EN
ZHTest Method: SATRA TM83
Measurement of the area shape retention and collapsing load of formed box toe (toe puff) and counter (stiffener) materials
December 2021
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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