90results about How to "Avoid Cosmetic Defects" patented technology

The invention belongs to the technical field of an adhesive and adhesive tape for lithium ion batteries and discloses a polyacrylate solvent-type acid-base-resistant pressure-sensitive adhesive tape and a preparation method and application thereof. The preparation method comprises mixing a hard monomer, a soft monomer and a functional monomer, adding a chain transfer agent and a solvent into the mixture, adding an initiator to cause a reaction, adding a curing agent and color paste into the reaction product, and carrying out coating and drying to obtain the polyacrylate solvent-type acid-base-resistant pressure-sensitive adhesive. The mass ratio of the hard monomer, the soft monomer to the functional monomer is (80 to 95): (1 to 15): (2 to 5). The pressure-sensitive adhesive can resist acid and alkali corrosion and is particularly resistant to corrosion of weakly acidic lithium ion battery electrolytes. The pressure-sensitive adhesive and tape have excellent high-temperature and electrolyte resistance, can meet the performance requirements of large power lithium-ion battery tapes and have high cost performance.

The invention provides a polypropylene resin composite. The composite comprises the following components in part by weight: 30 to 80 parts of polypropylene, 10 to 40 parts of packing, 5 to 20 parts of toughening agent, 0.2 to 1.5 parts of heat stabilizer, 0.01 to 3 parts of appearance improver and 0.2 to 2 parts of lubricant, wherein the appearance improver is an acrylate-carboxyl-containing olefin-propylene terpolymer or an epoxy aliphatic polymer. The appearance improver used in the invention is an aliphatic polymer with polar groups such as an acrylic resin group, a carboxyl, an epoxy group or the like, wherein the polymer per se has high compatibility with the components such as the polypropylene, the toughening agent and the like, while the polar groups have the high compatibility with the components such as the packing, the lubricant and the like; under the effect of the appearance improver, the fluidity and the flow direction of the non-polar substances such as the polypropylene, the toughening agent and the like and the polar substances such as the packing, the lubricant and the like tend to be consistent so as to avoid appearance defects such as a fiddle back figure, a rill mark or the like.

The invention relates to a manufacturing method of an aluminum alloy electrophoresis wood grain profile, comprising the following multiple steps of: degreasing the conventional aluminium alloy base materials; washing; carrying out acid etch; washing; carrying out alkali etch; washing; neutralizing; washing; carrying out anodic oxidation; washing; washing by using pure water; carrying out electrolytic coloring; washing; washing by using the pure water; washing by using hot water; carrying out electrophoresis; washing; washing; dripping for drying; curing; and carrying out transfer printing on wood grains. The manufacturing method of the aluminum alloy electrophoresis wood grain profile is characterized in that the curing temperature of electrophoretic paint is 190-200 DEG C, and the curing time is 24-26 minutes; the transfer printing temperature is 185-190 DEG C, and the transfer printing time is 23-23.5 minutes, thus an aluminum alloy electrophoresis wood grain profile product is obtained. The aluminum alloy electrophoresis wood grain profile product has uniform coating, high adhesive force and good coverage, thereby preventing the appearance defects caused by the bottom leakage of a powder coating; and in addition, the invention has the advantages of high glossiness, brilliant and beautiful color, wonderful feeling of color change and diversity, high corrosion resistant capacity, good weather resistance and difficulty of chalking or fading.

The invention discloses a rubber additive pre-dispersion which is high in compatibility with different kinds of rubber and of which the residual components do not influence the performance of rubber products and a simple method for preparing the rubber additive pre-dispersion conveniently. In addition, the invention also provides a method for preparing rubber additives containing the rubber additive pre-dispersion. The rubber additive pre-dispersion can be suitable for different rubber additives and is high in compatibility with different rubber products; components of the rubber additive pre-dispersion do not influence the vulcanization characteristics of ingredients and the physical properties of the products; and the rubber additive pre-dispersion and additive master batches can be granulated in an extruder by regulating a ratio of resin type chlorinated polyethylene (CPE) to a corresponding plasticizer and mixing in a banburying machine, and the master batches are blown into a collector through an air blower and are cooled transiently to obtain the pre-dispersion finish products of various additives. The rubber additive pre-dispersion can be widely applied to the field of production of the rubber additives.

The invention relates to a production system for carrying out anodizing low-voltage insulation treatment on copper clad aluminum wires, and in particular relates to a production system for carrying out anodizing low-voltage insulation treatment on copper clad aluminum wires after the copper clad aluminum wires are annealed. The production system comprises a pretreatment tank which is arranged behind an original production line and used for pretreating the copper clad aluminum wires, a reinforced anodizing tank which is arranged behind the pretreatment tank and used for oxidizing the surfaces of the copper clad aluminum wires, a hot air device which is arranged behind the reinforced anodizing tank and used for drying the surfaces of the copper clad aluminum wires, a sealing device which is arranged behind the hot air device and used for coating insulating materials on the dried copper clad aluminum wires, a drying device which is connected with a rear end of the sealing device and a wire takeup device which is arranged behind the drying device and used for winding and packaging the copper clad aluminum wires. The production system is high in production efficiency, stable in quality of produced products, lower in cost and suitable for upgrading industries in plants.

The invention discloses an aluminum-alloy electrophoretic wood-grain profile and a process for preparing the aluminum-alloy electrophoretic wood-grain profile. The process comprises the following steps of: preparing the refining alterative: smelting a mixed-rare-earth ingot, an AlTiB alloy and a pure aluminum ingot in a crucible to prepare the refining alterative; smelting an aluminum alloy: adding an alloying element, the refining alterative and aluminum into an energy-saving casting furnace, heating and smelting; preparing the profile: casting a solution into a cast ingot, and forming the aluminum-alloy profile by extruding; anodizing the aluminum-alloy profile; and carrying out electrophoretic coating on the aluminum-alloy profile. The aluminum-alloy electrophoretic wood-grain profile prepared by adopting the process has uniform surface coating, strong adhesion, good coverage and can be transferred completely and clearly, and is free from the appearance defect of exposure of the base outside the powdery coating, has 110-115 gloss units and is far superior to the traditional aluminum-alloy wood-grain profile in gloss.

The invention relates to a moderate-strength aluminum liquid cooled shell welding method. The method comprises the following steps: step S1, machining welding parts; step S2, pre-treating the parts; step S3, welding, wherein the distance from a seal weld to the inner wall of a liquid cooling flow channel is W1; the fusion depth D1 of the electron beam EB1 weld is equal to the summation of the thickness D of a cover plate, the thickness d of a solder material and (3-4)mm; a surface focus is adopted for welding; the scanning amplitude value of the electron beams is 0.2mm to 0.4mm; a finished weld adopts defocusing welding; the fusion depth D2 of the finished electron beam EB2 weld is 2mm to 4mm; the appearance condition of the electron beam weld is checked after welding; step S4, performing vacuum braze welding treatment; step S5, machining the shell after welding until a final product is obtained. The method disclosed by the invention has the advantages of realizing reliable welding of an embedded cover plate and a chamber body by adopting a reasonable joint design and electron beam welding and vacuum braze welding techniques, and greatly improve the maturity of a preparation technique of a liquid cooling project.

The invention provides a vacuum auxiliary exhausting type segmental mold. The vacuum auxiliary exhausting type segmental mold comprises a bow-shaped seat and a pattern block. Multiple annular exhausting lines located at the various multiple heights and arranged coaxial with a molding cavity of the vacuum auxiliary exhausting type segmental mold and one or more flow collection exhausting lines arranged perpendicular to the annular exhausting lines are limited between the inner side face of the bow-shaped seat and the outer side face of the pattern block, wherein each flow collection exhausting line is communicated with the annular exhausting lines. The pattern block is provided with multiple air flow channel layers located at the various heights. One or more air flow channels are arranged in each air flow channel layer. The outer end of each air flow channel in each air flow channel layer is communicated with the annular exhausting line at the corresponding height and the inner end of each air flow channel in each air flow channel layer is communicated with the molding cavity. In the vulcanizing process, gas in the molding cavity, especially gas in dead corners of the mold can be exhausted smoothly. A vacuum pump is used, so that the pressure in the molding cavity is close to the vacuum degree, the shape of the molding cavity is not affected, and a formed tire can has have the advantages of being small in tire burr number and clear and attractive in pattern edge.

A wholly aromatic liquid crystal polyester resin compound and product are disclosed. The disclosed wholly aromatic liquid crystal polyester resin compound comprises a wholly aromatic liquid crystal polyester resin and an electroconductive filler.

The invention relates to the field of lithium ion batteries, in particular to a lithium ion battery packaging housing, a preparation method and a lithium ion battery comprising the lithium ion battery packaging housing. A naked battery core of the lithium-ion battery is wrapped by the packaging housing, a sealing housing layer, a metal coating layer and a plastic coating layer are sequentially arranged from interior to exterior, the sealing housing layer wraps the naked battery core of the lithium-ion battery and is sealed, and then the metal coating layer and the plastic coating layer are sequentially arranged on the outer surface of the sealing housing layer. The materials of all the layers of the structure of the packaging housing are machined on the exterior of the lithium ion battery in the product manufacturing or packaging process, and packaging defects caused in a punching procedure are avoided when the thickness and the strength of folding positions and corners of the product are kept constant, so that the product packaging reliability is greatly improved, the housing does not have tensile deformation or wrinkling, appearance defects are avoided, the product appearance is improved, and the battery energy density is increased.

The purpose of the present invention is to provide an optical film manufacturing method with which generation of appearance defects caused by foreign substances and/or bubbles can be prevented even ifthe optical film is thin. Provided is a method for manufacturing an optical film that includes a laminate structure in which at least a first film and a second film are bonded to each other through an adhesive layer and/or a pressure-sensitive adhesive layer comprising a cured product layer of adhesive composition or a pressure-sensitive adhesive composition, said optical film manufacturing method including a first coating process for removing foreign substances by coating at least either the surface of the first film opposite the surface to be bonded to the second film or the surface of thesecond film opposite the surface to be bonded to the first film with a liquid material having a viscosity of 1 to 10000 cP using a gravure roll before bonding the first film and the second film.

The invention discloses switchable glass, and relates to the technical field of glass processing correlation. The switchable glass comprises glass, one side of the glass is fixedly connected to one side of a first bonding layer, the other side of the first bonding layer is fixedly connected to one side of a conductive dimming layer, and the other side of the conductive dimming layer is fixedly connected to one side of a second bonding layer. According to the switchable glass, the production cost is reduced and the use performance of each film layer is improved by re-adjusting the composition and composition ratio of each film layer. The invention further discloses a manufacturing method of the switchable glass. The manufacturing method comprises the following steps of step one, layer formation, step two, film manufacturing, step three, curtain coating, step four, spin coating, step five, sealing and pressing, step six, vacuum lamination, and step seven, pressurization. According to theswitchable glass and the manufacturing method thereof, two advanced spraying technologies of curtain coating and spin coating are adopted, so that a conductive hard coating, a conductive film and a polymer dispersed liquid crystal layer are closely attached together, and the function of the conductive dimming layer can be exerted.

The invention discloses flame-retardant ABS composition. The composition is prepared from the components of, by weight, 40-83 parts of ABS, 11-50 parts of fire retardant, 0-10 parts of processing agent. According to the composition and the preparation method thereof, it is selected that the content of the tin element in a formula of the flame-retardanat ABS composition is smaller than or equal to 3000ppm and larger than or equal to 10ppm, and the compounding total of the sulphur element and the phosphorus element is smaller than or equal to 2100ppm and larger than or equal to 10ppm. The composition has outstanding thermal stability and flame retardancy, and is capable of overcoming material appearance defects and maintaining good mechanical performance and particularly applicable to places where product molds are complex and pin-point gate cutting is serious.

The invention discloses a wall cabinet which is installed on a wall surface and comprises a top plate, a left side plate and a right side plate, a bottom plate and a back plate, wherein the left sideplate, the top plate, the right side plate and the bottom plate are vertically and fixedly in sequence connected to form a frame structure; the side edges of the back plate are connected with the topplate, the left side plate, the right side plate and the bottom plate separately; the back plate is close to the wall surface, a gap is formed between the back plate and the wall surface, and an LED joint filling lamp structure is arranged in the gap; and the LED joint filling lamp structure is arranged at the bottom and on one side, close to the wall surface, of the back plate. According to the wall cabinet, the hidden LED joint filling lamp structure is arranged in the gap between the back plate and the wall surface, so that the appearance defect caused by the gap between the back plate andthe wall surface is solved.

The invention provides a processing system and method for a shielding film and relates to the technical field of electromagnetic shielding. The processing system for the shielding film comprises a semi-finished product processing system and a finished product processing system. The semi-finished product processing system is used for coating a carrier film with an insulation layer so as to obtain a semi-finished shielding film. The finished product processing system is used for coating a protective film with a conducting layer and compositing the conducting layer with the insulation layer so as to obtain the finished shielding film. The technical problems of nonuniform coating, reduced coating continuity, appearance defects, and affecting of product performance caused by the fact that in the prior art, a semi-finished shielding film is directly coated with conducting layer glue are solved. The finished product processing system coats the protective film with the conducting layer firstly and then composites the conducting layer with the insulation layer of the semi-finished product, and accordingly the shielding film is obtained, so that the appearance and performance of the shielding film are better.

The invention provides a correction processing method of a fixture wheel groove profile for static-frequency detection and can solve problems that scratches and drawing marks are produced easily due to small gaps between blade root profiles and wheel groove profile non-working surfaces and high dead weight of blades in processes that the blades are mounted in wheel groove blocks and then move at present. The method comprises steps of finish milling processing and correction processing which are conducted sequentially; in the finish milling step, a blade root wheel groove profile is processed by the aid of a finish milling molding knife according to a designed blade root wheel groove profile; in the correction processing step, finish milling processing is performed once again in the position with the correction height h lifted overall on the basis of the blade root wheel groove profile by the aid of the finish milling molding knife used in finish milling processing, only an inside back working surface of a blade root wheel groove is processed in correction processing, and a non-working surface of the blade root wheel groove is not cut, so that a non-working surface profile, obtained through finish milling processing, of the blade root wheel groove and an inside back working surface profile, obtained through correction processing, of the blade root wheel groove are connected to form a correction profile of the blade root wheel groove, and the correction height h ranges from 0.2 mm to 1.0 mm.

The invention discloses a solid wood composite floor with impregnated paper veneer and a production process of the solid wood composite floor. The solid wood composite floor comprises a decorative thin board, a buffer board, a thick core board and a bottom board, wherein the thick core board serves as a core layer and is covered with the buffer board; the buffer board is covered with the decorative thin board; and the bottom board is arranged under the thick core board in a composite manner. Through the addition of a density board, the board surface cracking resistance of the solid wood composite floor can be remarkably improved through the impregnated paper veneer, the solid wood composite floor can be applied to a geothermal environment, and cracks are not easy to appear on the board surface; through the special watering and positioning processes, the problem that after the density board is assembled and hot-pressed with impregnated paper, spots are easy to appear on the board surface and the difficulty in processing a product with synchronous wood grain is high can be solved; and meanwhile, narrow wood slats serve as main raw materials of a substrate and are processed into the thick core substrate in a variety of ways such as splicing or series connection, so that the use of fast growing wood veneer can be reduced, the wood utilization rate can be improved, and forest resources can be saved.

The invention belongs to the technical field of high polymer materials, and in particular relates to a high specific gravity high-dispersibility and anti-impact ABS (Acrylonitrile Butadiene Styrene) material and a preparation method thereof. The high specific gravity high-dispersibility and anti-impact ABS material comprises the following components in parts by weight: 40-55 parts of ABS, 15-45 parts of precipitated barium sulfate, 10-35 parts of packing master batch, 1-3 parts of a compatilizer, 1-1.5 parts of a lubricant and 0.2-0.5 part of an antioxidant, wherein the packing master batch comprises the following components in parts by weight: 15 parts of metallocene LLDPE (Linear Low Density Polyethylene), 80 parts of precipitated barium sulfate and 5 parts of a processing aid; the packing master batch is prepared by using a twin-screw extruder through melting, extrusion, pelleting and drying. As the packing master batch with surface activated barium sulfate is mixed with ABS resin, the compatilizer, the lubricant and the antioxidant, the interface bonding force of the ABS resin and the precipitated barium sulfate is increased by the surface activated barium sulfate and the compatilizer, the toughness of an ABS composite material is improved, and the application range of the ABS composite material is broadened.

The invention discloses a technology for polishing a front-back die parting line on a mobile phone battery cover. The technology comprises the following steps: I, preparing a polishing machine; II, preparing a rotary table; III, placing two to-be-polished mobile phone battery covers on a pair of processing stations; IV, driving two sponge grinding wheels to carry out profile modeling polishing on the to-be-polished mobile phone battery covers on the two processing stations by a motor under the control of a controller, and simultaneously, carrying out dripping lubrication and cooling on the two sponge grinding wheels through two water pipes; and V, after the profile modeling polishing, rotating the rotary table, and taking down polished products. Through the steps, the front-back die parting line on the mobile phone battery cover is polished; the technology has the following characteristics: dust and undesirable odor are avoided, water can be recycled, the production process is short, and the production cost is low; in addition, the product appearance defect is overcome, and the product visual aesthetic feeling is improved.

The invention discloses a nozzle electron beam welding method. The method comprises the steps that a nozzle to be welded is installed in a receiver, so that assembling of the nozzle to be welded is completed; the assembled nozzle to be welded is installed on a welding clamp, and the included angle is set to be formed between the axial direction of the nozzle to be welded and the horizontal direction; the nozzle which is installed on the welding clamp and is to be welded is conveyed into a vacuum chamber, it is determined that the welding portion of an electron beam transmitting gun and the nozzle to be welded is arranged in a right-angle mode, and linkage of the X-axis and the Y-axis of a working table is utilized for completing welding of the nozzle to be welded. According to the method, the amount of steel for weld joint forming is effectively increased, and the appearance defect of weld joints is avoided; in the electron beam welding process, filler metal is not used, and the risks that due to the external filler metal, internal quality of the weld joints is poor, and the nozzle is blocked are avoided; weld heat input is controlled by controlling ascending and descending angles of beam currents in the electron beam welding process, welding deformation is reduced, the round welding track is achieved by driving linkage of the X-axis and the Y-axis of a numerically-controlled machine tool, and machining efficiency is high.

The invention provides an efficient EVA packaging adhesive film with the lamination time shortened, and a preparation method and application thereof. The preparation method of the EVA packaging adhesive film comprises the following steps of carrying out electron radiation on a transparent EVA adhesive film to obtain a pre-crosslinked transparent EVA adhesive film; carrying out electron radiation on a barrier EVA adhesive film to obtain a pre-crosslinked barrier EVA adhesive film; and carrying out lamination on the pre-crosslinked transparent EVA adhesive film and the pre-crosslinked barrier EVA adhesive film for 5 minutes to 10 minutes at the temperature of 140 DEG C to 150 DEG C to obtain the EVA packaging adhesive film. According to the efficient EVA packaging adhesive film with the lamination time shortened, and a preparation method and application thereof, under the conditions that no other additives are added, lamination is carried out after cross-linking is carried out on the transparent EVA adhesive film and the barrier EVA adhesive film through electron radiation, the time for lamination can be effectively shortened, reliability is not affected, apparent affects can be avoided, and the production cost is greatly reduced.