Polypropylene has good processing properties, as in general thermoplastic resins, can be molded with injection molding, extrusion, blow molding, and spinning, etc., can also be welded, thermoformed, plated, and foamed, it can be carried out secondary Processing. Containers, tubes, sheets, films, flat wires, fibers, bottles, and various injection molding parts. Polypropylene fluidity is good, the softening point is high, low heat, so the molding cycle is shorter than the shortage of thermoplastic, and no drying is required before processing. The molding method has a certain relationship with different articles and the melt flow rate (MFR) of the selected resin.

The polypropylene staple fiber process seems simple and convenient, but in fact, it is a big impact on its production of finished products, such as the pretextile of polypropylene. Is it so simple if the process of polypropylene staple fiber is really what you see?

Dellarous polypropylene staple fibers are too large, which will bring a lot of harm. And in the blending, the strength of the yarn will also affect.

The strength of the yarn after the blending, such as the quality indicator of pure polypropylene, 50% cotton blend indicator 1950, polypropylene 50% cotton blend indicator 2193, 215 cotton quality index 2336. It can be seen from the above data, and the pure splicing gauze is high, which is much higher than the cotton, but it is not as good as cotton, which is not as good as cotton. Although it may be related to the unevenness of the polypropylene short fiber and cotton. Decanpropylene short fiber is difficult to control the length, so it is also a comparative test manufacturer than a simple step.

The appearance of polypropylene staple fibers seems to be a cotton, soft and has certain elasticity, polypropylene staple fiber is large, it is easy to control in production, and the elongation will exceed 60%, which except for its polypropylene macromolecule In addition to structural factors, it may also be inadequate during the production process.

Because the filament is not uniform, improve the tensile ratio is easy to wrap the roller, or sometimes retransmond after retreat. In production, the retreat between the second stage and the third stretching machine is often found in the production, and the three five rollers are reversed. After the orientation, the fiber stress is large and retractable. These can be improved by tension thermal setting or proper heat treatment.

Hai'an County Qinfeng Chemical Fiber Co., Ltd. specializes in production and sales:polypropylene staple fiber, Polyester Staple Fiber, functional polypropylene short fiber, functional polyester short fiber, hydrophilic polyester short fiber,  polypropylene, PP staple fiber, polyester staple fiber.