Abstract:
The present invention provides, according to a first aspect a method for manufacturing paper or paperboard, wherein the a) the pulp is treated with CMC or a derivative thereof or an amphoteric CMC derivative, thereby forming a stock , b) filler/pigment is treated with a cationically active polymer with an addition of approximately from 0.015 % to 1.5 %, preferably from 0.03 % to 0.6 %, most preferred approximately 0.3 % ; and c) the thus treated filler/pigment is added to the stock, comprising at least 10 treated fibres (may be up to 100%) according to step a). The present invention also provides, according to a second aspect, paper or paperboard obtainable by the above method according to the first aspect. According to a third aspect of the invention, use of paper or paper board according to the second aspect of the invention for the manufacture of liquid board, communication paper, packaging paper, liner or board is provided.
Abstract:
The present invention provides a method for the manufacturing of nanocellulose. The method includes a first modification of the cellulose material, where the cellulose fibres are treated with an aqueous electrolyte-containing solution of an amphoteric cellulose derivative. The modification is followed by a mechanical treatment. By using this method for manufacturing nanocellulose, clogging of the mechanical apparatus is avoided. Also disclosed is nanocellulose manufactured in accordance with said method and uses of said cellulose.
Abstract:
The invention relates to compositions for coating of printing paper, said compositions comprising microfibrillated cellulose (MFC) and one or more polysaccharide hydrocolloids, and use of said compositions. Further, the invention relates to coated paper, comprising a first layer of polysaccharide hydrocolloid(s) and a second layer of MFC, and use of said paper. A method for reducing the linting and/or dusting of a paper is also disclosed.
Abstract:
The present invention provides a method for treatment of chemical pulp for the manufacturing of microfibrillated cellulose comprising the following steps: a) providing a hemicellulose containing pulp, b) refining said pulp in at least one step and treating said pulp with one or more wood degrading enzymes at a relatively low enzyme dosage, and c) homogenizing said pulp thus providing s aid microfibrillated cellulose. According to a second aspect of the invention a microfibrillated cellulose obtainable by the method according to the first aspect is provided . According to a third aspect of the invention, use of said microfibrillated cellulose according to the second aspect in food products, paper products, composite materials, coatings or in rheology modifiers (e.g. drilling muds) is provided .
Abstract:
The present invention provides a method for treatment of chemical pulp for the manufacturing of microfibrillated cellulose comprising the following steps: a) providing a hemicellulose containing pulp, b) refining said pulp in at least one step and treating said pulp with one or more wood degrading enzymes at a relatively low enzyme dosage, and c) homogenizing said pulp thus providing s aid microfibrillated cellulose. According to a second aspect of the invention a microfibrillated cellulose obtainable by the method according to the first aspect is provided . According to a third aspect of the invention, use of said microfibrillated cellulose according to the second aspect in food products, paper products, composite materials, coatings or in rheology modifiers (e.g. drilling muds) is provided .
Abstract:
The present invention provides, according to a first aspect a method for manufacturing paper or paperboard, wherein the a) the pulp is treated with CMC or a derivative thereof or an amphoteric CMC derivative, thereby forming a stock , b) filler/pigment is treated with a cationically active polymer with an addition of approximately from 0.015 % to 1.5 %, preferably from 0.03 % to 0.6 %, most preferred approximately 0.3 % ; and c) the thus treated filler/pigment is added to the stock, comprising at least 10 treated fibres (may be up to 100%) according to step a). The present invention also provides, according to a second aspect, paper or paperboard obtainable by the above method according to the first aspect. According to a third aspect of the invention, use of paper or paper board according to the second aspect of the invention for the manufacture of liquid board, communication paper, packaging paper, liner or board is provided.