Study on the Manufacture of Laminated paperboard for Waste Paper

• Main Authors: Cheng-Hung Huang, 黃正宏
• Other Authors: Hweig Wang
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/17257481758012335565

碩士 === 國立臺灣大學 === 森林學研究所 === 88 === The Manufacture of Laminated Paperboard from Recycled Wastepaper 【Abstract】 The main purpose of this study is to investigate the effects of various hot pressing conditions and the solid contents of PF resin on the properties of recycled pulp；and the optimization of the manufacturing process of laminated paperboard is also discussed . There were no significant differences in weight gain % of paper sheet regardless of the type and basis weight of the paper sheet if treated with low solid content of resin . However，the weight gain % increased with increasing solid content of the resin，and levelled off when the solid content of resin reached 45 % . The treatment of recycled pulp with PF resin could improve the tensile strength，ring crush and dimensional stability of the paper . With high retention of PF resin，it is necessary to increase the hot pressing temperature and time in order to obtain the complete curing of the PF resin . The alcohol soluble PF resin，which is highly water resistant，will also provide some degree of water resistance to the laminated paperboard . From the standpoint of economics，the laminated paperboards made from ONP are superior to those made from OCC；and as far as price is concerned the recovery and utilization of ONP are quite competitive .