Yarn Part 6: Quality and Technical Requirements for Combed Polyester-cotton Blended Natural Color Yarn
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| Project Spinning Yarn | Combed cotton-polyester blended chemical fiber fabric natural yarn (cotton content 50%~60%) | ||||||
| Single yarn (6~6.5tex) | Strands (6tex×2~7.5tex×2) | ||||||
| Excellent product | First-class product | Second-class product | Premium product | First-class product | Second-class product | ||
| Single yarn (thread) strength coefficient of variation CV (%) | 16.5 | 20.5 | 23.5 | 11.0 | 13.5 | 16.0 | |
| Coefficient of variation of weight per 100 meters CV (%) | 2.5 | 3.5 | 4.5 | 2.0 | 3.0 | 4.0 | |
| Evenness | Black board dryness uniformity ratio of 10 boards (excellent: one: two: three) is not less than | 7:3:0:0 | 0:7:3:0 | 0:0:7:3 | |||
| The coefficient of variation CV (%) of evenness is not greater than | 19.5 | 22.5 | 24.5 | ||||
| The coefficient of variation CV (%) of excellent line dryness uniformity is not greater than | 13.5 | ||||||
| The number of neps on the blackboard (grain/g) is not more than | 20 | 35 | 50 | 14 | 23 | 37 | |
| No more than 100,000 meters of yarn defects | 30 | ||||||
| Breaking strength (cN/tex) is not less than | 12.0 | 14.7 | |||||
| 100-meter weight deviation range (%) | ±2.5 | ±2.5 | |||||
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Through the above review of “Yarn (6): Combed polyester-cotton blended yarn”owtext 0.5pt solid; border-right: windowtext 0.5pt solid” class=”xl65″ width=”216″ colspan=”3″>
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Disclaimer:
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