Abstract: A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.

Abstract: In one embodiment of the present invention, a method comprises a plurality of operations. An operation is performed for depositing a quantity of article-forming media within a media receiving cavity of article forming equipment. After depositing at least a portion of the article-forming media within the media receiving cavity, an operation performed for depositing a volume of a prescribed fluid into the media receiving cavity. Depositing the prescribed fluid includes moving a first fluid delivery device through the quantity of the article-forming media while injecting the prescribed fluid through the first fluid delivery device into the quantity of the article-forming media.

Abstract: Diamond SPM and AFM probes which are durable, particularly for scanning hard surfaces such as diamond surfaces. Interlayers and seeding can be used to improve diamond deposition, and the diamond can be ultrananocrystalline diamond (UNCD). Tip sharpening improves resolution.

Abstract: A sliding or friction element that can be mechanically stressed is provided that includes a mechanically stressed section that is formed of a combination of at least two different plastics, one of which acts as a lubricating material. The first plastic (11) forms a plastic matrix, in which the second plastic (12) is chemically bonded.

Abstract: The present invention discloses a molded article with an antimicrobial property, and a manufacturing method thereof which can prevent contact of bacteria or viruses by combining the Kimchi lactic acid bacteria culture fluid having antibacterial and antivirus effects with a raw material to mold the article. The molded article needing the antimicrobial effect is provided with the antimicrobial property, by using the Kimchi lactic acid bacteria culture fluid with a wide antibacterial spectrum singly or in combination with nano metal particles. The Kimchi lactic acid bacteria culture fluid is combined in the molding step of the article, for reducing the manufacturing time and simplifying the manufacturing process.

Abstract: Provided is a semiconductor nanoparticle-encapsulating vinyl polymer including vinyl polymer particles; and semi-conductor nanoparticles, uniformly dispersed in the vinyl polymer particles, having an average particle size of 1 to 150 nm, wherein the semiconductor nanoparticles are encapsulated by the vinyl polymer particles. Provided is also a mixture of the semiconductor nanoparticle-encapsulating vinyl polymer with a commercially available vinyl polymer. In the nanoparticle-encapsulating vinyl polymer and the mixture, since the semiconductor nanoparticles are encapsulated by the vinyl polymer particles, they are highly dispersed even in vinyl polymer products. Therefore; an aggregation phenomenon of semi-conductor nanoparticles that may be caused by physical mixing of semiconductor nanoparticles and a commercially available vinyl polymer can be prevented, thereby remarkably increasing a reduction in dioxin emission during incineration of the wastes of vinyl polymer products.

Abstract: A disposable container for biologic materials comprising a sheet of flexible material with an access area integrally molded in the sheet. At least one port in the access area passes fluid into the container. The sheet is folded along the access area such that an upper part is adjacent a lower part, and the upper part is attached to the lower part. The method for making the container includes forming a sheet having an access area integrally molded in the sheet, folding the sheet along the access area, and joining the upper part to the lower part. The upper and lower sheets and the access area are injection-molded as a single, unitary piece. This process uses a mold having a central triangular prism and conforming upper and lower blocks.

Abstract: A method of forming a chemical mechanical polishing pad includes providing a first reactant including an isocyanate functional polyurethane prepolymer at a temperature above about 60° C., providing a second reactant including a diamine at a temperature above about 100° C., impingement mixing the first reactant and the second reactant within an impingement mixer to begin formation of a polyurea polyurethane elastomer, wherein the mixing is at a ratio of the first reactant to the second reactant of about 3:1 to about 6:1, casting the polyurea polyurethane elastomer that is formed from the mixed first and second reactants; and forming the polyurea polyurethane elastomer into chemical mechanical polishing pad dimensions. The polyurea polyurethane elastomer may further be provided with surface grooves and can be used as a single layer pad or formed into various stacked pad arrangements.

Abstract: A norbornene-based resin molded article obtained by bulk polymerizing a norbornene-based monomer in a mold; wherein said norbornene-based resin molded article is characterized by comprising a hybrid filler obtained by high-speed mixing the two or more kinds of fillers in dry method. Preferably, said hybrid filler is obtained by high-speed mixing, at least a fibrous filler having 5 to 100 aspect ratio and a particulate filler having 1 to 2 aspect ratio, in dry method. The present invention provides the norbornene-based resin molded article superior in rigidity and dimensional stability; and the method of production thereof.

Abstract: There is provided a skin material with a substrate and a polymeric layer. The polymeric layer has a first surface adhering to the substrate and a second surface being exposed to the outside and formed with fine recesses. The fine recesses have a depth of 30 to 130 ?m and a projected area ratio of 5 to 20% with respect to the total projected area of the second surface of the polymeric layer.

Abstract: Method for manufacturing a carbonized carbon-carbon composite preform, by: mixing (a) chopped carbon fiber, chopped stabilized pitch fiber, or chopped oxidized polyacrylonitrile (PAN) fiber, (b) thermoplastic pitch binder powder, and (c) activated carbon powder to form a mixture of 15-60 parts by weight of chopped carbon fiber or chopped stabilized pitch fiber or chopped oxidized PAN, 28-83 parts by weight of thermoplastic pitch binder powder, and 1-12 parts by weight of activated carbon powder; depositing this mixture into a mold; pressing/heating the materials in the mold to form a preform by compaction; removing the compacted preform from the mold; and carbonizing the compacted preform. The preform is preferably configured in the form of an aircraft landing system brake disc.

Abstract: The invention relates to a process for molding a profiled bead (1) made of a plastics material composed of a plurality of components, especially of a polyurethane-based material, onto at least a peripheral part of a glazing unit (2) with the aid of at least one injection head (3), in which process said material ejected through an outlet opening (4) in the injection head (3) then penetrates into a molding cavity (5) to form said molded profiled bead, characterized in that the material ejected through said outlet opening (4) in the injection head (3) penetrates directly into said molding cavity (5).

Abstract: In a recording tape cartridge, cut-out portions are formed at an inner peripheral edge portion of a metal plate. By providing gates at the cut-out portions, the metal plate is insert molded without depending on submarine gates. Because the gates are provided, at the time of molding a reel hub, a molding material flows radially from a hole portion toward a tubular portion and a lower flange.

Abstract: Hollow fiber membranes are potted by injection molding a thermoplastic material into a cavity containing the fibers. The cavity is formed in part by the interaction of a mold and a layer of an adhesive pre-applied to a bundle of the membranes.

Abstract: There is disclosed an imprinted polymer support for solid phase organic synthesis (SPOS). The polymer support being obtainable from a method that comprises providing a substrate and a mold, the mold having a defined surface pattern. A composition is placed between the defined surface pattern of the mold and the substrate. The composition comprises a polymerisation medium with at least one functional monomer and a free radical initiator. The composition is polymerised to form an array of polymer imprints adhered to the substrate.

Abstract: A modularly constructed object comprising: a frame formed from a mouldable material; and one or more sheets of material, each having at least part of one edge embedded in the frame so that the one or more sheets are held in place by the frame. A method for constructing the same.

Abstract: A method of insert molding a preformed item into a molded product, the molded product being formed by injecting a moldable material into a mold, is disclosed. The method includes adhering the preformed item to a surface of the mold with an adhesive, wherein the surface to which the preformed item is adhered is free of any features provided for holding the preformed item in place on the mold surface. The method next includes injecting the moldable material into the mold such that the moldable material at least partially surrounds the preformed item, and curing the moldable material. Articles molded via the disclosed method are also described.

Abstract: Syntactic polyurethanes are prepared by mixing hollow microspheres with polyurethanes by a process in which, in a first step, the polyurethane system components are reacted and, in a second step, the feeding of the hollow microspheres is effected in a mixing apparatus, the mixing apparatus being free of dead space and comprising i) a mixing pot, ii) a feed for polyurethane, iii) a feed for hollow microspheres, iv) a stirring element and v) an outlet orifice.

Abstract: A thread or other element for bonding fibers in a fibrous reinforcement for use in a fiber composite is such that it is at least degraded in the course of the production of said fiber composite.

Abstract: A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of: 1) Providing a first component A comprising a polythiourethane prepolymer having isocyanate or isothiocyanate end groups and a viscosity at 25° C. ranging from 0.02 to 0.4 Pa.s; 2) Providing a second component B comprising a polythiourethane prepolymer having thiol (SH) end groups and a viscosity at 25° C. ranging from 0.2 to 2.0 Pa.s; 3) Mixing together first and second components A and B and filling a moulding cavity of a casting mould assembly with the resulting mixture; 4) Curing said mixture to obtain a transparent solid substrate, said curing step comprising: a) a first step for polymerizing said mixture to obtain a gel within 1 to 10 minutes; and b) a second step of post-curing the gel to obtain the transparent solid substrate; and 5) Recovering the transparent solid substrate from the mould.

Abstract: A release agent composition for molding a polyurethane foam is disclosed. The agent is obtained by blending a cationic surfactant having an amino acid salt of alkyl amine, a predetermined substance having release characteristic and a film forming agent. Furthermore, it is preferable that a polyethylene glycol type non-ionic surfactant with an additional number of ethylene oxide in the range from 1 to 15 moles, preferably, in the range from 5 to 10 moles is used in combination.

Abstract: The invention relates to a method for manufacturing a multi-layered molded synthetic part comprising a preformed elastomeric molded skin (5), a molded carrier (8) of a thermoplastic material and optionally an intermediate foam layer (6). In this method, the elastomeric skin (5) is molded in a first step and the thermoplastic material for the carrier (8) is subsequently molded in molten state to the back of said molded skin (5). According to the invention, the molded skin is made of a thermosetting synthetic material. Compared to a thermoplastic skin, such a thermosetting skin is less subjected to visible defects, in particular in case it has been provided with a superficial texture such as a leather grain, when the thermoplastic carrier is molded thereto. Molding of the thermoplastic carrier can be done by an injection molding, an injection pressure molding or a low pressure molding technique.

Abstract: A method of manufacturing a steering wheel is provided that includes the steps of placing the steering wheel in a molding tool and injecting a flowable, curable composition therein. The molding tool has internal surfaces contoured to impart to articles molded therein the appearance of genuine leather. The parting line or splitline of the molding tool is positioned such that it is substantially aligned with a region of the molding tool contoured to impart to the article molded therein the appearance of a seam on a leather wrapped steering wheel. A method of forming a molding tool for injection molding a steering wheel having a covering is also provided. The method includes the step of forming a separable molding tool from a replica of a leather wrapped steering wheel, the molding tool having regions proximate an interface of the mold portions contoured according to the stitched leather around the outer periphery of the wrapped steering wheel core.

Abstract: The present invention is a high performance microcellular polyurethane foam suitable for numerous applications normally considered outside the realm of conventional solid systems. Also included in the present invention is a method of manufacturing the high performance microcellular polyurethane foam using controlled water addition, foam surfactant addition, a modified catalyst system, the addition of a delayed action tin catalyst and a reduced NCO/OH ratio. The present invention has special application for industrial parts, especially the bowling equipment industry and the cardboard manufacturing industry.

Abstract: An innovative robotic foam application process that integrates system communications, non-contact vehicle insertion point locations, and applications controls to accurately dispense a two-component structural foam at a high volume and flow rate. The process begins by first inserting a baffle within the support structure. After an electrocoat application and bake, the baffles expand and are sealed within the support structure to form cavities having a fill hole. A hydraulic driven robotic dispensing system equipped with a high-pressure static mixer senses the respective fill hole, moves a robotic arm to a location sensed, and injects a high volume of mixed two-component viscous material within each of the respective located fill holes at a high fill rate. After dispensing, the viscous material undergoes an exothermic curing reaction to cure and is expanded to substantially fill each cavity.

Abstract: Polyurethane moldings are produced by conveying in shot operation at least one isocyanate component and at least one polyol component for a predetermined time-interval &Dgr;t into a mixing chamber with predetermined volumetric flow-rates {dot over (V)}s/iso for the isocyanate and {dot over (V)}s/polyol for the polyol and with predetermined pressures ps/iso for the isocyanate and ps/polyol for the polyol, mixing those components in a mixing chamber, and discharging the polyurethane reaction mixture into a mold. Prior to shot operation, the components are conveyed in a circuit through circulation lines between the mixing head and the respective component storage vessels. The pressures of the components are measured by means of pressure sensors and are transmitted via pulse lines to a control device.

Abstract: A method of making a decorative polyurethane panel which replicates the look of a pre-selected material is provided. A full size model of the material is first created having the desired texture and appearance. A tooling is then constructed to contain the model. The model of the material is encased with a two part silicone rubber compound that fills said tooling. The newly formed silicone mold is then removed from the tooling. Polyurethane components are separately mixed. The polyurethane mixture is then dispensed into the mold. The filled mold is covered with a vent paper. The mold is then fed into a press and pressure is applied. The mold is removed from the press and the newly created panel is then removed from the mold and allowed to cure. An outer finish is then applied to the panel so that it resembles the decorative appearance of the material.

Abstract: Syntactic polyurethanes are prepared by mixing hollow microspheres with polyurethanes by a process in which, in a first step, the polyurethane system components are reacted and, in a second step, the feeding of the hollow microspheres is effected in a mixing apparatus, the mixing apparatus being free of dead space and comprising

Abstract: A vale assembly for a RIM system includes a body which defines a passage, a support structure within the passage, a poppet, and a detachable member which retains the poppet to the support structure. The valve assembly threads into a vent within a mold to provide a communication path for expanded material within the mold cavity. In operation, when a flow through the passage is below a predetermined force the detachable member is retained upon the stem and the valve remains open to provide venting of the mold cavity. Once the mixture expands into a more solid material and expands into the vent and valve assembly, the material flow provides a greater force against the poppet. Eventually, when a predetermined material flow generates a force upon the poppet greater than the predetermined force, the detachable member is detached from the stem and the poppet is pulled from the support structure.

Abstract: A conductive roller for use in a laser printer includes a solid, thermoset urethane comprising a metal salt and having a hardness of between 30 Shore A and 50 Shore A on cube and a volume resistivity of 1E6 ohm-cm and 9E8 ohm-cm.

Abstract: An improved apparatus and process for the production of isocyanate derived fiber reinforced materials by reactive processing. The improved apparatus comprises a mixing apparatus containing a mixing chamber, means for the metered introduction of at least two liquid reactive chemical streams into the chamber, means for introduction of reinforcing fibers into the chamber, an outlet duct for conducting a liquid reaction mixture comprising reinforcing fibers from the mixing chamber, and at least five gas jets suitably arranged to promote the fluidization and improved mixing of the liquid reaction mixture with the reinforcing fibers as the liquid reaction mixture comprising reinforcing fibers emerges from the outlet tube. Also disclosed is an improved process for producing fiber reinforced composites by employing the apparatus, and composites prepared according to the improved process.

Abstract: The invention relates to laminated parts comprising outer layers and polyurethane sandwich materials, and to a method of producing these laminated parts and to their use in the automotive industry.

Abstract: A method of forming a polyurethane article wherein first and second components of a polyurethane system are sprayed into an unconfined space above a mold. The first and second components are sprayed together to mix initially in the space above the mold and then are deposited in the mold on an in-mold coating that was previously applied to the mold. The two components of the polyurethane system and in-mold coating are subsequently removed from the mold as a flexible polyurethane skin. The skin may then be placed in a second mold along with a reinforcement. Structural polyurethane foam may then be injected to the second mold where it bonds to the reinforcement and the skin to form a finished polyurethane article having a flexible skin adhered to its surface. A post-mix spray nozzle assembly is provided with a central nozzle forming a first hollow conical spray pattern and a coaxially aligned annular nozzle forming a second hollow conical spray pattern.

Abstract: The present invention is a method for making a composite structure that includes three resin impregnated structural cloth layers including a bottom sheet, a top sheet and a core sheet. The core sheet is a continuously curved shape with flat valleys that are bonded to the bottom sheet and flat peaks that are bonded to the top sheet. In the invention process, a dry core sheet is sandwiched between two wax core molds that form the core sheet. The core molds and the core sheet are sandwiched between dry top and bottom sheets by rigid molds as the flat peaks and valleys of the core sheet make contact with the top and bottom sheets through openings in the core molds. Liquid resin is transferred into the dry sheets and then cured. The lay up is disassembled and the wax core molds are melted and drained from the finished, rigid structure.

Abstract: A process for manufacturing a sole for shoes composed of a tread sole made of vulcanised rubber provides, for the vulcanizable rubber, a mixture composed of a vulcanizable nitrile rubber (NBR), at least one hydroxyl acrylic resin, at least one hydrocarbon resin, at least one reinforcing filler, and at least one vulcanization accelerator. A dosed amount of the mixture is introduced in a first mold cavity (2), in which the bottom is constituted by a piston (12), which is kept at a temperature of 100-200 ° C., while in an upper region there is a dummy last (8), which is also kept at a temperature of 100-200 ° C., the two temperatures being adjustable independently of each other. After preparing the tread sole in this manner, the sole bottom, supported by the piston, descends and forms an additional cavity into which the two-component polyurethane is injected. The vulcanizable rubber with the mixture adopted has many free bonds, which combine with the polyurethane, giving rise to a very strong coupling.

Abstract: An improved vehicle component constructed with a rigid shell having a soft outer covering which absorbs impacts and disperses energy thereby protecting occupants of a vehicle. A method of vehicle component construction formed from injecting polyurethane into a top vented split mold having a shell positioned within the mold wherein the process sandwiches the shell there between to provide an external protective cushion.

Abstract: A release agent composition for molding a polyurethane foam is disclosed. The agent is obtained by blending a cationic surfactant having an amino acid salt of alkyl amine, a predetermined substance having release characteristic and a film forming agent. Furthermore, it is preferable that a polyethylene glycol type non-ionic surfactant with an additional number of ethylene oxide in the range from 1 to 15 moles, preferably, in the range from 5 to 10 moles is used in combination.

Abstract: Fluoropolymers consisting of alternating perfluorocyclobutane and aryl ether linkages possess suitable properties for optical waveguides and other devices using refractive properties of the polymers. Perfluorocyclobutane (PFCB) polymers having aryl groups alternating on an ether chain have shown useful physical properties for optical waveguide applications. Processes for micromolding such polymeric films by replicating a pattern or image directly from a silicon master, rather than from a polydimethyl siloxane (PDMS) mold, are disclosed.

Abstract: The subject of the invention is a method of manufacturing centrifuged, glass fiber-reinforced synthetic material pipes wherein liquid, curable resin, which contains a filler, together with glass fibers, additives for the curing process, possibly also with sand, is introduced into a rotating mould and the temperature of the mould is between 40° C. and 75° C. as the raw materials are introduced. The resin used in the layers in the outer region of the pipe has a gel time which is equal to or greater than the gel time of the resin used for the inner region of the pipe and the resin comprising a filler content of at least 40% is used. Furthermore, once the exothermal reaction has commenced, warm water is sprayed onto the mould in order to maintain the temperature of the mould at least at 60° C. until the pipe is removed.

Abstract: A method of producing a rubber-resin composite whose vulcanized rubber and thermoplastic resin moldings are bonded together by high adhesive strength at low cost, satisfying both moldability and mechanical strength. It comprises: (1) making the vulcanized rubber molding by vulcanization molding, (2) forming an adhesive layer, whose principal ingredient is chlorosulfonated polyethylene, on a surface of the rubber molding to be bonded to the resin, and (3) while arranging the rubber molding in a mold, pouring the thermoplastic resin containing 30˜60 wt. % of glass fiber in a molten state into the mold to form the resin molding.

Abstract: A high durability composite textile material, like a synthetic suede, is prepared according to a procedure that comprises the impregnation of micro-fibers non-woven fabric substrate with a polyurethane-polyurea solution. This polymer solution, is made by a pre-polymerization phase between diisocyanate and polyols, a dilution phase of the pre-polymer thus obtained and an extension step of the pre-polymer, the extension of the pre-polymer free isocyanate groups is carried out by means water addition.

Abstract: A process for producing golf ball comprising a core and a cover layer, wherein the cover layer provides one or more deep dimples that extend through the cover layer and/or into a layer or component underneath is disclosed. The cover may be a single layer or it may include multiple layers. If the cover is a multi-layer cover, the dimples extend to or into at least the first inner cover layer, and may extend into two or more inner cover layers. If the cover is a single layer, the dimples extend into the core. The dimples may be spherical or non-spherical, and the portion of the dimple that extends to or into the next inner layer may be the same or different shape as the outer portion of the dimple.

Abstract: A process for making a golf ball with one or more deep dimples is disclosed. The process utilizes a molding assembly for making a golf ball which includes a mold body that defines a molding cavity. The molding cavity is adapted to accommodate and preferably retain a golf ball core during a molding operation of one or more layers about the core. The molding assembly includes at least one material flow inlet, at least one material flow channel extending between and providing fluid communication with the material flow inlet and the molding cavity. At least one portion of the material flow channel has a plurality of bends and at least one branching intersection adapted to promote turbulence in a liquid flowing therethrough. The molding cavity includes at least one outwardly extending protrusion that forms a deep dimple that extends through the cover of the golf ball to and/or into the underlying component of the golf ball upon molding.

Abstract: A system is provided for application of a layer permanently adhering to the inside of a breast prosthesis formed as a shell-shaped body made from a soft-elastic material, in which a two-component silicone rubber forming the adhesive layer is injected into a mold prior to curing of the body and then cured together with the body. Alternatively, the two-component silicone rubber forming the adhesive layer is first cured in a shell, with the shell then being applied to the body in a mold and then cured again with the body. In a third alternative, the adhesive layer is cured while being joined to a carrier film, with the carrier film then being adhered to the prosthesis sheath which is then filled with addition-vulcanizing two-component silicone rubber and cured in a mold.

Abstract: A molding apparatus and method of use thereof. The molding apparatus has a stationary mold base, and at least one moveable mold core rotatable into and out of a facing relationship with the stationary mold base. When the moveable mold core is in its closed position, it cooperates with the stationary mold base to define a mold cavity. The mold base may be shaped so as to aid in forming a part, or to hold a sheet of material onto which molding material is to be deposited so as to encapsulate the part on one or more edges or surface regions. Structure may also be encapsulated onto the surface of the material during the molding operation.

Abstract: Microfabricated devices and methods of manufacturing the devices are disclosed. The devices are manufactured from a substrate having microscale fluid channels, and polymerizing a polymerizable mixture in the channels to form stimuli-responsive operating components of the device. The operating components can be functional or structural components. The method of manufacture obviates the traditional assembly of microscale components to form a device because the microscale components are formed in situ on or within the device.

Abstract: The invention features methods of making living tissue constructs having a predetermined shape by providing a negative mold having a defined shape; suspending isolated tissue precursor cells in a hydrogel to form a liquid hydrogel-precursor cell composition; introducing the liquid hydrogel-precursor cell composition into the mold; inducing gel formation to solidify the liquid hydrogel-precursor cell composition to form a living tissue construct; and removing the living tissue construct from the mold after gel formation.

Abstract: The effects of processing parameters and suspension chemorheology on the deposition behavior of SFF components derived from polymeric-based gelcasting suspensions combines the advantages associated with SFF fabrication, including the ability to spatially tailor composition and structure as well as reduced tooling costs, with the improved handling strength afforded by the use of gel based formulations. As-cast free-formed Al2O3 components exhibited uniform particle packing and had minimal macro-defects (e.g., slumping or stair casing) and no discernable micro-defects (e.g., bubbles or cracking).

Abstract: Filler-containing molded parts or articles are produced from a free-flowing reaction mixture, e.g. of polyol and isocyanate, in a manner which permits the changeover to a different filler content to be carried out more rapidly and, possibly, without material loss. This is achieved by dividing at least one of the reaction components into at least two portions, at least one of which is charged with filler, by adjusting the mixing ratio of these portions and hence the filler content of the finished molded part. At least two storage vessels are provided for at least one of the reaction components. Adjustable metering devices are arranged between these two storage vessels and the mixing device.

Abstract: A method for the continuous production of expanded plastic material for forming panels and the like, in which during the pouring step, at least one reaction component and a mixture of the remaining components are introduced at high pressure in a pouring channel, by way of two injection assemblies. The mixture is provided downstream of a high-pressure pump and during the pouring hold step the remaining components of the mixture are individually placed in a recirculation step, without undergoing cross-contamination.