The chemical name of polyester is polyethylene terephthalate, and it is a fiber that is machined from polyester. The industrial production of polyester staple fiber started in the 1950s and started late. However, due to its easy availability of raw materials, excellent performance and wide range of uses, it has developed very rapidly and has become the largest fiber variety in production. Polyester fibers can be divided into two categories: polyester staple fibers and polyester long fibers (polyester filaments) according to their appearance and shape. Among them, polyester staple fibers are the earliest developed ones. ”, “Wool polyester”, etc. are blended fabrics of polyester fibers. Polyester filament is similar to silk. It is a continuous thread with a length of thousands of meters. During production, it is usually wound into a bobbin of a certain shape and weight and then packaged for delivery.

my country's chemical fiber industry still relies on a large number of labor force, the overall technical level is not high, independent research and development capabilities need to be improved, the development of high-tech, functional fibers and composite materials lags behind, and high-performance textile machinery and equipment mainly rely on imports. With the improvement of technical level, the substitution of cotton pulp and wood pulp has been greatly improved. The raw material of cotton pulp in my country is cotton linters, and the annual output is relatively limited; the domestic wood pulp output is very small, mainly relying on imports. The output of viscose staple fiber accounts for nearly 90% of the total viscose fiber in my country.

Different properties of fibers affect their gloss. A glossy surface, less curvature, a flat cross-sectional shape, and a longer fiber length enhance light reflection. The drawing process in fiber manufacturing increases its luster by making its surface smoother. Adding a matting agent will destroy the reflection of light and reduce the gloss. In this way, the amount of added matting agent can be controlled, and optical fibers, matting fibers and non-optical fibers can be manufactured.