1. The two-step process route of polypropylene industrial yarn: first produce UDY or POY, and then carry out drawing and setting winding. , Due to the small investment and low production technology content, there are still many small and medium-sized enterprises in China that use this process route, but the technology is relatively backward, the area is large, the production cord strength is low, the product quality is unstable, and the consumption is large. The production cost is high, and new projects are no longer advocated and adopted.
2. One-step process route of polypropylene industrial yarn: It adopts one-step process of spinning, drawing, shaping and retraction, and winding. It has advanced technology, short process and small area. The production of silk has high strength and good quality. The above projects all adopt a one-step process route.
The specifications of polypropylene industrial yarn are 300D-5000D, and the color can be customized according to customer requirements. Polypropylene industrial yarn has the characteristics of anti-aging, acid and alkali resistance, heat shrinkage and small specific gravity (0.91), high breaking strength, low elongation, environmental protection and no pollution.
So polypropylene industrial yarn is widely used in fire hoses, suspenders, safety belts, conveyor belts, woven geotextiles, industrial threads, cables, industrial filter cloth, etc.
What are the production proces
