technical
Random vs Block (Heterophasic) Copolymer
Random copolymer disperses comonomer evenly along the chain (clarity, lower modulus). Block / heterophasic uses a separate rubber phase for impact (PP-B).
Why it matters for procurement
Understanding random vs block (heterophasic) copolymer matters whenever you need to translate a producer's technical data sheet into a procurement specification. Misreading the term can result in pricing the wrong material or accepting a non-compliant lot.
When you submit an RFQ, naming the relevant standard or property explicitly (rather than relying on a generic equivalent) reduces re-quote cycles and accelerates routing to the supplier with the matching grade in stock.