Paperboard for use in water resistant packaging

Details Paperboard for use in water resistant packaging Paperboard for use in water resistant packaging

D - Textiles, Paper

21

H

D21H 23/46 (2006.01) B65D 85/00 (2006.01) D21H 23/48 (2006.01) D21H 23/50 (2006.01) D21H 23/56 (2006.01) D21H 27/10 (2006.01)

Patent

CA 2630156

A method of producing paperboard and cartons made therefrom is described incorporating a waterproof or water resistant coating applied to the interior of the carton except for areas intended for gluing. A coating material (122) is applied to the surface of an applicator roll (110), and a portion of the coating material is then removed from the roll. Contact between a paperboard web (150) and the roll transfers coating material to the web, creating a coated surface except for an uncoated stripe (237). A carton blank (300) may be formed from the coated web with the uncoated portion of the carton blank cut from the uncoated stripe.

La présente invention concerne un procédé de production de carton et un carton ainsi obtenu, celui-ci comprenant une couche imperméable apposée sur sa surface interne à l~exception des zones destinées à un encollage. Un matériau de revêtement (122) est couché sur la surface d~un rouleau applicateur (110), et une partie de ce matériau est ensuite enlevée du rouleau. Un contact entre une bande de carton (150) et le rouleau transfère le matériau de revêtement à la bande, ce qui crée une surface enduite, hormis une zone non couchée (237). Une découpe de carton (300) peut être formée à partir de la bande enduite, la partie non couchée de la découpe étant découpée dans la zone non couchée.

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