JPS5916304Y2 - packaging - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a package characterized in that a composition that absorbs carbon dioxide gas well is housed in the package, and a composite layer containing the composition is used as a container material.

The term "container material" as used herein refers to a bag or a container body such as a cup-shaped container.

Foods such as coffee, natural cheese, and miso made with koji produce carbon dioxide gas outside the food due to respiration and fermentation of the contents.

For this reason, even if these contents are stored using a film or container with good barrier properties, carbon dioxide gas is generated during storage, and the internal volume increases, resulting in a very swollen state, and in the worst case, the bag or container may break. This caused problems with the shelf life of the contents and made it extremely difficult to view.

For this reason, the inventor of the present invention has investigated various ways to eliminate these drawbacks and obtain a package for food that generates carbon dioxide that has a good presentation and improved shelf life, and as a result, the present inventor has created the package of the present invention. Ta.

The package of the present invention is a package containing a thermoplastic resin composition 1 blended with calcium hydroxide Ca(OH)2, which can absorb carbon dioxide gas generated from foods using koji such as coffee, natural cheese, and miso. This is a package characterized by being housed in a body 2 and using the composition as one layer of a container material 4 forming a bag or container.

Thermoplastic resins blended with calcium hydroxide include polypropylene (PP), polyethylene (PE),
Examples include olefin resins such as EVA, PVC, ABS, styrene resins, ionomer resins, nylon (Ny), polycarbonate (PC) resins, etc. Calcium hydroxide is finely powdered with a particle size of 500μ or less. It may be added in an amount of 500 parts or less per 100 parts of the thermoplastic resin.

As the container material of the present invention, a composite layer with good barrier properties having a barrier layer of PVDC, saponified EVA, etc. as an intermediate layer is used.

Next, one embodiment of the package of the present invention will be described.

Container material 4 includes surface layer Ny (10μ)/saponified EVA (10μ)/adhesive layer/ionomer 50% by weight and C.
a(OH) 250% by weight blend composition (100μ)/
A bag is formed using a film consisting of a four-layer composite layer consisting of a PE (27μ) sealing layer, 3.100 g of cutlet cheese is filled into the storage chamber, and a low-density PE (PE)
1 g of a sheet made of a blend composition of 35% by weight and 265% by weight of Ca (OH) was housed, and N2 gas was sealed using a gas exchanger to obtain an N2 gas exchanged sealed package.

This package was stored indoors at 20° C. for one month, but maintained its normal shape without swelling.

In this way, Ca (OH) 2 has the effect of absorbing carbon dioxide gas.
A blended thermoplastic resin is used as one of the intermediate layers of the composite layer to shape the container body, and Composition 1, which is a thermoplastic resin such as PE blended with calcium hydroxide, which has the effect of absorbing carbon dioxide, is used to make coffee. By storing the contents 3 such as cheese in the package 2, the carbon dioxide gas generated from the contents is absorbed. The body would become extremely swollen, making it difficult to see, and in the worst case scenario, the bag would break.However, with the packaging of the present invention, this does not occur and the appearance is very good. It was possible to create a package with a long shelf life.

The package of the present invention includes not only bags but also cup containers and the like.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the package of the present invention.

Claims (1)

[Scope of utility model registration request] 1. A packaging body, characterized in that a composition capable of absorbing carbon dioxide gas, which is a blend of thermoplastic resin and calcium hydroxide, is housed in the packaging body, and a composite layer containing the composition is used as a container material.