1.1 这些测试方法涵盖了所有类型和尺寸拉链的尺寸测量。 1.2 试验方法如下: 小节 链条平面度 34 – 39 链条直线度 40 – 44 链条厚度 28 – 33 链条宽度 45 – 50 拉链或零件的长度 9 – 14 纵向尺寸变化 51 – 58 滑块口宽度 21 – 27 胶带宽度 15 – 20 1.3 以国际单位或其他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，每个系统必须相互独立使用，不得以任何方式组合值。 1.4 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。 1.5 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====== 4.1 在适当的章节中讨论了特定测试的重要性。 4.2 这些测试方法被认为是商业货物验收测试的满意方法，因为测试方法已在贸易中广泛用于此目的，并且在大多数情况下，实验室间精度的当前估计值是可接受的。 4.2.1 如果因使用测试方法时报告的测试结果的差异而产生争议 D2060 对于商业装运的验收测试，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。 建议为调查偏差提供称职的统计协助。作为最低要求，双方应尽可能均匀地从大量相关类型的材料中选取一组试样。然后，应将试样以相同数量随机分配给每个实验室进行测试。两个实验室的平均结果应使用学生的 t -测试未配对数据和双方在测试开始前选择的可接受概率水平。 如果发现偏差，必须找到并纠正其原因，或者买方和供应商必须同意根据已知偏差解释未来的测试结果。 4.3 这些试验方法中的试验方法，以及试验方法中的试验方法 D2051 , D2052 , D2053 , D2054 , D2057 , D2058 , D2059 , D2061 和 D2062 ，是一组经验证的测试方法。它们可以作为评估拉链的辅助工具，而无需对拉链有透彻的了解。列举的测试方法没有提供对所有拉链性能的评估。 除了通过列举试验方法测量的性能外，还有其他性能对拉链的满意性能可能很重要。测量这些性能的测试方法尚未公布，因为尚未开发出实用方法，或者因为对现有未公布方法产生的信息进行有效评估需要对拉链有深入的了解。

1.1 These test methods cover the measurement of the dimensions of all types and sizes of zippers. 1.2 The test methods appear as follows: Sections Chain Flatness 34 – 39 Chain Straightness 40 – 44 Chain Thickness 28 – 33 Chain Width 45 – 50 Length of Zipper or Parts 9 – 14 Longitudinal Dimensional Change 51 – 58 Slider Mouth Width 21 – 27 Tape Width 15 – 20 1.3 The values stated in either SI units or in other units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way. 1.4 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. 1.5 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 ====== 4.1 The significance of specific tests is discussed in the appropriate sections. 4.2 These test methods are considered satisfactory for acceptance testing of commercial shipments because the test methods have been used extensively in the trade for this purpose, and because current estimates of between-laboratory precision are acceptable in most cases. 4.2.1 In case of a dispute arising from differences in reported test results when using Test Methods D2060 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t -test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If a bias if found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias. 4.3 The test method(s) in these test methods, along with those in Test Methods D2051 , D2052 , D2053 , D2054 , D2057 , D2058 , D2059 , D2061 , and D2062 , are a collection of proven test methods. They can be used as aids in the evaluation of zippers without the need for a thorough knowledge of zippers. The enumerated test methods do not provide for the evaluation of all zipper properties. Besides those properties measured by means of the enumerated test methods there are other properties that may be important for the satisfactory performance of a zipper. Test methods for measuring those properties have not been published either because no practical methods have yet been developed or because a valid evaluation of the information resulting from existing unpublished methods requires an intimate and thorough knowledge of zippers.