Patent ID: 6820799
Filing Date: 2004-11-23
Classification: B65D,Y10S

Abstract:
An expandable envelope construction comprisinga pair of panels folded over each other along a horizontal fold line; at least a first panel of said panels having a horizontally disposed score line spaced from a bottom edge thereof, a horizontally disposed score line spaced from a top edge thereof, a vertically disposed score line spaced from one side edge thereof, a vertically disposed score line spaced from another side edge thereof and a plurality of angularly disposed score lines, each said angularly disposed score line extending from an intersection of a respective horizontally disposed score line and a vertically disposed score line to a respective corner of said first panel; a pair of side flaps at opposite sides of one of said pair of panels, each said flap being folded over said one panel along a vertical fold line therebetween and being secured to the other of said pair of panels to form a pocket; and a closure flap extending from said one of said pair of panels along a horizontal fold line therebetween for folding over the other of said pair of panels to close said pocket, said closure flap having a horizontally disposed score line spaced from said fold line between said closure flap and said one of said pair of panels whereby upon insertion of materials into said pocket, said panels are expandable from each other to enlarge the thickness of said pocket while said pocket is maintained in a sealed condition.