Production method of special-shaped polyester pre-oriented yarn and fully drawn yarn (POY/FDY) combined filament multiplex yarn

Abstract

The invention discloses a production method of special-shaped polyester pre-oriented yarn and fully drawn yarn (POY / FDY) combined filament multiplex yarn. The method includes the steps that S1: high polymer PET melt with a relative viscosity of 0.60 to 0.62 dL / g is filtered by a melt filter with a filter fineness of 15 [mu], is then supercharged to 200 to 220 bar by a melt booster pump with smalltemperature rise and large extrusion capacity, and enters a melt cooler to adjust a melt temperature so as to ensure that the melt temperature is maintained at 278 to 282 DEG C, and S2: then the highpolymer PET melt is conveyed through a melt transmission pipeline with a high efficiency screw type static mixer to spinning manifolds with assemblies arranged in a W shape, and each spinning manifoldis provided with two positions. According to the production method of the special-shaped polyester POY / FDY combined filament multiplex yarn, the special-shaped polyester POY / FDY combined filament multiplex yarn with stable quality control, flat section, large shrinkage difference, good fabric wool feeling and unique style is convenient to obtain.

Description

technical field [0001] The invention relates to the technical field of polyester fibers, in particular to a production method of special-shaped polyester (POY / FDY) blended composite filaments. Background technique [0002] At present, composite fibers have become the advanced direction of fiber development in recent years because of their incomparable advantages over single-component fibers in product functionality, practicability, novelty, popularity, etc. Composite fibers are usually composed of two different The raw materials of the ingredients are produced through specific production methods, which endow the fibers with multiple properties. The two different raw materials composed of composite fibers on the market generally refer to two polymer materials with different physical and chemical structures, which are made by composite spinning in a certain proportion. The production equipment costs are high, quality control is difficult, and efficiency is low. The invention ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a production method of special-shaped polyester (POY / FDY) mixed fiber composite filament, aiming to improve the existing polyester fiber production and processing method with low section irregularity and poor dyeing effect, which cannot be perfected at the same time. Combine the advantages of POY and FDY to achieve the characteristics of high profile cross section, excellent dyeing, and good fabric feel. At the same time, the product quality control of the traditional polyester fiber production method is not stable enough, and the production efficiency is also poor.

Images