不同的温湿度对预制菜包装膜水蒸气透过率的影响  

The Effect of Different Temperature and Humidity on the Water Vapor Transmission Rate of Pre Packaged Food Packaging Film

作　　者：刘佳腾 王莹 张彦波 田飞 袁云龙 LIU Jiateng;WANG Ying;ZHANG Yanbo;TIAN Fei;YUAN Yunlong(Dalian Product Quality Inspection and Testing Research Institute Co.,Ltd.,Dalian 116000,China)

机构地区：[1]大连产品质量检验检测研究院有限公司,辽宁大连116000

出　　处：《现代食品》2025年第2期106-109,114,共5页Modern Food

基　　金：2024年度辽宁省市场监督管理局科技计划项目(技术保障类)(2024JS007)。

摘　　要：本文主要研究了不同温度和湿度对预制菜包装膜的水蒸气透过率的影响。气体分子穿透包装材料的过程按照溶解后扩散的机制进行,分子若能迅速溶解于材料表面,且在材料内部具备良好的扩散性能,那么单位时间内通过单位面积材料的气体数量就会增多,即气体透过量高,因此,任何能够对气体分子的溶解或扩散过程产生影响的因素,都会影响材料的气体透过率。试验表明,食品包装膜在特定的相对湿度条件下,其水蒸气透过率会随着温度的上升而增加;同样,在恒定的温度下,水蒸气透过率也会随着相对湿度的提升而上升。选择38℃,相对湿度90%的高温高湿条件时仍满足GB/T 21302-2007中水蒸气透过率3级标准。故选择38℃、相对湿度90%的温湿度条件。This study mainly investigates the influence of different temperatures and humidity on the water vapor transmission rate of prefabricated vegetable packaging film.The permeation process of gas molecules in packaging materials follows the principle of dissolution diffusion.The faster the dissolution rate of molecules on the surface of the material,the stronger the diffusion ability inside the material.Therefore,the more gas can penetrate through a unit area of material per unit time,and the higher the gas permeability.Therefore,any factor that affects the dissolution and diffusion of gas molecules will affect the gas permeability of the material.Experiments have shown that the water vapor transmission rate of the food packaging film increases with temperature at a certain relative humidity;At a certain temperature,the water vapor permeability increases with the increase of relative humidity.When selecting high temperature and high humidity conditions of 38℃and relative humidity of 90%,it still meets the Class 3 standard for water vapor transmission rate in GB/T 21302-2007.Therefore,the temperature and humidity conditions of 38℃and 90%relative humidity were chosen.

关 键 词：包装膜 水蒸气透过率 温度 湿度 

分 类 号：TS206.4[轻工技术与工程—食品科学]