A paperboard container having enhanced rigidity and a method...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 1/34 (2006.01) B65D 65/42 (2006.01) D21H 27/10 (2006.01)

Patent

CA 2298299

The invention is directed to a container press-formed of paperboard having a top surface disposed for contact with material to be contained and an opposed bottom surface, the container comprising a first functional coating material such as a latex dispersed in the paperboard without forming a barrier to moisture. The invention also encompasses a method of manufacturing the press-formed paperboard container comprising before the container is press-formed the step of applying to the bottom surface of the paperboard a moistening solution comprising latex solids in an amount selected to avoid forming a moisture barrier and to avoid blistering on the bottom surface during press forming.

L'invention concerne un contenant en carton formé à la presse et ayant une surface supérieure placée de façon à être en contact avec le matériel à contenir et une surface inférieure opposée, le contenant comportant un premier matériau de revêtement fonctionnel tel qu'un latex dispersé dans le carton sans former une barrière à l'humidité. L'invention porte également sur un procédé de fabrication du contenant en carton formé à la presse, ledit procédé consistant à appliquer à la surface inférieure du carton, avant le formage à la pression du contenant, une solution d'humidification comprenant des solides de latex pour une quantité choisie afin d'éviter de former une barrière contre l'humidité et d'éviter de créer des boursoufflures sur la surface inférieure lors du formage à la pression.

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