Patent ID: 6155763
Filing Date: 2000-12-05
Classification: B42C

Abstract:
A bookbinding system for binding a stack of sheets, with the stack having a length, a width and a thickness, said system comprising:a cover/spine assembly which includes(a) a relatively rigid first cover section having a width at least as great as the width of the stack and a length at least as great as great as the length of the stack and(b) a spine section having a length which corresponds to the length of the first cover section and a width which is greater than the thickness of the stack with a first edge of the spine section along the length of the spine section being secured to a first edge of the first cover section along the length of the first cover section so that the spine section can be folded with respect to the first cover section; andan adhesive matrix disposed on the spine section, said adhesive matrix including a heat-activated, relatively low viscosity, central adhesive band extending along the length of the spine section and a heat-activated, relatively high viscosity outer adhesive band extending along the length of the spine section intermediate the central adhesive band and a second edge of the spine section, opposite the first edge.