Basic information of PolyPropylene Stape Fiber

Introduction to PolyPropylene Fiber (PP fiber)

Polypropylene fiber is the commercial name of polypropylene fiber, it is made of propylene as raw material by polymerization, melt spinning fiber. Polypropylene fiber officially began industrial production in 1957, is a rising star in synthetic fiber. Because polypropylene has the production process is simple, the product is cheap, the strength is high, the relative density is light and so on advantage, so polypropylene develops very quickly. Polypropylene is currently the fourth largest variety of synthetic fibers.

Polypropylene production includes short fiber, filament and split film fiber. Polypropylene film fiber is made by first making a film of polypropylene and then stretching the film to split it into a network of fibrils. Polypropylene fiber is widely used in manufacturing industrial fabrics and nonwoven fabrics. Such as carpets, industrial press cloth, ropes, fishing nets, building reinforcement materials, oil absorption blankets and decorative fabrics. In the civil aspect, polypropylene fiber can be pure spinning or with wool, cotton or viscose fiber to make a variety of fabrics. In addition, polypropylene film fibers can be used as packaging materials.

The main physical and chemical properties of polypropylene fiber

1. Form: The longitudinal plane of pp is straight and smooth, and the cross section is circular

2. The density of: Polypropylene fiber is the biggest advantage of light texture, its density is only 0.91g/cm3 is the most light density of common chemical fiber varieties, so the same weight of polypropylene fiber than other fibers to get a higher coverage.

3.Strong stretching

Pp has high strength, large elongation, high initial modulus and good elasticity. So polypropylene has good wear resistance. In addition, the wet strength of polypropylene is basically equal to the dry strength, so it is an ideal material for the production of fishing nets, ropes.

4. Hygroscopicity and coloration

The moisture absorption of pp is very small, almost no moisture absorption, and the moisture regain rate is close to zero under general atmospheric conditions. However, it has a core-absorption effect, and can transfer water vapor through the capillary tube in the fabric, but does not have any absorption effect. The dyeing property of polypropylene fiber is poor and the chromatogram is incomplete, but the method of original solution coloring can be used to make up the deficiency.

5. Acid and alkali resistance

Polypropylene fiber has a better resistance to chemical corrosion, in addition to the concentrated nitric acid, concentrated caustic soda, polypropylene acid and alkali resistance is good, so it is suitable for filtration materials and packaging materials.

6. Light fastness, etc

Polypropylene fiber light resistance is poor, thermal stability is also poor, easy aging, ironing resistance. However, the anti-aging property can be improved by adding anti-aging agent to the spinning process. In addition, polypropylene has good electrical insulation, but it is easy to produce static electricity during processing.

Usage and application

 Specification Cross-section Usage
 1.5 den / 38mm popular round cotton spinning system
 2.2 den / 38mm round wool spinning system
 2.5 den / 65mm round wool spinning system
 3.0 den / 65mm popular round wool spinning system
 3.5 den / 102mm round carpet yarn, knitting yarn,
wool yarn, artifical fur yarn
 4.0 den / 102mm popular round knitting yarn
 5.0 den / 102mm round carpet yarn, knitting yarn
 5.0 den / 51mm popular round artifical fur yarn
 6.0 den / 102mm popular round carpet yarn
 8.0 den / 102mm popular round carpet yarn
 10.0 den / 102mm round carpet yarn
 3.0 den / 65mm flat carpet yarn
 3.0 den / 102mm flat carpet yarn


Viet Nam Poly propylene Staple Fiber

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