1.1 本试验方法包括一个程序，用于确定松开一卷压敏胶带所需的力。 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值。每个系统中规定的值可能不是精确的等效值；因此，每个系统必须独立使用，不得以任何方式组合值。 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。 1.4 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 此过程模拟手动和机器以低速退绕磁带。低速退绕所需的力是速率的函数。在某种程度上（预计每种结构类型和制造商会有所不同），会出现响应反转。该测试方法的速率不允许比较将以高速率展开的不同胶带。 5.2 该程序可用于表示满足以下条件:退绕规范；最大值、最小值或平均值；当中提到的响应 5.1 都被考虑在内。

1.1 This test method covers one procedure for determining the force required to unwind a roll of pressure-sensitive tape. 1.2 The values stated in either SI or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently, without combining values in any way. 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 This procedure simulates hand and machine unwinding of tape at low rates. The force required for unwinding at low rates is a function of rate. At some rate (expected to be different for each construction type and manufacturer) there occurs an inversion of the response. The rate for this test method does not allow for comparisons of different tapes that will be unwound at high rates. 5.2 This procedure can be used to indicate satisfaction where a specification for unwind; either maximum, minimum, or mean; is established and when the responses referred to in 5.1 are taken into consideration.