Patent ID: 8025618
Filing Date: 2011-09-27
Classification: B31B,B65D

Abstract:
1. A method of forming carton blanks comprising: (a) providing a moving first web of material moving along a direction of travel; (b) providing a moving second web of material moving along the direction of travel; (c) repeatedly forming a first pattern of lines of disruption in the first web, the first pattern including at least one section therein which is entirely defined relative to the remainder of the first web by at least one line of disruption, at least a portion of the at least one line of disruption extending nonparallel with the direction of travel; (d) repeatedly forming a second pattern of lines of disruption in the second web; (e) applying adhesive to at least one of the first and second webs in a predetermined pattern which includes a non-adhesive area corresponding to at least all of each at least one section; (f) following steps (a) through (e), adhering the first and second webs of material together in face-to-face contact while they are substantially flat to form a combined web that is substantially flat moving along a direction of travel, with each first pattern of lines of disruption overlying a second pattern of lines of disruption such that each at least one section included in the first pattern of lines of disruption in the first web is not adhered to the second web; and (g) separating the combined web into carton blanks, at least a portion of each carton blank comprising two layers of material, with one of the first patterns of lines of disruption in the first layer and one of the second patterns of lines of disruption in the second layer, wherein the at least one section is capable of folding away from the second layer and capable of folding relative to the remainder of the first layer.