| 摘要 |
<p>A process and an installation for the production of a bituminous sealing sheet, comprises an armature impregnated and/or coated with a given bitumen and having a zone in the shape or a band or a portion of a band of a different bitumen from the first bitumen. An armature strip (2) is produced which is impregnated and/or coated except for at least one zone in the form of a strip or a strip portion (4) on at least one of its surfaces (2', 2''), having a thinner thickness of bitumen (3, 3') or no application of bitumen (3, 3'), to be used at the at least one strip or strip portion (4), over a controlled thickness, a different bitumen (5) from that initially applied and finally, after cooling and solidification of the eventually added bitumen (5), processing the resulting sheet or sealed membrane (11) in the desired form, the processing operations being carried out by continuous movement of the armature (2) in an installation (6) or suitable coating line comprising at least two coating stations (7, 7', 8).</p> |
