洗衣凝珠水溶包装膜的储存及使用

Storage and Use of Water-Soluble Packaging Film for Laundry Beads

本文探讨了不同环境温湿度对聚乙烯醇薄膜(以下简称PVA薄膜)含水率及性能的影响,比较了几种包装材料的防潮效果。结果表明:随着环境湿度的增加,PVA薄膜的含水率升高,抗拉强度降低,断裂伸长率升高,热封温度降低。PVA薄膜的含水率对溶解性能影响不大。AL/PET复合膜防潮效果较好,对于洗衣凝珠加工,PVA薄膜的储存及使用条件在30℃以下,45RH%左右时,性能满足使用要求。建议在潮湿地区选择AL/PET复合膜作为PVA薄膜包材。

The effects of different ambient temperature and humidity on the moisture content and properties of PVA water-soluble film were discussed, and the moisture-proof effects of several packaging materials were compared. The results showed that the moisture content of PVA film increased with the increase of ambient humidity. At the same time, the tensile strength decreased, the elongation at break increased, and the heat sealing temperature decreased. The water content of PVA film has little effect on the solubility. Al/PET composite film has good moisture-proof effect. For laundry bead processing, when the storage and use conditions of PVA film is below 30℃ and about 45 rh%, the performance can meet the use requirements. For humid areas, Al/PET composite film can be selected as PKVeAyw filomr dpsac: kaging material.