Polypropylene light body silk production process steps!

The production process of Polypropylene light body silk (or polypropylene hollow filament) mainly includes the following key steps:

First, raw material preparation

Polypropylene selection: The selection of high-quality polypropylene (PP) particles as raw materials is the basis for ensuring the quality of polypropylene light body silk.

Additive mixing: According to the needs, the appropriate amount of stabilizer, antioxidant, pigment and other additives are added to the polypropylene particles to improve the performance and appearance of the polypropylene light body silk.

Two, melt extrusion

Melt: the polypropylene particles into the melt extruder, through high temperature heating to melt the polypropylene particles into liquid state.

Extrusion: In the molten state, polypropylene is extruded through the die of the extruder to form continuous strips of silk.

Third, spinning and drawing

Spinning: The extruded strips are cooled and cured to form a preliminary polypropylene filament.

Stretching: The initial polypropylene wire is stretched to improve its strength and elasticity. During the stretching process, the internal structure of the polypropylene fiber changes, forming a hollow structure, which reduces weight and improves thermal performance.

Fourth, heat treatment and shaping

Heat treatment: The stretched polypropylene fiber is heat treated to further stabilize its structure and properties.

Shaping: Through the shaping equipment, the shape and size of the polypropylene wire is fixed to ensure that it is not easy to deform during use.

5. Winding and packaging

Winding: The shaped Polypropylene light body silk is wound into a certain length of the drum, so as to facilitate subsequent processing and use.

Packaging: Wrap the rolled Polypropylene light body silk to protect it from moisture, contamination and damage.

6. Quality control and testing

In the whole production process, it is necessary to carry out strict quality control and inspection on all aspects of raw materials, melt extrusion, spinning, drawing, heat treatment, shaping, winding and packaging. This includes the purity of the raw material, the temperature and pressure of melting extrusion, the speed and tension of spinning, the multiple and speed of drawing, the temperature and time of heat treatment and other parameters of monitoring and adjustment. At the same time, it is also necessary to test the appearance, strength, wear resistance, corrosion resistance and other aspects of the finished product to ensure that it meets the quality standards.

To sum up, the production process of Polypropylene light body silk is a complex and fine process, which requires strict control of the parameters and quality of each link to ensure the performance and quality of the final product.

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.