GB/T 41877.1-2022 Active National standards

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

Publish Date: 2022-10-12 Implement Date: 2022-10-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 41877.1-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermoplastic plastics

Publish Date: 2022-10-12

Implement Date: 2022-10-12

Pages: 8 pages

Scope

This document specifies a naming system for ethylene-vinyl alcohol (EVOH) copolymer thermoplastic materials, which can serve as a basis for classification.
Different types of ethylene-vinyl alcohol (EVOH) copolymer thermoplastic materials are distinguished by values of specified characteristic properties, such as melt mass flow rate, as well as recommended applications and/or processing methods, important properties, additives, colorants, fillers, and reinforcing materials, etc., based on a classification system.
This document applies to copolymers of ethylene and vinyl alcohol with an ethylene content (mole fraction) of 15% to 60%. This document applies to materials that are typically in the form of powders, granules, or crushed particles, unmodified or modified with colorants, additives, fillers, etc.
This document does not imply that materials with the same name must have the same performance. This document does not provide the engineering data, performance data, or processing condition data required to describe the special applications and/or processing methods of the materials. If necessary, these additional information can be determined using the test methods specified in GB/T 41877.2.
To illustrate the special applications of thermoplastic materials or to ensure the reproducibility of processing, additional information can be provided in character group 4 and character group 5 (see Chapter 4).