纺织地板覆盖物 用Vettermann滚筒测试仪测定外观变化

[中文适用范围]： 本文件规定了使用Vettermann鼓式测试仪对各类纺织地板覆盖物进行外观（表面、结构和颜色）变化测试的程序要求。不包括因其他作用引起的起球或颜色变化。 注：这些鼓式测试仪产生的外观变化应根据适用的评估标准进行评估。 [外文原描述]： This document specifies requirements for procedures that use the mechanical action of a Vettermann drum tester to produce changes in appearance (surface, structure and colour) to all types of textile floor coverings. It does not include pilling or colour changes due to other actions. NOTE Changes produced by these drum tester are assessed in accordance with the applicable assessment standards.