Universal binding for making variable sized books and reports

Books – strips – and leaves – Book – element thereof – or accessory therefor – Binding

Patent

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Details

281 29, 412 37, B42D 300, B42C 900

Patent

active

043711944

ABSTRACT:
A book cover structure of the type having front and back covers for binding sheets therebetween. A backbone area is joined with the front and back covers. The backbone area is provided with spaced parallel strips of hot melt adhesive with transversely extending bridge means of hot melt adhesive extending therebetween the width of the backbone area. Spaced score lines are positioned between the parallel strips under the bridges in parallel relation relative to the strips to enable the user to flex the binding along selectable score lines relative to the backbone area. The bridge means of hot melt adhesive and the strips comprise means for holding sheets in bound engagement with the backbone area. The bridge means of hot melt adhesive extend across the score lines and thus provide continuity of adhesive on opposite sides of and across the score lines. At least one of the covers may have a second set of spaced parallel score lines adjacent an outer edge remote from the backbone area and disposed in parallel relation relative to the strips. At least one of the score lines in the second set may be folded leaving the outer edge in lapped relation relative to the associated cover, the score lines in the second set being selectably usable depending on the number of the sheets to be bound.

REFERENCES:
patent: 3847718 (1974-11-01), Watson
patent: 3933375 (1976-01-01), Humphrey
patent: 3957287 (1976-05-01), Hall
patent: 3973787 (1976-08-01), Staats
patent: 4129471 (1978-12-01), Rome
patent: 4139216 (1979-02-01), Saint Clair
patent: 4289330 (1981-09-01), Wiermanski

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