E - Fixed Constructions – 04 – D
Patent
E - Fixed Constructions
04
D
E04D 5/10 (2006.01) B32B 37/24 (2006.01) D06N 5/00 (2006.01) E04D 5/12 (2006.01)
Patent
CA 2421270
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.
L'invention concerne un procédé de fabrication d'une feuille de revêtement bitumineux destinée à une base, qui comporte les étapes consistant à : mettre en contact une matière (3) centrale imprégnée de bitume, sur laquelle est appliquée une couche de bitume (4) de face arrière, avec un ou plusieurs corps rotatifs pendant le procédé de fabrication ; appliquer ultérieurement du bitume (6) de soudage sur certaines zones (200, 600) afin de permettre, pendant l'application de la feuille sur la base, l'établissement de canaux d'égalisation de pression entre la couche de bitume (4) de face arrière et la base. L'invention est caractérisée en ce que : un mélange de matière lubrifiante a été dispersé, émulsionné ou dissous dans un liquide, et la taille de particules de la matière de charge ne dépasse pas essentiellement 0,15 mm ; le mélange est appliqué sur la couche de bitume (4) de face arrière, sur la face mise en contact avec un corps rotatif ; le liquide est évaporé avant contact avec le corps rotatif ; et le bitume (6) de soudage est appliqué sur certaines zones (200, 600) de la face pourvue du mélange.
Fetherstonhaugh & Co.
Icopal A/s
LandOfFree
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