Paper Recycling is relatively straightforward and has been around for decades. After collection, paper and cardboard is sorted then baled for shipment to a mill. At a paper mill, recycled paper products are introduced into a pulper as one of three feedstocks for making new paper: mill broke, pre-consumer waste, and post-consumer waste. Mill broke is paper recycled from the production of paper at the mill. Pre-consumer waste is material which left the paper mill but was discarded before it was ready for consumer use, or paper being recovered from a printer before it was printed. Post-consumer paper comes from a blue box program and can include old corrugated containers (OCC), magazines, newspapers or food packaging.
The process of waste paper recycling involves making a pulp by mixing used paper with water and chemicals to break it down. By heating and chopping, the slurry is broken down into strands of cellulose called pulp. It runs through a series of processes to remove contaminants, inks, and other undesirable materials, then made into paper.