767 results about "Thermal compression" patented technology

Embodiments of the invention are directed to apparatus and methods for converting spatially homogeneously polarized light into spatially inhomogeneously polarized light having a fast axis orientation that varies in a smooth and continuous manner over a pupil aperture. A space-variant waveplate referred to herein as a polarization converter includes an optically transmissive window characterized by a symmetric stress birefringence that provides at least λ/4 retardance and, more particularly, λ/2 retardance over an annular region centered about the optical axis of the window. Structural embodiments of the polarization converter include a mechanical compression housing and a thermal compression housing. Radially and azimuthally polarized vortex beams including cylindrical vector beams and counter-rotating beams can be generated from uniformly plane polarized input beams propagating through the polarization converter. Low-order polarization vortex beams can be optically combined to produce higher-order scalar vortex beams. Embodiments of the invention are also directed to various optical illumination and imaging systems utilizing the apparatus and methods described herein.

The invention provides an electrostatic spinning nanofiber membrane as well as a preparation method thereof. The electrostatic spinning nanofiber membrane provided by the invention comprises a fiber membrane obtained by electrostatically spinning a high-melting-point polymer and a fiber membrane obtained by electrostatically spinning a low-melting-point polymer, wherein the difference on the melting points of the high-melting-point polymer and the low-melting-point polymer is not less than 10 DEG C. The electrostatic spinning nanofiber membrane provided by the invention is multipurpose and can be applied to the fields such as biomedicines, energy and chemical industry, gas and liquid filtration, waterproofness and windproofness, windproofness and heat insulation, moisture permeability and ventilation, environmental management and semiconductor sensors. According to the electrostatic spinning nanofiber membrane provided by the invention, electrostatic spinning is respectively carried out on the high-melting-point polymer and the low-melting-point polymer, and the high-melting-point polymer fiber membrane and the low-melting-point polymer fiber membrane obtained are composited and hot-pressed to obtain the electrostatic spinning nanofiber membrane. The preparation method provided by the invention is high in production efficiency and low in energy consumption, and is suitable for industrial production.

A method for preparing polybenzimidazole or polybenzimidazole blend membranes and fabricating gas diffusion electrodes and membrane-electrode assemblies is provided for a high temperature polymer electrolyte membrane fuel cell. Blend polymer electrolyte membranes based on PBI and various thermoplastc polymers for high temperature polymer electrolyte fuel cells have also been developed. Miscible blends are used for solution casting of polymer membranes (solid electrolytes). High conductivity and enhanced mechanical strength were obtained for the blend polymer solid electrolytes. With the thermally resistant polymer, e.g., polybenzimidazole or a mixture of polybenzimidazole and other thermoplastics as binder, the carbon-supported noble metal catalyst is tape-cast onto a hydrophobic supporting substrate. When doped with an acid mixture, electrodes are assembled with an acid doped solid electrolyte membrane by hot-press. The fuel cell can operate at temperatures up to at least 200° C. with hydrogen-rich fuel containing high ratios of carbon monoxide such as 3 vol % carbon monoxide or more, compared to the carbon monoxide tolerance of 10-20 ppm level for Nafion®-based polymer electrolyte fuel cells.

With respect to a substrate including a first film, on a surface of which a pad is formed, a second film made of thermoplastic resin is a thermal compression bonded to a pad formation surface of the substrate. A stud bump formed on a semiconductor chip is stuffed into the second film while melting the second film and is pressure welded to the pad by application of pressure and heat. The melted second film seals between the semiconductor chip and the substrate. Then, multiple resin films are stacked with the substrate and the second film to form a stacked body. In a pressurizing and heating process, the multiple resin films, the substrate and the second film are integrated at one time so that the stud bump is bonded to the pad.

A thermal compression system adapted to encompass a knee or any other portion of a limb is disclosed. The thermal compression system includes a container that has a fluid output line and a fluid input line. A fluid pump is connected with the fluid output line of the container and a fluid input of a cuff. The cuff is designed to be attached to an area of the body being treated. The pump fills the cuff with fluid and the fluid may exit the cuff through a fluid output of the cuff that is connected with the fluid input line of the container.

A catalytic conversion process using a fluidized conversion zone, which requires a minimum superficial gas velocity to function properly, and a motor-driven, capacity-limited product compressor zone is started up using a thermal compressor by establishing two start-up gas recirculation circuits, one using the product compression zone running at high pressure to recirculate about 40 to 60 vol-% of the effluent gas stream from the conversion zone and the other running at low pressure and carrying the remaining portion of the effluent gas stream from the fluidized conversion zone where the high pressure circuit supplies motive gas to the thermal compression zone and the low pressure circuit supplies suction gas to the thermal compressor and the resulting compressed discharge gas enables the catalytic process to start up without the use of a dedicated motor-driven start-up compressor.

Oxide-oxide fusion bonding of wafers that includes performing a van der Waals force bonding process with a chuck having at least a flat central zone and an outer annular zone lower than the central zone, an edge portion of a mounted wafer is biased towards the outer annular zone. The van der Waals bonding wave is disrupted at the outer annular zone, causing an edge gap. A thermocompression bonding process is performed that includes heating the bonded wafers to a temperature sufficient to initiate condensation of silanol groups between the bonding surfaces, reducing the atmospheric pressure to cause degassing from between the wafers, applying a compression force to the wafers with flat chucks so as to substantially eliminate the edge gap, and performing a permanent anneal bonding process.

A method of treating meibomian gland dysfunction. Heat is applied to the outside of the eyelid to provide conductive heat transfer to the meibomian glands. The application of heat assists in the expression of obstructions or occlusions in the meibomian glands to restore sufficient sebum flow to the lipid layer to treat dry eye. A force may also be applied to the outside of the patient's eyelid to improve conductive heat transfer and reduce blood flow in the eyelid that causes convective heat loss. Thus, the application of force can further increase the temperature level and/or reduce the time to reach desired temperature levels for removing obstructions or occlusions. Reaching increased temperature levels may improve the melting, loosening, or softening of obstructions or occlusions in the meibomian glands while reducing the amount of time to reach desired temperature levels and/or aid in reducing discomfort to the patient during treatment.

A combined heating, cooling, and compression therapy system is provided. The system is configured for automated use with a controller. The system can have a core with separate channels for providing cold and heat and compression therapy; a cover for receiving the core; and a skin sensitive temperature node attached to the core cover.

The invention discloses a building template reinforced by composite of a continuous fiber plastic coated belt material, which has the advantages of favorable mechanical property and complete waterproof and dampproof properties and can be recycled more than a hundred of times. In the composite reinforced building template of the continuous fiber plastic-coated belt materials, a wooden oriented structural board is used as a core layer, a macromolecular adhesive membrane and 2-4 layers of continuous fiber plastic-coated belt materials are outwards sequentially and flatly paved and fixed on the two sides of the wooden oriented structural board symmetrically to form multilayer-combined composite reinforced building template of the continuous fiber plastic-coated belt materials, with a sandwich structure, wherein surface resin on one face of the macromolecular adhesive membrane is polypropylene resin, the surface resin on the other face of the macromolecular adhesive membrane is maleic anhydride modified polypropylene resin, a macromolecular adhesive membrane face with the surface resin of the maleic anhydride modified polypropylene resin is laminated with the wooden oriented structural board as the core layer, and a macromolecular adhesive membrane face with the surface resin of the polypropylene resin is adhered to a thermoplastic resin plastic-coated layer of the continuous fiber plastic-coated belt materials through thermal compression; and the continuous fiber plastic-coated belt materials are manufactured by coating thermoplastic resin on continuous fiber warp-knitted unidirectional cloth, and the fiber content of the continuous fiber plastic-coated belt materials is 20-60%.

A method of manufacturing a LIGA mold by backside exposure includes the steps of: disposing a mask layer at a side of a first substrate, wherein the first substrate is transparent to a predetermined light source and has a front side and a backside; forming a photoresist layer on the front side of the first substrate; providing the predetermined light source to illuminate the backside of the first substrate so as to expose the photoresist layer to form an exposed portion and an unexposed portion; removing the unexposed portion to form a patterned structure on the photoresist layer; forming a metal layer on the patterned structure of the photoresist layer and the first substrate; and removing the photoresist layer and the first substrate to remain the metal layer as the LIGA mold, which is good in a de-molding procedure of a hot embossing process.

A modular and field adaptable body armor system includes a plurality of flexible, air-permeable, thermally vented plates arranged in fixed relationships that pro-vide flexible, modular, field-adaptable protection for the torso and extremities without excessive weight or heat bur-den. The TVA plates include protective cards suspended in a parallel, louvered relationship between inner and outer mesh layers, thereby permitting air to flow therebetween while providing a flexible, compressible, modular barrier that protects the torso and extremities against projectiles. In embodiments, the outer mesh layer resists penetration and compresses cards together to intercept a projectile that would otherwise pass therebetween. Protective cards can include thermally pressed and flexed laminated UHMWPE. TVA panels can be removed and exchanged in the field according to the requirements of each mission. In embodiments, the TVA plates are laced together and/or attached to an underlying fabric carrier garment.

An RFID device interposer has folded ends that bring conductive lead end portions of conductive leads of the interposer to an underside of the interposer. The central conductive lead portions of the conductive leads remain on an upper surface of a dielectric substrate of the interposer. The folded ends of the interposer may be held together with an adhesive, or with thermal compression bonding. The interposer may also have an additional conductive material layer on an underside of the dielectric substrate. The conductive material layer may be capacitively coupled to the conductive leads of the interposer. The interposer may be tuned by varying the pressure used to secure the folded ends. This may be used to provide a better impedance match between a chip of the interposer, and the conductive leads and an antenna to which the interposer is coupled.

The invention discloses a clamping-piece-type microfluidic device and a manufacturing method. The clamping-piece-type microfluidic device comprises a cover plate, sealing gaskets, a microfluidic chip assembly and a bottom plate; a sample inlet and a cover plate sealing gasket groove are formed in the cover plate; the microfluidic chip assembly is composed of a laminating film and a microfluidic chip with a microfluidic channel, and a liquid inlet hole, a liquid outlet hole and a positioning hole are formed in the microfluidic chip assembly; the bottom plate is provided with a sample outlet, a bottom plate sealing gasket groove and a positioning column; the sealing gaskets are arranged in the sealing gasket grooves formed in the cover plate and the bottom plate. The manufacturing method comprises an injection molding process method of the cover plate and the bottom plate, a laser direct writing method of the microfluidic chip, a laminating and bonding method of the microfluidic chip assembly and a hot-press assembly method of the microfluidic device. The clamping-piece-type microfluidic device is simple in structure and manufacturing method, low in cost, high in finished product rate and suitable for both one-piece making for laboratory scientific research and commercial mass production.

The invention discloses a manufacture method of an automobile brake pad, comprising the following steps of: mixing, and filling a friction material into pores of a porous metal material by a vacuum filling method, so that a friction material blank can be formed; injecting, and adding the friction material blank into an injector to inject into a compacting mould, wherein the injector is a screw rod-rotatable injector; compacting the friction material blank in the mould to prepare a friction block blank, wherein in the process of compacting, keeping the hot-press temperature at 148-152DEG C, the hot-press pressure at 23MPa, and keeping the pressure for 5 minutes; cutting the prepared friction block blank into a brake pad friction block according to the required size, and putting the friction block and the steel back in the mould to be compacted and shaped into a brake pad blank; and thermally treating the brake pad blank to prepare the brake pad, wherein the thermal treatment temperature of the thermal treatment technology is 160DEG C, and the thermal treatment time is 2 hours, and cooling along with a furnace.. The manufacture method has the benefit effects that the abrasive resistance and shock resistance of the automobile brake pad can be improved.

A metal coating is formed on the inside face of a first thermostructural composite material part presenting indentations forming channels, and also on the inside face of a second thermostructural composite material part for being applied against the inside face of the first part, and the first and second parts are assembled together by bonding said inside faces together by hot compression, in particular by hot isostatic pressing, thereby obtaining a thermostructural composite material cooling panel having integrated fluid flow channels. The invention is applicable to making heat exchanger walls such as the walls of combustion chambers in aircraft engines, or the diverging portions of rocket engines, or plasma confinement chambers in nuclear fusion reactors.

A flow-guiding member unit used for assembling a flow-guiding member comprising pluralities of vanes, an outer platform and an inner platform, the unit comprising an integral body member comprising one vane portion, an outer platform portion, and an inner platform portion, a first elastic member attached to a step of the outer platform portion, and a second elastic member attached to a step of the inner platform portion, the body member being formed by the thermal compression of sheet-molding compounds or fiber-reinforced resin pellets, and the first and second elastic members being made of a thermoplastic elastomer.