Process for producing natural elastic yarn-dyed fabrics with mulberry boiled-off silk wefts

Abstract

The invention discloses a process for producing natural elastic yarn-dyed fabrics with mulberry boiled-off silk wefts, and belongs to the technical field of production of natural elastic yarn-dyed fabrics with mulberry silk. The process includes warp preparation, weft processing, yarn dyeing and after finishing. Warps are made of 23 dtex mulberry raw color silk f1, weft processing sequentially includes steps of doubling, primary twisting, primary type approval, coiling, degumming, dyeing, sizing, heavy twisting and secondary type approval, and doubling includes carrying out zero-twist doublingon every four 4 pieces of 23 dtex mulberry raw silk f1; primary twisting is carried out under the condition of 500 twist / meter in S twist directions; primary type approval is carried out at the temperature of 80 DEG C for 40 min; sizing slurry comprises sodium alginate with the mass concentration of 5 g / L, the bath ratio is 1:15, and heat is preserved at the temperature of 50 DEG C for 20 min; the twist directions of strong twisting are identical to the twist directions of primary twisting, and strong twisting is carried out under the condition of 2600 twists / meter; secondary type approval iscarried out at the temperature of 90 DEG C for 60 min; after finishing includes hot water loose type low-tension type approval, the bath ratio is 1:10, water is heated until the temperature of the water reaches 60 DEG C, heat is preserved at the temperature of 60 DEG C for 30 min, and after finishing is carried out to obtain the natural elastic yarn-dyed fabrics which are finished products. The process has the advantages that the natural elastic yarn-dyed fabrics are easy to weave, the mulberry boiled-off silk wefts for weaving the natural elastic yarn-dyed fabrics are low in type approval temperature and little in strength damage after being twisted, and the natural elastic yarn-dyed fabrics have good hand feeling.

Description

【Technical field】 [0001] The invention relates to a production process of a natural elastic yarn-dyed fabric comprising mulberry silk cooked silk weft, and belongs to the technical field of production of a mulberry silk natural elastic yarn-dyed fabric. 【Background technique】 [0002] Pure mulberry silk natural elastic yarn-dyed fabric is mainly used for some big brands, such as making high-end skirts, high-end pajamas, etc. The fabric is natural and elastic, comfortable, not tight and environmentally friendly, and it overcomes the common suture slippage in woven fabrics. and even the disadvantages of cracking. [0003] The mulberry silk raw silk setting technology is relatively mature, the temperature required for setting is low, usually 85-88 degrees, and the setting time is 50 minutes. After setting, the twist is stable and does not affect the strength of mulberry silk raw silk. The internal stress of twisting causes the fabric to naturally retract, thereby forming a cer...

AI Technical Summary

Problems solved by technology

[0005] 1. The untwisted raw silk weft of mulberry silk is easy to fluff during degumming into cooked silk, which will affect the quality of the subsequent weaving fabric;

[0006] 2. During the process of high-twisting cooked silk weft, it is easy to fluff and single fiber is easy to break, and the high-twisted weft is easy to wrinkle, which ultimately affects the weaving quality;

[0007] 3. Since there is no residual sericin in the weft silk of mulberry silk cooked silk, the twist cannot be fixed by conventional setting temperature parameters after high twisting of cooked silk. The unfavorable consequences brought by the temperature will cause the silk to turn yellow, become brittle, and the strength will decrease. If the temperature is lowered, it will not only fail to meet the requirements of the fixed twist process, but the low setting temperature will cause the cooked silk and weft to wrinkle and cannot be woven. Weaving, and reducing the twist will affect the expected elastic effect of elastic fabrics. The weaving test has been verified: the conventional method of mulberry silk boiled silk can not increase the high twist

[0008] The natural elastic yarn-dyed fabric of mulberry silk boiled silk weft and its production technology have not been reported in relevant magazines, professional journals and materials at home and abroad. Before the present invention was made, the natural elastic color of mulberry silk cooked silk weft Fabric products have not yet been developed