| 摘要 |
<p>Plastic foam sheet is made by extruding expanded polystyrene foam, cutting the strip into rectangular sections, trimming, degassing, sticking sections together at their principal sides to form blocks, cutting at right angles to the joints to form block sheets and bonding these with covering(s) at right angles to the adhesive layers. A method for the production of plastic foam sheet (8) from polystyrene extrusion-foaming material (I), involves (a) extruding foam strip through a rectangular die with the dimensions h x b (h = height; b = width), (b) cutting the strip into sections (3) of length l, trimming and degassing, (c) sticking together at least n (= 2) sections at their principal sides to form rectangular blocks (4) of height (n x h), width b and length l, (d) cutting through the blocks (4) at right angles to the adhesive joints at intervals of s 1, s 1 s 2, s 1 s 2 s m to the side with the height (n x h) so as to form block sheets (8) with the dimensions S m x (n x h) x l and (e) bonding the block sheets (8) with a covering (11) on at least one of the sides at right angles to the adhesive layer(s). Independent claims are also included for covered block sheets obtained by this method, with two reinforced mortar layers as coverings (11) or with at least one metal sheet as covering (11).</p> |
