Overview
SIST EN ISO 105-E14:1999 is an international standard that specifies a method for testing the colour fastness of textiles to acid-felting under mild conditions. This standard evaluates how textiles resist colour change and staining during exposure to dilute and hot mineral acids-a process commonly encountered in industries such as hat-making and felt production. By simulating the effects of acid felting, the standard provides a reliable way to assess textile durability and colour stability.
Key Topics
- Scope: Applicable to all types and forms of textiles tested by milling in acid solution with adjacent fabrics.
- Test Principle: A textile specimen is placed in contact with adjacent fabrics, milled in a sulfuric acid solution at 60 °C, rinsed, and dried. Changes in colour and staining are assessed using grey scale comparisons.
- Reagents and Apparatus: Requires dilute sulfuric acid solution, open containers or appropriate milling devices, wool and other fiber-based adjacent fabrics, and standardized grey scales for colour change and staining assessment.
- Specimen Preparation: Textiles can be tested as fabrics, yarn (knitted or laid in layers), or loose fibres. These are secured between two adjacent fabrics to form a composite specimen.
- Testing Procedure: Includes continuous milling for one hour in acid solution, rinsing, drying below 60 °C, and evaluation against grey scales.
- Assessment: Colour fastness results are rated numerically according to grey scale standards, indicating the degree of colour change in the specimen and staining on adjacent fabrics.
- Reporting: Test reports must include sample identification, test standard version, and numerical ratings for colour change and staining for each adjacent fabric type.
Applications
- Textile Industry: Ensures textiles maintain colour integrity when exposed to acidic conditions during processing, such as felting in hat-making.
- Quality Control: Provides manufacturers and laboratories with a standardized, reproducible method to evaluate and certify colour fastness properties of textile products.
- Product Development: Helps designers and engineers select suitable fibres and dyes with proven resistance to acid-felting, improving product longevity.
- Compliance and Certification: Supports compliance with international textile testing regulations and facilitates market acceptance of textile products.
Related Standards
- ISO 105-A01 & ISO 105-A02: General principles of colour fastness testing and the grey scales used for assessing colour change.
- ISO 105-A03: Grey scale for assessing staining on adjacent fabrics.
- ISO 105-F:1985: Defines standard adjacent fabrics used in colour fastness tests.
- Other parts of ISO 105 series, which cover various colour fastness tests for different conditions and factors affecting textiles.
Keywords: EN ISO 105-E14, colour fastness to acid-felting, textile colour fastness testing, acid felting test, grey scale assessment, textile durability, textile testing standards, hat-making textile tests, felt production, ISO 105 series standards.