Patents Assigned to Papeteries de Gascogne
  • Patent number: 4943349
    Abstract: Process for using papermaking techniques for preparing a sheet material with improved on-machine retention, sheet material thus obtained and its application, notably in the field of printing and writing, packaging and coverings.The invention relates to a process for using papermaking techniques to make a sheet material.This material copmrises, in addition to the fibres, an organic binder, a non-binding mineral filler and a flocculant, as well as various conventional additives, this process being characterized by the fact that the mineral filler and the binder are flocculated beforehand before being incorporated into the fibre suspension.The material thus prepared has enhanced mineral filler retention and physical properties and can be used as printing and writing medium, covering medium, packaging medium or for obtaining complexes for industrial or foodstuffs use.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: July 24, 1990
    Assignee: Papeteries de Gascogne
    Inventor: Daniel Gomez