An injection molding method for a semifinished product includes a semifinished product emplacement step, a semifinished product pre-compression step and a forming step. First, a pair of mold with a forming space is provided. A semifinished product is put into the mold, and a first joint is performed to the mold by a press-fit jig, fixing the semifinished product in the forming space. The semifinished product is also tightly fitted with the mold. Next, a first open-die is performed and the press-fit jig is removed. After that, a second joint is performed, and a forming material is injected into the forming space. Finally, a second open-die is performed, and then a finished product is formed. By the semifinished product pre-compression step, the forming material can be prevented from resulting in spill or burr on the semifinished product, thereby improving the yield of injection molding.

An insert molding sheet to be used for insert molding has a positioning rib to be fixed to a mold facing a cavity.

The invention concerns a hybrid part (11) for a motor vehicle, comprising at least one metal insert (1) overmoulded in a layer of plastic or composite material (17), the insert (1) being at least partially covered on at least one of its faces (7a, 7b) by a layer of material of a given thickness; and comprising at least one relief (5) extending from one of its faces (7a, 7b). The height exhibited by the relief or reliefs (5) is less than or equal to the thickness of the layer of plastic or composite material overmoulded on said face (7a, 7b) of the insert (1), so that the contact between the reliefs (5) and the walls of the mould ensures the positioning of the insert (1) in the mould during the overmoulding operation.

The present disclosure includes systems, devices, and methods for preventing contamination during formation of an optical article. In some implementations, a device for preventing contamination of a mold cavity during injection molding of a function wafer includes a containment band having an annular base that defines a first opening configured to receive a functional wafer. The device also includes one or more sidewalls that project a first direction from and surround at least a portion of the first opening. The one or more sidewalls may be configured such that, during formation of an optical article, a first portion of the functional wafer is in contact with the one or more sidewalls.

A joint assembly comprising at least one extruded profile member and at least one molded member connected to the profile member by an injection molding process. The extruded profile member comprises at least one pre-processed structured surface area adapted to increase grip between the profile member and a molding tool during the molding process. A method for forming a joint assembly is also disclosed, comprising the steps of comprising: inserting an extruded profile member in a molding tool, the extruded profile member and/or the molding tool having a structured surface area to increase the friction between the molding tool and the extruded profile member; clamping the molding tool and bringing the structured surface in contact with the molding tool and/or the extruded profile member to hold the profile member in place, and injecting material into the molding tool to produce a molded member connected with the extruded profile member.

A lure includes one or more cores having a surface shape and coloration configured to represent an anatomy of a food for a game fish with one or more outer portions of translucent material disposed thereabout. The outer portion is at least partially flexible with one or more outer fins and/or tails configured to cause the lure to move through water in conformance with a mode of transit. The core presents a three-dimensional appearance of a schooling baitfish, a bottom baitfish, a crustacean, an amphibian, a worm, a grub, an insect, a spider, a leech, or another creature that is attractive to fish. The core may include a surface shape and/or coloration that represents a mouth, an eye, a fin, and/or one or more gills or opercles. The core may be formed around a rigid object such as a hook, a line leader, or a weight.

A method of making a saddle having a shell and a padding involves arranging the shell in thermoplastic polymer inside a mould for injection moulding having a die and a punch, the shell having a support surface, which in use faces the padding, and a supporting surface coupled to an inner wall of the punch or of the die, the support surface forming a wall of the moulding cavity; closing the mould; and making the padding by injection moulding a thermoplastic polymer over the shell, between the support surface and the mould.

An article includes a hollow enclosure defining a void. The void has a first section and a second section separate from the first section. An electronic component is housed in the first section and the second section of the void. A low pressure mold material is molded into the first section of the void and cured around a first segment of the electronic component to encapsulate the first segment of the electronic component. A support seal is inserted into the second section of the void adjacent a second segment of the electronic component. The support seal defines a sealing barrier on one side of the low pressure mold material that limits the flow of low pressure mold material out of the first section of the void.

In the primary molding step, the insert core having axially-projecting convex portions aligned apart from one another in the circumferential direction is located in a primary molding die, and the injection molding is performed. In the secondary molding step, the annular internal resin member and the insert core which have undergone the primary molding step are located in a secondary molding die, and the injection molding is performed. Gates for injecting molten resin in a cavity of the secondary molding die are located in the secondary molding die so that welds that are joining points of the molten resin in the secondary molding step are positioned in the radially outside of rib portions.

A method of molding a resin molded product, including: a first molding step of injecting a first resin molding material into a first molding die to form a first resin product, wherein a fixing protrusion is formed on at least one of an inner and an outer wall part of the first resin product, and has a shape in which a width increases in a direction extending from the gap; and, a second molding step of positioning the first resin product in a second molding die, and injecting a second resin molding material at least into the gap of the first resin product to form a second resin product, wherein the fixing protrusion is embedded into a fixing recess disposed on the second molding die, thereby limiting movement of the fixing protrusion in a direction towards the gap.