| 摘要 |
Thermally clad metal section comprises metal section (10) (for example, of an aluminium alloy) and cladding section (12) (for example, of a PVC plastics material) of relatively low thermal conductivity. The metal section comprises two oppositely and outwardly projecting lips (20, 24) which can be received in two oppositely and inwardly facing channels (38, 40) of the cladding section. To secure the clad section together, a resilient neoprene cord (46) is inserted into one of the channels (38) and one lip (20) is inserted to engage the cord. The other lip is forced against an outer surface (62) of the cladding section to slide over the surface, with compression of the cord (46), and snap home into its channel (40). The cord (46) serves both to retain the lip (24) in its channel (40) and as a seal between the metal and cladding sections.
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