Patent Number: 6,251,222

Title: Filler for use in paper manufacture and procedure for producing a filler

Abstract: The invention relates to a filled used in paper manufacture and mainly consisting of calcium carbonate, and to a procedure for producing the filler. The filler consists of porous aggregates formed by precipitated calcium carbonate particles. In the procedure, calcium carbonate is precipitated.

Inventors: Silenius; Petri (Kirkniemi, FI), Leskela; Markku (Lohja as, FI)

Assignee: Metsa-Serla

International Classification: C09C 1/00 (20060101); C09C 1/02 (20060101); D21H 17/00 (20060101); D21H 17/69 (20060101); D21H 17/67 (20060101); D21H 17/25 (20060101); D21H 017/70 ()

Expiration Date: 06/26/2018