Unverified80% confidenceDecision RuleTime unknown
涤纶遮光布靠涂层实现遮光的三层布中，中间黑丝层是遮光核心，选购要认准环保涂层，避免PVC涂层款（可能含塑化剂），优先无涂层的纯物理三层编织遮光布
1
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80%
Confidence
Long-term
Relevance
-
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Unverified遮光原理分三类：涂层遮光（背面PU/银胶涂层，遮光率高但涂层易开裂脱落、不透气）、三层织造遮光（黑丝夹层，遮光率95%左右、可水洗、更耐用）、高密度厚织（无涂层，遮光率约70-85%但手感垂坠自然）。追求久用选三层织造，追求极致全黑选涂层88% similarUnverified全遮光布常见结构分为三类：单层染色（可洗、遮光约95-99%）、三层复合黑丝布（遮光100%、垂感好）、涂银涂层（遮光隔热最强但不可洗）85% similarUnverified三层复合遮光布（面料+黑丝+背布）遮光和挺括度好但硬挺不易垂坠且厚重难晒干；单层黑丝涂层布轻便但涂层直接暴露易磨损；高密提花布手感垂坠、可机洗但遮光通常在90%左右85% similarUnverified黑丝布（三层黑纱）遮光率高但透气差易发闷，涂层银胶布遮光同样好但易开裂脱落，长期使用优先选夹层黑丝而非表面涂层工艺84% similarUnverified深色遮光布遮光率天然高于浅色，白色/米色遮光布必须依靠中间涂层或黑丝层才能全遮光，选购浅色全遮光帘时应确认是否为三层复合结构83% similar
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