Print methodology for applying polymer materials to roofing...

B - Operations – Transporting – 41 – F

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B41F 19/02 (2006.01) B41F 17/00 (2006.01) E04D 5/10 (2006.01)

Patent

CA 2521764

A method of making a composite roofing material and the resulting material by depositing nail tabs made of a thermoplastic, thermosetting, adhesive or elastomer material, in a liquid state, onto the base substrate of the composite roofing material or onto the saturated or coated roofing material, or onto a transfer surface to be pressed or laminated onto the roofing material. A preferred embodiment transfers the nail tabs onto an engraved transfer impression roll and uses a pressurized applicator to inject the viscous tab material into engraved patterns depressed in raised areas of the impression roll, then deposits the material onto the roofing material. A preferred embodiment also includes the thermoplastic or thermosetting material in a liquid or viscous state hardened or cured by either its exposure to the air or by the use of ultra-violet or visible light.

L'invention porte sur un procédé de fabrication d'un matériau de couverture composite et sur le matériau obtenu par dépôt de bandes de renforcement fabriquées dans une matière thermoplastique, thermodurcissable, adhésive ou élastomère, à l'état liquide, sur le substrat de base du matériau de couverture composite ou sur le matériau de couverture saturé ou enrobé, ou sur la surface de transfert à comprimer ou laminer sur le matériau de couverture. Selon un mode de mise en oeuvre, on transfère les bandes de renforcement sur le rouleau d'impression gravé et on utilise un applicateur sous pression pour injecter la matière visqueuse dans des motifs gravés en creux dans des zones en relief du rouleau d'impression, puis on dépose le matériau sur le matériau de couverture. Selon un mode de mise en oeuvre préféré, la matière thermoplastique ou thermodurcissable à l'état liquide ou visqueux est durcie ou cuite soit par exposition à l'air, soit par utilisation d'une lumière ultraviolette ou visible.

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