Unverified83% confidenceDecision RuleTime unknown
耐低温标注需达-20℃以下（家用冷冻室通常-18℃），袋体材质应为多层复合PE/PET结构，单层PE袋在-18℃长期冷冻会脆化开裂
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Unverified冷藏门架长期处于2-8℃、冷冻区-18℃环境，普通PP塑料低温易脆裂，应选PET或ABS材质，冷冻区收纳需明确标注耐低温至-20℃87% similarUnverified冷冻室专用收纳盒必须选择PP材质且标注耐温范围-20℃以下，普通PET材质在-18℃冷冻环境下会变脆开裂86% similarUnverified食品级PE材质的耐低温可达-40℃至-60℃，普通家用冷冻室（-18℃）任何合格PE袋都足够，无需为冷冻额外担心材质耐寒83% similarUnverified冷冻用途须认准标注-18℃或-20℃以下耐低温的PE材质，普通PP袋在冷冻室会变脆开裂；HDPE/LDPE低温延展性优于PP82% similarUnverified可冷冻真空袋需选低温不脆化的材质（PE或多层复合），普通薄款PVC在-18℃冷冻后易脆裂漏气，冷冻标注和耐低温说明应在包装明确标出82% similar
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