Patents Assigned to ATOCHEM Puteaux
  • Thermoformed poly (methyl methacrylate) sheets with protective film and adhesion layer
    Patent number: 5275866
    Abstract: A process for thermoforming a sheet of poly(methyl methacrylate) which has a reduced viscosity of at least 1.5, protected on at least one of its faces, by a film, in intimate contact with it. The film is an ethylene polymer which has undergone a corona discharge treatment. The ethylene polymer film is coated with a layer of acrylic adhesive after the ethylene polymer film has undergone the corona treatment.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: January 4, 1994
    Assignee: ATOCHEM Puteaux
    Inventors: Jean P. Leca, Jean Y. Barbin