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:
Jul. 22, 2014
Filed:
Jun. 27, 2006
Kimmo Koivunen, Espoo, FI;
Petri Silenius, Lohja, FI;
Janne Laine, Espoo, FI;
Tapani Vuorinen, Espoo, FI;
Kimmo Koivunen, Espoo, FI;
Petri Silenius, Lohja, FI;
Janne Laine, Espoo, FI;
Tapani Vuorinen, Espoo, FI;
Sappi Netherlands Services B.V., Maastricht, NL;
Abstract
The invention relates to a method for dissolving cellulose e.g. for the production of regenerated cellulose products such as films, fibers, particles and the like. In said method, the cellulose material is dissolved using an enzymatic treatment, followed by a base treatment. The invention is also directed to a method for producing cellulose particles wherein cellulose dissolved as described above is sprayed or mixed into a regenerating solution for precipitating cellulose particles. Moreover, the invention relates to the use of said cellulose particles produced with this method as a filler and/or coating pigment of paper and board. The invention is also directed to methods for producing and coating paper and board.