This machine determine the fastness of the finish of a leather upper, leather lining, synthetic upper or lining and fibreboard. Rubbing can be carried out in dry or wet conditions. The latter can be water, solvents in shoe polish, or toe puff solvents applied to the back of the material.

Fastness can be judged by the effect on the sample material or the transfer of colour to the rubbing pad. The change in appearance of the finish and the colour transferred to the rubbing pad is assessed by reference to a standard scale.

The machine can also be used for testing the rub/abrasion resistance of inks on printed films under dry or oily conditions.

The machine has a rotating head holding a circular felt pad under a load of either 0.73kg or 2.5kg as required. An automatic feature raises and lowers the rotating head and felt pad to and from the specimen surface while the test is in progress - this prevents overheating of the specimen as a result of abrasion between the felt pad and the test specimen which can adversely affect results. The counter only operates when the felt pad is in contact with the test specimen. It is a pre-determined counter which can be set to stop the machine when the preset count has been reached.

The machine also features an air blower which directs an adjustable stream of cooling air onto the surface of the specimen to prevent overheating of the sample during the test.

Related Items:

• STM 102P Felt pads

For more information please contact our Test Equipment Sales Team who will be pleased to assist you with any queries.