Folding cartons for liquids
AssigneePKL Papier- und Kunststoff Werke
InventorsWerner Schadowski, Heinrich Bellut
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Abstract
In a carton for liquids folded from a sheet of packaging material wherein the carton has a lapped seam with a protected edge, the improvement which comprises providing the protected edge with a wedge-like tapered profile, whereby the thickness of the sheet material is reduced along the protected edge. The sheet material carries a thicker protective coating on the inside of the carton and a thinner coating on the outside. The seams are lapped by various configurations of the wedge, depending upon which face is undercut.
Claims6
In a carton for liquids folded from a sheet of packaging material wherein the carton has a lapped seam with a protected edge, the improvement which comprises providing the protected edge with a wedge-like tapered profile, wherein the taper is relatively more pronounced adjacent where it joins the rest of the sheet material and is relatively less pronounced therebeyond toward its tip, whereby the thickness of the sheet material is reduced along the protected edge.
In a carton for liquids folded from a sheet of packaging material wherein the carton has a lapped seam with a protected edge, the improvement which comprises providing the protected edge with a wedge-like tapered profile, wherein the sheet material on the inside has a relatively thicker protective coating and on the outside has a relatively thinner protective coating, whereby the thickness of the sheet material is reduced along the protected edge.
Dependencies are inferred from the claim text.