Manufacturing method of rayon is described here. There are different types common manufacturing method of rayon. All types of textile square measure made up of polysaccharide. There square measure main four main procedures by that polysaccharide is remodeled into textile.
The Common Manufacturing method of Rayon are
(1) The cellulose ester method
(2) The cuprammonium method
(3) The viscose method
(4) The cellulose ester method.
The general principles of textile yarn production involve the subsequent steps.
(a)To treat polysaccharide with chemicals for rendering from it a liquid
(b)To force the liquid through fine holes
(c)To amendment from liquid stream into solid polysaccharide filaments.
The Viscose method
This is discovered in 1892 in European nation. During this method, spruce a kind of treechipsareused. Spruce logs square measure reduced to pulp and refined for polysaccharide base. Pulp treate with hydrated oxide to create alkali polysaccharide. It react with carbon disulphide to create viscose. It often dissolves in dilute hydrated oxide . As a result, there produces ruddy or orange liquid. This liquid need to filter so unbroken for ageing till a thick fluid made. This is the ‘Viscose’. This fluid passed through fine jets into a dilute mixer of sulfuric acid. During this approach it generates polysaccharide into continuous fibers.
The largest production of textile these days is factory-made by this method. the price is low.
Cellulose > Steeping > Dissolving > Xanthation > Filtration > Extrusion