tailieunhanh - Use of fillers in paper and paperboard grades

The constituents of soil—namely mineral, organic matter, water, air, etc.—play an important role in providing the right environment for plant growth. The organic matter of the soil has the most important role to play, as it is primarily responsible for making the soil loose and porous, thereby preventing packing of minerals and aids in aeration and penetration by water. Also the organic matter of the soil improves the water retention capability of the soil to a great extent. The presence of organic matter in the soil not only helps the growth of crops but also in the sustaining the lives of many biological micro organisms in the soil. . | Tampere University of Applied Sciences International Pulp and Paper Technology Jarkko Gronfors Final Thesis Use of fillers in paper and paperboard grades Supervisor Commissioned by Tampere 5 2010 Dr. Tech. Ulla Haggblom-Ahnger Nordkalk Corp. . Lars Gronroos Tampere University of Applied Sciences International Pulp and Paper Technology Jarkko Gronfors Writer Thesis Pages Graduation time Thesis Supervisor Commissioned by Jarkko Gronfors Use of fillers in paper and paperboard grades 36 05 2010 Dr. Tech. Ulla Haggblom-Ahnger Nordkalk Corp. . Lars Gronroos ABSTRACT In this work the use of fillers in paper and paperboards grades are examined. The idea was to get to know the concept of fillers and how to use more of them in papermaking. Replacing fibres with fillers is a major theme in this work. This work was done in order to familiarize the field of paper industry and its uses of fillers. Fillers are used in nearly every paper and paperboard grade. Filler use has increased during the last decades and continues to do so. Fillers bring special properties for paper products that could not be achieved in any other way. In the beginning of work fillers and their properties were viewed. These fillers were ground calcium carbonate kaolin precipitated calcium carbonate talc and titanium dioxide the most common paper fillers. This is followed by the categorization of majority of paper and paperboard grades in the world. The furnish composition of these grades are analyzed and end uses of several grades were evaluated. Another target of this work was to find out about current paper and paperboard markets. Statistics about paper production and consumption were explored. Data from future projections of paper consumption was examined too. In these predictions the largest growth of consumption of all paper is located in Asia with China being the most important country. Overview of the markets tells potential grades whose consumption is rising. In the near future .

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