Thermoforming Insoles

1. Information – Thermoforming Insoles

Confidential
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2.

Production process of thermoformed PU insoles
B
A
Slices
Curing 24h
5 mm
Cutting
Demoulding
0.12 m
Foam
1.1m
Mould
2m
140 oC
mold
Demoulding
Ca. 30 cm
Thermoforming
Textile
Cutting
Adhesive
160 oC
confidential
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3. Process to cast low density foam

Slab foam (free blowing foam)
Moulded foam
 
Density (kg/m3)
Hardness (Asker C)
Tensile Strength (kg/cm2)
Elongation (%)
Tear Strength (kg/cm)
Compression set (%)
Rebound (%)
confidential
Top
103
27-29
6.3
86
2.4
26
24
Middle
84
24-25
5.1
79
1.8
17
17
Bottom
109
33-35
6.8
92
2.5
28
17
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4. High pressure foaming equipment

Slabs 2.0 x 1.5 x 0,25 =0.75 m³
Sliced to 10 mm sheets
Thermoformed with different fabrics on top
Hennecke High Pressure BlocFoamat
Invest ~100,000 €
confidential
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5.

Comparion of Thermomolding and casting
Application
thermomolding thermomolding
casting
S 7579/139
CS7579/100
S 7579/135
Iso 137/56
CS 7579/100 C-B
Iso 135/74
Density
[kg/m³]
130 ± 5
90 ± 15
280 ± 20
Hardness
Asker C
35 ± 4
33 ± 4
40 ± 3
[%]
< 20
≦ 25
Compression set
confidential
casting
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