1.1 本指南涵盖拉伸包装膜的机械性能测试，因为拉伸包装膜已应用于单位负载或测试结构。本指南可适用于手工包装或机器包装应用。这些测试可以应用于现实世界或“现场”测试，也可以应用于理论或“实验室”测试。本测试不包括与拉伸包装应用无关的机械性能测试。 1.2 由于结果仅表明这是否符合测试方法用户指定的成功标准，因此未对任何这些测试方法的精度或偏差作出任何声明。 1.2.1 鼓励用户为自己的应用确定精度和偏差。 1.3 本标准中使用的单位是国际单位制（公制），其英文等效单位包括在括号中。 1.4 这些试验不适用于农业拉伸包装膜及其应用。 1.5 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。 1.6 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 本指南用于测试拉伸包装膜和拉伸包装设备在单元荷载或结构上使用期间和之后的性能。 编写这些试验的目的不是将其应用于农业拉伸包装膜及其应用。

1.1 This guide covers testing of mechanical properties of stretch wrapping films as they have been applied by a stretch wrapper to a unit load or test structure. This guide may be applied to hand-wrapping or to machine-wrapping applications. These tests may be applied to real-world or “field” testing or may be applied to theoretical or “laboratory” testing. This testing does not cover the testing of mechanical properties independent of application by stretch wrapper. 1.2 No statement is made about either precision or bias of any of these test methods since results merely state whether this is in conformation to the criteria for success specified by the user of the test method. 1.2.1 The user is encouraged to establish the precision and bias for their own application. 1.3 The units used in this standard are SI units (metric) with their English equivalents included following them in parentheses. 1.4 These tests are not intended to be applied to agricultural stretch wrapping films and its application. 1.5 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. 1.6 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 This guide is for testing the performance applied stretch wrapping film and stretch wrapping equipment during and after the film has been applied to a unit load or structure. These tests are not written with the intention for them to be applied to agricultural stretch wrapping films and its application.