| 摘要 |
<p>A door panel (1) has a peripheral frame (10) of extruded aluminium and a honeycomb core of plastics material tubes (11). An outer skin (2) of fibre-reinforced polyetherimide material is recessed with a pattern (3) formed in a preliminary operation of vacuum/pressure forming at elevated temperature. An inner skin (4) is plane. Edge channel members (5) of similarly formed, but thicker material are arranged around the edges of the door, enclosing the aluminium frame. A non- woven, polyester based scrim 6 extends across either side of the core and over the flanges (7) of the edge channels. For bonding of the core, skin and edge channels together, the assembly is placed in a jig and compressed at elevated temperature in a heated press. The core is crushed at the recessed pattern (3) and the scrim melts and acts as a hot melt adhesive. On cooling of the press platens, the assembled door is removed from the jig.</p> |
