Method for surface sizing paper with 2-oxetanone and rosin...

D - Textiles – Paper – 21 – H

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Details

D21H 23/24 (2006.01) B41M 5/00 (2006.01) B41M 5/52 (2006.01) D21H 21/16 (2006.01) D21H 17/17 (2006.01) D21H 17/28 (2006.01) D21H 17/62 (2006.01) D21H 17/66 (2006.01)

Patent

CA 2296448

There is disclosed a method for sizing paper by adding to the surface of the paper a sizing composition comprising a rosin and a 2-oxetanone. The sized paper performs better in ink jet printing than does paper that is the same except that the size composition contains only rosin or only 2-oxetanone, when the printing is evaluated for at least one property selected from the group consisting of optical density, feathering, wicking, edge roughness and bleed. The sized paper also has higher toner adhesion, a higher coefficient of friction and a lower coefficient of friction bandwidth than does paper that is the same except that the size composition contains only 2-oxetanone. The paper is also capable of performing effectively in tests that measure its convertibility on state-of-the-art converting equipment and its performance on high speed end-use machinery.

Procédé de couchage de papier par ajout sur la surface dudit papier d'une composition de couchage comportant une colophane et une 2-oxétanone. Le papier ainsi couché offre une meilleure performance en cas d'impression à jet d'encre que le papier identique mais pour lequel la composition de couchage contient uniquement de la colophane ou uniquement de la 2-oxétanone, lorsque l'impression est évaluée en tenant compte d'au moins une propriété choisie parmi la densité optique, les bavures, l'effet de mèche, la précision des limites et le déteintage. Le papier ainsi couché présente une meilleure adhérence du toner, un coefficient de frottement plus élevé et une largeur de bande de coefficient de frottement plus faible que le papier identique mais dont la composition de couchage ne contient que de la 2-oxétanone. Ledit papier est également capable d'obtenir des bons résultats dans des analyses destinées à mesurer sa transformabilité sur un équipement de transformation correspondant à l'état le plus récent de la technique et ses performances sur des machines d'utilisation finale fonctionnant à grande vitesse.

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