JPH04201878A - Food-containing bag of plastic film - Google Patents

Abstract

PURPOSE:To keep the contents fresh and the package in shape and improve the packaging in efficiency, display effect, and the like by using a hermetically sealable bag of plastic film and a chemical product therein, the chemical agent being used, after removal of air from said bag, to function to absorb oxygen and produce carbon dioxide. CONSTITUTION:A hermetically sealable bag 1 of a transparent plastic film, such as polyethylene or polypropylene, is evacuated of air and filled with food 2, such as potato chips, rice or wheat, together with a chemical agent which is capable of absorbing oxygen and producing carbon dioxide. For the chemical agent 3 a deoxidant of the carbon dioxide-producing type is used; this deoxidant absorbs oxygen contained in the contents, etc., and produces carbon dioxide, which, by being adsorbed on grain, such as rice or wheat, prevents such food from deterioration and also functions to keep the container in shape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a food storage bag made of plastic film suitable for storing confectionery such as potato chips or grains such as rice and wheat.

[Prior Art] Conventionally, as a bag for storing confectionery such as potato chips, a sealed bag made of plastic film is filled with nitrogen gas together with the confectionery.

It can also be used as a bag to store grains such as rice and wheat.

It is known that the interior of a sealed plastic bag is replaced with carbon dioxide gas and then filled with the above-mentioned grains.

In the former case, the presence of nitrogen gas prevents the confectionery inside the bag from oxidizing, and also allows the bag to maintain its shape, which can be expected to have the effect of preventing potato chips and the like from cracking.

On the other hand, in the latter case, since the carbon dioxide gas inside the bag is adsorbed by the grain, it can be expected to have the effect of preventing changes in the quality of the grain, especially oxidation deterioration and mold growth.

[Problem to be solved by the invention]

However, the former type of bag filled with nitrogen gas must be filled with a sufficient amount of nitrogen gas together with the food stored inside the bag in advance to inflate the bag, which is a small amount compared to the size of the bag. There was a problem in that the bag could only store a certain amount of potato chips, and as a result, the storage efficiency and display efficiency of the bag were extremely poor.

Further, the filling operation with nitrogen gas requires a certain amount of equipment and is time-consuming, which is a factor contributing to the high cost of the product.

In reality, it is not possible to reduce the amount of potato chips in the bag so much that cracks will occur, so in order to cover them, the surface of the bag is printed so that they cannot be seen through, making them more noticeable. Measures are being taken to prevent this.

On the other hand, like the former nitrogen gas method, the latter method, which replaces carbon dioxide gas, not only requires equipment and labor and has the problem of affecting product costs, but also has the problem that carbon dioxide gas is adsorbed by grains. Since the packaging is in a reduced pressure state, if the airtightness inside the bag is insufficient, outside air will not be introduced, which may cause the grain to deteriorate.

Further, even if the airtightness inside the bag is sufficient, there is a problem in that the bag body is not sufficiently tensioned, resulting in significant external deformation, resulting in poor appearance.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and has both the function of preserving the freshness of the contents and the function of preserving the shape of the bag, as well as improving the storage efficiency and display efficiency of the bag. also aims to provide superior plastic film food storage bags.

[Means for Solving the Problems] In order to achieve the above object, the food storage bag made of plastic film of the present invention evacuates the inside of the sealed bag body made of plastic film, absorbs oxygen, and absorbs oxygen. It is characterized by being filled with a drug that has the ability to generate carbon dioxide gas.

[Effect]

The inside of the sealed bag made of plastic film that contains contents such as potato chips and grains is degassed to improve the shelf life of the contents. The carbon dioxide gas-generating oxygen scavenger absorbs oxygen contained in the contents and generates carbon dioxide.Therefore, foods such as potato chips as contents will not be adversely affected by oxygen. By preventing this, freshness is maintained.

On the other hand, grains such as rice and wheat are prevented from deteriorating and forming mold by adsorbing carbon dioxide gas.

Furthermore, since the carbon dioxide gas functions as a shape retainer for the sealed bag, deformation such as denting of the bag can be prevented, and potato chips and the like can be prevented from cracking.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In FIG. 1 showing a food storage bag made of plastic film according to the present invention, reference numeral 1 denotes a sealed bag made of a transparent plastic film such as polyethylene or polypropylene, and the inside thereof is deaerated.

2 is potato chips, which is a stored item filled in the bag 1;
Foods such as rice, wheat, etc., and 3 each indicate a drug having oxygen absorption and carbon dioxide gas generation functions filled together with the food 2.

As the chemical 3, a carbon dioxide gas generating type oxygen absorber is used, and this carbon dioxide gas generating type oxygen absorber absorbs oxygen contained in the contents etc. and generates carbon dioxide gas, and this carbon dioxide gas is It is adsorbed to grains such as wheat and prevents their deterioration, and also functions as a shape preservation agent for containers.

As the above-mentioned carbon dioxide gas generating type oxygen scavenger, the following ones are applicable.

(1) Metals such as iron or their lower oxides, ferrous salts such as ferrous sulfate, sulfites, reducing sugars such as ascorbic acid, catechol, butylhydroxyanisole, glucose, etc. The main ingredient is a reducing substance, to which the necessary reaction accelerator and alkali or alkaline earth metal carbonate or hydrogen carbonate are added.

(2) Consisting of ascorbate, alkali, and the necessary reaction catalyst.

(3) A mixture of a known oxygen scavenger and a gas-adsorbing material such as zeolite that adsorbs carbon dioxide gas.

In this example, Ageless (manufactured by Mitsubishi Gas Chemical Co., Ltd.) and Vitalon GMF (manufactured by Toagosei Chemical Industry Co., Ltd.) were used.

〔Effect of the invention〕

Since the present invention is configured as described above, the drug filled inside the bag absorbs oxygen and generates carbon dioxide gas, and functions as a shape preservation agent, so that the contents of potato chips, etc. Even though the inside of the bag is deaerated in order to improve the shelf life of items, the bag does not become dented or otherwise deformed.
It is possible to maintain the original shape of the contents, prevent cracking of the contents, etc., and increase the commercial value.In addition, the above-mentioned agent absorbs oxygen contained in the contents, etc., and removes carbon dioxide gas from the rice. By being adsorbed to the outer surface of wheat, etc., the freshness of the contents can be maintained for a longer period of time.

Furthermore, since a sufficient amount of food can be filled in the bag relative to its size, the storage efficiency and display efficiency of the bag are extremely high.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a food storage bag made of plastic film according to the present invention. Main symbols in the diagram 1...Bag Body 2...Food 3...Drug

Claims (1)

[Claims] A food storage bag made of plastic film, characterized in that the inside of the sealed bag body made of plastic film is deaerated, and is filled with a chemical that absorbs oxygen and has the function of generating carbon dioxide gas.