| 摘要 |
PURPOSE:To considerably and uniformly improve the film adhesiveness of polyolefin products by treating the surface of said products with an org. solvent having the same or approximate SP value as or to that of polyolefin prior to painting then subjecting the same to plasma treatment in the presence of an inert gas. CONSTITUTION:The surface of a product to be painted obtained by injection molding or the like of polyolefin such as PE homopolymer is treated with an org. solvent having the same or approximate SP value as or to that of polyolefin. It is desirable to accomplish this surface treatment with the vapor of the org. solvent. The solvent used is of chlorine or aromatic type, for example, trichloroethylene, benzene or the like. Next, the polyolefin product having undergone the surface treatment is subjected to plasma treatment in the presence of an inert gas such as O2. The treatment conditions of this time are 0.2-3.0KW microwaves, 2,450+ or -50MHz oscillation frequencies, 0.5-1.0 Torr degrees of vacuum and 10-30 seconds time. |
