PP (Polypropylene)

Polypropylene features ultra‑low density ranging from 0.89‑0.91 g/cm³ and outstanding heat resistance with melting point above 160 °C. Products can serve long‑term above 100 °C and withstand steam sterilization. It boasts excellent chemical stability, resisting corrosion by acids, alkalis, salt solutions and various organic solvents below 80 °C. It delivers favourable mechanical performance and remarkable flex‑fatigue resistance, together with superior electrical insulation and non‑toxic, odour‑free characteristics. However, it suffers from poor low‑temperature impact resistance and tends to become brittle in cold environments. Ageing easily occurs under sunlight exposure or contact with copper.

Applications of different PP grades

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

Random‑Copolymer Polypropylene (PP‑R): Random copolymer of propylene with 1‑7% ethylene. High transparency, good flexibility and improved low‑temperature toughness. Applied for high‑clarity films, hot‑water supply pipes, heating pipelines, disposable syringes, transparent household goods and food containers.

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

Please specify your additional requirements: colour, gloss level, environmental compliance, impact performance, melt‑flow index, ash content, 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.