Patents Assigned to Kaukas Oy
  • Process for wetting a paper web during calendering using coating with water-containing microcapsules
    Patent number: 5076888
    Abstract: The invention relates to a process for wetting a paper web in a calendering step by using water-containing microcapsules in the surface structure layer of the paper web, said microcapsules being ruptured in the calendering step whereby water is released. The invention also relates to microcapsules comprising a water-impermeable shell and an interior substantially comprising water, and having a diameter of 0.1 to 100 .mu.m and a shell thickness of 0.01 to 5 .mu.m.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: December 31, 1991
    Assignee: Kaukas Oy
    Inventor: Markku S. Korpela