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Part of a Recipe for Vinyl Application Success

Polycarbonates (PC) absorb, and then outgas, moisture. Manufacturers often recommend drying PC in an air-recirculating batch oven for at least one hour prior to thermoforming or graphic application. This procedure helps remove the sheet's internal moisture. Vinyl applied over insufficiently dried PC will trap outgassed moisture, which causes bubbles. After drying, prep the surface with water and a mild, nonabrasive cleaner. Because the PC is softer than most plastics, it's susceptible to scratching, so clean it carefully. Don't use any solvents - although PC is strong, it's susceptible to subsequent stress-induced cracking. Avoid using brushes, squeegees or other cleaning devices that could scratch the sheet's surface. After washing the surface, rinse with clean water and dry with a soft cloth to prevent water spotting.

Having prepared the surface, install graphics using commercial application fluid. Washing the surface and using application fluid after drying the sheet may not make sense, but don't worry. Neither washing nor wet application will compromise the PC sheet.