PP DTY yarn is crimped, and PP FDY yarn is straight.

The elongation and shrinkage of PP FDY yarn are two concepts. Elongation refers to the percentage of polypropylene filament elongation after being stressed; shrinkage refers to the percentage of the ratio of polypropylene filament to the original length after being heated.

Polypropylene is an important type of synthetic fiber. It is the Chinese trade name of synthetic fiber isotactic polypropylene fiber made from propylene, a by-product of petroleum refining. Also known as polypropylene fiber.

Shanghai Jinci Industrial Co., Ltd. was established in March 2006. It is a large-scale entity company specializing in the production and sales of polypropylene fiber (PP yarn). The company’s products include polypropylene fiber reinforced yarn, polypropylene high-strength fiber, polypropylene anti-aging yarn, Twisted yarn, polypropylene hollow yarn, polypropylene fluorescent yarn, polypropylene luminous yarn, polypropylene flame-retardant yarn, polypropylene air-changing yarn, etc.