Petri Silenius (Inventor), Jari Meuronen (Inventor), Markku Leskelä (Inventor)

Research output: Patent


The present invention relates to a coated fibrous web and a methofor producing it. According to the present invention, a coated fibrous web comprises a filler-containing base web that has a pigment-containing coating layer on at least one surface. The filler of the base web consists at least partially of cellulose or lignocellulose fibrils, on the surface of which light scattering material particles have been deposited. The filler comprises cellulose or lignocellulose fibrils having an average thickness less than 5µm produced from plant fibres by refining and screening. Considerable advantages are achieved with the present invention. With the help of the composite filler, the formation of the fibrous web can be omproved significantly without impairing the retention, which makes it possible to achieve an extremely smooth substrate for the coating. The smoothness of the surface can also be improved. Furthermore, the fines-based carrier fraction of the fillees not penetrate too much into the fibre network. Due to these reasons even a small amount of coating produces good coverage and quality improving cost-efficiency.
Original languageEnglish
Patent numberWO02092909
IPCD21H17/69 D21H11/16 D21H15/12 (+3)
Priority date24/04/2001
Publication statusPublished - 21 Nov 2002
MoE publication typeH1 Granted patent


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