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1. (WO2018078572) A METHOD TO FORM A WEB COMPRISING FIBERS

Pub. No.:    WO/2018/078572    International Application No.:    PCT/IB2017/056681
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 28 01:59:59 CEST 2017
IPC: D21H 11/18
D21H 17/70
D21H 23/02
D21H 17/03
D21H 17/20
Applicants: STORA ENSO OYJ
Inventors: BACKFOLK, Kaj
HEISKANEN, Isto
SAUKKONEN, Esa
Title: A METHOD TO FORM A WEB COMPRISING FIBERS
Abstract:
The invention discloses a method to enable the efficient use of surfactants in web forming of a cellulose containing material, e.g. in the making of paper or paperboard. The method comprises the addition of microfibrillated cellulose (MFC) or nanocrystalline cellulose (NCC) to the white water in a web-forming process in order to form complexes with surface active agents. The formed complexes are at least partly recycled to the process. This enables the producer to have control over the concentration of surface active agents in the system.