Test Method: SATRA TM8

Colour fastness to circular rubbing

November 2022

SCOPE

This method is intended to assess the degree of damage (marring) and transfer of a material’s surface colour during mild dry or wet abrasion. The method is mainly applicable to footwear upper materials but can be used to assess any coloured material such as leather, plastics, and textiles.

PRINCIPLE

A specimen of the material is rubbed by a rotating dry or wet circular wool felt pad under a constant contact force. The test is stopped after a predetermined number of revolutions and the damage to the surface, and/or the transfer of any colour or finish to the felt pad, is assessed subjectively using a geometric grey scale.

REFERENCES

BS 1006: 1990 – Colour fastness of leather and textiles: section A01 - General principles of testing.
BS 1006: 1990 – Colour fastness of leather and textiles: section A02 - Grey scale for assessing colour change.
BS 1006: 1990 – Colour fastness of leather and textiles: section A03 - Grey scale for assessing staining.
BS 3144: 1968 – Sampling and physical testing of leather - Method 3.
BS 3424 Method 26: 1987 – Determination of thickness of coated fabrics.
BS 4060: 1989 – Specification for pressed wool felts - Appendix E1.

HISTORY

First issued December 1966. Revised October 1968, October 1974, April 1992, November 2000, June 2004, November 2022.

AVAILABILITY

This test method is available to members and non-members.

PRICE (ex. VAT)

This price is for a printed copy of the Test Method.

• Members: £75
• Non-members: £215

TYPE

• Discolouration

USAGES

• Leather - uppers and linings
• Tests applicable to several material types
• Textiles and coated textiles, including synthetic uppers and linings