PP (Polypropylene)

Polypropylene features an ultra‑low density of only 0.89‑0.91 g/cm³ and excellent heat resistance with melting point above 160 °C. Its finished products can be used long‑term above 100 °C and are steam‑sterilizable. Chemically, it withstands corrosion by acids, alkalis, salt solutions and various organic solvents below 80 °C. It delivers good mechanical properties and outstanding flex‑fatigue resistance, together with excellent electrical insulation and non‑toxic, odour‑free features. Nevertheless, it has poor low‑temperature impact resistance and tends to turn brittle under cold conditions. It is susceptible to ageing under sunlight or upon contact with copper.

Applications of different PP grades

Homopolymer Polypropylene (PP‑H): Polymerized from pure propylene monomer with high crystallinity, good rigidity and high strength. Mainly manufactured into strapping bands, woven sacks, ropes, file folders, household utensils, microwave‑safe food containers and BOPP (Biaxially‑Oriented Polypropylene) films, which serve as base substrates for food flexible composite packaging films.

Random‑Copolymer Polypropylene (PP‑R): Random copolymer of propylene with 1‑7% ethylene. It boasts high transparency, good flexibility and favourable low‑temperature toughness. It is widely used for high‑clarity films, hot‑water pipes, heating pipelines, disposable syringes, transparent household articles and food containers.

Block‑Impact‑Copolymer Polypropylene (PP‑B): Block copolymer of propylene and 5‑20% ethylene with well‑balanced rigidity and impact performance. Main applications include automotive parts such as bumpers, large‑size containers, battery housings, luggage, sports equipment and home‑appliance casings.

Please specify your additional requirements: impact performance, melt‑flow index, ash content, environmental compliance, gloss level, surface pitting and other physical‑property parameters.

MOQ: 1 ton upon successful sample testing. After‑sales: return and replacement for quality‑related defects.

Participation Process

Recycled pelletizing manufacturers please contact supplier service for supply registration.

Buyers: Click group‑purchase or contact procurement service to submit your procurement requirements. The platform screens qualified recycled raw‑material suppliers from the database or launches bidding according to your specifications. After sample validation, buyers confirm the preferred recycled material and supplier and sign the sales‑purchase contract.