53 results about "Curtain coating" patented technology

The invention belongs to the technical field of degradable and high-barrier modified plastics, and particularly relates to an environment-friendly, high-oxygen-barrier and water-resistant modified plastic, a plastic alloy and a functional product of the environment-friendly, high-oxygen-barrier and water-resistant modified plastic and the plastic alloy. According to the material, polyvinyl alcohol is used as a main component and is blended with auxiliaries such as a plasticizer and a cross-linking agent through a twin-screw melt extrusion technology, and modified plastic (HB-PVOH) with excellent barrier property, water resistance and mechanical property is formed. In order to further enhance the performance, the HB-PVOH can be co-extruded with polymers such as polyhydroxyalkanoate, polymethyl ethylene carbonate, polylactic acid, poly (butylene succinate) and the like to prepare binary or ternary plastic alloy. The material can be widely applied to the fields of high-end packaging, oxygen barrier coatings, environment-friendly packaging and the like, plastic or paper-plastic composite products are prepared through a multi-layer co-extrusion-film blowing, curtain coating or film spraying technology, the sustainable development trend of aluminum reduction, plastic reduction and fluorine reduction is met, and the material is a green packaging solution which is high in cost performance, environmentally friendly and practical.

The invention firstly provides a structure of environment-friendly bottomless paper type thermo-sensitive paper. The structure comprises a base material, and a thermo-sensitive coating and a silicone oil layer which are sequentially laminated on one surface of the base material, the thermosensitive coating comprises a color developing layer, a pre-coating layer and a bottom coating layer which are laminated in sequence, and the bottom coating layer is laminated on one surface of the base material; secondly, a coating system is provided, and a color developing agent comprises 4, 4 '-sulfonyl diphenol; the invention also provides a preparation method which is used for preparing the thermo-sensitive paper by adopting the structure and the coating system, and comprises the following steps: coating the color developing layer on the surface of the pre-coating layer by using curtain coating; a novel structure is designed, a basis is provided for the self-curling release performance of the thermo-sensitive paper, a coating system uses 4, 4 '-sulfonyldiphenol, so that the color saturation, the light resistance and the stability of the thermo-sensitive paper can be improved, the thermo-sensitive paper does not react with silicone oil, the release performance is improved, a curtain coating method is adopted based on the structure and the coating system, and the self-curling release performance of the thermo-sensitive paper is improved. And the coating uniformity, color development and other properties of the thermo-sensitive paper are effectively improved, and the environment-friendly thermo-sensitive paper which is fast in reaction, bright in color and high in definition during printing is integrally formed.

The invention discloses a hot-melt type renewable phenolic resin and a preparation method thereof, and a hot-melt type renewable phenolic resin-based ablation-resistant composite material and a preparation method and a regeneration method thereof. The preparation method comprises the following steps: carrying out a melting reaction on a polyhydroxymethyl phenol compound and a dithiol compound to prepare the hot-melt type renewable phenolic resin; the preparation method comprises the following steps: heating hot-melt renewable phenolic resin so as to form a resin adhesive film through curtain coating, laminating the resin adhesive film and a fiber reinforcement body, passing through a roller, rolling to obtain a molten phenolic resin prepreg, and carrying out hot-press molding on the hot-melt phenolic resin prepreg to obtain the hot-melt renewable phenolic resin-based ablation-resistant composite material. The catalyst can be regenerated through an aprotic polar solvent dissolution-precipitation process. The prepared hot-melt renewable phenolic resin has the advantages of efficient repair, wide and adjustable viscosity range, high thermal decomposition temperature and high char yield, and endows the hot-melt renewable phenolic resin-based ablation-resistant composite material with reproducibility, self-repair property, ablation resistance and good mechanical properties.

The invention discloses a degradable fruit and vegetable fresh-keeping composite material based on multi-mechanism synergy and a preparation method thereof, and belongs to the technical field of food packaging materials, the degradable fruit and vegetable fresh-keeping composite material comprises the following components by weight: 35-45 parts of a biopolymer matrix, 12-18 parts of mechanical reinforced fiber, 18-25 parts of an ethylene catalytic scavenger, 8-12 parts of a slow-release preservative, 4-6 parts of glycerin, and 1.5-2.5 parts of citric acid; the preparation method comprises the following steps: respectively preparing the ethylene catalytic scavenger and the slow-release preservative; constructing basic gel; the functional components are uniformly dispersed in the gel, and the composite membrane material is prepared through curtain coating, drying, crosslinking and ultraviolet post-treatment. Through collaborative design of carrier loading, molecular embedding and nano-enhancement, efficient removal of ethylene, long-acting slow release of antibacterial and antioxidant activity, remarkable improvement of mechanical properties and unification of all-component biodegradation are realized, the shelf life of fruits and vegetables is effectively prolonged, and the preparation method is suitable for preparation of green packaging products.

The invention discloses a corona-resistant polyimide film based on a core-shell structure nano SiO2 (at) PS filler and a preparation method of the corona-resistant polyimide film, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: dissolving diamine in a solvent under the protection of an inert atmosphere to obtain a diamine solution; preparing a nano SiO2 (at) PS filler dispersion liquid with a core-shell structure; adding the nano SiO2 (at) PS filler dispersion liquid into a diamine solution, fully stirring, and adding dianhydride to obtain polyamide acid resin; and carrying out vacuum negative pressure defoaming on the polyamide acid resin, and then carrying out curtain coating, stretching and imidization to obtain the corona-resistant polyimide film. The preparation method comprises the following steps: carrying out surface amination on a nano SiO2 filler, fixing an ATRP (Atom Transfer Radical Polymerization) initiator, and carrying out surface initiation on ATRP grafted polystyrene to obtain a nano SiO2 (at) PS filler with a core-shell structure; the nanofiller SiO2 (at) PS can effectively avoid the agglomeration phenomenon and is easier to disperse, meanwhile, the nanofiller SiO2 (at) PS has better compatibility in a polyamide acid solution system, and the prepared corona-resistant polyimide film has more uniform corona resistance, insulation and mechanical properties.

The utility model discloses a multifunctional spraying and shower coating all-in-one machine, and relates to the technical field of evanescent mode coating, the multifunctional spraying and shower coating all-in-one machine comprises a containing mechanism, one end of the top surface of the containing mechanism is provided with a spraying mechanism, the containing mechanism comprises a moving wheel, the outer surface of the moving wheel is rotatably connected with a rotating shaft, the top surface of the rotating shaft is rotatably connected with a fixing plate, and the fixing plate is provided with a spraying mechanism. The top faces of the fixing plates are fixedly connected with a material containing hopper, the number of the fixing plates is four, and the four fixing plates are neatly distributed on the bottom face of the material containing hopper. The spraying mechanism can be installed on the side face of the material containing hopper through the installation plate, paint can be directly added into the paint storage bin through the top cover, a spray gun can be connected to the outer surface of the discharging valve, and therefore the paint can be evenly sprayed to the surface of a model through the spray gun; and through cooperation of a recycling pipe and a water pump, redundant paint can be pumped into the paint storage bin through a material conveying pipe to be recycled.

The invention discloses a polyving akohol-based composite film with multiple functions and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite film is prepared by taking polyvinyl alcohol (PVA) as a matrix and introducing an iron-tannic acid coordination complex (Fe-TA) and nano zinc oxide (ZnO NPs). The preparation method comprises the following steps: preparing a PVA solution; the preparation method comprises the following steps: coordinating ferric chloride hexahydrate with tannic acid to form a Fe-TA complex solution, and compounding the Fe-TA complex solution with a PVA solution; and adding the nano-zinc oxide dispersion liquid into the composite liquid, and carrying out defoaming, curtain coating and drying to form the film. Through the synergistic effect of Fe-TA and ZnO NPs, the problems that a pure PVA film is high in hydrophilicity and single in function are effectively solved. The obtained composite film has excellent mechanical strength, high oxygen and water vapor barrier property, efficient near-infrared light thermal response capability and long-acting antioxidant activity, and has wide application prospects in the fields of food active packaging, intelligent packaging and the like. The method is simple in process, environment-friendly and easy for large-scale production.

A system and method for producing a porous electrode with a high level of porosity, preferably mesoporosity, without the use of a binder. The electrode is formed by depositing a layer on a substrate from a colloidal suspension containing aggregated or agglomerated nanoparticles. Deposition methods include electrophoresis, ink-jet printing, doctor blade, roll coating, curtain coating, or dip-coating. The process includes drying and may involve additional consolidation steps such as pressing and / or heat treatment to enhance structural integrity, electrical conductivity, and adhesion. The heat treatment induces partial coalescence of nanoparticles, creating a three-dimensional porous structure that facilitates ion mobility. A thin coating of an electrically insulating or ion-conductive material may be applied to reduce interfacial reactions. The resulting porous electrode may be used in energy storage applications, such as lithium-ion batteries. The invention also includes a method for manufacturing batteries utilizing these electrodes and related battery designs.

The invention relates to a device for applying a treatment substance, in particular starch or size, to a moving paper and board web (11), in particular to a containerboard or corrugated board, by means of at least one curtain coating mechanism (2.1, 2.2). In order to provide an improved treatment substance coating device, the at least one curtain coating die can be supplied with differently prepared treatment substances, and the curtain coater (2.1, 2.2) combines both a film mode of operation and a slot mode of operation by providing an electrically and / or mechanically drivable gap adjustment device (3.1, 3.2) for the outlet gap (14.1, 14.2) of the control die lip applied to the curtain coating die, and optionally sets the outlet gap (14.1, 14.2) to 100 μm to 500 μm in the film mode of operation or to 500 μm to 2.0 mm in the slot mode of operation, so that the at least one curtain coating mechanism (2.1, 2.2) is designed to be able to be operated in two different modes of operation.

The invention discloses a die-casting forming die for machining a copper alloy sealing disc, and belongs to the technical field of die-casting formation.The die-casting forming die comprises a first die base, a second die base and a die-casting driving unit, a first die core is installed in the first die base, and a second die core is installed in the second die base; the first mold base is configured to move towards the second mold base so that the first mold core can be attached to the second mold core. The first heat exchange plate is controlled to slide in the heat exchange sleeve to be separated from the second heat exchange plate, the contact heat exchange efficiency is reduced, molten metal injected into the second mold core is continuously and fully cast in a heat preservation state, flow speed control over a heat exchange medium in the heat exchange pipe is matched, and the instantaneity of switching between a heat preservation system and a heat dissipation system is fully improved; and heat preservation control after curtain coating heat exchange of the heat exchange medium in the heat exchange tube or sufficient heat absorption is not needed.

The invention provides three-dimensional wave-absorbing honeycomb forming equipment. The three-dimensional wave-absorbing honeycomb forming equipment comprises a material table; the portal frame is arranged above the material table in a spanning mode. The numerical control displacement module is fixed to the portal frame and used for driving the machine head to move relative to the material table top. The prefabricated body storage bin is communicated with the machine head through a prefabricated body conveying module; the assembling turntable module is arranged between the prefabricated body storage bin and the prefabricated body conveying module and is used for driving the prefabricated body storage bin to be aligned with the prefabricated body conveying module; the honeycomb morphology feature detection module is fixed with the machine head and is used for generating a feeding track arrangement diagram; and the machine head puts preforms into the to-be-processed wave-absorbing honeycomb according to the feeding track arrangement diagram. By implementing the method, single holes in the wave-absorbing honeycomb can be subjected to shower coating, effective 2D plane electromagnetic separation surface design is formed, and the implementation reliability of a 3D electromagnetic separation surface design process is displayed; the problems of limitation of a traditional technology and errors of manual machining are solved, and the equipment blank in the technical field is filled up.

The utility model discloses chemical paint fading equipment for airplane components. The chemical paint fading equipment comprises an equipment outer cover, and a dip coating tank, a curtain coating tank, a reaction tank, a washing and air drying tank, a paint fading agent storage tank and a single-arm gantry manipulator which are arranged in the equipment outer cover, the dipping and coating groove is used for dipping and coating a paint fading agent in the dipping and coating groove; the curtain coating groove is used for curtain coating of a paint fading agent in the curtain coating groove, and a spraying pipe is arranged in the curtain coating groove; a spraying pipe in the curtain coating tank is connected with a liquid outlet of the paint fading agent storage tank through a spraying pump, and a liquid outlet of the spraying pipe is also connected to a waste liquid inlet of the paint fading agent storage tank, so that a circulating spraying system is formed; the reaction tank is used for carrying out paint fading reaction on the aircraft component treated by the dip coating tank or the curtain coating tank; a spraying air-drying pipe is arranged in the washing air-drying tank and is used for washing and water-cutting air-drying the airplane parts subjected to the paint fading reaction; and the single-arm gantry manipulator is used for driving the aircraft parts to move into the grooves for treatment.

The invention relates to a cooking-resistant easy-to-tear composite film and a preparation method thereof. The cooking-resistant easy-to-tear composite film is formed by integrally connecting a polyolefin heat-sealing layer, an easy-to-tear layer, a core layer and a composite layer through co-extrusion film blowing or curtain coating. And the polyolefin heat sealing layer is made of a polypropylene mixture and is added with 2-6% of opening smooth master batch. The easy-to-tear layer consists of a hydrogenated polystyrene elastomer, polybutylene and maleic anhydride grafted polypropylene. And the core layer is made of polypropylene or olefin copolymer. And the composite layer is made of corona-treated polyolefin. According to the preparation method, the composite film is prepared through multi-layer co-extrusion casting, can tolerate high-temperature cooking at 135-141 DEG C for 40 minutes, is stable in heat sealing strength, is free of wiredrawing phenomenon when being uncovered, is uniform in blank leaving, is suitable for packaging of metal cans, standing pouches and the like, and meets the high-sterilization requirements of cooked food, milk powder and the like.

The utility model discloses a plastic extrusion lamination composite unit stand column reel changing and unwinding device which comprises a first fixing plate, a discharging reel is arranged on the side face of the first fixing plate, a clamping device is arranged at the other end of the discharging reel, a second fixing plate is arranged on the side face of the clamping device, and a first fixing plate and a second fixing plate are arranged on the second fixing plate. And a moving device is arranged below the second fixing plate. By means of the structure, the problems that when a traditional roll changing and unwinding device is used for disassembling a winding roll or an unwinding roll, tedious steps are usually needed, and a large amount of manual operation is needed can be solved, the problems that the working intensity of workers is greatly increased, and the working efficiency is reduced are solved, and the working efficiency is improved. By means of the roll changing and unwinding device, the problem that when part of roll changing and unwinding devices are used for assembling the winding rolls or the unwinding rolls, the winding rolls or the unwinding rolls which are manually placed generally incline can be solved, the problem that the quality of subsequent machining is reduced is solved, and the problem that the practicability of the device is reduced is solved.

The invention relates to the technical field of curtain coating film forming and profiling, and provides curtain coating film forming and profiling equipment for composite non-woven fabric and a profiling production technology.The curtain coating film forming and profiling equipment for the composite non-woven fabric comprises a sliding rail, a tension adjusting mechanism and a rapid temperature adjusting mechanism, and when an extrusion system slides, a molten material can be driven to move; the tension adjusting mechanism is arranged on the side, close to the pressing position of the molten material, of the extrusion system, the tension adjusting system can supply air to the molten material, and the rapid temperature adjusting mechanism is fixedly connected to the machine body frame and can adjust the temperature of the molten material to be adjusted. The extrusion system is arranged between the tension adjusting mechanism and the rapid temperature adjusting mechanism, the rapid temperature adjusting mechanism can make contact with the tape casting forming system, the surface temperature of the tape casting forming system is rapidly adjusted, and the technical problem that in the prior art, the thickness difference of concave-convex positions of lines on non-woven fabric is large during tape casting film forming pressing is solved.

The invention relates to an ultra-thin iodine polaroid, a preparation method and an ultra-thin circular polaroid, and the ultra-thin iodine polaroid comprises polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol and iodine and / or potassium iodide dispersed in the polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol in a dissolving manner. According to the invention, iodine and / or potassium iodide are / is dissolved and dispersed in polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and the ultrathin iodine polarizer is finally obtained through the steps of material mixing, distillation, extrusion, coating, curtain coating, one-way calendering, stretching and drying. On the first aspect, iodine and / or potassium iodide are dispersed more uniformly by adopting a dissolving and dispersing mode, so that the degree of polarization and the light transmittance of each part of the polaroid are guaranteed; on the second aspect, the polaroid does not need to be clamped and fixed by a cellulose triacetate film, so that the thickness of the polaroid can be further reduced; and thirdly, a retarder is compounded on the ultra-thin iodine polaroid, so that the purpose of manufacturing the ultra-thin circular polaroid is achieved.

The utility model discloses an environment-friendly laminating and coating device for a paper-plastic composite bag, which belongs to the field of composite bag production and comprises a composite bag laminating and coating device connecting bottom plate total component, and one side of the composite bag laminating and coating device connecting bottom plate total component is fixedly connected with a telescopic rod. A coating head assembly is fixedly connected to one side of the telescopic rod, a limiting guide plate is fixedly connected to the side, connected with the bottom plate total component, of the composite bag film coating device, and a supporting arm is fixedly connected to the side, connected with the bottom plate total component, of the composite bag film coating device; through cooperative use of the devices, when a user needs to conduct coating, the user needs to place a composite bag on a transmission roller, after the user places the composite bag, the user needs to turn on an output motor, and after the output motor is started, the transmission roller fixedly connected to the top end of an output shaft of the output motor in a sleeving mode can be driven to rotate; in this way, the compound bag can be used and transmitted through the transmission roller.

A preparation method of an anisaldehyde microcapsule / polyvinyl alcohol composite film applied to carrot preservation comprises the following steps: firstly, preparing anisaldehyde emulsion: weighing starch, slowly adding distilled water, heating under stirring until the starch is completely gelatinized, and cooling to room temperature; the preparation method comprises the following steps: weighing chitosan, adding an acetic acid solution, placing in a water bath kettle, heating under magnetic stirring at 90 DEG C until the materials are dissolved, and cooling to room temperature; uniformly mixing the two materials to serve as a wall material of the microcapsule; respectively adding anisaldehyde into the wall materials, and homogenizing the mixed solution at a high speed to obtain anisaldehyde emulsion; secondly, preparing anisaldehyde microcapsules: drying the anisaldehyde emulsion, collecting the anisaldehyde microcapsules, and storing the anisaldehyde microcapsules in a refrigerator for later use; preparing an anisaldehyde microcapsule / polyvinyl alcohol composite film: weighing polyvinyl alcohol, slowly adding distilled water, and heating while stirring; adding glycerol into the polyvinyl alcohol solution, and stirring; the anisaldehyde microcapsules are added into a polyvinyl alcohol solution, the solution is subjected to curtain coating to form a film after high-speed homogenization, and the film is dried at room temperature.

The application relates to the technical field of extrusion curtain coating composite equipment, in particular to a multi-layer extrusion curtain coating composite unit, which comprises a trimming rack of a curtain coating composite machine, the upper end of the trimming rack is provided with a conveying table, the upper end of the trimming rack is provided with a trimming mechanism, the trimming mechanism comprises a transverse adjusting assembly, the transverse adjusting assembly is provided with a longitudinal adjusting assembly, the longitudinal adjusting assembly is provided with a longitudinal sliding block with a built-in ball nut, the outer side of the longitudinal sliding block is provided with a supporting rod, the lower end of the supporting rod is provided with a fixing rod, and the fixing rod is provided with a roller, the trimming mechanism is arranged, a double-dimension adjusting structure of the transverse adjusting assembly and the longitudinal adjusting assembly is constructed, synchronous and opposite or opposite and synchronous precise displacement of two cutters is realized, the trimming demand of the composite film with different widths is quickly adapted, the longitudinal height of the cutter is flexibly adjusted, and the adaptability to the composite films with different thicknesses is ensured.

The invention discloses an ultrathin high-strength lithium ion battery diaphragm and a preparation method thereof, and belongs to the technical field of lithium ion battery diaphragms. The preparation method of the ultrathin high-strength lithium battery diaphragm comprises the following steps: carrying out pre-swelling treatment on mixed low-molecular-weight PE (Polyethylene) and a pore-foaming agent, and then melting and plasticizing to obtain a melt 1; carrying out pre-swelling treatment on the mixed high-molecular-weight PE and a pore-foaming agent, and then carrying out melting plasticization to obtain a melt 2; carrying out tape casting treatment on a uniform melt formed by mixing the melt 1 and the melt 2 to obtain a cast sheet; and carrying out multi-stage longitudinal stretching on the obtained casting piece, and then carrying out synchronous two-way stretching, extraction and transverse stretching to obtain a finished product diaphragm. According to the invention, PE raw materials with different high molecular weights are adopted, and are respectively plasticized and processed, and then are subjected to mixing, curtain coating, multi-stage stretching and other operations, so that the diaphragm can be thinned, and meanwhile, the strength and the thermal stability of the diaphragm can be effectively balanced.

A coated metal sheet obtainable by a process for producing a coated metal sheet comprising the following steps: (i) providing a metal sheet; (ii) applying a coating composition to at least one side of the metal sheet; and (iii) baking the coating composition; wherein - the coating composition comprises a thermoplastic polymer; - the coating composition is a dispersion comprising the thermoplastic polymer in the form of dispersed particles; - the dispersed particles have an average particle diameter of at least 10 µm; - the coating composition does not comprise a fluorinated compound; and - the application of the coating composition comprises dip coating, knife coating, pouring, roll coating or a combination of two or more thereof.

The utility model provides a pre-flattening mechanism for curtain coating processing of a filter membrane, which relates to the technical field of filter membranes and comprises an operation box, four corners of the bottom of the operation box are fixedly connected with supporting legs, the top of the operation box is provided with a through hole, and the bottom of the inner wall of the operation box is provided with a flattening mechanism. The motor is started and rotates to drive the stretching wheel to rotate, friction force of rotation of the stretching wheel is reduced through the arrangement of the balls, efficient fixing of the stretching wheel is facilitated through the arrangement of the positioning balls, the stretching wheel is prevented from deviating, and meanwhile through the arrangement of the universal coupling, the stretching wheel can be conveniently and rapidly fixed. And a plurality of stretching wheels can rotate synchronously, so that the filter membrane is uniformly stretched to the outer side, an electric push rod moves to the bottom to drive an air pump to move to the bottom, a suction head at the bottom of the air pump efficiently adsorbs the filter membrane, and the filter membrane can efficiently move by rotating a rotating column.

The curtain type coating die head comprises an upper die and a lower die with the front ends inclined upwards, the rear portions of the upper die and the lower die are connected into a whole through die locking screws, the left side face and the right side face of the upper die and the left side face and the right side face of the lower die are provided with a left side plate assembly and a right side plate assembly respectively, and the rear side face of the lower die is provided with a feeding port. A first-stage buffer cavity is formed in the middle area of the top face of the lower die in the breadth direction, the bottom face of the first-stage buffer cavity communicates with the feeding port through a feeding channel, an extrusion channel is formed in the position, on the front side of the first-stage buffer cavity, of the top face of the lower die, and a second-stage buffer cavity is formed in the position, on the front side of the first-stage buffer cavity, of the top face of the lower die in the breadth direction. The bottom face of the front side face of the lower die extends downwards to form an arc-shaped guide part. The die head is not in contact with the base material, the extruded material slides to the surface of the base material through the gravity of the material, and a uniform and compact coating is formed on the surface of the base material.

1. Name of the product in this design: Two-component spray coating equipment. 2. Application of this design: This design is applied to the field of coating technology for two-component fluids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to an aqueous composition for preparing a paper coating slip for curtain coating. This composition comprises a non-sulfonated surfactant compound, mineral particles, a binding agent, and a thickening agent. It does not comprise a sulfosuccinate compound. The invention also relates to a curtain coating method for the preparation of paper or cardboard.

The invention relates to the technical field of curtain coating material belt transverse cutting, in particular to a curtain coating material belt transverse cutting device which comprises a supporting frame, a cleaning machine, a control unit, a material receiving telescopic fork, a support, a transverse cutting assembly and a conveyor. The cleaning machine is fixedly installed on one side of the long edge of the supporting frame, the control unit is fixedly installed on the other side of the long edge of the supporting frame, the material receiving telescopic fork is movably installed on the top of the supporting frame, the support is fixedly installed on one side of the short edge of the supporting frame, the conveyor is fixedly installed on the support, and the transverse cutting assembly is fixedly installed on the support. The transverse cutting assembly is close to one side of the conveyor on the supporting frame. According to the tape-casting material belt cutting device, in the cutting process of the tape-casting material belt, the tape-casting material belt is prevented from being slightly shrunk, stretched or shaken, meanwhile, cuttings are prevented from being generated, flatness of a notch is guaranteed, and the cutting precision is greatly improved.

The utility model relates to the technical field of laminating machines, in particular to a safe laminating machine without peculiar smell. According to the technical scheme, the device comprises a machine body, a first cavity is formed in the middle of the interior of the machine body, a roller is rotationally installed in the middle of the interior of the first cavity, an air outlet disc is fixed to the top and bottom end of the interior of the first cavity, an accumulation suction cover is fixed to one side of the interior of the first cavity, and a third cavity is formed in one side of the interior of the machine body; and a second fan is fixed to the middle of the interior of the third cavity, a second cavity is formed in the other side of the interior of the machine body, a motor is fixed to the interior of the second cavity, and the output end of the motor is connected with a roller. The air outlet disc is installed at the top end and the bottom end in the machine body, the air outlet holes formed in the surface of the air outlet disc are used for blowing and cooling the top surface and the bottom surface of the non-woven fabric, the cooled air can be sucked into the air suction cover and sent into the filter cylinder to be processed, and the situation that workers feel uncomfortable due to the fact that the air leaks out and is sucked into the air suction cover is avoided.

The utility model discloses a coating liquid feeding and recycling integrated device which comprises a transversely-arranged falling curtain coating nozzle, a conveying roller is arranged below the falling curtain coating nozzle, the conveying roller is rotationally installed in a recycling hopper, and the top of the recycling hopper is provided with an opening; the bottom of the recovery hopper is connected with a filter through a pipeline, two filter cavities are formed in the upper part of a main body of the filter side by side, a collecting cavity is formed in the lower part of the main body of the filter, the collecting cavity is communicated with the bottom ends of the two filter cavities, and filter elements are mounted in the filter cavities; the bottom of the filter is connected with one end of a liquid return pipe, and a second electromagnetic three-way valve, a reflux pump and a check valve are sequentially installed on the liquid return pipe. According to the coating liquid feeding and recycling integrated device provided by the utility model, the filter element can be replaced on the premise that the coating operation is not stopped, so that the normal coating process is ensured.

The present application belongs to the technical field of light-cured coating, and particularly relates to a coating composition capable of being identified by color and applied on a soft PVC substrate, and a preparation method and application of the coating. The coating composition comprises the following components in mass fraction: 50-70 parts of light-cured base resin; 1-2 parts of photoinitiator; 1-3 parts of color paste; 10-15 parts of isobornyl acrylate solution of chlorinated polypropylene; and active diluent. The coating composition can be directly applied on the PVC substrate without pre-treatment of the substrate. The film forming process is simple, and the film can be formed by means of blade coating, curtain coating and spraying. The curing speed is fast, and the coating after curing has no shrinkage, and is suitable for continuous industrial production line. The transparent coating and colored coating prepared after light curing have the characteristics of fast curing, wear resistance, good toughness, high adhesion and removal of coating solvent, and excellent aging resistance. No VOC is released during the film forming process, which is more environmentally friendly. The light-cured thickness of the coating can reach 300 microns, and has a significant application prospect.

1. The name of the design product: double-component curtain coating equipment. 2. The use of the design product: the design product is applied to the coating technology field of double-component fluid. 3. The design points of the design product: the shape of the product. 4. The picture or photo that best indicates the design points: perspective view 1.