To effectively prevent a breakage of a plate when a gasket body formed of a rubber-like elastic material is integrally molded at both faces of the plate formed of a brittle material such as carbon. In order to attain this object, there is provided a method of manufacturing a plate-integrated gasket in which a gasket body formed of a rubber-like elastic material is integrally formed at both sides of a portion along a peripheral edge of a plate in the thickness direction, where an area located between gasket molding cavities defined by clamping the plate between split dies of a metal mold in the plate is formed to be a relatively thick portion at a position, facing an opening of a gate through which a molding material is injected into the cavities, and in the vicinity thereof.

Provided is a resin molding in which two types of substrates have a connection part constituted of a thin part provided from the one substrate to the other substrate with a boundary defined by end surfaces of the respective substrates, wherein the density of the one substrate in the connection part is higher than the density of a base part excluding the connection part. The resin molding can have a configuration in which the one substrate is a plate-like substrate including reinforcing fibers and a first thermoplastic resin binding the reinforcing fibers to each other and the other substrate is an injection-molded member connected along the plate face direction of the one substrate from an end surface of the one substrate. Moreover, it is preferred that the connection part have, on the side thereof closer to the other substrate, a section gradually thinned from a position at which the connection part extends and the connection interface be located at an intermediate part of the part that is gradually thinned. It is preferred that the reinforcing fibers be plant fibers, such as kenaf.

An injection mold for encapsulating a substrate comprises a lower mold component and an upper mold component adapted to form an encapsulation mold at an edge of the substrate when the upper mold component engages the lower mold component. The lower mold component comprises a substrate support and wherein the upper mold component comprises a recess. The injection mold includes a tiltable insert sized and shaped to slide within the recess to form a seal for the encapsulation mold, the insert having a substrate-contacting surface defining an area of the substrate contacted by the insert. The injection mold includes a plurality of pressure-exerting actuators connected to the tiltable insert and each being configured to independently apply pressure on the substrate via the insert, wherein the plurality of pressure-exerting actuators are adapted to equilibrate a total predetermined pressure exerted by the insert substantially evenly across the area of the substrate-contacting surface.

A method for applying a seal onto a plate, including, providing a tool containing at least one support element made of solid material including a recess, a support element made of flexible material including a first part and a second part where said support element made of flexible material is arranged at least partially in said recess, and a means for exerting a pressure in a compensation chamber of said recess, where said compensation chamber is delimited at least partially by said second part of said support element made of flexible material.

An injection molding apparatus for inserting atypical stiffener including an upper mold provided with an upper core and an under mold provided with an under core for manufacturing an injection molding product by receiving synthetic resin melt and curing in a state in which an atypical stiffener whose size is not constant is inserted, may include elastic clampers supported by the under mold, embedded in the under core, interlocked with the size of the atypical stiffener, and elastically pressurizing both sides to hold the atypical stiffener to be inserted into a correct position between the upper core and the under core by the atypical stiffener when the synthetic resin melt is introduced.

A method for producing a composite sealing element, in particular for forming a seal at a retractable pane of a vehicle window, wherein the composite sealing element is produced from at least one extruded element portion and at least one element part formed by injection molding in a mold cavity of a mold, with the element part being molded onto an end face, bounding the mold cavity, of the extruded portion. A change in the dimensions of the composite sealing element as a result of the length of the extruded element portion differing from the nominal value is counteracted by changing the arrangement of the end face of the extruded element portion with respect to the mold cavity.

A method of embedding opto-electronic components in a layer, wherein the components are disposed beside one another to be spaced apart on a carrier, including providing a molding tool having a bearing plate, wherein the bearing plate on a lower side includes resilient bearing regions, bringing the bearing plate by way of the resilient bearing regions to bear on upper sides of the components, filling an intermediate space between the components, the carrier, and the bearing plate with a molding material, curing the molding material to form the layer, and removing the molding tool from the layer and the embedded components.

An over-molded valve stem for a valve assembly includes a rigid inner member and a unitary elastic cover molded over the inner member. The inner member includes a main section and an arm extending from the main section. The cover includes a main cover portion, an arm cover portion, and an end portion, with the end portion being spaced from the main cover portion by the arm cover portion. The main cover portion is disposed over the main section with the end portion and main cover portion defining diameters that are larger than the diameter of the arm cover portion. The end portion can include an integral seal member for engaging with a bore of the valve assembly. A method of making the valve stem involves molding the cover about the inner member such that a parting line doe not axially extend across sealing surfaces.

A method for applying a seal onto a plate, including, providing a tool containing at least one support element made of solid material including a recess, a support element made of flexible material including a first part and a second part where said support element made of flexible material is arranged at least partially in said recess, and a means for exerting a pressure in a compensation chamber of said recess, where said compensation chamber is delimited at least partially by said second part of said support element made of flexible material.

A device for injection-molding and for overmolding objects has an upper element and a lower element, which surround a contiguous volume consisting of a filling space for holding the object and casting material and a sprue for holding casting material. The upper element is movable in relation to the lower element. A piston is arranged within the upper element in an integrated manner and is movable relative to the upper element. The position of the piston can be varied in accordance with a dimension of the object in an axial direction and the piston has a protrusion for changing a volume as filling amount balancing of the casting material within the sprue such that the device is filled with a constant amount of casting material irrespective of the dimension of the object in the axial direction and a volume varying with the dimension of the object in the axial direction.