| abstract |
A process for curing a normally air-inhibited, thermosetting resinous reaction product comprising exposing a film or coat of the resin while overlying a substrate to high-energy radiation to cure at least a depthwise segment of the film that is contiguous to the substrate to provide a nontacky, mar-resistant undersurface to the film, then inverting the film on a substrate, and again exposing the inverted film to high energy radiation or to heat. Electron emission, microwaves, ultraviolet light, and the like may be used as the high-energy radiation. As a modification, the resin film or coat may be stretched prior to completing the second exposure. As a further modification, the resin film may be laminated to a substrate during the second exposure, preferably with an adhesive curable by exposure to such high energy radiation. |