Special spinneret plate for spinning PA6 bulk yarns

Abstract

The invention discloses a special spinneret plate for spinning PA6 bulk yarns. The special spinneret plate comprises an oblong-shaped spinneret plate body, wherein the middle part of the spinneret plate body is provided with an elliptical spinneret hole area, the interior of the spinneret hole area is provided with 80 spinneret holes, each spinneret hole consists of an elastic convergent area I, an elastic convergent area II and a capillary area from top to bottom in sequence, each elastic convergent area I and each elastic convergent area II are respectively of an inverted frustum-shaped structure, each capillary hole is of a three-blade shape, the three blades of each three-blade capillary hole are respectively and uniformly distributed along the center of the corresponding capillary hole to the outside, the length of each blade is 0.7mm, and the width is 0.3mm. The special spinneret plate has the advantages that a melting body is enabled to be slowly converged and transited to a guide hole for elastic loosening, and then is subject to the elastic convergence to enter each capillary hole for spinning, so the damage to the melting body due to the large shearing force caused by the melting body entering and exiting the guide hole in the spinneret plate is greatly reduced by the elastic convergent, the uniform temperature and viscosity of the melting body are kept, the fiber with high quality is favorably spun, the spun fiber has bright and attractive luster, and the requirement of the carpet industry on the luster of the bulk yarn is met.

Description

technical field [0001] The invention relates to the field of chemical fiber textile equipment, in particular to a special spinneret for spinning PA6 bulked yarn. Background technique [0002] The scientific name of PA6 is polyamide 6, and the trade name is nylon 6 or nylon 6. PA6 fiber has good wear resistance, elastic recovery, corrosion resistance and moisture absorption performance, and is widely used in textiles for clothing decoration industry. Therefore, in PA6 fiber Most of the weaving field focuses on the varieties required for the production of clothing and industrial textiles. In the field of textiles for clothing, the main specifications of PA6 products are from 60-300 denier, and the cross-section of the fiber is mainly circular, and some textile silk fiber varieties use triangular, trilobal and other cross-section fibers. The fineness specifications of PA6 products in industrial fibers are from 840-3000D. Due to the high difficulty of spinning and the fineness ...

AI Technical Summary

Problems solved by technology

In recent years, due to the good wear resistance and elastic recovery properties of PA6, its application has rapidly expanded in the carpet industry. A PA6 bulked yarn variety has been developed and used to make commercial and automotive blankets. The fineness of PA6 bulked yarn products Generally, it is 900-2000 denier, which is equivalent to industrial fibers. However, because carpet fibers have high requirements on gloss, round fiber cross-sections cannot be used. According to the requirements of the carpet industry for color and gloss, they must be used. The three-lobed type is the same as the cross-section of the fiber for clothing, but in terms of the modulus ratio of the three-lobed type, the PA6 bulked yarn is required to be above 2.0, and the three-lobed modulus of the fiber for clothing is 1.2-1.6. From the PA6 spinning technology The higher the fineness, the more difficult it is. From the perspective of trilobal fiber production technology, the larger the modulus, the more difficult it is.

In addition, from the spinning technology of PA6 fiber, due to the huge difference in the color masterbatch used in various colors, it is difficult to spin when spinning different colors, and the production efficiency and yield of the product have certain differences.

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