1.1 本规程旨在通过光学扫描系统，为观察和报告各种类型塑料薄膜中的缺陷提供标准化方法和标准。范围包括在用塑料树脂制备合适的薄膜后，对为特定应用而制备的薄膜中的缺陷进行现场检查。 1.2 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。 注1: 没有已知的ISO等效于本标准。 1.3 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 最终用户不接受胶片中的缺陷，因为在许多应用中使用的适用性降低。本文件旨在帮助用户检查、量化和观察缺陷。 4.2 本规程适用于实验室环境，将连续检验作为质量控制或研究工具。它也适用于生产薄膜的任何商业过程，包括挤压、压延等。 4.3 本规程也适用于作为材料的评估或筛选工具，用于此类性质的缺陷至关重要的其他工艺中，如纤维纺纱非织造布等。 4.4 不同设备（即使来自同一实验室的同一供应商）获得的结果往往不具有直接可比性，因为存在偏差，无法通过一致的操作条件完全解决。 当分析仪组件升级时，结果经常发生变化。此外，不同产品类型之间的结果通常不具有直接可比性。所有结果均应视为相对值，而不是绝对值。 4.4.1 因此，不建议在买卖双方之间的销售合同中提供绝对结果。对于销售合同，建议根据报告的绝对结果的历史关系、适用性或双方同意的参考材料确定产品等级名称。这是通过在一段时间内收集数据以建立可接受的控制限值来实现的。 4.4.2 感兴趣的缺陷尺寸范围通常在树脂供应商和转换器之间不同。实验室小型挤出生产线和商用挤出生产线之间的总缺陷数不可比。 因此，个体相关性的目的是获得可接受的结果以适合使用。 注2: 这在Brabender、Collin、Goettfert和OCS系统上进行了测试。 4.5 为了支持对不同结果的基本解释，以下几点可能有助于进行比较。 4.5.1 尺寸等级（数量和定义） 4.5.2 报告的缺陷类型 4.5.3 可比单位（凝胶/千克、凝胶/米 2. ，分类系统，索引。） 4.5.4 供应商（设备类型，例如铸膜或吹膜） 4.5.5 摄像机设置（灵敏度、灰度、分辨率。） 4.5.6 拉伸参数 注3: 对于缺陷计数等属性数据，根据实践中的建议，C型控制图最合适 E2587 ，第9节。

1.1 This practice intends to provide standardized approaches and criteria for the observation and reporting of defects in various types of plastic film, by means of an optical scanning system. Scope includes the in situ inspection of defects in films fabricated for specific applications after preparation of a suitable film from plastic resin. 1.2 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. Note 1: There is no known ISO equivalent to this standard. 1.3 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 Defects in film are not acceptable to the end-user as there is a reduction in the fitness-for-use in many applications. This document is intended to be a practice to assist users in the inspection, quantification and observation of defects. 4.2 This practice is applicable in a laboratory environment, continuous inspection as a quality control or as a research tool. It is also appropriate for use in any commercial process used to produce film including extrusion, calendaring, etc. 4.3 This practice is also suitable for use as an evaluation or screening tool for materials intended to be used in other processes where defects of this nature are critical, such as fiber spinning non-woven, etc. 4.4 Results achieved by different equipment, even from the same vendor in the same laboratory, are often not directly comparable as a bias exists that cannot be fully addressed through consistent operating conditions. Results frequently shift when analyzer components are upgraded. Additionally, results are often not directly comparable between different product types. All results are to be considered as relative values rather than absolute. 4.4.1 Therefore, it is not recommended to provide absolute results as part of a sales contract between the buyer and seller. For sales contracts, it is recommended to establish product grade designations based on the historical relationship of the absolute results reported, and fitness-for-use or based on a reference material agreed by both parties. This is attained by the collection of data over a time-period to establish acceptable control limits. 4.4.2 The defect size range of interest is usually different between resin supplier and converters. Total defect counts are not one to one comparable between small laboratory extrusion lines and commercial extrusion lines. Therefore, an individual correlation is the aim to get accepted results for fitness-for-use. Note 2: This was tested on Brabender, Collin, Goettfert, and OCS systems. 4.5 For support in a basic interpretation of the different results the following points may be helpful for comparison. 4.5.1 Size classes (number and definition) 4.5.2 Reported defect types 4.5.3 Comparable units (gels/kg, gels/m 2 , class system, index.) 4.5.4 Vendor (type of equipment, for example, cast or blown film.) 4.5.5 Camera settings (sensitivity, grey level, resolution.) 4.5.6 Extrusion parameters Note 3: For attribute data such as defect counts, C-type control charts are most appropriate per recommendations within Practice E2587 , Section 9.