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1. (WO2017063971) PROCESS FOR THE DEINKING OF COATED PAPER OR PAPERBOARD

Pub. No.:    WO/2017/063971    International Application No.:    PCT/EP2016/074129
Publication Date: Fri Apr 21 01:59:59 CEST 2017 International Filing Date: Tue Oct 11 01:59:59 CEST 2016
IPC: D21C 5/02
D21H 19/40
D21H 19/44
D21H 19/52
D21H 19/54
Applicants: OMYA INTERNATIONAL AG
Inventors: GANE, Patrick A.C.
RENTSCH, Samuel
WELKER, Matthias
RIDGWAY, Catherine Jean
Title: PROCESS FOR THE DEINKING OF COATED PAPER OR PAPERBOARD
Abstract:
A process for the deinking of a coated paper or paperboard is disclosed, the process comprises a step of providing a coating layer comprising a calcium- or magnesium-exchanged clay which is deposited on the paper or paperboard before the ink layer. In a further step said calcium- or magnesium-exchanged clay is activated and the paper is subsequently treated with water.