Conventional ester foams

Description

Conventional ester foams are polyester foams in specific grades with varying levels of density and hardness. They combine a high degree of hysteresis with low elasticity, and therefore provide good shock absorption. Some of these foams are suitable for edge welding.

 

Foam grades

S 253

Protecting
Typical applications Shoe comfort layer
Density ISO 845 (kg/m³) 22-24
CLD 40% ISO 33861 (kPa) 3.5-4.5
Tensile strength ISO 1798 (kPa) >150
Elongation ISO 1798 (%) >200
Tear resistance ASTM D3574/R (N/cm) <10
Cell size  Visiocell (µm) 600 (tv)

S 259

Protecting
Typical applications Shoe comfort layer
Density ISO 845 (kg/m³) 22-24
CLD 40% ISO 33861 (kPa) 6.8-8.2
Tensile strength ISO 1798 (kPa) >150
Elongation ISO 1798 (%) >120
Tear resistance ASTM D3574/R (N/cm) <20
Cell size  Visiocell (µm) -

S 273

Protecting
Typical applications Shoe comfort layer
Density ISO 845 (kg/m³) 23-26
CLD 40% ISO 33861 (kPa) 3.4-4.2
Tensile strength ISO 1798 (kPa) 200
Elongation ISO 1798 (%) >200
Tear resistance ASTM D3574/R (N/cm) <10
Cell size  Visiocell (µm) 490 (tv)

S 275

Protecting
Typical applications Shoe comfort layer
Density ISO 845 (kg/m³) 24-26
CLD 40% ISO 33861 (kPa) 4.3-5.7
Tensile strength ISO 1798 (kPa) >150
Elongation ISO 1798 (%) >150
Tear resistance ASTM D3574/R (N/cm) <10
Cell size  Visiocell (µm) -

S 291 EW

Protecting
Typical applications Masking tape
Density ISO 845 (kg/m³) 24-28.5
CLD 40% ISO 33861 (kPa) 2.5-4.5
Tensile strength ISO 1798 (kPa) >250
Elongation ISO 1798 (%) >50
Tear resistance ASTM D3574/R (N/cm)  
Cell size  Visiocell (µm) 500-700