High-elastic viscous weft-knitted fabric and its preparation method and application

Abstract

The present application relates to a high-elastic viscous weft-knitted fabric and its preparation method and application. The preparation method includes the steps of weft-knitting low-temperature spandex filament and nylon to form a stitch structure having a needle-containing double-sided stitch, an upper single-sided stitch and a lower single-sided stitch, and weaving in cycles to form the high-elastic viscous weft-knitted fabric. The quality content of spandex in the high-elastic viscous weft-knitted fabric is greater than 50%. The present application provides a high-elastic viscous weft-knitted fabric obtained from the above-mention preparation method. The present application also provides a lady brassiere inner lining made of the above-mentioned high-elastic viscous weft-knitted fabric. The high-elastic viscous weft-knitted fabric of the present application is a double-sided weft-knitted fabric with nylon on one side and spandex on the other side. It possesses high elasticity and viscosity, has high content of spandex and is not easy to deform.

What is claimed is: 
     
         1 . A method for preparing a high-elastic viscous weft-knitted fabric, the preparation method comprising the steps of weft-knitting 20 D and/or 70 D low-temperature spandex filament and 30 D and/or 50 D nylon to form a stitch structure comprising a needle-containing double-sided stitch, an upper single-sided stitch and a lower single-sided stitch, and weaving in cycles to form the high-elastic viscous weft-knitted fabric, wherein the low-temperature spandex filament is weaved to form the needle-containing double-sided stitch, the low-temperature spandex filament is weaved to form the upper single-sided stitch, the low-temperature spandex filament and the nylon are weaved to form the lower single-sided stitch, and quality content of spandex in the high-elastic viscous weft-knitted fabric is greater than 50%. 
     
     
         2 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 1 , wherein the preparation method specifically comprises the steps of:
 weft-knitting the 20 D and/or 70 D low-temperature spandex filament and the 30 D and/or 50 D nylon;   needle-containing weaving the low-temperature spandex filament with a needle on an upper needle dial, and simultaneously needle-containing weaving the low-temperature spandex filament with a needle on a lower needle dial to form the needle-containing double-sided stitch;   needle weaving the low-temperature spandex filament with the needle on the upper needle dial without weaving with the needle on the lower needle dial to form the upper single-sided stitch;   needle weaving the low-temperature spandex filament and the nylon simultaneously with the needle on the lower needle dial without weaving with the needle on the upper needle dial to form the lower single-sided stitch;   weaving to form the stitch structure including the needle-containing double-sided stitch, the upper single-sided stitch and the lower single-sided stitch, and then producing the high-elastic viscous weft-knitted fabric after cycles of weaving.   
     
     
         3 . A method for preparing a high-elastic viscous weft-knitted fabric, the preparation method comprising the steps of weft-knitting spandex filament and nylon to form a stitch structure comprising a needle-containing double-sided stitch, an upper single-sided stitch and a lower single-sided stitch, and weaving in cycles to form the high-elastic viscous weft-knitted fabric. 
     
     
         4 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the spandex filament is a low-temperature spandex filament. 
     
     
         5 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the spandex filament is 20 D, 70 D, or a combination of 20 D and 70D. 
     
     
         6 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the nylon is 30 D, 50 D, or a combination of 30 D and 50 D. 
     
     
         7 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the spandex filament is weaved to form the needle-containing double-sided stitch. 
     
     
         8 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 7 , wherein yarn length of the spandex in the needle-containing double-sided stitch is 15.0 cm-15.5 cm/100 G. 
     
     
         9 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the spandex filament is weaved to form the upper single-sided stitch. 
     
     
         10 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 9 , wherein yarn length of the spandex in the upper single-sided stitch is 13.0 cm-13.5 cm/100 G. 
     
     
         11 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the spandex filament and the nylon are weaved to form the lower single-sided stitch. 
     
     
         12 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 11 , wherein yarn length of nylon in the lower single-sided stitch is 25.5 cm-26.5 cm/100 G. 
     
     
         13 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 11 , wherein yarn length of the spandex in the lower single-sided stitch is 12.5 cm-13.5 cm/100 G. 
     
     
         14 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein quality content of spandex in the high-elastic viscous weft-knitted fabric is greater than 50%. 
     
     
         15 . The method for preparing a high-elastic viscous weft-knitted fabric as claimed in  claim 3 , wherein the steps of weft-knitting spandex filament and nylon to form a stitch structure comprising a needle-containing double-sided stitch, an upper single-sided stitch and a lower single-sided stitch comprising:
 weft-knitting the spandex filament and the nylon;   needle-containing weaving the spandex filament with a needle on an upper needle dial, and simultaneously needle-containing weaving the spandex filament with a needle on a lower needle dial to form the needle-containing double-sided stitch;   needle weaving the spandex filament with the needle on the upper needle dial without weaving with the needle on the lower needle dial to form the upper single-sided stitch;   needle weaving the spandex filament and the nylon simultaneously with the needle on the lower needle dial without weaving with the needle on the upper needle dial to form the lower single-sided stitch;   weaving to form the stitch structure including the needle-containing double-sided stitch, the upper single-sided stitch and the lower single-sided stitch.   
     
     
         16 . A high-elastic viscous weft-knitted fabric prepared by the method for preparing high-elastic viscous weft-knitted fabric according to  claim 3 . 
     
     
         17 . The high-elastic viscous weft-knitted fabric as claimed in  claim 16 , wherein the high-elastic viscous weft-knitted fabric is a double-sided high-elastic viscous weft-knitted fabric with nylon on one side and spandex on the other side. 
     
     
         18 . An application of the high-elastic viscous weft-knitted fabric claimed in  claim 16 , wherein the high-elastic viscous weft-knitted fabric is used for manufacturing of high-elastic underwear, strapless dress underwear, body-shaping underwear, sports underwear, swimwear, brassiere inner lining, brassiere flank, brassiere strap, lovers' clothes and body-supporting belt. 
     
     
         19 . A lady brassiere inner lining comprising the high-elastic viscous weft-knitted fabric claimed in  claim 3 . 
     
     
         20 . The lady brassiere inner lining as claimed in  claim 19 , wherein the side of the high-elastic viscous weft-knitted fabric with spandex is a skin-contacting side.