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Overview ISO 20028-1:2019 defines a standardized designation system for thermoplastic polyester (TP) moulding and extrusion materials. It covers polyester homopolymers and copolyesters based on PET,…
1 Scope This document establishes a system of designation for thermoplastic polyester (TP) material, which can be used as the basis for specifications. It covers polyester homopolymers for moulding a…