Topic summary
Waste paper
Extracted from the Wikipedia article Paper recycling.
Waste paper recycling most often involves mixing used/old paper with water and chemicals to break it down. Three categories of paper can be used as feedstocks for making recycled paper: mill broke, pre-consumer waste, and post-consumer waste. The industrial process of removing printing ink from paper fibres of recycled paper to make deinked pulp is called deinking, an invention of the German jurist Justus Claproth.