Refinishing of the surfaces of bodies of a thermoplastic resin
AssigneeStuart Plastics Ltd.
InventorAndy P. Chao
Life of this patent
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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.
Claims9
A process for applying a new finish to the surface of a body made from acrylo-butadiene-styrene (ABS) polymer, the process comprising coating the body with a layer of ABS, cooling at least the surface of the coated body to a temperature in the range about 32.degree. F. to about 40.degree. F. then contacting the surface of the body with a solvent vapor for a time sufficient to flow the surface but not to warm appreciably the inner layer of the body.
A process for refinishing a telephone set of ABS polymer that comprises subjecting the body to a preliminary degreasing and cleaning;
- removing minor scratches from the surface;
- coating the article with a solution of ABS containing a pigment to colour the coating ABS the same colour as the hand set to be refinished;
- cooling the surface of the set and at least the underlying layer to a temperature in the range 32.degree. F. to 40.degree. F., and
- subjecting the body to a treatment with the vapor of a solvent for a time sufficient to flow the coated surface but not to warm appreciably the inner layer of the body.
Dependencies are inferred from the claim text.