A method of manufacturing a unitary toothbrush head having a base and filaments extending therefrom. The method includes steps of injecting molten plastic material into a mold cavity having a pre-base cavity and a filament cavity extending therefrom; compressing the molten plastic material, once it is essentially filling the pre-base cavity, by impressing a punching tool into the molten plastic material from the rear side of the pre-base cavity being opposite to a side from which the filament cavity extends; and filling the filament cavity with the molten plastic material under the continuous impression of the punching tool.

A cover device according to an embodiment of the present invention, may include a first plate including a first surface and a second surface facing away from the first surface, and being substantially rectangular, the first plate including a first edge having a first length and extending in a first direction, a second edge having a second length longer than the first length and extending in a second direction orthogonal to the first direction, a third edge parallel to the first edge, having the first length, and extending in the first direction from the second edge, and a fourth edge parallel to the second edge, having the second length, and extending from the first edge in the second direction, a first sidewall perpendicular to the first surface and extending from the first edge, a second sidewall perpendicular to the first surface and the first sidewall and extending from the second edge, a third sidewall perpendicular to the first surface and the second sidewall and extending from the third edge, and a fourth sidewall perpendicular to the first surface and the third sidewall and extending from the fourth edge, wherein the first surface, the first sidewall, the second sidewall, the third sidewall and the fourth sidewall together may form a recess for receiving and holding the electronic device, and the first surface may include at least one parting line having a third length longer than the first length and shorter than the second length and extending in the second direction.

An injection molding apparatus includes: a molding mold including a fixed mold in which a gate into which a molding material flows is formed, and a movable mold in which a cavity portion is formed and which is separated from the fixed mold when the mold is opened; a nozzle in which a flow path that guides the molding material to the gate is formed; and a first cooling plate which is detachably attached to an opposite-side surface of the movable mold from a surface to be in contact with the fixed mold and which is provided with a first cooling mechanism therein, and the first cooling mechanism cools the molding material in the cavity portion.

A mold apparatus includes first and second mold plates that constitute a cassette mold, a first base mold, a base intermediate mold for loading the first mold plate, a second base mold for loading the second mold plate, a base intermediate mold driving device for positioning and fixing the base intermediate mold at any position between the first and second base molds, and a controller for performing control to position and fix the base intermediate mold so that the first mold plate and the first base mold are in contact with each other when a molded product is taken out.

A mold apparatus includes a first mold plate formed with a runner flow path, a second mold plate, a runner stripper plate having a through hole that communicates with the runner flow path, a runner locking part formed with an inverse tapered space which communicates with the through hole and has an inverse tapered shape and in which a locking portion made of a molding material is formed, and a runner unlocking means for moving the runner stripper plate away from the runner locking part to unlock the locking portion.

The cassette mold type injection molding machine controls a first temperature control circuit to supply a heat medium having a heating temperature from a first heating device to a matrix supply path, controls a second temperature control circuit to supply the heat medium having a cooling temperature from a second heating device to the core cavity supply path, and performs cassette mold cool down control in which a bypass control valve is controlled to connect a bypass path and a main body supply path, such that a second heating device or a core cavity supply path is connected to a main body supply path, and thus the heat medium having the heating temperature is supplied to the matrix and the heat medium having the cooling temperature is supplied to a cassette mold main body and a core cavity portion.

The present disclosure relates to machines and methods for reaction injection molding. In particular, the present disclosure provides small format reaction injection molding machines having exchangeable molds and reactant material tanks, as well as molds configured for use therein and associated componentry. In one example, a reaction injection molding machine can include a housing, at least one reactant materials tank engagement station in operational engagement with a first reactant material tank, a molding support framework, an injection molding manifold, and an injection molding nozzle engagement station.

The production of multicomponent parts (4) which include a functional part (3), in particular a hollow needle, onto which a plastic molding (2), in particular a syringe barrel (2), is molded. In order to be able to convert the injection molding device quickly and conveniently, the device has a changing device (11), by which it is possible optionally to move functional part holders (7, 8, 9), matched to different types of functional parts, and/or a functional part holder (8) and a placeholder element (10) into the use position thereof in front of a mold cavity (6) of the injection mold (5) of the injection molding device (1).

A semiconductor package is provided which addresses problems of mold cap heel cracking. The package may made by using a cavity die and a gate insertion tool. The gate insertion tool, which fits into the cavity die, has an elongated body and includes a nozzle head with an edge which is contoured in relation to a mold cap formed on a substrate. The edge defines a curved border, for the mold cap, from a plane above the substrate to a plane lying on the substrate. The nozzle head includes a slot, for admitting a cull runner tip, centered on an axis of the elongated body.

An injection mold includes two mold halves, each of the mold halves including a mold cavity coupled with a plastic material inlet to make a plastic part within the mold cavity, a solid metal material housing the mold cavity, a conformal cooling channel positioned around the solid metal material, a plurality of mesh-containing cavities containing metallic mesh material and positioned around the solid metal material, wherein the metallic mesh material of any of the plurality of mesh-containing cavities is of a constant size.