Patent ID: 11938747
Assignee: LINXENS HOLDING
Field: Other consumer goods (Other fields)
Classification: CPC B  G | IPC B  G

Claim 18:
19. A method of forming a datapage for a security document, the method comprising
providing a first cover sheet, a second cover sheet and at least one intermediate sheet having a contact end face, said contact end face having non-planar surface portions;
stacking said first cover sheet, said second cover sheet and said at least one intermediate sheet so as to arrange said at least one intermediate sheet between said first and second cover sheets, said first and second cover sheets extending beyond said contact end face so as to form overlapping contact surface portions;
connecting a hinge material sheet to said contact surface portions of said first and second cover sheets and to said contact end face of said intermediate sheet,
wherein said contact end face forms an interdigitated structure with said hinge material sheet, and
said contact surface portions comprise non-planar contact surface portions in order to provide increased adhesion strength when connecting to said hinge material.