IP Library Granted Patent US 9,797,072
Granted Patent B2
US 9,797,072 · App. 14/476,933 · Granted Oct 24, 2017

Method of manufacturing fraying-free cotton elastane weft knit fabric

Inventors: Haritha Ranawaka (Avissawella, LK); Somasiri Manage (Avissawella, LK); Hareendra Indiwara (Avissawella, LK); Asanka Rodrigo (Avissawella, LK)
Assignee: Textured Jersey Lanka PLC
D04B1/18D02G1/02D02G3/328D10B2201/02
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Quick Facts
Patent No.
US 9,797,072
App. No.
14/476,933
Granted
Oct 24, 2017
Kind
B2
Abstract

This invention is related to a method of manufacturing a cotton weft knit fabric that is resistant to fraying, curling, and laddering. The unique fabrication method described herein generates a cotton fabric that resists edge fraying and curling when cut. As a result of the unique manufacturing method described herein, the typical garment hemming process typically used to prevent hemming and fraying in weft knit fabric is not required.

Claims (28)

1. A method of generating a fray-resistant and curl-resistant weft knit cotton-based blended fabric comprising:

a. providing a very fine cotton yarn with a count between 80 ne and 100 ne and a twist factor between 3.5 and 4.0;

b. providing a secondary fiber yarn with a linear mass density between 17 and 22 decitex;

c. interlock knitting said very fine cotton yarn and said secondary fiber yarn to create a blended fabric such that said very fine cotton yarn makes up between 85% and 90% by weight of said fabric and said secondary fiber yarn makes up between 10% and 15% by weight of said blended fabric; and

d. pre-setting said blended fabric at a temperature between 180° C. and 205° C.

2. The method of claim 1 wherein said very fine cotton yarn has a count of 80 ne.

3. The method of claim 2 wherein said secondary fiber yarn comprises elastane yarn.

4. The method of claim 3 wherein said elastane yarn has a linear mass density of 22 decitex.

5. The method of claim 4 wherein said very fine cotton yarn makes up 88% of said blended fabric and said secondary fiber yarn makes up 12% of said blended fabric.

6. The method of claim 5 wherein said pre-setting occurs at a temperature of 200° C.

7. The method of claim 6 wherein the curing hold time of said pre-setting is between 15 and 25 seconds.

8. The method of claim 7 wherein said blended fabric is additionally dyed and washed.

9. The method of claim 1 wherein said blended fabric has a knitting stitch length of 2.55 millimeters.

10. The method of claim 1 wherein the tension of said very fine cotton yarn is between 2 and 3 g.

11. The method of claim 1 wherein the tension of said secondary fiber is between 5 and 6 g.

12. The method of claim 1 wherein the weight of said blended fabric is between 175 and 185 grams per square meter.

13. The method of claim 1 wherein the width of said blended fabric is between 105 and 115 cm.

14. The method of claim 1 wherein said blended fabric has between 55 and 60 wales per inch.

15. The method of claim 1 wherein said blended fabric is steamed and compacted before being pre-set.

16. The method of claim 1 wherein said blended fabric is not stretched before presetting.

17. The method of claim 8 wherein said blended fabric width is 127 cm.

18. The method of claim 8 wherein said blended fabric width is 122 cm.

19. The method of claim 8 wherein said blended fabric width is 117 cm.

20. A method of generating a fray-resistant and curl-resistant weft knit cotton-based blended fabric comprising:

a. providing a very fine cotton yarn with a count between 60 ne and 100 ne and a twist factor between 3.2 and 4.0;

b. providing a secondary fiber yarn with a linear mass density between 17 and 44 decitex;

c. interlock knitting said very fine cotton yarn and said secondary fiber yarn to create a blended fabric such that said very fine cotton yarn makes up between 70% and 90% by weight of said fabric and said secondary fiber yarn makes up 10% and 30% by weight of said blended fabric; and

d. pre-setting said blended fabric at a temperature between 180° C. and 205° C.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2017
From: RANAWAKA, HARITHA; MANAGE, SOMASIRI; INDIWARA, HAREENDRA; RODRIGO, ASANKA
To: TEXTURED JERSEY LANKA PLC
Reel/Frame 043371/0726 →
CHANGE OF NAME Recorded Aug 23, 2017
From: TEXTURED JERSEY LANKA PLC
To: TEEJAY LANKA PLC
Reel/Frame 043647/0436 →
Continuity (2)
Provisional Application 61873413 · Sep 4, 2013
Related Publication 20150059137A1 · Mar 5, 2015