An injection molding machine capable of changing the position of the supply hole of the resin material in a cylinder as appropriate is provided. An injection molding machine according to one aspect of the present disclosure includes: a supply hole through which a resin material is supplied to an inside of a cylinder, the supply hole being formed in a side wall part of the cylinder; and a closing part that, when a torpedo piston moves to a side of an other end part of the cylinder in order to plasticize the resin material, moves together with the torpedo piston and closes the supply hole.

An injection molding machine capable of changing the position of the supply hole of the resin material in a cylinder as appropriate is provided. An injection molding machine according to one aspect of the present disclosure includes: a supply hole through which a resin material is supplied to an inside of a cylinder, the supply hole being formed in a side wall part of the cylinder; and a closing part that, when a torpedo piston moves to a side of an other end part of the cylinder in order to plasticize the resin material, moves together with the torpedo piston and closes the supply hole.

Apparatus for degassing a plasticizable material, wherein the apparatus has at least one passage having a inlet opening for the feed of the material in the plasticized state, provided downstream of the at least one passage in the flow direction of the plasticized material is a plurality of substantially parallel arranged parallelly passages so that a material flow flowing through the passage is split up into partial flows by the partial passages, and the partial passages open into a free space so that the material expands in the free space, wherein at least one of the partial passages has a taper.

Apparatus for degassing a plasticizable material, wherein the apparatus has at least one passage having a inlet opening for the feed of the material in the plasticized state, provided downstream of the at least one passage in the flow direction of the plasticized material is a plurality of substantially parallel arranged parallelly passages so that a material flow flowing through the passage is split up into partial flows by the partial passages, and the partial passages open into a free space so that the material expands in the free space, wherein at least one of the partial passages has a taper.

An apparatus for molding a part includes a plunger cavity, a plunger, and a mold cavity, wherein the plunger is oriented out-of-plane with respect to a major surface of the mold cavity, and first and second vents couples to respective first and second portions of the mold cavity. In a method, resin and fiber are forced into the mold cavity from a plunger cavity, and at least some of the fibers and resin are preferentially flowed to certain region in the mold cavity via the use of vents.

A method for producing a foam-molded product by using a plasticizing cylinder, includes: plasticizing and melting the thermoplastic resin to provide the molten resin in a plasticization zone of the plasticizing cylinder; introducing a pressurized fluid containing the physical foaming agent at a fixed pressure into a starvation zone of the plasticizing cylinder to retain the starvation zone at the fixed pressure; allowing the molten resin to be in the starved state in the starvation zone; bringing the molten resin in contact with the pressurized fluid containing the physical foaming agent at the fixed pressure, in the starvation zone in a state in which the starvation zone is retained at the fixed pressure; and molding the molten resin having been brought in contact with the pressurized fluid containing the physical foaming agent into the foam-molded product.

A method for producing a foam-molded product by using a plasticizing cylinder, includes: plasticizing and melting the thermoplastic resin to provide the molten resin in a plasticization zone of the plasticizing cylinder; introducing a pressurized fluid containing the physical foaming agent at a fixed pressure into a starvation zone of the plasticizing cylinder to retain the starvation zone at the fixed pressure; allowing the molten resin to be in the starved state in the starvation zone; bringing the molten resin in contact with the pressurized fluid containing the physical foaming agent at the fixed pressure, in the starvation zone in a state in which the starvation zone is retained at the fixed pressure; and molding the molten resin having been brought in contact with the pressurized fluid containing the physical foaming agent into the foam-molded product.

A method for producing a foam-molded product by using a plasticizing cylinder, includes: plasticizing and melting the thermoplastic resin to provide the molten resin in a plasticization zone of the plasticizing cylinder; introducing a pressurized fluid containing the physical foaming agent at a fixed pressure into a starvation zone of the plasticizing cylinder to retain the starvation zone at the fixed pressure; allowing the molten resin to be in the starved state in the starvation zone; bringing the molten resin in contact with the pressurized fluid containing the physical foaming agent at the fixed pressure, in the starvation zone in a state in which the starvation zone is retained at the fixed pressure; and molding the molten resin having been brought in contact with the pressurized fluid containing the physical foaming agent into the foam-molded product.

Molding methods and molds for making a synthetic resin molded product include disposing a curable liquid resin mixture in a recess of a female mold. The curable liquid resin mixture is then simultaneously agitated and degassed by a mixer while under a partial vacuum. More specifically, at least the female mold is orbited around an orbital axis while being rotated about a rotational axis that is eccentric to the orbital axis. After being thoroughly mixed and degassed, the liquid mixture is then cured in the mold unit.

A resin injection nozzle is provided with a first mating surface on an inner-diameter side and a second mating surface on an outer-diameter side relative to the first mating surface, and a through-hole is provided extending from a void defined between the first and second mating surfaces toward the distal end of the resin injection nozzle. Thus, gas generated from a molten resin can be effectively discharged.