OBTAINING WARP KNIT FABRICS FROM COTTON YARN WITH WARP KNITTING MACHINES AND WARP KNIT FABRIC OBTAINED

Abstract

A method for obtaining terry or non-terry warp knit fabric with or without pile from 100% cotton yarns with increased elasticity and tensile strength due to modified torsion and twisting values, using warp knitting machines, intended to be used in the design of different constructions.

Claims

1. A method for obtaining warp knit fabric from cotton yarns in warp knitting fabrics, intended to be used in designs of different constructions, wherein; it comprises: a. using 80/2 Ne cotton yarn with increased elasticity and tensile strength through use of two or more multiple twisting cotton yarn as the warp yarn; b. using 16/1 Ne cotton yarn with increased strength through twisting two or more multiple twisting cotton yarn with thickness equal to 0.5 or less than 0.5 with PVA yarn as the pile yarn; c. using _20/2 Ne carded cotton obtained from two or more multiple twisting cotton yarn as the ground yarn and weaving the fabric in warp knitting machine; d. treating the obtained fabric with acid at 90 C. for 20 minutes and removing the PVA yarn from the fabric; and e. consequently, applying conventional bleaching and dying processes, process steps.

2. A method for obtaining warp knit fabric according to claim 1, wherein, in process step b, the tension created between the needle rail and the inlay rail is decreased using the elasticity of the PVA thread.

3. A method for obtaining warp knit fabric according to claim 1, wherein, in process step c, pile and terry warp knit fabrics are obtained by adding a pile plate to the warp knitting machine.

4. A method for obtaining warp knit fabric according to claim 1, wherein, in process step d, the mentioned acid is acetic acid or formic acid.

5. A warp knit fabric having a 100% cotton composition, obtained through the method of claim 1.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0059] FIG.-1: A detail view of the warp knit fabric.

[0060] FIG.-2: A detail view of the pile yarn and warp yarn positions in the warp knit fabric.

[0061] FIG.-3: A detail view of the warp yarn and ground yarn positions in the warp knit fabric.

[0062] FIG.-4: A schematic view of the manufacturing principle of the warp knit fabrics (spacer fabric) in double needle railed Raschel machines.

[0063] The drawings may not be up to scale and details not crucial for understanding the invention may have been omitted. Additionally, at least substantially identical elements or elements having at least substantial functions are denoted with the same number.

PARTS REFERENCES

[0064] 10. Warp knit fabric [0065] 11. Warp yarn [0066] 12. Pile yarn [0067] 13. Ground yarn [0068] 20. Double needle railed Raschel machine [0069] 21. 1.sup.st inlay rail [0070] 22. 2.sup.nd inlay rail [0071] 23. 3.sup.rd inlay rail [0072] 24. 4.sup.th inlay rail [0073] 25. 1.sup.st needle rail [0074] 26. 2.sup.nd needle rail

DETAILED DESCRIPTION OF THE INVENTION

[0075] The method for obtaining warp knit fabric (spacer fabric) (10) from cotton yarns in warp knitting machines is disclosed herein detailed description without limiting the scope of the invention.

[0076] The invention relates to a method for obtaining terry or non-terry warp knit fabric (spacer fabric) (10) with or without pile from 100% cotton yarns with increased elasticity and tensile strength due to modified torsion and twisting values, using warp knitting machines, intended to be used in the design of different constructions. A detail view of the warp knit fabric (10) is given in FIG. 1.

[0077] In weaving the warp knit fabric, 80/2 Ne combed cotton as the warp yarns (11), 20/2 Ne carded cotton as the ground yarns (13), and 16/1 Ne cotton as the pile yarns (12) are used. FIG. 2 shows a detail view of the position of the pile yarn (12) and warp yarn (11) in the warp knit fabric (10), and FIG. 3 shows a detail view of the position of the warp yarn (11) and the ground yarn (13) in the warp knit fabric (10).

[0078] While obtaining the pile yarn (12), cotton yarn is twisted in opposite direction with PVA (polyvinyl alcohol).

[0079] The warp knit fabric (10) of the invention is woven with raw yarns and white tops dyeing is applied. During the tops dyeing process, before the bleaching process, the fabric is treated with acid at 90 C. for 20 minutes. Thereby the PVA fiber is removed from the raw product. In FIG. 4, a schematic view of the manufacturing principle of the warp knit fabrics (spacer fabric) (10) in double needle railed Raschel machines is given.

[0080] A Method for Obtaining Warp Knit Fabric (Spacer Fabric) from 100% Cotton Yarns; [0081] 80/2 Ne cotton yarn with increased elasticity and tensile strength through use of two or more multiple twisting cotton yarn is used as the warp yarn (11), [0082] 16/1 Ne cotton yarn with increased strength through twisting two or more multiple twisting cotton yarn with thickness equal 0.5 or less than 0.5 with PVA yarn is used as the pile yarn ( 12), [0083] _20/2 Ne carded cotton obtained from two or more multiple twisting cotton yarn is used as the ground yarn (13) and the fabric is woven in warp knitting machine, [0084] The obtained fabric is treated with acid at 90 C. for 20 minutes and the PVA yarn is removed from the fabric, [0085] Consequently, the conventional bleaching and dying processes are applied and a warp knit fabric (10) composed of 100% cotton is obtained.

[0086] A feature of the invention is that acetic acid or formic acid may be used as the acid during removal of the PVA yarn from the obtained fabric.

[0087] A feature of the invention is that, during the step of obtaining pile yarn (12), the tension created between the needle rail and the inlay rail is decreased using the elasticity of the PVA thread.

[0088] A feature of the invention is that, it is possible to obtain pile and terry warp knit fabrics by adding a pile plate to the warp knitting machine used in the step of weaving the warp knit fabric.

[0089] Fabric Before the Dyeing Processes;

[0090] Width: 167 cm,

[0091] Weight: 380 g/m.sup.2

[0092] Fabric Before the Dyeing Processes;

[0093] Width: 175 cm,

[0094] Weight: 320 g/m.sup.2