Production method of polyamide 6FDY complete-extinction crystal yarn

Abstract

The present invention provides a production method of a polyamide 6FDY complete-extinction crystal yarn in the field of textile chemical fibers. The production method comprises the steps of S10, adding a complete-extinction slice into a material bin and conveying to a screw extruder; S20, performing melting at a set temperature, and extruding a melt from the top of the screw extruder at the set first pressure to be conveyed to a metering pump; S30, performing metering and then conveying the melt to a spinning assembly, performing filtering, and mixing pressurizing on the melt at the set secondpressure, and cooling the melt trickles sprayed from a spinneret plate by a cross air blasting cooling system to form nascent fibers; and S40, enabling the nascent fibers to pass through an oiling device, a pre-networking device, a cold and hot roller and a main network device to generate a complete-extinction crystal yarn, and winding the complete-extinction crystal yarn into a yarn cake. The production method has the advantages that the new fibers with smooth feeling, elastic and soft hand feel, stereoscopic feeling, comfort in wearing, fuzzy light spots on the fabric cloth and easiness incoloring are produced, and the production process is simple, the efficiency is high, the product quality is high and stable.

Description

technical field [0001] The invention relates to the field of textile chemical fibers, in particular to a method for producing nylon 6FDY full-dull crystal yarn. Background technique [0002] For nylon fiber, its performance is affected by cross-sectional shape, production process steps and various process parameters in the production process. These conditions are different, and the performance obtained is also different. For example, with the same production process steps, if the process parameters are different, although nylon fibers can also be produced, their properties are different. However, not all of these nylon fibers with different properties meet market demand, and most of them have no market. Competitiveness, or performance indicators do not meet the requirements; another example, the production process steps are different, although the cross-sectional shape of the produced nylon fiber is different, but its performance is also very different, and for example, the ...

AI Technical Summary

Problems solved by technology

For example, in the same production process steps, if the process parameters are different, although nylon fibers can also be produced, their properties are different. However, not all of these nylon fibers with different properties meet the market demand, and most of them have no market. Competitiveness, or the performance index does not meet the requirements; another example, the production process steps are different, although the cross-sectional shape of the produced nylon fiber is different, but its performance is also very different, and for example, the different cross-section of nylon fiber means that the structure are all different, which means that the production process steps and various process parameters also need to be redesigned

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