Method for coating a web of paper or paperboard and a coated...

Details Method for coating a web of paper or paperboard and a coated... Method for coating a web of paper or paperboard and a coated...

D - Textiles, Paper

21

H

D21H 23/50 (2006.01)

Patent

CA 2439703

A method is disclosed for manufacturing a web of paper and paperboard, in which method a spray-coating technique is used for applying a web treatment substance to at least one surface of a moving web. The qualities of the web treatment substance are selected such that at least the droplet size and viscosity of the web treatment substance are controlled such as to make the thickness of the applied web treatment substance essentially equal in at least two randomly selected sample areas. By the definition of the invention, this means that the applied coating conforms with the surface contour of the base sheet. The publication also discloses a paper manufactured using the method.

La présente invention concerne un procédé pour produire une bande de papier ou de carton. Ce procédé met en oeuvre une technique de couchage par pulvérisation, afin d'appliquer une substance de traitement de bande sur au moins une surface d'une bande en mouvement. Les qualités de la substance de traitement de bande sont choisies de façon qu'au moins la taille et la viscosité des gouttelettes de la substance de traitement de bande soient commandées, afin de rendre l'épaisseur de la substance de traitement de bande appliquée sensiblement identique dans deux zones échantillons choisies au hasard. Le couchage appliqué se conforme ainsi au contour superficiel de la feuille de base. La présente invention concerne également un papier produit selon le procédé susmentionné.

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