140 results about "Hot embossing" patented technology

Various techniques for the fabrication of highly accurate master molds with precisely defined microstructures for use in plastic replication using injection molding, hot embossing, or casting techniques are disclosed herein. Three different fabrication processes used for master mold fabrication are disclosed wherein one of the processes is a combination of the other two processes. In an embodiment of the first process, a two-step electroplating approach is used wherein one of the metals forms the microstructures and the second metal is used as a sacrificial support layer. Following electroplating, the exact height of the microstructures is defined using a chemical mechanical polishing process. In an embodiment of the second process, a modified electroforming process is used for master mold fabrication. The specific modifications include the use of Nickel-Iron (80:20) as a structural component of the master mold, and the use of a higher saccharin concentration in the electroplating bath to reduce tensile stress during plating and electroforming on the top as well as sides of the dummy substrate to prevent peel off of the electroform. The electroforming process is also well suited towards the fabrication of microstructures with non-rectangular cross sectional profiles. Also disclosed is an embodiment of a simple fabrication process using direct deposition of a curable liquid molding material combined with the electroforming process. Finally, an embodiment of a third fabrication process combines the meritorious features of the first two approaches and is used to fabricate a master mold using a combination of the two-step electroplating plus chemical mechanical polishing approach and the electroforming approach to fabricate highly accurate master molds with precisely defined microstructures. The microstructures are an integral part of the master mold and hence the master mold is more robust and well suited for high volume production of plastic MEMS devices through replication techniques such as injection molding.

A light guide plate for a surface light-emitting device and a method of manufacturing the same are disclosed wherein the light guide plate is constructed in the form of an optical waveguide including an upper cladding film, core films formed with V-cut grooves, and a lower cladding film, so that since the upper and lower cladding films with a relatively low refractive index are respectively located on upper and lower surfaces of the core films, external foreign substances cannot penetrate into the core films, and the core films are not brought into contact with other components, whereby optical transmission properties are not changed and brightness can be also enhanced, and since the V-cut grooves are formed or both the V-cut grooves and optical waveguides are formed at the same time by means of a simple hot embossing process, the manufacturing costs can be saved.

The present invention provides a nonwoven fabric for cylindrical bag filter, wherein a long-fiber nonwoven fabric made of a synthetic fiber is used and the long-fiber nonwoven fabric is a long-fiber nonwoven fabric which is made of a thermoplastic continuous filament and is partially thermocompression-bonded. It is preferable that the circular arc flexural rigidity per basis weight is 0.050 to 1.000 ((cN/2 cm)/(g/m2)) and the air permeation rate per basis weight is 0.010 to 0.500 ((cc/cm2/sec)/(g/m2)). Further, there is provided a method for producing a nonwoven fabric for cylindrical bag filter including the steps of: melt-extruding a thermoplastic polymer through a spinneret; sucking and drawing the extrudate with an air sucker to form a thermoplastic continuous filament; allowing the filament to be subjected to electrification opening and to be piled on a moving collection surface to form a fiber web; and allowing the fiber web to be subjected to pressure welding treatment with a flat roll and partially thermocompression-bonding the fiber web with hot embossing rolls to form a long-fiber nonwoven fabric.

The invention discloses a manufacturing method of a carbon fiber shell. The manufacturing method of the carbon fiber shell comprises the following steps of: preprocessing: weaving carbon fiber tows into a certain structure, and then pre-dipping the weaved carbon fiber materials in resin; hot embossing and curing: carrying out the operations of hot embossing and curing to the carbon fiber materials pre-dipped in resin on a hot embossing machine, obtaining carbon fiber sheets, and then cooling and demolding; processing: processing the carbon fiber sheets into a required structure on a CNC (computer numerical control) machine; in-mold injection molding: spraying hot melt adhesive on the carbon fiber sheets, drying and then putting the processed carbon fiber sheets into an injection mold of the injection molding machine to be molded into products; and surface processing: oiling, polishing and printing the surface of products, and the like. In the manufacturing method, the hot melt adhesive is melted at the high temperature of the plastic materials when in injection molding, thus the plastic materials and the carbon fiber sheets are bonded together, and the carbon fiber sheets cannot drop off easily.

A preparation method of carbon/carbon-silicon carbide composite brake shoes and pads, the present invention produces C/C-SiC composite brake shoes and pads by several processes of mixing material, granulating, low-temperature hot embossing, high-temperature sintering, resin-impregnated solidifying, carbonizing, and buffing friction surface. The present invention, taking short carbon fiber as reinforced phase, can greatly reducing the cost comparing to those taking carbon fiber integer felt as reinforced phase; moreover, the content of various components can be effectively controlled by taking hot embossing; Adding SiC powder into raw material previously, can effectively increase the friction coefficient of brake shoes and pads, can achieve net-shape forming, can obviously reduce processing strength; Processing the mixture into irregular-appearance particles, and low-temperature hot embossing then, can effectively solve the bubbling and cracking problems of hot-embossed green body in sequent processes and decrease reject ratio.

Polymer micro embossing is a shaping method for forming micro-nano-structured patterns on polymer substrate materials by hot embossing. Polymer micro embossing method is widely applied in the manufacturing of various polymer micro-nano structures. The experiment apparatus mainly comprises: a polymer substrate extruder, a substrate pressing and thickness adjusting apparatus, a temperature controlling apparatus, an embossing apparatus, a pressure controlling apparatus, a pressure maintaining cooling apparatus, and a pulling apparatus. The pressing and thickness adjusting apparatus is used for flattening the extruded polymer; the temperature controlling apparatus is used for ensuring the surface temperature of the polymer substrate requiring flattening; the embossing apparatus is provided with embossing molds with micro embossing structures, wherein the micro embossing structures are transferred with applied pressures; the pressure controlling apparatus is used for adjusting the pressures applied to the polymer substrate; and the pressure maintaining cooling apparatus is used for cooling and shaping the micro structures. With the shaping method, a large amount of time and energy required by heating and cooling can be saved, the embossing equipment can be greatly simplified, the production efficiency is high, the operation is simple, and the cost is low.

An apparatus for hot embossing lithography includes a press mold (20), a substrate (10), a first heating device (40), a second heating device (40′), and a vacuum chamber (32). The press mold has a main body (21) and a number of relief structures (22) extending therefrom. The substrate (10′) is configured for holding a polymer thin film (30) to be pressed. The first heating device (40) is adapted for heating the press mold, while the second heating device (40′) is adapted for heating the polymer thin film on the substrate. The vacuum chamber (32) has an opening (33) through which a vapor (34) can be introduced into the chamber, in order to lower a surface energy of the press mold. The press mold and the substrate are accommodated in the vacuum chamber, and the press mold is aligned with the polymer thin film on the substrate.

A method of manufacture of forming a composite carbon fiber bicycle crank includes providing a hollow carbon fiber body, with the body including a first opening at one end and the second opening at the other end, mounting a first connecting member and a second connecting member in the first opening and the second opening of the body respectively, wrapping carbon fiber yarn made up of carbon yarn around the assembly of the body and the first and second connecting members, wrapping carbon fiber polymer, and performing hot embossing.

This invention relates to a method for manufacturing a composite lens, comprising the steps of: forming a base-lens-forming material into a base lens; and forming a plastic material into a first plastic lens portion on a first lens surface of the base lens using a stamper by a hot embossing process, wherein a glass transition temperature of the plastic material is lower than that of the base-lens-forming material.

The present invention relates to an organic solar cell made of a transparent conductive polymer electrode and a fabricating method thereof. An anode electrode is formed on a substrate, a photoactive layer is formed on the anode electrode, and a cathode electrode is then formed on the photoactive layer. The anode electrode is formed by stacking conductive polymer particles by an electrostatic spray printing method, and a micro pattern is formed on the substrate before forming the anode electrode. The micro pattern is formed by hot embossing, the photoactive layer is formed by gravure printing or spin coating, and the cathode electrode is formed by screen print or evaporation deposition. A series of processes for fabricating an organic solar cell is performed using a roll-to-roll process.

The invention relates to an arc solar panel which comprises a plastic substrate and a plurality of solar silicon crystal boards regularly arranged on the plastic substrate. The solar silicon crystal boards are used for photovoltaic power generation. The arc solar panel is characterized in that polyester resin layers with light transmittance performance are attached to the upper surfaces of the solar silicon crystal boards; and the lower surface of the plastic substrate is of the same curved surface shape with the outer surface of an automobile top plate. A processing technology of the arc solar panel, which is disclosed by the invention, comprises the following steps of: c, adhering the solar silicon crystal boards; d, arranging the polyester resin layers; 3, loading a die; f, filling a heating medium; g, carrying out hot embossing; and h, carrying out cooling sizing. According to the arc solar panel disclosed by the invention, the firmness of the integral arc solar panel is effectively ensured and the capacity of receiving the sunlight is ensured. The technology for manufacturing the arc solar panel, which is disclosed by the invention, has simple and reasonable steps and can be used for effectively ensuring the quality of the manufactured arc solar panel.

A structure of an electromagnetic shield layer for a plasma display panel and a method for manufacturing the same. The manufacturing method of the electromagnetic shield layer uses integrated technologies of hot embossing, coating, and electroplating. The structure according to the present invention is a metal layer with an electromagnetic-wave shielding effect and is built in a plastic material. The aspect ratios of the geometric patterns on the metal layer are above 75%.

A method for the production of a film for tear-open packagings having a weakening line. A film web having at least one film layer of a thermoplastic plastic is passed to a hot-embossing device, in which the film web is provided with a line-shaped embossing. The film web is then passed to a laser beam device, in which the film web is provided with a line-shaped laser seam. The embossing and the laser seam cover each other and jointly form the weakening line.

The invention relates to a process for forming an optical element. A forming tool is used having a plurality of molding or hot-embossing portions formed on a surface thereof for molding or hot-embossing optical structures onto a substrate. On the surface of the substrate there is formed at least one preformed portion. The substrate is heated to a temperature above a transition temperature and the forming tool and the substrate are pressed against each other for forming an optical element having a plurality of structures having an optical effect, wherein the shape of the structures having an optical effect is given by the respective associated molding or hot-embossing portion. According to the invention, when the forming tool and the substrate are pressed against each other, the respective preformed portion of the substrate first of all gets into contact to the associated molding or hot-embossing portion or to the forming tool at a central area so that a nip, which is formed between a surface of the respective preformed portion and a surface of the associated molding or hot-embossing portion or of said forming tool extends and broadens from said central area towards an edge of the respective preformed portion or of said substrate. According to the invention the substrate and said forming tool are provided with a substantially identical base so that the deformation ratio of the substrate is advantageously low.

Described is a transfer film, in particular a hot embossing film, which includes a carrier film and a transfer layer portion having a structure layer, the transfer layer portion being arranged on the carrier film and being detachable from the carrier film, wherein it is provided that the carrier film has a master relief structure on its side towards the structure layer and the structure layer on its side towards the carrier film has a relief structure complementary to the master relief structure of the carrier film. There is further provided a process for the production of the transfer film and a multi-layer body formed with the structure layer.

Dielectric materials comprising release agents are described. Also described are a process for improving the processability of dielectric materials during hot embossing, substrates prepared by hot embossing, and integrated-circuit packages comprising the improved substrate.

A method for manufacturing a light guide plate includes the steps of: providing a hot embossing machine having a pressing head and a working table; providing and fixing a stamper to the pressing head, the stamper having microstructures in a surface thereof facing the working table; disposing a substrate on the working table; heating the substrate; and pressing the stamper onto the substrate to form light manipulating microstructures at a surface of the substrate. In this process, the substrate is heated to a state just short of fusing. Therefore the pressure applied by the stamper need not be very large. This allows greater control of the precision of stamping by the stamper. The method is particularly efficacious for fabricating large sized light guide plates, such as those used in LCD TVs and the like.

The present invention is directed towards contact planarization methods that can be used to planarize substrate surfaces having a wide range of topographic feature densities for lithography applications. These processes use thermally curable, photo-curable, or thermoplastic materials to provide globally planarized surfaces over topographic substrate surfaces for lithography applications. Additional coating(s) with global planarity and uniform thickness can be obtained on the planarized surfaces. These inventive methods can be utilized with single-layer, bilayer, or multi-layer processing involving bottom anti-reflective coatings, photoresists, hardmasks, and other organic and inorganic polymers in an appropriate coating sequence as required by the particular application. More specifically, this invention produces globally planar surfaces for use in dual damascene and bilayer processes with greatly improved photolithography process latitude. The invention further provides globally planar surfaces to transfer patterns using imprint lithography, nano-imprint lithography, hot-embossing lithography and stamping pattern transfer techniques.

A method for manufacturing a light guide plate (70) includes: providing a first substrate (30); coating a photo-resist (600) on the first substrate; exposing the photo-resist using a photo mask; developing the photo-resist; anisotropically dry etching the first substrate; removing remaining photo-resist (640), thereby providing a mold (40); providing a second substrate (50) and a hot-embossing machine (80), and conducting hot-embossing of the second substrate using the mold and the hot-embossing machine, thereby providing the light guide plate. By using the above-described dry etching and hot-embossing methods, a pattern of the photo mask is precisely transferred to the first substrate and the light guide plate. A diameter of the each of micro-dots formed on the light guide plate is as little as 10 nanometers. Thus a uniformity of luminance and color provided by the entire light guide plate is improved.

The invention discloses a super-strength zinc aluminum magnesium coated steel sheet for high-temperature shaping and a manufacture method thereof. The steel sheet comprises the following chemical components in percent by weight: 0.2 to 0.8 percent of C, 0.08 to 0.6 percent of Si, 1.5 to 5.0 percent of Mn, smaller than or equal to 0.08 percent of Al, smaller than or equal to 0.005 percent of N, and the balance of Fe and inevitable impurities. The steel sheet has the advantages that a plating layer is continuous and complete after being subjected to high-temperature heating and punch forming on the premise that the tensile strength is greater than or equal to 1700 MPa and the percentage elongation is greater than or equal to 5 percent after base plate hot embossing is met, and no cracks extending to a base body exists; the Zn content in plating alloy phase is not greater than 30 percent as a whole, and the corrosion resistance property of the plating layer is excellent; and the steel sheet can meet the requirement on light weight of anticorrosion high-strength automobile sheets.

The invention provides a preparation method for a high temperature-resistant automobile brake lining. Eutectic salt/magnesia-alumina spinel phase-change materials are prepared by high-temperature sintering, and are mixed with organic binder, reinforcements, friction performance regulators and other fillers to prepare friction materials, the organic binder is phenolic resin, the reinforcements are inorganic fibers and cellulose fibers, the friction performance regulators are graphite, molybdenum disulfide and alumina, and the fillers are pulverized coal, wollastonite powder and barite. The preparation process flow is as follows: material preprocessing, batching, mixing, prepressing, hot embossing, heat treatment, machining and finished product. The high temperature-resistant automobile brake lining has the advantages of stable friction coefficient, good heat fading resistance and low wear rate, and moreover, the materials are cheap, so that the production cost can be greatly reduced.