| 摘要 |
<p>A method of coating a polycarbonate sheet with an adherent synthetic resin protective layer which comprises extruding a polycarbonate sheet and a synthetic resin protective layer therefor, and bringing the said extruded synthetic resin layer into contact with a surface of the said extruded polycarbonate sheet while both are at an elevated temperature resulting from the extrusion, the elevated temperature, being sufficient, if necessary in combination with the application of pressure, to effect adhesion, upon contact, between the polycarbonate sheet and the said synthetic resin layer. The above synthetic resin layer is advantageously based on a (meth)acrylate homopolymer or copolymer. The synthetic resin layer is preferably provided with a scratch- resistant layer, e.g. based on a silicon resin or a cross-linked hydroxylated, fluorine-containing polymer. The polycarbonate sheet and synthetic resin layer are conveniently extruded from the same multiple die.</p> |
