Views:146 Author:Site Editor Publish Time: 2020-11-28 Origin:Site
Non woven fabrics have existed for a long time. From the earliest generation in the United States to the world's popularity, non-woven fabrics have experienced long-term development, and its features have also undergone great changes.
Contemporary non-woven fabric dates to the early 1930s. At that time, a few textile companies began experimenting with bonded materials as a way of utilizing cotton waste. The first commercial production of the products now called non-wovens began in 1942 in the United States in an effort to produce fabric directly from fibers. The market for non-woven products has experienced tremendous growth and has potential for more.
The definition of non-woven fabrics
Non-wovens are flexible, porous, products consisting of one or more fiber layers. The separate fibers may either be preferentially oriented in one direction or may be deposited in a random manner. They are bonded by chemical, thermal or mechanical processes into textile products. Non-wovens are mainly planar structures. This relatively young branch of the textile industry has expanded enormously after the second world-war because of the high production rates and the resulting cost savings.
Nonwovens may be classified as either disposable or durable goods. Disposable or non durable, nonwovens include such one-time use products as diapers, medical dressings, household wipes, and disposable protective clothing. Durable goods are used for apparel interfacing, automobile headliners, road underlayment, and carpets. For example, as the raw material of face mask, different non-woven fabric can make different kinds of mask, disposable masks made by disposable face mask machines adopts disposable non fabrics. Surgical face mask usually adopts durable goods.
Polyester is the most frequently used fibers in the United States; olefin and nylon are used for their strength, and cotton and rayon are used for absorbency. Some acrylic, acetate, and vinyon are also being adopted.
Fibers are selected on the basis of their properties and expected performance in end uses. New, first quality fibers are preferred over reused or reprocessed fibers. Both staple and filament fibers are used, and it is possible to blend fibers of different lengths as well as fibers of different generic groups. The selection of fibers depends on the product proposed, the care typically given it, and the expected or desired durability. As in the manufacture of all fabrics, the cost of the fibers used is important, as it in turn influences the cost of spunbond non woven fabric.