1.1 该方法涵盖了测定二氧化碳气体通过薄膜、薄片、层压板、共挤或塑料涂层纸或织物形式的塑料的稳态传输速率的程序。它规定了( 1. )二氧化碳气体传输速率（CO 2. TR）( 2. )薄膜对二氧化碳气体（PCO）的渗透率 2. )，和( 3. )二氧化碳渗透系数（P'CO 2. )对于均质材料。 1.2 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 二氧化碳气体传输速率（CO 2. TR）是阻隔材料提供的包装保护的重要决定因素。然而，这不是唯一的决定因素，必须根据经验进行额外的测试，以将包装性能与CO 2. TR.如果买方和卖方已就取样程序、标准化程序、测试条件和验收标准达成一致，则其适合作为试验的参考方法。

1.1 This method covers a procedure for determination of the steady-state rate of transmission of carbon dioxide gas through plastics in the form of film, sheeting, laminates, coextrusions, or plastic-coated papers or fabrics. It provides for the determination of ( 1 ) carbon dioxide gas transmission rate (CO 2 TR), ( 2 ) the permeance of the film to carbon dioxide gas (PCO 2 ), and ( 3 ) carbon dioxide permeability coefficient (P’CO 2 ) in the case of homogeneous materials. 1.2 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. 1.3 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 Carbon dioxide gas transmission rate (CO 2 TR) is an important determinant of the packaging protection afforded by barrier materials. It is not, however, the sole determinant, and additional tests, based on experience, must be used to correlate packaging performance with CO 2 TR. It is suitable as a referee method of testing, provided that purchaser and seller have agreed on sampling procedures, standardization procedures, test conditions and acceptance criteria.