Paper scrap pertains to discarded paper materials, such as newspapers, magazines, and cardboard. The recycling process for paper involves its collection, sorting, and conversion into pulp, which is subsequently used to manufacture new paper products.

Conversely, rubber scrap refers to discarded materials, such as waste tires, conveyor belts, and rubber hoses. The recycling process for this involves shredding or granulating the rubber to produce rubber crumb, which is, then, used in the production of new products. Some respective examples of paper and rubber scrap include: