1.1本文件建立了乙烯-醋酸乙烯热塑性材料的名称体系，可作为规范的基础。1.2乙烯-醋酸乙烯酯（EVAC）塑料的类型根据以下指定特性的适当等级通过分类系统进行区分:a） 醋酸乙烯酯含量；b） 熔体质量流量；以及有关预期用途和\/或加工方法、重要特性、添加剂、着色剂、填料和增强材料的信息。1.3本文件适用于从3%至50%（约25%摩尔）乙酸乙烯酯的质量分数的所有乙烯-乙酸乙烯酯共聚物。它适用于以粉末、颗粒或颗粒形式准备正常使用的材料，以及未经着色剂、添加剂、填料等改性或改性的材料。1.4并不意味着具有相同名称的材料必然具有相同的性能。本文件不提供工程数据、性能数据或有关加工条件的数据，这些数据可用于指定特定应用和\/或加工方法所需的材料。如果需要此类附加性能，则应根据ISO 21301-2中规定的试验方法（如适用）进行测定。1.5为了指定特定应用的热塑性材料或确保可重复处理，可在数据块5中给出附加要求（见4.1）。

1.1 This document establishes a system of designation for ethylene-vinyl acetate thermoplastic material, which can be used as the basis for specifications. 1.2 The types of ethylene-vinyl acetate (EVAC) plastic are differentiated from each other by a classification system based on appropriate levels of the following designatory properties: a) vinyl acetate content; b) melt mass-flow rate; and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials. 1.3 This document is applicable to all ethylene vinyl acetate copolymers containing from a mass fraction from 3 % to 50 % (approximately 25 % molar) of vinyl acetate. It applies to materials ready for normal use in the form of powder, granules or pellets and to materials unmodified or modified by colorants, additives, fillers, etc. 1.4 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 determined in accordance with the test methods specified in ISO 21301-2, if suitable. 1.5 In order to specify a thermoplastic material for a particular application or to ensure reproducible processing, additional requirements can be given in data block 5 (see 4.1).