Light vacuum laser film and production process

Abstract

The invention discloses a light vacuum laser film and a production process, and relates to the technical field of laser films. The light vacuum laser film is prepared from the substrate layer, the adhesion enhancement layer, the vacuum plating metal layer, the high-light-transmittance wear-resistant layer and the anti-ultraviolet layer, the substrate layer prepared by blending the nano cellulose and the polylactic acid has light weight and high tensile strength, and the anti-ultraviolet layer is prepared by compounding fluorosilicone resin, polyurethane resin and photochromic fluorocarbon resin, so that the light vacuum laser film is prepared. According to the light vacuum laser film, an intelligent anti-ultraviolet protective layer can be formed, the self-modification effect is provided, efficient preparation of the light vacuum laser film can be carried out through the arrangement of base material layer preparation, adhesion enhancement layer coating, vacuum plating, hot-pressing compounding, anti-ultraviolet layer coating and slitting packaging processes, and in addition, the light vacuum laser film has the advantages that the production cost is reduced, and the production efficiency is improved. In the preparation of the base material layer, a combined function device arranged on the gravure coating equipment is used for meeting the requirements of high-efficiency aeration mixing of coating liquid, recycling of redundant coating liquid and enhancement of the permeation effect.

Description

Technical Field

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

[0002] A laser film is a material that uses laser technology to form an optical thin film on the surface of a thin film, and has optical properties such as antireflection, reflection, and polarization. It usually adopts computer dot lithography technology, 3D true color holography technology, multiple and dynamic imaging technology, etc. Through embossing, a holographic image with a rainbow dynamic and three-dimensional effect is transferred to a PET, BOPP, PVC or coated substrate, and then by means of lamination, hot stamping, transfer, etc., a certain laser effect is obtained on the surface of the product packaging.

[0003] Currently, in the production process of laser films, according to different usage environments and requirements, a release layer, an adhesive layer or other functional reagents need to be coated on the surface of the laser film; the reagents to be coated are processed by a coating device on the surface of the film body 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 body is completely covered to achieve the performance of a stable coating layer.

[0004] For an existing laser film surface coating device and a laser film production process with the application number CN202310434492.4, the key points of its technical solution are: including a coating roller and a pressing roller, the coating roller is pressed against the upper side of the coating roller to coat the wound film material; a plurality of strip-shaped grooves are formed on the outer circumference of the coating roller, the strip-shaped grooves are distributed along the length direction of the coating roller, and the bottom surface of the strip-shaped groove is inclined towards one side for guiding the accumulation of the coating; the strip-shaped groove corresponds to the lower end of the bottom surface and is open, forming an opening at the end face position of the coating roller. This invention can stably coat the surface of the film material, and form a groove structure through the inclined strip-shaped grooves, which is conducive to the discharge of the corresponding coating liquid material and helps to control the coating stability of the film material.

[0005] In the use process of the above existing coating device, the coating process of the laser film is completed by the intaglio coating method. However, the intaglio coating roller generally needs to be placed inside the material tank to drive the coating liquid for the coating activity of the laser film. The coating liquid inside the material tank has poor fluidity, making it prone to uneven problems, resulting in uneven viscosity of the coating liquid used and 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 thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present application proposes a lightweight vacuum laser film, comprising: a base layer, an adhesion enhancement layer, a vacuum metal plating layer, a high light transmittance and wear-resistant layer, and an anti-ultraviolet layer. The adhesion enhancement layer is coated on the upper surface of the base layer. The vacuum metal plating layer is magnetron sputtered on the upper surface of the adhesion enhancement layer. The high light transmittance and wear-resistant layer is hot-pressed on the upper surface of the vacuum metal plating layer. The anti-ultraviolet layer is precisely sprayed and coated on the upper surface of the high light transmittance and 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 metal plating layer is sputtered with a copper-silver alloy film, with a thickness of 50 - 80 nm, formed by magnetron sputtering technology;

[0012] The high light transmittance and wear-resistant layer is formed by compounding nanosilica particles and polycarbonate materials;

[0013] The anti-ultraviolet layer: is made by compounding one or more of fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin, with a thickness of 1 - 3 μm.

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

[0015] S1. Substrate layer preparation: The substrate layer made of a blend of nanocellulose and polylactic acid is precisely pre-treated to ensure its surface is flat and clean;

[0016] S2. Adhesion enhancement layer coating: Through a gravure coating device, the bio-based composite material is evenly coated on the substrate layer, with the coating speed controlled at 25 - 35 m / min and the coating temperature maintained at 55 - 65 °C;

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

[0018] S4. Hot pressing and compounding: Through a hot pressing forming process, the nano-composite polycarbonate material is tightly bonded to the upper surface of the vacuum metal plating layer. The hot pressing temperature is set at 160 - 180 °C, the pressure is 2.5 - 3.5 MPa, the holding time is 6 - 8 seconds, and surface hardening treatment is carried out;

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

[0020] S6. Slitting and packaging: The prepared lightweight vacuum laser film is slit and rewound to the required size specifications and then encapsulated.

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

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

[0023] Preferably, the combined functional device includes a fixing frame fixed at the lower end inside the coating box. A mixing component is arranged at the upper end of the fixing frame, and part of the mixing component extends into the material box. The lower end of the mixing component is opposite to the exhaust end of an aerator. The right side of the mixing component is connected to an extrusion component, and the extrusion component is connected to the right side of the material box.

[0024] Preferably, the mixing component includes a first motor installed outside the upper end of the fixing frame. The upper end of the first motor is connected to a first pulley group. The left side of the first pulley group is connected to a rotating cylinder. A jet shell is connected to the outside of the rotating cylinder and is connected to the lower end inside the material box. A conduit is inserted into the rotating cylinder. A first bevel gear is arranged at the upper end of the rotating cylinder, and the left side of the first bevel gear meshes with a second bevel gear. The left side of the second bevel gear is opposite to a jet head, and the jet head is installed on the left side of the upper end of the jet shell. An intermittent structure is arranged outside the lower end of the jet shell;

[0025] The jet head also includes a jet pipe opened in the middle of the jet head, and an electromagnetic valve is installed inside the jet pipe. The jet pipe 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 located at the top of the fixed frame. An oscillating arm is installed on the upper end of the first turntable, and a limiting groove is formed on the outside of the first turntable. A second turntable is provided opposite to the left side of the first turntable, and the second turntable is connected to the outside of the air jet housing. First convex shafts and second convex shafts are respectively equidistantly arranged on the upper end of the second turntable.

[0027] Preferably, the extrusion assembly includes a connecting frame, the upper end of the connecting frame is fixed to the protective housing, and the protective housing is installed on the right side of the material box. A second motor is provided on the left side of the connecting frame, the right side of the second motor is connected to a third bevel gear, the third bevel gear is meshed and connected with a fourth bevel gear at the upper end. A limiting seat is fixedly arranged at the upper end of the connecting frame, a screw rod is installed at the upper end of the fourth bevel gear and the screw rod is inserted into the middle of the limiting seat. A moving rod is threadedly connected to the upper end of the screw rod, and a stabilizing frame is connected to the outside of the moving rod. The bottom of the stabilizing frame is fixed to the limiting seat, the top of the moving rod is rotatably connected to a rotating disk, and both sides of the rotating disk are connected to telescopic rods. The bottom of the telescopic rods is connected to the upper end of the second pulley group relatively. One side of the second pulley group is connected to the outside of the limiting seat, and the other side of the second pulley group is correspondingly connected to the upper end of the first pulley group. A stamping structure is arranged in the middle of the upper end of the rotating disk, and the top of the stamping structure is connected to an extrusion structure. The extrusion structure is installed on the upper end of the protective housing.

[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 a second shaft body, and a sleeve is sleeved on the outside of the second shaft body. The top of the sleeve is connected to the stamping structure. A connecting arm is rotatably connected to the outer end of the sleeve, and the lower end of the connecting arm is connected to a side plate. The side plate is fixedly arranged on 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 housing. A guide plate is installed at the bottom of the convex plate. A damper is installed at the upper end of the lifting frame, the lower end of the damper is connected to a docking frame, and a spring is arranged on the outside of the telescopic end of the damper. An auxiliary roller is rotatably installed at the lower end of the docking frame.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] The present invention manufactures a lightweight vacuum laser film through a base layer, an adhesion enhancement layer, a vacuum metal plating layer, a high-transparency wear-resistant layer, and an anti-ultraviolet layer. Among them, the base layer made of a blend of nanocellulose and polylactic acid has lightweight and high tensile strength, and the anti-ultraviolet layer is made by compounding fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin, which can form an intelligent anti-ultraviolet protection layer and provide a self-modifying effect. Moreover, the settings of the base material layer preparation, adhesion enhancement layer coating, vacuum plating, hot pressing and compounding, anti-ultraviolet layer coating, and slitting and packaging processes can efficiently prepare the lightweight vacuum laser film. And, in the preparation of the base material layer, through the combined functional device set in the gravure coating equipment, the efficient aeration mixing of the coating liquid and the strengthening of the recovery and infiltration effects of the excess coating liquid can be achieved.

[0032] The settings of the mixing component and the aerator, that is, the air generated by the aerator can be transmitted to the inside of the conduit and discharged along the conduit from the jet channels opened inside the jet head to achieve the aeration mixing of the coating liquid inside the material tank and reduce the problem of coating liquid particles. And through the drive of the first pulley group, the rotation of the rotating cylinder can be realized. Thus, the rotating cylinder can assist in realizing the meshing transmission of the first bevel gear and the second bevel gear. In this way, the jet head docked on one side of the second bevel gear can achieve circumferential rotation aeration, improving the aeration mixing effect.

[0033] The setting of the indirect structure, that is, when the first pulley group rotates, it can also drive the rotation of the first turntable. Thus, the swing arm installed on the top of the first turntable can intermittently contact and drive the second convex shaft set outside the second turntable through the rotation effect. In this way, the intermittent rotation of the second turntable can be realized. At the same time, with the limit docking effect of the limit groove opened outside the first turntable and the second convex shaft set outside the second turntable, the stability of the intermittent rotation state of the second turntable can be guaranteed. Thus, with the intermittent rotation of the second turntable, the jet housing docked in the middle of the second turntable can realize the intermittent adjustment of the jet position accordingly to ensure the full aeration mixing inside the material tank and avoid the occurrence of problems such as mixing omission or insufficiency.

[0034] The setting of the extrusion component, that is, when the third bevel gear and the fourth bevel gear are in meshing transmission, the rotation of the screw docked on the top of the fourth bevel gear can be realized. Thus, the moving rod threadedly connected to the outside of the screw can realize stable up and down movement through the limit and guidance of the stabilizing frame. In this way, the clamping of the convex plate and the auxiliary roller set inside the extrusion structure on the completed coated laser film can be indirectly realized, and through the adjustment effect, the auxiliary extrusion activities of laser films with different thicknesses can be satisfied. When the laser film is clamped by the convex plate and the auxiliary roller, the excess coating liquid coated inside the laser film can be extruded, accelerating the subsequent drying efficiency and assisting in strengthening the uniformity of the infiltration 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, the telescopic rods connected on both sides can be driven, and the rotating disk connected to the upper ends of the telescopic rods on both sides can rotate synchronously to meet the driving of the first shaft body, but when the first shaft body rotates, the connecting shaft installed at the upper end can be made to cooperate with the connection transmission effect of the second shaft body to make the connecting sleeve installed on the outside of the connecting shaft, thereby realizing the rotation and swing of the external fixed side plate, thereby, 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, so that 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, so that the subsequent drying and coating uniformity are assisted and strengthened. 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 diagram of the structure 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 It 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 The enlarged structural diagram at A in the middle;

[0043] Figure 8 It 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 metal plating layer - 300, high light transmittance and wear-resistant layer - 400, ultraviolet resistance layer - 500, bracket - 1, feeding roller - 2, coating box - 3, control cabinet - 4, guide roller - 5, gravure roller - 6, material box - 7, pressure roller - 8, cylinder - 9, combined function device - 10, fixed frame - 101, mixing component - 102, first motor - 1021, first pulley set - 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 groove - 10293, second turntable - 10294, first convex shaft - 10295, second convex shaft - 10296, aerator - 103, extrusion component - 104, connecting frame - 1041, protective housing - 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 set - 10412, stamping structure - 10413, first shaft body - 104131, connecting shaft - 104132, connecting sleeve - 104133, second shaft body 104134, sleeve - 104135, connecting arm - 104136, side plate - 104137, extrusion structure - 10414, lifting frame - 104141, convex plate - 104142, guide plate - 104143, damper - 104144, docking frame - 104145, spring - 104146, auxiliary roller - 104147. Detailed implementation mode

[0048] In order to further explain the technical solution of the present invention, it will be elaborated in detail through specific embodiments below.

[0049] In the first aspect, the present application proposes a lightweight vacuum laser film. Please refer to Figures 1 - 2 , including: base layer 100, adhesion enhancement layer 200, vacuum metal plating layer 300, high light transmittance and wear-resistant layer 400, and ultraviolet resistance layer 500. The adhesion enhancement layer 200 is coated on the upper surface of the base layer 100. The vacuum metal plating layer 300 is deposited on the upper surface of the adhesion enhancement layer 200 by magnetron sputtering. The high light transmittance and wear-resistant layer 400 is hot-pressed on the upper surface of the vacuum metal plating layer 300. The ultraviolet resistance layer 500 is coated on the upper surface of the high light transmittance and 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 has both biodegradability and high tensile strength with a tensile strength ≥ 150 MPa, is 40% lighter than traditional PET substrates, and the surface nano-porous structure can enhance the interfacial bonding force;

[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. The setting of this layer not only improves the adhesion between the base layer and the vacuum metalized layer, but also has the characteristics of environmental protection and renewability, meeting the requirements of green production;

[0052] The vacuum metalized layer 300 is made by sputtering a copper-silver alloy film, with a thickness of 50 - 80 nm, formed by magnetron sputtering technology. Compared with the traditional aluminized layer, the reflectivity of the alloy coating is increased by 15% compared to pure aluminum, and it has stronger antioxidant properties, while maintaining the advantage of light weight;

[0053] The high-transparency and wear-resistant layer 400 is made of nano-silica particles and polycarbonate material, prepared by a special process. The hardness reaches above 4H, and the light transmittance is not less than 95%. The addition of nano-particles greatly improves the wear resistance and scratch resistance, while maintaining high transparency;

[0054] Among them, the special process mainly includes steps such as material mixing and dispersion, melt extrusion, casting film formation, surface hardening treatment, and cooling and shaping. The content of these steps can be known from the prior art, so it will not be elaborated in detail.

[0055] The anti-ultraviolet layer 500: is made of a composite of one or more of fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin, with a thickness of 1 - 3 μm. It can form an intelligent anti-ultraviolet protection layer, providing a dynamic anti-ultraviolet protection effect. At the same time, through the mixing of fluorosilicone resin and polyurethane resin, a balance can be achieved among ultraviolet protection, self-healing efficiency, and mechanical properties, that is, it can adjust the ultraviolet blocking rate in real time through photochromic response, and can also achieve micro-crack self-healing through dynamic bonds.

[0056] Specifically, the base layer 100 made of a blend of nanocellulose and polylactic acid is 40% lighter than traditional PET, and while having high tensile strength, it also has biodegradability to achieve lightweight and high strength. At the same time, the reflectivity of the copper-silver alloy coating is increased by 15% compared to pure aluminum, the light transmittance of the high-transparency and wear-resistant layer is ≥ 95% and the hardness reaches 4H, and the anti-ultraviolet layer 500 can achieve dynamic ultraviolet blocking, an 80% - 95% adjustment range, and self-healing function through the composite of fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin.

[0057] In a second aspect, the present application also proposes a production process for a lightweight vacuum laser film, including the following steps:

[0058] S1. Substrate layer preparation: Precisely pretreat the substrate layer made of the blend of nanocellulose and polylactic acid to ensure its surface is flat and clean, providing a good foundation for subsequent coating.

[0059] S2. Coating of the adhesion enhancement layer: Uniformly coat the bio-based composite material on the substrate layer through 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 the uniformity and adhesion of the coating.

[0060] S3. Vacuum plating: In a vacuum chamber, perform plating treatment on the adhesion enhancement layer by sputtering with copper-silver targets to form a vacuum metal coating on the upper surface of the adhesion enhancement layer. The coating rate is 0.3 - 0.5 nm / s, which can endow the laser film with excellent reflection performance and metallic luster.

[0061] S4. Thermal pressing and compounding: Through a thermoforming process, tightly bond the nano-composite polycarbonate material to the upper surface of the vacuum metal coating. The thermoforming temperature is set at 160 - 180 °C, the pressure is 2.5 - 3.5 MPa, and the holding time is 6 - 8 seconds. Then, perform surface hardening treatment to improve the wear resistance and hardness of the prepared laser film. Secondly, after thermoforming, additional cooling and shaping treatment is required. Cool down to below 40 °C through a cooling roller to ensure that the nano-composite polycarbonate material is tightly bonded to the vacuum metal coating, achieving an improvement in overall stability and durability.

[0062] S5. Coating of the anti-ultraviolet layer: Using spraying technology, uniformly coat the coating compounded with fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin on the surface of the high-transparency wear-resistant layer. After drying, form an anti-ultraviolet protection structure, thus completing the preparation of the lightweight vacuum laser film.

[0063] S6. Slitting and packaging: Slit and rewound the prepared lightweight vacuum laser film to the required size specifications and package it.

[0064] Among them, in step S1, the nanocellulose and polylactic acid are melt-blended in a ratio of 7:3 and formed into a film through a casting molding technique. The temperature is controlled at 160 - 180 °C, and the traction speed is controlled at 8 - 10 m / min.

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

[0066] Specifically, the material is transmitted to the inside of the coating box 3 through the feeding roller 2. At this time, the material is first transmitted from the upper end of the first guide roller 5 to the lower end of the second guide roller 5, and then transmitted 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 rotation of the gravure roller 6 is realized through the control cabinet 4, the coating inside the material box 7 can be taken out to perform a coating activity with the transmitted material. At the same time, the pressure roller 8 oppositely arranged above the gravure roller 6 can be driven by the cylinder 9 to extrude the material being coated and transmitted to improve the overall coating quality. The material after coating can be transmitted from the right opening of the coating box 3 to the next working station for subsequent processing.

[0067] Please refer to Figure 5 , the combined functional device 10 in this embodiment includes a fixing frame 101. The fixing frame 101 is fixedly arranged at the lower end inside the coating box 3. A mixing component 102 is arranged at the upper end of the fixing frame 101. The upper half of the mixing component 102 extends into the material box 7. The lower end of the mixing component 102 is oppositely connected to the exhaust end of an aerator 103. The right side of the mixing component 102 is connected to an extrusion component 104. 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. Therefore, it will not be described in detail in this application. At the same time, the external exhaust end of the aerator 103 and the docking end at the bottom of the mixing component 102 are in a rotatable docking state.

[0069] Please refer to Figures 6 - 8, the hybrid component 102 in this embodiment includes a first motor 1021. The first motor 1021 is installed outside the upper end of the fixed frame 101, and the upper end of the first motor 1021 is connected to the first pulley group 1022. The left side of the first pulley group 1022 is connected to the rotating cylinder 1023, and the rotating cylinder 1023 is vertically and rotatably docked with the left side of the upper end of the fixed frame 101. The outside of the rotating cylinder 1023 is docked with an air jet housing 1024, and the air jet housing 1024 extends into the lower end of the material box 7 and is connected. A conduit 1025 is inserted into the rotating cylinder 1023, and the conduit 1025 is integrally arranged in an L-shaped tubular shape. Moreover, the bottom of the conduit 1025 is oppositely docked with the exhaust end outside the aerator 103. A first bevel gear 1026 is provided at the upper end of the rotating cylinder 1023, and 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 oppositely docked with an air jet head 1028, and the air jet head 1028 is installed on the upper left side of the air jet housing 1024. That is, when the second bevel gear 1027 is in a rotating state, the rotation of the air jet head 1028 can be synchronously realized. An intermittent structure 1029 is provided on the outer side of the lower end of the air jet housing 1024;

[0070] Among them, the air jet head 1028 further includes an air jet pipe 10281. The air jet pipe 10281 is opened in the middle of the air jet head 1028, and a solenoid valve 10282 is installed inside the air jet pipe 10281. The air jet pipe 10281 is connected to the upper left side of the conduit 1025, and the air jet pipe 10281 is integrally arranged in a Y-shaped pipe shape. At the same time, the aperture of the air jet pipe 10281 gradually decreases from inside to outside. In this way, the exhaust speed can be increased, and the aeration and 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 right end 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 opened outside the first turntable 10291. A second turntable 10294 is oppositely provided on the left side of the first turntable 10291, and the second turntable 10294 is connected to the outside of the air jet housing 1024. In this way, the intermittent rotation drive of the air jet housing 1024 can be realized. The upper end of the second turntable 10294 is respectively and equidistantly provided with a first convex shaft 10295 and a second convex shaft 10296, and the number of the first convex shaft 10295 and the second convex shaft 10296 is the same, both being eight. Moreover, the diameter of the first convex shaft 10295 is the same as that of the limiting groove 10293, and the second convex shaft 10296 can be intermittently driven with the outside of the swing arm 10292.

[0072] Specifically, by operating the first motor 1021, the rotation of the first pulley set 1022 docked at the top can be achieved. As the first pulley set 1022 rotates, the drum 1023 docked on the left side of the first pulley set 1022 can rotate synchronously. In this way, the first bevel gear 1026 and the second bevel gear 1027 meshing at the upper end are driven. Thus, when the second bevel gear 1027 is in a rotating state, the synchronous rotation drive of the jet head 1028 docked on 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 transmitted along the conduit 1025 to the rotating jet head 1028. Through the exhaust cooperation of the jet pipe 10281 opened inside, the air can be quickly discharged under the action of the shape and structure inside the jet pipe 10281. In this way, the jet head 1028 can meet the requirements of high-efficiency rotational aeration and mixing treatment, significantly improving the mixing quality of the coating liquid in the material box 7 and enhancing the subsequent coating quality;

[0073] Meanwhile, when the first pulley set 1022 is in a rotating state, the rotation of the first turntable 10291 installed on the top of the fixed frame 101 can also be driven. Thus, the swing arm 10292 installed on the top of the first turntable 10291 will push the second convex shaft 10296 provided at the upper end of the second turntable 10294 to achieve the intermittent rotation of the second turntable 10294. As the second turntable 10294 rotates intermittently, the jet housing 1024 connected to the middle of the second turntable 10294 can rotate intermittently synchronously to automatically adjust its aeration and mixing position, further improving the mixing quality of the coating liquid in the material box 7. Meanwhile, when the second turntable 10294 rotates intermittently, the first convex shaft 10295 provided at another place outside the second turntable 10294 can be correspondingly engaged into the limiting groove 10293 opened outside the first turntable 10291 to achieve intermittent adjustment and locking cooperation, so that after the jet housing 1024 is intermittently adjusted, it can be in a stable state, avoiding the occurrence of self-offset problems;

[0074] Meanwhile, when there is no need for aeration and mixing activities, the solenoid valve 10282 installed inside the jet pipe 10281 can be used to automatically close the jet pipe 10281, avoiding the intrusion of the coating liquid.

[0075] Please refer to Figures 9 - 11, in this embodiment, 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. A second motor 1043 is provided on the left side of the connecting frame 1041. The right side of the second motor 1043 is connected to a third bevel gear 1044. The upper end of the third bevel gear 1044 is meshed with a fourth bevel gear 1045. A limiting seat 1046 is fixedly provided at the upper end of the connecting frame 1041. A vertical screw 1047 is installed at the upper end of the fourth bevel gear 1045, and the screw 1047 is inserted into the middle of the limiting seat 1046. A moving rod 1048 is threadedly connected to the outer side of the upper end of the screw 1047, and a stabilizing frame 1049 is connected to the outside of the moving rod 1048. And the moving rod 1048 is integrally arranged in a rectangular rod shape, so as to be vertically and limit-slidingly connected to the middle of the upper end of the 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 rotationally connected to a rotating disk 10410. The lower ends of the left and right sides of the rotating disk 10410 are respectively connected to telescopic rods 10411. The bottoms of the two telescopic rods 10411 are connected to the upper end of a second pulley group 10412, and can rotate synchronously with the second pulley group 10412. The right side of the second pulley group 10412 is connected to the outer end of the limiting seat 1046, and the left side of the second pulley group 10412 is correspondingly connected to the upper end of a 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 driven synchronously. 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 an extrusion structure 10414. The extrusion structure 10414 is installed on the upper end of the protective shell 1042.

[0076] Among them, the stamping structure 10413 includes a first shaft body 104131. The first shaft body 104131 is connected to the upper end of the rotating disk 10410. A connecting shaft 104132 is obliquely inserted into the upper end of the first shaft body 104131. 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 a second shaft body 104134. A sleeve 104135 is sleeved on the outside of the second shaft body 104134. And the second shaft body 104134 and the outside of the first shaft body 104131 are arranged in an inclined direction. The top of the sleeve 104135 is connected to the stamping structure 10413. A connecting arm 104136 is rotationally connected to the left side of the sleeve 104135. The lower end of the connecting arm 104136 is connected to a side plate 104137. And the bottom of the connecting arm 104136 is arranged in a smooth spherical shape. The side plate 104137 is fixedly arranged on 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 inner bottom of the protective shell 1042 through telescopic parts. A convex plate 104142 is installed outside the lifting frame 104141, and the outside 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, while the lifting frame 104141 can move up and down along the convex plate 104142. A guide plate 104143 is inclinedly installed at the bottom of the convex plate 104142, and the left side of the guide plate 104143 extends into the material box 7. A damper 104144 is installed at 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 arranged outside the telescopic end of the damper 104144. 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 improve the subsequent drying efficiency, the excess coating liquid applied can be cleaned. The second motor 1043 provided on the left side of the connecting frame 1041 can be operated to enable the second motor 1043 to achieve the meshing transmission between the third bevel gear 1044 and the fourth bevel gear 1045. With the rotation of the fourth bevel gear 1045, the screw rod 1047 connected to the upper end of the fourth bevel gear 1045 can satisfy the up and down movement of the externally thread-connected moving rod 1048, enabling the moving rod 1048 to move down or up in cooperation with the vertical limiting function of the externally connected stabilizing frame 1049. In this way, the rotating disk 10410 connected to the upper end of the moving rod 1048 can indirectly achieve the downward movement of the top lifting frame 104141. With the downward movement of the lifting frame 104141, the auxiliary roller 104147 can move downward synchronously to satisfy the clamping of the coated laser film by the auxiliary roller 104147 and the convex plate 104142. Through the clamping cooperation of 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 laser film to enhance the coating quality.

[0079] When the first pulley group 1022 is in rotational motion, the rotation of the second pulley group 10412 docked at the upper end can be synchronously achieved. With the rotation of the second pulley group 10412, the rotation drive of the telescopic rods 10411 docked on the left and right sides of the upper end can be satisfied. Thus, the rotation drive of the rotating disk 10410 docked at the top can be achieved. When the rotating disk 10410 is in a rotating state, the first shaft body 104131 docked at the middle of the upper end of the rotating disk 10410 can rotate synchronously. The rotating first shaft body 104131 can, through the connection and cooperation of the inclined connecting shaft 104132 and the second shaft body 104134 docked at the upper end of the connecting shaft 104132, satisfy the rotational swing of the connecting sleeve 104133 docked outside the connecting shaft 104132, that is, satisfy the reciprocating swing of the side plate 104137 provided outside the connecting sleeve 104133. With the reciprocating swing of the side plate 104137, the sleeve 104135 connected and combined through the connecting arm 104136 can achieve reciprocating up and down movement. Thus, the lifting frame 104141 that completes the lifting adjustment can achieve reciprocating downward pressing movement. That is, when the lifting frame 104141 reciprocates downward, through the cooperation of the damper 104144 and the spring 104146 provided at the upper end of the lifting frame 104141, the docking frame 104145 can improve the extrusion effect on the auxiliary roller 104147. Thus, the auxiliary roller 104147 can increase its extrusion force to efficiently combine with the convex plate 104142, realize the discharge of the excess coating liquid inside the coated laser film, accelerate the subsequent drying efficiency and improve the coating penetration effect, and strengthen the coating quality and uniformity;

[0080] The extruded excess coating liquid can then re-enter 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 are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lightweight vacuum laser film, characterized in that: The lightweight vacuum laser film is composed of, from bottom to top: a base layer (100), an adhesion enhancement layer (200), a vacuum metal plating layer (300), a high light transmittance and wear-resistant layer (400), and an anti-ultraviolet layer (500). The adhesion enhancement layer (200) is coated on the upper surface of the base layer (100). The vacuum metal plating layer (300) is magnetron sputtered on the upper surface of the adhesion enhancement layer (200). The high light transmittance and wear-resistant layer (400) is hot-pressed on the upper surface of the vacuum metal plating layer (300). The anti-ultraviolet layer (500) is precisely sprayed and coated on the upper surface of the high light transmittance and wear-resistant layer (400). The base layer (100) is made of a blend of nanocellulose and polylactic acid, with 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, with a thickness of 2 - 4 μm. The vacuum metal plating layer (300) is made by sputtering a copper-silver alloy film, with a thickness of 50 - 80 nm, and is formed by magnetron sputtering technology. The high light transmittance and wear-resistant layer (400) is formed by compounding nanosilica particles and polycarbonate materials. The anti-ultraviolet layer (500): is made by compounding 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, for the lightweight vacuum laser film according to claim 1, characterized in that, It includes the following steps: S1. Substrate layer preparation: The substrate layer made of a blend of nanocellulose and polylactic acid is precisely pre-treated to ensure its surface is flat and clean. S2. Coating of the adhesion enhancement layer: Through a gravure coating device, the bio-based composite material is evenly coated on the substrate layer, with the coating speed controlled at 25 - 35 m / min and the coating temperature maintained at 55 - 65 °C. S3. Vacuum plating: In a vacuum chamber, the adhesion enhancement layer is plated by sputtering with copper-silver targets to form a vacuum metal plating layer on the upper surface of the adhesion enhancement layer. S4. Hot-pressing and compounding: Through a hot-pressing forming process, the nano-composite polycarbonate material is tightly bonded to the upper surface of the vacuum metal plating layer. The hot-pressing temperature is set at 160 - 180 °C, the pressure is 2.5 - 3.5 MPa, the holding time is 6 - 8 seconds, and surface hardening treatment is carried out. S5. Coating of the anti-ultraviolet layer: Using spraying technology, the coating compounded with fluorosilicone resin, polyurethane resin, and photochromic fluorocarbon resin is evenly coated on the surface of the high light transmittance and 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; The completed lightweight vacuum laser film is slit and rewound to the required size specifications and packaged.

3. The production process of a lightweight vacuum laser film according to claim 2, characterized in that: In step S1, nanocellulose and polylactic acid are melt-blended in a ratio of 7:3 and formed into a film through a casting forming technology, with the temperature controlled at 160 - 180 °C and the traction 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 the step S2 includes a bracket (1). A feeding roller (2) is rotatably installed at the upper end of the bracket (1). The right side of the bracket (1) is connected to a coating box (3). A control cabinet (4) is installed at the rear side of the coating box (3). Guide rollers (5) are arranged on both sides inside the coating box (3). A gravure roller (6) is installed in the middle of the coating box (3). A material box (7) is arranged outside the gravure roller (6). A pressure roller (8) is arranged opposite to the upper end of the gravure roller (6), and the lower end of the pressure roller (8) is connected to a cylinder (9). A combined function 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 function device (10) includes a fixed frame (101). The fixed frame (101) is fixedly arranged at the lower end inside the coating box (3). A mixing component (102) is arranged at the upper end of the fixed frame (101), and a part of the mixing component (102) extends into the material box (7). The lower end of the mixing component (102) is oppositely connected to the exhaust end of an aerator (103). A squeezing component (104) is connected to the right side of the mixing component (102), and the squeezing component (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 component (102) includes a first motor (1021). The first motor (1021) is installed outside the upper end of the fixed frame (101), and the upper end of the first motor (1021) is connected to a first pulley group (1022). The left side of the first pulley group (1022) is connected to a rotating cylinder (1023). A jet shell (1024) is connected to the outside of the rotating cylinder (1023), and the jet shell (1024) is connected to the lower end inside the material box (7). A conduit (1025) is inserted into the rotating cylinder (1023). A first bevel gear (1026) is arranged at the upper end of the rotating cylinder (1023), and the left side of the first bevel gear (1026) meshes with a second bevel gear (1027). The left side of the second bevel gear (1027) is oppositely connected to a jet head (1028), and the jet head (1028) is installed on the left side of the upper end of the jet shell (1024). An intermittent structure (1029) is arranged on the outer side of the lower end of the jet shell (1024); The jet head (1028) further includes a jet pipe (10281). The jet pipe (10281) 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).

7. The production process of a lightweight vacuum laser film according to claim 6, characterized in that: The intermittent structure (1029) includes a first rotating disk (10291). The first rotating disk (10291) is connected to the upper right end of the first pulley set (1022), and the first rotating disk (10291) is located at the top of the fixed frame (101). A swing arm (10292) is installed at the upper end of the first rotating disk (10291), and a limiting groove (10293) is formed on the outside of the first rotating disk (10291). A second rotating disk (10294) is arranged opposite to the left side of the first rotating disk (10291), and the second rotating disk (10294) is connected to the outside of the air jet shell (1024). First convex shafts (10295) and second convex shafts (10296) are respectively arranged at equal intervals at the upper end of the second rotating disk (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). A second motor (1043) is arranged on the left side of the connecting frame (1041). The right side of the second motor (1043) is connected to a third bevel gear (1044). A fourth bevel gear (1045) is meshed and connected to the upper end of the third bevel gear (1044). A limiting seat (1046) is fixedly arranged at the upper end of the connecting frame (1041). A screw rod (1047) is installed at the upper end of the fourth bevel gear (1045), and the screw rod (1047) is inserted into the middle of the limiting seat (1046). A moving rod (1048) is in threaded connection with the upper end of the screw rod (1047), and a stabilizing frame (1049) is connected to the outside of the moving rod (1048). 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 a rotating disk (10410), and both sides of the rotating disk (10410) are connected to telescopic rods (10411). The bottom of the telescopic rods (10411) is oppositely connected to the upper end of a second pulley set (10412). One side of the second pulley set (10412) is connected to the outside of the limiting seat (1046), and the other side of the second pulley set (10412) is correspondingly connected to the upper end of the first pulley set (1022). A stamping structure (10413) is arranged in the middle of the upper end of the rotating disk (10410), and the top of the stamping structure (10413) is connected to an extrusion structure (10414). The extrusion structure (10414) is installed at 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 body (104131), the first shaft body (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 body (104131), a connecting sleeve (104133) is installed outside the connecting shaft (104132), the upper end of the connecting shaft (104132) is connected to a second shaft body (104134), and a sleeve (104135) is sleeved outside the second shaft body (104134). The top of the sleeve (104135) is connected to the stamping structure (10413), a connecting arm (104136) is rotatably butted at the outer end of the sleeve (104135), and the lower end of the connecting arm (104136) is connected to a side plate (104137). The side plate (104137) is fixedly arranged outside 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 outside the lifting frame (104141), and the outer side of the convex plate (104142) is fixed to the protective shell (1042). A guide plate (104143) is installed at the bottom of the convex plate (104142), a damper (104144) is installed at the upper end of the lifting frame (104141), the lower end of the damper (104144) is connected to a docking frame (104145), and a spring (104146) is arranged outside the telescopic end of the damper (104144). An auxiliary roller (104147) is rotatably installed at the lower end of the docking frame (104145).

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