This paper introduces the key step of fully shrinking for suitable elasticity in cheese dyeing of PTT filament core-spun elastic yarn and staple blended yarn.

通过分析，认为PTT弹性长丝包芯纱线及短纤维混纺纱线的筒子染色关键，是使其充分收缩，以达到适宜弹性；

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The article introduces new technical and process for core-spun spandex before or after cheese dyeing, and try to keep and recover the elasticity of spandex in finishing.

并在后整理时采用一定的方法使应力回缩，恢复氨纶纱的特性。

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The main elements to influence dyeing quality of package dyed yarn are detailedly introduced from the aspects of cheese shaping, winding density, dyeing equipment, water quality and dyestuffs purity.

从筒子纱的成形、染色设备、水质、染料纯度几方面对影响筒子纱染色质量的主要因素做了详细的介绍。

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