Cover and method and device for manufacturing the same

Details Cover and method and device for manufacturing the same Cover and method and device for manufacturing the same

1994-04-08

1996-12-03

Han, Frances

Books, strips, and leaves

Book, element thereof, or accessory therefor

Covers

281 211, 412 4, 412 19, 412 29, B42C 700

Patent

active

055800971

ABSTRACT:
A cover comprising a spine (3), a strip of binding agent (4) connected to the spine, and two cover sides 1, 2) which are connected with the spine by means of a first pair of creasing lines (5, 6) extending parallel to the strip, the cover sides also being provided with a second pair of of creasing lines (7, 8) extending parallel to the strip, which creasing lines are at at short distance from the first pair and along which the cover sides are folded on opening and closing of the booklet, a sheaf of papers (20) being intended to be inserted into the cover with one side edge of the same in contact with the strip, such that on melting and subsequent cooling of the strip, the sheaf of papers will be connected to the spine to form a finished booklet. The second pair of creasing lines are deformed in such a way that when the cover sides of the cover are essentially parallel, the two portions (9, 10) between the two pairs of creasing lines exert an inwardly directed pressure against the not yet melted strip. The invention also relates to a method and a device for manufacturing the cover.

REFERENCES:
patent: 4091487 (1978-05-01), Axelrod
patent: 5062754 (1991-11-01), Bolin et al.
patent: 5330229 (1994-07-01), Zoltner

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