JPH0665261U - Lid material - Google Patents

Abstract

(57) [Summary] [Purpose] The object is to be able to heat the container containing the items in the microwave while the lid is still attached, and to easily incinerate the used lid. [Structure] A lid material is characterized in that a silica vapor deposition layer is provided on a lower surface of a polyester film, and a heat seal layer is provided on a lower surface of the silica vapor deposition layer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lid material for a container containing liquid drinks such as juice, beer, sake, drinking water, pudding, jelly, and prepared foods.

[0002]

[Prior art]

 The conventional lid material has an aluminum foil bonded with an adhesive on the upper surface of a synthetic resin film such as polyethylene (PE) film, and the lower surface of the polyethylene film is ethylene-vinyl acetate copolymer (EVA) or ethylene-acrylic acid ester copolymer ( Those provided with a heat sealing layer such as EEA) are generally used.

[0003]

[Problems to be solved by the device]

 With this conventional lid material, the container containing the contents is sealed by heat sealing with the lid material, and aluminum foil is used as the lid material when the consumer buys the contents stored in the container at the store or eats or drinks. However, there was a problem that the contents stored in the container could not be heated in a microwave oven with confidence. It is desirable that the aluminum foil, which is a constituent material of the lid material, be recovered from the used lid material by peeling it off from the container and reused.However, since the aluminum foil is entirely adhered to the synthetic resin film. It was extremely difficult to remove the aluminum foil from the synthetic resin film, and there was the problem that the aluminum foil did not come off from the synthetic resin film even when immersed in water, and it was incinerated in an incinerator to dispose of the lid material. If it is disposed of, the synthetic resin film and the adhesive of the lid material are incinerated, but the aluminum foil is not incinerated and remains as aluminum lumps in the incinerator, so it has to be removed from the incinerator. It was

The present invention solves these problems of the conventional lid material, can be heated in the microwave without sparking even with the lid material attached, and can easily incinerate the used lid material. It is intended for such purposes.

[0005]

[Means for Solving the Problems]

 The lid material of this invention comprises a polyester (PET) film provided with a silica vapor deposition layer on the lower surface and a heat seal layer provided on the lower surface of the silica vapor deposition layer.

[0006]

[Action]

 When the upper opening of the container is sealed by heat sealing with the lid material, the lid material is composed of a silica vapor deposition layer or polyester film that has optical transparency. Therefore, consumers can visually check the contents of the container, and since aluminum foil is not used for the lid, the container with the lid is heated as it is in the microwave oven. In addition, since a silica vapor deposition layer with barrier properties is provided on the lid material, water vapor, water and oxygen from the lid material are prevented from entering the container during distribution and storage, and the lid material is used for storage. The fragrance retaining property of the product is maintained. The used lid is flammable and can be easily incinerated.

[0007]

【Example】

 Next, an embodiment of the lid material of the present invention will be described with reference to the drawings. Example 1 As shown in FIGS. 1 and 2, silica (SiOx, where x is 1.5) is deposited on the lower surface of a polyester (PET) film 1 to provide a silica deposition layer 2. A lid member 4 is provided with a heat-sealing layer 3 formed by applying molten ethylene-vinyl acetate copolymer (EVA) in a thin film form on the lower surface of the silica vapor deposition layer 2.

When using the lid member 4 of Example 1, as shown in FIG. 3, for example, an instant curry 7 which is a cooked food is put in a container 6, and the lid member 4 is placed in the upper opening of the container 6. Heat seal 5 with the heat seal layer 3 to seal the upper opening of the container 6. In the instant curry 7 in which the upper opening of the container 6 is sealed with the lid member 4, since the silica vapor deposition layer 2 of the lid member 4 has a barrier property, oxygen and water do not enter from the lid member 4. The container 6 which is kept in a good condition for a long time and is heat-sealed 5 with the lid member 4 is composed of the silica vapor deposition layer 2, the PET film 1 and the heat seal layer 3 which are optically transparent as the lid member 4. As a result, the consumer can visually confirm the instant curry 7 contained in the container 6 through the lid member 4 of the container 6. When eating the instant curry 7 contained in the container 6, the food and drink person can also visually confirm the instant curry 7 contained in the container 6 through the lid member 4. Next, the instant curry 7 in the container 6 with the lid member 4 is heated in a microwave oven. After heating, the lid material 4 is peeled off from the container 6 and the instant curry 7 heated is eaten and eaten. The used cover material 4 stripped from the container 6 is incinerated in an incinerator or the like because all the components are flammable. In the lid member 4 of Example 1, the silica of the silica vapor deposition layer 2 is SiOx and the x of SiOx is 1. 5 has been explained, but the result of the test shows that x is about 1.3 to about 1.8. In addition, in the lid member 4 of Example 1, the heat-sealing layer 3 in which EVA was applied in a thin film shape was provided on the lower surface of the silica vapor deposition layer 2, but an adhesive layer was provided on the lower surface of the silica vapor deposition layer. Alternatively, a heat-meltable synthetic resin film may be bonded and provided. In addition to EVA, polypropylene (PP), ethylene-acrylic acid ester copolymer (EEA), ethylene-acrylic acid copolymer (EAA), ionomer resin, amorphous polyethylene as the heat-melting synthetic resin constituting the heat-sealing layer. There are terephthalate (A-PET), vinyl chloride vinyl acetate heat seal lacquer, vinyl chloride acrylic heat seal lacquer, etc. As the film of the heat-meltable synthetic resin, those heat-meltable synthetic resins are formed into a film. There is.

Example 2 As shown in FIG. 4, silica (SiOx, where x is 1.6) is deposited on the lower surface of the polyester (PET) film 11 to form a silica deposition layer 12. A paper 13 was adhered to the lower surface of the vapor-deposited silica layer 12 with an adhesive agent 14, and a heat seal layer 15 formed by applying a molten ethylene-acrylic acid ester copolymer (EEA) in a thin film was provided on the lower surface of the paper 13. It is the lid member 16.

When the lid member 14 of the second embodiment is used, since the lid member 16 is provided with the paper 13, the lid member 16 is provided with a light-shielding property and the lid member 16 has a dead hold property. .

[0011]

[Effect of device]

 The lid material of this invention can easily seal the opening of the container by heat sealing with the lid material, and since the lid material does not use metal, the container with the contents sealed by the lid material can be directly used in the microwave oven. It can be heated and the lid material is provided with a vapor-deposited silica layer that has barrier properties, so it is possible to prevent water vapor, water, oxygen, etc. from entering the container from the lid material, and It is possible to prevent the good aroma, water, and nutrients in the container from escaping out of the container. Furthermore, since the used lid material is flammable, it can be easily incinerated.

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of the present invention with a part cut away.

FIG. 2 is an enlarged sectional view of FIG.

FIG. 2 is a cross-sectional view during use.

FIG. 4 is an enlarged sectional view of Embodiment 2 of the present invention product.

[Explanation of symbols] 1 polyester film 2 silica vapor deposition layer 3 heat seal layer 4 lid material 5 heat seal 6 container 7 instant curry 11 polyester film 12 silica vapor deposition layer 13 paper 14 adhesive 15 heat seal layer 16 lid material

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[Procedure amendment]

[Submission date] January 4, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of the present invention with a part cut away.

FIG. 2 is an enlarged sectional view of FIG.

FIG. 3 is a cross-sectional view during use.

FIG. 4 is an enlarged sectional view of Embodiment 2 of the present invention product.

[Explanation of symbols] 1 polyester film 2 silica vapor deposition layer 3 heat seal layer 4 lid material 5 heat seal 6 container 7 instant curry 11 polyester film 12 silica vapor deposition layer 13 paper 14 adhesive 15 heat seal layer 16 lid material

Claims (2)

[Scope of utility model registration request] 1. A lid material comprising a polyester vapor deposition layer provided on the lower surface of the polyester film and a heat seal layer provided on the lower surface of the silica vapor deposition layer. 2. The lid member according to claim 1, wherein a paper is interposed and adhered between the silica vapor deposition layer and the heat seal layer.