PP (Polypropylene)

Polypropylene features an ultra‑low density of merely 0.89‑0.91 g/cm³ and excellent heat resistance with a melting point above 160 °C. Its finished products can endure long‑term service above 100 °C and are suitable for steam sterilization. It boasts outstanding chemical stability, resisting corrosion from acids, alkalis, salt solutions and various organic solvents below 80 °C. It delivers favourable mechanical properties and remarkable flex‑fatigue resistance, together with superior electrical insulation and non‑toxic, odour‑free properties. Nevertheless, it suffers from poor low‑temperature impact resistance and tends to turn brittle under cold conditions. Ageing may easily occur upon sunlight exposure or contact with copper.

Applications of different PP grades

Homopolymer Polypropylene (PP‑H) Polymerized from pure propylene monomer, it has high crystallinity, good rigidity and high strength. Mainly applied for strapping bands, woven sacks, ropes, file folders, household utensils, microwave‑safe food containers and BOPP (Biaxially‑Oriented Polypropylene) films, which are widely used as base substrates for food composite packaging films.

Random‑Copolymer Polypropylene (PP‑R) Random copolymer of propylene with 1‑7% ethylene. It achieves high transparency, good flexibility and excellent low‑temperature toughness. Main applications cover high‑clarity films, hot‑water supply 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. Widely adopted for automotive components 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.