| 摘要 |
PROBLEM TO BE SOLVED: To provide surface heating element that has an excellent flexibility, expansibility and elasticity. SOLUTION: At least a pair of electrodes 20 are formed on the electric heating base material 10 made of rubber containing conductive agents. For example, carbon black is used as conductive agent and silicone rubber is used as rubber. This configuration allows the surface heating element to have flexibility, expansibility and elasticity. As a result, the heating element has excellent workability for bending and winding and convenience of handling. The heating element is optimum for application requiring expansibility and elasticity such as mattresses, beds and seats.
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