Title:
フィラーの製造方法
Document Type and Number:
Japanese Patent JP6759202
Kind Code:
B2
Abstract:
The invention discloses a method of producing a filler composition to be used in paper or board production, said method comprising providing a suspension comprising calcium hydroxide and performing carbonation of the calcium hydroxide to form precipitated calcium carbonate (PCC). The invention is characterized in that starch and/or carboxy methyl cellulose (CMC) is added to the suspension during said carbonation of calcium hydroxide. The method of the invention enables an increased filler content in paper or paperboard without substantially increasing the dusting tendency or decreasing the strength of the paper or board.
Inventors:
Hakanson, Philip
Application Number:
JP2017527210A
Publication Date:
September 23, 2020
Filing Date:
November 19, 2015
Export Citation:
Assignee:
OMYA International AG
International Classes:
D21H17/67; C01F11/18; D21H17/25; D21H17/28
Domestic Patent References:
| JP2006527151A | ||||
| JP2001139328A | ||||
| JP2002540056A |
Foreign References:
| WO2007067146A1 |
Attorney, Agent or Firm:
Suzue International Patent Office