This standard specifies the testing method of linear density of filament yarn (multifilament yarn and single yarn) like polyester (polyester fiber), polyamide (chinlon), polypropylene (polypropylene fiber) and cellulose man-made fiber.
This standard is applicable to linear density testing of filament yarn extracted from package or fabric, and serves as reference for fold yarn and cable.
This standard is not applicable to filament yarn with elongation greater than 0.5% where the tension is increased from to 0.05cN/dtex to 0.1cN/dtex.
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Linear Density Testing of Multifilament Yarn
5 Single Yarn Linear Density Testing (Multifilament Yarn Number Determination)
6 Calculation Result
7 Data Rounding-off
8 Allowable Tolerance
9 Testing Report
Appendix A (Informative) Rapid Conditioning Method
Appendix B (Informative) Calculation Method for Pre-tension
Appendix C (Normative) Statistics: Terms and Calculation
