1.1 本试验方法包括测定塑料缝合钮扣的耐冲击性。 1.2 以可接受的公制单位或其他单位表示的值应单独视为标准。每个系统中表示的值可能是精确的等价物，也可能不是精确的等价物:因此，每个系统必须独立于其他系统使用，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 该试验方法可用于确定按钮在冲击下抵抗断裂的能力，例如在按下可能导致按钮失效的成品时。 注1: 在制定本试验方法的过程中，发现以下因素影响了按钮在冲击条件下抵抗故障的能力: 树脂配方、形状、尺寸、厚度、孔数和间距。纽扣也可能通过该测试，但在熨烫衣服时由于熨烫过程中存在热量而失败。 5.1.1 如果两个实验室（或更多实验室）报告的测试结果之间存在实际意义上的差异，则应进行比较测试，以确定它们之间是否存在统计偏差，并使用主管的统计协助。至少，应使用尽可能均匀的测试样品，从获得不同休息结果的材料中提取，并以相同数量随机分配给每个实验室进行测试。 具有既定测试值的其他材料可用于此目的。应使用未配对数据的统计测试，在测试系列之前选择的概率水平上，比较两个实验室的测试结果。如果发现偏差，必须找到并纠正其原因，或者考虑到已知偏差，调整未来的测试结果。 5.2 试验方法 D5171 为了确定按钮的抗冲击性，可将其用于按钮商业装运的验收测试，但由于缺乏精度方面的信息，因此建议谨慎。

1.1 This test method covers the determination of impact resistance of plastic sew-through buttons. 1.2 The values stated in either acceptable metric units or other units shall be regarded separately as standard. The values expressed in each system may or may not be exact equivalents: therefore, each system must be used independently of the other, 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 test method may be used to determine the ability of a button to resist breaking under impact, for example in pressing the end item, which could cause the button to fail. Note 1: In the development of this test method it was found that the following factors influenced the ability of a button to resist failure under impact conditions: resin formulation, shape ligne size, thickness, number and spacing of holes. Buttons may also pass this test but fail during the pressing of a garment due to the presence of heat during pressing. 5.1.1 If there are differences of practical significance between the reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which the disparate rest results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing. Other materials with established test values may be used for this purpose. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias. 5.2 Test Method D5171 for the determination of the impact resistance of buttons may be used for acceptance testing of commercial shipments of buttons but caution is advisable since information is lacking on precision.