Recycled fiber can be generally defined as converting used fabric into fiber that can be reused in textile products. Recycled fiber is also commonly referred to as regenerated fiber or reclaimed fiber. Recycled content includes recycled raw material, as well as used, reconditioned, and re-manufactured components. Recycled fiber, an important source of pulp, comes from two primary sources: pre-consumer waste recovered from the manufacturing process and Post-Consumer Waste know as PCW which is recovered from the end user.

The application of recycled material is especially non-woven. It is used as mattress fillings, felt material for car insulation, roofing felts, loudspeaker cones,