this article analyses test duration of gas permeability test and concludes that system purge time should be included into test duration. At the same time, this article introduces the factors affecting transmitting equilibrium. Continue reading
Barrier property is one of the key parameters affecting shelf life of products, but traditional test methods for water vapor permeability still fall short not only in testing efficiency but also in terms of operation convenience. For that reason, a method that can rapidly determine water vapor permeability of package is introduced in this article. Continue reading
This article introduces the influences of humidity on gas barrier property of materials as well as the methods to control humidity. Continue reading
The paper introduces the definitions, application scope as well as the difference and conversion relationship of 3 permeability parameters (gas transmission rate, permeance and permeability coefficient). Furthermore, it also explains the unclear situations in the international and national standards. Continue reading
This article will explain the relation between differential pressure and barrier properties based on actual testing data. Continue reading