High-barrier PVC environment-friendly composite film calendering device

Abstract

The high-barrier PVC environment-friendly composite film calendering forming device relates to the technical field of plastic film processing and comprises a mixed extrusion plasticizing unit and a calendering forming composite hot bonding unit. The mixed extrusion plasticizing unit is provided with a four-channel closed feeding transfer box and a hopper with a stirring paddle, and can realize dust-free mixing; the plasticizing cylinder is extruded by cooperating with the screw through three heaters, so that the melting is uniform; the calendering forming composite hot bonding unit comprises a calendering forming assembly, a corona activation assembly and a hot bonding assembly; the calendering forming assembly is provided with a double-bin barrier additive dispersion box, two kinds of additives can be added synchronously, and the hollow hot calendering roller with a built-in heat conduction oil pipe can ensure constant temperature calendering; the cooling and shaping box is provided with a buffer rotating wheel, and soft air cooling shaping is realized. The device also integrates the functions of strip path switching, double-sided synchronous corona, adjustable hot bonding, deviation correction, edge cutting and winding. The device can improve the barrier property and surface activity of the film, realize bubble-free compounding, realize regular winding, and is suitable for various production processes.

Description

Technical Field

[0001] This invention relates to the field of plastic film processing technology, specifically to a high-barrier PVC environmentally friendly composite film calendering and molding apparatus. Background Technology

[0002] PVC composite films are widely used in food packaging, daily chemical sealing, and industrial protection due to their good flexibility, processability, and cost-effectiveness. However, as downstream industries continue to upgrade their requirements for the barrier properties, environmental friendliness, finished product appearance, and composite stability of packaging materials, the technological shortcomings and structural defects of traditional PVC composite film calendering equipment have gradually become apparent, making it difficult to meet the needs of large-scale, high-quality production of high-end, high-barrier PVC composite films.

[0003] Currently, conventional PVC film calendering equipment in the industry generally adopts an open feeding and single mixing mode. The raw material mixing process is prone to dust pollution, which does not meet environmental protection production standards. Furthermore, the uneven mixing of various functional additives can easily lead to additive agglomeration and imbalance in the ratio, resulting in inconsistent basic quality of the film material.

[0004] Meanwhile, traditional plasticizing extrusion structures mostly adopt a single constant temperature heating mode, which cannot achieve gradient plasticizing. The raw materials are prone to incomplete plasticizing or high-temperature overheating and decomposition. The uniformity of melt output is poor, and the thickness of the film blank fluctuates greatly, affecting subsequent calendering.

[0005] In terms of enhancing the barrier properties of thin films, most existing equipment can only add a single additive. When producing films with different barrier specifications, the machine needs to be stopped to change materials, resulting in low production efficiency. Moreover, most additives are applied as a post-production surface coating, which has poor adhesion to the film and is prone to falling off during use, making it difficult to meet the standards for film density and oxygen and moisture barrier properties. Conventional calendering roll heating structures are simple, with uneven temperature distribution on the roll surface. The film preform is not heated and stretched evenly, which easily leads to defects such as local thin areas and uneven surface after forming.

[0006] In the cooling and shaping process, traditional equipment often uses direct-blowing air cooling. The high-speed cooling airflow directly impacts the softened film preform, which can easily cause warping and wrinkles on the film surface, destroy the dense barrier structure formed inside the film, and result in a significant reduction in the barrier performance of the finished product and an excessively high defect rate.

[0007] Meanwhile, traditional molding equipment has a single process, mostly supporting only single-layer film molding or fixed composite processes, and cannot meet the production needs of both single-layer barrier films and multi-layer composite films. Enterprises need to purchase multiple machines to adapt to different products, resulting in high equipment investment costs, large space occupation, and poor production flexibility.

[0008] In addition, the traditional equipment has outdated thin film surface treatment processes, which are mostly single-sided corona activation or no activation treatment. The surface activity of the two sides of the film is inconsistent, the dyne value is low and the uniformity is poor. This can easily lead to problems such as delamination, delamination and poor adhesion during subsequent printing, lamination and coating processes.

[0009] In the thermal lamination process, the spacing between the lamination rollers is fixed and the pressure is not adjustable, which cannot adapt to the composite requirements of substrates with different thicknesses. Furthermore, there is no preheating process before the substrate is laminated, and direct lamination of cold and hot substrates can easily generate bubbles and interface gaps, which seriously affect the overall barrier performance and structural stability of the composite film.

[0010] Meanwhile, conventional winding processes lack precise correction and edge trimming structures, making it easy for the film material to deviate and for the width to be irregular. Finished products are prone to problems such as loose winding, bulging, and rough edges, which increases the processing costs of subsequent deep processing processes.

[0011] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0012] To address the shortcomings of existing technologies, this invention provides a high-barrier PVC environmentally friendly composite film calendering and molding device. This device solves problems encountered by existing PVC calendering equipment during operation, such as: high dust levels from open-type feeding, uneven mixing and plasticization, large thickness deviations in the preform; limited additives, uneven roller temperature, and poor film barrier performance; wrinkling and damage to the barrier layer due to direct-blowing cooling; limited equipment processes and inconvenient film thickness calibration; insufficient single-sided corona activation leading to delamination; non-adjustable laminating rollers and lack of preheating causing composite air bubbles; and poor finished product uniformity due to lack of edge correction and trimming during winding.

[0013] To achieve the above objectives, the present invention provides the following technical solution: The high-barrier PVC environmentally friendly composite film calendering and molding device includes a mixing, extrusion, and plasticizing unit and a calendering and molding composite heat-sealing unit arranged in a T-shape with vertical connections.

[0014] As an optimized solution, the calendering-formed composite heat-bonding unit includes a calendering component, a corona activation component, and a heat-bonding component.

[0015] As an optimized solution, the calendering assembly includes two transversely symmetrical and longitudinally extended hot calendering rolls, which are hollow rolls. Each of the two hot calendering rolls has a calendering mounting plate on its longitudinal sides, and the two ends of the two hot calendering rolls are rotatably supported between the two calendering mounting plates.

[0016] As an optimized solution, a cooling and shaping box is provided below each of the hot calendering rolls. The two longitudinal ends of the cooling and shaping box are respectively fixed to the longitudinal inner walls of the two calendering mounting vertical plates. A buffer wheel is rotatably provided inside each of the cooling and shaping boxes.

[0017] As an optimized solution, a path switching roller is provided below the two cooling and shaping boxes. The path switching roller is rotatably positioned between the two calendering mounting vertical plates. Three centrally symmetrical triangular guide seats are fixed on the outer peripheral wall of the path switching roller.

[0018] As an optimized solution, an active traction roller is provided on each of the two lateral sides of the path switching roller, and a driven traction roller is provided directly below the active traction roller.

[0019] As an optimized solution, the heat bonding assembly includes two longitudinally symmetrical bonding mounting plates. A feeding roller is rotatably mounted on the upper center of the two bonding mounting plates. A bonding pressure roller is raised and lowered directly below the feeding roller. Two bonding conveying rollers are provided on each of the left and right sides of the bonding pressure roller.

[0020] As an optimized solution, a fixed side panel is provided at the top of the opening on one side of the two attached mounting vertical plates, and a swing-opening and closing panel is provided at the top of the opening on the other side.

[0021] As an optimized solution, a preheating box is provided on the transverse outer wall of the fixed side panel, an arc-shaped electric heating tube is provided inside the preheating box, and a preheating fan is provided on the transverse end face of the preheating box.

[0022] As an optimized solution, the mixing, extrusion, and plasticizing unit includes two horizontally symmetrical integrated circuit boxes. The integrated circuit boxes are square boxes with their lower ends grounded and extending vertically. A control host is fixed on the longitudinal outer wall of one of the integrated circuit boxes.

[0023] As an optimized solution, an extrusion worktable is provided between the two integrated circuit boxes, and the two lateral ends of the extrusion worktable are fixedly supported on the lateral outer walls of the two integrated circuit boxes.

[0024] As an optimized solution, the extrusion worktable is equipped with a screw-type plasticizing extruder, which includes a power motor. The power motor is fixed to one longitudinal end of the upper surface of the extrusion worktable, and a reduction gearbox is provided on one longitudinal side of the power motor. The reduction gearbox is also fixed to the upper surface of the extrusion worktable.

[0025] As an optimized solution, the screw-type plasticizing extruder further includes a longitudinally extending plasticizing barrel, which is fixedly supported on the upper surface of the extrusion worktable. The end of the plasticizing barrel near the gearbox is closed, and an extrusion screw is rotatably disposed inside the plasticizing barrel.

[0026] As an optimized solution, three barrel heaters are fixed to the circumferential outer wall of the plasticizer barrel.

[0027] As an optimized solution, the output shaft end of the power motor passes sequentially through the closed end face of the gearbox and the plasticizing barrel and is fixed to the end of the extrusion screw.

[0028] As an optimized solution, a hopper is fixed on the upper surface of the plasticizing cylinder near the gearbox. The upper end of the hopper is open, and the lower end of the hopper is connected to the plasticizing cylinder. A closed end cap is fixed at the upper opening of the hopper.

[0029] As an optimized solution, a mixing motor is fixed at the center of the upper surface of the closed end cover. The output shaft of the mixing motor passes downward through the closed end cover and is fixed with a stirring shaft. Four centrally symmetrical mixing blades are fixed on the stirring shaft.

[0030] As an optimized solution, four centrally symmetrical feeding transfer boxes are fixed on the circumferential outer wall of the hopper. The feeding transfer boxes are connected to the hopper. Each feeding transfer box has a feeding bend fixed at its lower end. The four feeding bends are fixed on the longitudinal outer walls of the two integrated circuit boxes.

[0031] As an optimized solution, an extruder head is fixed to the open end of the plasticizing barrel, a longitudinally extending molten material box is fixed to the outer end face of the extruder head, a material feeding nozzle is fixed to the lower end of the molten material box, and a melt flow channel communicating with the material feeding nozzle is opened inside the molten material box.

[0032] As an optimized solution, the two hot calendering rollers are located on the lower side of the molten fabric box, with the two hot calendering rollers closely attached and a calendering gap reserved in the middle facing the fabric nozzle.

[0033] As an optimized solution, two longitudinally symmetrical, laterally extending mounting racks are provided on one longitudinal side of the two integrated circuit boxes. The two mounting racks are grounded. Each mounting rack has a limiting stop fixed at each of its two transverse ends on its upper surface. A guide slide rod is fixed between the two transversely opposite limiting stops.

[0034] As an optimized solution, several adjusting slide blocks are slidably installed on each of the guide slide blocks. A support base plate is fixed on the upper surface of two longitudinally opposite adjusting slide blocks. The support base plate is a longitudinally extending square plate, and a positioning bolt for fixing the adjusting slide block is screwed onto the upper surface of the support base plate.

[0035] As an optimized solution, the lower end of the calendering mounting vertical plate is fixed to the upper surface of the two middle supporting base plates.

[0036] As an optimized solution, the lower end of the mounting plate is fixed to the upper surface of the two supporting base plates on the right side.

[0037] As an optimized solution, two calendering rolling motors are fixed on the longitudinal outer wall of the calendering mounting vertical plate located on the front side. The output shaft of the calendering rolling motor passes through the calendering mounting vertical plate and is fixed to the closed end face of the hot calendering roller. A rotating sleeve communicating with the hot calendering roller is fixed on the other end face of the hot calendering roller. The end of the rotating sleeve is rotatably mounted on the longitudinal inner wall of the calendering mounting vertical plate.

[0038] As an optimized solution, a heat insulation box is fixed on the longitudinal outer wall of the calender mounting vertical plate located on the rear side. A circulating hot oil pipe is fixed inside the heat insulation box. The circulating hot oil pipe is serpentine and its middle section passes through the two rotating sleeves and extends into the interior of the two hot calendering rolls.

[0039] As an optimized solution, a barrier agent dispersion box is also fixedly installed between the two calendering mounting vertical plates. The barrier agent dispersion box is located above the two hot calendering rollers and is sleeved on the outer periphery of the molten fabric box. The lower two ends of the barrier agent dispersion box are tapered and have discharge ports.

[0040] As an optimized solution, an isolation vertical plate is fixed on the inner bottom surface of the barrier agent dispersion box, which divides the interior of the barrier agent dispersion box into left and right parts for adding different types of additives.

[0041] As an optimized solution, a horizontal cover plate is fixed to the upper end face of the barrier agent dispersion box, and an agent addition tube is fixed to each longitudinal outer wall of the barrier agent dispersion box.

[0042] As an optimized solution, a material-blocking scraper is provided directly above each of the hot calendering rolls. The lower end of the material-blocking scraper is set close to the outer peripheral wall of the hot calendering roll, and the two longitudinal ends of the material-blocking scraper are respectively fixed on the longitudinal inner walls of the two calendering mounting vertical plates.

[0043] As an optimized solution, the cooling and shaping box is a square box with a side opening, and the opening ends of the two cooling and shaping boxes are arranged opposite each other.

[0044] As an optimized solution, air inlets are fixed on the transverse side end faces of the cooling and shaping box, and a cooling air box is fixed at the end of the air inlet. The cooling air box is a longitudinally extended, closed square box, and the cooling air box is fixedly installed on the longitudinal inner wall of the two rolling installation vertical plates.

[0045] As an optimized solution, a booster air pump is fixed on the longitudinal outer wall of the calendering mounting plate, and the booster air pump is connected to the cooling air box.

[0046] As an optimized solution, a stepper motor is fixed on the longitudinal outer wall of the calendering mounting vertical plate located on the front side, directly opposite the path switching roller. The output shaft end of the stepper motor passes through the calendering mounting vertical plate and is fixed to the side end face of the path switching roller.

[0047] As an optimized solution, two traction drive motors are fixed to the two active traction rollers on the calender mounting vertical plate located on the rear side. The output shaft ends of the traction drive motors pass through the calender mounting vertical plate and are fixed to the side end face of the active traction rollers.

[0048] As an optimized solution, square slots are respectively opened on the lower two transverse outer walls of each of the calendering mounting vertical plates. The square slots are located below the active traction pressure roller. A square replacement card seat is fixedly installed in each square slot. The driven traction roller is rotatably installed between two longitudinally opposite replacement card seats.

[0049] As an optimized solution, the corona activation assembly includes two longitudinally symmetrical activation mounting plates, which are T-shaped plates, and the lower ends of the activation mounting plates are fixed to the upper surfaces of the two supporting base plates on the left side.

[0050] As an optimized solution, the corona activation assembly further includes two symmetrical corona activation boxes, each of which is a square box with a half-open side. The open ends of the two corona activation boxes are arranged opposite each other. Each corona activation box is equipped with a high-frequency corona treatment machine. An activation control box is fixed on the longitudinal outer wall of the activation mounting plate located on the front side. The activation control box is electrically connected to the two high-frequency corona treatment machines respectively.

[0051] As an optimized solution, an upper positioning pressure roller is provided on each of the horizontal sides of the corona activation box located above. The upper positioning pressure roller extends longitudinally and is detachably mounted on the two activation mounting plates.

[0052] As an optimized solution, each of the upper positioning rollers is provided with a corresponding lower positioning roller below it. The lower positioning rollers are rotatably mounted between the two activated mounting plates. Two transversely symmetrical rotation drive motors are fixed on the longitudinal outer wall of the activated mounting plate located on the front side. The output shaft ends of the rotation drive motors pass through the activated mounting plate and are fixed to the side end face of the corresponding lower positioning roller.

[0053] As an optimized solution, three guide rollers are arranged at equal intervals in the transverse direction between the upper positioning pressure roller and the active traction pressure roller, and the same three guide rollers are also arranged between the lower positioning pressure roller and the driven traction roller. The six guide rollers are rotatably installed between the two active mounting plates.

[0054] As an optimized solution, a winding mechanism is rotatably provided at the leftmost end of the two activated mounting plates. The winding mechanism includes a collecting roller. A collecting drive motor is fixed on the longitudinal outer wall of the activated mounting plate located on the front side. The end of the output shaft of the collecting drive motor passes through the activated mounting plate and is fixed to the center of the side end face of the collecting roller.

[0055] As an optimized solution, an excess material removal mechanism and a deviation correction and positioning mechanism are respectively provided between the collecting roller and the upper positioning pressure roller.

[0056] As an optimized solution, the scrap removal mechanism includes a longitudinally extending sliding mounting rod, on which two longitudinally symmetrical mounting knife holders are slidably sleeved, and a cutting blade is fixed on the lower surface of the mounting knife holders.

[0057] As an optimized solution, the correction and positioning mechanism includes two longitudinally symmetrical correction mounting seats. The two correction mounting seats are located between the sliding mounting rod and the collecting roller and are telescopically mounted on the longitudinal inner wall of the activation mounting plate. Each correction mounting seat is rotatably equipped with a correction wheel.

[0058] As an optimized solution, the right side of the heat-bonding assembly is provided with two longitudinally symmetrical roll-up mounting plates. The roll-up mounting plates are inverted L-shaped plates, and the lower ends of the roll-up mounting plates are fixed to the upper surface of the rightmost support base plate.

[0059] As an optimized solution, the winding mounting plate is also equipped with the same winding mechanism, the excess material removal mechanism, and the deviation correction and positioning mechanism.

[0060] As an optimized solution, each of the attached mounting vertical plates is provided with a feeding drive module on its longitudinal outer wall to control the rotation of the feeding roller.

[0061] As an optimized solution, each of the bonding mounting vertical plates has a square sliding limit opening on its longitudinal outer wall near the lower part. A square lifting slide is slidably fitted into each sliding limit opening. The bonding pressure roller is rotatably mounted between two of the lifting slides. A rolling drive motor is fixed on the longitudinal outer wall of the lifting slide located on the front side. The end of the output shaft of the rolling drive motor passes through the lifting slide and is fixed to the side end face of the bonding pressure roller.

[0062] As an optimized solution, each of the sliding limit ports is provided with a lifting drive module on its upper and lower sides. The lifting drive module is fixed on the longitudinal outer wall of the mounting plate. Two vertical threaded rods are rotatably provided between the two vertically opposite lifting drive modules. The middle sections of the two vertical threaded rods pass through and are threadedly connected to the lifting slide.

[0063] As an optimized solution, a conveying drive motor that is connected and driven by the bonding conveying roller is fixed on the longitudinal outer wall of the bonding mounting vertical plate located on the rear side.

[0064] Compared with the prior art, the beneficial effects of the present invention are: 1. Four-channel closed-loop feeding and segmented plasticizing ensures uniform mixing and melting of raw materials. The four symmetrically arranged feed transfer boxes in the mixing, extrusion and plasticizing unit can realize closed feeding, with no dust overflow, meeting the requirements of environmentally friendly production; the hopper is equipped with symmetrical stirring paddles, which can fully mix various raw materials in a closed manner, and prevent additives from agglomerating and the proportion of imbalance. The plasticizer barrel uses three independent barrel heaters for gradient temperature control, combined with the extrusion screw shearing and conveying, ensuring that the raw material is fully melted without overheating decomposition or incomplete plasticization; the melt distribution box discharges material with a wide and uniform width, resulting in minimal fluctuations in the thickness of the base film.

[0065] II. Dual-compartment additive coating with constant temperature calendering enhances film barrier properties. The additive dispersion box adopts dual independent storage, which can add two kinds of barrier additives at the same time without stopping the machine to change materials; the additives are evenly coated on both sides of the film blank, and after hot roller pressing, they are deeply integrated with the film body and are not easy to fall off, which greatly improves the film density and oxygen and moisture barrier capabilities; The hollow hot pressing roll has a built-in serpentine heat-conducting oil pipe, which can achieve constant temperature coverage on the roll surface, ensuring that the film blank is heated and stretched evenly, and forming a flat surface without thin areas.

[0066] III. Buffered air-cooled shaping, fast shaping and protective barrier structure. Ordinary direct-blowing cooling can easily cause softened preforms to warp and wrinkle, damaging the dense internal barrier layer. However, the cooling airflow of this device is slowed down and dispersed by a buffer wheel, gently blowing the membrane. This can quickly shape and fix the size, while avoiding damage to the barrier structure, significantly reducing wrinkles and warped defects.

[0067] IV. Flexible switching of processing stations, one machine compatible with two processing techniques By using a path switching roller to rotate the triangular guide seat at a certain angle, two production lines can be freely switched: the film material is directly fed to the heat lamination station for lamination, or it enters the corona treatment station for surface activation modification. This allows a single machine to produce single-layer barrier film and PVC / PET composite film, eliminating the need to purchase multiple machines and reducing equipment investment. The machine is equipped with an adjustable traction roller group, and the film thickness is calibrated by secondary constraint of the roller gap. The feeding is stable without stretching or slippage, and the film thickness consistency is better.

[0068] V. Double-sided synchronous corona treatment improves film adhesion and compatibility. The upper and lower double corona chambers simultaneously process the front and back of the film, increasing the dyne value on both sides of the film at the same time, resulting in stronger surface activity. This ensures firm adhesion during subsequent printing, coating, and lamination, preventing delamination and peeling. The equipment is equipped with positioning pressure rollers and multiple sets of guide rollers to tighten the film material, ensuring uniform overall film corona intensity and avoiding localized insufficient activation.

[0069] VI. Adjustable height heating and bonding with preheating ensures bubble-free and delamination-free lamination. The laminating roller is driven to rise and fall by a threaded rod, and its height and roller pressure are adjustable to accommodate PET barrier film of different thicknesses. The unwinding roller unwinds at a uniform speed, ensuring balanced tension between the two film layers and preventing misalignment and stretching.

[0070] Before lamination, the PET film is uniformly preheated in a preheating box to eliminate internal stress in the film, making it less prone to air bubbles during hot and cold film lamination. After preheating and softening, it has a higher degree of integration with the PVC substrate, with no gaps at the composite interface, further improving the overall barrier effect.

[0071] 7. Uniform correction, trimming, and winding ensure neat and high-quality finished products. Both the corona treatment and heat lamination stations are equipped with correction and trimming mechanisms on the outside: the correction wheel can correct film material deviation in real time to ensure centered material feeding; the installed cutter head cuts off rough edges and overflow, unifies film width size, and reduces subsequent slitting processes. The winding mechanism matches the traction speed at a uniform speed, ensuring stable film tension and no loosening or bulging of the finished product, facilitating storage and further processing. Attached Figure Description

[0072] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0073] Figure 1 This is a schematic diagram of the overall external structure of the present invention in the main viewing direction; Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective; Figure 3This is a schematic diagram of the overall external structure of the present invention from the left-side view direction; Figure 4 This is an isometric view of the front three-dimensional structure of the present invention; Figure 5 This is a schematic diagram of the left and right isometric projections of the rear side of the present invention; Figure 6 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA. Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line; Figure 8 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the CC line; Figure 9 For the present invention along Figure 3 A schematic diagram of the internal structure cut along the DD line.

[0074] In the diagram: 1-Integrated circuit box, 2-Control host, 3-Extrusion worktable, 4-Power motor, 5-Reduction gearbox, 6-Plasticizing barrel, 7-Extrusion screw, 8-Hopper, 9-Closed end cap, 10-Mixing motor, 11-Mixing shaft, 12-Mixing blade, 13-Feed transfer box, 14-Feeding bend, 15-Barrel heater, 16-Extruder head, 17-Melting distribution box, 18-Distribution nozzle, 19-Mounting frame, 20-Limit stop, 21-Guide slide bar, 22-Adjustment... 23-Slide block, 24-Support base plate, 25-Hot calendering roll, 26-Caulking mounting vertical plate, 27-Caulking rolling motor, 28-Rotating sleeve, 29-Heat insulation box, 30-Circulating hot oil pipe, 31-Barrier agent dispersion box, 32-Isolation vertical plate, 33-Horizontal cover plate, 34-Auxiliary agent addition pipe, 35-Material baffle scraper, 36-Cooling and shaping box, 37-Air inlet seat, 38-Cooling air box, 39-Booster air pump, 40-Buffer wheel, 41-Path switching roller, 42-Stepper motor, 43-... 43-Triangular guide seat; 44-Active traction pressure roller; 45-Traction drive motor; 46-Square slot; 47-Replacement slot; 48-Driven traction idler roller; 49-Activation mounting plate; 50-Corona activation box; 51-High frequency corona treatment machine; 52-Activation control box; 53-Upper positioning pressure roller; 54-Lower positioning pressure roller; 55-Rotation drive motor; 56-Guide roller; 57-Collecting roller; 58-Collecting drive motor; 59-Sliding mounting rod; 60-Mounting knife holder; 61-Edge cutting knife. 61-Correction mounting base, 62-Correction wheel, 63-Fitting mounting vertical plate, 64-Feeding roller, 65-Feeding drive module, 66-Fitting pressure roller, 67-Sliding limit port, 68-Lifting slide, 69-Rolling drive motor, 70-Lifting drive module, 71-Vertical threaded rod, 72-Fitting conveyor roller, 73-Conveyor drive motor, 74-Fixed side panel, 75-Swing opening and closing panel, 76-Preheating box, 77-Arc-shaped electric heating tube, 78-Preheating fan, 79-Rewinding mounting plate. Detailed Implementation

[0075] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0076] like Figures 1 to 9 As shown, the high-barrier PVC environmentally friendly composite film calendering and molding device includes a mixing, extrusion, and plasticizing unit and a calendering and molding composite heat-sealing unit, which are arranged in a T-shaped vertical docking configuration.

[0077] The mixing, extrusion, and plasticizing unit includes two horizontally symmetrical integrated circuit boxes 1. The integrated circuit box 1 is a square box with its lower end grounded and extending vertically. A control host 2 is fixed on the longitudinal outer wall of one of the integrated circuit boxes 1.

[0078] An extrusion worktable 3 is provided between the two integrated circuit boxes 1, and the two ends of the extrusion worktable 3 are fixedly supported on the horizontal outer walls of the two integrated circuit boxes 1.

[0079] The extrusion worktable 3 is equipped with a screw-type plasticizing extruder, which includes a power motor 4. The power motor 4 is fixed to one longitudinal end of the upper surface of the extrusion worktable 3. A reduction gearbox 5 is provided on one longitudinal side of the power motor 4, and the reduction gearbox 5 is also fixed to the upper surface of the extrusion worktable 3.

[0080] The screw-type plasticizing extruder also includes a longitudinally extending plasticizing barrel 6, which is fixedly supported on the upper surface of the extrusion worktable 3. The end of the plasticizing barrel 6 near the gearbox 5 is closed, and an extrusion screw 7 is rotatably installed inside the plasticizing barrel 6.

[0081] The output shaft of the power motor 4 passes through the closed end face of the gearbox 5 and the plasticizer cylinder 6 in sequence and is fixed to the end of the extrusion screw 7.

[0082] A mixing motor 10 is fixed at the center of the upper surface of the closed end cover 9. The output shaft of the mixing motor 10 passes downward through the closed end cover 9 and is fixed with a stirring shaft 11. Four centrally symmetrical mixing blades 12 are fixed on the stirring shaft 11.

[0083] Four centrally symmetrical feeding transfer boxes 13 are fixed on the circumferential outer wall of the hopper 8. The feeding transfer boxes 13 are connected to the hopper 8. Each feeding transfer box 13 has a feeding bend 14 fixed at its lower end. The four feeding bends 14 are fixed on the longitudinal outer walls of the two integrated circuit boxes 1.

[0084] Three barrel heaters 15 are fixed to the circumferential outer wall of the plasticizer barrel 6.

[0085] An extruder head 16 is fixed to the open end of the plasticizing barrel 6. A longitudinally extending melt distribution box 17 is fixed to the outer end face of the extruder head 16. A feeding nozzle 18 is fixed to the lower end of the melt distribution box 17. A melt flow channel communicating with the feeding nozzle 18 is opened inside the melt distribution box 17.

[0086] Two longitudinally symmetrical, laterally extended mounting racks 19 are provided on one longitudinal side of the two integrated circuit boxes 1. The two mounting racks 19 are grounded. Each mounting rack 19 has a limit stop 20 fixed at each of the two lateral ends of its upper surface. A guide slide rod 21 is fixed between the two laterally opposite limit stops 20.

[0087] Several adjusting slide blocks 22 are slidably installed on each guide slide rod 21. A support base plate 23 is fixed on the upper surface of two longitudinally opposite adjusting slide blocks 22. The support base plate 23 is a longitudinally extending square plate, and a positioning bolt for fixing the adjusting slide block 22 is screwed onto the upper surface of the support base plate 23.

[0088] The calendering-formed composite heat-bonding unit includes a calendering component, a corona activation component, and a heat-bonding component.

[0089] The calendering assembly includes two transversely symmetrical and longitudinally extended hot calendering rolls 24. The hot calendering rolls 24 are hollow rolls. The two hot calendering rolls 24 are located on the lower side of the molten fabric box 17. The two hot calendering rolls 24 are closely attached and a calendering gap is reserved in the middle facing the fabric nozzle 18.

[0090] Each of the two hot calendering rolls 24 has a calendering mounting plate 25 on both sides of its longitudinal direction. The lower end of the calendering mounting plate 25 is fixed on the upper surface of the two middle support base plates 23. The two ends of the two hot calendering rolls 24 are respectively rotatably supported between the two calendering mounting plates 25.

[0091] Two calendering rolling motors 26 are fixed on the longitudinal outer wall of the calendering mounting vertical plate 25 located on the front side. The output shaft end of the calendering rolling motor 26 passes through the calendering mounting vertical plate 25 and is fixed to the closed end face of the hot calendering roller 24. A rotating sleeve 27 communicating with the hot calendering roller 24 is fixed on the other end face of the hot calendering roller 24. The end of the rotating sleeve 27 is rotatably mounted on the longitudinal inner wall of the calendering mounting vertical plate 25.

[0092] A heat insulation box 28 is fixed on the longitudinal outer wall of the calendering mounting vertical plate 25 located on the rear side. A circulating hot oil pipe 29 is fixed inside the heat insulation box 28. The circulating hot oil pipe 29 is serpentine and bends. The middle section of the circulating hot oil pipe 29 passes through two rotating sleeves 27 in sequence and extends into the interior of two hot calendering rollers 24.

[0093] A barrier agent dispersion box 30 is also fixedly installed between the two calendering mounting vertical plates 25. The barrier agent dispersion box 30 is located above the two hot calendering rollers 24 and is sleeved on the outer periphery of the melt fabric box 17. The lower two ends of the barrier agent dispersion box 30 are tapered and have discharge ports.

[0094] An isolation vertical plate 31 is fixed on the inner bottom surface of the barrier agent dispersion box 30. The isolation vertical plate 31 divides the interior of the barrier agent dispersion box 30 into left and right parts for adding different types of additives.

[0095] A horizontal cover plate 32 is fixed to the upper end face of the barrier agent dispersion box 30, and an additive tube 33 is fixed to each longitudinal outer wall of the barrier agent dispersion box 30.

[0096] Each hot calendering roll 24 is provided with a material blocking scraper 34 directly above it. The lower end of the material blocking scraper 34 is set close to the outer peripheral wall of the hot calendering roll 24, and the two longitudinal ends of the material blocking scraper 34 are respectively fixed on the longitudinal inner wall of the two calendering mounting vertical plates 25.

[0097] Below each hot calendering roll 24 is a cooling and shaping box 35. The cooling and shaping box 35 is a square box with a side opening. The opening ends of the two cooling and shaping boxes 35 are arranged opposite each other. The longitudinal ends of the cooling and shaping boxes 35 are respectively fixed to the longitudinal inner walls of the two calendering mounting vertical plates 25.

[0098] An air inlet seat 36 is fixed on the transverse side end face of the cooling and shaping box 35. A cooling air box 37 is fixed at the end of the air inlet seat 36. The cooling air box 37 is a longitudinally extended, closed square box. The cooling air box 37 is fixedly installed on the longitudinal inner wall of two rolling installation vertical plates 25.

[0099] A booster air pump 38 is fixed on the longitudinal outer wall of the rolling installation vertical plate 25, and the booster air pump 38 is connected to the cooling air box 37.

[0100] Each cooling and shaping box 35 is equipped with a buffer wheel 39 that rotates. After the cooling airflow enters the cooling and shaping box 35, it blows the buffer wheel 39 to rotate, and then the cooling airflow is dispersed and sprayed out, so as to avoid problems such as film warping and wrinkling caused by direct airflow during the cooling and shaping process, which damages the dense barrier structure.

[0101] Below the two cooling and shaping boxes 35, there is a path switching roller 40. The path switching roller 40 is rotatably positioned between two calendering mounting vertical plates 25. A stepper motor 41 is fixed on the longitudinal outer wall of the calendering mounting vertical plate 25 on the front side, directly opposite the path switching roller 40. The output shaft end of the stepper motor 41 passes through the calendering mounting vertical plate 25 and is fixed to the side end face of the path switching roller 40.

[0102] Three centrally symmetrical triangular guide seats 42 are fixed on the outer peripheral wall of the path switching roller 40.

[0103] On each side of the path switching roller 40, there is an active traction roller 43. On the calendering mounting vertical plate 25 located at the rear, there are two traction drive motors 44 respectively corresponding to the two active traction rollers 43. The output shaft end of the traction drive motor 44 passes through the calendering mounting vertical plate 25 and is fixed to the side end face of the active traction roller 43.

[0104] Each calendering mounting plate 25 has a square slot 45 on its lower two transverse outer walls. The square slot 45 is located below the active traction pressure roller 43. A square replacement slot 46 is fixedly installed in each square slot 45. A driven traction roller 47 is rotatably installed between two longitudinally opposite replacement slots 46. By replacing the driven traction roller 47 with one of different diameters, the gap between the driven traction roller 47 and the active traction pressure roller 43 can be adjusted, thereby providing secondary constraint on the thickness of the PVC film and achieving feed traction.

[0105] The corona activation assembly includes two longitudinally symmetrical activation mounting plates 48. The activation mounting plates 48 are T-shaped plates, and the lower ends of the activation mounting plates 48 are fixed to the upper surfaces of the two supporting base plates 23 on the left side.

[0106] The corona activation assembly also includes two symmetrical corona activation boxes 49. Each corona activation box 49 is a square box with a half-open side. The open ends of the two corona activation boxes 49 are arranged opposite each other. Each corona activation box 49 is equipped with a high-frequency corona treatment machine 50. An activation control box 51 is fixed on the longitudinal outer wall of the activation mounting plate 48 located on the front side. The activation control box 51 is electrically connected to the two high-frequency corona treatment machines 50. The two high-frequency corona treatment machines 50 can achieve double-sided synchronous corona treatment and improve the dyne value of the membrane surface.

[0107] On each of the horizontal sides of the corona activation box 49 located above, there is an upper positioning pressure roller 52. The upper positioning pressure roller 52 extends longitudinally and is detachably mounted on the two activation mounting plates 48.

[0108] Below each upper positioning roller 52, there is a corresponding lower positioning roller 53. The lower positioning roller 53 is rotatably mounted between two activated mounting plates 48. Two transversely symmetrical rotation drive motors 54 are fixed on the longitudinal outer wall of the activated mounting plate 48 located on the front side. The output shaft end of the rotation drive motor 54 passes through the activated mounting plate 48 and is fixed to the side end face of the corresponding lower positioning roller 53.

[0109] Three guide rollers 55 are arranged horizontally at equal intervals between the upper positioning roller 52 and the active traction roller 43. The same three guide rollers 55 are also arranged between the lower positioning roller 53 and the driven traction roller 47. The six guide rollers 55 are rotatably mounted between the two active mounting plates 48.

[0110] The leftmost end of the two activation mounting plates 48 is provided with a winding mechanism, which includes a collecting roller 56. A collecting drive motor 57 is fixed on the longitudinal outer wall of the activation mounting plate 48 located on the front side. The end of the output shaft of the collecting drive motor 57 passes through the activation mounting plate 48 and is fixed to the center of the side end face of the collecting roller 56.

[0111] An excess material removal mechanism and a deviation correction and positioning mechanism are respectively provided between the collecting roller 56 and the upper positioning pressure roller 52.

[0112] The scrap removal mechanism includes a longitudinally extending sliding mounting rod 58, on which two longitudinally symmetrical mounting knife holders 59 are slidably sleeved, and a cutting knife 60 is fixed on the lower surface of the mounting knife holder 59.

[0113] The alignment positioning mechanism includes two longitudinally symmetrical alignment mounting seats 61. The two alignment mounting seats 61 are located between the sliding mounting rod 58 and the collecting roller 56 and are telescopically mounted on the longitudinal inner wall of the active mounting plate 48. Each alignment mounting seat 61 is rotatably equipped with an alignment wheel 62.

[0114] The heat-bonding assembly includes two longitudinally symmetrical bonding mounting plates 63, the lower ends of which are fixed to the upper surfaces of the two supporting base plates 23 on the right side.

[0115] A feeding roller 64 is rotatably mounted on the upper middle part of the two attached vertical plates 63. Each attached vertical plate 63 has a feeding drive module 65 on its longitudinal outer wall to control the rotation of the feeding roller 64.

[0116] A bonding pressure roller 66 is provided directly below the feeding roller 64.

[0117] Each of the mounting vertical plates 63 has a square sliding limit opening 67 on its longitudinal outer wall near the bottom. A square lifting slide 68 is slidably fitted into each sliding limit opening 67. The bonding pressure roller 66 is rotatably mounted between two lifting slides 68. A rolling drive motor 69 is fixed on the longitudinal outer wall of the lifting slide 68 on the front side. The end of the output shaft of the rolling drive motor 69 passes through the lifting slide 68 and is fixed to the side end face of the bonding pressure roller 66.

[0118] Each sliding limit port 67 has a lifting drive module 70 on its upper and lower sides. The lifting drive module 70 is fixed on the longitudinal outer wall of the mounting vertical plate 63. Two vertical threaded rods 71 ​​are rotatably provided between the two vertically opposite lifting drive modules 70. The middle sections of the two vertical threaded rods 71 ​​pass through and are threadedly connected to the lifting slide block 68.

[0119] Two bonding conveying rollers 72 are provided on each of the left and right sides of the bonding pressure roller 66. A conveying drive motor 73 connected to and driven by the bonding conveying rollers 72 is fixed on the longitudinal outer wall of the bonding mounting vertical plate 63 located at the rear.

[0120] Two vertical plates 63 are fitted together. The upper part of the opening on the side near the calendering assembly is provided with a fixed side panel 74, and the upper part of the opening on the side away from the calendering assembly is provided with a swing opening and closing panel 75. By opening the swing opening and closing panel 75, the feeding roller 64 can be replaced, thereby completing the replenishment of raw material film.

[0121] A preheating box 76 is provided on the transverse outer wall of the fixed side panel 74. An arc-shaped electric heating tube 77 is provided inside the preheating box 76. A preheating fan 78 is provided on the transverse end face of the preheating box 76.

[0122] The right side of the heat-bonding assembly has two longitudinally symmetrical winding mounting plates 79. The winding mounting plates 79 are inverted L-shaped plates, and the lower end of the winding mounting plates 79 is fixed to the upper surface of the rightmost support base plate 23.

[0123] The same winding mechanism, excess material cutting mechanism and deviation correction and positioning mechanism are also provided on the winding mounting plate 79.

[0124] When using this invention: First, raw material mixing and extrusion plasticization are carried out: In the early stage of production, PVC environmentally friendly barrier raw materials with different formulations are put into four sets of feeding transfer boxes 13 respectively. The raw materials are accurately conveyed into the sealed hopper 8 through the feeding bend pipe 14. The mixing and stirring motor 10 at the top of the hopper 8 drives the stirring shaft 11 and the mixing blade 12 to run, and fully mix the various raw materials to achieve a uniform ratio of raw materials. The premixed raw materials fall into the plasticizing cylinder 6 below. The three sets of cylinder heaters 15 on the outer wall of the plasticizing cylinder 6 perform segmented constant temperature heating to gradually melt and plasticize the raw materials. At the same time, the power motor 4 above the extrusion worktable 3 drives the extrusion screw 7 inside the cylinder to rotate continuously, shearing, extruding and conveying the raw materials, so that the solid raw materials are transformed into PVC melt material with uniform texture and stable fluidity. The homogeneous molten material is continuously pushed to the molten material box 17, where it is distributed in a wide width through the internal melt flow channel. Finally, it is extruded vertically downward from the bottom material nozzle 18 to form a flat and continuous molten PVC film blank, providing a stable material source for subsequent calendering.

[0125] Next, the barrier additives are compounded and calendered: the molten film blank extruded from the fabric nozzle 18 falls into the calendering gap between two hot calendering rollers 24. Two calendering rolling motors 26 drive the two sets of hot calendering rollers 24 to rotate synchronously in opposite directions. The heat transfer medium is introduced from the outside into the circulating hot oil pipe 29. The middle section of the circulating hot oil pipe 29 extends into the interior of the two hollow hot calendering rollers 24 to achieve precise constant temperature control of the roller body. The molten material blank is rolled, stretched and shaped by the two hot calendering rollers 24 to form a basic PVC barrier film blank with uniform specifications. The barrier agent dispersion box 30 above the hot pressing roll 24 is divided into a double-compartment structure by the isolation vertical plate 31, which can store two different barrier agents at the same time. The agent is continuously replenished through the additive addition pipes 33 on both sides, and is evenly sprayed onto the surface of the film blank on both sides of the hot pressing roll 24 from the discharge ports at both ends of the lower part of the barrier agent dispersion box 30. This allows the functional barrier agent to be deeply integrated with the PVC molten film blank, effectively improving the density and barrier performance of the film.

[0126] Next, the film preform is cooled and shaped and flexibly guided: the film preform after completing the additive compounding is rotated and descends with the hot pressing roller 24. When it passes through two oppositely arranged cooling and shaping boxes 35, the booster air pump 38 is started to continuously deliver cooling air to the cooling air box 37. After the air is dispersed and buffered by the buffer wheel 39 in the cooling and shaping box 35, it is evenly and gently blown on the surface of the film, avoiding problems such as film warping, wrinkles and structural damage caused by local strong winds. While ensuring rapid shaping, the dense barrier structure of the film is well preserved. After cooling and shaping, the finished PVC substrate film is conveyed to the path switching roller 40 below. The stepper motor 41 drives the path switching roller 40 to rotate at a certain angle. The film path can be flexibly adjusted according to the actual production conditions and product processing requirements. The path switching roller 40 and the three sets of triangular guide seats 42 fixed on its surface can achieve precise guidance and path switching, and perform differentiated guidance and conveying of the shaped PVC substrate to realize flexible switching of processing modes.

[0127] When the production requirement is film surface modification treatment, the triangular guide seat 42 guides the PVC substrate to the left station to enter the corona activation process; when the production requirement is single-layer substrate heat lamination, the guide structure guides the film directly to the right heat lamination station to complete the secondary lamination process. Meanwhile, the equipment can adjust the rolling gap between the driven traction roller 47 and the active traction pressure roller 43 by replacing the driven traction roller 47 with one of different diameters, thereby constraining the thickness of the PVC film and achieving feed traction. When the PVC substrate film is subjected to double-sided corona activation: the PVC substrate conveyed to the left station by the guide enters between the upper and lower corona activation boxes 49. The activation control box 51 synchronously controls the two sets of high-frequency corona treatment machines 50 to carry out synchronous double-sided corona activation treatment on the upper and lower surfaces of the film, effectively improving the dyne value and surface activity of the film and enhancing the compatibility of the film for subsequent bonding, lamination and coating. During processing, the upper positioning roller 52, the lower positioning roller 53, and multiple sets of equally spaced guide rollers 55 limit and pull the film. The lower positioning roller 53 is driven by the rotation drive motor 54 to feed the film at a uniform speed to keep the film flat and taut and avoid slackness and deviation. After the substrate is activated by corona treatment, it is corrected, trimmed, and then wound up to produce the finished modified reinforced PVC barrier film.

[0128] When the PVC substrate film after being guided is conveyed to the right heat lamination station, the PET high barrier film roll is preloaded by the feeding roller 64 and the feeding drive module 65 controls the uniform unwinding speed; the lifting drive module 70 drives the vertical threaded rod 71 to rotate, which drives the lifting slide 68 to slide up and down along the sliding limit port 67 to adjust the spatial position of the lamination pressure roller 66. Before lamination, the PET high-barrier film passes through a preheating box 76, where it is uniformly preheated by an arc-shaped electric heating tube 77 and a preheating fan 78 to eliminate internal stress and improve the bonding effect. The bonding roller 66 is driven to move down to abut against the surface of the PET high-barrier film, and then tightly presses it onto the PVC substrate film to achieve precise alignment of the PET high-barrier film and the PVC substrate film. The bonding roller 66 driven by the roller drive motor 69 performs rolling to achieve tight thermal bonding and complete the thermal bonding process.

[0129] Finally, the film is corrected for edge trimming and finished product winding: The finished film that has been corona activated or thermally bonded is finally conveyed to the winding station at the end of the equipment. The film's lateral offset is monitored and corrected in real time by the correction and positioning mechanism to ensure that the film is accurately centered. The excess material removal mechanism drives the edge trimming knife 60 through the sliding mounting knife seat 59 to accurately cut the rough edges and excess material on both sides of the film and straighten the film width. Finally, the collecting drive motor 57 drives the collecting roller 56 to rewind at a uniform speed, completing the high-barrier PVC environmentally friendly composite film finished product after various processing steps.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A high-barrier PVC environmentally friendly composite film calendering and molding device, characterized in that: It includes a mixing, extrusion, and plasticizing unit and a calendering and molding composite heat-sealing unit arranged in a T-shape with vertical connections; The calendering-formed composite heat-bonding unit includes a calendering component, a corona activation component, and a heat-bonding component; The calendering assembly includes two transversely symmetrical and longitudinally extended hot calendering rolls. The hot calendering rolls are hollow rolls. Each of the two hot calendering rolls has a calendering mounting plate on each of its longitudinal sides. The two ends of the two hot calendering rolls are rotatably supported between the two calendering mounting plates. Each of the hot calendering rolls is provided with a cooling and shaping box below it. The two longitudinal ends of the cooling and shaping box are respectively fixed to the longitudinal inner walls of the two calendering mounting vertical plates. Each cooling and shaping box is provided with a buffer wheel that rotates. Below the two cooling and shaping boxes, there is a path switching roller. The path switching roller is rotatably positioned between the two calendering mounting vertical plates. Three centrally symmetrical triangular guide seats are fixed on the outer peripheral wall of the path switching roller. Each of the two sides of the path switching roller is provided with an active traction pressure roller, and a driven traction roller is provided directly below the active traction pressure roller. The heat bonding assembly includes two longitudinally symmetrical bonding mounting plates. A feeding roller is rotatably mounted on the upper middle part of the two bonding mounting plates. A bonding pressure roller is raised and lowered directly below the feeding roller. Two bonding conveying rollers are provided on each of the left and right sides of the bonding pressure roller. A fixed side panel is provided at the top of the opening on one side of the two attached vertical plates, and a swing-opening and closing panel is provided at the top of the opening on the other side. A preheating box is provided on the transverse outer wall of the fixed side panel, an arc-shaped electric heating tube is provided inside the preheating box, and a preheating fan is provided on the transverse end face of the preheating box. The mixing, extrusion, and plasticizing unit includes two horizontally symmetrical integrated circuit boxes. Each integrated circuit box is a square box with its lower end grounded and extending vertically. A control host is fixed on the longitudinal outer wall of one of the integrated circuit boxes. An extrusion worktable is provided between the two integrated circuit boxes, and the two lateral ends of the extrusion worktable are fixedly supported on the lateral outer walls of the two integrated circuit boxes; The extrusion worktable is equipped with a screw-type plasticizing extruder, which includes a power motor. The power motor is fixed to one longitudinal end of the upper surface of the extrusion worktable, and a reduction gearbox is provided on one longitudinal side of the power motor. The reduction gearbox is also fixed to the upper surface of the extrusion worktable. The screw-type plasticizing extruder also includes a longitudinally extending plasticizing barrel, which is fixedly supported on the upper surface of the extrusion worktable. The end of the plasticizing barrel near the gearbox is closed, and an extrusion screw is rotatably installed inside the plasticizing barrel. Three barrel heaters are fixed to the circumferential outer wall of the plasticizer barrel; The output shaft of the power motor passes through the closed end face of the gearbox and the plasticizing cylinder in sequence and is fixed to the end of the extrusion screw; Two longitudinally symmetrical, laterally extending mounting racks are provided on one longitudinal side of the two integrated circuit boxes. The two mounting racks are grounded. Each mounting rack has a limiting stop fixed at each of its two transverse ends on its upper surface. A guide slide rod is fixed between the two transversely opposite limiting stops. Each of the guide slide rods is slidably mounted with several adjusting slide blocks, and the upper surfaces of two longitudinally opposite adjusting slide blocks are fixed with supporting base plates; The corona activation assembly includes two longitudinally symmetrical activation mounting plates, each of which is a T-shaped plate. The lower end of the activation mounting plate is fixed to the upper surface of the two supporting base plates on the left side. The corona activation assembly also includes two corona activation boxes that are symmetrically arranged vertically. Each corona activation box is a square box with a half-open side. The open ends of the two corona activation boxes are arranged opposite each other. Each corona activation box is equipped with a high-frequency corona treatment machine. An activation control box is fixed on the longitudinal outer wall of the activation mounting plate located on the front side. The activation control box is electrically connected to the two high-frequency corona treatment machines respectively. The corona activation box located at the top has an upper positioning pressure roller on each of its horizontal sides. The upper positioning pressure roller extends longitudinally and is detachably mounted on the two activation mounting plates. Below each of the upper positioning rollers, there is a corresponding lower positioning roller. The lower positioning rollers are rotatably mounted between the two activated mounting plates. Two transversely symmetrical rotation drive motors are fixed on the longitudinal outer wall of the activated mounting plate located on the front side. The output shaft ends of the rotation drive motors pass through the activated mounting plate and are fixed to the side end face of the corresponding lower positioning roller. Three guide rollers are arranged at equal intervals in the transverse direction between the upper positioning pressure roller and the active traction pressure roller. The same three guide rollers are also arranged between the lower positioning pressure roller and the driven traction roller. The six guide rollers are rotatably installed between the two active mounting plates.

2. The high-barrier PVC environmentally friendly composite film calendering device according to claim 1, characterized in that: A hopper is fixed on the upper surface of the plasticizer barrel near the gearbox. The upper end of the hopper is open, and the lower end of the hopper is connected to the plasticizer barrel. A closed end cap is fixed at the upper opening of the hopper. A mixing motor is fixed at the center of the upper surface of the closed end cover. The output shaft of the mixing motor passes downward through the closed end cover and is fixed with a mixing shaft. Four centrally symmetrical mixing blades are fixed on the mixing shaft. Four centrally symmetrical feeding transfer boxes are fixed on the circumferential outer wall of the hopper. The feeding transfer boxes are connected to the hopper. Each feeding transfer box has a feeding bend fixed at its lower end. The four feeding bends are fixed on the longitudinal outer walls of the two integrated circuit boxes. An extruder head is fixed to the open end of the plasticizing barrel. A longitudinally extending molten material box is fixed to the outer end face of the extruder head. A material feeding nozzle is fixed to the lower end of the molten material box. A melt flow channel communicating with the material feeding nozzle is opened inside the molten material box. The two hot calendering rollers are located on the lower side of the molten fabric box, and the two hot calendering rollers are closely attached with a calendering gap reserved in the middle facing the fabric nozzle.

3. The high-barrier PVC environmentally friendly composite film calendering device according to claim 1, characterized in that: The supporting base plate is a longitudinally extending square plate, and the upper surface of the supporting base plate is screwed with positioning bolts for fixing the adjusting slide. The lower end of the calendering mounting vertical plate is fixed to the upper surface of the two middle supporting base plates; The lower end of the mounting plate is fixed to the upper surface of the two supporting base plates on the right side.

4. The high-barrier PVC environmentally friendly composite film calendering device according to claim 2, characterized in that: Two calendering rolling motors are fixed on the longitudinal outer wall of the calendering mounting vertical plate located on the front side. The output shaft of the calendering rolling motor passes through the calendering mounting vertical plate and is fixed to the closed end face of the hot calendering roller. A rotating sleeve communicating with the hot calendering roller is fixed on the other end face of the hot calendering roller. The end of the rotating sleeve is rotatably mounted on the longitudinal inner wall of the calendering mounting vertical plate. A heat insulation box is fixed on the longitudinal outer wall of the calendering mounting vertical plate located on the rear side. A circulating hot oil pipe is fixed inside the heat insulation box. The circulating hot oil pipe is serpentine and its middle section passes through the two rotating sleeves and extends into the interior of the two hot calendering rolls. A barrier agent dispersion box is also fixedly installed between the two calendering mounting vertical plates. The barrier agent dispersion box is located above the two hot calendering rollers and is sleeved on the outer periphery of the molten fabric box. The lower two ends of the barrier agent dispersion box are tapered and have discharge ports. An isolation vertical plate is fixed on the inner bottom surface of the barrier agent dispersion box, which divides the interior of the barrier agent dispersion box into left and right parts for adding different types of additives. A horizontal cover plate is fixed to the upper end face of the barrier agent dispersion box, and an agent addition tube is fixed to each longitudinal outer wall of the barrier agent dispersion box. Each of the hot calendering rolls is provided with a material-blocking scraper directly above it. The lower end of the material-blocking scraper is set close to the outer peripheral wall of the hot calendering roll, and the two longitudinal ends of the material-blocking scraper are respectively fixed to the longitudinal inner walls of the two calendering mounting vertical plates.

5. The high-barrier PVC environmentally friendly composite film calendering device according to claim 1, characterized in that: The cooling and shaping box is a square box with a side opening, and the opening ends of the two cooling and shaping boxes are arranged opposite each other; An air inlet seat is fixed to the transverse side end face of the cooling and shaping box, and a cooling air box is fixed to the end of the air inlet seat. The cooling air box is a longitudinally extended, closed square box, and the cooling air box is fixedly installed on the longitudinal inner wall of the two calendering mounting vertical plates. A booster air pump is fixed on the longitudinal outer wall of the rolling installation vertical plate, and the booster air pump is connected to the cooling air box.

6. The high-barrier PVC environmentally friendly composite film calendering apparatus according to claim 1, characterized in that: A stepper motor is fixed on the longitudinal outer wall of the calender mounting vertical plate located on the front side, directly opposite the path switching roller. The end of the output shaft of the stepper motor passes through the calender mounting vertical plate and is fixed to the side end face of the path switching roller. On the rear side of the calender mounting vertical plate, two traction drive motors are fixed to the two active traction pressure rollers respectively. The output shaft end of the traction drive motor passes through the calender mounting vertical plate and is fixed to the side end face of the active traction pressure roller. Each of the calendering mounting vertical plates has a square slot on its lower two transverse outer walls. The square slot is located below the active traction pressure roller. A square replacement card is fixedly installed in each square slot. The driven traction roller is rotatably installed between two longitudinally opposite replacement card seats.

7. The high-barrier PVC environmentally friendly composite film calendering apparatus according to claim 1, characterized in that: A winding mechanism is rotatably provided at the leftmost end of the two activated mounting plates. The winding mechanism includes a collecting roller. A collecting drive motor is fixed on the longitudinal outer wall of the activated mounting plate located on the front side. The end of the output shaft of the collecting drive motor passes through the activated mounting plate and is fixed to the center of the side end face of the collecting roller. An excess material removal mechanism and a deviation correction and positioning mechanism are respectively provided between the collecting roller and the upper positioning pressure roller; The scrap removal mechanism includes a longitudinally extending sliding mounting rod, on which two longitudinally symmetrical mounting knife seats are slidably sleeved, and a cutting knife is fixed on the lower surface of the mounting knife seats; The correction and positioning mechanism includes two longitudinally symmetrical correction mounting seats. The two correction mounting seats are located between the sliding mounting rod and the collecting roller and are telescopically mounted on the longitudinal inner wall of the activation mounting plate. Each correction mounting seat is rotatably equipped with a correction wheel. The right side of the heat-bonding assembly is provided with two longitudinally symmetrical roll-up mounting plates. The roll-up mounting plates are inverted L-shaped plates, and the lower ends of the roll-up mounting plates are fixed to the upper surface of the rightmost support base plate. The winding mounting plate is also equipped with the same winding mechanism, the excess material removal mechanism, and the deviation correction and positioning mechanism.

8. The high-barrier PVC environmentally friendly composite film calendering apparatus according to claim 1, characterized in that: Each of the attached mounting vertical plates is provided with a feeding drive module on its longitudinal outer wall to control the rotation of the feeding roller; Each of the bonding mounting vertical plates has a square sliding limit opening on its longitudinal outer wall near the bottom. A square lifting slide is slidably fitted into each sliding limit opening. The bonding pressure roller is rotatably mounted between two of the lifting slides. A rolling drive motor is fixed on the longitudinal outer wall of the lifting slide located on the front side. The end of the output shaft of the rolling drive motor passes through the lifting slide and is fixed to the side end face of the bonding pressure roller. Each of the sliding limit ports is provided with a lifting drive module on its upper and lower sides. The lifting drive module is fixed on the longitudinal outer wall of the fitting mounting vertical plate. Two vertical threaded rods are rotatably provided between the two vertically opposite lifting drive modules. The middle sections of the two vertical threaded rods pass through and are threadedly connected to the lifting slide. A conveying drive motor that is connected and drives the bonding conveying roller is fixed on the longitudinal outer wall of the bonding mounting vertical plate located on the rear side.

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