| 摘要 |
PURPOSE:To obtain a filling effect same as in the open injection for a mold for existing side injection by introducing resin liquid to a central section of a molded product by a runner insert die and foam filling all over the area in the mold from said position. CONSTITUTION:A runner insert die 7 is used for introducing resin liquid injected from a resin injection section 6 to a desired site in a mold 3, and resin liquid from an injection line 6 is branched into the left and right and flows dividedly into two auxiliary flow paths 7a, 7a. Outlets of two auxiliary flow paths are used respectively as filling dispersion sections 9, 9, and communicated with almost a central section in the width direction at both ends of a molded product in the length direction. A material having the reaction starting time in which foaming reaction is not started quickly during flowing the injection path 8 and the auxiliary flow paths 7a is selected, and no solidification is in progress during said period. Resin liquid is foamed and filled from respective filling dispersion sections 9 simultaneously toward the inside of the molded product. The resin liquid is foam filled almost from the central section of the molded product by said arrangement to generate no defective molding because of the shortage of filling. |
