Patents Assigned to Mo ochs Domsjo AB
  • Process for the manufacture of paper pulp from waste paper
    Patent number: 3957572
    Abstract: A process for the manufacture of paper pulp from waste paper in which the waste paper is comminuted in water in a pulper, pre-cleaned for removal of coarse foreign contaminants, dewatered, kneaded at high concentration, diluted, after-cleaned for removal of finer or coherent soft foreign contaminants and adjusted to a concentration suitable for paper-making, the water respectively used for dilution and obtained during dewatering being circulated in two separate circuits upstream and downstream respectively of the kneading apparatus.
    Type: Grant
    Filed: March 13, 1974
    Date of Patent: May 18, 1976
    Assignee: Mo ochs Domsjo AB
    Inventor: Erik Folke Eriksson