设计、组装了一套简易的微孔包装。以CO2 为实验气体,理论上分析了微孔包装内CO2 气体浓度的动态变化规律,同时测定了微孔包装内CO2 气体浓度的动态变化数据。研究结果表明,微孔包装内实际测定的CO2气体浓度远高于理论值。采用孔末端效应对此差异进行了分析,并提出了孔有效长度矫正公式def =d+7r / 6。

A simple packaging device with perforations was set up. CO2 was used as experimental gas. Dynamical CO2 concentration in the package was theoretically analyzed and practically measured. Results showed that practical measurement of CO2 concentration in the package were much higher than theoretical analysis. The results were explicated as perforation end effect, and meanwhile the corrective formula of effective length of perforation in the film was put forward, which was def =d+7r /6.