초록 ▼

A packaging blank is scored with several substantially parallel laterally spaced apart score lines adjacent the intended location of a rounded edge on the container produced from the blank. The score lines are formed on the inside surface of the blank which places the score lines inside the containe

A packaging blank is scored with several substantially parallel laterally spaced apart score lines adjacent the intended location of a rounded edge on the container produced from the blank. The score lines are formed on the inside surface of the blank which places the score lines inside the container formed from the blank. When the blank is bent into shape at the rounded edges, a portion of the total deflection is absorbed by each score line whereby the resulting container edge is a gradual curve rather than a single sharp crease. Placing the score lines on the inside of the formed container results in opposing faces of the container being planar and parallel to one another.

대표청구항 ▼

[ What is claimed is:] [1.] A blank with inside and outside surfaces for use in forming a container having a curved edge with a longitudinal axis comprising a plurality of longitudinal, substantially parallel, laterally spaced score lines on the inside surface of the blank for forming the curved edg

[ What is claimed is:] [1.] A blank with inside and outside surfaces for use in forming a container having a curved edge with a longitudinal axis comprising a plurality of longitudinal, substantially parallel, laterally spaced score lines on the inside surface of the blank for forming the curved edge, each of the score lines having a longitudinal axis substantially parallel to the longitudinal axis of the edge whereby when the blank is bent about its longitudinal edge axis, the blank bends at each score line and the edge is therefore curved by virtue of the bending deflection being distributed over the plurality of score lines, wherein the score lines are located inside the formed container, and wherein the curved edge has substantially equal inner and outer curvatures.