Abstract: A method of filling a capillary with a substantially void-free gel by forming the gel outside of the capillary and then extruding the gel into the capillary. The initial gel can be formed as a rod of gel much larger in diameter than the capillary into which it is to be extruded. This rod of gel is rinsed to remove polymerization contaminants and then dried to form a dried gel preform. The gel can be resolvated with a compatible solvent and then extruded into one or more capillaries.

Abstract: A method of encapsulating an article such as an electric part is disclosed which includes the steps of:(a) powder coating the article with a thermosetting resin powder coating composition to form a melted layer of the thermosetting resin composition around the article;(b) molding the melted layer of the thermosetting resin composition obtained in step (a) in a mold under pressure while maintaining the mold at a temperature lower than the softening point of the thermosetting resin composition, so that a solidified, molded layer of the thermosetting resin composition having a predetermined shape is formed around the article; and(c) heating the solidified layer obtained in step (b) to cure the thermosetting resin.

Abstract: A method of producing a weatherstrip for an automotive vehicle is included. This weatherstrip includes generally a sliding seal portion for sealing between a vehicle body and a window glass and a weatherstrip base portion for bordering an open edge of the vehicle body. The sliding seal portion is made of rubber material with which lubricant is blended so that the lubricant bleeds out of an outer surface of the sliding seal portion with use for providing low friction against sliding movement of the window glass. The weatherstrip base portion is made of conventional rubber material including no lubricant and is one-piece molded with the sliding seal member by extrusion molding.

Abstract: An integrated circuit card is manufactured by reaction injection moulding around the insert bearing the electronic components, and between high tensile skins which form opposed surfaces of the card. Apparatus is disclosed for the continuous manufacture of the cards between a pair of moving belts.

Abstract: An electromechanical device for moving magnetic tapes or disks has a metal load-bearing plate provided with openings and injection molded plastic control rods and shafts held in phase by injection molded plastic retention pieces connected through the openings. These retention pieces are provided with a greater clearance relative to the metal load-bearing plate than that achieved by injection molding by a deformation blow to the plastic control rods and shafts after molding.

Abstract: A process of forming an article wherein a resinous material is heated to a first temperature sufficient to release substantially all sorbed gases and to form a substantially gas free, clay-like precursor material. The precursor material is stored indefinitely prior to producing the material into a desired configuration and heating the formed material to cure such material into a stable solid configuration.

Abstract: A method of molding and a mold for making bathtubs are disclosed. The mold includes a mold receptor and a deck insert attached to the mold receptor face. The preferred deck insert has at least one projection designed to reduce the cross-sectional area of a portion of a void between the shell's deck and the deck forming face of the insert. Preferably, the distance from the outer edge of the shell's deck to the outer edge of the projection is about 16% of the length of the deck of the sanitary fixture. The mold receptor receives a shell which has a finish side and a non-finish side. The shell is placed in the mold receptor leaving a void between the non-finish side of the shell and the deck insert of the receptor. The insert is attached to the mold receptor to reduce the cross-sectional area of a portion of the space between the shell deck and mold receptor. A male mold engages the finish side of uhe shell, sealably retaining the shell to the mold receptor.

Abstract: A hinged plastic housing and a process for making same wherein a hinge formed from a deformable lamina is integrated with first and second enclosing members during injection of the plastic material. The deformable lamina is placed between the first mold section and the second mold section of an injection mold unit before the first mold section and the second mold section are clamped together to form injection mold cavities for the first and second enclosing members. The deformable lamina at least partially extends into the mold cavity for the first enclosing member and the mold cavity for the second enclosing member as well as therebetween. The first mold section and the second mold section are then clamped together and a plastic material is injected into the mold cavities and in bonding securement of the deformable lamina. The resultant housing is then removed from the mold unit with the deformable lamina hinge integrated with the first and second enclosing members.

Abstract: According to a method of producing a modular cover, a gate mark made during injection molding and left on a cover can not be seen from a vehicle occupant. A submarine gate is placed in a mold to contact with a surface of a molded modular cover which is hidden when the modular cover is in use. This mold is used to make a cover by one-color injection molding.

Abstract: A method for manufacturing the half body portions of a magnetic tape cassette or the like having an image transfer layer on its outer surface. An image transfer film is placed in a molding cavity, which film includes a base layer, a matting layer, and an image transfer layer. The function of the matting layer is to roughen the surface of the image transfer layer, while allowing easy subsequent peeling therefrom. A molten plastic is injected into the molding cavity against the image transfer layer. After the resulting product solidifies, the product is removed from the molding cavity, and the base layer and matting layer are peeled from the product, leaving the image transfer layer on an outside surface of the product.

Abstract: A magnetic disk cartridge which is free from the difficulty associated with the color of the cartridge being nonuniform in the area of weld lines which are likely to be formed in the injection molding of a colored synthetic resin, thus impairing the external appearance of the cartridge, and to a method of manufacturing the magnetic disk cartridge. In accordance with one embodiment of the invention, a magnetic disk cartridge is provided which is formed by injection molding a molten resin prepared by mixing master batch pellets of SAN resin at least 100 gm/10 min in melt flow rate and natural pellets of ABS resin at least 25 gm/10 min in melt flow rate in a ratio of 1:50 to 1:15 by weight.

Abstract: A method for encapsulating at least a portion of a heat sink insert with plastic material has been provided in which flashing has been eliminated. There is provided a heat sink insert which has a bottom surface, a shoulder portion, and a rib member formed integrally with and extending upwardly from the shoulder portion to define a crush zone. The rib member is deformed to conform with the contour of a cavity formed by the first and second mold plates so as to create a seal between the insert and the cavity. The rib member also serves to compensate for dimensional variations of the insert and the cavity.

Abstract: A reference pin (150) is provided on a bottom die (108) of a molding device (100). A lead frame (3) is carried with a chucking device (120) attached to an X-Y table mechanism (110). A hole (132) is formed in a stage (131) of the X-Y table mechanism. Respective images of the hole and the pin are detected by a TV camera (142) to control the relative position of the bottom die and the lead frame by driving the X-Y stage.

Abstract: In a method for assembling a lead frame between two plate-mold cavity plates, a lead frame that includes a plurality of integrated circuit chips mounted spaced at intervals in a row thereon, is placed on a bottom one of the cavity plates which has a row of cavities spaced apart at the same intervals as the integrated circuit chips, each chip being positioned over a corresponding cavity. The bottom cavity plate is held about horizontal on the base plate of an assembly fixture. Two short guide pins extend upward from the cavity plate, the lead frame having two pilot holes directly above the guide pins. Accurate positioning of the lead frame will permit penetration of the pilot holes by the guide pins.

Abstract: A process for making powder-free medical gloves that are nevertheless easy to don involves first forming a glove on a form by successively dip-coating layers of a coagulant containing acid-soluble powder dispersed throughout, an elastomer, and an antiblocking composition with particles distributed throughout. After curing the elastomer and applying a silicone coating, the glove is removed from the form and treated successively with acid, to dissolve the powder, and with bleach, to reduce blocking. Using this process, high quality natural rubber medical gloves can be produced.

Abstract: A method for encapsulating a seal member insert with plastic material has been provided in which the seal member insert is located precisely in a molded outer housing. There is provided an elongated mold core element having an undercut area at substantially its intermediate area. A first molten plastic is injected around the core element on each side of the undercut area so as to form annular retainer rings. The seal member insert is provided into the undercut area between the annular retainer rings. A second molten plastic is injected around the core element, the annular retainer rings, and the seal member insert so as to form the molded outer housing. The core element is then extracted so as to form a seal-insert molded product. The annular retainer rings serve as wall members so as to prevent the seal member insert from being moved out of the undercut area and into an undesired location when the second molten plastic is being injected.

Abstract: A method of making a molded applique product. A printed applique substrate is formed into a three dimensional shape and placed into a mold whereupon a molten resin is injected into the mold cavity space located behind the formed substrate.

Abstract: Pinhole-free, radiation absorbing, surgical quality latex gloves are formed from homogeneous suspension of natural rubber and high specific gravity metal or metal compound. The suspension is formed under conditions which prevent entrapment of gas in the suspension.

Abstract: Single and double injection molding using a single molding machine is made possible by providing two injection units, each having an injection nozzle, and a stationary platen three insertion holes into which the nozzles can fit. For double injection, the injection units are moved transversely of the stationary platen so as to orient both injection nozzles with a respective one of the insertion holes. For single injection, the injection units again are moved transversely of the stationary platen so as to orient one of the injection nozzles with one of the insertion holes, with the other nozzle not being so oriented.

Abstract: A method of injection molding a styrene resin or a composition thereof, which includes injection molding a molten molding resin material of a styrene-conjugated diene block copolymer containing 50 to 90% by weight of a styrene polymer or a molten molding resin material of a resin composition comprising 50% by weight or more of the styrene-conjugated diene block copolymer and 50% by weight or less of a styrene resin other than the styrene-conjugated diene block copolymer, wherein the molten resin is injected and filled into a mold with a wall surface temperature at core and cavity portions within the mold being made 110.degree. to 180.degree. C., and the molded product is demolded when the wall surface temperature of the core and cavity portions is lowered to the glass transition temperature or lower of the styrene polymer moiety in the block copolymer. The obtained molded product has a high impact resistance.