Apparatus for and method of binding a book

Details Apparatus for and method of binding a book Apparatus for and method of binding a book

B - Operations, Transporting

42

B

B42B 5/00 (2006.01) B29C 65/08 (2006.01) B42C 7/00 (2006.01) B42C 9/00 (2006.01) B42C 11/06 (2006.01) B42C 13/00 (2006.01) B42D 1/00 (2006.01)

Patent

CA 2318872

A system for the perfect binding of a book block (14) within a soft paper cover is disclosed in which the center portion (18) of the cover is sized relative to the thickness of the book to be bound. An activatable adhesive is applied to the inner surface of the center portion of the cover. The book block is inserted into the cover such that the spine (S) of the book block is generally in register with the adhesive. The cover is forcibly compressed onto the book block by pressing members (60a, 60b). An ultrasonic horn (66) is brought into forcible working engagement with the outer surface of the center portion of the cover and is rendered resonant so as to transmit ultrasonic energy to the adhesive sufficient to melt the adhesive and to force the adhesive into the edges of the pages of the book block along the spine and to force the pages of the book block into the adhesive along the center portion of the cove such that upon the cessation of the ultrasonic energy the adhesive hardens substantially instantaneously thus binding the cover to the book block. A method of binding a book is also disclosed.

Cette invention concerne un système qui permet d'effectuer la reliure parfaite d'un corps d'ouvrage (14) à l'intérieur d'une couverture en papier souple. La partie centrale (18) de la couverture possède une taille qui est fonction de l'épaisseur du livre à relier. Un adhésif activable est appliqué sur la surface interne de la partie centrale de la couverture. Le corps d'ouvrage est ensuite inséré dans la couverture de sorte que son dos (S) soit globalement aligné sur l'adhésif. La couverture est ensuite comprimée en force contre le corps d'ouvrage à l'aide d'éléments presseurs (60a, 60b). Un cornet ultrasonique (66) est mis en contact de travail forcé contre la surface externe de la partie centrale de la couverture. On fait résonner ce cornet de manière à transmettre à l'adhésif une énergie ultrasonique qui est suffisante pour le faire fondre. On force ainsi l'adhésif à passer dans les bords des pages du corps d'ouvrage le long du dos, les pages du corps d'ouvrage étant également forcées de pénétrer dans l'adhésif le long de la partie centrale de la couverture. Lorsque l'on interrompt l'émission d'énergie ultrasonique, l'adhésif se solidifie instantanément et relie la couverture au corps d'ouvrage. Cette invention concerne également un procédé de reliure d'un livre.

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