99 results about "Polyester mesh" patented technology

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof, in the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, the modified composite material is added into a polyvinylidene fluoride-hexafluoropropylene copolymer, fibers are formed through an electrostatic spinning method, the fibers are deposited on a polyester net base lining, and the multifunctional composite hydrophobic membrane is prepared. Nano-silica and hydroxyl multi-walled carbon nanotubes are modified, agglomeration is effectively avoided, the hydrophobic membrane has good mechanical strength and toughness, and microcosmic multi-dimensional roughness of the surface of the membrane can be achieved by introducing an inorganic-organic nano hybrid material. Fluorine atoms in a perfluorooctyl ethyl acrylate structure have relatively low surface energy, so that the surface energy of the film can be remarkably reduced, the surface of the film has low surface energy and a rough structure, and the film is high in hydrophobicity and good in chemical stability.

The invention discloses a preparation method and application of a conductive fiber material with tensile negative resistance response. The preparation method comprises the following steps: S1, performing melt spinning on polyester to obtain polyester filaments; s2, performing drafting, false twisting and heat setting on the polyester filament yarns to form polyester tensile deformation grid yarns; s3, immersing the polyester tensile deformation grid yarns in a Tris buffer solution, and adding dopamine to polymerize the polyester tensile deformation grid yarns to form a polydopamine layer; s4, the polyester grid yarn with the polydopamine layer is soaked in a solution containing silver ions, and the silver ions are chelated with amino and phenolic hydroxyl groups in polydopamine; and S5, reducing silver ions on the surface of the fiber into silver nanoparticles through an in-situ reduction reaction, and uniformly loading the silver nanoparticles on the surface of the polyester mesh yarn by utilizing the adsorption effect of polydopamine. The conductive fiber prepared by the method disclosed by the invention has negative resistance response, and is suitable for the fields of intelligent wearable textile equipment, medical monitoring equipment and textile materials needing conductive and antibacterial properties at the same time.

The utility model discloses strength detection equipment for polyester net production, and relates to the technical field of strength detection equipment. The strength detection equipment for polyester net production comprises a fixed bottom plate and a strength detection assembly, sliding grooves communicating with the fixed bottom plate are formed in the left side and the right side of the fixed bottom plate correspondingly, the strength detection assembly comprises a double-shaft hydraulic air cylinder, the double-shaft hydraulic air cylinder is fixedly connected to the bottom of the fixed bottom plate, and a first hydraulic pressure sensor is arranged on the double-shaft hydraulic air cylinder; two multi-section hydraulic telescopic rods and a pressing roller are arranged, the pressing roller makes contact with a polyester net, the center of the polyester net is driven to move downwards, and the tension of the polyester net is detected; therefore, the strength detection equipment for polyester net production can detect the tension and the drawing force of the polyester net, the detection equipment does not need to be continuously switched, and the practicability of the strength detection equipment is improved.

This utility model relates to the field of screen printing technology and discloses a novel composite screen printing structure, including an installation frame. A polyester mesh is adhered to the upper end of the installation frame, a composite fabric is adhered to the upper end of the polyester mesh, and a steel wire mesh is adhered to the upper end of the composite fabric. In this utility model, when the composite screen printing structure is used and edge sealing is completed, the snap-fit ​​design of the positioning block and positioning groove ensures precise positioning of the edge sealing frame during installation, allowing the edge sealing frame to accurately align with the corresponding position, thereby ensuring the accuracy and stability of the overall structure. At this time, the limiting block is compressed by the force driving the limiting spring. When the limiting block coincides with the limiting hole, the limiting spring releases its force, causing the limiting block to rebound, thus firmly snapping it into the limiting hole, thereby limiting the edge sealing frame. This ensures that the edge sealing frame maintains a stable position after installation, thereby reducing the stress on the edge sealing material and extending its service life.

The invention relates to the technical field of printing screens, in particular to a pure opening printing screen and a manufacturing method thereof.The manufacturing method of the pure opening printing screen comprises the steps that a polyethylene film and metal mesh cloth are sequentially attached to a polyester mesh, the metal mesh cloth and the polyester mesh are tightly attached together in a hot pressing mode, and composite mesh cloth is formed; the designed processing drawing is guided into a laser machine, and a yarn removing area, a yarn removing path and a yarn removing sequence are set; starting a yarn removing program of the laser machine, completely removing steel wires in the X-axis direction and the Y-axis direction of the yarn removing area of the composite screen cloth, and forming a hollow opening in the yarn removing area of the composite screen cloth; carrying out plate making by adopting the composite screen cloth which is qualified after the product inspection to obtain a pure opening printing screen plate; according to the manufactured pure-opening printing screen, the printing screen can achieve the effect that no steel wire blocks an ink discharging channel in a required effective area, and the situation that the steel wire influences the printability and the printing effect of an ink penetrating area is avoided.

The invention discloses a weather-resistant waterproof coiled material based on modified polyolefin and a manufacturing process, and relates to the technical field of high polymer material preparation. The waterproof coiled material is obtained by compounding an upper surface layer, a polyester layer, a polyester grid layer and a lower surface layer, the upper surface layer and the lower surface layer are both modified polyolefin coiled material layers. The preparation method has the beneficial effects that by modifying the ethylene propylene diene monomer and the ethylene-octylene copolymer, the ethylene propylene diene monomer and the ethylene-octylene copolymer are grafted with flame-retardant chain segments, so that the flame-retardant property of the waterproof coiled material is effectively improved; meanwhile, through dehydration condensation, the surface of the nano silicon dioxide has similar chain segments of ethylene propylene diene monomer and ethylene-octene copolymer, so that the compatibility of the nano silicon dioxide and matrix resin is improved, and the weather resistance of the whole material is enhanced.

The invention discloses a technological process monitoring method and system for a polyester net, and belongs to the technical field of intelligent control, and the method comprises the steps: obtaining real-time technological parameter data in the production process of the polyester net; inputting the real-time process parameter data into a digital twin model, predicting the mesh forming quality of the next period, and generating predicted quality parameters; collecting a polyester mesh surface image, inputting the polyester mesh surface image into the semantic segmentation neural network, identifying a mesh abnormal region, and generating an actual mesh quality score; on the basis of a deviation value between the predicted quality parameter and the actual mesh quality score and energy consumption per unit yield, constructing a reward signal and inputting the reward signal into a deep reinforcement learning controller; the deep reinforcement learning controller outputs a process parameter adjustment instruction and sends the process parameter adjustment instruction to an execution mechanism; and feeding back the actual mesh quality score to the digital twin model, correcting the error of the prediction quality parameter, and updating the model synchronization precision. The product quality stability is improved.

The utility model relates to the field of screen printing technology, and particularly discloses a full-opening solar cell screen printing plate which comprises a screen frame, a polyester screen and a screen printing metal net. The silk-screen metal net comprises a silk screen and a PI film pasted on the silk screen, silk drawing is conducted on the silk screen corresponding to a printing area to form a grid line area used for printing grid lines, a grid line groove used for printing the grid lines is formed in the PI film corresponding to the grid line area, the grid line groove is formed in the direction perpendicular to the steel wire drawing direction of silk drawing, and the grid line groove is located between every two adjacent steel wires. The grid line areas are formed in the printing area of the silk screen through silk drawing, the grid line grooves are formed in the positions, corresponding to the grid line areas, of the PI film, and the grid line grooves are perpendicular to the drawn-out steel wires and located between every two adjacent steel wires, so that machining of the grid line grooves is not affected by the wire diameter of the silk screen, the machining precision can be effectively improved, and the machining efficiency is improved. Therefore, the printing precision of the grid line is improved.

The present invention discloses a composite glass stone and a preparation method thereof, wherein the composite glass stone is composed of a stone part and an outer frame arranged on the periphery of the stone part, a sealing belt is arranged at the section of the stone part, and a light source is arranged inside the outer frame. The composite glass stone of the present invention is provided with a sealing belt at the section, which can effectively prevent the viscosity of the adhesive layer from decreasing after absorbing water; the provision of the outer frame and the light source is helpful for the image display of laser engraved tempered glass; in the process of bonding the composite glass stone, the present invention removes moisture and bubbles in the glass, adhesive layer, stone and polyester mesh through pretreatment, which can ensure that the composite glass stone is bonded more firmly; and then through bonding and shaping, the overflow glue generated during bonding is removed, and the bubbles in the adhesive layer and the sealing belt are further removed, so as to ensure the bonding strength and decorative beauty of the composite stone.

The invention relates to the technical field of plastic processing, and discloses a papermaking polyester net production device which comprises a fixed side, a movable side arranged on the outer side of the fixed side and matched with injection molding, a cooling liquid channel fixedly installed on the inner surface of the movable side and matched with a cooling material, and a branch pipe fixedly connected to the lower portion of the cooling liquid channel. And the first electromagnetic valve is fixedly mounted on the outer surface of the branch pipe and cooperatively controls the flow direction of the cooling liquid. According to the mold, cooling liquid can be controlled to enter the cooling channel to cool materials through the mold body, or the cooling liquid can be controlled to enter the filtering tank, particulate matter in the cooling liquid can be intercepted and removed through cooperation of the filtering assembly, the sweeping assembly and the waste discharging assembly, and the cleanliness of the cooling liquid is ensured; the problems of cooling channel abrasion and blockage caused by excessive impurities are reduced; through cooperation of the force storage assembly and the force application assembly, the filtering tank can be impacted by the pendulum bob to generate vibration, and stubborn particles attached to the filtering net are vibrated down through vibration.

The utility model relates to the technical field of silk screen processing, in particular to a silk screen fuse machine which comprises a fuse machine body, an installation frame is fixedly connected to the bottom of the inner wall of the fuse machine body, a hydraulic cylinder is installed on the inner wall of the installation frame, and the output end of the hydraulic cylinder is fixedly connected with a top plate. A supporting frame is fixedly connected to the side face of the inner wall of the fuse machine body, a bearing plate is fixedly connected to the outer side of the supporting frame, a fixing plate is fixedly connected to the bottom of the bearing plate, high-temperature-resistant foam is arranged at the bottom of the fixing plate, and a containing assembly is arranged at the top of the top plate. According to the device, the hydraulic cylinder, the heating plate, the heat conducting plate, the silk screen, the polyester screen, the high-temperature-resistant foam and the PE film on the surface are arranged in a matched mode, the fusion effect of the polyester screen, the silk screen and the PE film in a uniform heating state can be good, and the surface of the fusion plate of the polyester screen, the silk screen and the PE film is in a flat state through matching of the heat conducting plate and the high-temperature-resistant foam.

The present invention discloses a weather-resistant waterproof roll material based on modified polyolefin and a manufacturing process, and relates to the technical field of polymer material preparation. The waterproof roll material is obtained by compounding an upper surface layer, a polyester layer, a polyester mesh layer, and a lower surface layer; the upper surface layer and the lower surface layer are both modified polyolefin roll material layers. Advantages: The present invention effectively improves the flame retardant properties of the waterproof roll material by modifying EPDM rubber and ethylene-octene copolymer so that the two are grafted with flame retardant segments; at the same time, through dehydration condensation, the surface of the nano-silica has similar segments to EPDM rubber and ethylene-octene copolymer, thereby improving its compatibility with the matrix resin and enhancing the weather resistance of the overall material.

The invention provides an omega-pentadecanolide / cross-linked polyester autocrine lubricating material as well as a preparation method and application thereof, and belongs to the technical field of organic gel. The omega-pentadecalactone / crosslinked polyester self-secretion lubricating material is prepared through a photocuring reaction, a matrix is poly (omega-pentadecalactone)-containing crosslinked polyester, and an embedded small molecule is omega-pentadecalactone; reversible release omega-pentadecanolide is obtained by utilizing crystallization-melting of a cross-linked polyester network; due to the time-temperature dependence of crystallization / melting of the polyester network, the secretion volume and the secretion speed which are dynamically regulated and controlled are further obtained; the alpha, omega-pentadecalactone is used as a crystalline micromolecule, and crystallization-melting phase change of the alpha, omega-pentadecalactone is controlled, so that a controllable released substance condensed state is obtained. Due to the lubricating effect of omega-pentadecanolide secreted by the omega-pentadecanolide / cross-linked polyester self-secretion lubricating material, controllable friction coefficient and liquid drop sliding, deadhesion and other properties are shown.

The present application provides a kind of omega-pentadecalactone / crosslinking polyester autocrine lubricating material and its preparation method and application, belong to organic gel technical field.The present application is prepared by photo-curing reaction omega-pentadecalactone / crosslinking polyester autocrine lubricating material, wherein matrix is the crosslinking polyester containing poly (omega-pentadecalactone), and small molecule is omega-pentadecalactone;Utilize the crystallization-melting of crosslinking polyester network to obtain reversible release omega-pentadecalactone;Due to the time-temperature dependence of polyester network crystallization / melting, further obtain the dynamic control of secretion amount and secretion speed;Omega-pentadecalactone is as crystalline small molecule, control its crystallization-melting phase change and further obtain the condensate state of controllable release;Due to the lubricating effect of omega-pentadecalactone / crosslinking polyester autocrine lubricating material secretion omega-pentadecalactone, controllable friction coefficient and droplet sliding, debonding and other properties are shown.

The utility model discloses a metal printing screen capable of eliminating static electricity, which comprises a conductive screen frame, polyester screen cloth is stretched in the screen frame, a metal mesh connected with the polyester screen cloth is arranged in the center of the polyester screen cloth, and a conductive wire is connected between the metal mesh and the screen frame. The conductive wires can be woven in the polyester screen cloth; the conductive wire is a steel wire or a copper wire; the metal mesh is an electroforming nickel mesh, a nickel alloy electroforming mesh, an electroforming nickel and nickel alloy metal plate, a laser cutting steel plate or a chemical etching metal printing screen plate. According to the metal printing screen, one or more conductive wires are connected to the screen frame in the screen pattern metal area, static electricity is conducted to the printing machine table, the printing machine table is provided with a grounding wire, the problem that the printing effect becomes poor gradually due to the fact that foreign matter is adsorbed by the static electricity can be solved, the overall function is complete, and practicability is high.

A scaffold for bone-tissue engineering includes a mesh and a coating on the mesh. The mesh includes a plurality of offset layers of filaments of polyester. The coating covers the mesh and includes magnesium hydroxide / copper oxide nanoparticles suspended in gelatin. A method of constructing the scaffold comprises combining magnesium hydroxide / copper oxide nanoparticles with a gelatin solution and coating a polyester mesh with the combined magnesium hydroxide / copper oxide nanoparticle and gelatin solution.

The utility model discloses a polyester forming net inserting machine and a polyester net, and relates to the technical field of polyester net forming devices. The device comprises a bottom plate, a vertical rod is fixedly arranged on the upper surface of the bottom plate, a fixing plate is fixedly arranged at the upper end of the vertical rod, a driving motor is fixedly arranged on the upper surface of the fixing plate, a first screw rod is rotationally arranged between the lower surface of the fixing plate and the bottom plate, and a transverse rod is arranged on the outer side surface of the first screw rod in a sleeving mode. The rotating disc can be rotated through the semicircular notch, the lantern ring drives the check block to move, the check block can be adjusted to any height position, the height position adjusting flexibility of the check block is improved, the fixing frame can make contact with the check block through the force of the first spring, and before the check block makes contact with the fixing frame, the check block is fixed through the first spring. The second wedge-shaped block firstly makes contact with the first wedge-shaped block, the second wedge-shaped block moves towards the side face, the movable rod moves towards one side, the rubber ball makes contact with the anti-skid plate, friction force is increased, and the stability of equipment in the production process can be improved.

The utility model relates to the technical field of polyester yarn processing, in particular to a polyester grid yarn interlacer device which comprises a mounting plate, yarn guide mechanisms are symmetrically mounted at the upper end of the mounting plate, a nozzle assembly is mounted in the middle of the mounting plate, and the nozzle assembly comprises an air pipe mounted in the middle of the mounting plate. Compared with the prior art, the device is reasonable in structural design, the upper shell and the lower shell which are convenient to disassemble are combined and installed in a sealed mode, the pressure sensor is used for monitoring the air pressure value in the lower thread groove and the upper thread groove in real time, the air pressure value in the lower thread groove is monitored in real time, and the network assembly is connected to the upper end of the nozzle body. And when the pressure sensor detects that the air pressure value is lower than a set value, the whole equipment is shut down, then the upper shell is detached, the nozzle body is overhauled and cleaned, and the working efficiency is effectively improved.

Steel flare / signal pistol - Figure 1 - 1. as a breech-loading pistol (1) 1. with rooster (2) 2. with a tilting barrel (3) such as this one from Heckler & Koch with a bore of 30-40 mm, a length of 100 to 150 mm, the pivot / tilt axis (6) and the trigger guard (7). The tilting barrel - Figure 2 - Enables quick cartridge changes. 2. These contain a cartridge (4) based on a standard shotgun cartridge - Figure 3 - with a propellant charge (8) which is capable of pressing a [missing information] in front of the propellant charge polyester mesh or other rubber-like material (5) - Figure 4 - The net is hurled to a distance of 2 to 10 meters, the usual proximity between the individuals involved. Due to air resistance, the net expands to a width of approximately 1.5 meters, restricting the "attacker's" movement so severely that the user of the weapon can easily overpower them without endangering themselves and prevent any attack. The heat from the ignited propellant causes the polyester net to melt slightly, becoming sticky and adhering to the person hit. This prevents them from freeing themselves quickly enough to avoid being restrained by police officers or even launching an actual attack.

The invention relates to the technical field of precision printing, and discloses a composite screen printing plate based on a double-layer polyimide film, which comprises a precision printing layer, a printing layer, a printing layer and a printing layer, the supporting ink penetrating layer is composed of a second polyimide film and is compounded with the precise printing layer through a middle bonding layer; and the composite reinforced substrate layer is polymer screen cloth and is fixedly connected with the back surface of the supporting ink-permeable layer through a hot melt adhesive layer. According to the invention, the expensive stainless steel wire mesh or steel sheet is replaced by the cheap polyester mesh and the high-molecular adhesive; the material cost is reduced, the preparation process is simplified, and the manufacturing cost and the energy consumption are further reduced; the whole screen functional structure is composed of the polyimide film and the polymer glue layer, and the thermal expansion coefficients of all layers of materials are similar, so that the inherent thermal mismatch problem of a traditional metal-PI composite structure is solved; under the environment of temperature change, all the layers cooperatively deform, and pattern micro-deformation and alignment deviation caused by internal stress are effectively eliminated.

The utility model discloses an anti-impact life jacket which comprises a life jacket assembly, the life jacket assembly comprises a life jacket body, leg fixing belts are symmetrically and fixedly arranged on one side of the bottom of the life jacket, first connecting back buckles are arranged on the outer sides of the leg fixing belts, and floating materials are filled in the life jacket body. According to the life jacket, the zipper head arranged on the life jacket body is fixed in the elastic fabric interlayer so as to prevent the problem of falling off, and the polyester meshes are formed in the life jacket, so that water can be quickly discharged, and the weight of the life jacket body is reduced; a nylon belt, a waist belt, a connecting back buckle and a self-rescue assembly are arranged on the chest portion and the waist portion of the life jacket body respectively, the zipper can be prevented from cracking, the triple protection effect is achieved, and the arranged self-rescue device can ensure that the self-rescue device cannot be decomposed before being opened and can be rapidly separated after being opened. Therefore, the life jacket not only has the beneficial effect of impact resistance, but also has better safety performance.

The present invention discloses a metal mesh printing plate and a preparation method thereof, wherein the metal mesh printing plate comprises a metal mesh and a polyester mesh, wherein a metal layer is provided in a non-graphic area on the metal mesh, and a graphic area is located in the non-graphic area; in the weft direction, the warp is removed by truncation at a position corresponding to the graphic area, and / or, in the warp direction, the weft is removed by truncation at a position corresponding to the graphic area, wherein the number of wefts / warps that have been truncation-processed is greater than or equal to 1. The present invention removes the warp / weft at a position corresponding to the graphic area by truncation, and the truncated warp / weft still has considerable strength at a position corresponding to the non-graphic area due to electroplating of a metal layer; in addition, reducing the shielding of the weft / warp on the printing area can make the ink leakage uniform and abundant, so that the printed graphics are clear and accurate, thereby improving the printing quality.

The utility model discloses a manufacturing tool for a forming bushing, which belongs to the technical field of manufacturing of printing bushings and comprises a square auxiliary outer frame, a plane support arranged on the upper plane of the auxiliary outer frame and a plurality of jackscrews arranged on the inner side of the auxiliary outer frame. The plane support comprises a stainless steel wire net and a polyester net which surrounds the stainless steel wire net and is fixedly connected with the stainless steel wire net. And the polyester net is fixedly connected with the auxiliary outer frame. According to the utility model, the problem that a bushing finished product droops during processing is solved, and the processing precision of the bushing finished product is ensured.

The invention relates to a solar printing screen manufacturing process. The solar printing screen manufacturing process comprises the following steps that S1, a basic polyester screen is manufactured; s2, the stainless steel gauze is installed on a straightness machine table, a PET film is laid on the stainless steel gauze, and the stainless steel gauze is cut; s3, the PET film is heated, the stainless steel gauze adheres to the polyester screen printing plate, and the composite area adheres to the printing screen printing plate through a binding agent; s4, the drawing machine scans the stainless steel gauze and generates a drawing D1 in the same direction as the warp of the stainless steel gauze; s5, the drawing D1 is covered with the main grid drawing on the drawing running machine, and a drawing D2 is generated; s6, the printing screen plate is installed on a wire drawing machine for wire drawing treatment; s7, pasting a PI film on the printing screen, pressing the PI film, sealing the edge of the PI film by using a photosensitive resist, and exposing the photosensitive resist; s8, the drawing machine combines the stainless steel gauze warp and the main grid drawing to generate a drawing D3; and S9, a laser drawing is manufactured through the drawing D3, and a product is manufactured through a printing machine. The method has the effect of improving the quality of the solar printing screen.

The invention relates to a preparation method of a composite material, which comprises the following steps: providing a preform consisting of continuous carbon fibers, arranging the carbon fibers in the preform in a single layer, and aligning the fibers through a polyester net and an adhesive; zirconium boride powder is mixed with silicon carbide and scandium oxide, the mixed powder is mixed with the dispersion liquid, and slurry is prepared through ball milling homogenization; the prefabricated bodies are laid in a mold layer by layer, the space between every two layers is soaked with the slurry so that the fiber surface can be evenly covered, the prefabricated bodies are stacked at the 0-degree configuration, and at least 30 layers are stacked to prepare a plate with the thickness being 3-3.5 mm; in a vacuumizing state, curing the plate at 80 DEG C for 2 hours to form a stable composite structure; controlling the sintering time and temperature gradient promotes densification of the composite structure but prevents formation of an interface layer.

A baseball style cap having a crown portion, a brim, and a sweatband is provided. The sweatband has a first polyester mesh fabric layer and a moisture activated cooling mesh fabric layer. The first polyester mesh fabric layer has a plurality of holes extending therethrough each having a first opening size. The moisture activated cooling mesh fabric layer is constructed of substantially 55% nylon yarn and substantially 45% polyester yarn. The crown portion has a second polyester mesh fabric layer and a third polyester mesh fabric layer. The second polyester mesh fabric layer has a plurality of holes extending therethrough with the first opening size. The third polyester mesh fabric layer has a plurality of holes extending therein having a second opening size smaller than the first opening size.

This invention relates to a method for preparing a composite material, comprising: providing a preform composed of continuous carbon fibers, wherein the carbon fibers in the preform are arranged in a single layer and the fibers are aligned by a polyester mesh and an adhesive; mixing zirconium boride powder with silicon carbide and scandium oxide, mixing the mixed powder with a dispersion, and homogenizing by ball milling to prepare a slurry; laying the preform layer by layer in a mold, and impregnating each layer with the slurry to uniformly cover the fiber surface, the preforms being stacked at 0° configuration, and at least 30 layers are stacked to prepare a plate with a thickness of 3–3.5 mm; curing the plate at 80°C for 2 hours under vacuum to form a stable composite structure; and controlling the sintering time and temperature gradient to promote densification of the composite structure but prevent the formation of an interface layer.

A scaffold for bone-tissue engineering includes a mesh and a coating on the mesh. The mesh includes a plurality of offset layers of filaments of polyester. The coating covers the mesh and includes magnesium hydroxide / copper oxide nanoparticles suspended in gelatin. A method of constructing the scaffold comprises combining magnesium hydroxide / copper oxide nanoparticles with a gelatin solution and coating a polyester mesh with the combined magnesium hydroxide / copper oxide nanoparticle and gelatin solution.

The utility model discloses an anti-burst high-strength resin tile and a mounting structure, which relate to the technical field of resin tiles and comprise an ASA (Acrylonitrile Styrene Acrylate) film, a first PVC (Polyvinyl Chloride) layer, a first polyester grid, a second PVC layer, a first auxiliary machine co-extrusion layer, a main machine co-extrusion layer, a second auxiliary machine co-extrusion layer, a third PVC layer, a second polyester grid, a fourth PVC layer and an arch, a first PVC layer, a first polyester mesh, a second PVC layer, a first auxiliary machine co-extrusion layer, a main machine co-extrusion layer, a second auxiliary machine co-extrusion layer, a third PVC layer and a second polyester mesh are sequentially connected between the ASA film and the fourth PVC layer from top to bottom, and the high-strength resin tile is in an arch shape. Due to the combination of the layer structures, the anti-burst high-strength resin tile has excellent performance, can adapt to various environmental conditions, and provides a reliable roof covering material for buildings; the ASA film has excellent weather resistance, can resist erosion of ultraviolet rays, temperature change and chemical substances for a long time, and keeps bright color and surface integrity.

The utility model discloses an extrusion device for polyester net monofilament production, which comprises an extrusion pipe, the top of the extrusion pipe is fixedly connected with a fixing frame, the top of the fixing frame is fixedly connected with a raw material box, the bottom of the raw material box is fixedly connected with a blanking pipe, the bottom of the blanking pipe is fixedly connected with a cylinder, and the cylinder is fixedly connected with a screw rod. The bottom of the cylinder is fixedly connected with a connecting pipe; and the quantifying assembly comprises a quantifying disc. According to the raw material crushing device, the crushing rod and the upper packing auger are driven by the stirring motor to rotate, so that raw materials in the raw material box can be crushed by the crushing rod, meanwhile, when the upper packing auger rotates, the raw materials in the raw material box can smoothly enter the discharging pipe, and the anti-blocking effect can be achieved; after raw materials enter the quantitative disc from the discharging pipe, the quantitative groove is filled with the raw materials, meanwhile, the quantitative disc is driven by the rotating motor to rotate, and the raw materials in the quantitative groove can evenly and equivalently enter the extrusion pipe.