| 摘要 |
The invention relates to a method for the manufacture of a bituminous coating sheet for a base, wherein a bitumen-impregnated core material (3), on which a layer of rear-face bitumen (4) is applied, is caused to contact one or more rotating bodies during the manufacturing process, and wherein welding bitumen (6) is subsequently applied in zones (200, 600) in order to enable, during application of the sheet on the base, the establishment of pressure equalization channels between the layer of rear-face bitumen (4) and the base. The invention is characterised in that a mixture is provided of a slip material that has been dispersed, emulsified or dissolved in a liquid and a filler material having a grain size that essentially does not exceed 0.15 mm; that the mixture is applied to the layer of rear-face bitumen (4) on the side that is to be caused to contact a rotating body; that the liquid is evaporated prior to contact with the rotating body; and that welding bitumen (6) is applied in zones (200, 600) on the side that is provided with said mixture. |
