1210 results about "Plastic molding" patented technology

Disclosed is a cartridge case for various caliber ammunition that can consist essentially of a powdered metal and/or powdered metal alloy(s) that is formed into the cartridge case through an injection mold processing. Also disclosed is a method for forming a cartridge case, which may include use of Metal Injection Molding (“MIM”) processes to produce the cartridge case which retains a primer, propellant, and/or a bullet. Also disclosed are embodiments related to a case telescoped cartridge that may include a cap and a body. The body can consist essentially of or consists entirely of a powdered metal and/or powdered metal alloy(s) that has been formed through MIM. The cap can comprise plastic that has been formed through plastic molding or comprise powdered metal and/or powdered metal alloy(s) that has been formed through MIM.

Disclosed is an injection molding method for manufacturing plastic parts from thermoplastically processible plastic molding materials with at least one exposed part (1) and at least one functional part (10), whereby the plastic molding material for the exposed part (1) comprises a transparent or translucent matrix with added effect pigments, and whereby the functional parts (10) can exhibit different physical and/or chemical plastic properties to the exposed parts (1). The injection molding method comprises the following steps: a) injection molding and solidification of the plastic molding material of the at least one exposed part (1) with an exposed surface (2) and a core surface (3) facing away from the latter in a first mold (20) with a first cavity (21); b) opening of the first mold (20) along a parting line or plane (24); c) closing of a second mold (25) with the at least one exposed part (1) in a second cavity (28); d) injection molding and solidification of the plastic molding material of the functional part (10) on the core surface (3) of the at least one exposed part (1); and e) opening of the second mold (25) and removal of the part. The injection molding method according to the invention is characterized in that for each exposed part (1)—to prevent irregularities such as flow marks and/or knit lines—a single injection nozzle (5) positioned to optimize the flow or at least two injection nozzles in a cascaded injection molding method are used, and that the plastic molding material for the exposed part (1) comprises at least one transparent polymer. The corresponding plastic parts manufactured by injection molding exhibit an exposed surface (2) and a core surface (3) facing away from the latter with at least one injection point (6), whereby the functional part (10) of the plastic part is injection molded onto the core surface (3) of the previously solidified exposed part (1).

A windshield wiper blade assembly comprises: an elastic wiper blade; first and second housings secured to and covering a top end of the wiper blade and made from a plastic material; and a middle housing disposed between the first and second housings and having two end segments and a middle segment extending between the end segments. The end segments of the middle housing cover and are secured to the top end of the wiper blade at the end sections of the middle portion, respectively, and have ends in contact with ends of the first and second housings, respectively. The middle segment defines a frame space for extension of a connecting piece therein and includes a skeleton and a plastic molding layer molded over the skeleton.

The present invention relates to a plastic component having a visible part that is made in one single layer from a plastic molding compound and that comprises a transparent or translucent matrix, and having a light source that comprises one or more lamp elements, situated under the surface of the visible part. The visible part is implemented as essentially opaque in relation to daylight and transparent or translucent in relation to the light emitted by the lamp elements. The visible part also contains admixed effect pigments and defines a surface appearance image which, when the light source is inactive, essentially corresponds to the surface appearance image of the remaining wall of an object in which the plastic component is installed and which, when the light source is active, is essentially determined by the light source activity. The plastic component according to the invention is characterized in that the lamp elements are selected from a group which comprises light-emitting diodes, organic light-emitting diodes, and fiber-optic light systems, the lamp elements at least partially being embedded in the plastic molding compound of the visible part. The manifold uses of this plastic component comprise installation in vehicles, paneling elements, and furniture, as well as in housings of greatly varying devices.

A motion detecting device has a stationary plastic sensor carrier. The stationary plastic sensor carrier has two sensor carrier sections and an insulation section. The carrier section has a first plastic material and the insulation section has a second plastic material. The insulation section extends between two adjacent sensor carrier sections. The sensor carrier sections and the at least one insulation section are integrally formed by a plastic molding process. Plated metal sensing surfaces are provided on the surfaces of the sensor carrier sections. Surface electrode contacts connect the plated metal sensing surface electrodes with a PCB and define at least one capacitive area between at the plated metal sensing surface electrodes. A plastic knob element is movably arranged on the plastic sensor carrier, such that the insulating plastic separator sections and the plated metal sensing surface electrodes are at least partly covered by the knob element.

The invention provides colored ceramics and a preparation method thereof. Ceramic mud for the colored ceramics at least comprises the following compositions in weight percentage: 20 to 35 percent of kaoline, 60 to 70 percent of at least two of pottery stones, lithium pottery stones, feldspar and quartz, 0.2 to 6 percent of coloring matter, and 1 to 5 percent of nanometer quartz. The method for preparing the colored ceramics comprises the following: a step of pulp injection molding, in which part of colored mud cake or colored mud strip is mixed with liquefacient with 0.3 to 0.8 percent of total amount for pulping, and the mud which is screened from a screen of between 80 and 120 meshes is injected into a mold to produce a hollow or solid briquette; and a step of glazing and maturing, in which the briquette which is manufactured by pulp injection molding or plastic molding is cemented and dried according to creativities, and are directly applied with clear glaze, and the glazed briquette body is placed in an oxydizing flame roller kiln or an electrical kiln for 1 to 4 hours at a temperature of between 1,150 and 1,200 DEG C for maturing. The method can not only reduce clinkering cost, but also improve the moisture retention, bonding performance and corrosion resistance of strong ceramic mud, and further show energy conservation and environmental protection.

Preformed corner connectors for mattress supports and box spring bases are provided to simplify and reduce the costs of constructing the same. The corner connectors are preferably unitarily formed by plastic molding or other suitable processes. The method of using the corner connectors includes preforming the same and attaching frame members with conventional fasteners for box spring bases and mattress supports as required.

The invention discloses a precision-forging plastic molding technology of a bell shell of a ball-cage type universal joint, comprising steps of warm-forging plastic molding and cold-forging plastic molding. The warm-forging plastic molding technology comprises the following steps: a. blanking; b. manufacturing a blank; c. coating; d. heating; e. directly extruding; f. upsetting; g. extruding reversely; h. normalizing, shaping, sand blasting, parkerising, and treating the surface by a manner of saponification; and adopting the forging plastic molding technology of combining the warm-forging plastic molding technology with the cold-forging plastic molding technology, firstly upsetting to obtain the pre-molding blanking material, secondly, extruding reversely in the chamber of the molding mold to form a ball channel and finally forming the inner spherical surface by using the cold-forging plastic molding technology. The product quality is steady, the production efficiency is improved, the production period is short, the method for adopting the machine tool after the hot-forging is replaced, the workload of the machine tool process is reduced, the precision requirements are met, the manufacturing cost and the period are reduced, and the development trend of the manufacturing field in the world is met.

The invention discloses a high electric conduction polyphenylene sulfide (PPS) composite material and the preparation method thereof. The percentage by weight of the compositions of the high electric conduction polyphenylene sulfide composite material is as follows: 40 to 70 percent of polyphenylene sulfide, 5 to 30 percent of conducting fiber, 5 to 30 percent of conducting powder, and other auxiliary agents from 0 to 5 percent. The conducting fiber and conducting powder in the conducing plastics provided by the invention disperse evenly with a plurality of lapping joints and high electric conductivity, thereby remarkably improving electric conductivity. The surface resistivity and volume resistivity of the material respectively reach 0.3-11.0 ohm and 0.07-8.5 ohm*cm, thereby meeting the requirements of plastic shaping techniques such as repeated injection molding, plastic extruding or die stamping. The processing art of the material is simple and can control the conducting fiber and conducting carbon black to evenly disperse in plastic particles, thereby enabling the PPS composite material to have high electric conductivity and meeting the requirements of industrial big production.

Disclosed is a method oft by using a plastic molding process, encapsulating an air-core coil with a moldable magnetic resin material prepared by kneading a mixture of a magnetic powder and a resin. The method comprises the steps of (a) preparing a molding die assembly which includes a plurality of dies adapted to define a cavity therewithin, and a positioning pin adapted to be movable in a vertical or horizontal direction within the cavity, (b) arranging the air-core coil at a given position within the cavity by the positioning pin, (c) charging the moldable magnetic resin material into the cavity and moving the positioning pin to a given retracted position in a course of the charging.

The present invention relates to composite plastic moldings containing A) a thermoplastically formable, heat-resistant composite film having A1) a carrier film of a thermoplastic resin and A2) a layer of a heat-resistant soft touch coating on one side of the carrier film (A1) and B) a thermoplastic layer on the side of the carrier film (A1) facing away from the soft touch coating, wherein the soft touch coating (A2) is obtained from a composition containing i) polyurethanes and/or polyurethane-ureas which are free from hydroxyl and/or amine groups, ii) ionically modified polyurethanes and/or polyurethane-ureas which contain hydroxyl and/or amine groups, iii) at least one crosslinking agent, iv) optionally film-forming resins other than A1) or A2), and v) optionally additives. The present invention also relates to a process for the production of these composite moldings and their use in telecommunications equipment and in vehicle, ship and aircraft construction.

A removable Flash integrated memory module card has a plastic shell and an integral Flash memory module. On the backside of the card, there are exposed contact pads. When the card is inserted into a card-hosting device, the card can communicate with the device through the exposed pads. The manufacturing method includes manufacturing of the memory module and utilizing plastic molding techniques for making the card outer body. The method involves preparing the substrate, mounting the components, testing the module, preparing the molding device, and molding the card body.