A fire retardant molding contains a thermoplastic compound and an inorganic flameproof agent that is mixed with the thermoplastic compound and which acts by separating from water, having a proportion in the range of 10 wt % to 90 wt %. The fire retardant molding is produced by mixing the thermoplastic material with an inorganic flame-proofing agent, the flame-proofing agent having a proportion in the range of 20 wt % to 80 wt %, and by outputting the compound obtained by mixing, in particular as a flat product. The fire retardant molding is advantageously used, for example, in or on land-based vehicles, water-based vehicles, aircraft and buildings.

Systems and approaches for controlling an injection molding machine having a mold forming a mold cavity include feeding a molten polymer into a barrel containing a screw disposed in a first position, advancing the screw a first instance, from the first position to a second position, to inject the molten polymer into the mold cavity to form a molded part, and ejecting a first molded part or a first set of molded parts from the mold cavity. Further, the screw is advanced a second instance, from the second position to a third position, to inject the molten polymer into the mold cavity to form an additional molded part. A second molded part or a second set of molded parts is ejected from the mold cavity. After the second advancing instance, a recovery profile is commenced in which the screw is returned to the first position.

An injection molding apparatus includes: a first upstream mold formed with a first gate opening into which a first molding material flows; a second upstream mold formed with a second gate opening into which a second molding material flows; a first injection unit configured to inject the first molding material; a second injection unit configured to inject the second molding material; and a downstream mold configured to be clamped to each of the first upstream mold and the second upstream mold. The first injection unit includes a plasticizing mechanism that plasticizes at least a part of a thermoplastic material containing a thermoplastic resin to generate the first molding material. The second injection unit includes a mechanism that mixes a resin and a curing agent to generate the second molding material that is a thermosetting mixture.

An injection molding apparatus includes: a first upstream mold formed with a first gate opening into which a first molding material flows; a second upstream mold formed with a second gate opening into which a second molding material flows; a first injection unit configured to inject the first molding material; a second injection unit configured to inject the second molding material; and a downstream mold configured to be clamped to each of the first upstream mold and the second upstream mold. The first injection unit includes a plasticizing mechanism that plasticizes at least a part of a thermoplastic material containing a thermoplastic resin to generate the first molding material. The second injection unit includes a mechanism that mixes a resin and a curing agent to generate the second molding material that is a thermosetting mixture.

The disclosed concept relates to compositions and methods for the manufacture of electrically resistive, thermally conductive electrical switching apparatus. The composition includes a polymer component and a nanofiber component. The thermal conductivity of the nanofiber component is higher than the thermal conductivity of the polymer component such that the electrical switching apparatus which includes the composition of the disclosed concept has improved heat dissipation as compared to an electrical switching apparatus constructed of the polymer component in the absence of the nanofiber component. Further, the disclosed concept relates to methods of lowering the internal temperature of an electrically resistive, thermally conductive electrical switching apparatus by forming the internals of the apparatus, e.g., circuit breakers, and/or the enclosure from the composition of the disclosed concept.

The disclosed concept relates to compositions and methods for the manufacture of electrically resistive, thermally conductive electrical switching apparatus. The composition includes a polymer component and a nanofiber component. The thermal conductivity of the nanofiber component is higher than the thermal conductivity of the polymer component such that the electrical switching apparatus which includes the composition of the disclosed concept has improved heat dissipation as compared to an electrical switching apparatus constructed of the polymer component in the absence of the nanofiber component. Further, the disclosed concept relates to methods of lowering the internal temperature of an electrically resistive, thermally conductive electrical switching apparatus by forming the internals of the apparatus, e.g., circuit breakers, and/or the enclosure from the composition of the disclosed concept.

Resin supply system in which resin material is stored in a pouch in a degassed state ready for use. The pouch comprises a body portion forming a reservoir for resin material and a connector portion in fluid communication therewith. The connector portion includes an outlet which is configured to be connected to an injector head of an injector assembly, the injector head being connectable to a mould by means of connecting tubing to provide a resin supply thereto. The pouch is configured to be mountable in a housing of the injector assembly and is compressed by hydrostatic pressure of water surrounding the pouch in a chamber of the housing. The application of pressure by a piston moving in a direction transfers pressure to the water and then to the pouch in a controlled manner to provide the resin supply to the mould. After use, the pouch is removed and discarded thereby substantially eliminating the need for cleaning of the housing after use.

A method for performing injection molding using a mold with at least two cavities and an injection cylinder includes supplying resin to be injected into a first cavity, from among the at least two cavities, of the mold to the injection cylinder, injecting the resin into the first cavity, supplying resin to be injected into a second cavity, from among the at least two cavities, of the mold to the injection cylinder, and injecting the resin into the second cavity, wherein the resin injected into the first cavity is cooled, wherein the resin injected into the second cavity is cooled, and wherein molded parts are removed from the first cavity and from the second cavity after the resin in the first cavity has cooled and solidified and the resin the second cavity has cooled and solidified.

An injection apparatus is configured to feed a molten resin into an injection molding section of an injection stretch blow molding machine. The injection apparatus uniformly melts a resin material while the duration from the time of starting plasticizing and kneading till completion of injection is shortened, thereby allowing the operation of the injection apparatus to fall within the time corresponding to the reduced injection molding process in the injection stretch blow molding machine. Thus, the molding cycle for a hollow body is reduced. In this context, at the start of the filling for each injection cycle, the injection apparatus starts plasticizing and kneading for generating the molten resin for injection in the next injection cycle.

Provided are an injection molding machine and an injection molding method. An injection molding machine includes: a plasticizing unit which rotates a screw to plasticize a molding material inside a plastication cylinder, and an injection unit. The injection unit has: a plunger reciprocally moving inside an injection chamber, and an injection driving device reciprocally moving the plunger. By driving the injection driving device to move the plunger backward and forward inside the injection chamber, and driving a rotary driving device to alternately rotate the screw in a normal rotation direction and a reverse rotation direction, the molding material is controlled to reciprocate between the plastication cylinder and the injection chamber.