T/SCSKJQYLHH 25-2024 Axial diffuse extinction PET fiber

Scope

Main Technical Content: 5.1.1 General requirements shall comply with the national or industry standards related to fibers. They shall be determined through consultation between the supplier and the customer based on the requirements of the downstream products. They shall be implemented in accordance with GB/T 14460. 5.1.2 The cross-sectional shape and asymmetry shall be determined through consultation between the supplier and the customer. The cross-sectional shape shall be observed under a microscope at a magnification of ≥200 times; the asymmetry test shall be conducted in accordance with FZ/T 50002. 5.2 Physical and mechanical properties shall comply with Table 1. Table 1: Physical and Mechanical Properties of Aspherical Reflection-Extinction PET Fibers Grade (AA) Grade (A) Grade (B) Test Method Line Density Deviation Rate (%) ±2.5 ±3.0 ±3.5 GB/T 14345 Line Density Variance Coefficient (CV value) ≤1.40 1.80 2.20 GB/T 14345 Breaking Strength (cN/dtex) ≥3.50 3.20 2.80 GB/T 14345 Breaking Strength Variance Coefficient (CV value) ≤6.0 9.0 12.0 Elongation at Breakage (%) M1 ± 3.0 M1 ± 5.0 M1 ± 7.0 Elongation at Breakage Variance Coefficient (CV value) ≤10.0 14.0 18.0 Curl Shrinkage (%) M2 ± 2.5 M2 ± 2.5 M2 ± 2.5 GB/T 6506 Curl Shrinkage Variance Coefficient (CV value) ≤9.0 15.0 18.0 Boiling Shrinkage (%) M3 ± 0.5 M3 ± 0.8 M3 ± 1.2 Dyeing Uniformity (Grey Card) ≥443 GB/T 6508 Oil Content (%) M4 ± 0.8 M4 ± 1.0 M4 ± 1.2 GB/T 6504 Network Density (pcs/m) M5 ± 10 M5 ± 20 M5 ± 30 FZ/T 50001 Curl Rate (%) ≥20.0 15.0 10.0 GB/T 14338 Note 1: M1 is the center value of elongation at breakage, which shall be determined through consultation between the manufacturer and the customer and shall not be arbitrarily changed once determined. Note 2: M2 is the center value of curl shrinkage, which shall be determined through consultation between the manuf

Development Information

Related Standards