| 摘要 |
<p>An object such as a fuse is enclosed within a homogeneous block of microporous thermal insulation material by a method which includes forming first and second blocks (12, 14) of insulating material having a relatively low density, arranging the object (15) between cooperating faces of the blocks, and compacting the blocks around the object so as to cause the blocks to merge and to form a homogeneous block of microporous thermal insulation material having a relatively high density. The first and second blocks may be incorporated into first and second housings (11, 13) respectively, one of the housings being provided with a protruding tab (17) and the other of the housings being provided with a corresponding slot (18).</p> |
