Binding for soft cover books

Details Binding for soft cover books Binding for soft cover books

1991-09-09

1992-10-13

Bell, Paul A.

Books, strips, and leaves

Book, element thereof, or accessory therefor

Binding

281 23, 281 35, B42D 104, B42D 106

Patent

active

051544474

ABSTRACT:
A book binding process and apparatus are shown wherein polyurethane adhesive (PUR) attaches a crepe portion of a book binding to a book block and hot glue attaches the crepe portion to the book cover. The PUR delivery system includes an inclined trough positioned adjacent a polyurethane adhesive delivery roll. A polyurethane adhesive source delivers polyurethane adhesive upon the inclined surface of the trough and the polyurethane adhesive is metered onto the roller as a function of the separation of the leading edge of the trough and the roller.

REFERENCES:
patent: 951436 (1910-03-01), Duryea
patent: 998283 (1911-07-01), Duryea et al.
patent: 3437506 (1969-04-01), Falberg
patent: 4299410 (1981-11-01), Jokola
patent: 4547000 (1985-10-01), Sallinen

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