【英文标准名称】: Standard Test Method for Bulk Properties of Textured Yarns 【原文标准名称】: 膨松纱线厚层特性的标准试验方法 【标准号】: ASTM D4031-2007 【标准状态】: 现行 【国别】: 【发布日期】: 2007 【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: D13.58【标准类型】: (Test Method)【标准水平】: ()【中文主题词】: 特性;试验;纺织试验;纺织材料;变形纱;纱【英文主题词】: bulk; bulk properties; crimp; textured yarn; yarn【摘要】: 1.1 This test method covers the measurement of the change in length of a tensioned skein of textured yarn due to change in crimp characteristics brought about by exposure to wet or dry heat. The change in length, depending on procedure, is a measure of skein shrinkage, crimp contraction, bulk shrinkage, or crimp recovery.1.2 This test method applies to crimped, continuous multifilament yarns ranging from 1.7 to 88.9 tex (15 to 800 denier).1.3 Three conditions are provided for crimp development mediums, and loading routines are provided to be used on the yarn skeins to allow determination of yarn bulk by several different procedures.1.4 The values stated in either SI units or inch-pound units are to be regarded as standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalent; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.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.【中国标准分类号】: W04【国际标准分类号】: 59_080_20【页数】: 6P.;A4【正文语种】: 作者: 251382493 时间: 2017-2-24 08:43:37