From a fiber to a fabric, two steps are generally requi […]
From a fiber to a fabric, two steps are generally required: one is the spinning process of the fiber to form a yarn, and the other is the weaving process of the yarn to form a fabric. For example, woven fabrics (woven fabrics) and knitted fabrics commonly used in clothing are formed through two processes: spinning and weaving. Woven fabrics (woven fabrics) are two sets of mutually perpendicular yarns interlaced horizontally and vertically on the loom according to a certain rule, with stable structure and smooth cloth surface. Knitted fabrics are formed by one or more groups of yarns intertwined with each other in a loop on a knitting machine according to a certain rule. The texture is soft and has greater extensibility and elasticity.
What is the non-woven fabric that has become popular recently?
In addition, there are some fabrics that can be formed directly from fibers without spinning and weaving. This kind of fabric is what we usually call non-woven fabrics, also called non-wovens, non-woven fabrics, and non-woven fabrics. Non-woven fabric is made of oriented or randomly arranged fibers through friction, entanglement, bonding or a combination of these methods, and the connotation is "non-woven". Non-woven fabrics exist in the fabric in the form of fibers, while the woven fabrics exist in the fabric in the form of yarns. This is also a main feature of non-woven fabrics that distinguishes them from other fabrics. In non-woven fabrics It is impossible to draw out the thread ends one by one.
What are the raw materials of non-woven fabrics?
As PetroChina and Sinopec began to build mask production lines to produce and sell masks, everyone gradually learned that masks are also inextricably linked to oil. Petroleum distillation and cracking can get propylene. Propylene is polymerized to get polypropylene. Polypropylene can be made into polypropylene fiber, which is what we usually call polypropylene. Polypropylene fiber (polypropylene) is the main fiber raw material for the production of non-woven fabrics, but it is not the only raw material. Polyester fiber (polyester), polyamide fiber (nylon), polyacrylonitrile fiber (acrylic), viscose fiber, etc. Can be used to produce non-woven fabrics.
Of course, in addition to the above chemical fibers, natural fibers such as cotton, linen, wool, and silk can also be used to produce non-woven fabrics. Some people often think of non-woven fabrics as chemical fiber products. This is actually a misunderstanding of non-woven fabrics. Like the clothing fabrics we usually wear, non-woven fabrics are also divided into chemical fiber non-woven fabrics and natural fiber non-woven fabrics, but chemical fiber non-woven fabrics are more common. For example, the cotton soft towel in the picture below is a non-woven fabric made of natural fiber-cotton. (Senior sister here would like to remind everyone that not all products called "cotton soft towels" are made of "cotton" fibers. There are also some cotton soft towels on the market that are actually made of chemical fibers, but they feel more comfortable. It's just like cotton, you must look at the ingredients when you buy).
Many disposable sanitary products used in our daily life use non-woven fabrics, such as disposable bed sheets, quilt covers, pillowcases, disposable sleeping bags, disposable underwear, compressed towels, facial mask paper, wet wipes, cotton soft towels, sanitary napkins, and diapers Wait. Non-woven fabrics are also inseparable from surgical gowns, isolation gowns, masks, bandages, dressings, and wrapping materials in the medical industry. In addition, wall coverings, carpets, storage boxes, vacuum cleaner filter bags, heat insulation pads, shopping bags, clothing dust covers, etc. used at home, floor mats in cars, roof cloths, door linings, filter cloths for filters , Activated carbon packaging, seat covers, sound insulation and shock-absorbing felts, rear window sills, etc. are also widely used non-woven fabrics.