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Test Method: SATRA TM83

Measurement of the area shape retention and collapsing load of formed box toe (toe puff) and counter (stiffener) materials

December 2021

SCOPE

This method is intended to determine the shape retention properties and compression

strength of a domed test specimen. The method is mainly applicable to footwear box

toe (toe puff) and stiffener materials but can also be used to assess any

deformable material.

PRINCIPLE

A domed test specimen is formed, with the area shape retention of the test

specimen determined by measuring the height of the dome. The average force

required to compress the dome for the first and tenth collapses is calculated, before

the area shape retention is recalculated. Testing is carried out on both wet and dry

test specimens. The resilience and the moisture resistance of the test specimen

material are also calculated.

There are four dome formation techniques:

Method 1: Heat activated materials

1a: Conventional Oven Method

1b: Flash Activation Method

Method 2: Solvent activated materials

Method 3: Non-thermoplastic fibreboard

REFERENCES

EN ISO 7500-1 - Metallic materials. Calibration and verification of static uniaxial testing machines. Tension/compression testing machines. Calibration and verification of the forcemeasuring system
SATRA TM1 – Thickness of leather and insole materials.

HISTORY

First issued January 1973. Revised March 1989, September 1990, December 1996 incorporating PM61 and PM82, September 2009, March 2012, September 2018, December 2021. Amended December 2019.

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

USAGES

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