| 摘要 |
PURPOSE: To provide a composite panel superior in the chemical properties and extrusion molding property by coating a substrate of acrylonitrile-butadiene- styrene(ABS) with polymethyl methacrylate(PMMA, acryl glass). CONSTITUTION: A coating of poly (methyl methacrylate) (PMMA, acrylic glass) is placed on a substrate of acrylonitrile-butadiene-styrene(ABS) in particular, and the acryl glass coating is provided with a top coating consisting of 30-70 wt.% of polyvinylidene fluoride(PVDF), and the remainder of poly (methyl methacrylate). The thickness of the top coating is less than 0.5 mm, the materials for forming three layers, that is, the substrate, the coating and the top coating, are directly supplied to the flat sheet dies through the separating paths, and when the width is same as that of the final product, the new composite panel can be manufactured by the extrusion molding method regardless of the top coating is remarkably thin. |
