EN ISO 21309-1:2019 Plastics - Ethylene/vinyl alcohol (EVOH) copolymer moulding and extrusion materials - Part 1: Designation system and basis for specifications
This document establishes a system of designation for ethylene/vinyl alcohol (EVOH) copolymer thermoplastic materials@ which may be used as the basis for specifications. The types of ethylene/vinyl alcohol (EVOH) copolymer plastic are differentiated from each other by a classification system based on appropriate levels of the designatory property: ?? melt mass-flow rate; ?? and on information about basic polymer parameters@ intended application and/or method of processing@ important properties@ additives@ colorants@ fillers and reinforcing materials. This document is applicable to copolymers of ethylene and vinyl alcohol containing from 15 mol % to 60 mol % of ethylene. It applies to materials ready for normal use in the form of powder@ granules or pellets@ unmodified or modified by colorants@ additives@ fillers@ etc. It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data@ performance data or data on processing conditions which can be required to specify a material for a particular application and/or method of processing. If such additional properties are required@ they are intended to be determined in accordance with the test methods described ISO 21309-2@ if suitable. In order to specify a thermoplastic material for a particular application or to ensure reproducible processing@ additional requirements can be given in data block 4 and 5 (see Clause 4@ introductory paragraph).
EN ISO 21309-1:2019 history
2019EN ISO 21309-1:2019 Plastics - Ethylene/vinyl alcohol (EVOH) copolymer moulding and extrusion materials - Part 1: Designation system and basis for specifications