Warp-knitted Fabric of Filament and short staple composite yarn and preparation method thereof

Abstract

The present invention discloses a warp-knitted fabric of filament and short staple composite yarn and a preparation method thereof. The warp-knitted fabric of filament and short staple composite yarn is prepared by the corresponding preparation method for the warp-knitted fabric of filament and short staple composite yarn. The preparation method for the warp-knitted fabric of filament and short staple composite yarn has excellent weavability, and can effectively prepare the warp-knitted fabric which is high in size stability, is soft, has high elasticity, is wrinkle-resistant and has an excellent hand feeling and comfort. Moreover, in the preparation method, soluble fiber filaments can be added to prepare a warp-knitted fabric or a 3D interval warp-knitted fabric which is partially or entirely formed by 100% short staple yarns; and low-melting-point filaments can also be added to prepare a warp-knitted fabric which can be randomly cut and has no edge curling variation.

What is claimed is: 
     
         1 . A preparation method for a warp-knitted fabric of filament and short staple composite yarn, characterized by comprising the following specific process steps:
 A1, selecting chemical fiber filaments and short staples, and carrying out composite forming to the chemical fiber filaments and the short staples to form composite yarns, wherein the composite yarns are doubled and twisted threads of the chemical fiber filaments and the short staples or core spun yarns of the chemical fiber filaments and the short staples or siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on a spinning frame;   A2, feeding the composite yarns into a warping machine for warping;   A3, feeding the warped composite yarns into a warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is a warp-knitted fabric greige or a 3D interval warp-knitted fabric greige;   A4, dyeing and finishing the warp-knitted fabric greige; and   A5, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of a warp-knitted fabric.   
     
     
         2 . The preparation method for the warp-knitted fabric of filament and short staple composite yarn, characterized in that water-soluble Poly Vinyl Alcoho (PVA) filaments or soluble polyester filaments are used as chemical fiber filaments, and the specific process steps are as follows:
 A1, selecting the water-soluble PVA filaments or the soluble polyester filaments and the short staples, and carrying out composite forming to the water-soluble PVA filaments and the short staples to form composite yarns, wherein the composite yarns are the doubled and twisted threads of the chemical fiber filaments and the short staples or the core spun yarns of the chemical fiber filaments and the short staples or the siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on the spinning frame;   A2, feeding the composite yarns into the warping machine for warping;   A3, feeding the warped composite yarns into the warp knitting machine for warp-knitting weaving, and processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is the warp-knitted fabric greige or the 3D interval warp-knitted fabric greige;   A4, for the warp-knitted fabric greige using the water-soluble PVA filaments as the chemical fiber filaments, placing the warp-knitted fabric greige into hot water to dissolve the soluble PVA filaments, and for the warp-knitted fabric greige using the soluble polyester filaments as the chemical fiber filaments, placing the warp-knitted fabric greige into alkaline solution to dissolve the soluble polyester filaments, wherein content of cotton and Poly Butylene Terephthalate (PBT) in the warp-knitted fabric greige is 67.2% and 32.8%, respectively, and the gram weight of the warp-knitted fabric greige is 240 g/m 2 ;   A5, dyeing and finishing the warp-knitted fabric greige subjected to dissolution processing; and   A6, setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.   
     
     
         3 . The preparation method for the warp-knitted fabric of filament and short staple composite yarn, characterized in that low-melting-point filaments are adopted as chemical fiber filaments, a filament and short staple composite yarn warp-knitted fabric is a fabric capable of being randomly cut and knitted, and the specific process steps are as follows:
 A1, selecting the low-melting-point filaments and the short staples, and carrying out composite forming to the low-melting-point filaments and the short staples to form composite yarns, wherein the composite yarns are the doubled and twisted threads of the chemical fiber filaments and the short staples or the core spun yarns of the chemical fiber filaments and the short staples or the siro-fil covered yarns directly formed by the chemical fiber filaments and the short staples on the spinning frame;   A2, feeding the composite yarns into the warping machine for warping;   A3, feeding the warped composite yarns into the warp knitting machine for warp-knitting weaving, processing and producing warp-knitted fabric greige, wherein the warp-knitted fabric greige is the warp-knitted fabric greige or the 3D interval warp-knitted fabric greige;   A4, dyeing and finishing the warp-knitted fabric greige; and   A5, heat-setting the dyed and finished warp-knitted fabric greige so as to complete the preparation of the warp-knitted fabric.   
     
     
         4 . The preparation method for the warp-knitted fabric of filament and short staple composite yarn according to  claim 1 , characterized in that the chemical fiber filaments are natural fiber silk, rayon adhesive filaments, synthetic polyester filaments or synthetic polyamide filaments. 
     
     
         5 . The preparation method for the warp-knitted fabric of filament and short staple composite yarn according to  claim 1 , characterized in that the short staples are natural short staples or chemical short staples. 
     
     
         6 . A warp-knitted fabric of filament and short staple composite yarn, characterized by being prepared according to the preparation method according to any one of  claims 1  to  5 .