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Method of measuring gas transmission hate of plastic film and measuring apparatus and computer program product used therefor
Method of measuring gas transmission hate of plastic film and measuring apparatus and computer program product used therefor
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机译:塑料薄膜的气体透过性的测定方法及其测定装置和计算机程序产品
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摘要
A gas X is sealed into a test film bag, which is obtained by processing a test plastic film into a bag, and has a known mass and surface area. The mass of the test film bag in which the gas is sealed is measured by an electronic balance a plurality of numbers of times on the time series while the temperature is kept constant in a constant temperature vessel which is filled with a gas Y different from the gas X so as to make the pressure in the vessel equal to the internal pressure of the test film bag. A transmission rate associated with the gas X is then computed from the relationship between the measurement results, the mass of the test film bag alone, and the surface area by a computer.
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