Adhesive binding method and device for carrying out this method

B - Operations – Transporting – 42 – C

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B42C 19/00 (2006.01)

Patent

CA 2538179

In order to produce an adhesive binding for bookbinding, in which the sheets, in quarto format, are perforated on the folding edge, folded, provided with adhesive on the folding edge and assembled to form an inner book, the perforating process is carried out on the folding edge in such a manner that two interrupted perforation lines (12, 13) are punched, these perforation lines being parallel at a short distance from one another, offset in a longitudinal direction, and forming a widened folding edge (14). The punch locations of both perforation lines (12, 13) are, along the folding edge (14), offset by the length of one perforating tooth. The quarto format sheets, which are folded on the folding edge (14) and which are assembled and squeezed to form an inner book, are provided with the application of adhesive on surfaces, which are formed by the double perforating and which are assigned to one another, between full locations of one perforation line (12) and full locations of the other perforation line (13).

L'invention vise à obtenir une reliure sans couture pour relier des livres, où les feuilles, en format in-quarto, sont perforées au niveau de l'arête de pliure, puis sont pliées et munies d'un adhésif, au niveau du bord de pliure et sont assemblées en un corps d'ouvrage. A cet effet, le processus de perforation est mis en oeuvre au niveau de l'arête de pliure, de sorte que deux lignes perforées continues, s'étendant parallèlement l'une à l'autre, à distance réduite et de manière décalée dans le sens longitudinal, qui forment une arête de pliure élargie, soient poinçonnées. Les points de poinçonnage des deux lignes perforées le long de l'arête de pliure sont décalés de la longueur d'une dent de perforation. Les feuillets en format in-quarto des feuilles pliées au niveau de l'arête de pliure, assemblées en un corps d'ouvrage et collées, sont munis d'une application d'adhésif, au niveau de surfaces résultant du double perforage et associées mutuellement, qui se situent entre des pleins d'une ligne perforée et des pleins d'une autre ligne perforée,.

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