Polypropylene staple fiber production process prone to these problems!

The production process of Polypropylene staple fiber seems simple and convenient, but in fact, if the operation is slightly wrong, it will have a great impact on the production of the finished product, such as the problem of excessive elongation of polypropylene staple fiber.

Polypropylene staple fiber elongation is too large, will bring a lot of harm. And in blending, the yarn strength will also be affected.

In the spinning process, it has been found that the yarn strength difference after blending, such as the quality index of pure polypropylene fiber 2808, polypropylene 50% cotton blend index 1950, polypropylene 50% cotton blend index 2193,215 pure cotton quality index 2336. By the above data shows, high pure polypropylene yarn spinning strong zui, far higher than cotton, but cotton blended, rather than pure cotton high, although this may be mixed with polypropylene short fiber and cotton in the inhomogeneity, also associated with polypropylene short fiber is difficult to control the length of stretch, so seems easier than dispute process is also a comparison test of manufacturer.

The appearance of Polypropylene staple fiber looks like a mass of cotton, which is soft and elastic to a certain extent. The elongation performance of polypropylene staple fiber is relatively large, which is easy to be poorly controlled in production, and the elongation will be over 60%. This is not only the structural factors of its polypropylene macromolecule itself, but also the insufficient tension in the production process.

Because the silk is not uniform, improve the stretch of easy to wrap the roll broken, or sometimes pull back after the foot. During production, it is often found that the retraction of the silk between the second and the third drawing machine pulls the five rollers of the three sets to reverse, indicating that the internal stress of the fiber is great and there is retraction after orientation. These can be improved by tension heat setting or proper heat treatment.

Hubei BOTAO COMPOSITE FIBER CO., Ltd. was established in October 2000, specializing in the production and sales of polypropylene staple fiber, polyester staple fiber, composite fiber, poly (lactic acid) staple fiber, products are mainly used in non-woven fabric, automobile interior, geotextile, carpet, filtration and other industries. The company is located in Jingmen City, Hubei Province, now has six branches, covering a total area of 300,000 square meters. The company IS equipped WITH imported fiber production line, fixed assets of more than 100 million yuan, annual output of polypropylene staple fiber 50,000 tons, polyester staple fiber 20,000 tons, composite fiber 10,000 tons, the annual output value of more than 500 million yuan.