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. 21, 2015
Filed:
May. 29, 2012
Hannu Lepomäki, Tampere, FI;
Esko Kukkamäki, Kangasala, FI;
Mika Laitila, Hämeenlinna, FI;
Mikko Vuori, Jämsä{umlaut over ( )}, FI;
Hannu Lepomäki, Tampere, FI;
Esko Kukkamäki, Kangasala, FI;
Mika Laitila, Hämeenlinna, FI;
Mikko Vuori, Jämsä{umlaut over ( )}, FI;
UPM-KYMMENE CORPORATION, Helsinki, FI;
Abstract
The invention relates to a method for manufacturing a printing paper product, in which method natural fibres are introduced into a system which includes a paper machine. In the method, calcium hydroxide and carbon dioxide are admixed to natural fibres, for precipitating calcium carbonate onto the surfaces of the natural fibres, and said printing machine is used for manufacturing a printing paper product which includes at least said natural fibres, with calcium carbonate precipitated on their surfaces, as a filler for said printing paper product. The invention also relates to a system for manufacturing a printing paper product. Further, the invention relates to a calendered printing paper product which has not been coated with a pigment.