Research Information System
International Caucasian Forestry Symposium, Artvin, Turkey, 24 - 26 October 2013, pp.884-887, (Full Text)
Waste paper is used in pulp and paper production as secondary raw material. It consists of clean rejects/trimmings from paper mills, but may also comprise household waste and waste from a very wide range of economic sectors. Waste paper comes from printing works, paper processing plants, department stores, self-service stores and homes. The aim of this study was to improve optical properties of waste paper which has low brightness. To this end, 3 different kinds of waste papers were used in this study. Printing paper, newspaper and packaging paper were recycled and produced handsheets with using Precipitated calcium carbonate (PCC) as filler. Ground calcium carbonate (GCC) was also used for comparing with PCC. According to obtained results, optical properties of waste papers were improved by using PCC and GCC. On the other hand, Papers produced with using PCC were higher optical properties than GCC’s. Although there were decreases on physical properties of papers, physical properties of waste paper obtained with using PCC were better than GCC’s.