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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8974637 B1

PDFFull Text
Date of Patent:
Mar. 10, 2015

Filed:

Jun. 05, 2012

Process for the production of paper and board

Applicant:

Patrik Simonson, Savedalen, SE;

Inventor:

Patrik Simonson, Savedalen, SE;

Assignee:

Akzo Nobel Chemicals International B.V., Amersfoort, NL;

Attorney:

Alice C. Su

Primary Examiner:

Jose Fortuna

Int. Cl.
CPC ...
D21F 11/00 (2006.01); D21H 17/69 (2006.01); D21H 17/24 (2006.01); D21H 17/28 (2006.01); D21H 17/29 (2006.01); D21H 17/25 (2006.01); D21H 17/45 (2006.01); D21H 17/00 (2006.01); D21H 17/37 (2006.01); D21H 17/44 (2006.01); D21H 17/55 (2006.01); D21H 17/56 (2006.01); D21H 17/66 (2006.01); D21H 17/67 (2006.01); D21H 17/68 (2006.01); D21H 23/04 (2006.01); D21H 23/06 (2006.01); D21H 23/12 (2006.01); D21H 21/10 (2006.01);
U.S. Cl.
CPC ...
D21H 17/74 (2013.01); D21H 17/25 (2013.01); D21H 17/28 (2013.01); D21H 17/37 (2013.01); D21H 17/375 (2013.01); D21H 17/44 (2013.01); D21H 17/55 (2013.01); D21H 17/56 (2013.01); D21H 17/66 (2013.01); D21H 17/67 (2013.01); D21H 17/675 (2013.01); D21H 17/68 (2013.01); D21H 23/04 (2013.01); D21H 23/06 (2013.01); D21H 23/12 (2013.01); D21H 17/69 (2013.01); D21H 21/10 (2013.01);
Abstract

The present invention relates to a process for the production of paper and board which comprises: (a) introducing one or more fillers, one or more anionic polysaccharides and one or more cationic agents into a mixing zone to form a filler composition; (b) introducing by means of a pump the filler composition into an aqueous suspension comprising cellulosic fibers; and (c) dewatering the obtained suspension. The present invention also relates to a process for the production of a filler composition which comprises: (a) introducing one or more fillers, one or more anionic polysaccharides and one or more cationic agents into a mixing zone to form a filler composition; (b) introducing by means of a pump the filler composition into a storage tank.

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