Patents Assigned to Datapac S.r.l.
  • Process and apparatus for the sealing of paper sheets
    Patent number: 5116302
    Abstract: In the sealing of paper sheets, particularly envelopes, such as for example self-enveloping forms, by knurling of the edges to be joined together, the preliminary moistening of the same edges is provided, which leads to a seal tight closure or sealing.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: May 26, 1992
    Assignee: Datapac S.r.l.
    Inventors: Armando Speroni, Aldo Bedodi