Paperboard container having enhanced rigidity and a method of making the same
AssigneeFort James Corporation
InventorDean Swoboda
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Abstract
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.
Claims20
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 dispersed in the paperboard proximate to the bottom surface in an amount effective to not form a barrier to moisture in said press and wherein said paperboard does not blister during rapid heating.
In a method of manufacturing a press-formed paperboard container having a top surface disposed for contact with material to be contained and an opposed bottom surface, the improvement comprising before the container is rapid 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 blistering on the bottom surface during press forming.
Dependencies are inferred from the claim text.