F/R polyester filament fiber is made of phosphorus F/R polyester chips through melt spinning. Products include F/R polyester DTY and from 75d~300d /48f~192f. Products are featured for their stable quality and low denier difference, high intensity and even dyeing.
Quality standard parameters shown in following table:

Name A+ Level A Level Denier variation    %  ±  2.50 3.00 Linear density variation       %  ≤  0.90 1.50 Breaking extension ( %)   ±3.0 ±5.0 Breaking extension CV  (%)  ≤  9.00 13.0 Breaking strength    cN/dtex  ≥ 3.30 3.00 Breaking strength CV (%)  ≤  6.00 9.00 Curl shrinkage content     %   ±3.0 ±4.0 Curl shrinkage CV  (%)  ≤  7.0 15.0 Curl stability degree    % 65.0 45.0 Shrinkage in boiled water  (%)  ≤  ±0.5 ±0.8 dye uniformity (grey card) grade     ≥  4.0 4.0 Oil content     % ±0.8 ±1.0 entangling-degree     (points /m)  ±10 ±15 entangling-degree CV (%)    ≤  8.0

Note: 1. F/R polyester DTY is tested according to GB/T14460-2001. 2.P content of the F/R polyester filament fiber can be adjusted by customer's requirements.