Unverified85% confidenceFactTime unknown
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
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified遮光率主要取决于面料涂层而非颜色深浅，浅色遮光帘通过背面三层黑丝/银涂层实现遮光，与深色帘遮光效果相当；不要仅凭颜色深浅判断遮光能力90% similarUnverified涂层遮光布（背面白色/黑色胶层）遮光率高但不透气、易折痕开裂；提花三层编织布遮光率同样可达99%且垂感透气更好，长期使用优选后者88% similarUnverified真正的高遮光靠面料本身密织+黑丝涂层实现，而非颜色深浅。选购时应把面料对着强光看是否透光，深色但薄的窗帘可能仅遮光70%，浅色三层复合布反而能达99%87% similarUnverified真正全遮光靠的是'黑丝'涂层或三层机织黑纱夹层，而非单纯颜色深浅——浅色窗帘只要含黑丝层也能全遮光；判断标准是把面料贴眼强光照射看是否透光，而非看克重或颜色87% similarUnverified全遮光面料的遮光原理是中间的黑色遮光丝层，而非表面颜色，因此浅色甚至白色遮光帘同样可实现99%遮光，选颜色时不必因遮光需求牺牲外观84% similar
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