Abstract: A molded product consisting of a skin layer and a core layer is obtained by injecting a skin layer resin and a core layer resin from a skin injection unit 13 and a core injection unit 12 into metal molds 8, 9, respectively. The skin layer resin injection pressure by the skin injection unit 13 and the core layer resin injection pressure by the core injection unit 12 are controlled in such a manner that a volumetrically reduced quantity at the time of cooling and solidifying the skin layer resin is compensated so as not to generate defects such as hollows and the like in the molded product. It is characterized in that the state the core dwelling pressure is higher than the skin dwelling pressure over a predetermined length of time.

Abstract: In an injection compression-molding apparatus, a molded article is produced by setting molds 10 and 11 to an intermediate clamped state, and then by setting the molds 10 and 11 to a final clamped state by re-clamping the molds 10 and 11 to each other after injecting melted resin into a cavity defined by the molds 10 and 11. The apparatus includes a clamping mechanism and a parallelism retaining mechanism 20. The clamping mechanism has a mold-driving cylinder 7 for moving the movable mold 10 toward and away from the fixed mold 11, a guide engaging member 8, support panels 4, 5, etc. so as to selectively set the molds 10 and 11 to the intermediate clamped state and the final clamped state. The parallelism retaining mechanism 20 retains parallelism between the molds 10 and 11 in the intermediate clamped state by giving a corrective force to mold attaching surfaces of the clamping mechanism where the respective molds 10 and 11 are mounted.

Abstract: The injection molding method according to the present invention selectively carries out a single layer molding operation in which injection units for measuring resins while plasticizing the former to inject them to a cavity part are connected together, and only desired resins in one of the injection units are injected into the cavity part to thereby mold a single layer molded product; and a multi-layer molding operation in which mixed resins formed when resins are changed in one of the injection units are injected into the cavity part so as to constitute a core layer, and desired resins in the other of the injection units are injected into the cavity part so as to constitute a skin layer thereby molding a molded product of a multilayer construction.

Abstract: A multilayer injection molding machine manufactures a molded product formed of a plurality of layers of resins or colors by press fitting resins from a core layer injection unit and a skin layer injection unit to a cavity party formed by pressing and clamping a moving metal mold to a fixed metal mold fixed to a support member. The multilayer injection molding machine is formed by integrating a connecting device body interposed between the fixed metal mold and the support member so as to support the fixed metal mold to the support member and an injection unit connecting device provided on the connecting device body and having a plurality of resin passages allowing the cavity part to communicate with each injection unit.

Abstract: A molded product consisting of a skin layer and a core layer is obtained by injecting a skin layer resin and a core layer resin from a skin injection unit 13 and a core injection unit 12 into metal molds 8, 9, respectively. The skin layer resin injection pressure by the skin injection unit 13 and the core layer resin injection pressure by the core injection unit 12 are controlled in such a manner that a volumetrically reduced quantity at the time of cooling and solidifying the skin layer resin is compensated so as not to generate defects such as hollows and the like in the molded product. It is characterized in that the state the core dwelling pressure is higher than the skin dwelling pressure over a predetermined length of time.

Abstract: The thermocompression-bonding head (10) of the thermocompression-bonding apparatus (1) according to the present invention has a ceramic layer (15) having a predetermined thickness on the contact part (130a) of the pressing member (130) of the head body (13). The difference between the thermal expansion coefficient of the head body (13) and the thermal expansion coefficient of the ceramic layer (15) is within the range of ±30% at a temperature of 400° C. or less.

Abstract: A mounting head apparatus for adsorbing and moving a sheet member to a position above an object on which the sheet member is to be mounted and mounting the adsorbed sheet member on the object includes an adsorbing portion having a plurality of adsorbing openings formed at the leading end thereof; a connection chamber to which the adsorbing portion is joined and which is formed into a space for connecting the base portions of the plural adsorbing openings to one another; a dividing unit disposed in the connection chamber and arranged to divide the internal space of the connection chamber into a plurality of sections; and a pressure reducing unit connected to the connection chamber and arranged to reduce the pressure in the connection chamber, wherein adsorbing force is generated from a portion of the plural adsorbing openings in a predetermined region when the dividing unit divides the inside portion of the connection chamber at a predetermined position and the pressure in at least one of the divided connectio

Abstract: A multilayer injection molding machine manufactures a molded product formed of a plurality of layers of resins or colors by press fitting resins from a core layer injection unit and a skin layer injection unit to a cavity part formed by pressing and clamping a moving metal mold to a fixed metal mold fixed to a support member. The multilayer injection molding machine is formed by integrating a connecting device body interposed between the fixed metal mold and the support member so as to support the fixed metal mold to the support member and an injection unit connecting device provided on the connecting device body and having a plurality of resin passages allowing the cavity part to communicate with each injection unit.

Abstract: An injection molding process for forming high strength, long fiber-reinforced thermoplastic resin, and for holding damage to the pellet-shaped thermoplastic resin to a minimum even when being plasticized, and maintaining the fiber length of pellet-shaped fiber bundles while unwinding the fibers and melting the resin. After the long fiber-reinforced thermoplastic resin has been heated and melted, pressure is applied to unwind the long fiber-reinforced thermoplastic resin while melted, and injection molding then performed.

Abstract: A two-layer foam injection molding machine for molding foam moldings in which a surface member composed of a foam layer and a skin layer on the surface of the foam layer is laminated in a body on a core member made from a hard resin.

Abstract: A method of deciding the quality of a SMC workpiece (34) in compression-molding the SMC workpiece (34) on a compression-molding press which compression-molds the SMC workpiece (34) in a cavity (13) formed between a pair of molds (11, 12) by moving at least one of the pair of molds by hydraulic cylinder actuators (4, 7) includes detecting the hydraulic pressure P.sub.O of the working fluid supplied to the hydraulic cylinder actuators (4, 7) upon the arrival of the moving mold (11) at a predetermined position; comparing the detected hydraulic pressure P.sub.O with a predetermined optimum hydraulic pressure P.sub.N to determine the deviation .DELTA.P.sub.O =P.sub.N -P.sub.O ; deciding the quality of the SMC workpiece (34) on the basis of the deviation .DELTA.P.sub.