1.1 本规程包含压敏胶带的统一质量保证规定，并制定了验收检查的抽样计划和程序。 1.2 限制: 1.2.1 本规程仅包括给定规格上限或下限时的程序。它不提供双重、最小和最大规格限制。 注1: 当给出双规格限值（仅适用于变量测试）时，可使用ANSI/ASQC Z1.9的表C-3和示例C-3。 1.2.2 变量抽样计划适用于单个质量特征。在获得样品和物理性能测试的响应后，每次根据一个质量特性确定验收。 对每个附加特征重复该过程。 1.2.3 变量抽样计划要求对每个质量特征的响应直接或通过转换正态分布。如果不知道这一点，这种做法的潜在用户应寻求对统计技术有充分了解的人的建议，以提供该信息。 1.3 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。 1.4 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 磁带产品的质量由磁带生产商的质量体系决定，包括产品工程和生产中涉及的所有过程。 建议在生产商的质量体系中包括ANSI/ASQC Q94的适当章节。这种做法无意使这些系统标准化。生产商的声誉、生产商的合规证明或生产商质量体系的证据通常足以确保购买者或用户的质量一致。当需要合同或规范符合性的客观依据时，验收抽样是有用的。 4.2 本实践的目的是提供一份合理简单的文件，供压敏胶带的买方和卖方使用，以确定出售的产品是否符合产品的某些预定规格。 本规程提供了确定待检验样品尺寸的程序，以及确定是否应接受或拒绝该批次（出售材料的数量）的标准。本实践借鉴并基于ANSI/ASQC Z1.4和ANSI/ASQC Z1.9。 4.3 抽样计划包括两种形式:属性抽样和变量抽样。按属性抽样用于最终项目检验，在适当的情况下，两者都用于最终项目测试。按属性抽样的优点是简单，而按变量抽样的优点是成本较低，可以等效地保证决策的正确性。 4.3.1 按属性检查的抽样计划（见 表2 )，应用于最终项目检查（参见 5.3 ). （A） 本表基于ANSI/ASQC Z1.4中的表I、II-A、II-B和II-C，使用S-3的检验水平。 |Co公司 = 使用箭头下方的第一个样本计划。如果样本量等于或超过批次或批量，则执行100 % 视察 |铜 = 使用箭头上方的第一个示例平面。 交流电 = 验收编号。 重新 = 拒绝编号。 4.3.2 变量检验抽样计划（见 表1 和 5.4 )，应用于最终项目测试，除非另有说明 5.4.1.2 （a） 。 4.4 本规程的使用假设存在定义一个或多个质量特征的规范。建议买方和卖方在本惯例表格所示的选择范围内就可接受质量水平（AQL）达成一致。 4.5 当条件允许从正常检查切换到严格检查或减少检查时，可在 表1 和 表2 . 切换的决定应由买卖双方商定。当批次在正常检查下被拒绝时，通常会进行严格检查。AQL没有变化，但通常通过要求更大样本量的抽样计划来提高做出正确决策的保证。减少检验是指当一些批次（通常为10个）连续通过时，从正常检验转换而来。切换应在不跳过中间步骤的情况下，从降低到正常，从正常到收紧，或从收紧到正常。

1.1 This practice contains uniform quality assurance provisions for pressure-sensitive tapes and establishes sampling plans and procedures for acceptance inspection. 1.2 Limitations: 1.2.1 This practice only includes procedures for when an upper or a lower specification limit is given. It does not provide for double, both minimum and maximum, specification limits. Note 1: When double specification limits are given (applies to variables testing only), use may be made of Table C-3 and Example C-3 of ANSI/ASQC Z1.9. 1.2.2 The variables sampling plans apply to a single quality characteristic. Having obtained the sample and the responses to the physical property tests, acceptance is determined on one quality characteristic at a time. The process is repeated for each additional characteristic. 1.2.3 The variables sampling plans require that the response to each quality characteristic is normally distributed either directly or by transformation. If this is not known, the potential user of this practice should seek the counsel of someone with sufficient understanding of statistical techniques to provide that information. 1.3 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. 1.4 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 quality of a tape product is determined by the quality systems of the tape producer, including all processes involved in the engineering and production of the product. It is recommended that appropriate sections of ANSI/ASQC Q94 be included in a producer's quality systems. This practice does not intend to standardize these systems. A producer's reputation, a producer's certification of conformance, or evidence of a producer's quality systems are often sufficient to ensure a purchaser or user of a consistent quality. Acceptance sampling is useful when an objective basis of contract or specification conformance is desired. 4.2 The intention of this practice is to provide a reasonably simple document which can be used by both the buyer and seller of pressure-sensitive tape to determine if the product offered for sale meets some predetermined specification for the product. This practice offers the procedures for determining the size of the sample to be inspected and the criteria for determining whether the lot (amount of material offered for sale) should be accepted or rejected. This practice draws from and is based on both ANSI/ASQC Z1.4 and ANSI/ASQC Z1.9. 4.3 Two forms of sampling plans are included: sampling by attributes and sampling by variables. Sampling by attributes is used for end-item examination and both are used where appropriate for end-item testing. Sampling by attributes has the advantage of simplicity while sampling by variables has the advantage of costing less for the equivalent assurance of the correctness of decisions. 4.3.1 Sampling plans for inspection by attributes (see Table 2 ), should be used for end-item examination (see 5.3 ). (A) This table is based on Tables I, II-A, II-B, and II-C of ANSI/ASQC Z1.4 using an inspection level of S-3. |Co = Use first sample plan below arrow. If sample size equals or exceeds lot or batch size, do 100 % inspection. |Cu = Use first sample plan above arrow. Ac = Acceptance number. Re = Rejection number. 4.3.2 Sampling plans for inspection by variables (see Table 1 and 5.4 ), should be used for end-item testing except as indicated in 5.4.1.2 (a). 4.4 Use of this practice assumes that a specification defining one or more quality characteristics exists. It is suggested that buyer and seller agree on acceptable quality levels (AQL) from within the choices shown in the tables of this practice. 4.5 When conditions warrant switching from normal to tightened or reduced inspection, the appropriate sampling plans are available in Table 1 and Table 2 . The decision to switch should be agreed upon between the buyer and the seller. When lots are rejected under normal inspection it is usual to go to tightened inspection. No change in AQL is made, but the assurance of making the correct decision is improved usually by the sampling plan calling for a larger sample size. Reduced inspection is a switch from normal inspection made when some number of lots, usually 10, passes in consecutive order. Switching should move from reduced to normal and from normal to tightened or from tightened to normal without skipping an intermediate step.