A method of the invention which manufactures a molded product by injection molding using injection molding die including a pair of dies includes: injecting and filling the resin in a molten state in a state where a temperature of the injection molding die is higher than a deformation temperature of resin to be injected and filled; reducing a volume of a cavity due to volume contraction of the resin when cooling thereof; and carrying out molding while maintaining a state where the resin is brought into close contact with both cavity surfaces of the pair of the dies.

An injection molding machine includes a belt transmission mechanism (mold opening/closing mechanism, ejector mechanism, screw drive mechanism, injection mechanism) configured to transmit drive force from a driving shaft (driving pulley) to a driven shaft (driven pulley) by means of a belt. The injection molding machine includes: a cover covering part or entirety of the belt; and a sensor attached to the cover and configured to detect an abnormality of the belt.

A mold clamp control method for an injection molding machine having a toggle-type mold clamping mechanism. The mold clamp control method includes: a low-pressure mold clamping step that performs position hold control by which a crosshead is held in a set holding position in a state where a toggle link has been bent, when injection-filling is started; and a compression-press step that performs speed and position control by which the crosshead is advanced toward a set advancement position from the set holding position in a state where a first output upper limit value has been provided to a driving section. Advancement of the crosshead is continued in at least part of the compression-press step in a state where a generated output of the driving section is maintained at the first output upper limit value.

A mold clamp control method for an injection molding machine having a toggle-type mold clamping mechanism. The mold clamp control method includes: a low-pressure mold clamping step that performs position hold control by which a crosshead is held in a set holding position in a state where a toggle link has been bent, when injection-filling is started; and a compression-press step that performs speed and position control by which the crosshead is advanced toward a set advancement position from the set holding position in a state where a first output upper limit value has been provided to a driving section. Advancement of the crosshead is continued in at least part of the compression-press step in a state where a generated output of the driving section is maintained at the first output upper limit value.

This injection molding method uses an injection molding machine for two-material molding, which comprises a first mold part that is provided with a cavity and a second mold part that is provided with a cavity and is arranged in tandem with the first mold part. This injection molding method comprises: a first molding step wherein a material is injected into the cavity of the first mold part and the material in the cavity is compressed; and a second molding step wherein a material is injected into the cavity of the second mold part. A pressure, which is generated in the second mold part by injecting the material into the cavity in the second molding step, acts on the first mold part, and a compressive force is applied to the material in the cavity in the first molding step.

This injection molding method uses an injection molding machine for two-material molding, which comprises a first mold part that is provided with a cavity and a second mold part that is provided with a cavity and is arranged in tandem with the first mold part. This injection molding method comprises: a first molding step wherein a material is injected into the cavity of the first mold part and the material in the cavity is compressed; and a second molding step wherein a material is injected into the cavity of the second mold part. A pressure, which is generated in the second mold part by injecting the material into the cavity in the second molding step, acts on the first mold part, and a compressive force is applied to the material in the cavity in the first molding step.

An injection molding machine includes a belt transmission mechanism (mold opening/closing mechanism, ejector mechanism, screw drive mechanism, injection mechanism) configured to transmit drive force from a driving shaft (driving pulley) to a driven shaft (driven pulley) by means of a belt. The injection molding machine includes: a cover covering part or entirety of the belt; and a sensor attached to the cover and configured to detect an abnormality of the belt.

A molding machine configured to achieve space saving and simplification of the hydraulic circuit. Provided is a molding machine configured to form a molded body by closing, in a state where a parison is disposed by injecting molten resin between first and second molds capable of being opened and closed, the first and second molds and maintaining pressure applied to the first and second molds. A hydraulic circuit to conduct oil for generating hydraulic pressure; the flow adjustment valve, a pressure adjustment valve, and a path control valve included in the hydraulic circuit; and a multi-functional valve unit.

The present invention provides a method for producing a container for foods which can suppress occurrences of wrinkles and blisters, and can produce a container for foods having depth and being excellent in heat insulating properties, with the use of a supercritical injection molding method. The method for producing the container for foods according to the present invention is a method for producing the container having depth, by injection molding a molten resin that contains a supercritical fluid and a resin composition, into a cavity in a metal mold, wherein the cavity includes a first region that forms an underside portion of the container for foods having depth, a second region that forms a curved side portion, and a third region that forms a lateral side portion, from a resin injection port toward a flow end, and wherein the mold surfaces that face the cavity of the second region and the third region have an arithmetic mean roughness of 0.5 m or larger and 10 m or smaller, and a ten-point mean roughness of 2 m or larger and 60 m or smaller.

A multilayer film having a structure consisting of at least three layers: a polypropylene resin layer (X), an intermediate layer (Y) formed of a thermoplastic polymer composition containing 100 parts by mass of a thermoplastic elastomer (A), which is a block copolymer containing a polymer block (a1) formed of an aromatic vinyl compound unit and a polymer block (a2) formed of a conjugate diene compound unit or a hydrogenated product thereof, and 1 to 50 parts by mass a polypropylene resin (B) and a decorative layer (Z), in which the layers (X) (Y) and (Z) are stacked in this order, is excellent in preform moldability, successfully and firmly adhering to an adherend to decorate, small in warpage during thermal lamination and satisfactory in coextrusion film formability and weather resistance.