Patents Assigned to Gechem and Recticel
  • Method for forming a gellified polyurethane layer on a surface
    Patent number: 5071683
    Abstract: Method and device for forming a gellified polyrethane layer on a surface, notably of a mould, by spraying a liquid reaction mixture comprising polyol and isocyanates and which has a viscosity between 20 and 2000 centipoises. The mixture is sprayed in the form of a film of liquid and/or raindrops of which the main part has a mean diameter (Medium Volume Diameter; "M.V.D.") which, according to the standards ASTM E 779-81, is larger than 100 microns and preferably larger than 500 microns.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: December 10, 1991
    Assignee: Gechem and Recticel
    Inventors: Jacques Verwilst, Hugo De Winter, Andre Braeckman, Bernard De Baes