Process for preparing plied yarn by one-step process using textured yarn and highly retractable yarn

Abstract

The invention relates to a process for preparing plied yarn by one-step process using textured yarn and highly retractable yarn, comprising: having the draw texturising machine as main processing device, drawing and deforming the pre-oriented yarn POY, heating moulding the produced deforming yarn by the heat moulding box and the third drawing roll; meanwhile, setting the fourth and fifth drawing roll on the draw texturising machine, feeding and drawing the highly retractable yarn, sending into network device for combining with the deformation yarn, detecting and oiling by guide, detector and oiling roll, finally winding to obtain the resultant yarn. The invention increases the moulding procedure of the deformation yarn, solves the problem the moulding the yarn combining in a single step. The resultant yarn has a good fastness and uniformity of the network degree, little yarn breakage which can be used to produce the material like wool fabrics, polyester peach skin, suede nap.

Description

technical field [0001] The invention belongs to the production process of synthetic fibers, and relates to a preparation method of ply yarn, in particular to making ply yarn from textured yarn and high-shrinkage yarn through a one-step process route. Background technique [0002] When developing wool-like fabrics, jeanette, and suede fabrics, some varieties need to combine various forms of textured yarns such as fine denier yarns, ultra-fine denier yarns, and sea-island yarns with high-shrinkage yarns to obtain plied yarns. During dyeing and finishing, due to the different thermal shrinkage rates of the two fibers, the high-shrinkage fiber produces a large shrinkage and forms a skeleton; while the textured yarn has a relatively small shrinkage rate and floats on the surface to maximize the superfine fiber effect on the surface and form a skeleton. Better wool and velvet feeling, or better display of artificial leather effect. Therefore, the excellent properties of this kind...

AI Technical Summary

Problems solved by technology

However, the textured yarn in this production method has not undergone high-temperature heat setting, resulting in defects in the process and product quality, mainly as follows:

[0007] First, the internal stress between the molecules of the textured yarn is relatively large, and the molecular structure is unstable, resulting in uneven dyeing;

[0008] Second, the internal residual torque of the textured yarn is relatively large, and the phenomenon that the high-shrinkage yarn floats on the surface of the textured yarn when it is plied with the high-shrinkage yarn makes the high-shrinkage yarn float on the surface of the cloth surface during fabric finishing, which affects the fabric surface. styles and effects

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