Martindale (unit)
The Martindale is a unit for quantifying the abrasion resistance of textiles, especially when used for upholstery.
The Martindale method, also known as the Martindale rub test, simulates natural wear of a seat cover, where the textile sample is rubbed against a standard abrasive surface with a specified force. The test equipment works in intervals of 5000 cycles, totalling the wear number (unit: Martindale) of abrasion cycles that leads to the material being worn to a specified degree. The higher the value, the more resistant the material is to abrasion.[1]
The national German textile institute specifies a minimum requirement for various applications, and here are some examples:
Soft padding [Martindale] | Hard padding [Martindale] | |
---|---|---|
Private use | 10,000 | 15,000 |
Office use | 25,000 | 35,000 |
For public transportation | 30,000 | 40,000 |
Consoles for use by police or emergency services may require values of 200,000 to 500,000.
In the US, the Wyzenbeek test is often used instead of the Martindale.
References
- ↑ Abrasion Resistance by the Martindale Method ASTM D4966-98 Standard Test Method for Abrasion Resistance of Textile Fabrics (Martindale Abrasion Tester Method) (PDF)
External links
- Martindale Rub Test by Kothea Limited
- Table of contents of DIN EN ISO 12947-1:2007-04 by Beuth-Verlag