| 摘要 |
<p>A light weight door for a caravan is made as a sandwich from two panels (20, 22) with an infilling of a wooden frame consisting of rails (36, 38) and stiles (32) which are not jointed together, and with blocks (26) of expanded polystyrene filling the spaces between the rails and stiles, these blocks being initially thicker than that of the wooden frame parts, and all of the parts being bonded together so that the blocks become compressed. The bonding is carried out such that the door is concave/convex at the latch edge but planar at the hinge edge so that in closing the door the top and bottom ends of the door abut the door frame first and to bring the latch into registry with its keeper on the door frame it is necessary to press or pull the middle part of the door against the frame thus straightening out the concave/convex edge. This assures better sealing of the door within its frame and reduces any tendency for the door to stick.</p> |
