Abstract: A paper, board or non-woven product containing a fiber layer containing cellulosic fibers, plant fibers or other material suitable for making a paper, board or non-woven product. One surface of the fiber layer is treated with pigment particles. The web is treated with microscopic particles whose average size is so small as to permit the particles to adhere to each other by van der Waals forces.
Type:
Grant
Filed:
November 4, 2003
Date of Patent:
April 3, 2007
Assignee:
Metso Paper Oy
Inventors:
Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Grönroos, Pentti Virtanen, Veli Käsmä, Hannu Niemelä
Abstract: Apparatus for forming a paper or board web made from fibers in which the web is treated with calcium hydroxide and then with carbon dioxide gas so as to form calcium carbonate.
Type:
Grant
Filed:
October 29, 2003
Date of Patent:
September 7, 2004
Assignee:
Metso Paper Oy
Inventors:
Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Grönroos, Pentti Virtanen, Veli Käsmä, Hannu Niemelä
Abstract: Method and assembly for forming a paper or board web and a product made using the method. According to the method, the web (11) is made from fibers and then the web (11) is treated with pigment particles. The web is treated with microscopic pigment particles whose average size is so small as to permit the particles to adhere to each other by van der Waals forces. The particles are transferred to the web and adhered thereto advantageously using an ion-blast technique.
Type:
Application
Filed:
November 4, 2003
Publication date:
May 20, 2004
Applicant:
Metso Paper Oy
Inventors:
Vilho Nissinen, Timo Nyberg, Pasi Rajala, Lars Gronroos, Pentti Virtanen, Veli Kasma, Hannu Niemela
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