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
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.

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

Types and Shapes

●Block

●Tape

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