1.1 本试验方法包括测定木材和人造板基材上有机涂层的耐结块性。阻块性是指涂层在长时间压在另一个表面上时，能够抵抗粘附在该表面上并抵抗外观变化的能力。 1.2 第节概述了确定块阻力的一般方法 6. 和 7. 然而，用户材料和程序中固有的变化可能要求对通用方法进行调整，以提高准确性。段落 7.3 和 7.4 提供了根据用户的特定应用定制通用程序的指南。段落 7.5 提供了一种评级方法。 1.3 试验方法 2009年2月 应用于测定应用于家具等木质表壳产品的有机涂层，特别是油漆的耐印刷性或压力斑点。 1.4 以国际单位制表示的数值应视为标准。 括号中给出的值仅供参考。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 在仓储、包装和运输过程中，涂层木板产品必须面对面或背靠背堆放，不得使涂层饰面粘附（堵塞）和损坏。该试验方法描述了一种利用压力、热量、时间和湿度等因素评估堵塞条件的实验室方法。 4.2 有机涂层的硬度或固化度，或两者兼而有之，可以使用封闭试验进行评估。 4.3 有机涂层的挥发性损失率（干燥速度）可以使用阻塞测试来评估。 4.4 木质基材上有机涂层的保护性包装材料（滑动片）的有效性可以通过阻塞试验进行评估。

1.1 This test method covers the determination of the block resistance of organic coatings on wood and wood-based panel substrates. Block resistance is the ability of a coating to resist sticking to another surface and to resist any change in appearance when it is pressed against that surface for a prolonged period of time. 1.2 General methods for determining block resistance are outlined in Sections 6 and 7 . Variations inherent in user materials and procedures, however, may dictate adjustments to the general method to improve accuracy. Paragraphs 7.3 and 7.4 provide guidelines for tailoring the general procedure to a user's specific application. Paragraph 7.5 offers a rating methodology. 1.3 Test Method D2091 should be used for the determination of print resistance or pressure mottling of organic coatings, particularly lacquers, applied to wood-based case goods such as furniture. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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. 1.6 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 Coated wood panel products must be stacked face to face or face to back during warehousing, packaging, and transportation without the coated finish sticking (blocking) and becoming damaged. This test method describes a laboratory means of evaluating conditions of blocking using factors of pressure, heat, time and moisture. 4.2 Degrees of hardness or degrees of cure of organic coatings, or both, can be evaluated using a blocking test. 4.3 The rate of volatile loss (drying speed) of organic coatings can be evaluated using a blocking test. 4.4 The effectiveness of protective packaging materials (slip sheets) for organic coatings on wood substrates can be evaluated using a blocking test.