Patents Assigned to Stuart Plastics Ltd.
  • Method of finishing plastic surfaces
    Patent number: 6037415
    Abstract: A composition for use in the finishing of a polymer surface comprises a dry, stable homogeneous mixture of pigment and a thermoplastic resin compatible with the polymer surface. The homogeneous mixture is soluble in a solvent to form a lacquer, for application to the surface, that has a colour determined by the amount and chromatic characteristics of the pigment in the dry mixture. The composition can be delivered to a customer and conveniently mixed on site to produce a lacquer having the desired colour characteristics.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: March 14, 2000
    Assignee: Stuart Plastics Ltd.
    Inventor: Gordon Pawelchak
  • Refinishing of the surfaces of bodies of a thermoplastic resin
    Patent number: 4247580
    Abstract: A process for refinishing the surface of a body of acrylo-butadiene-styrene (ABS) polymer by applying to the surface a coating material and treating the body with a solvent. The surface is cooled, together with at least the material underlying the surface, to a temperature in the range about 32.degree. F. to 40.degree. F. The surface of the body is then contacted with a solvent vapor for a time sufficient to reflow the surface but not to warm appreciably the inner layer of the body. The process avoids distortion in the refinished surface.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: January 27, 1981
    Assignee: Stuart Plastics Ltd.
    Inventor: Andy P. Chao
  • Refinishing of the surfaces of bodies of a thermoplastic
    Patent number: 4133912
    Abstract: A process for refinishing the surface of a body of a thermoplastic resin by subjecting the surface to treatment with a solvent. The surface is cooled, together with at least the material underlying the surface, to a temperature below the temperature at which the solvent can readily dissolve the resin. The surface of the body is then contacted with a solvent for a time sufficient to dissolve the surface but not to warm appreciably the inner layer of the body. The process avoids distortion in the refinished surface.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: January 9, 1979
    Assignee: Stuart Plastics Ltd.
    Inventor: Manfred Stuart