An Investigation on the NSSC Pulping of Bagasse for Making Fluting Paper

The Samples of bagasse were collected from depithing bagasse (Wet method) from Pars pulp and paper Mill. The average fiber length, cell wall diameter and thickness measured were 1.596 mm, 20.961 and 9.719 μm respectively. The chemical components of bagasse including cellulose, lignin, ash and extractive were measured as 55.75%, 20.5%, 1.85% and 3.25% respectively. The optimum conditions of pulping regarding pulp yield (74.95%) were 20% Na2O load, on the basis of dry bagasse. The pulping temperature was 170ºC and temperature residence time was 30min. Pulp refining was carried out with PFI revolutions of 2600 and 5500 RPM up to freeness 345 and 433ml CSF respectively. Statistical analysis showed that mechanical properties of hand sheets with basis weight 127gr/m2 NSSC pulp made from bagasse with freeness 345 and 433ml CSF are better than mixed hardwood NSSC pulp.