Spruce logs shredded cooked with caustic soda made into shets of wood-pulp (alkali cellulose) The sheets are shredded and mixed with carbon disulphide The mix is tipped into a caustic soda bath, forming viscose spinneret acid-bath fibers or filaments Spool of rayon yarn 3.2 .1 Spinning methods: Spinning is done by three different methods in case of man-made fibers.

3.4.1 Manufacturing: Nylon 6, 6 is a linear condensation polymer made from hexamethylene diamine and adipic acid. Specific amounts of the two chemicals are combined in solution to form nylon salt. This salt is purified, polymerized, extruded in ribbon form, and chipped into small flakes or pellets. These flakes or pellets are melted and extruded through a spinneret into cool air and the nylon filaments are formed.