Method and arrangement for coating a moving web of paper or...

D - Textiles – Paper – 21 – H

Patent

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D21H 23/70 (2006.01)

Patent

CA 2321800

The present invention relates to a method of coating a moving web of paper or board from both sides with at least one coat layer. According to the method, the coat is applied to the web by means of a film transfer coater (12) and next the web is passed to a dryer cylinder group (4) via an air-cushion cylinder (18) supported by a wire (14), whereby the web can run fully supported all the way from its entry to the coater up to the winder. The arrangement further comprises a belt calender (8) and a belt-supported winder (9), whereby the web is thus supported over its entire passage in the machinery from the unwinder or paper machine up to winding.

L'invention concerne un procédé de revêtement des deux côtés d'une bande continue de papier ou de carton en mouvement, avec au moins une couche de revêtement. Selon ce procédé, on applique le revêtement sur la bande continue au moyen d'une coucheuse (12) à transfert de film, puis on fait passer la bande continue dans un groupe de cylindres sécheurs (4) à travers un cylindre à coussin d'air (18) soutenu par une toile (14), ce qui permet à la bande continue d'avancer tout en étant entièrement soutenue depuis son entrée dans la coucheuse, jusqu'à la bobineuse. Le dispositif comporte également une calandre à courroie (8) et une bobineuse (9) soutenues par une toile, ce qui permet à la bande continue d'être soutenue tout le long de son passage dans la machine depuis le dévidoir ou la machine à papier, pour son enroulement.

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