A syringe includes a barrel having a proximal end, a distal end, and a sidewall extending substantially circumferentially between the proximal end and the distal end along a longitudinal axis. The barrel is formed from an injection molding process including aligning a mold die defining an internal shape of the barrel in a molding cavity defining an external shape of the barrel, the molding cavity defined by first and second mold sections. Each mold section includes at least one gate adapted to control the flow of a molding material into the molding cavity. The gates of each mold section are opened to permit the first and second melt streams of molding material to fill the molding cavity surrounding the mold die, where the molding material takes the shape of the molding cavity.

A method for the production of an injection-molded part including casting an injection-molding material at least two injection-molding stations by at least two injection-molding processes. A pre-molded part, produced in one of the at least two injection-molding processes, is cooled in a cooling station between the at least two injection-molding processes.

A mold includes a rotatable portion, a frame portion, a first and second portion, and a production unit. The rotatable portion has a plurality of surfaces and a plurality of forming portions. The plurality of surfaces is each provided with one of the plurality of forming portions, each having the same shape. The frame portion rotatably supports the rotatable portion. The first portion defines a cavity by coming into contact with one surface of the plurality of surfaces by clamping the mold. The second portion comes into contact with another surface of the plurality of surfaces different from the one surface by clamping the mold. The production unit attached to the frame portion.

The present application provides a functional key assembly with symbol showing function and its manufacturing method. Specifically, in this application, the symbol of the functional key is provided on the inner surface of the function showing component or outer protective plate, to eliminate the provision of the parting line. Being manufactured by over-injection molding, the protective plate is provided with a carved structure at its inner portion and a back component at its lower portion such that the image of the symbol of the function key is cast onto the surface of the protective plate through the carved structure in backlit environment and is invisible without back lit, immerging effect is thus achieved, as a result of which, the armrest plate is therefore artistically decorated and less costly to manufacture at the same time.

The present invention achieves cost reduction by simplifying the manufacturing process for a film-formed molded product provided with a metal coating film capable of transmitting electromagnetic waves therethrough. This method for manufacturing a film-formed molded product which includes a molded product and a metal coating film covering the molded product comprises: forming the molded product between a movable mold and a fixed mold; and then forming the metal coating film which covers the molded product by a film-forming part of a second mold without taking the molded product out from between the movable mold and the fixed mold. The metal coating film is capable of transmitting electromagnetic waves therethrough as a result of generation of cracks after being formed.

A molded metallized polymeric structure includes a metal plate-able polymer component having a metallized surface wherein the component includes one or more locking members. The molded metallized polymeric structure additionally includes a polymer resin coupled to one or more binding regions of the metallized surface wherein the polymer resin is positioned to be in contact with the one or more locking members. The molded metallized polymeric structure has one or more visually exposed portions of the metallized surface.

A method for continuously manufacturing molded products by repeating a plurality of molding cycles includes, in each molding cycle, filling a resin composition into a mold, pressing the resin composition in the mold, cooling the resin composition in the mold using cooling water, and releasing the resin composition from an interior of the mold to obtain a molded product. An A-th molding cycle of the plurality of molding cycles can be a delay cycle delayed from a B-th molding cycle. When the A-th cycle is the delay cycle, the flow rate of the cooling water flowing in the mold at the cooling step is decreased in the A-th cycle as compared with the B-th cycle.

A system for forming injection molded articles includes a turret, a first mold unit, and a second mold unit. In an embodiment, the turret includes a plurality of core plates and each core plate includes a plurality of core pins. The first mold unit may be configured to form an inner injection molded layer, and the second mold unit may be configured to form an outer injection molded layer over the inner injection molded layer. In an embodiment, the first mold unit and the second mold unit are configured to mold at the same time, and to provide opposing clamping forces. Processes involving over-molded articles are also disclosed.

The toothbrush has a handle, a neck and a head. In the handle there is a first hard component which has a metallic covering. At least in regions, the metallic covering has a covering of a second hard component.

The invention relates to an injection molding device (1) for producing plastic parts (2) consisting of one or more material components. The injection molding device (1) comprises an injection mold (3) having a center part (5) that is rotatable about a first axis of rotation (4), which center part is arranged between a first and a second mold half and which can be moved relative to said mold halves in a first direction. The center part (5) has cavities (7) on the lateral surfaces (6). A retaining device (10) is used to retain the center part (5) in the injection molding device (1). A transfer device (16) is arranged laterally next to the center part (5) at least in an open position and is used to transfer plastic parts (2) into a storage means (2).