The production of polypropylene staple fiber is a process involving multiple steps and processes, the following is a detailed introduction to the production of polypropylene staple fiber:

The main raw material of polypropylene staple fiber is propylene. In the production process, propylene first needs to be vaporized, then cooled and vaporized to prepare for the subsequent polymerization reaction.

The pretreated propylene is polymerized, and the long chain molecule of polypropylene is formed by chemical bonding between propylene molecules through the property of addition polymerization. By controlling the reaction conditions (such as temperature, pressure, type of catalyst, etc.), polypropylene particles with different properties can be obtained. The polypropylene particles obtained by polymerization are further processed, such as granulation, in order to obtain polypropylene raw materials suitable for spinning.

Melt spinning is one of the key steps of polypropylene staple fiber production. In melt spinning, polypropylene particles are heated to a molten state and then extruded through a screw extruder. In the extrusion process, the polypropylene melt goes through the steps of metering, filtration, homogenization, etc., and finally reaches the spinneret for spinning. When spinning, the temperature of melt spinning is usually controlled at 220~280 ° C.

After cooling, oiling and other steps, the spun polypropylene filament strips are stretched and cut to obtain the required polypropylene staple fiber. The process of drawing and cutting has an important effect on the performance of polypropylene staple fiber, which can control its strength, elongation and other performance parameters.

Hubei Botao Synthetic Fiber Co., Ltd. has introduced a number of imported fiber production lines, with fixed assets exceeding 300 million yuan, an annual output of 100,000 tons of polypropylene staple fiber, 20,000 tons of polyester staple fiber, 10,000 tons of composite fiber, and an annual output value of over 800 million yuan. Focusing on the field of synthetic fiber for more than 20 years, Botao synthetic fiber has obtained excellent market results and extensive honors with the mentality of excellence and integrity development.