Bag machine and winder

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 20/02 (2006.01) B31B 19/74 (2006.01) B65H 35/00 (2006.01) B65H 35/08 (2006.01)

Patent

CA 2727368

A method and apparatus for making and winding bags is disclosed. The film approaches the infeed nip on the surface of a roller and on a film guide recessed in the roller for an arc of at least 10, 45, 60 or 90 degrees. The film is preferably guided to one of two alternative film paths. An over speed nip may be provided between the infeed nip and the alterna-tive film paths to separate rolls or to separate all bags. An overlapper can be included. Rods that travel in an elliptical orbit, and/or air nozzles can be part of the overlapper. Air nozzles or a rotating brush can direct the film to the appropriate alternative path. Banders can be used, and can include a conveyor for providing tape to the spindle and two sources of air.

Linvention concerne un procédé et un appareil pour fabriquer et enrouler des sacs. Le film sapproche de la fente dintroduction sur la surface dun rouleau et sur un guide de film en retrait dans le rouleau selon un arc dau moins 10, 45, 60 ou 90 degrés. Le film est de préférence guidé sur un ou deux chemins de film alternatifs. Une fente de survitesse peut être agencée entre la fente dintroduction et les chemins de film alternatifs pour séparer les rouleaux ou pour séparer tous les sacs. Un dispositif de recouvrement peut être inclus. Des tiges qui se déplacent dans une orbite elliptique, et/ou des buses dair peuvent faire partie du dispositif de recouvrement. Des buses dair ou une brosse rotative peuvent diriger le film vers le chemin alternatif approprié. Des cercleurs peuvent être utilisés et peuvent comprendre un convoyeur destiné à acheminer une bande vers la broche et deux sources dair.

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