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Method for testing oxygen transmission rate of package bag

A technology of oxygen permeability and packaging bag, which is applied in the field of testing the oxygen permeability of packaging bags, can solve the problems of increasing the economic burden of enterprises and high equipment prices, and achieves the effect of objective and reliable results, low difficulty and saving mechanical equipment.

Inactive Publication Date: 2009-12-09
GUANGDONG GUANGYI TECH IND
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  • Description
  • Claims
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Problems solved by technology

However, it is necessary to use professional testing instruments to detect the oxygen permeability of the film, but the price of the equipment is high, which will increase the economic burden of the enterprise and is an unacceptable investment for ordinary manufacturers.

Method used

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  • Method for testing oxygen transmission rate of package bag

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Embodiment Construction

[0013] The present invention is a method for testing the oxygen permeability rate of packaging bags. Three kinds of packaging materials with different oxygen permeability rates, KOP / PE, PET / CPP, and OPP / CPP, are selected and marked with A, B, and C respectively. The properties of the three materials are as follows:

[0014] Mark A: KOP / PE 20ml / m 2 ·24h·atm low oxygen permeability

[0015] Mark B: PET / CPP 60~80ml / m 2 ·24h·atm medium oxygen permeability

[0016] Mark C: OPP / CPP 1400ml / m 2 ·24h·atm high oxygen permeability

[0017] The second step is to cut A, B, C and the packaging materials to be tested into an area of ​​22cm*17cm, seal them on three sides to make a bag, put in the same specification of Guangyi brand deoxidizer, and squeeze it by hand as much as possible Press to drain the air in the bag, seal it with a sealing machine, the sum of the inner area of ​​the sealing edge is: 15cm*10cm*2 sides = 300cm 2 , three parallel experiments were done for each material. ...

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Abstract

The invention relates to a test method, in particular to a method for testing the oxygen permeability of a packaging bag. In the present invention, the packaging material to be tested and several packaging materials with known oxygen permeability are cut into the same size, each of which is sealed with the same brand deoxidizer of the same specification, fixed at the bottom of the container and placed upside down in the container containing the solution, adjusted and made At the beginning of the test, the value of the liquid level scale at the top is consistent. After a certain period of time, compare the packaging material to be tested with other known packaging material detection devices, that is, the liquid level in the container, so as to qualitatively judge the oxygen permeability of the packaging material to be tested. . The present invention can detect the oxygen permeability rate of the packaging material without resorting to complex and expensive precision instruments, and the test operation is simple and difficult, and the result is objective and reliable, which saves investment in machinery equipment and sites for enterprises, reduces economic burden, and has good advantages. Promote prospects.

Description

Technical field: [0001] The invention relates to a test method, in particular to a method for testing the oxygen permeability of a packaging bag. technical background: [0002] At present, the food industry widely uses plastic film to seal vacuum-packed food to prevent food from deteriorating. The main function of vacuum packaging is to remove oxygen in the packaging bag to help prevent food from deteriorating. The principle is relatively simple. Food spoilage is mainly caused by the activities of microorganisms, and most microorganisms need oxygen to survive. Vacuum packaging uses this principle to remove the oxygen in the packaging bag, so that microorganisms lose their "living environment". In addition to inhibiting the growth and reproduction of microorganisms, vacuum deoxygenation has another important function to prevent food oxidation. Because oily foods contain a large amount of unsaturated fatty acids, they are oxidized by oxygen, causing food to change color, taste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/10
Inventor 梁嘉臻
Owner GUANGDONG GUANGYI TECH IND
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