Unverified85% confidenceFactTime unknown
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
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85%
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Long-term
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Unverified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）91% 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90% similarUnverified涂层遮光布（背面涂银/涂黑）遮光率高但不透气、久用易开裂脱层，无涂层的高密度多层编织遮光布（如三层丝布）遮光率可达95%以上且能水洗，长期使用更耐久90% similarUnverified涂层遮光（银胶/黑丝涂层）比高密度织造遮光更彻底，但涂层长期会开裂脱落且不透气；三层高密度提花布遮光率约90%-95%但更耐用透气，追求99%全黑选涂层，追求耐用选高密度织造88% 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% similar
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