Method for fabricating fiber used for super bright high strength sewing threads

Abstract

The invention relates to a method for fabricating fiber used for super bright high strength sewing threads, comprising the following technique procedures: mixing and stirring raw materials terephthalic acid and glycol followed by entering into a primary esterification reactor and a second esterification reactor in sequence and then entering into a primary polycondensation reactor, a second polycondensation reactor and a final polycondensation reactor, and finally carrying out spinning, cooling, winding, filament holding, bundling, pulling, tension hot molding, rolling, loose hot forming, cutting and packaging to prepare the fiber used for super bright high strength sewing threads; the second esterification reactor is added with diglycol, the spinning temperature is 300-305 DEG C, the cooling adopts a tertiary rectifying blower to carry out wind cooling, wherein, the air entering into the tertiary rectifying blower is clean air which is treated by de-dusting by a micro fog water film de-dusting chamber; and the micro fog water film de-dusting chamber is provided with two rows of water fog spraying to each other. The invention do not use inorganic additive such as barium sulfate or titanium dioxide, thus not only ensuring the gloss effect of the fiber, but also satisfying the requirement on producing high speed sewing thread strength.

Description

technical field [0001] The invention relates to a fiber production method, in particular to a production method of super-luster high-strength sewing thread fibers, and belongs to the technical field of fiber production. Background technique [0002] As the sewing speed of garments continues to increase, the strength requirements for sewing threads are getting higher and higher. High-grade sewing threads use bright fibers as the best raw materials. [0003] Bright polyester staple fibers currently on the market generally contain 800-1200ppm of barium sulfate or titanium dioxide additives to improve processing performance. Although the product has high strength, the luster effect of the fiber is greatly weakened after adding barium sulfate or titanium dioxide, so it cannot be used to produce high-grade sewing threads; without adding barium sulfate or titanium dioxide, the drafting performance of the primary fiber during fiber production is greatly affected , the product is di...

AI Technical Summary

Problems solved by technology

Although the product has high strength, the luster effect of the fiber is greatly weakened after adding barium sulfate or titanium dioxide, so it cannot be used to produce high-grade sewing threads; without adding barium sulfate or titanium dioxide, the drafting performance of the primary fiber during fiber production is greatly affected , the product is difficult to meet the strength requirements for the production of high-speed sewing thread