Based on standard T/CWA 205-2021"Packing materials for building sealants",the performance requirementsof packing materials for sealants are introduced in this article.It points out that packing materials should be printed clearly and have no ghosting;in addition to basic mechanical properties,water vapor permeability and whether there is virtual sealing at the heat sealing area should be focused on for soft film;for plastic bottles,the compatibility between the bottle body and the bottom cover,the toughness of the bottle mouth,and the leakage-proof performance should be focused on;after filling the sealant,it should be stored in an environment with a temperature of 5～27 ℃ and a humidity not exceeding 70％.
关键词
密封胶/包装材料/软膜/塑料胶瓶/外观/理化性能/贮存条件
Key words
sealant/packing materials/soft film/plastic bottle/appearance/physical and chemical performance/storage conditions
维普
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