Web smoothness improvement process

Details Web smoothness improvement process Web smoothness improvement process

D - Textiles, Paper

21

G

D21G 1/00 (2006.01) D21D 1/00 (2006.01)

Patent

CA 2481067

The present invention provides a process for improving smoothness of a web surface by subjecting the web surface to an untreated smooth roll traveling at a different speed than the web and thereby producing heat generated by friction to plasticize the very top fibers in the mat. Surprisingly, the inventors found that no abrasive was needed to generate the amount of heat required to achieve the smoothness gain.

L'invention concerne un procédé d'amélioration de la surface d'une bande continue qui consiste à soumettre cette dernière à un rouleau de lissage non traité dont la vitesse est différente de celle de la bande continue. La chaleur produite par l'effet de friction permet de plastifier les fibres supérieures du mat. Les inventeurs ont constaté avec surprise que la présence d'un abrasif n'était pas nécessaire pour produire la quantité de chaleur requise pour le gain en lissé.

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