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.:
Date of Patent:
Jan. 27, 2009
Filed:
Dec. 19, 2002
Applicants:
Aarto Parén, Vaasa, FI;
Jukka Jäkärä, Vaasa, FI;
Ari Juppo, Vaasa, FI;
Reetta Strengell, Vaasa, FI;
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 9/00 (2006.01); D21H 21/00 (2006.01); D21H 21/16 (2006.01); D21H 17/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for manufacturing liquid packaging board, in which process a board pulp is treated with a percarboxylic acid by adding to the pulp percarboxylic acid in an amount of 0.5-5 kg/ton of dry pulp, indicated as a 100 percent percarboxylic acid, whereafter, or simultaneously with the percarboxylic acid treatment, sizing is carried out with a combination of a resin size and a neutral size, which is followed by board forming. The manufactured board has good resistance to liquid penetration.