The whiteness of toilet paper is related to the raw materials, such as the selection of cotton pulp and wood pulp raw materials. Toilet paper manufacturers introduce that if starch is added to cotton pulp, the powder density of the pulp will be more uniform and tidy. Just like in the past when people used cotton fabric to make cotton quilts, the cotton fabric used for sizing and washing had no wrinkles, and was clean and tidy. Using cotton stalks and cotton short fibers as raw materials, heated with an appropriate amount of alkaline water at high temperature, it contains relatively pure cellulose.
The fibers are slender and elastic, tough and resistant to bending, and have good absorption. The paper made is fine and soft, with a high degree of opacity. Cotton short fiber is a coarse cotton fiber that has been finely rolled and partially used for textile filtration. For example, cotton stalks contain abundant grass and wood fibers, and there are still some short fibers left on cotton seeds. These short fibers are peeled off using a lint stripping machine, which is called "cotton short fiber".
Cotton short staple consists of three parts: longer fibers from the "fuzz"; The fibers from the wool seeds that have been crushed by the embossing machine; A layer of short and dense fibers that naturally grow and develop on the surface of cotton seeds, which is the main component of cotton lint. Regardless of whether the color of the raw cotton is pure white or milky white, it is called white cotton. Most of the raw cotton used in cotton mills is white cotton.
