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Complex polyamide yarns for trocot industry
COMPLEX POLYAMIDE YARNS FOR TRICOT INDUSTRY

3,3 tex intermingled dull; 5,0 tex intermingled; 6,7 tex intermingled dull; 3,3 tex; 5,0 tex; 6,7 tex till 30 tw/m; 10,0 tex; 15,6 tex till 30 tw/m. They are meant for production of warm clothes (coats, costumes, sweaters and others) for sports, curtain and other tricot articles.

Physico-mechanical indexes to complex polyamide yarn with low twisting - 3,3; 5,0; 6,7; 10,0; 15,6 tex
(TU U 6-00204048.144-2000)
Index name Norm for yarn
3,3; 5,0; 6,7; 10,0; 15,6 tex
Highest quality First quality Second quality
1. Specific tearing force, mN/tex, not less 372 353 353
2. Yarn lengthening at break, % 40,0±5,0 41,0±5,0 42,0±5,0
3. Coefficient of variation at yarn lengthening at break, %, not more 15,0 15,0 15,0
4. Deviation of conditioned linear density from nominal one, %
for linear density, 15,6 tex
2,5
2,5
2,5
4,0
3,5
4,5
5. Coefficient of variation at linear density, %, not more
for yarn 15,6 tex
2,0
3,0
3,0
5,0
3,5
6,0
6. Twists number per 1 m of yarn, not more 30 30 30
7. Mass share of spin finish, % 0,6±1,3 0,6±1,3 0,6±1,3
8. Mass share of low-molecular substances (LMS), %, not more 3,8 3,8 3,8
9. Linear shrinkage of yarn, %, not more 16,0±1,5 16,0±1,5 16,0(+2,5;-1,5)
10. Filaments number in complex yarn (3,3 tex - 6;8, 5 and 6,7 tex - 12;14, 10 and 15,6 tex - 24;28)
11. Yarn winding is on ISO-ІІ, ISO-І, BP-340 or cops-305 (KV-150-I4) with the mass from 600 till 2600 g.
Physico-mechanical indexes of complex polyamide yarn
Index name Norm for yarn
Complex Monofilament
Sort B Sort А Sort B Sort А
3,3; 6,7; 5 tex 15,6 tex 1,67; 2,2 tex 2,2 tex 3,3 tex
Highest quality 1 st quality Highest quality 1 st quality Highest quality 1 st quality Highest quality 1 st quality Highest quality 1 st quality
1. Specific (relative) tearing force, cN/tex, not less 39,2 39,2 37,3 36,3 44,1 44,1 44,1 41,2 44,1 41,2
2. Relative lengthening at break, % 31,0±3,0 36,0±5,0 29,0±3,0 37,0±4,0 40,0±5,0
3. Coefficient of variation at lengthening, %, not more 13,0 14,0 15,0 15,0 13,0 14,0 16,0 18,0 16,0 19,0
4. Relative deviation of conditioned linear density from nominal one, % ±2,5 ±2,5 ±3,5 ±2,5 ±2,5 ±3,0 ±2,5 ±3,0
5. Coefficient of variation at linear density measured on specific yarn parts with the length 1 m, %, not more 2,5 3,0 - - 3,0 3,5 3,0 3,5 3,5 3,8

100 m of curls, %, not more - - 3,0 3,5 - - - - - -

Twists number per 1 m of yarn 200±10
300±20
100±15 - - - - - -
6. Winding density, g/cm 3
for 1,67 tex
0,74±0,10
-
0,74±0,10
-
0,74±0,10
0,60±0,10
0,74±0,10
-
0,74±0,10
-
7. Mass share of spin finish, %:
in bobbins
in cops


3,0±1,0
-


2,0±1,0
-


2,0±1,0
-


2,0±1,0
1,2±0,8


2,0±1,0
1,5±1,0
8. Linear shrinkage of yarn, % not more 7,0 14,5±1,5 not more 7,0 14,5±1,0 15,0±2,0
9. Mass share of low-molecular substances(LMS), %, not more for yarn, produced on home spinning machines - - - - - - - - 3,8
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