- Patent Title: Method for manufacturing paper or board and paper or board product
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Application No.: US16496975Application Date: 2018-03-26
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Publication No.: US11136722B2Publication Date: 2021-10-05
- Inventor: Elisabeth Lackinger-Csarmann , Johannes Fallmann , Alexander Wahl , Thomas Schwind , Jürgen Sartori , Samuel Okoli
- Applicant: Kemira Oyj
- Applicant Address: FI Helsinki
- Assignee: Kemira Oyj
- Current Assignee: Kemira Oyj
- Current Assignee Address: FI Helsinki
- Agency: Meunier Carlin & Curfman LLC
- Priority: FI20175282 20170327
- International Application: PCT/FI2018/050225 WO 20180326
- International Announcement: WO2018/178513 WO 20181004
- Main IPC: D21H21/16
- IPC: D21H21/16 ; D21H11/14 ; D21H17/02 ; D21H17/15 ; D21H17/67 ; D21H17/00 ; D21H27/10 ; D21H27/22
Abstract:
A manufacturing method of a paper, board or the like having a grammage in a range of 125-600 g/m2, preferably 150-210 g/m2, including adding a paper sizing agent including maleated vegetable oil and an alkenyl succinic anhydride (ASA) to a fibre stock including at least 80 weight-% of recycled fibre material and having calcium concentration of at least 500 mg/l, expressed as CaO.
Public/Granted literature
- US20210102342A1 METHOD FOR MANUFACTURING PAPER OR BOARD AND PAPER OR BOARD PRODUCT Public/Granted day:2021-04-08
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