ISO 7906:2022 皮革 色牢度试验 试验的一般原则

标准编号：ISO 7906:2022

中文名称：皮革 色牢度试验 试验的一般原则

英文名称：Leather — Tests for colour fastness — General principles of testing

发布日期：2022-10

标准范围

本文件规定了皮革色牢度评估试验的一般原则，如附件A.本文件中包含的程序是大多数牢度试验方法的通用程序。本文件为测试和报告色牢度提供了通用基础。指出了这些方法的用途和局限性，定义了几个术语，给出了这些方法起草的概要，并讨论了描述这些方法的条款的内容。简要讨论了许多方法的通用程序。色牢度是指颜色对这些材料在制造和后续使用过程中可能暴露的不同试剂的耐受性。皮革颜色的变化和未染色的相邻织物或其他材料的染色被评定为牢度等级。被测皮革的其他可见变化，例如表面外观、光泽度或收缩率的变化，被视为单独的特性，并按此报告。皮革牢度试验方法不仅可用于评估皮革和相关材料，如涂层皮革和皮革板，还可用于最终评估皮革染料的色牢度。当使用这种方法时，染料通过规定的程序以规定的颜色深度应用于指定的复鞣皮革或皮革皮，然后以通常的方式测试材料。

This document specifies general principles on colour fastness evaluation tests for leather, as listed in Annex A.Procedures included in this document are common to most of the fastness test methods.This document provides a common basis for testing and reporting colour fastness. The uses and limitations of the methods are pointed out, several terms are defined, an outline of the drafting of the methods is given and the contents of the clauses describing the methods are discussed.Procedures common to a number of the methods are discussed briefly.Colour fastness means the resistance of the colour to the different agents to which these materials can be exposed during manufacture and their subsequent use.The change in colour of leather and staining of undyed adjacent fabrics or other materials are assessed as fastness ratings.Other visible changes in the leather under test, for example surface appearance, change in gloss or shrinkage, are considered as separate properties and reported as such.The leather fastness test methods can be used not only for assessing leather and related materials, such as coated leather and leather board, but also for the eventual assessment of the colour fastness of leather dyes. When such a method is so used, the dye is applied to a specified retanned leather or crust leather in defined depths of colour by stated procedures and the material is then tested in the usual way.

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