1.1本试验方法涵盖了在75μm[0.003 in]的宽度范围内测定包装密封中的通道60–100 % 概率（参见第节 8. ). 1.1.1视觉检测包装密封件中通道缺陷的能力在很大程度上取决于通道的大小、密封和未密封区域的对比度、两个包装层之间的粘合剂的数量和类型、反射光角度、使用的材料类型、放大倍数的使用以及检查员的培训和经验水平。 1.2本试验方法适用于至少有一个透明侧的包装，以便可以清楚地看到密封区域。 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，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1密封属性可以直接与工艺参数、设备或材料以及环境（室温和相对湿度）中的许多变量相关联。目视密封特性和缺陷可以提供包装完整性和生产密封问题的证据。 5.2目视密封缺陷通常是热密封过程变化的第一个迹象。在物理包性能测试后，它们还将表明缺乏包完整性或可能损害包完整性。

1.1 This test method covers the determination of channels in the package seal down to a width of 75 μm [0.003 in.] with a 60–100 % probability (see Section 8 ). 1.1.1 The ability to visually detect channel defects in package seals is highly dependent on the size of channel, the degree of contrast from sealed and unsealed areas, the amount and type of adhesive between the two package layers, reflecting light angle, types of material used, the use of magnification, and the inspector's level of training and experience. 1.2 This test method is applicable to packages with at least one transparent side so that the seal area may be clearly viewed. 1.3 The values stated in either SI units 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 shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 Seal attributes can be linked directly to a number of variables in process parameters, equipment, or material, as well as environmental (room temperature and relative humidity). Visual seal characteristics and defects can provide evidence of package integrity and production sealing problems. 5.2 Visual seal defects often will be the first indication of heat sealing process variation. They also will indicate a lack of, or potential compromise to, package integrity after physical package performance testing.