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.
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[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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