Provided is an injection molding machine (1) including a plasticizing unit (2), an injection unit (3), a communication path (5a) configured to communicate therebetween and having an opening (5b) on the plasticizing unit side which is located on an axis of the screw (21), and a backflow prevention mechanism part (6) configured to close and open the opening on the plasticizing unit side by advancing and retreating the screw (21) in the axial direction, wherein the backflow prevention mechanism part (6) includes a tapered wedge portion (61) having an inclined surface (61a), a driving portion (63) which moves the wedge portion in the forward and backward directions, and a pressing member which is pressed against the inclined surface (61a) by forward movement of the wedge portion and moves the screw toward the opening on the plasticizing unit side.

Provided is an injection molding machine (1) including a plasticizing unit (2), an injection unit (3), a communication path (5a) configured to communicate therebetween and having an opening (5b) on the plasticizing unit side which is located on an axis of the screw (21), and a backflow prevention mechanism part (6) configured to close and open the opening on the plasticizing unit side by advancing and retreating the screw (21) in the axial direction, wherein the backflow prevention mechanism part (6) includes a tapered wedge portion (61) having an inclined surface (61a), a driving portion (63) which moves the wedge portion in the forward and backward directions, and a pressing member which is pressed against the inclined surface (61a) by forward movement of the wedge portion and moves the screw toward the opening on the plasticizing unit side.

An injection molding apparatus that employs a stationary plasticating screw relative to feed port, non-reciprocal helical plasticating screw housed within an inner barrel that is coupled to a plunger head assembly, drive housing, motor and injection cylinders that is housed within an outer barrel/pressure vessel that conveys, melts, homogenizes and pumps polymeric plastic material precisely and efficiently along One axis. The helical plasticating screw is fixed in relative position within the inner barrel so that the material feed opening of the inner barrel and helical plasticating screw are aligned to accept pellets, powder or liquid of polymetric substance. The inner barrel is fixed to a plunger head assembly on the distal end that is housed within a pressure vessel with close proximity between the outside diameter of the plunger head and the inside diameter of said pressure vessel that upon screw rotation transfers polymetric material through the center passageway of said plunger head opening a normally closed one-way shut-off mechanism into said pressure vessel precisely for future displacement of polymeric mass into a mold or other. The apparatus and process of feeding, melting and injecting Polymeric material all occurs on one axis.

An injecting machine for two different liquid material includes an injection cylinder having a nozzle disposed on a distal end thereof. A plunger is reciprocally received in the injection cylinder for undergoing reciprocating movement between an advanced position and a retracted position, with the plunger injecting a liquid mixture of the two different liquid materials as the plunger moves to the advanced position. A moving mechanism causes the plunger to reciprocate between the advanced position and the retracted position. A mixing mechanism is disposed on the injection cylinder for mixing the two different liquid materials together to feed the liquid mixture into the injection cylinder. A support plate supports a proximal portion of the injection cylinder. The mixing mechanism is supported in its entirety by the injection cylinder.

An injecting machine for two different liquid material includes an injection cylinder having a nozzle disposed on a distal end thereof. A plunger is reciprocally received in the injection cylinder for undergoing reciprocating movement between an advanced position and a retracted position, with the plunger injecting a liquid mixture of the two different liquid materials as the plunger moves to the advanced position. A moving mechanism causes the plunger to reciprocate between the advanced position and the retracted position. A mixing mechanism is disposed on the injection cylinder for mixing the two different liquid materials together to feed the liquid mixture into the injection cylinder. A support plate supports a proximal portion of the injection cylinder. The mixing mechanism is supported in its entirety by the injection cylinder.

An injection unit for a moulding machine includes an injection cylinder, and an injection piston is provided in the injection cylinder. During an injection process, the injection piston is configured to push out a plasticized massin particular plasticized plasticfrom the injection cylinder and to feed it to a moulding tool via an injection nozzle. At least two plasticizing units and two supply channels are provided, and the at least two plasticizing units can be fluidically connected with the injection nozzle by the supply channels. The at least two plasticizing units are configured to supply the injection cylinder with the plasticized mass via the supply channels and the injection nozzle prior to the injection process.

An injection unit for a moulding machine includes an injection cylinder, and an injection piston is provided in the injection cylinder. During an injection process, the injection piston is configured to push out a plasticized massin particular plasticized plasticfrom the injection cylinder and to feed it to a moulding tool via an injection nozzle. At least two plasticizing units and two supply channels are provided, and the at least two plasticizing units can be fluidically connected with the injection nozzle by the supply channels. The at least two plasticizing units are configured to supply the injection cylinder with the plasticized mass via the supply channels and the injection nozzle prior to the injection process.

A thermosetting composition comprising: (A) a (meth)acrylate compound having a viscosity at 25 C. of 1 to 300 mPa.Math.s with which a substituted or unsubstituted aliphatic hydrocarbon group including 6 or more carbon atoms is ester-bonded; (B) spherical silica; and (C) a white pigment, and having a shear viscosity at 25 C. and 10 s.sup.1 of 1 Pa.Math.s or more and 500 Pa.Math.s or less and a shear velocity at 25 C. and 100 s.sup.1 of 0.3 Pa.Math.s or more and 100 Pas or less:

1. A plasticizing device includes a barrel including a resin material supply port portion and a fiber supply port portion which is formed on a distal side from the resin material supply port portion; and a screw that comprises a shaft body and a flight, and is received in the barrel. The barrel is disposed with a posture in which its axial line intersects a gravitational direction. A maximum length of an opening in the barrel of the fiber supply port portion along an axial direction of the barrel is 1 time or more and 2 times or less as much as a pitch of the flight disposed in a portion of the screw which faces the opening in the barrel of the fiber supply port portion in a direction perpendicular to the axial line of the barrel.

1. A plasticizing device includes a barrel including a resin material supply port portion and a fiber supply port portion which is formed on a distal side from the resin material supply port portion; and a screw that comprises a shaft body and a flight, and is received in the barrel. The barrel is disposed with a posture in which its axial line intersects a gravitational direction. A maximum length of an opening in the barrel of the fiber supply port portion along an axial direction of the barrel is 1 time or more and 2 times or less as much as a pitch of the flight disposed in a portion of the screw which faces the opening in the barrel of the fiber supply port portion in a direction perpendicular to the axial line of the barrel.