An air-cooled sprue bush is mounted on a mold and contains: a columnar runner body and a flange portion. The runner body includes a gate and a cooling path defined in the runner body, the cooling path has plural U-shaped channels annularly arranged around the cooling path, and each U-shaped channel has a mesh structure formed therein. The flange portion is fixed on the runner body so as to contact with an outer face of the mold, and the gate passes through the flange portion and has a feeding orifice formed in the flange portion. The flange portion also includes at least one inlet and at least one outlet which are in communication with the cooling path of the runner body and do not contact with the mold, such that external gas flows out of the at least one outlet from the at least one inlet via the cooling path.

A runner system for a multi-cavity injection molding system, the runner system having runners of reduced size.

A mobile phone case injection mold includes a first molding plate and a second molding plate to form a cavity corresponding to a mobile phone case to be manufactured, a first injection device to inject a first molten resin, a second injection device to inject a second molten resin, a first runner to guide the first molten resin, a second runner to guide the second molten resin and a mixing runner to simultaneously guide the first and second molten resins to mix the first and second molten resins, thereby producing a mobile phone case having a pattern formed by mixing the first and second molten resins.

An apparatus for molding process includes a mount including a base, a support on the base, first and second side columns, and a mounting member moveably on tops of the first and second columns; pneumatic first and second half molding assemblies for forming a mold; and first and second auxiliary devices cooperating with a die to insert the mold for molding. There are further provided second cooling devices, first and second lifting devices, first and second lowering devices, and a control device.

A method for manufacturing a resin container includes: performing injection molding on a resin preform; adjusting a temperature of the preform manufactured in the performing injection molding; and performing blow molding on the temperature-adjusted preform to manufacture the resin container. In the performing injection molding, injection molds are opened after completion of filling and pressure holding of a resin material, and the preform is taken out without being cooled in the injection molds after the completion of filling and pressure holding. In addition, in the adjusting the temperature, a refrigerant is introduced into the preform to cool the preform.

A pressure measurement device mountable to an injection unit that injects molding material of an injection molding machine, and an injection molding machine are provided. The pressure measurement device includes: a measurement cylinder mounted to the injection unit and through which the molding material injected by the injection unit flows; a plurality of dies mounted to the measurement cylinder and through which the molding material flows, and having different specifications; a flow path switching pin that selectively switches a discharge destination of the molding material to any one of the plurality of dies; and a pressure sensor that measures a pressure of the molding material in the measurement cylinder.