| 摘要 |
<p>An electrically conductive laminate having improved stability in electrical resistivity comprises electrically insulating top and bottom layers having inner surfaces and outer surfaces, a substantially continuous electrically conductive layer between the inner surfaces of the top and bottom layers and electrical conductor means in contact with the electrically conductive layer. The electrically conductive layer comprises a solvent-cast, plastic film comprising a polymer of amorphous structure having electrically conductive carbon or graphite particles substantially uniformly dispersed therethrough. The electrically conductive layer is of substantially uniform thickness. The top and bottom layers have edges, which are sealed together to thereby form an enclosed laminate containing the conductive layer. The laminate is capable of emitting electromagnetic radiation when an electric current is passed through the conductor means and the electrically conductive layer. The laminate is especially useful for use in a heating element for convective, convective or radiant heating. </p> |
