It has been suggested that viscose be merged into this article. Discuss Proposed since July They named their material " viscose ", because its production involved the intermediacy of a highly viscous solution. The process built on the reaction of cellulose with a strong base, followed by treatment of that solution with carbon disulfide to give a xanthate derivative.
Rayon Background For centuries humankind has relied upon various plants and animals to provide the raw materials for fabrics and clothing.
Silkworms, sheep, beaver, buffalo deer, and even palm leaves are just some of the natural resources that have been used to meet these needs. However, in the last century scientists have turned to chemistry and technology to create and enhance many of the fabrics we now take for granted.
There are two main categories of man-made fibers: Rayon is a natural-based material that is made from the cellulose of wood pulp or cotton.
This natural base gives it many of the characteristics—low cost, diversity, and comfort—that have led to its popularity and success.
Today, rayon is considered to be one of the Rayon manufacture versatile and economical man-made fibers available. It has been called "the laboratory's first gift to the loom. Louis Pasteur and Count Hilaire de Chardonnet were studying this problem with the hope of saving this vital industry.
During this crisis, Chardonnet became interested in finding a way to produce artificial silk. In he patented the first successful process to make a useable fiber from cellulose.
Even though other scientists have subsequently developed more cost-effective ways of making artificial silk, Chardonnet is still considered to be the father of rayon. For the next forty years this material was called artificial or imitation silk.
By it had developed into an industry unto itself and was given the name rayon by the Federal Trade Commission FTC. The term rayon at this time included any man-made fiber made from cellulose.
Inhowever, the FTC divided rayons into two categories: By the s, most of the rayon produced was being used in industrial and home furnishing products rather than in apparel, because regular rayon also called viscose rayon fibers were too weak compared to other fibers to be used in apparel.
Then, inmanufacturers began to produce a new type of rayon—high-wet-modulus HWM rayon—which was somewhat stronger and which could be used successfully in sheets, towels, and apparel.
The advent of HWM rayon also called modified rayon is considered the most important development in rayon production since its invention in the s.
Today rayon is one of the most widely used fabrics in our society. It is made in countries around the world. It can be blended with natural or man-made fabrics, treated with enhancements, and even engineered to perform a variety of functions.
Raw Materials Regardless of the design or manufacturing process, the basic raw material for making rayon is cellulose. The major sources for natural cellulose are wood pulp—usually from pine, spruce, or hemlock trees—and To make rayon, sheets of purified cellulose are steeped in caustic soda, dried, shredded into crumbs, and then aged in metal containers for 2 to 3 days.
The temperature and humidity in the metal containers are carefully controlled. After ageing, the crumbs are combined and churned with liquid carbon disulfide, which turns the mix into orange-colored crumbs known as sodium cellulose xanthate.
The cellulose xanthate is bathed in caustic soda, resulting in a viscose solution that looks and feels much like honey. Cotton linters are residue fibers which cling to cotton seed after the ginning process.
Strictly defined, rayon is a manufactured fiber composed of regenerated cellulose. The legal definition also includes manufactured fibers in which substitutes have not replaced more than 15 percent of the hydrogens.
While the basic manufacturing process for all rayon is similar, this fabric can be engineered to perform a wide range of functions. Various factors in the manufacturing process can be altered to produce an array of designs. Differences in the raw material, the processing chemicals, fiber diameter, post treatments and blend ratios can be manipulated to produce a fiber that is customized for a specific application.Here manufacturing process of rayon fabric is discussed.
Rayon fabric is not an artificial fiber as it is derived from the naturally occurring cellulose. However, it is not completely a natural fabric, because this cellulose requires an extensive processing.
Most commercial rayon manufacturing today utilizes the viscose process.
This process dates to the early s, with most of the growth in production occurring between and In the early period, production was mainly textile filament, although the first staple was produced in China Rayon Fabric manufacturers - Select high quality Rayon Fabric products in best price from certified Chinese Fabric manufacturers, Polyester Cotton Fabric suppliers, wholesalers and factory on regardbouddhiste.com Handloom Ladies Kurti With Rayon We manufacture and supply an extensive assortment of Handloom Ladies Kurti With Rayon in Ahmedabad, Gujarat, India to our customers.
This product is broadly accepted by our esteemed clients. While the basic manufacturing process for all rayon is similar, this fabric can be engineered to perform a wide range of functions.
Various factors in the manufacturing process can . Viscose Rayon We are a successfully ranked entity amongst the famous manufacturers and exporters of outstanding quality Viscose Rayon. The offered rayon is designed and stitched by our team of deft designers using optimum grade rayon yarn as per the ongoing fashion trends.