Paper Industry The Sheet material made up to a network of natural cellulose fibers which have been deposited from aqueous suspension is called Paper . Raw Material Pulping Method Kraft process ( alkaline) Sulphite Process ( acidic ) Neutral Sulphite semi chemical process Steps Involving in the Neutral Sulphite semi chemical process 1. Cutting of Raw material 2. Dry Cleaning 3. Wet Cleaning 4. Screening 5. Digestion 6. Blow Tank 7. Pulp Wash Chapter No 15 Common Chemical Industries In Pakistan chemistry Part 2