D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 21/32 (2006.01) D21C 9/10 (2006.01)
Patent
CA 2209014
The present invention discloses the use of bleaching agents to increase the brightness of filled paper. In the process of the present invention, filled paper is treated with bleaching agents during the papermaking process. The process may be used on all grades of paper that contain filler. However, the present invention is particularly useful on low brightness grade papers that are produced from mechanical pulps and contain a calcium carbonate.
L'invention porte sur l'utilisation d'agents de blanchiment destinés à augmenter la blancheur du papier chargé. Selon ce procédé, le papier chargé est traité avec des agents de blanchiment pendant le processus de fabrication du papier. Ce procédé peut s'appliquer à toutes les qualités de papier qui contiennent une matière de charge. Toutefois, l'invention s'avère particulièrement utile pour des papiers dont le degré de blancheur est peu élevé et qui sont fabriqués à partir de pâtes mécaniques et contenant de carbonate de calcium.
Marks & Clerk
Minerals Technologies Inc.
LandOfFree
Bleaching of filled paper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bleaching of filled paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bleaching of filled paper will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1365969