Unverified90% confidenceTradeoffTime unknown
TPU三层结构热熔胶带的接缝防水性能与耐水洗次数（50次以上）显著优于自粘型胶带，但代价是必须依赖设备，无法手工操作
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90%
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Long-term
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UnverifiedTPU防水性能取决于拼接缝处是否做热压或胶条密封处理，购买前应确认缝合处工艺，否则接缝处仍可能渗水85% similarUnverified防水层应采用TPU贴合工艺而非PVC/PU涂层，TPU无塑化剂、耐洗次数可达50次以上且更柔软，PVC涂层洗5-10次后易开裂脱落失去防水84% similarUnverified真正防水需选PU涂层或TPU材质并带防水拉链，普通尼龙+普通拉链仅能防泼溅；接缝处热压工艺比车缝线更防渗水84% similarUnverified防水层选TPU优于PVC/PE涂层：TPU无塑化剂、耐反复水洗和高温烘干不易开裂，PVC涂层洗3-5次后易起皮龟裂失去防水性84% similarUnverified真正防水（可装洗漱湿物）需选TPU涂层或PVC材质+防水拉链或压边热压工艺，普通涤纶+YKK拉链只能防泼溅不能防浸泡84% similar
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