Polypropylene FDY yarn in early April! 

On the spinning lines in April, Polypropylene FDY yarn is being integrated into more applications with its stable quality. 

Polypropylene FDY, or polypropylene fully stretched filament, is formed through a single step of spinning and hot roller stretching. The fiber fineness can reach 50D to 600D, with a breaking strength above 4.0 cN/dtex and a breaking elongation controlled within the range of 20% to 40%. Due to the density of polypropylene being only 0.91 g/cm³, under the same specifications, its weight per meter is approximately 30% lighter than polyester and 45% lighter than nylon. 

This material property brings clear practical value. In the field of luggage straps, polypropylene FDY yarn gives the straps the characteristics of light weight and high strength, with good wear resistance and color fastness up to level 4 or above; in industrial fabrics, filter fabrics and geotextiles have stable acid and alkali resistance and are suitable for various working environments; in shoe lining fabrics, the hydrophobic property of the fibers makes the products less prone to water absorption and mold, maintaining dryness. 

Outdoor equipment is also an important application direction for polypropylene FDY yarn. Components such as tent webbing, backpack shoulder straps, and sleeping bag zipper tapes benefit from the lightweight nature of the material, reducing the load. Additionally, the capillary effect is extremely low, making them less likely to increase in weight in humid conditions. 

The production process has become mature. The colored filament can be directly spun with color masterbatches added online, eliminating the post-processing dyeing step and reducing water consumption and emissions. The heat setting process ensures the stability of fiber curling, and during the subsequent weaving process, the unwinding is smooth and the breakage rate is kept at a low level. 

In early April, it was the start-up period for the development of spring and summer products. Polypropylene FDY yarn offers a lightweight yet durable material option for belts, fabrics, and industrial textiles - simple, practical, and widely applicable.