Polypropylene is a Chinese brand name of synthetic fiber isotactic polypropylene fiber made from propylene, a by-product of petroleum refining, also called polypropylene fiber. It has the characteristics of rich raw materials, simple process and low cost. However, polypropylene yarn is a yarn made of synthetic fiber, which is easier to fluff than natural fiber and rayon, and is more easily entangled into a ball after raising.
In fact, the problem of fabric pilling is normal, and the reason for pilling is also a lot of talk, the biggest reason is the fiber's own characteristics. Yarn due to friction with different fabrics, polypropylene yarn fabric of static electricity will produce fluff, usually we are sticking with tape hair bulb to go, in fact, this method is a temporary solution, but also from the quality of the starting yarn itself. In fact, improving the softness of the polypropylene yarn can well inhibit the problem of yarn pilling.
So far, there are three ways to improve the softness of polypropylene yarns, and they are all in the spinning process:
The first method is to make the yarn soft by the traditional mechanical method, mainly by the soft yarn treatment, destroying the glue film to express the softness. The disadvantage is that the method is easy to cause the polypropylene yarn to pilling.
The second method is to improve the moisture regain of the polypropylene yarn, but pay attention to the scope, if the large area of ​​the test will cause the polypropylene yarn moldy, and the softness improvement is not obvious. Or adding a suitable softening agent during the spinning process can also increase the softness of the yarn.
The third method is similar to the second method in that the roving is softly treated and the roving is oiled, the above-mentioned glue film is softened, and the softness is improved with the softener.
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