| 摘要 |
PURPOSE:To provide the title molding product which exhibits excellent adhesive strength even in an atmosphere wherein temp. difference is large, and which comprises a polyurethane body and a metal insert unified together through a layer of an adhesive having an isocyanate compd. added thereto. CONSTITUTION:A rubber adhesive 2 is obtd. by blending 100pts.wt. chloroprene rubber adhesive with 0.01-50pts.wt. isocyanate compd. (e.g., hexamethylene diisocyanate), together with a resin, a filler, a plasticizer, an antioxidant, etc. Subsequently, a upper mold 5 is joined with a lower mold 3 in which a metal insert coated with the adhesive 2 has been set, and the molds are closed. Thereafter, a polyol component and a polyisocyanate component mixed together with a mixing head so as to have an NCO index of 100-120 are injected into a cavity 7 at a delivery rate of 100-300g/sec, delivery pressure of 50-200kgf/ cm<2> and a temp. of 20-40 deg.C, thereby performing reaction injection molding. Thus, a polyurethane body 9 is unified with the insert 1 through the adhesive layer 2. |
