Technique for preparing bright polyester filament yarn with high extension

Abstract

The invention relates to a manufacture technology of a high stretching bright polyester filament which is a bright polyester filament product manufactured by adopting a common chip spinning manufacture flow with a micro-injection method to add a special aether additive in a melt through a special technique. The high stretching bright polyester filament manufactured by the method has the qualities of normal intensity, more than 40 percent of crack stretching rate, low boiling water shrinkage factor and few broken filament end cracking; besides, the manufacture operation is more stable. As a common terylene high speed spinning technique line is adopted, the invention has low requirements on the device; the output is high, the additive value of the product is high, the investment cost can be reduced and the economic benefit can be improved.

Description

technical field [0001] The invention relates to a production technology of differentiated polyester filament, which belongs to the technical field of chemical fiber. Background technique [0002] In the chemical fiber family, the fibers with higher elongation at break include nylon and spandex. They are not only widely used in the production of sportswear and tight underwear that require high elasticity, but also in industries such as cords, Drive belts, hoses, ropes, fishing nets, tires, parachutes, etc. [0003] However, although nylon and spandex filaments have the performance advantages of the above-mentioned aspects, their prices are very high due to many restrictions on raw materials and production processes. At this stage, many domestic enterprises have conducted research on polyester modification, with the purpose of finding a differentiated technology for producing high-elongation polyester, which can be used to replace nylon or spandex, thereby reducing production...

AI Technical Summary

Problems solved by technology

[0006] According to our search and exchanges with domestic counterparts, the highest elongation at break that domestic polyester filaments can achieve at this stage does not exceed 35%, so there are no reports of so-called polyester brocade related products.

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