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Choosing between TPU, PU and EVA
Begin material selection by identifying flex zones, wear zones and the target mass.
ERTAN KALIP / 02
Choosing between TPU, PU and EVA
TPU can suit exposed wear surfaces, PU a cushioned section and EVA a light footbed. Hardness and density vary even within one family, so the choice should be checked with a sample.
- Choose a priority among weight, wear and cushioning.
- Compare samples of the same geometry.
Process
Related technical notes
Silicone and plaster preparation
A silicone impression is taken from the resin master and used to produce the plaster form for casting preparation.
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EVA
Ethylene-vinyl acetate foams are used in lightweight footbeds and midsoles.
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3D scanning and design
Scanning digitises the sample surface. Reference planes align this capture with the technical drawing.
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