A lightweight vacuum laser film and production process

Abstract

The present invention discloses a lightweight vacuum laser film and a production process, which relate to the technical field of laser films and include a base layer. The present invention uses a base layer, an adhesion enhancement layer, a vacuum metallized layer, a high-transmittance wear-resistant layer and an anti-ultraviolet layer to make a lightweight vacuum laser film, wherein the base layer made of a blend of nanocellulose and polylactic acid has lightness and high tensile strength, and the anti-ultraviolet layer is composited with fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin to form an intelligent anti-ultraviolet protective layer and provide a self-modification effect. The preparation of the base layer, coating of the adhesion enhancement layer, vacuum coating, hot pressing composite, coating of the anti-ultraviolet layer and slitting and packaging processes can be used to efficiently prepare the lightweight vacuum laser film. Moreover, in the preparation of the base layer, the combined functional device provided by the gravure coating equipment is used to meet the efficient aeration and mixing of the coating liquid and the recovery and enhancement of the penetration effect of the excess coating liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of laser films, and in particular to a lightweight vacuum laser film and a production process. Background Art

[0002] Laser film is a material that uses laser technology to form an optical thin film on the surface of the film. It has optical properties such as anti-reflection, reflection, and polarization. It usually adopts computer dot matrix lithography technology, 3D true color holography technology, multiple and dynamic imaging technology, etc., and transfers the holographic image with rainbow dynamic and three-dimensional stereoscopic effects to PET, BOPP, PVC or coated substrates through molding. Then, through lamination, hot stamping, transfer and other methods, a certain laser effect is obtained on the surface of the product packaging.

[0003] During the current production process of laser films, it is necessary to coat a release layer, adhesive layer or other functional reagents on the surface of the laser film according to different usage environments and requirements; the reagents to be coated are coated on the surface of the film through coating equipment to form the required coating on the surface of the film. During the coating process, it is necessary to ensure that the surface of the film is completely covered to achieve stable coating layer performance.

[0004] The existing application number is CN202310434492.4, which is a laser film surface coating equipment and laser film production process. The key points of its technical solution are: it includes a coating roller and a pressure roller, and the coating roller is pressed against the upper side of the coating roller to coat the film material that is passed around; the outer periphery of the coating roller is provided with a plurality of strip grooves, and the strip grooves are distributed along the length direction of the coating roller, and the bottom surface of the strip grooves is inclined toward one side for diverting the accumulated coating; the strip grooves are open at the end corresponding to the lower bottom surface, and an opening is formed at the end face of the coating roller. This invention can stably coat the surface of the film material, and form a groove structure through the inclined strip grooves, which is beneficial to the discharge of the coating liquid and helps to control the stability of the film material coating.

[0005] The above-mentioned existing coating equipment, during use, completes the coating process of the laser film by gravure coating. However, the gravure coating roller generally needs to be placed inside the material tank to drive the coating liquid to coat the laser film. The coating liquid inside the material tank has poor fluidity, making it more prone to uneven problems, resulting in uneven viscosity of the coating liquid used, affecting the quality of the coated product. Summary of the Invention

[0006] The purpose of the present invention is to provide a lightweight vacuum laser film and a production process to solve the problems raised in the above background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] In the first aspect, the present application proposes a lightweight vacuum laser film, comprising: a base layer, an adhesion enhancement layer, a vacuum-plated metal layer, a high-transmittance wear-resistant layer, and an anti-ultraviolet layer, wherein the adhesion enhancement layer is coated on the upper surface of the base layer, the vacuum-plated metal layer is magnetron sputtered on the upper surface of the adhesion enhancement layer, the high-transmittance wear-resistant layer is hot-pressed on the upper surface of the vacuum-plated metal layer, and the anti-ultraviolet layer is precision sprayed on the upper surface of the high-transmittance wear-resistant layer;

[0009] The base layer is made of a blend of nanocellulose and polylactic acid, with a thickness of 10-15 μm;

[0010] The adhesion enhancement layer is made of a composite material of bio-based polylactic acid and ethylene-vinyl acetate copolymer, with a thickness of 2-4 μm;

[0011] The vacuum-plated metal layer is formed by sputtering a copper-silver alloy with a thickness of 50-80 nm using magnetron sputtering technology;

[0012] The high-transmittance and wear-resistant layer is made of a composite of nano-silicon dioxide particles and polycarbonate materials;

[0013] Anti-ultraviolet layer: Made of one or more of fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin, with a thickness of 1-3μm.

[0014] Secondly, the present application also proposes a production process for a lightweight vacuum laser film, comprising the following steps:

[0015] S1. Substrate preparation: Pre-treat the substrate layer made of a blend of nanocellulose and polylactic acid to ensure a smooth and clean surface.

[0016] S2. Adhesion reinforcement layer coating: Use gravure coating equipment to evenly coat the bio-based composite material on the substrate layer. The coating speed is controlled at 25-35 m / min and the coating temperature is maintained at 55-65°C.

[0017] S3. Vacuum coating: In a vacuum chamber, the adhesion enhancement layer is coated by sputtering with a copper-silver target to form a vacuum-plated metal layer on the upper surface of the adhesion enhancement layer;

[0018] S4. Hot pressing composite: Through hot pressing process, the nano-composite polycarbonate material is tightly attached to the upper surface of the vacuum metallized layer. The hot pressing temperature is set to 160-180℃, the pressure is 2.5-3.5MPa, the holding time is 6-8 seconds, and the surface is hardened.

[0019] S5. Anti-ultraviolet layer coating: Using spraying technology, a coating composed of fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin is evenly coated on the surface of the high-transmittance wear-resistant layer. After drying, an anti-ultraviolet protection structure is formed, and the preparation of the lightweight vacuum laser film is completed;

[0020] S6. Slitting and packaging: slitting and rewinding the prepared lightweight vacuum laser film to the required size specifications and packaging.

[0021] Preferably, in step S1, the nanocellulose and polylactic acid are melt-blended in a ratio of 7:3, and a film is prepared by tape casting technology, with the temperature controlled at 160-180° C. and the pulling speed controlled at 8-10 m / min.

[0022] Preferably, the gravure coating equipment used in step S2 includes a bracket, a feed roller is rotatably installed on the upper end of the bracket, the right side of the bracket is connected to the coating box, a control cabinet is installed on the rear side of the coating box, guide rollers are arranged on both sides of the coating box, and a gravure roller is installed in the middle of the coating box, a material box is provided outside the gravure roller, a pressure roller is oppositely provided at the upper end of the gravure roller, and the pressure roller is connected to the lower end of the cylinder, and a combined functional device is installed at the lower end of the material box.

[0023] Preferably, the combined functional device includes a fixing frame, which is fixed at the lower end of the coating box, a mixing assembly is provided at the upper end of the fixing frame, and the mixing assembly partially extends into the interior of the material box, the lower end of the mixing assembly is connected to the exhaust end of the aerator, and the right side of the mixing assembly is connected to an extrusion assembly, and the extrusion assembly is connected to the right side of the material box.

[0024] Preferably, the mixing assembly includes a first motor, which is mounted on the outside of the upper end of the fixed frame, and the upper end of the first motor is connected to the first pulley set, the left side of the first pulley set is connected to the rotating drum, the outside of the rotating drum is connected to a jet shell, and the jet shell is connected to the lower end of the material box, a conduit is inserted into the inside of the rotating drum, the upper end of the rotating drum is provided with a first bevel gear, and the left side of the first bevel gear is meshed with the second bevel gear, the left side of the second bevel gear is connected to the jet head, and the jet head is installed on the left side of the upper end of the jet shell, and an intermittent structure is provided on the outside of the lower end of the jet shell;

[0025] The jet head further comprises an jet pipe, which is opened in the middle of the jet head and is internally provided with an electromagnetic valve, and is connected to the left side of the upper end of the conduit.

[0026] Preferably, the intermittent structure includes a first turntable, which is connected to the upper right end of the first pulley group and is at the top of the fixed frame. A swing arm is installed on the upper end of the first turntable, and a limiting groove is provided on the outside of the first turntable. A second turntable is provided on the left side of the first turntable, and the second turntable is connected to the outside of the jet shell. A first cam and a second cam are equidistantly provided on the upper end of the second turntable.

[0027] The transmission gear of said sliding arm is connected to the gear shift pin of said sliding arm, and said sliding arm is connected to the gear shift pin of said sliding arm by a threaded connection to said sliding arm.

[0028] Preferably, the stamping structure includes a first shaft body, which is connected to the upper end of the rotating disk, a connecting shaft is inserted into the upper end of the first shaft body, a connecting sleeve is installed on the outside of the connecting shaft, the upper end of the connecting shaft is connected to the second shaft body, and a sleeve is provided on the outside of the second shaft body, the top of the sleeve is connected to the stamping structure, the outer end of the sleeve is rotatably docked with a connecting arm, and the lower end of the connecting arm is connected to the side plate, and the side plate is fixed to the outside of the connecting sleeve.

[0029] Preferably, the extrusion structure includes a lifting frame, which is connected to the top of the sleeve, a convex plate is installed on the outside of the lifting frame, and the outer side of the convex plate is fixed to the protective shell, a guide plate is installed on the bottom of the convex plate, and a damper is installed on the upper end of the lifting frame, the lower end of the damper is connected to the docking frame, and a spring is provided on the outside of the telescopic end of the damper, and an auxiliary roller is rotatably installed on the lower end of the docking frame.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention uses a base layer, an adhesion reinforcement layer, a vacuum metallized layer, a high-transmittance wear-resistant layer and an anti-ultraviolet layer to make a lightweight vacuum laser film. Among them, the base layer made of a blend of nanocellulose and polylactic acid has light weight and high tensile strength, and the anti-ultraviolet layer is composited with fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin to form an intelligent anti-ultraviolet protective layer and provide a self-modification effect. The preparation of the base layer, coating of the adhesion reinforcement layer, vacuum plating, hot pressing compounding, coating of the anti-ultraviolet layer and slitting and packaging processes can be used to efficiently prepare the lightweight vacuum laser film. Moreover, in the preparation of the base layer, the combined functional device provided by the gravure coating equipment is used to meet the efficient aeration and mixing of the coating liquid and the recovery and enhancement of the penetration effect of the excess coating liquid.

[0032] The arrangement of the mixing assembly and the aerator, that is, the air generated by the aerator, can be transmitted to the inside of the conduit and discharged from the jet channel opened inside the nozzle along the conduit to achieve aeration and mixing of the coating liquid inside the material box, reducing the problem of coating liquid particles. The rotation of the drum can be achieved by driving the first pulley group, so that the drum can assist in achieving the meshing transmission of the first bevel gear and the second bevel gear. In this way, the nozzle docked on one side of the second bevel gear can achieve circular rotating aeration and improve the aeration and mixing effect.

[0033] The indirect structure is set up, that is, when the first pulley group rotates, the rotation of the first turntable can also be driven. In this way, the swing arm installed on the top of the first turntable can intermittently contact and transmit with the second cam provided on the outside of the second turntable through the rotation effect, so as to realize the intermittent rotation of the second turntable. At the same time, the limiting docking effect of the limiting groove opened on the outside of the first turntable and the second cam provided on the outside of the second turntable can ensure the stability of the intermittent rotation state of the second turntable. Therefore, as the second turntable intermittently rotates, the jet shell docked at the middle of the second turntable can realize intermittent adjustment of the jet position to ensure sufficient aeration and mixing inside the material box and avoid the occurrence of problems such as omission or insufficient mixing.

[0034] The setting of the extrusion assembly, that is, when the third bevel gear and the fourth bevel gear are engaged for transmission, the screw connected to the top of the fourth bevel gear can be rotated, so that the moving rod threadedly connected to the outside of the screw can be guided by the limit of the stabilizing frame to achieve stable up and down movement, thereby indirectly realizing the clamping of the coated laser film by the convex plate and the auxiliary roller set inside the extrusion structure, and through the adjustment effect, to meet the auxiliary extrusion activity of laser films of different thicknesses. When the laser film is clamped by the convex plate and the auxiliary roller, the excess coating liquid applied inside the laser film can be squeezed, thereby accelerating the subsequent drying efficiency and assisting in enhancing the penetration uniformity of the coating liquid.

[0035] The arrangement of the second pulley group and the stamping structure, that is, when the first pulley group is in a rotating state, the rotation of the second pulley group can be realized synchronously, thereby realizing the driving of the telescopic rods connected on both sides, and the rotating disk connected to the upper end of the telescopic rods on both sides can rotate synchronously to meet the driving of the first shaft body. However, when the first shaft body rotates, the connecting shaft installed at the upper end can be tilted, and the connection transmission effect of the second shaft body can be coordinated to make the connecting sleeve installed on the outside of the connecting shaft realize the rotation and swing of the external fixed side plate. Therefore, the connecting arm connected to the upper end of the side plate can meet the up and down movement of the upper end connecting sleeve through the swinging effect. In this way, the lifting frame as a whole can reciprocate and extrude the docking frame, so that the docking frame cooperates with the damper and the spring to increase the extrusion force of the auxiliary roller, thereby improving the extrusion efficiency of the excess coating liquid inside the coated laser film, and assisting and strengthening the subsequent drying and coating uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the lightweight vacuum laser film of the present invention;

[0037] Figure 2 This is a schematic diagram of the preparation process of the present invention;

[0038] Figure 3 This is a schematic structural diagram of the gravure coating equipment of the present invention;

[0039] Figure 4 This is a schematic diagram of the internal structure of the gravure coating device of the present invention;

[0040] Figure 5 This is a schematic diagram of the internal structure of the combined functional device of the present invention;

[0041] Figure 6 This is a schematic diagram of the internal structure of the mixing assembly of the present invention;

[0042] Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram;

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the intermittent structure of the present invention;

[0044] Figure 9 This is a schematic diagram of the internal structure of the extrusion assembly of the present invention;

[0045] Figure 10 This is a schematic diagram of the internal structure of the punching structure of the present invention;

[0046] Figure 11 This is a schematic diagram of the internal structure of the extruded structure of the present invention.

[0047] In the figure: base layer 100, adhesion enhancement layer 200, vacuum metallized layer 300, high light transmittance wear-resistant layer 400, anti-ultraviolet layer 500, bracket 1, feed roller 2, coating box 3, control cabinet 4, guide roller 5, gravure roller 6, material box 7, pressure roller 8, cylinder 9, combined functional device 10, fixed frame 101, mixing assembly 102, first motor 1021, first pulley assembly 1022, rotating Cylinder 1023, jet housing 1024, conduit 1025, first bevel gear 1026, second bevel gear 1027, jet head 1028, jet pipe 10281, solenoid valve 10282, intermittent structure 1029, first turntable 10291, swing arm 10292, limit slot 10293, second turntable 10294, first cam 10295, second cam 10296, aerator -103, extrusion assembly-104, connecting frame-1041, protective shell-1042, second motor-1043, third bevel gear-1044, fourth bevel gear-1045, limit seat-1046, screw-1047, moving rod-1048, stabilizing frame-1049, rotating disk-10410, telescopic rod-10411, second pulley assembly-10412, stamping structure-10413, first shaft-1041 31. Connecting shaft 104132, connecting sleeve 104133, second shaft 104134, sleeve 104135, connecting arm 104136, side plate 104137, extrusion structure 10414, lifting frame 104141, raised plate 104142, guide plate 104143, damper 104144, docking frame 104145, spring 104146, auxiliary roller 104147. DETAILED DESCRIPTION

[0048] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0049] Firstly, this application proposes a lightweight vacuum laser film, see Figure 1-Figure 2 , comprising: a base layer 100, an adhesion enhancing layer 200, a vacuum-deposited metal layer 300, a high-transmittance wear-resistant layer 400 and an anti-ultraviolet layer 500, wherein the adhesion enhancing layer 200 is coated on the upper surface of the base layer 100, the vacuum-deposited metal layer 300 is deposited on the upper surface of the adhesion enhancing layer 200 by magnetron sputtering, the high-transmittance wear-resistant layer 400 is hot-pressed on the upper surface of the vacuum-deposited metal layer 300, and the anti-ultraviolet layer 500 is coated on the upper surface of the high-transmittance wear-resistant layer 400 by precision spraying;

[0050] The base layer 100 is made of a blend of nanocellulose and polylactic acid, with a thickness of 10-15 μm. It is biodegradable and has a high tensile strength of ≥150 MPa. It is 40% lighter than traditional PET substrates, and its surface nanoporous structure can enhance interlayer bonding.

[0051] The adhesion enhancement layer 200 is made of a composite material of bio-based polylactic acid and ethylene-vinyl acetate copolymer, with a thickness of 2-4 μm. This layer not only improves the adhesion between the substrate and the vacuum-plated metal layer, but is also environmentally friendly and renewable, meeting the requirements of green production.

[0052] The vacuum metallization layer 300‌ is a copper-silver alloy sputtering film with a thickness of 50-80nm, formed using magnetron sputtering technology. Compared to traditional aluminum coatings, the alloy coating has a 15% higher reflectivity than pure aluminum and is more resistant to oxidation, while maintaining its lightweight advantages.

[0053] The high-transmittance wear-resistant layer 400‌ is made of nano-silica particles and polycarbonate through a special process. It has a hardness of over 4H and a transmittance of no less than 95%. The addition of nanoparticles greatly improves wear resistance and scratch resistance while maintaining high light transmittance.

[0054] Among them, the special process mainly includes the steps of material mixing and dispersion, melt extrusion, cast film forming, surface hardening treatment and cooling and shaping. The contents of these steps can be known from the existing technology and will not be described in detail.

[0055] Anti-UV layer 500‌: Made of a composite of one or more of fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin, with a thickness of 1-3μm, it forms an intelligent anti-UV protective layer and provides dynamic UV protection. The mixture of fluorosilicone resin and polyurethane resin achieves a balance between UV protection, self-healing efficiency, and mechanical properties. This allows for real-time adjustment of the UV blocking rate through a photochromic response, while also enabling self-healing of microcracks through dynamic bonding.

[0056] Specifically, the base layer 100 made of a blend of nanocellulose and polylactic acid is 40% lighter than traditional PET. While having high tensile strength, it is also biodegradable to achieve lightweight and high strength. At the same time, the reflectivity of the copper-silver alloy coating is 15% higher than that of pure aluminum. The high-transmittance and wear-resistant layer has a transmittance of ≥95% and a hardness of 4H. The anti-ultraviolet layer 500 is compounded by fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin, which can achieve dynamic UV blocking, 80%-95% adjustment range and self-repair function.

[0057] Secondly, the present application also proposes a production process for a lightweight vacuum laser film, comprising the following steps:

[0058] S1. Substrate preparation: Pre-treat the substrate layer made of a blend of nanocellulose and polylactic acid to ensure a smooth and clean surface, providing a good foundation for subsequent coating.

[0059] S2. Adhesion enhancement layer coating: The bio-based composite material is evenly coated on the substrate layer using a gravure coating device. The coating speed is controlled at 25-35 m / min and the coating temperature is maintained at 55-65°C to ensure uniformity and adhesion of the coating.

[0060] S3. Vacuum coating: In a vacuum chamber, the adhesion enhancement layer is coated with a copper-silver target by sputtering, and a vacuum-plated metal layer is formed on the upper surface of the adhesion enhancement layer. The coating rate is 0.3-0.5nm / s, which can give the laser film excellent reflective properties and metallic luster;

[0061] S4. Hot pressing composite: Through the hot pressing process, the nano-composite polycarbonate material is tightly attached to the upper surface of the vacuum metallized layer. The hot pressing temperature is set to 160-180°C, the pressure is 2.5-3.5MPa, and the holding time is 6-8 seconds. The surface is hardened to improve the wear resistance and hardness of the prepared laser film. Secondly, after hot pressing, additional cooling and shaping treatment is required. The temperature is lowered to below 40°C by the cooling roller to ensure that the nano-composite polycarbonate material is tightly attached to the vacuum metallized layer, thereby improving the overall stability and durability.

[0062] S5. Anti-ultraviolet layer coating: Using spraying technology, a coating composed of fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin is evenly coated on the surface of the high-transmittance wear-resistant layer. After drying, an anti-ultraviolet protection structure is formed, and the preparation of the lightweight vacuum laser film is completed;

[0063] S6. Slitting and packaging: slitting and rewinding the prepared lightweight vacuum laser film to the required size specifications and packaging.

[0064] In step S1, nanocellulose and polylactic acid are melt-blended in a ratio of 7:3, and film-forming is performed by tape casting technology, with the temperature controlled at 160-180° C. and the pulling speed controlled at 8-10 m / min.

[0065] See also Figure 3-Figure 4The gravure coating equipment used in step S2 of this embodiment includes a bracket 1, a feed roller 2 is rotatably installed on the upper end of the bracket 1, the right side of the bracket 1 is connected to the coating box 3, a control cabinet 4 is installed on the rear side of the coating box 3, four guide rollers 5 are arranged on both sides of the inside of the coating box 3, and a gravure roller 6 is installed in the middle of the coating box 3, and a liquid inlet end and a material outlet end are respectively provided on the left side and the left bottom of the coating box 3, a material box 7 is provided outside the gravure roller 6, a pressure roller 8 is provided opposite to the upper end of the gravure roller 6, and the pressure roller 8 is connected to the lower end of the cylinder 9, and a combined functional device 10 is installed at the lower end of the material box 7.

[0066] Specifically, the material is transferred to the inside of the coating box 3 through the feed roller 2. At this time, the material is pre-transferred from the upper end of the first guide roller 5 to the lower end of the second guide roller 5, and is transferred along the second guide roller 5 to the gravure roller 6, the third guide roller 5 and the upper end of the third guide roller 5 to complete the arrangement of the material. When the gravure roller 6 is rotated by the control cabinet 4, the paint inside the material box 7 can be brought out to be coated with the transferred material. At the same time, the upper end of the gravure roller 6 is relative to the pressure roller 8, and can be driven by the cylinder 9 to extrude the transferred coated material to improve the overall coating quality. The coated material can be transferred from the right opening of the coating box 3 to the next workstation for subsequent processing.

[0067] See also Figure 5 The combined functional device 10 in this embodiment includes a fixing frame 101, which is fixed at the lower end of the coating box 3. A mixing component 102 is provided at the upper end of the fixing frame 101, and the upper half of the mixing component 102 extends into the interior of the material box 7. The lower end of the mixing component 102 is connected to the exhaust end of the aerator 103, and the right side of the mixing component 102 is connected to the extrusion component 104, and the extrusion component 104 is connected to the right side of the material box 7.

[0068] Among them, the aerator 103 is consistent with the existing aeration equipment, and therefore, it is not described in detail in this application. At the same time, the external exhaust end of the aerator 103 and the bottom docking end of the mixing assembly 102 are in a rotating docking state.

[0069] See also Figure 6-Figure 8The mixing assembly 102 in this embodiment includes a first motor 1021, which is mounted on the outside of the upper end of the fixed frame 101, and the upper end of the first motor 1021 is connected to the first pulley set 1022. The left side of the first pulley set 1022 is connected to the rotating drum 1023, and the rotating drum 1023 is vertically rotated and docked with the left side of the upper end of the fixed frame 101. The outer side of the rotating drum 1023 is docked with an injection shell 1024, and the injection shell 1024 extends into the lower end of the material box 7 and is connected. A conduit 1025 is inserted into the interior of the rotating drum 1023, and the conduit 1025 is connected to the inner side of the rotating drum 1023. The overall configuration is L-shaped tubular, and the bottom of the conduit 1025 is connected to the external exhaust end of the aerator 103. A first bevel gear 1026 is provided at the upper end of the drum 1023, and the left side of the first bevel gear 1026 is meshed with the second bevel gear 1027. The left side of the second bevel gear 1027 is connected to the jet head 1028, and the jet head 1028 is installed on the left side of the upper end of the jet housing 1024. That is, when the second bevel gear 1027 is in a rotating state, the rotation of the jet head 1028 can be realized synchronously. An intermittent structure 1029 is provided on the outer side of the lower end of the jet housing 1024.

[0070] Among them, the jet head 1028 also includes a jet pipe 10281, which is opened in the middle of the jet head 1028, and an electromagnetic valve 10282 is installed inside the jet pipe 10281. The jet pipe 10281 is connected to the left side of the upper end of the conduit 1025, and the jet pipe 10281 is arranged in a Y-shaped pipe shape as a whole. At the same time, the aperture of the jet pipe 10281 gradually decreases from the inside to the outside. In this way, the exhaust speed can be accelerated and the aeration mixing effect can be improved.

[0071] Among them, the intermittent structure 1029 includes a first turntable 10291, the first turntable 10291 is connected to the upper end of the right side of the first pulley group 1022, and the first turntable 10291 is at the top of the fixed frame 101, the upper end of the first turntable 10291 is equipped with a swing arm 10292, and the first turntable 10291 is provided with a limiting groove 10293 on the outside, and the left side of the first turntable 10291 is opposite to the second turntable 10294, and the second turntable 10294 is connected to the jet shell. 1024 is connected to the outside, so that the intermittent rotation of the jet shell 1024 can be achieved. The first convex shaft 10295 and the second convex shaft 10296 are equidistantly provided on the upper end of the second turntable 10294, and the number of the first convex shaft 10295 and the second convex shaft 10296 is consistent, both are eight, and the diameter of the first convex shaft 10295 is consistent with the limiting groove 10293, and the second convex shaft 10296 can be intermittently transmitted with the outside of the swing arm 10292.

[0072] Specifically, by running the first motor 1021, the rotation of the first pulley group 1022 connected to the top can be achieved. As the first pulley group 1022 rotates, the rotating drum 1023 connected to the left side of the first pulley group 1022 can rotate synchronously, thereby transmitting the first bevel gear 1026 and the second bevel gear 1027 meshed at the upper end. As a result, when the second bevel gear 1027 is in a rotating state, the synchronous rotation of the nozzle head 1028 connected to the left side can be achieved. At this time, through the action of the aerator 103, air can be introduced into the inside of the conduit 1025 and then transmitted along the conduit 1025 to the nozzle head 1028 in a rotating state. The exhaust of the nozzle pipe 10281 opened inside can make the air be quickly discharged due to the internal shape and structure of the nozzle pipe 10281. In this way, the nozzle head 1028 can meet the requirements of the rotational efficient aeration mixing process, so that the mixing quality of the coating liquid in the material box 7 is significantly improved, and the subsequent coating quality is enhanced.

[0073] At the same time, when the first pulley assembly 1022 is in a rotating state, the first turntable 10291 installed on the top of the fixed frame 101 can also be driven to rotate, so that the swing arm 10292 installed on the top of the first turntable 10291 will push the second convex shaft 10296 provided on the upper end of the second turntable 10294 to meet the intermittent rotation of the second turntable 10294. As the second turntable 10294 rotates intermittently, the jet housing 102 connected to the middle of the second turntable 10294 4. It can rotate synchronously and intermittently to automatically adjust its aeration and mixing position, further improving the mixing quality of the coating liquid inside the material box 7. At the same time, when the second turntable 10294 rotates intermittently, the first protruding shaft 10295 provided at another location outside the second turntable 10294 can be correspondingly engaged with the limiting groove 10293 provided on the outside of the first turntable 10291 to achieve intermittent adjustment and locking cooperation, so that the air injection housing 1024 can be in a stable state after intermittent adjustment, avoiding the occurrence of self-drift problems;

[0074] At the same time, when there is no need to perform aeration and mixing activities, the jet pipe 10281 can be automatically closed by the solenoid valve 10282 installed inside the jet pipe 10281 to avoid the problem of coating liquid intrusion.

[0075] See also Figures 9-11, the extrusion assembly 104 in this embodiment includes a connecting frame 1041, the upper end of the connecting frame 1041 is fixed to the protective shell 1042, and the protective shell 1042 is installed on the right side of the material box 7, and a second motor 1043 is provided on the left side of the connecting frame 1041, and the right side of the second motor 1043 is connected to the third bevel gear 1044, and the upper end of the third bevel gear 1044 is meshed with the fourth bevel gear 1045, and a limiting seat 1046 is fixed on the upper end of the connecting frame 1041, and a screw 1047 is installed on the upper end of the fourth bevel gear 1045 to be vertically docked, and the screw 1047 is inserted into the middle of the limiting seat 1046, and the outer side of the upper end of the screw 1047 is threadedly docked with a moving rod 1048, and the outer side of the moving rod 1048 is docked with a stabilizing frame 1049, and the moving rod 1048 is arranged in a rectangular rod shape as a whole, so as to vertically limit and slide dock with the middle part of the upper end of the stabilizing frame 1049, stabilizing frame 1049 The bottom is fixed to the limit seat 1046, the top of the moving rod 1048 is rotatably connected to the rotating disk 10410, and the lower ends of the left and right sides of the rotating disk 10410 are connected to the telescopic rod 10411, and the bottoms of the telescopic rods 10411 on both sides are connected to the upper ends of the second pulley group 10412, which can rotate with the second pulley group 10412 to achieve synchronous rotation. The right side of the second pulley group 10412 is connected to the outer end of the limit seat 1046, and the left side of the second pulley group 10412 is correspondingly connected to the upper end of the first pulley group 1022, that is, when the first pulley group 1022 is in a rotating state, the rotation of the second pulley group 10412 can be synchronously realized. A stamping structure 10413 is provided in the middle of the upper end of the rotating disk 10410, and the top of the stamping structure 10413 is connected to the extrusion structure 10414, and the extrusion structure 10414 is installed on the upper end of the protective shell 1042.

[0076] The stamping structure 10413 includes a first shaft 104131, which is connected to the upper end of the rotating disk 10410. The upper end of the first shaft 104131 is obliquely plugged with a connecting shaft 104132, and a connecting sleeve 104133 is installed on the outside of the connecting shaft 104132. The upper end of the connecting shaft 104132 is connected to the second shaft 104134, and the second shaft 104134 is covered with a sleeve 104135. , and the second shaft body 104134 is arranged in an inclined direction to the outside of the first shaft body 104131, the top of the sleeve 104135 is connected to the stamping structure 10413, the left side of the sleeve 104135 is rotated and docked with a connecting arm 104136, and the lower end of the connecting arm 104136 is connected to the side plate 104137, and the bottom of the connecting arm 104136 is arranged in a smooth spherical shape, and the side plate 104137 is fixed to the outside of the connecting sleeve 104133.

[0077] Among them, the extrusion structure 10414 includes a lifting frame 104141, the lifting frame 104141 is connected to the top of the sleeve 104135, and the four corners of the bottom of the lifting frame 104141 are connected to the bottom of the protective shell 1042 through the telescopic part. A convex plate 104142 is installed on the outside of the lifting frame 104141, and the outer side of the convex plate 104142 is fixed to the protective shell 1042. In this way, the convex plate 104142 will be in a fixed state, and the lifting frame 104141 can be moved along the convex plate 104142 is lifted up and down, and a guide plate 104143 is installed at an angle at the bottom of the convex plate 104142, and the left side of the guide plate 104143 extends into the interior of the material box 7. A damper 104144 is installed at the upper end of the lifting frame 104141, and the lower end of the damper 104144 is connected to the docking frame 104145, and a spring 104146 is provided on the outside of the telescopic end of the damper 104144, and an auxiliary roller 104147 is rotatably installed at the lower end of the docking frame 104145.

[0078] Specifically, when the coating activity of the laser film is completed, in order to speed up the subsequent drying efficiency, the excess coating liquid applied can be cleaned up, and the second motor 1043 provided on the left side of the connecting frame 1041 can be operated to enable the second motor 1043 to realize the meshing transmission of the third bevel gear 1044 and the fourth bevel gear 1045. As the fourth bevel gear 1045 rotates, the screw 1047 connected to the upper end of the fourth bevel gear 1045 can meet the up and down movement of the externally threaded movable rod 1048, so that the movable rod 1048 cooperates with the vertical rotation of the externally connected stable frame 1049. The rotating disk 10410 connected to the upper end of the movable rod 1048 can indirectly realize the downward movement of the top lifting frame 104141. As the lifting frame 104141 moves downward, the auxiliary roller 104147 can be synchronously moved downward to meet the needs of the auxiliary roller 104147 and the convex plate 104142 to complete the clamping of the coated laser film. Through the clamping cooperation between the auxiliary roller 104147 and the convex plate 104142, the excess coating liquid inside the coated laser film can be discharged and the coating liquid can be squeezed into the interior of the laser film, thereby improving the coating quality.

[0079] When the first pulley group 1022 is in a rotating activity, the rotation of the second pulley group 10412 connected to the upper end can be realized synchronously, and as the second pulley group 10412 rotates, the rotation of the telescopic rods 10411 connected to the left and right sides of the upper end can be driven to rotate, thereby satisfying the rotation drive of the rotating disk 10410 connected to the top, and when the rotating disk 10410 is in a rotating state, the first shaft body 104131 connected to the middle part of the upper end of the rotating disk 10410 can rotate synchronously, and the rotating first shaft body 104131 can meet the rotation and swing of the connecting sleeve 104133 connected to the outside of the connecting shaft 104132 through the connection cooperation of the inclined connecting shaft 104132 and the second shaft body 104134 connected to the upper end of the connecting shaft 104132, that is, the connecting sleeve 104133 can meet the rotation and swing of the connecting sleeve 104133 The external side plate 104137 swings back and forth, and as the side plate 104137 swings back and forth, the sleeve 104135 connected and assembled via the connecting arm 104136 can move back and forth accordingly. As a result, the lifting frame 104141 that has completed the lifting and lowering adjustment can perform a reciprocating downward pressing movement. That is, when the lifting frame 104141 is pressed back and forth, the damper 104144 and the spring 104146 provided at the upper end of the lifting frame 104141 cooperate to enable the docking frame 104145 to increase the squeezing effect on the auxiliary roller 104147. In this way, the auxiliary roller 104147 can increase its squeezing force, effectively combining with the convex plate 104142 to discharge excess coating liquid from the coated laser film, accelerate subsequent drying efficiency, improve the coating penetration effect, and enhance coating quality and uniformity.

[0080] The excess coating liquid squeezed out can be returned to the material box 7 through the guide plate 104143 provided at the lower end of the convex plate 104142, ensuring the recycling and reuse of resources.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lightweight vacuum laser film, characterized by: The lightweight vacuum laser film comprises, from bottom to top, a base layer (100), an adhesion enhancement layer (200), a vacuum-plated metal layer (300), a high-transmittance wear-resistant layer (400) and an anti-ultraviolet layer (500), wherein the adhesion enhancement layer (200) is coated on the upper surface of the base layer (100), the vacuum-plated metal layer (300) is coated on the upper surface of the adhesion enhancement layer (200) by magnetron sputtering, the high-transmittance wear-resistant layer (400) is hot-pressed on the upper surface of the vacuum-plated metal layer (300), and the anti-ultraviolet layer (500) is coated on the upper surface of the high-transmittance wear-resistant layer (400) by precision spraying; The base layer (100) is made of a blend of nanocellulose and polylactic acid, and has a thickness of 10-15 μm; The adhesion enhancement layer (200) is made of a composite material of bio-based polylactic acid and ethylene-vinyl acetate copolymer, and has a thickness of 2-4 μm; The vacuum-plated metal layer (300) is a copper-silver alloy sputtering film with a thickness of 50-80 nm, formed by magnetron sputtering technology; The high light transmittance and wear-resistant layer (400) is formed by compounding nano-silicon dioxide particles and polycarbonate materials; The anti-ultraviolet layer (500) is a composite of one or more of fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin, with a thickness of 1-3 μm.

2. A production process of a lightweight vacuum laser film, according to claim 1, characterized in that: The steps include: S1. Substrate preparation: Pre-treat the substrate layer made of a blend of nanocellulose and polylactic acid to ensure a smooth and clean surface. S2. Adhesion reinforcement layer coating: Use gravure coating equipment to evenly coat the bio-based composite material on the substrate layer. The coating speed is controlled at 25-35 m / min and the coating temperature is maintained at 55-65°C. S3. Vacuum coating: In a vacuum chamber, the adhesion enhancement layer is coated by sputtering with a copper-silver target to form a vacuum-plated metal layer on the upper surface of the adhesion enhancement layer; S4. Hot pressing composite: Through hot pressing process, the nano-composite polycarbonate material is tightly attached to the upper surface of the vacuum metallized layer. The hot pressing temperature is set to 160-180℃, the pressure is 2.5-3.5MPa, the holding time is 6-8 seconds, and the surface is hardened. S5. Anti-ultraviolet layer coating: Using spraying technology, a coating composed of fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin is evenly coated on the surface of the high-transmittance wear-resistant layer. After drying, an anti-ultraviolet protection structure is formed, and the preparation of the lightweight vacuum laser film is completed; S6. Slitting and packaging: slitting and rewinding the prepared lightweight vacuum laser film to the required size specifications and packaging.

3. The production process of a lightweight vacuum laser film according to claim 2, characterized in that: In the step S1, nanocellulose and polylactic acid are melt-blended in a ratio of 7:3, and a film is prepared by a tape casting technique, with the temperature controlled at 160-180° C. and the pulling speed controlled at 8-10 m / min.

4. The production process of a lightweight vacuum laser film according to claim 2, characterized in that: The gravure coating equipment used in step S2 includes a bracket (1), a feed roller (2) is rotatably installed on the upper end of the bracket (1), the right side of the bracket (1) is connected to the coating box (3), a control cabinet (4) is installed on the rear side of the coating box (3), guide rollers (5) are arranged on both sides of the coating box (3), and a gravure roller (6) is installed in the middle of the coating box (3), a material box (7) is provided outside the gravure roller (6), a pressure roller (8) is oppositely provided at the upper end of the gravure roller (6), and the pressure roller (8) is connected to the lower end of the cylinder (9), and a combined functional device (10) is installed at the lower end of the material box (7).

5. The production process of a lightweight vacuum laser film according to claim 4, characterized in that: The combined functional device (10) includes a fixing frame (101), the fixing frame (101) is fixed at the lower end of the coating box (3), the upper end of the fixing frame (101) is provided with a mixing assembly (102), and the mixing assembly (102) partially extends into the interior of the material box (7), the lower end of the mixing assembly (102) is connected to the exhaust end of the aerator (103), the right side of the mixing assembly (102) is connected to the extrusion assembly (104), and the extrusion assembly (104) is connected to the right side of the material box (7).

6. The production process of a lightweight vacuum laser film according to claim 5, characterized in that: The mixing assembly (102) includes a first motor (1021), the first motor (1021) is mounted on the outside of the upper end of the fixed frame (101), and the upper end of the first motor (1021) is connected to the first pulley set (1022), the left side of the first pulley set (1022) is connected to the rotating drum (1023), the outside of the rotating drum (1023) is connected to the jet shell (1024), and the jet shell (1024) is connected to the lower end of the inner side of the material box (7), and the rotating drum (1023) is connected to the upper end of the first pulley set (1022). A conduit (1025) is inserted into the cylinder (1023). A first bevel gear (1026) is provided at the upper end of the rotating cylinder (1023). The left side of the first bevel gear (1026) is meshed with a second bevel gear (1027). The left side of the second bevel gear (1027) is connected to a jet head (1028). The jet head (1028) is installed on the left side of the upper end of the jet shell (1024). An intermittent structure (1029) is provided on the outer side of the lower end of the jet shell (1024). The jet head (1028) further comprises a jet pipe (10281), which is opened in the middle of the jet head (1028), and a solenoid valve (10282) is installed inside the jet pipe (10281), and the jet pipe (10281) is connected to the left side of the upper end of the conduit (1025).

7. The production process of a lightweight vacuum laser film according to claim 6, characterized in that: The intermittent structure (1029) includes a first turntable (10291), the first turntable (10291) is connected to the upper end of the right side of the first pulley group (1022), and the first turntable (10291) is located at the top of the fixed frame (101), a swing arm (10292) is installed on the upper end of the first turntable (10291), and a limiting groove (10293) is provided on the outside of the first turntable (10291), a second turntable (10294) is provided on the left side of the first turntable (10291), and the second turntable (10294) is connected to the outside of the jet shell (1024), and a first convex shaft (10295) and a second convex shaft (10296) are equidistantly provided on the upper end of the second turntable (10294).

8. The production process of a lightweight vacuum laser film according to claim 6, characterized in that: The extrusion assembly (104) includes a connecting frame (1041), the upper end of the connecting frame (1041) is fixed to the protective shell (1042), and the protective shell (1042) is installed on the right side of the material box (7), the left side of the connecting frame (1041) is provided with a second motor (1043), the right side of the second motor (1043) is connected to the third bevel gear (1044), the upper end of the third bevel gear (1044) is meshed with the fourth bevel gear (1045), the upper end of the connecting frame (1041) is fixed with a limit seat (1046), the upper end of the fourth bevel gear (1045) is installed with a screw (1047), and the screw (1047) is inserted into the middle of the limit seat (1046), the upper end of the screw (1047) is threadedly connected to a moving rod (1048), and the outer side of the moving rod (1048) is connected to a stabilizing frame ( 1049), the bottom of the stabilizing frame (1049) is fixed to the limiting seat (1046), the top of the moving rod (1048) is rotatably connected to the rotating disk (10410), and the two sides of the rotating disk (10410) are connected to the telescopic rod (10411), the bottom of the telescopic rod (10411) is connected to the upper end of the second pulley group (10412), one side of the second pulley group (10412) is connected to the outer side of the limiting seat (1046), and the other side of the second pulley group (10412) is connected to the upper end of the first pulley group (1022), a stamping structure (10413) is provided in the middle of the upper end of the rotating disk (10410), and the top of the stamping structure (10413) is connected to the extrusion structure (10414), and the extrusion structure (10414) is installed on the upper end of the protective shell (1042).

9. The production process of a lightweight vacuum laser film according to claim 8, characterized in that: The stamping structure (10413) includes a first shaft (104131), the first shaft (104131) is connected to the upper end of the rotating disk (10410), a connecting shaft (104132) is inserted into the upper end of the first shaft (104131), a connecting sleeve (104133) is installed on the outside of the connecting shaft (104132), and the upper end of the connecting shaft (104132) is connected to the second shaft (104134). The second shaft body (104134) is externally sleeved with a sleeve (104135), the top of the sleeve (104135) is connected to the stamping structure (10413), the outer end of the sleeve (104135) is rotatably docked with a connecting arm (104136), and the lower end of the connecting arm (104136) is connected to the side plate (104137), and the side plate (104137) is fixedly arranged on the outside of the connecting sleeve (104133).

10. The production process of a lightweight vacuum laser film according to claim 9, characterized in that: The extrusion structure (10414) includes a lifting frame (104141), the lifting frame (104141) is connected to the top of the sleeve (104135), a convex plate (104142) is installed on the outside of the lifting frame (104141), and the outer side of the convex plate (104142 is fixed to the protective shell (1042), and a guide plate (104143) is installed on the bottom of the convex plate (104142), a damper (104144) is installed on the upper end of the lifting frame (104141), the lower end of the damper (104144) is connected to the docking frame (104145), and a spring (104146) is installed on the outside of the telescopic end of the damper (104144), and an auxiliary roller (104147) is rotatably installed on the lower end of the docking frame (104145).

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