Patent ID: 6357952
Filing Date: 2002-03-19
Classification: B42C,Y10S

Abstract:
A process for manufacturing blanks for making a pair of detachable one-piece loose-leaf binder covers the process comprising the steps of:(a). cutting a blank in the shape of a first quadrilateral panel defining two opposed pairs of sides; (b). perforating said first quadrilateral panel between two of its sides forming a separation line defining second and third quadrilateral panels connected together by said perforated separation line; (c). cutting a recess in said first quadrilateral panel at each end of said perforated separation line so that each of said second and third quadrilateral panels has four corners; and (d). forming at least one pair of fold lines in each of said second and third quadrilateral panels, said pairs of fold lines spaced away from perforated separation line to define front and rear binder panels, and a smaller spine panel therebetween.