- Polypropylene FDY ne...2026/4/7
- Polypropylene FDY ne...2026/3/30
- Trend Forecast for t...2026/3/30
- End-of-Spring Warmth...2026/3/23
- The market size of t...2026/3/16
How to judge whether the quality of PP Profiled Yarn is passed? Let's learn some identification techniques.
As we all know, in the inspection of yarn quality indicators, the appearance of quality has always been the top priority, in addition to the specifications of the yarn itself, the color, feel, gloss and the surface of the yarn are also selected for fine denier polypropylene yarn The essential. We often say that there are many kinds of enamel on the surface of the yarn, which is what we often call "the veils." When selecting fine-denier polypropylene yarns, the visual appearance method is generally adopted, and the polypropylene yarns whose quality is not good may have problems such as white stars, sorghum, and cross-over.
White star refers to the appearance of white irregular ball on the PP Profiled Yarn. The phenomenon of sorghum is not easy to find in the pure color polypropylene yarn, and it needs to be obvious after dyeing. Crossing refers to the appearance of irregular patterns on the surface of the yarn. The problem that arises above is the selection of the elements of the yarn.
The following is a brief description of the characteristics of PP Profiled Yarn:
Fiber type: bundled monofilament Density: 0.91g/m
Fiber fineness: 30D—300D Melting point: 165°C-175°C
Breaking strength: ≥350Mpa Burning point: 590°C
Length of break: 15%-20% Fiber size: 3-60mm
Modulus of elasticity: ≥3500Mpa Acid and alkali resistance: strong
Cross-sectional shape: O-type or Y-type Water absorption: 0.1%
In the selection of PP Profiled Yarn, if the appearance quality meets the standard and there is no yarn defect, refer to the general chemical properties of the polypropylene yarn indicated in the above list.
Have you learned how to identify the quality of PP Profiled Yarn?
