缝纫线有纯棉、尼龙、涤棉、混纺、涤纶和人造丝等，一般由两股、三股、四股、六股单纱捻合而成，加捻的方向可分为ｓ捻和ｚ捻两种。平缝机一般采用ｚ捻缝线，

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涤纶线常用于高档鞋、手袋、箱包皮具及汽车制造中使用，

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手工蜡线受欢迎原因，手工蜡线是选用优质环保尼龙长丝和涤纶长丝捻合后加以粘合处理而成。涤纶手工蜡线，是采用高质素涤纶纤维捻制而成，配合特殊润滑配方的线油，

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