Polypropylene (PP)
Homopolymer and copolymer grades for injection, raffia and film.
Polypropylene is one of the most widely used thermoplastics thanks to its low weight, chemical resistance and heat tolerance. Homopolymer (PPH) is chosen for stiffness, copolymer (PPC/PPR) where impact strength matters.
Typical Technical Properties
- Types
- Homopolymer (PPH), block copolymer (PPB), random copolymer (PPR)
- Density
- 0.90–0.91 g/cm³ (typical)
- MFI (230 °C / 2.16 kg)
- 0.3 – 60 g/10 min (grade dependent)
- Melting point
- 160–170 °C
- Packaging
- 25 kg bags, big bags
Values are typical industry ranges; the producer's lot-specific TDS/MSDS is binding.
Applications
- Injection: containers, caps, housewares, automotive parts
- Raffia and woven sacks
- BOPP and cast film
- Pipes and sheets
- Nonwoven fabric
Frequently Asked Questions
Should I choose homopolymer or copolymer?
Homopolymer for stiffness and clarity; block copolymer for low-temperature impact strength; random copolymer when clarity and flexibility are both needed.
What does the MFI value indicate?
Melt flow index shows how easily the material flows. Thin-wall injection prefers high MFI, extrusion prefers low MFI.
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