The process of polypropylene staple fiber seems simple and convenient, but if there is a slight error in operation, it will have a greater impact on the finished product, such as the problem of excessive polypropylene fiber elongation.

Excessive elongation of polypropylene staple fibers can cause many hazards. And in blending, it will also affect the strength of the yarn.

In spinning, the strength of the yarn after blending was found to be poor, such as the quality index of pure polypropylene 2808, the polypropylene 50% cotton blend index 1950, the polypropylene 50% cotton blend index 2193,215 the pure cotton quality index 2336. From the above data, it can be seen that pure spun polypropylene yarn has the highest strength, much higher than cotton, but after blending with cotton, it is not as high as pure cotton. Although this situation may be related to the unevenness of polypropylene staple fibers and cotton, it is also related to polypropylene The short fiber is difficult to control the elongation, so the seemingly simpler process is also a test of the manufacturer.

polypropylene staple fiber looks like a mass of cotton from the outside. It is soft and has a certain degree of elasticity. polypropylene staple fiber has a large elongation property, which is easy to control in production. The elongation will be over 60%, except for its polypropylene macromolecule In addition to its own structural factors, it may be insufficiently stretched during the production process. Due to the large non-uniformity of the yarn, it is easy to wrap around the roller and break it when the stretching ratio is increased, or it may be retracted after pulling. It is often found in production that the retraction of the yarn between the second and third stretchers when stopping will pull three and five rolls upside down, indicating that after orientation, the internal stress of the fiber is very large and there is shrinkage. These can be improved by tension heat setting or proper heat treatment.

Hai'an County Qinfeng Chemical Fiber Co., Ltd. is a company specializing in the production, research and development and sales of polypropylene staple fiber, polyester staple fiber, functional polypropylene staple fiber and PP staple fiber. It is based on innovation and sets a good example for the industry. Its polypropylene short fiber main specifications 1.5D to 200D, length 5-150mm, product color is complete, a wide variety, support color to map or sample custom. Qinfeng will always adhere to the business philosophy of “pursuing excellence and creating brilliance”. We sincerely look forward to your call!

For more product information, please contact: Mr. Qian 13962787918, 13813743991 Website: http://www.glory-fiber.com/