Unverified83% confidenceDecision RuleTime unknown
防水性能分表面拒水（DWR涂层）和结构防水：日常防小雨看面料DWR，暴雨或涉水环境必须选带内置防雨罩（rain cover）或TPU防水拉链的款；仅DWR涂层泡雨30分钟以上仍会渗水
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Unverified防水性方面，需区分'防泼水涂层（DWR）'与'防水拉链+压胶接缝'：绝大多数防盗背包只做DWR，大雨下15分钟即渗水，真正防雨需选带独立雨罩或TPU涂层的款式90% similarUnverified'防泼水'(DWR涂层)与'防水'(耐水压膜)是两个概念：DWR只让水珠滚落，30分钟以上中雨会浸透，真正防雨需带PU或TPU防水膜90% similarUnverified防水性能上，DWR涂层只能防小雨且会随洗涤衰减，真正防水需看是否有压胶接缝+防水拉链；超轻折叠包大多只做DWR，需长时间雨中使用应另配防雨罩90% similarUnverified防泼水面料（DWR涂层）只能应对小雨短暂淋雨，真正防大雨需要卷口式防水袋结构或独立防雨罩，普通拉链缝线处仍会渗水89% similarUnverified普通防泼溅（DWR涂层）仅能应对小雨和溅水，暴雨或长时间淋雨会渗透；真正防水需选带TPU覆膜面料+防水拉链，或自带收纳式雨罩的款式89% similar
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