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US 4,173,672 AGranted
Decorated safety glass
OwnerJose R. Mannheiminventor
Life of this patent
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Abstract
A method to decorated laminate glass comprised of two glass sheets joined by a decorated film of a thermoplastic polymer. A sheet of glass, the film and a lamina of cellulosic material, decorated on the surface that contacts the film, are subjected to pressure and heat so as to transfer, by sublimation, said decoration to the film at the moment that it adheres itself to the surface of the glass. A second sheet of glass is over-placed on the decorated film and pressed to it, with heat, so as to form a safety glass decorated and/or colored in the interior.
Claims14
A method of manufacturing decorated colored glass comprising the following steps:
- (a) transferring, with heat and pressure, a color impression from a printed cellulosic support into an adhesive plastic polyvinyl butyral film spread on a lamina of glass for a time period sufficient for the film to become semi-fluid and for the colorants to permeate the entire thickness thereof;
- (b) removing the cellulosic support when the color impression has been transferred from the cellulosic layer into the polyvinyl butyral film and when said film has been permanently adhered to said lamina of glass;
- (c) placing a second lamina over the decorated polyvinyl butyral film, in direct contact with it;
- and
- (d) laminating these two lamina and said interposed decorated film at a pressure ranging from 25 psi to 850 psi and at a temperature ranging from 70.degree. C. to 350.degree. C.
2 more elements
Dependencies are inferred from the claim text.