Books – strips – and leaves – Book – element thereof – or accessory therefor – Covers
Patent
1975-02-03
1976-06-22
Schnall, Jerome
Books, strips, and leaves
Book, element thereof, or accessory therefor
Covers
B42D 300
Patent
active
039647706
ABSTRACT:
By means of only slightly modified case making equipment, a hard case for a book is provided with a pad which is attached to the spine edge of an uncased book by pressure-sensitive adhesive. This pad comprises a strip of foam of a material such as polyurethane of a length substantially the same as that of the cover boards for the case and a width slightly less than the gap between adjacent boards which is fastened to the cover material by the same adhesive which causes the cover material to adhere to the boards. In order to provide a non-porous surface for the foam, the latter may be covered by a layer of vinyl, the latter being of the same length and width as the pad and stuck thereto by a suitable adhesive. A layer of pressure-sensitive adhesive material is applied to the vinyl and a protective release paper covers the pressure-sensitive adhesive. The adhesive and release paper are spaced inward at top and bottom from the top and bottom edges of the boards. In production of the case the top and bottom of the cover material are turned in to cover the edges of the boards and such turn-ins also cover the ends of the pad but not the release paper. In use, the release paper is stripped off exposing the pressure-sensitive material. The spine edge of the uncased book is forced against the pressure-sensitive material. End leaves of the book are caused to adhere to the boards.
REFERENCES:
patent: 1495467 (1924-05-01), White
patent: 1602816 (1926-10-01), Fellows
patent: 1991608 (1935-02-01), Frazier
patent: 3059946 (1962-10-01), Paddack
patent: 3188114 (1965-06-01), O'Brien et al.
patent: 3210093 (1965-10-01), Steidinger
patent: 3306631 (1967-02-01), Bernson
Abildgaard William H.
Groswith III Charles T.
Caplan Julian
Schnall Jerome
Velo-Bind Inc.
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