USRE45875EActiveUtility

Method of producing a low twist towel

80
Assignee: LOFTEX USA LLCPriority: Sep 25, 2007Filed: Oct 27, 2014Granted: Feb 2, 2016
Est. expirySep 25, 2027(~1.2 yrs left)· nominal 20-yr term from priority
Inventors:Hongxing Wang
D03D 27/00D03D 15/00A23B 4/08D01H 7/02D01H 1/11D01H 7/00D06B 3/10D03D 15/0094D03D 23/00D02G 3/28A23L 1/3182D03D 1/0017D03D 15/573D03D 15/41D03D 15/217D06P 1/6735D06M 11/40D06P 1/67333D10B 2401/14D06M 11/38D03D 15/43D10B 2401/062D10B 2509/026D10B 2201/02C11D 3/2075
80
PatentIndex Score
2
Cited by
21
References
41
Claims

Abstract

The invention relates to a method for producing a towel, specifically a low twist towel, comprising the following steps: Z twisting a thick yarn and separately Z twisting a fine count yarn; unevenly S twisting the Z-twisted yarns to make the volume of the thick yarn more than that of the fine count; weaving the yarn to produce a fabric; processing the fabric with hot water to reduce inner tension in the yarn and make the fabric become fluffy. Fabric produced by this method can solve the dependency on PVA, reduce energy consumption and material consumption, and prevent water pollution. This method for producing a low twist towel is environmentally friendly, healthy, and energy saving.

Claims

exact text as granted — not AI-modified
I claim: 
     
       1. A method of producing a low twist towel, comprising the steps of:
 (a) Z twisting a thick yarn and separately Z twisting a fine count yarn;   (b) unevenly S twisting the Z-twisted thick yarn into the Z-twisted fine count yarn, such that the volume of thick yarn is higher than the volume of fine count yarn, to produce a 2-ply yarn;   (c) weaving the 2-ply yarn to produce a fabric that is free of polyvinyl alcohol fibers;   (d) contacting the fabric with hot water to reduce the inner tension of the yarn; and   (e) producing a low twist towel, wherein the thick yarn and the fine count yarn are cotton yarns.   
     
     
       2. The method of  claim 1 , wherein the thick yarn is a 16s-2s count yarn. 
     
     
       3. The method of  claim 2 , wherein the thick yarn is 12s count yarn. 
     
     
       4. The method of  claim 1 , wherein the fine count yarn is a greater than or equal to 60s count yarn. 
     
     
       5. The method of  claim 4 , wherein the fine count yarn is 60s count yarn. 
     
     
       6. The method of  claim 1 , wherein the thick yarn is 12s count yarn and the fine count yarn is 60s count yarn. 
     
     
       7. The method of  claim 1 , wherein the weight ratio of thick yarn to fine count yarn in step (a) is from about 3.5:1 to about 12:1. 
     
     
       8. The method of  claim 7 , wherein the weight ratio is 12:1. 
     
     
       9. The method of  claim 1 , wherein the volume ratio of thick yarn to fine count yarn in step (b) is from about 1.1:1 to about 1.3:1. 
     
     
       10. The method of  claim 9 , wherein the volume ratio is 1.2:1. 
     
     
       11. The method of  claim 1 , wherein step (d) comprises contacting the fabric for about 20-60 minutes with hot water having a temperature of about 80-95° C. 
     
     
       12. The method of  claim 1 , wherein step (d) comprises contacting the fabric for 60 minutes with hot water having a temperature of 85-92° C. 
     
     
       13. The method of  claim 1 , further comprising, after step (d), one or more steps selected from the group consisting of bleaching, dyeing, and final finishing. 
     
     
       14. The method of  claim 13 , wherein the method comprises a bleaching step comprising contacting the fabric with a solution comprising NaOH and a fine finishing agent. 
     
     
       15. The method of  claim 14 , wherein NaOH is present in a concentration of 5-15 g/L. 
     
     
       16. The method of  claim 13 , wherein the method comprises a final finishing step comprising contacting the fabric with a solution comprising a hydrophilic softener. 
     
     
       17. The method of  claim 16 , wherein the hydrophilic softener is selected from the group consisting of: crodamide ramification, 2.5-3.8% OWF; and cellulose, 0.8-1% OWF. 
     
     
       18. A low twist towel manufactured by a method that comprises the steps of: (a) Z twisting a thick yarn and separately Z twisting a fine count yarn; (b) unevenly S twisting the Z-twisted thick yarn into the Z-twisted fine count yarn, such that the volume of thick yarn is higher than the volume of fine count yarn, to produce at least a 2-ply yarn; (c) weaving the at least 2-ply yarn to produce a fabric; (d) contacting the fabric with hot water to reduce the inner tension of the at least 2-ply yarn; and (e) producing a low twist towel, wherein the thick yarn and the fine count yarn are cotton yarns, wherein the volume ratio of thick yarn to fine count yarn in step (b) is from about 1.1:1 to about 1.3:1. 
     
     
       19. The low twist towel of claim 18, wherein the volume ratio is 1.2:1. 
     
     
       20. The low twist towel of claim 32, wherein the weight ratio is 8:1. 
     
     
       21. A low twist towel manufactured by a method that comprises the steps of: (a) Z twisting a thick yarn and separately Z twisting a fine count yarn; (b) unevenly S twisting the Z-twisted thick yarn into the Z-twisted fine count yarn, such that the volume of thick yarn is higher than the volume of fine count yarn, to produce at least a 2-ply yarn; (c) weaving the at least 2-ply yarn to produce a fabric; (d) contacting the fabric with hot water to reduce the inner tension of the at least 2-ply yarn; and (e) producing a low twist towel, wherein the thick yarn and the fine count yarn are cotton yarns, and wherein the weight ratio of thick yarn to fine count yarn in step (a) is 12:1. 
     
     
       22. The low twist towel of claim 21, wherein the volume ratio of thick yarn to fine count yarn in step (b) is from about 1.1:1 to about 1.3:1. 
     
     
       23. The low twist towel of claim 22, wherein the volume ratio is 1.2:1. 
     
     
       24. A low twist towel manufactured by a method that comprises the steps of: (a) Z twisting a thick yarn and separately Z twisting a fine count yarn; (b) unevenly S twisting the Z-twisted thick yarn into the Z-twisted fine count yarn, such that the volume of thick yarn is higher than the volume of fine count yarn, to produce at least a 2-ply yarn; (c) weaving the at least 2-ply yarn to produce a fabric; (d) contacting the fabric with hot water to reduce the inner tension of the at least 2-ply yarn; and (e) producing a low twist towel, wherein the thick yarn and the fine count yarn are cotton yarns, and wherein the weight ratio of thick yarn to fine count yarn in step (a) is 8:1. 
     
     
       25. The low twist towel of claim 24, wherein the volume ratio of thick yarn to fine count yarn in step (b) is from about 1.1:1 to about 1.3:1. 
     
     
       26. The low twist towel of claim 25, wherein the volume ratio is 1.2:1. 
     
     
       27. The low twist towel of claim 18, wherein the thick yarn is a 16s-2s count yarn. 
     
     
       28. The low twist towel of claim 27, wherein the thick yarn is 12s count yarn. 
     
     
       29. The low twist towel of claim 18, wherein the fine count yarn is a greater than or equal to 60s count yarn. 
     
     
       30. The low twist towel of claim 29, wherein the fine count yarn is 60s count yarn. 
     
     
       31. The low twist towel of claim 18, wherein the thick yarn is 12s count yarn and the fine count yarn is 60s count yarn. 
     
     
       32. The low twist towel of claim 18, wherein the weight ratio of thick yarn to fine count yarn in step (a) is from about 3.5:1 to about 12:1. 
     
     
       33. The low twist towel of claim 32, wherein the weight ratio is 12:1. 
     
     
       34. The low twist towel of claim 18, wherein the volume ratio is 1.2:1. 
     
     
       35. The low twist towel of claim 18, wherein step (d) comprises contacting the fabric for about 20-60 minutes with hot water having a temperature of about 80-95° C. 
     
     
       36. The low twist towel of claim 18, wherein step (d) comprises contacting the fabric for 60 minutes with hot water having a temperature of 85-92° C. 
     
     
       37. The low twist towel of claim 18, further comprising, after step (d), one or more steps selected from the group consisting of bleaching, dyeing, and final finishing. 
     
     
       38. The low twist towel of claim 37, wherein the method comprises a bleaching step comprising contacting the fabric with a solution comprising NaOH and a fine finishing agent. 
     
     
       39. The low twist towel of claim 38, wherein NaOH is present in a concentration of 5-15 g/L. 
     
     
       40. The low twist towel of claim 37, wherein the method comprises a final finishing step comprising contacting the fabric with a solution comprising a hydrophilic softener. 
     
     
       41. The low twist towel of claim 40, wherein the hydrophilic softener comprises cellulose, 0.8-1% OWF.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.