Structure and production process of polypropylene hollow filament!

polypropylene hollow filament is a kind of chemical fiber with a hollow structure made from polypropylene as raw material.

The following is a detailed introduction:

Structure and production process

Structural features: The polypropylene hollow filament has a hollow center inside, similar to a small tube. Its cross-sectional shapes are diverse, such as circular and elliptical. This hollow structure endows the fibers with unique properties.

Production process: Generally, the melt spinning method is adopted. Polypropylene is used as the raw material. Chips with a higher melt index and a wider molecular weight distribution are selected. After drying and melting, they are extruded through a specially designed spinneret (such as a circular hollow C-shaped spinneret), and then processed through asymmetric cooling and forming, stretching, and curling.

Performance characteristics

Lightweight: Polypropylene itself has a low specific gravity, weighing only 3/5 of cotton. The fabric made from it is light, comfortable, and easy to wear and use.

High strength: It has a high breaking strength and wear resistance. The ropes, fishing nets, filter cloths and other products made from it are sturdy and durable.

Corrosion resistance: It has excellent resistance to acids, alkalis and other chemical substances, and is not prone to corrosion. It can be used for industrial applications in harsh environments.

Good thermal insulation: The hollow structure can contain a large amount of still air. Air is a poor conductor of heat, so polypropylene hollow filament has good thermal insulation performance and is suitable for making winter clothing and thermal insulation filling materials.

Easy to clean: It does not absorb moisture, stains are not easy to adhere, dries quickly after washing, and is not easy to fade, which can maintain the bright color of the fabric.

Application fields of polypropylene hollow filament

In the field of textile and garment: It can be used to make winter clothing, quilts and padding, etc. Its warmth retention, fluffiness and lightness make it an ideal material for making thermal underwear, sportswear, casual wear, etc. It can also be used in knitting processing to make shirts, socks, etc.

In the field of home decoration: It is often used in the production of various craft fabrics, decorative fabrics, curtains, sofa covers, carpets, etc., and can add beauty and comfort to the home environment.

In the industrial field, it can be made into ropes, Marine cables, fishing nets, industrial filter cloths, etc. It can also be used to make luggage straps, safety nets, geotextiles, etc. It has wide applications in construction, transportation, agriculture, fishery and other industries.

Shanghai Jinci Industrial Co., Ltd. was established in March 2006. It is a large-scale physical company specializing in the production and sales of polypropylene (PP yarn). The company's products include polypropylene general-strength filament, polypropylene high-strength filament, polypropylene lightweight filament, polypropylene twisted filament, polypropylene hollow filament, polypropylene fluorescent filament, polypropylene luminous filament, polypropylene flame-retardant filament, polypropylene hollow filament, etc.