Unverified80% confidenceDecision RuleTime unknown
领口回弹性优先于弹力大小：反复拉伸后能恢复原状（含氨纶/弹性纱2%-5%）的领口，洗几次后不松垮；纯棉罗纹领虽软但易越洗越大导致漏风
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80%
Confidence
Long-term
Relevance
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Unverified耐洗不变形关键看领口和袖口螺纹的克重与回弹，好的螺纹反复拉伸后能迅速恢复；含2%-3%氨纶的螺纹领口比纯棉领口洗后更不易松垮变宽92% similarUnverified下摆和袖口的罗纹（螺纹）密度要够、有回弹，松垮罗纹几次洗后会失去弹性导致下摆张开变形；优质罗纹拉伸后能快速回缩，是卫衣耐穿保型的关键细节88% similarUnverified领口紧度看罗纹密度与含氨纶量：优质领口为双层螺纹罗纹并含2-5%氨纶，回弹好不易松垮；纯棉无弹力领口洗3-5次后大概率塌陷变形，选购时用手撑开领口能快速回弹为合格88% similarUnverified判断弹力回复性：拉伸下摆或袖口后松手，能立即回弹无褶皱松弛痕迹的为优；氨纶含量相同下，锦纶（尼龙）混纺比涤纶混纺回弹更持久、洗后不易松垮87% similarUnverified罗纹下摆和袖口的紧密度决定版型持久度：选克重高、罗纹紧实（含少量氨纶）的，松垮罗纹洗几次就会失去弹性变形86% similar
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