2027 results about "Metal foil" patented technology

A semiconductor device with a metal foil and a sealing resin material. Metal foil is formed integrally with the sealing resin layer.

The invention discloses a refined disassembly system and method for a battery monomer, and belongs to the technical field of battery disassembly. The production line comprises a perforating device, a cutting device, a cutting device, a scattering device, a sorting device, a color sorting device, a defluorination device and a powder removal device. The method comprises the following steps: perforating a battery to discharge electrolyte, separating a shell from an inner core by a cutting device, cutting the inner core by a cutting device, scattering by a scattering device, sorting a diaphragm by a sorting device, sorting positive and negative electrode materials by a color sorting device, and respectively removing fluorine by a defluorination device. And finally, the metal foil and the powder are separated through the powder removing device, the damage degree of the crystal structure of the black powder can be reduced, the black powder and the metal fragments are efficiently separated according to the density difference, the metal foil and the black powder are not likely to be excessively mixed, the separation purity is high, the secondary treatment situation is reduced, efficient separation and recycling of the electrode material are achieved, and the production cost is reduced. And the comprehensive function and the resource utilization rate of the system are obviously improved.

The invention relates to the technical field of electronic information materials, in particular to a metal foil with a carrier, a metal-clad laminated board and a circuit board. The invention discloses a metal foil with a carrier, a metal-clad laminated board and a circuit board, the metal foil with the carrier is characterized in that the metal foil with the carrier comprises a carrier layer and a functional layer, the functional layer is arranged on one side face of the carrier layer, and the functional layer is arranged on the other side face of the carrier layer. And the ratio of the thermal expansion coefficient a of the functional layer to the thermal expansion coefficient b of the carrier layer satisfies 40% < = a / b < = 120%. The thermal expansion coefficient ratio of the carrier layer to the functional layer of the metal foil with the carrier is in a proper range, so that the stripping stability of the metal foil with the carrier during use can be improved, and the processing efficiency is improved.

The invention relates to the technical field of circuit substrate manufacturing, and particularly discloses a preparation method of a composite solder sheet and an AMB ceramic copper-clad plate. The composite solder sheet is composed of an active metal foil and a copper-containing layer modified on the surface of the active metal foil, and the preparation method of the copper-clad plate comprises the following steps: after the surface of the active metal foil is pretreated, the copper-containing layer is deposited to prepare the composite solder sheet, and the composite solder sheet is placed between a copper substrate and a ceramic sheet to be pressed and assembled. And performing vacuum brazing on the assembly to complete the preparation of the ceramic copper-clad plate. A composite solder sheet containing active metal is adopted, high-temperature element diffusion during vacuum brazing is utilized at the diffusion temperature to achieve alloying of a composite solder layer, and then heat preservation is conducted at the brazing temperature to achieve uniform melting of solder and wetting metallurgical reaction between the solder and copper and between the solder and a ceramic substrate. By means of the preparation method, low-cost and high-reliability preparation of the AMB ceramic copper-clad plate can be achieved, and the prepared AMB ceramic copper-clad plate also has high peel strength and lower weld porosity.

The invention provides an elastic current collector and a preparation method and application thereof. The elastic current collector comprises a metal foil and an elastic carbon interface layer arranged on at least one side surface of the metal foil, and the elastic carbon interface layer comprises an elastic carbon material, a conductive additive and a binder; the elastic carbon material comprises hollow carbon and / or biomass-based porous carbon, and the surface and the interior of the biomass-based porous carbon are both provided with pore structures. According to the invention, hollow carbon and / or biomass-based porous carbon are / is used as an elastic carbon material, mixed with the conductive additive and the binder, and then coated on the surface of at least one side of the metal foil to form the elastic carbon interface layer, so that the surface roughness of the current collector is increased and the interface stress is dynamically reduced without influencing the electrochemical performance of the electrode; therefore, the electrochemical stability of the electrode is effectively improved, and the preparation method is simple and suitable for large-scale application.

The invention provides an ultrathin VC vapor chamber which comprises a VC lower cover and a VC upper cover arranged on the VC lower cover, the VC upper cover is arranged in a zigzag mode, and a plurality of steam cavities arranged at intervals are arranged between the VC upper cover and the VC lower cover which are arranged in a zigzag mode, the ultrathin VC vapor chamber is characterized in that a metal foil capillary structure is arranged between the VC upper cover and the VC lower cover, and the lower portion of the metal foil capillary structure is attached to the VC lower cover. The upper portion of the metal foil capillary structure is attached to a part of the VC upper cover, the metal foil capillary structure comprises a metal foil and evaporation backflow holes which penetrate through the metal foil and are distributed in the metal foil in an array mode, the metal foil is provided with a hollowed-out supporting structure, and the hollowed-out supporting structure and the evaporation backflow holes are arranged in a staggered mode. Compared with a traditional copper net, the metal foil capillary structure facilitates development of ultrathin VC, the metal foil capillary structure has better capillary force, the VC can achieve higher heat dissipation power, and meanwhile the metal foil capillary structure is lower in cost compared with the traditional copper net.

The invention belongs to the technical field of multifunctional radomes, and particularly relates to a frequency-agile absorption and transmission integrated electromagnetic metasurface and radome, the frequency-agile absorption and transmission integrated electromagnetic metasurface comprises a plurality of basic units in periodic array distribution, and each basic unit comprises a wave transmission layer and a wave absorption layer which are oppositely arranged; the wave-transparent layer comprises a wave-transparent dielectric substrate, a wave-transparent metal foil layer I and a wave-transparent metal foil layer II, wherein the wave-transparent metal foil layer I and the wave-transparent metal foil layer II are arranged on the two sides of the wave-transparent dielectric substrate. The wave-transparent metal foil layer I comprises a plurality of metal spiral lines, the wave-transparent metal foil layer II comprises a metal foil, and the metal foil is provided with an annular gap and rectangular gaps distributed around the annular gap; the wave-absorbing layer comprises a wave-absorbing dielectric substrate, and a wave-absorbing metal foil layer I and a wave-absorbing metal foil layer II which are arranged on two sides of the wave-absorbing dielectric substrate; according to the invention, the wave-transparent communication and wave-absorbing isolation functions are realized at the same time, the wave-absorbing frequency band agility function is realized, and the wave-absorbing effect is better.

A method (100) for manufacturing a punctured filter plate (20) for use in a beverage capsule (10), the method comprising: a) providing (110) a metal foil (30) having a thickness (To ) between 100 µm and 400 pm; b1) piercing (120) the metal foil to obtain a plurality of openings (24) each having a smallest dimension (Dhi ) between 300 µm and 1,5 mm and stamping (135; 140) at least an area around each opening to reduce the smallest dimension thereof to between 25 µm and 300 pm; and c) cutting (130; 145) the metal foil along a predetermined two-dimensional contour to obtain the punctured filter plate.

An electrode manufacturing device rolls and transfers a sheet-shaped electrode in which an active material layer is applied to at least any one of a metal foil with a first surface and a second surface which is a back surface of the first surface. At least any one of a rolling roll rolling the electrode and a travel roll rolling and then transferring the electrode comprises a base roll having a predetermined diameter, and having a base surface at an outer circumference thereof; and a step ring being coupled to the outer circumference of the base roll, and having a step surface a diameter of which is greater than a diameter of the base surface. The step ring is detachably coupled to the base roll. A thickness of a step differs from a thickness of the active material layer.

The invention discloses a preparation method of a high-temperature excitation coil based on an AMB process, and relates to the technical field of magnetic levitation, and the preparation method specifically comprises the following steps: S1, silicon nitride ceramic is perforated; s2, through hole filling and surface screen printing; s3, carrying out vacuum sintering on the metal foil and the silicon nitride ceramic; s4, performing coil patterning and surface treatment; s5, preparing a single-layer silicon nitride ceramic metal coil; s6, preparing a ceramic isolation sheet; s7, performing lamination and vacuum sintering; the magnet exciting coil prepared by the invention has relatively good reliability and long service life in a service environment of 550-600 DEG C.

To provide a thin film capacitor having a pair of terminal electrodes capable of being disposed on the same plane. A thin film capacitor 1 includes a metal foil having a non-roughened center portion and a roughened upper surface, a dielectric film covering the roughened upper surface of the metal foil, an electrode layer contacting the non-roughened center portion of the metal foil through an opening formed in the dielectric film, and an electrode layer contacting the dielectric film without contacting the metal foil. A thickness of the center portion of the metal foil at a position overlapping the electrode layer is larger than a thickness thereof at a position overlapping the electrode layer.

The invention relates to a metal foil surface defect visual detection device and a detection method thereof.The device comprises a supporting mechanism, an uncoiling mechanism, a driving mechanism and a detection mechanism, the coiled metal foil can be uncoiled and surface defects of the metal foil can be detected, the uncoiling mechanism is composed of a plurality of rotating roller bodies, a horizontal uncoiling section is formed, and the driving mechanism is driven by the driving mechanism; the detection mechanism comprises an RGB camera, an infrared camera, a laser scanning head or an ultrasonic detection head, is positioned on the upper side and the lower side of the uncoiling mechanism and is used for acquiring surface image data of the metal foil in real time; the method and the device can improve the detection precision and the detection efficiency of the surface defects of the metal foil, are suitable for quality control in automatic production, can provide reliable data support for subsequent defect analysis and repair, further provide an implementation scheme based on electronic equipment and computer programs, and are suitable for popularization and application. And the intelligent level of the detection process is further improved.

The present invention addresses the problem of providing a method and a punch for punching an amorphous metal foil with which a greater reaction force is prevented from acting on the punch in a short period of time, a great impact is prevented from being imparted to a press machine, and loud processing sound or great vibrations are prevented from being produced, during punching of an amorphous metal foil in press working.　The present invention provides a method for punching an amorphous metal foil that is punched into a prescribed shape by a press machine, the method including a step for placing the amorphous metal foil on a die, and a step for punching out, by using a punch, a portion of the amorphous metal foil placed on the die, the distal-end surface of the punch being an inclined surface that is inclined in one direction with respect to a plane orthogonal to the direction of movement of the punch. The present invention also provides a punch applied in punching of an amorphous metal foil that is punched into a prescribed shape by a press machine, the punch being configured such that the distal-end surface of the punch is an inclined surface inclined in one direction with respect to a plane orthogonal to the direction of movement of the punch.

An electrode assembly for a lithium-ion battery is provided. The electrode assembly may comprise a metal foil having thereon a conductive coating including a polymeric binder and a self-supporting electrode film of active material and fibrillated composite binder laminated with the metal foil such that the conductive coating is between the metal foil and self-supporting electrode film. The fibrillated composite binder may include carbon particles and a same polymeric binder.

To provide a thin film capacitor having a large capacitance. A thin film capacitor includes a metal foil having roughened main surfaces, a dielectric film covering the main surfaces, an electrode layer contacting the metal foil through an opening formed in the dielectric film and having a surface formed as a metal terminal, an electrode layer contacting the dielectric film without contacting the metal foil and having a surface formed as a metal terminal, and an electrode layer contacting the dielectric film without contacting the metal foil. The electrode layers include a conductive polymer layer contacting the dielectric film.

The invention provides a boron nitride-containing resin composition and application thereof. The boron nitride-containing resin composition comprises a combination of a resin material and modified boron nitride, the modified boron nitride is prepared by the following method which comprises the following steps: mixing boron nitride and a sintering aid, sintering and crushing to obtain the modified boron nitride, the sintering aid comprises any one or a combination of at least two of calcium oxide, magnesium oxide, silicon oxide, yttrium oxide, niobium oxide and potassium feldspar. Through the design of a modification method, the modified boron nitride has a high filling rate in a resin material, and the boron nitride-containing resin composition containing the modified boron nitride not only has high thermal conductivity, but also has high peel strength and excellent adhesive property, so that the metal foil-clad laminated board has excellent comprehensive effects in the aspects of high thermal conductivity and high reliability.

The utility model discloses a composite current collector, a pole piece and a battery. The composite current collector comprises a macromolecule layer and metal layers deposited on the two side faces of the macromolecule layer, and the two metal layers are connected at at least one end of the macromolecule layer so that the two metal layers can be conducted. The end face of the composite current collector is provided with the metal layer, and the metal layer is connected with the metal layers on the upper and lower surfaces of the polymer layer, so that the metal layers on the upper and lower surfaces of the current collector are electronically conducted. After the battery pole piece is prepared, a metal foil tab does not need to be subjected to transfer welding, and an external tab can be directly welded.

The invention relates to the technical field of miniaturized electronic devices, in particular to a composite metal foil, a circuit board and a mobile terminal. The invention provides a composite metal foil which comprises a base material layer and a metal layer which are sequentially arranged in a stacked mode, the side, opposite to the metal layer, of the base material layer can be stripped from a bearing film, and the binding force F1 between the metal layer and the base material layer and the stripping force F2 between the base material layer and the bearing film meet the condition that F1 / F2 is larger than or equal to 30. On one hand, the composite metal foil meeting the relational expression is easy to peel off from the bearing film, the composite metal foil can be prevented from wrinkling in the peeling process of the composite metal foil and the bearing film, on the other hand, the binding force between the base material layer and the metal layer in the composite metal foil is high, the metal layer and the base material layer are prevented from falling off, and the quality of the composite metal foil is improved.

The present invention discloses an automatic hot stamping processing device and process for cigarette case wrapping paper, relating to the technical field of hot stamping equipment. An automatic hot stamping processing device for cigarette case wrapping paper is included, which comprises a machine table frame and a hot stamping machine body. The hot stamping machine body is controlled to lift through an externally connected hydraulic cylinder. It further includes: an automatic hot stamping structure, which is arranged on the machine table frame and is used for automatically hot stamping the cigarette case wrapping paper; a positioning component, which is arranged on the automatic hot stamping structure and is used for preventing the cigarette case wrapping paper from moving after hot stamping. Among them, the automatic hot stamping structure includes a transport frame, which is arranged in the middle of the machine table frame. A conveyor belt is arranged inside the transport frame. A first winding machine and a second winding machine are arranged on one side of the machine table frame. A driving roller and a first round roller are rotatably connected to one side of the machine table frame. By separating the metal foil from the cigarette case wrapping paper when positioning the cigarette case wrapping paper, wrinkles on the cigarette case wrapping paper are avoided.

The invention provides a water-resistant carbon-coated current collector as well as a preparation method and application thereof, and relates to the technical field of batteries. Specifically, the method comprises the following steps: preparing a core-shell type composite binder; the core layer is obtained by polymerizing raw materials including a first monomer, a second monomer and a cross-linking monomer, and the shell layer is obtained by polymerizing raw materials including a third monomer, a fourth monomer and a functional monomer; preparing conductive slurry containing a conductive material and a dispersing agent, fully mixing the conductive slurry with the core-shell type composite binder, and adjusting the pH value to obtain pre-coating slurry; and coating the surface of a metal foil with the carbon-coated current collector, and carrying out heat treatment to obtain the carbon-coated current collector. The binder disclosed by the invention has high water resistance, can effectively prevent a carbon-coated coating from falling off when an active coating is coated, and improves the stripping force of the active coating, meanwhile, the core-shell structure of the binder prevents the surface of a conductive agent from being excessively wrapped, and specific functional groups form strong interface bonding, so that the carbon-coated coating and an interface are compounded more tightly, and the service life of the conductive agent is prolonged. And the coating resistance of the carbon coating layer and the diaphragm resistance of the coated pole piece can be effectively reduced.

The invention provides an epoxy resin composition, a prepreg, a laminated board and a metal foil-clad laminated board. The epoxy resin composition comprises the following components in parts by weight: A, 100 parts of epoxy resin; b, 120-390 parts of a curing agent; c, 50 to 200 parts of inorganic filler; the curing agent comprises B1 amino modified organosilicon polymer and B2 amine curing agent and / or phenolic curing agent, and the ratio of B1 to B2 is (1: 2)-(1: 7). The amino modified organic silicon and the amine and / or phenolic aldehyde curing agent are compounded to co-cure the epoxy resin, the overall crosslinking density is increased, and meanwhile, compounding of epoxy resin with different molecular weights is combined, so that the effect of increasing the heat resistance and toughness of a system is achieved. Meanwhile, an amino modified organosilicon polymer is introduced into an epoxy resin system, so that the soft degree of a curing molecular chain can be adjusted, the release of stress in the resin curing process is accelerated, and the effect of flatness of the surface of the prepreg and the plate is achieved.

The invention discloses a composite heat insulation coating structure and method for a high-temperature component of an unmanned aerial vehicle. The structure comprises a heat insulation base material layer made of a high silica glass fiber material and a reflecting layer made of metal foil, and the heat insulation base material layer and the reflecting layer are compounded into a whole. The reflecting layer is used for reflecting heat radiation, and the heat insulation base material layer is used for blocking heat conduction. The problems that a traditional ceramic fiber material is prone to embrittlement and short in service life in a high-temperature vibration environment are effectively solved through a double heat insulation mechanism of reflection-blocking. The coating structure has excellent heat-resistant cyclicity, good flexibility and process adaptability, can perfectly fit special-shaped structures such as a bulkhead and a tail cover of the unmanned aerial vehicle, and remarkably improves the reliability and prolongs the service life of a thermal management system of the unmanned aerial vehicle.

The invention discloses a vapor chamber and a manufacturing method thereof. The vapor chamber comprises an upper cover, a lower cover and a metal foil, the lower cover is connected with the upper cover, a containing cavity is formed between the lower cover and the upper cover, and a cooling medium is contained in the containing cavity; the metal foil is arranged in the containing cavity, a condensation cavity is formed between the metal foil and the upper cover, an evaporation cavity is formed between the metal foil and the lower cover, and a plurality of capillary holes are distributed in the metal foil and communicated with the condensation cavity and the evaporation cavity. According to the vapor chamber, the metal foil is arranged between the upper cover and the lower cover, backflow of a liquefied cold area medium in the condensation cavity into the evaporation cavity is achieved through the capillary holes formed in the metal foil, and the overall thickness of the whole vapor chamber can be set to be smaller due to the arrangement of the metal foil.

The invention belongs to the field of secondary battery manufacturing, and particularly relates to a composite foil current collector welding method.The composite current collector comprises an upper aluminum conducting layer, a middle high-molecular polymer layer and a lower aluminum conducting layer, and the welding method comprises the following steps that S1, micropore machining is carried out on a tab area of the composite current collector, forming a through micropore array; s2, laying a first pure metal foil on the upper surface of the tab area, and laying a second pure metal foil on the lower surface of the tab area; and S3, welding the tab area on which the pure metal foil is laid, so that the first pure metal foil, the upper aluminum conductive layer, the lower aluminum conductive layer and the second pure metal foil form through metallurgical bonding at the position of the micropore. According to the composite foil current collector welding method, ultrasonic energy is highly concentrated on a metal interface at the edge of a micropore, local metallurgical connection is achieved, overall heat input is low, hot melting and carbonization of a middle high-molecular polymer layer are effectively avoided, and an ultrathin metal layer is protected against heat damage.

Method for manufacturing an electrical storage device, comprising the following steps: Arranging a metal foil extending outwards from an electrode plate between a first metal element and a second metal element; and Causing an ultrasonic vibration to act on a plurality of points of action from the side of the first metal element in order to bond the metal foil to the first metal element and the second metal element, whereby the first metal element has a Vickers hardness of at least 40 Hv and not more than 75 Hv.

The invention discloses a double-sided circuit board and a manufacturing method thereof, and relates to the technical field of electronic circuit additive manufacturing. The manufacturing method comprises the following steps: preparing a laminated body; the laminated body comprises an insulating layer with a first surface and a second surface which are vertically opposite to each other, and a metal foil layer formed on the first surface of the insulating layer; a blind hole penetrating through the insulating layer and directly abutting against the metal foil layer is formed; forming a printed circuit pattern on the second surface of the insulating layer by using conductive slurry, and filling the blind hole to form a conductive column for realizing conductive interconnection between the printed circuit pattern and the metal foil layer; a plated circuit pattern is formed on the printed circuit pattern by electroplating, and an etched circuit pattern is formed by etching the metal foil layer. According to the method, the printing process and the etching process are combined, so that the production efficiency of the circuit board can be effectively improved, and the waste and pollution treatment cost is reduced.

The invention discloses a preparation method of a defective graphene negative electrode for a lithium battery, which comprises the following steps: grinding natural graphite into powder, carrying out graphite modification by irradiation of a high-current pulse electron beam, mixing with a conductive agent and a binder to prepare slurry, and coating the slurry on a metal foil to prepare the defective graphene negative electrode for the lithium battery. Natural graphite is modified through high-current pulse electron beam irradiation, obvious expansion deformation occurs on the surface of the natural graphite, defects are generated on a graphite structure, mutual stripping between graphite layers is achieved, the whole surface of the graphite is in a hairy wrinkle form, the structure is almost transparent, and the storage capacity and the cycling stability are obviously improved; the obtained defective graphene negative electrode material provides more channels for lithium ion diffusion, the ion diffusion path is effectively shortened by internal gaps, and a physical method is adopted, a specific reducing agent, an oxidizing agent or other intermediate media do not need to be used, and introduction of impurities is avoided.

To provide a thin film capacitor having high adhesion with respect to a circuit substrate. A thin film capacitor includes: a metal foil having a roughened upper surface; a dielectric film covering the upper surface of the metal foil and having an opening through which the metal foil is partly exposed; a first electrode layer contacting the metal foil through the opening; and a second electrode layer contacting the dielectric film without contacting the metal foil. An angle θa formed by the other main surface of the metal foil and a side surface thereof is more than 20° and less than 80°. The side surface is thus tapered at an angle of more than 20° and less than 80°, so that it is possible to suppress warpage and to enhance adhesion with respect to a multilayer substrate when the thin film capacitor is embedded in the multilayer substrate.

To provide a sheet for an adiabatic board capable of obtaining an adiabatic board with excellent designability and incombustibility, and a method for manufacturing a sheet for an adiabatic board.SOLUTION: A sheet 10 for an adiabatic board has a metal foil 1, a design layer 2, a protective layer 3, and a release film 4 in this order in a thickness direction. A method for manufacturing a sheet for an adiabatic board has: a transfer sheet preparation step of preparing a transfer sheet having a release film and a transfer layer arranged on one side of the release film, where the transfer layer has, from the release film side, a protective layer and a design layer in this order in a thickness direction; and a bonding step of opposing one surface of a metal foil to a surface of the transfer sheet on a design layer side and bonding the two together.SELECTED DRAWING: Figure 1

To provide a thin film capacitor in which warpage is less likely to occur. A thin film capacitor includes: a metal foil having roughened upper and lower surfaces; a dielectric film covering the upper surface of the metal foil and having an opening through which the metal foil is partly exposed; a dielectric film covering the lower surface of the metal foil and made of a dielectric material having a thermal expansion coefficient smaller than that of the metal foil; a first electrode layer contacting the metal foil through the opening; and a second electrode layer contacting the first dielectric film without contacting the metal foil. The lower surface of the metal foil is thus covered with the dielectric film having a small thermal expansion coefficient, thereby making it possible to prevent the occurrence of warpage.