Process for repulping wet strength paper

Details Process for repulping wet strength paper Process for repulping wet strength paper

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21C 9/16 (2006.01)

Patent

CA 2178079

Process for repulping wet strength paper containing at least one wet strength resin in which the initial breakdown of the paper is conducted at a first pH and the substantial completion of the conversion to fibers is conducted at a second pH which is higher than the first pH.

L'invention se rapporte à un procédé de refonte du papier résistant à l'état humide qui contient au moins une résine résistant à l'état humide, procédé dans lequel la désintégration initiale du papier est effectuée à un premier niveau de pH et la conversion quasi totale en fibres est effectuée à un second niveau de pH qui est supérieur au premier.

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