GB/T 41877.1-2022: Plastics - Ethylene-vinyl alcohol (EVOH) copolymer moulding and extrusion materials - Part 1: Designation system and basis for specifications

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Scope

This document specifies the designation system for ethylene-vinyl alcohol (EVOH)
copolymer thermoplastic materials, and the system can be used as the basis for
classification.
Different types of ethylene-vinyl alcohol (EVOH) copolymer thermoplastic materials
are distinguished with a classification system based on the following specified
properties, such as melt mass-flow rate, together with recommended use and/or
processing methods, important properties, additives, colorants, fillers, and reinforcing
materials.
This document applies to copolymers of ethylene and vinyl alcohol with an ethylene
content (mol fraction) of 15%~60%. This document applies to materials that are
conventionally in the form of powders, granules or pellets, unmodified or modified by
colorants, additives, fillers, etc.
This document does not imply that identically named materials will necessarily have
identical properties. This document does not provide engineering data, performance
data, or processing condition data necessary to describe a particular application and/or
processing method for the material. If necessary, the test methods specified in GB/T
41877.2 are used to determine the additional information.
In order to illustrate the special use of thermoplastic materials or to ensure the
reproducibility of processing, additional information may be given in data blocks 4 and
5 (see Chapter 4).

Basic Data

Standard ID	GB/T 41877.1-2022 (GB/T41877.1-2022)
Description (Translated English)	Plastics - Ethylene-vinyl alcohol (EVOH) copolymer moulding and extrusion materials - Part 1: Designation system and basis for specifications
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G31
Classification of International Standard	83.080.20
Word Count Estimation	10,189
Date of Issue	2022-10-14
Date of Implementation	2022-10-12
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration