Unverified80% confidenceTradeoffTime unknown
防水涂层拉链越防水拉合越费力，PU涂层紧密的防水链需要用力拉且拉链头易磨损涂层；日常轻度防泼水需求选防泼水链即可，不必上全防水链
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80%
Confidence
Long-term
Relevance
-
First Seen
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Unverified宣称"防水"的PU/涂层材质仅防泼溅，接缝和拉链处仍会渗水；真正防水需焊接密封边+防水拉链，普通证件包不应期望浸泡级防护86% similarUnverified外层材质选1000D以上锦纶或PU涂层可防泼溅，但真正防水需看拉链是否为防水拉链，普通拉链缝隙仍会渗水83% similarUnverified防水性能依赖密封拉链和防水尼龙面料，日常防溅和短时涉水可以胜任，但不适合长时间浸泡水中83% similarUnverified拉链闭合设计穿脱比套筒式更方便，但拉链齿与防水挡片结合处是防水最薄弱点，长期踩踏或深水浸泡后容易从此处渗水83% similarUnverified标称防水但压胶条不密封或用普通拉链的，实际防水会从缝线和拉链渗漏；认准全压胶（fully seam-sealed）+防水拉链83% similar
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