Upm-kymmene Corporation

Upm-kymmene Oyj Corporation

Upm Paper Ena Oy

Tarja Sinkko

Markus Nuopponen

Juha Tamper

Sami Turunen

Isko Kajanto

Hannu Mikkonen

Taisto Tienvieri

Leila Pohjola

Mikko Oksanen

Janne Varvemaa

Kyösti Haapoja

Soili Peltonen

Teuvo Leppänen

Mari Ojanen

Nina Pykäläinen

Tuomo Pappila

Leena Kunnas

Lars Åsmus

Method for making modified cellulose products comprises &#x2014;processing cellulose pulp to modified cellulose pulp at a manufacturing location to increase the susceptibility of fibers to disintegration, &#x2014;setting the modified cellulose pulp to a suitable dry matter content, and &#x2014;transporting the modified cellulose pulp at set dry matter content to a location of use, where the modified cellulose pulp is disintegrated to nanofibrillar cellulose.

Method for making modified cellulose products

The invention relates to a paper product formed from fiber-based pulp to which a material component of plant origin is added. According to the invention, the material component of plant origin is a material which is formed from small particles and which is formed from a source material of plant origin selected at least mainly from the group of bark free wood, stem parts of plants and their combinations and their derivatives, and the paper product contains 4 to 50 vol-% of the material component of plat origin, substantially to increase the printing area in the paper product relative to the bulk of the paper. In addition, the invention relates to a process for manufacturing a paper product.

Paper product and process for making same

The invention relates to a paper that is formed of a fiber-based source material and is applicable as printing paper. According to the invention, the surface of the paper is surface-treated by arranging on the surface sufficient density in such manner that the density of at least one surface layer of the paper is sufficiently high to yield a Gurley-Hill value of over 7000 s/100 ml as measured from the entire paper. Furthermore, the invention relates to a method for making paper.

Paper and method for making paper

The invention relates to a paper that is formed of a fiber-based source material and is applicable as printing paper. According to the invention, the surface of the paper is surface-treated by arranging sufficient density on the surface, such that a mixture is arranged at least on one side of the surface of the paper for forming a surface layer, which mixture comprises pigments in an amount of 75-95% by weight of the dry weight and bonding agent in an amount of 5-25% by weight of the dry weight, and the porosity of the surface layer of the paper is less than 0.07 ml/g as defined by mercury porosimeter process. Furthermore, the invention relates to a method for making paper.

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Lappeenranta, Finland

Tarja Sinkko