1.1 该方法包括测定二氧化碳气体通过薄膜、片材、层压材料、共挤出物或涂有塑料的纸或织物形式的塑料的稳态传输速率的程序。它规定了（ 1 )二氧化碳气体透过率(CO 2 TR),( 2 ）膜对二氧化碳气体的渗透性（PCO 2 ），和（ 3 ）二氧化碳渗透系数（P′CO 2 ）在均质材料的情况下。该方法是定量的，并已通过随附的ILS证明可有效测量56.7 cc/(m 2 ×天）至331 cc/（m 2 ×日）。 1.2 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 二氧化碳气体传输速率 2 TR)是阻隔材料提供的包装保护的重要决定因素。然而，它不是唯一的决定因素，必须根据经验进行额外的测试来将包装性能与CO相关联 2 TR.如果买卖双方就抽样程序、标准化程序、测试条件和验收标准达成一致，它适合作为测试的裁判方法。

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. This method is quantitative and has been demonstrated by the enclosed ILS to be effective for measuring materials from 56.7 cc/(m 2 × day) to 331 cc/(m 2 × day). 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.