ASTM D6774-22
Standard Test Method for Crimp and Shrinkage Properties for Textured Yarns Using a Dynamic Textured Yarn Tester
| Označení normy: | ASTM D6774-22 |
| Vydáno: | 01.03.2022 |
| Status: | Active |
| Počet stran: | 6 |
| Sekce: | 07.02 |
| Označení: | crimp; residual fiber shrinkage; textured yarn; total contraction; |
| ASTM označení: | ASTM D6774 |
| Nahrazuje: | D6774-02R10 |
1.1 This test method covers the determination of crimp contraction, residual fiber shrinkage and their variability of all types of filament yarns (partially oriented yarn (POY), fully oriented yarn (FOY), flat yarns, textured and bulked continuous filament (BCF) carpet yarns) using an automated tester.
Note 1: For another method of testing crimp in textured yarns, refer to Test Method D4031.
1.1.1 This method may also be used for non-textured yarns.
1.2 This test method is limited to crimped, multi-filament yarns ranging from 22.0 dtex to 890 dtex (15 denier to 800 denier) and for BCF yarns from 890 dtex to 4200 dtex (800 denier to 3800 denier).
1.3 The values stated in SI units are to be regarded as standard. Inch-pound units in parentheses after SI units are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.