided on the top surface, and forming a flange 8 ′ on the aluminum membrane 3. Is thermally welded to the surface on which the sealant layer 4 is formed.

That is, it goes without saying that the flange 8 'of the pocket 8 is formed so that the polyethylene side serves as an adhesive surface with the aluminum membrane. The adhesive force between the flange 8 'of the pocket 8 and the aluminum membrane is such that it does not weaken when the electromagnetic wave is applied by the electromagnetic wave induction heating device to heat the aluminum membrane 3 and melt the sealant layer 4. It is fixed.

The functional member 6 may be formed of a sheet in which a desiccant (eg, silica gel, activated alumina, alumina, etc.) is dispersed and encapsulated in a polyolefin resin. Since the polyolefin resin has a low moisture permeability, the moisture absorption speed is slow and a long-term drying effect can be expected. This is because the polyolefin-based resin is harmless even when the contents are directly touched, and is excellent in hygiene.

The functional member 6 is not limited to a plate-like member, but may be a granular member if the shape of the ventilation hole 7 of the pocket 8 is devised. Further, a powdery material may be wrapped in a paper or a nonwoven fabric having good air permeability. Furthermore, the functional member 6 may be a deodorant (eg, activated carbon), deoxygenated (eg, iron powder), or may be a substance that can inject a scent into the contents.

The functional member 6 may be mounted in a pocket 8 formed in a direct seal without the packing base material 2. The direct seal may be provided with a tab on the periphery.

Although not shown in the above embodiment, the outer surface of the aluminum membrane 3 (temporary attachment surface to the packing base material 2) or the outer surface of the aluminum membrane 3 for retaining strength is preliminarily secured. Appropriate characters and pictures may be printed on the sheet material. For this printing, an anchor coat layer may be provided on the outer surface of the aluminum membrane 3 or the outer surface of the sheet material.

[0028]

As described above, according to the present invention, the other side of the aluminum membrane having a sealant layer formed on one side thereof is adhered to a packing base material through a temporary adhesive to form a sealant layer of the aluminum membrane. On the surface, it is characterized by forming a pocket with a vent that contains functional members such as moisture absorption and deodorization functions, so that sealing is achieved by simply applying the inner seal material to the container loaded with the contents, and It has an excellent effect that the originally existing moisture absorption and odor can be almost completely removed.

Further, the invention according to claim 2 is characterized in that the packing substrate is a foamed sheet of a polyolefin resin, so that the cap is removed and functions such as a moisture absorbing / deodorizing function together with the aluminum membrane are provided. This provides an excellent effect of improving the sealing property, moisture-proof property, packing property, and resealing property when the cap is repeatedly opened and closed after removing the conductive member.

Further, in the invention according to a third aspect, the pocket with the ventilation hole is formed by molding a polyolefin resin sheet into an inverted hat shape and heat-welding the flange portion to the sealant layer forming surface of the aluminum membrane. Therefore, one or more kinds of functional members having necessary functions depending on the contents can be arbitrarily accommodated.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing one embodiment of an inner seal material of the present application.

FIGS. 2A and 2B are cross-sectional views showing an application state of the inner seal material of the present application, wherein FIG. 2A shows a state at the time of capping, and FIG.

FIG. 3 is a sectional view showing the operation of the inner seal material of the present invention,
(A) is when the functional member is removed together with the aluminum membrane, and (b) is when the cap is resealed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner seal material 2 Packing base material 3 Aluminum membrane 4 Sealant layer 5 Temporary adhesive 6 Functional member 7 Vent 8 Pocket 8 'Flange 9 Container 10 Cap 11 Rib 12 Contents

Claims (3)

[Claims] 1. The other side of an aluminum membrane having a sealant layer formed on one side thereof is adhered to a packing substrate via a temporary adhesive, and a moisture absorbing / deodorizing function or the like is provided on the sealant layer forming side of the aluminum membrane. An inner sealing material characterized by forming a pocket with a ventilation hole accommodating the functional member of (1). 2. The inner sealing material according to claim 1, wherein the packing base material is a polyolefin resin foam sheet. 3. The air pocket with a vent formed by molding a polyolefin resin sheet into an inverted hat shape and heat-sealing a flange portion thereof to a sealant layer forming surface of an aluminum membrane. The inner seal material according to the above.