The diagram below illustrates the process by which recycled paper is produced from used paper. Summarise the information by selecting and reporting the main features.

The flowchart illustrates the step-by-step process of how waste paper is transformed into usable recycled paper. Overall, the paper recycling process is a continuous, multi-stage operation that can be broadly divided into three main phases: the initial collection and sorting of waste paper, the chemical and mechanical processing to create clean pulp, and the final manufacturing of new paper rolls. The process begins with the collection of used paper from public recycling bins or commercial businesses. Once gathered, the waste paper is transported via trucks to a specialized recycling facility. Upon arrival, it undergoes a crucial sorting stage where any unsuitable items, such as plastic, staples, or other non-paper materials, are removed to ensure the quality of the raw material. Following the sorting stage, the graded paper is transferred to a pulper. Here, water and specific chemicals are added to break the paper down into a thick, slushy mixture known as pulp. This pulp is then subjected to a de-inking and filtering process to strip away any remaining ink, glue, or impurities. Finally, the cleaned pulp is fed into a papermaking machine, where it passes through a series of heated rollers. These rollers simultaneously press out the excess water and dry the material, ultimately producing large rolls of freshly recycled paper that are ready to be used again.