Exploration and Identification of Alternative Raw Materials for Paper and Newsprint Manufacture: Examination of Salai Groundwood and Cold Soda Pulps and Bamboo Sulphate Pulp from National Newsprint Mill, Nepanagar

摘要

Mill samples of salai (Boswellia serrata) cold soda, salai groundwood, and bamboo chemical pulps were collected from National Newsprint Mills Limited, Nepanagar, to evaluate their strength and optical properties. Examination indicates that pulps with higher strength properties and improved brightness values can be produced. The main area requiring attention as far as strength properties are concerned is in the salai cold soda plant. Beating in laboratory equipment (PFI mill) to a CSF of 180 gave more than a five fold increase in tensile strength and a 50% improvement in tearing strength. This improvement in bonding characteristics is important to the strength of the newsprint finish.