Production method of low boiling water contraction rate polyester fiber drafting textured filament yarn

Abstract

The present invention relates to drafting deformed dacron filament with low boiling water shrinkage and its production process and application. The POY material filament is processed successively through the first drafting roller, the first heating box, cooling plate, false twisting unit, the second drafting roller, network forming unit, 2bis roller, the second heating box, filament guide unit and filament breaking detector; adding weak network in the resilience increasing process; oiling and winding steps to obtain DTY filament. The present invention has lower deformation temperature, higher settling temperature, short process, reasonable technological control and stable production operation; and the product has boiling water shrinkage not higher than 1.0%, excellent built-in curling elasticity and wrapping. The product may be used in making embroidery string and trademark string.

Description

Technical field: [0001] The invention relates to a polyester stretched textured yarn, in particular to a polyester stretched textured yarn with low boiling water shrinkage, and a production method and application of the stretched textured yarn. Background technique: [0002] my country is a big textile processing country, which needs to consume a large amount of embroidery threads and trademark threads every year, especially in the south of my country, where there are millions of trademark machines, and the consumption is quite considerable. These embroidery threads and trademark threads are mostly dyed by bobbins in the process of processing, which has relatively high requirements on the performance of the raw material - polyester fiber for thread, including the brightness, strength, elongation and boiling water shrinkage of the fiber. Among them, the boiling water shrinkage is a very important index, which has a relatively large impact on the cheese dyeing process. In ter...

AI Technical Summary

Problems solved by technology

Although the boiling water shrinkage rate of the FDY yarn is less than 2%, it has good dyeability and heat resistance; but compared with DTY yarn, FDY yarn lacks inherent crimp elasticity, and the fabric made has a poor hand feeling and looks rigid and dull. Stiff, lacking the soft and plump feel typical of products made with DTY yarn

Therefore, this kind of FDY silk with relatively low shrinkage in boiling water cannot replace DTY silk to make embroidery thread or trademark thread