| 摘要 |
<p>An apparatus 2 for supplying a source of infra-red heat to a surface or substance comprises a metal fibre yarn mat 12 having approximately 50-100 unidirectionally oriented metal fibres. The fibres are prepared by combing randomly oriented metal fibres manufactured by a melt extraction method. In further aspects, apparatus for supplying a source of infra-red heat to a surface or substance is provided: where the apparatus is at least partially constructed using lightweight, insulating, non-combustible material 10; or where the apparatus comprises a pre-mix fan 4 system for mixing gas and air together prior to any ignition. Preferably, the apparatus can be used in the repair of an asphalt surface by bringing the apparatus into contact with the surface, or into sufficiently close proximity to the surface, to heat it to a required temperature. Alternatively, the apparatus may be used for burning off gases by bringing the apparatus into contact with the gases, or into sufficiently close proximity to the gases, to burn them off cleanly at a required temperature.</p> |
