Unverified78% confidenceTradeoffTime unknown
PP塑料材质手风琴包本身防水防潮但不透气，纸质票据长期封存易返潮发黄；重要文件长期存档应选牛皮纸/无酸纸内衬或定期开合通风
1
Sources
78%
Confidence
Long-term
Relevance
-
First Seen
Sources
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UnverifiedPP聚丙烯材质耐水耐污、不易变形，但内页为硬质半透明塑料，对纸质票据无防酸或缓冲保护，长期存放薄纸可能产生静电吸附87% similarUnverifiedPP聚丙烯材质分类夹韧性好、抗撕裂、可反复弯折不发白，适合频繁携带；纸质（牛皮纸/卡纸）挂裱夹便宜但受潮易变形，只适合固定抽屉内长期存档86% similarUnverifiedPP聚丙烯材质具备基本防水防潮能力，适合家庭存放证件复印件、保单等纸质文件长期归档85% similarUnverifiedPP材质具备基本防水防潮能力，适合存放需要防水保护的纸质文件，但不耐长期重压易变形85% similarUnverifiedPVC覆膜或PET塑封材质的卡片可耐受餐厅油污、水渍反复擦拭，寿命远超普通铜版纸；纸质卡在潮湿环境下1-2次接触即可能模糊，长期携带应选塑封或PP磨砂材质82% similar
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