BOPP Film Grade: PPH-T03 vs Random Copo

Knowledge Jul 02, 2026 By Bepa Zhu

Film-grade polypropylene comes mainly as homopolymer or random copolymer. The difference is whether a small amount of comonomer is built into the chain: homopolymer is essentially pure propylene, while random copolymer mixes in ethylene units.

Homopolymer film, such as PPH-T03, typically offers higher stiffness, better water-vapor barrier and excellent clarity after orientation. That makes it the workhorse for packaging, labeling and lamination films where rigidity and appearance matter.

Random copolymer film lowers the seal-initiation temperature and improves low-temperature impact and optical properties, which suits heat-seal layers and cold-climate use. The trade-off is usually a little less stiffness and barrier versus homopolymer.