Analysis of key steps of PP FDY yarn process flow!

‌ The process flow of PP FDY yarn ‌ mainly includes the following key steps:

‌ raw material treatment ‌ : The raw material of polypropylene filament is mainly propylene, which is liquefied by heating and pressure, and is treated with filtration to remove impurities and impure substances.

‌ polymerization ‌ : The treated propylene liquid enters the polymerization reactor, and the polymerization catalyst is added. The polymerization reaction is carried out under certain temperature and pressure to form polymer.

‌ spinning ‌ : After filtration and refining, the polymer solution is injected into the spinning machine. Through the stretching and thinning of the spinning machine, continuous and uniform fibers are formed.

‌ stretching ‌ : The spun polypropylene fiber is stretched by stretching equipment, the purpose is to increase the strength and wear resistance of the polypropylene fiber. During the stretching process, the polypropylene filament is heated and stretched to make its molecular chain more orderly.

‌ weaving ‌ : the stretched polypropylene fiber is woven by textile equipment and interwoven with other fibers to form textiles. The textile machine can be adjusted and changed as needed to manufacture different types and specifications of polypropylene textiles.

In addition, the production process of PP FDY yarn also involves melt temperature, spinning temperature, side blowing cooling, tensile temperature and speed, tensile multiple and distribution, winding tension and other aspects of control. These controls are essential to maintain stable melt pressure, uniform color and product quality ‌

Shanghai Jinci Industrial Co., Ltd, founded in March 2006, is a large entity company specializing in the production and sales of polypropylene fiber (PP yarn). The company's products include polypropylene general filament, PP high-strength yarn, polypropylene light body filament, polypropylene twist filament, polypropylene hollow filament, polypropylene fluorescent filament, polypropylene luminous filament, polypropylene flame retardant filament, polypropylene air variable filament, etc.