EN ISO 105-S01:1995

Overview

EN ISO 105-S01:1995 is an international standard developed by CEN that specifies a method for testing the colour fastness of textiles when exposed to vulcanization in hot air. This test is crucial for assessing the resistance of textile colours to the action of typical rubber compounds used in industries such as proofing. The standard defines procedures to evaluate how a textile's colour withstands heat and chemical effects produced during the vulcanization process.

The method involves heating a textile specimen in direct contact with an initially unvulcanized rubber compound at controlled temperatures. Changes in the textile’s colour are then assessed using a standardized grey scale, enabling manufacturers and quality controllers to quantify colour durability under industrial conditions.

Key Topics

• Scope and Purpose
  Focuses on textiles of all types and forms, assessing resistance to colour change caused by hot air vulcanization and the decomposition products of rubber compounds.

• Test Principle
  The test involves placing textile specimens in contact with an uncured rubber sheet and heating at 125°C ± 2°C for 30 minutes in an oven with uniform air circulation.

• Specimen Preparation

  • For fabrics: specimens sized 40 mm x 100 mm are pressed onto the rubber sheet.
  • Yarns are knitted into fabric or laid flat to meet the required dimensions.
  • Loose fibers are compressed into sheets of specified size.
    The rubber compound is moistened with petroleum ether to ensure adhesion.

• Equipment and Materials

  • Oven with temperature control and airflow fan.
  • Unvulcanized rubber compound sheets with a specific mix of components including pale crepe, zinc oxide, sulfur, and others.
  • Petroleum ether for moistening the rubber sheet.
  • Grey scale for assessing colour change in compliance with ISO 105-A02.

• Assessment and Reporting
  After exposure, specimens are cooled for 4 hours in a standard atmosphere. Colour change is evaluated by comparison with the original textile using the grey scale. Test reports shall include standard reference details, sample identification, and numerical rating of colour change.

Applications

• Textile Manufacturing
  Ensures that dyed textiles used in environments involving rubber vulcanization maintain colour integrity during and after production processes.

• Quality Control in Proofing Industry
  The standard is especially valuable for manufacturers of products that combine textiles and rubber components, helping to prevent quality failures caused by colour degradation.

• Research and Development
  Assists in developing new textile materials and dyes with enhanced resistance to heat and chemical exposure during vulcanization.

• Compliance and Certification
  Supports conformity assessment for textiles in markets requiring demonstrated colour fastness under industrial hot air vulcanization conditions.

Related Standards

• ISO 105-A01:1989 – General principles for testing colour fastness in textiles.
• ISO 105-A02:1993 – Grey scale for assessing change in colour, used for evaluating textile samples.
• ISO 139:1973 – Specifies standard atmospheres for conditioning and testing textiles to achieve consistent test results.

By adhering to EN ISO 105-S01:1995, stakeholders in textile manufacturing and rubber proofing can ensure reliable assessment of colour fastness, contributing to improved product durability and customer satisfaction.