Production method of PET industrial yarns

Abstract

The invention discloses a production method of PET industrial yarns. The method comprises the technological steps of (1) preparation of high-viscosity slices, (2) spinning, (3) drafting and (4) winding, wherein at the step (3), drafting, thermal shaping and loosening are conducted by six pairs of drafting rollers under a certain spinning speed. The invention aims to provide the production method of the PET industrial yarns. The method is used to prepare the PET industrial yarns with good shrinkage characters. The method is applicable to production of wide fabrics; and demands for film structure materials can be satisfied.

Description

technical field [0001] The invention relates to the field of textile technology, in particular to a production method of polyester industrial yarn. Background technique [0002] Since the advent of polyester in the 1950s, great progress has been made in the development of industrial applications. Due to its low heat shrinkage, polyester industrial yarn is widely used in the field of narrow-width fabrics such as filter cloth, sunshade cloth, tarpaulin, etc. The dry heat shrinkage of traditional low-shrinkage polyester industrial yarn is about 2 %(177℃, 1min, 0.05g / D), the polyester industrial yarn with this level of dry heat shrinkage will have a large shrinkage rate and uneven shrinkage after being woven into cloth and heat-treated by coating, which may easily cause uneven cloth surface. Flat, so it can only be used for the weaving of narrow fabrics. In recent years, due to the rapid development of membrane structural materials in construction, higher requirements have bee...

AI Technical Summary

Problems solved by technology

Due to its low heat shrinkage, polyester industrial yarn is widely used in the field of narrow-width fabrics such as filter cloth, sunshade cloth, tarpaulin, etc. The dry heat shrinkage of traditional low-shrinkage polyester industrial yarn is about 2 %(177℃, 1min, 0.05g / D), the polyester industrial yarn with this level of dry heat shrinkage will have a large shrinkage rate and uneven shrinkage after being woven into cloth and heat-treated by coating, which will easily cause uneven cloth surface. Flat, so it can only be used for the weaving of narrow fabrics

In recent years, due to the rapid development of membrane structural materials in construction, higher requirements have been put forward for the width of fabrics. Ordinary low-shrinkage polyester industrial yarns cannot meet the requirements of wide fabrics with a width of more than 5 meters. Therefore, a shrinkage fabric has been developed. Polyester industrial yarn with lower efficiency can be used to produce wide-width fabrics to meet the needs of membrane structural materials, which is extremely urgent