1.1 本规程涵盖了一个确定施加到基材（例如，薄膜、纸张、非织造布）上的涂层量的程序。涂层的量表示为每给定面积的重量（例如，g/m 2. ，磅/令）。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得组合。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 涂层重量是涂层基材某些功能特性的指标（例如，密封性、剥离性、外观）。本实践中描述的方法是确定涂层重量的一种方法。 5.2 此做法不涉及可接受性标准。这些需要由产品的用户和生产商共同决定。 5.3 本规程中描述的方法包括操作员对有效涂层去除的评估。这是一种主观评估，需要对操作员进行培训以获得一致的结果。 5.4 这种做法适用于只有涂层可溶于所选溶剂的涂层基材。所使用的溶剂对涂层去除过程的成功至关重要。涂层基材制造商必须提供溶剂选择指南。

1.1 This practice covers a procedure for determining the amount of coating applied to a substrate, (for example, film, paper, nonwoven). The amount of coating is expressed as a weight per given area, (for example, g/m 2 , lb/ream). 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Coating weight is an indicator of certain functional characteristics of coated substrates (for example, sealability, peelability, appearance). The methodology described in this practice is a means of determining coat weight. 5.2 This practice does not address acceptability criteria. These need to be jointly determined by the user and producer of the product. 5.3 The methodology described in this practice includes operator assessment of effective coating removal. This is a subjective assessment and requires operator training for consistent results. 5.4 This practice is applicable to coated substrates in which only the coating is soluble in the chosen solvent. The solvent used is critical to the success of the coating removal process. The coated substrate manufacturer must provide guidance in choice of solvent.