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Test Method: SATRA TM40

Moulded-on rubber soles - state of cure test

March 1999


This test method is intended to determine whether or not moulded-on rubber soles have been satisfactorily vulcanised during manufacture, see section 8.1. The method is applicable to all footwear with moulded-on vulcanised rubber soles, but can also be used on moulded sole units.


A conical indentor is brought into contact with a test specimen cut from a rubber sole. A known force is then applied to the indentor and the depth of indentation after a specified period is recorded. A series of readings at specified locations is taken and a graph of indentation depth against distance from the bonding surface is plotted and extrapolated to the inner and outer surfaces of the sole. An undercure index for the inner surface of the sole is then calculated together with the thickness of rubber not cured satisfactorily.


This Test Method does not reference any additional Standards or Test Methods.


First issued March 1968. Revised October 1974, May 1980, February 1982, March 1999.


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


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

  • Members: £75
  • Non-members: £215



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