Controlling the spinning temperature is one of the keys to producing polypropylene staple fiber

Polypropylene staple fiber has a high spinning temperature (above 300°C), and the spinning temperature of various specifications of materials varies greatly. Therefore, the selection and control of the temperature of polypropylene staple fiber is very important.

The spinning temperature of polypropylene staple fiber is too high. Except for possible hair breakage, the main performance is that the strength of the finished product will be significantly reduced, and the post-stretching will also be abnormal.

If the spinning temperature of the polypropylene staple fiber is controlled too low, in addition to the possibility of hard ends and melt cracks, it will also deteriorate the stretching performance, or even fail to stretch, and be forced to reduce the stretching ratio or stretch the filament Too much retraction causes too much elongation of the finished product.

In addition to empirical observation, the spinning temperature control mainly depends on testing the viscosity average molecular weight of the oil-free yarn. Under normal circumstances, the thermal insulation zone has the greatest impact on polymer degradation. Therefore, changing the temperature in this zone will change the molecular weight of the oil-free silk faster. Controlling the spinning temperature is one of the keys to the production of polypropylene staple fibers.

Haian Qinfeng Chemical Fiber Co., Ltd. specializes in the production and sales of polypropylene staple fiber, PP staple fiber, polyester staple fiber, functional polypropylene staple fiber, functional polyester staple fiber, and hydrophilic polyester staple fiber. Our company mainly produces polypropylene staple fiber and polyester staple fiber: specifications 1.5D to 200D, length 5-150mm, product color sky blue, red, yellow, black, etc., can be customized. Polypropylene staple fiber and polyester staple fiber are rich in variety, support color to map or sample customization, fully meet your individual needs.

If you want to know more product information, please contact: Mr. Qian 13962787918, 13813743991 Website: http://www.glory-fiber.com/