A method produces an injection molded part. A plastic material is injected into a cavity for forming the injection molded part. The plastic material in a flow line region of the cavity, where the plastic material from two directions coincides during an injection molding process, is at least partially removed from the cavity via at least two overflow points and, in so doing, is locally swirled or mixed between the overflow points.

A manufacturing method of a wire harness which includes at least one bundle of an electric wire group in which a plurality of electric wires are linearly arranged, and a damming part made of a resin material surrounding a part of the electric wire group in an extending direction of the electric wire group and including an outer periphery shape part according to an inner peripheral shape of an electric wire group insertion part, the manufacturing method includes a mold clamping step of disposing a part of the one bundle of the electric wire group and mold clamping an upper mold and a lower mold and an injection step of performing low pressure injection of a larger amount of molten resin than a volume of a cavity into the cavity.

The present invention relates to a method for the production of injection-moulded, reinforced moulded parts, the fibre orientation of which is specifically adjusted on a local basis. Via suitable, dynamically controlled supplementary heating in the wall of the injection mould which is used (variotherm heatable channel), a local cavity region is hereby heated at the time of injection to a temperature in the region of or above the solidification temperature (in any case above the crystallisation temperature in the case of partially crystalline plastic materials or above the glass transition temperature in the case of amorphous plastic materials) of the polymer (plastic material moulding compound).

An injection molded article obtained by injection molding a thermoplastic resin composition comprising 100 parts by mass of a thermoplastic resin and 50 parts by mass or less of at least one of a filler and a colored metallic pigment, wherein at least one weld exists, and a long diameter of 95% by mass or more of the filler existing within a cross-sectional depth of 50 μm or less from a surface of the weld is parallel to the surface of the weld.

A method for an injection molded product having a molten resin containing an aluminum pigment. The injection mold includes resin reservoirs connected to both sides of a cavity, positioned where the molten resin meets as it partly flows therein. The cavity has a design surface of an injection-molded product and both side surfaces continuing from the surface forming the design surface. One of the resin reservoirs is connected to one of the side surfaces and the other resin reservoir is connected to the other side surface, across the position where the molten resin meets. When the molten resin partly flows into the resin reservoirs, flow of the molten resin, which is substantially in parallel from the surface forming the design surface to the resin reservoirs, is generated and aluminum pigment makes an orientation angle of 120° to 140° on the design surface at the position where the molten resin meets.

The present invention relates to a method for the production of injection-moulded, reinforced moulded parts, the fibre orientation of which is specifically adjusted on a local basis. Via suitable, dynamically controlled supplementary heating in the wall of the injection mould which is used (variotherm heatable channel), a local cavity region is hereby heated at the time of injection to a temperature in the region of or above the solidification temperature (in any case above the crystallisation temperature in the case of partially crystalline plastic materials or above the glass transition temperature in the case of amorphous plastic materials) of the polymer (plastic material moulding compound).

A resin reservoir capable of storing the melted resin is provided in the pillar radially facing the pillar provided with the resin injection gate having a cross-sectional area larger than those of the other resin injection gates among a plurality of the pillars not provided with the resin injection gate or the pillar in the vicinity of the pillar facing the pillar provided with the resin injection gate having a cross-sectional area larger than those of the other resin injection gates among the plurality of the pillars not provided with the resin injection gate. A cross-sectional area of a communicating portion of the resin reservoir which communicates with the pillar is smaller than the smallest of cross-sectional areas of a plurality of the resin injection gates.

A core mold component defining a lower surface of the injection mold set corresponding to the lower surface of the annular component is heated to a base temperature. A cavity mold component defining the upper surface of the injection mold set corresponding to the Class A surface of the annular component is heated to a higher temperature than the base temperature. Faces of two streams of metallic resin, including the metallic resin flakes, injected into the mold set are caused to come together at the knit line. Metallic resin flakes are caused to flow into inboard and outboard overflow cavity through respective inboard and outboard gates positioned adjacent the knit line.

A resin reservoir capable of storing the melted resin is provided in the pillar radially facing the pillar provided with the resin injection gate having a cross-sectional area larger than those of the other resin injection gates among a plurality of the pillars not provided with the resin injection gate or the pillar in the vicinity of the pillar facing the pillar provided with the resin injection gate having a cross-sectional area larger than those of the other resin injection gates among the plurality of the pillars not provided with the resin injection gate. A cross-sectional area of a communicating portion of the resin reservoir which communicates with the pillar is smaller than the smallest of cross-sectional areas of a plurality of the resin injection gates.

A method produces an injection molded part. A plastic material is injected into a cavity for forming the injection molded part. The plastic material in a flow line region of the cavity, where the plastic material from two directions coincides during an injection molding process, is at least partially removed from the cavity via at least two overflow points and, in so doing, is locally swirled or mixed between the overflow points.