1.1 本指南描述了在矿物纤维松散填充绝缘的现场应用中，在预定厚度或预期厚度范围内确定吹塑密度的两种替代程序。 1.2 本指南涉及将松散填充绝缘样品吹入已知体积的测试架中，测量所捕获绝缘的重量并计算吹入密度。 1.3 本指南适用于设计用于水平开放阁楼空间的气动松散填充矿物纤维绝缘材料。 1.4 本指南适用于松散材料制造商的产品设计和产品审核- 填充绝缘层。本指南适用于工厂质量控制程序。 1.5 本指南不预测矿物纤维松散填充绝缘的老化密度。 1.6 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。 1.7 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。 1.8 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 吹扫密度用于绘制松散填充覆盖图。吹密度与厚度的数据用于开发松散填充绝缘的可变吹密度表示。 4.2 松散填充矿物纤维绝缘的热阻（和电导率）取决于密度和厚度。得到的吹扫密度数据有助于建立视导热系数随密度变化的表达式。这反过来将有助于制造商开发松散填充绝缘包装的覆盖信息。 4.3 该方法中获得的吹扫密度仅用于测试厚度。通过使用不同厚度重复此处概述的程序，可以确定吹塑密度与厚度的关系。 4.4 这些程序与测试方法中描述的测试方法不同 C1374 . 根据所使用的试验条件，吹扫密度可能表示也可能不表示通过使用试验方法获得的安装密度值 C1374 . 4.5 本指南可用于制定适当的吹塑机设置，以达到预定厚度的目标吹塑密度。

1.1 This guide describes two alternate procedures for determining blown density at a predetermined thickness or a range of thicknesses expected in field applications of mineral fiber loose-fill insulation. 1.2 This guide involves blowing a sample of loose-fill insulation into a test frame of known volume, measuring the weight of the insulation captured and calculating the blown density. 1.3 This guide is intended for pneumatically-applied loose-fill mineral fiber insulation designed for use in horizontal open attic spaces. 1.4 This guide is intended for product design and product auditing by manufacturers of loose-fill insulation. This guide is adaptable as a plant quality control procedure. 1.5 This guide does not predict the aged density of the mineral fiber loose-fill insulation. 1.6 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. 1.7 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. 1.8 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 Blown density is used to develop loose-fill coverage charts. Data for blown density vs thickness is used in the development of a variable blown density presentation for loose-fill insulation. 4.2 Thermal resistance (and conductivity) of loose-fill mineral fiber insulation depends on density and thickness. The resulting blown density data is useful in developing an expression for apparent thermal conductivity as a function of density. This will in turn aid the manufacturer in developing coverage information for packages of loose-fill insulation. 4.3 The blown density obtained in this method is for the thickness of the test only. The relationship of blown density with thickness can be determined by repeating the procedures outlined here using different thicknesses. 4.4 These procedures are not the same as the test method described in Test Method C1374 . Depending on the test conditions utilized, the blown density may, or may not, represent the installed density values obtained by using Test Method C1374 . 4.5 This guide can be used to develop appropriate blowing machine settings to achieve a target blown density at a predetermined thickness.