B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
B31F 1/20 (2006.01) B31F 1/28 (2006.01) B31F 7/00 (2006.01)
Patent
CA 2217798
A method and apparatus for producing a single face corrugated web from an adhesively bonded liner and medium web without the use of a pressure roll nip where the liner web is joined to the medium web. A heated bonding roll with a fluted outer surface carries the single face web around a circumferential portion sufficient to create a green bond in the glue lines before the web is removed from the roll. The bonding roll may be internally heated or a steam chamber may be positioned around a portion of a lower bonding roll, such that the steam chamber introduces a supply of steam into contact with the single face web while the single face web is in contact with the outer circumference of the bonding roll. An adjustable wrap arm places the freshly glued single face web in contact with the bonding roll and tension in the liner web is controlled to adjust the radial force applied to the glue lines.
Procédé et dispositif de fabrication de carton ondulé simple face par contrecollage d'un papier cannelé encollé sur un papier de couverture, sans l'intervention d'un rouleau pinceur. Un cylindre colleur denté et chauffé entraîne le carton de manière que celui-ci soit en contact avec une partie suffisante de la circonférence du cylindre pour que la colle ait le temps de prendre durant le passage du carton. Dans une variante du cylindre colleur, une chambre de vapeur placée sous le cylindre soumet le carton à l'action de la vapeur pendant son passage sur la surface du cylindre. Un bras réglable applique le carton fraîchement collé contre la surface du cylindre colleur, la tension du papier de couverture étant réglée pour obtenir la pression radiale voulue sur les collures.
Borden Ladner Gervais Llp
Marquip Inc.
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