1.1 本试验方法涵盖了从桩地板覆盖物样本中拔出或折断一簇所需的力的测量。 1.2 本试验方法适用于切割和成圈纱线地板覆盖物。 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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====== 5.1 试验方法 D1335 对于绒头纱地板覆盖物的簇绒粘合，正在用于商业装运的验收测试。按照中的指示进行比较测试 5.1.1 可能是可取的。 5.1.1 如果因使用本试验方法报告的试验结果的差异而产生争议，买方和供应商应进行比较试验，以确定其实验室之间是否存在统计偏差。建议从偏差调查中获得适当的统计协助。作为最低要求，双方应尽可能从大量相关类型的材料中抽取一组同质的试样。然后，应将测试样本以相同数量随机分配给每个实验室进行测试。应使用适当的统计分析和双方在测试开始前选择的概率水平，比较两个实验室的平均结果。 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在考虑已知偏差的情况下解释未来的测试结果。 5.2 绒线地板覆盖物的良好性能在很大程度上取决于其原始外观的维护。在切绒纱线地板覆盖物中，簇绒结合不足可能导致严重磨损区域的绒完全丧失。在簇结不充分的环形毛纱地板覆盖物中，毛圈可能会被拉出，形成难看的长圈，这可能是危险的。

1.1 This test method covers the measurement of force required to pull or break a tuft from a pile floor covering sample. 1.2 This test method is applicable to both cut and loop pile yarn floor covering. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 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 ====== 5.1 Test Method D1335 for tuft bind of pile yarn floor coverings is being used for acceptance testing of commercial shipments. Comparative tests as directed in 5.1.1 may be advisable. 5.1.1 In case of a dispute arising from differences in reported test results using this test method, 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 from the investigation of bias. As a minimum, the two parties should take a group of test samples that are homogeneous as possible and are from a lot of material of the type in question. The test samples should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using appropriate statistical analysis, and a probability level chosen by the two parties before testing begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results with consideration to the known bias. 5.2 The satisfactory performance of a pile yarn floor covering depends to a considerable extent on the maintenance of its original appearance. In a cut pile yarn floor covering an inadequate tuft bind may result in complete loss of pile in areas exposed to severe wear. In a looped pile yarn floor covering with inadequate tuft bind the pile loops may be pulled out to form unsightly long loops which may be hazardous.