刘晓庆门照艳全集|免费看美女直播软件|精东传媒VS天美传媒在线|双腿打开点就可以吃到扇贝了视频|欧美va电影|欧美手机在线观看|国产午夜精品

How elastic is polypropylene BCF yarn?

Polypropylene BCF yarn is treated by putting the yarn in steam or hot air or boiling water. At this time, the fiber with high shrinkage produces greater shrinkage and is located in the center of the yarn. Extruded to form a loop shape on the surface of the yarn, thereby obtaining a fluffy, full and elastic BCF yarn.

Polypropylene BCF yarn characteristics: it combines the high strength of continuous long fibers and the bulkiness of short fibers, with the characteristics of high temperature resistance, friction resistance, and corrosion resistance.

Performance index of polypropylene BCF yarn: The grey cloth woven from polypropylene BCF yarn is generally finished by dyeing, raising (single or double-sided), etc. The fabric requires soft, fluffy, elastic and uniform dyeing. Therefore, the bulkiness of the bulked yarn, the specifications of the raw materials, the mixing uniformity, etc. are its main performance indicators.