Importance

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Abstract

A composite can having improved 'green' strength is made by pattern printing adhesive onto the exterior label or cover such that the adhesive covers less than 100 percent of the surface of the label. The total amount of adhesive applied between the label and the paperboard body wall is thereby reduced, so that less moisture is added on to the paperboard relative to conventional can-making processes in which adhesive is flooded onto the entire surface of the label. A preferred embodiment of the invention comprises an easy-open can, such as a dough can, having the adhesive applied with relatively denser coverage on the portion of the label that overlies the spiral butt joint that is formed between edges of the spirally wound paperboard body ply, and with relatively less dense coverage on other portions of the label. The denser coverage in the butt joint region helps reinforce the butt joint, and the less dense coverage of other portions of the label can permit those portions to be removed from the can substantially intact. A preferred adhesive is polyvinyl acetate adhesive.

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First Claim