METHOD FOR PRODUCING SECONDARY FIBRE SOURCES OF WOODFREE RESPECTIVELY WOODY WHITE WASTE-PAPER QUALITY FROM MIXED PAPER WASTES CONTAINING COLORING MATTERS AND/OR OTHER DYESTUFFS FOR THE PURPOSE OF PAPERMAKING

摘要

Mixed waste paper is sorted according to their fibre content, e.g. types with an without wood fibre, and according to colour into the following categories, A) white paper, B) paper with complementary colours, such as red- green, yellow -blue, C) white paper with less than 15% black print surface. These categories are mixed in the reqd. proportions and used as a source of fibre for white paper with or without wood fibre. - ()