Unverified78% confidenceFactTime unknown
防水/防撕材质（如Tyvek杜邦纸）信封重量约55-75g/m²，抗撕裂性远高于普通80g牛皮纸，适合托运行李中携带或雨季投递，避免单据受潮字迹模糊
1
Sources
78%
Confidence
Long-term
Relevance
-
First Seen
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Unverified随身携带的口袋版急救手册体积应≤A6尺寸、重量≤80g，且采用防水铜版纸或PVC材质，否则在雨天/涉水场景会因纸张损毁失去作用78% similarUnverified克重≥45g/㎡（约0.3mm厚）的无纺布湿巾擦拭不易破、不掉屑；便携装（8-10抽）适合随身，抽取式大包（80抽）性价比高但开封后需注意保湿封条防干78% similarUnverified克重决定防渗透性：单片克重≥40g/㎡且含防水膜的产品才能有效隔绝座圈水渍，低于30g的纯纸质款遇水易破，仅适合干燥座圈临时使用77% similarUnverified抽纸礼盒选3层且克重≥14g/㎡（单层）的产品，柔韧性和吸水性明显优于2层薄纸，擦拭不易破洞掉屑77% similarUnverified克重仅45-50g，纸张较薄较软，单层缓冲保护力有限，包裹重型或高价值易碎品需多层缠绕或配合气泡膜使用76% similar
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