| 摘要 |
PURPOSE:To produce tableware having two colors at low cost without producing defectives even if the thickness of the tableware is reduced as a whole, by injection molding an inner member, attaching a sheet to the back of the inner member, and injection molding a resin material having a color different from that of the inner member to the outside of the inner member. CONSTITUTION:In a step 1, a resin material such as a polypropylene is molded into an inner member 2 for tableware such as a plate. In a step 3, the sheet 4 of for example aluminium foil to which an adhesive is previously applied is stuck to the approximate intermediate of the back of the inner member 2. Said sheet 4 can withstand the injection pressure and the elevated temperature of the melted resin material 7 when the outer material 7 is injection molded. A step 5 is for the injection molding of a melted resin material such as a polypropylene having a color different from that of the inner member 2 into the outer member 7 with the inner member 2 to which the sheet 4 is stcuk inserted in the cavity 6. The sheet 4 may be attached to the inner member 2 not by an adhesive but by static bonding. |
