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Machine translation
1. (WO1979000839) METHOD OF AND APPARATUS FOR THE AGGLUTINATION OF SHEETS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000839    International Application No.:    PCT/DK1979/000012
Publication Date: 18.10.1979 International Filing Date: 27.03.1979
IPC:
B42C 9/00 (2006.01)
Applicants:
Inventors:
Priority Data:
1338/78 28.03.1978 DK
Title (EN) METHOD OF AND APPARATUS FOR THE AGGLUTINATION OF SHEETS
(FR) METHODE ET APPAREIL D"AGGLUTINATION DE FEUILLES
Abstract: front page image
(EN)A method for the agglutination of a plurality of sheets (2), more particularly of paper, arranged in a stack. A punching mechanism (1) provided with a channel through which melted or dissolved adhesive can be dispensed is passed through the stack to cut a throughgoing hole (9). Said hole is formed by U-shaped, serrated or corrugated slits presenting in each sheet one or more tongues (10) which the downward movement of the punching mechanism causes to bend away from their original positions while at the same time adhesive is introduced into the hole. The retraction of the punching mechanism causes the tongues to unbend and return to their original positions, which has the effect of introducing the adhesive between the individual sheets and accomplishing the agglutination. The invention further relates to an apparatus for the embodiment of the method according to the invention. The apparatus comprises a support (3) for holding a stack of sheets (2) and a cutting mechanism (1) with an end face (13) of an angular or corrugated cross section. Said cutting mechanism is provided with a hollow shaft (6) and means (14, 15, 17, 18, 19) for depositing adhesive on the punched-out tongues. Furthermore, the apparatus is provided with means (12, 16) for returning after the application of adhesive to the tongues and retraction of he punching mechanism the bent-down tongues to their original positions.
(FR)Methode d"agglutination d"une pluralite de feuilles (2), plus particulierement des feuilles de papier, empilees. Un mecanisme de poinconnage (1) possede un canal, au travers duquel une colle fondue ou dissoute peut etre introduite, et decoupe dans la pile un trou de coulee (9). Cet orifice a une forme en U; les incisions dentelees ou striees presentent a chaque feuille une ou plusieurs langues (10) qui sont pliees par rapport a leur position normale a cause du mouvement descendant du mecanisme de poinconnage, en meme temps que la colle est introduite dans le trou. Le retrait du mecanisme de poinconnage provoque le repli des langues qui reprennent leur position d"origine et effectue l"introduction de la colle entre les feuilles individuelles et ainsi que leur agglutination. Appareil pour mettre en application la methode de l"invention. L"appareil comprend un support (3) pour tenir une pile de feuilles (2) et un mecanisme a couper (1) dont une face extreme (13) possede une section angulaire ou striee. Ledit mecanisme de coupe possede un arbre creux (6) et des moyens (14, 15, 17, 18, 19) pour deposer de la colle sur les langues poinconnees. En outre, l"appareil possede des moyens (12, 16) pour remettre les langues pliees vers le bas dans leur position d"origine, apres application de la colle sur les langues et retrait du mecanisme de poinconnage.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)