GB/T 6505-2017 Translated English of Chinese Standard. (GBT 6505-2017, GB/T6505-2017, GBT6505-2017): Man-made Fiber - Test Method for Thermal Shrinkage of Filament Yarns (after treatment)https://www.chinesestandard.net, 2020 M11 6 - 30 pages This Standard specifies test methods for boiling water shrinkage and dry-hot air shrinkage of man-made filament yarns (after treatment) -- stranded filament method and single filament method. The stranded filament method provides two modes: manual measurement and instrument measurement; manual measurement shall be used when there is a dispute. This Standard is applicable to man-made fiber filament yarns with a linear density of less than 3,000 dtex. |
Contents
| 3 | |
Test Procedures | 11 |
Appendix A informative Structural Changes of This Standard Compared with | 17 |
normative Calculation Method for Increasing Test Quantity | 23 |
Common terms and phrases
accordance with Formula arithmetic mean value Aver Repea average values boiling water shrinkage bulk laboratory samples calculate the tension calculated in accordance clamp cN/dtex coefficient of variation Compared with ISO conduct equilibrium confidence interval conventional moisture regain described in 5.3 Drawn Yarn dry-hot air expressed in dtex Filament Linear Density filament-stranding rack FZ/T hot air temperature instrument measurement Jiangsu length L0 Limit r Limit lower end lower hook Man-made Filament Yarns manual measurement mesh bag multiple reels number of reels number of tests Nylon 66 Polypropylene relative humidity single filament method spandex filament yarn spandex measurement specified in 6.2.2 specimen in half standard atmosphere specified Standard Compared stipulations of 6.4.1 Stranded Filament Linear stranded filament method stretch Yarn Table F.2 Technical Differences tension per unit test specimen Testing Method thermal shrinkage rate thermal treatment unit linear density Value of Stranded vertical measuring scale water shrinkage rate Yarn Nylon Zhejiang