Invention Grant
- Patent Title: Method for making of paper, tissue, board or the like
- Patent Title (中): 纸,纸巾,纸板等的制造方法
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Application No.: US14380323Application Date: 2013-02-22
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Publication No.: US09279217B2Publication Date: 2016-03-08
- Inventor: Matti Hietaniemi , Kimmo Strengell , Asko Karppi , Marko Kolari , Jaakko Ekman
- Applicant: KEMIRA OYJ
- Applicant Address: FI Helsinki
- Assignee: KEMIRA OYJ
- Current Assignee: KEMIRA OYJ
- Current Assignee Address: FI Helsinki
- Agency: Thomas Horstemeyer, LLP
- Priority: FI20125204 20120222
- International Application: PCT/FI2013/050201 WO 20130222
- International Announcement: WO2013/124542 WO 20130829
- Main IPC: D21H17/66
- IPC: D21H17/66 ; D21H17/28 ; D21H11/14 ; D21H27/00 ; D21H17/37 ; D21H17/55 ; D21H17/63

Abstract:
The invention relates to a method for making of paper, tissue, board or the like by using recycled fiber material as a raw material. The method comprises following steps: pulping recycled paper, board or the like in a pulper and obtaining a pulp flow comprising (i) an aqueous phase and (ii) at least recycled fibers and starch having low molecular weight, which are dispersed in the aqueous phase; adding a coagulant agent to the pulp flow or to an aqueous process flow comprising starch having low molecular weight; allowing the coagulant agent to interact with the starch having low molecular weight and optionally forming aggregates; and adding at least one flocculating agent, after the addition of the coagulant agent, to any flow, which comprises interacted coagulant agent, and forming a treated flow with starch comprising agglomerate(s); retaining at least part of the said aggregates and/or the said agglomerates to the fibers or to a web, which is formed.
Public/Granted literature
- US20150041092A1 METHOD FOR MAKING OF PAPER, TISSUE, BOARD OR THE LIKE Public/Granted day:2015-02-12
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