Thermal expansion sponge products
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・Excellent fire resistance
At a temperature of 200 °C or higher, thermal expansion starts to create a solid heat insulation layer. The expansion material fills the space to block smoke.

・Easy-to-handle shapes
The material is provided in sponge tapes or in sponge blocks. They are soft and easy to process.

Halogen-free compounds emit a very small amount of toxic gas.

・Sound and vibration insulation
In addition to fire resistance, it also has sound and vibration insulation capabilities enabling it to be used as a housing material.

It can be easily applied on ceilings and walls using double-sided adhesive paper or butyl sheet tape.

Types and Shapes



Thermal expansion of sponge product

Application examples: Sponge products

Adopted by Taiwan High Speed Rail for its 700T

Adopted by Taiwan High Speed Rail for its 700T

Number of train cars built: 30 trains with 12 cars per train for a total of 360 cars
Manufacturers: Kawasaki Heavy Industries, Nippon Sharyo, and Hitachi
Thermal expansion sponge has been used in car bodies (to prevent the spread of fire) and door gaps (to block smoke)

Thermal expansion sponge is incorporated in:

Fire retardant on Taiwanese high speed trains