Preparation method and preparation system of composite decorative film

Abstract

The invention discloses a preparation method and a preparation system of a composite decorative film, and relates to the technical field of decorative film preparation, and the preparation method of the composite decorative film comprises the steps of raw material preparation, base layer film treatment, decorative layer preparation, functional layer preparation, multilayer film compounding, pre-compounding, post-treatment and the like to realize preparation of the composite decorative film. The device further comprises a base, an unwinding module, a winding module, a compounding module and a pre-compounding mechanism, the base layer film and the functional film are compounded together in a pre-compounding manner, and then the decorative film is compounded on the functional film, so that the compounding quality of each layer is conveniently controlled, and insufficient pressure caused by simultaneous coincidence of multiple layers is prevented; the transmission shaft drives the two compounding rollers to rotate towards the film and simultaneously drives the first smoothing plate and the second smoothing plate to swing in a reciprocating manner, so that the edge part of the film to be compounded is smoothed, and wrinkles during compounding are prevented; through the transmission shaft, the surface of the film can be cleaned through the cleaning roller when pre-compounding is not needed, and the compounding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of decorative film preparation, and in particular to a preparation method and a preparation system for a composite decorative film. Background Art

[0002] With the advancement of science and technology and the improvement of living standards and aesthetic tastes, people's demand for improving the quality of life is becoming more and more urgent, the requirements for decorative materials are becoming higher and higher, and the pursuit of personalized quality of product appearance is becoming more and more diverse. Decorative film materials, as a widely used decorative material, came into being under such circumstances. This material mainly plays a decorative and protective role. In addition to its aesthetic effect, it also has some other properties, such as: heat insulation, warmth retention, UV protection, safety, explosion-proof, anti-theft, bulletproof and privacy. Developing decorative film materials with excellent performance can effectively improve the appearance of products, give people a sense of beauty, improve people's aesthetic comfort, and meet people's personalized needs for decorative materials;

[0003] For example, announcement number CN102689473A discloses a linen PVC decorative film, which is composed of three layers of PVC base film, resin glue and linen tightly compounded from bottom to top; the number of layers of the composite decorative film is not fixed, and usually has three layers, four layers, five layers or more structures;

[0004] During the production of existing decorative films, multiple layers of raw materials are often rolled and laminated through a set of laminating rollers. Although the lamination operation of multiple layers can be completed at one time, this method has high requirements on equipment, is not easy to control the lamination quality of each layer, has poor production flexibility, and is prone to insufficient pressure during lamination. Summary of the invention

[0005] The object of the present invention is to provide a method and system for preparing a composite decorative film to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a method for preparing a composite decorative film, comprising the following steps:

[0007] S1: prepare raw materials, select PET film as the base film, select polyvinyl chloride film as the surface decorative film, and use polypropylene film as the functional film;

[0008] S2: base film treatment, decorative layer preparation, functional layer preparation, corona treatment of the base film, printing of color ink on the base film according to the design pattern, and application of antibacterial material to the base film or the decorative layer by coating method;

[0009] S3: Multilayer film lamination, using a lamination module to pre-laminate the base film and the functional layer film, and then laminating the laminated base film, functional film and decorative film together;

[0010] S4: Post-processing, drying the composite decorative film to remove the solvent in the binder and improve the performance and stability of the film.

[0011] A system for preparing a composite decorative film is used to achieve the multi-layer film composite in the above-mentioned composite decorative film preparation method, comprising a base and a reeling module and a winding module arranged thereon, and also a composite module, the composite module comprising a rolling mechanism and a pre-composite mechanism, the pre-composite mechanism comprising two rotatably arranged pre-composite rollers, one side of the pre-composite roller is rotatably provided with a transmission shaft, the transmission shaft is provided with a threaded groove, the transmission shaft is threadedly connected with a movable sleeve, and the movable sleeve is fixedly provided with two spiral blades for driving the pre-composite roller to rotate.

[0012] Preferably, connecting plates are rotatably provided at both ends of each of the pre-combined rollers, and a cleaning roller is rotatably provided between the two connecting plates.

[0013] Preferably, a fixed disk is fixedly provided at one end of each cleaning roller and pre-compound roller close to the transmission shaft, and a plurality of protruding rods adapted to the spiral blades are fixedly provided on the outer peripheral surface of each fixed disk.

[0014] Preferably, a first fixed block and a second fixed block are fixedly provided at both ends of the movable sleeve, an abutment plate is rotatably provided on the first fixed block and the second fixed block, a limiting plate is fixedly provided on the upper surface of the first fixed block and the second fixed block, a first torsion spring is fixedly provided between the first fixed block, the second fixed block and the abutment plate, and an abutment rod is fixedly provided on the side of the transmission shaft away from the cleaning roller.

[0015] Preferably, a sliding frame is rotatably provided on the movable sleeve, the sliding frame is slidably connected to the abutment rod, tooth plates are fixedly provided on both sides of the sliding frame, and a half gear is fixedly provided on one side of each connecting plate away from the cleaning roller.

[0016] Preferably, a rectangular block is fixedly provided on each of the half gears.

[0017] Preferably, a reciprocating spiral groove is formed at one end of the transmission shaft away from the winding mechanism, and a moving ring adapted to the reciprocating spiral groove is provided at the end of the transmission shaft. Two rotating columns are rotatably provided on the base, and a first caressing plate and a second caressing plate are slidably provided on each of the rotating columns, and a guide rail is fixedly provided on each of the first caressing plates, and a fixing frame is fixedly provided on the moving ring, and the fixing frame is slidably connected to the guide rail at one end away from the moving ring.

[0018] Preferably, a transmission belt is sleeved between the two rotating columns.

[0019] Preferably, two support plates are fixedly arranged on the base, and the first lifting plate and the second lifting plate are rotatably arranged on the side of each support plate close to the rotating column, and a support rod is rotatably arranged on each first lifting plate and the second lifting plate, and a second torsion spring is fixedly arranged between each of the first lifting plate, the second lifting plate and the support rod, and one end of each support rod away from the second torsion spring is fixedly connected to the support plate, and a lifting rod is fixedly arranged on one end of each of the first caressing plate and the second caressing plate close to the rotating column.

[0020] In the above technical scheme, the present invention provides a preparation method and preparation system of a composite decorative film, which has the following beneficial effects: the base film and the functional film are first compounded together by pre-compounding, and then the decorative film is compounded on the functional film, so as to facilitate the control of the compounding quality of each layer, increase production flexibility, and prevent the pressure from being insufficient due to the simultaneous compounding of multiple layers; the two compounding rollers are driven by the transmission shaft to rotate toward the film, and the first smoothing plate and the second smoothing plate are driven to swing back and forth, so as to smooth the edges of the film to be compounded, and wrinkles are prevented during compounding; the movable sleeve is driven to move by the forward and reverse rotation of the transmission shaft so that the cleaning roller and the pre-compounding roller can switch positions, so that the film surface can be cleaned by the cleaning roller when pre-compounding is not required, thereby increasing the compounding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the structure of a three-layer film composite provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a double-layer membrane composite provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a pre-combined roller provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a transmission belt provided by an embodiment of the present invention;

[0026] Figure 5 A schematic structural diagram of a first caressing plate provided in an embodiment of the present invention;

[0027] Figure 6 The embodiment of the present invention provides Figure 5 A magnified view of the structure at center A;

[0028] Figure 7 A schematic diagram of the structure of a first lifting plate provided in an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the structure of a transmission shaft provided by an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of a tooth plate provided in an embodiment of the present invention;

[0031] Fig.10 A schematic structural diagram of a movable sleeve provided in an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of the structure of a thread groove provided in an embodiment of the present invention;

[0033] Fig.12 A schematic structural diagram of an abutment ball provided in an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Winding module; 2. Rolling mechanism; 3. First unwinding roller; 4. Second unwinding roller; 5. Third unwinding roller; 6. Servo motor; 7. Base; 8. Guide roller; 10. Transmission shaft; 11. Thread groove; 12. Moving sleeve; 13. First fixed block; 131. Second fixed block; 14. Abutment plate; 15. First torsion spring; 16. Limiting plate; 17. Abutment rod; 18. Sliding frame; 21. Spiral blade; 22. Fixed plate; 23. Protruding rod; 24. Connecting plate ; 25. Half gear; 251. Rectangular block; 26. Tooth plate; 27. Pre-compound roller; 28. Cleaning roller; 31. Reciprocating spiral groove; 32. Moving ring; 321. Abutment ball; 33. Fixed frame; 34. First caressing plate; 35. Second caressing plate; 36. Guide rail; 37. Rotating column; 38. Spring; 39. Transmission belt; 41. First lifting plate; 42. Second lifting plate; 43. Support plate; 44. Support rod; 45. Second torsion spring; 46. Lifting rod. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] See also Figure 1-12 , a method for preparing a composite decorative film, comprising the following steps:

[0038] S1: Prepare raw materials, select PET film as the base film, select polyvinyl chloride film as the surface decorative film, and use polypropylene film as the functional film; PET film has good mechanical properties, optical properties and dimensional stability, polyvinyl chloride film has certain flexibility and can adapt to the surface of the decorated object of different shapes, and polypropylene film has the function of inhibiting the growth of microorganisms such as bacteria and mold, so as to keep the surface of the decorative film clean and hygienic;

[0039] S2: base film treatment, decorative layer preparation, functional layer preparation, corona treatment of the base film; improving its surface energy and enhancing the bonding force with the decorative layer; using printing equipment to print colored ink on the base film according to the design pattern; applying antibacterial materials to the base film or the decorative layer by coating and other methods to inhibit the growth of bacteria;

[0040] S3: Multilayer film lamination, using a lamination module to pre-laminate the base film and the functional layer film, and then laminating the laminated base film, functional film and decorative film together;

[0041] S4: Post-processing: drying the composite decorative film, removing the solvent in the adhesive, improving the performance and stability of the film, and performing subsequent processing such as slitting and winding of the decorative film to meet different application requirements.

[0042] A preparation system for a composite decorative film, used for realizing the multi-layer film compounding in the preparation method of the composite decorative film, comprising a base 7 and an unwinding module and a winding module 1 arranged thereon, and also comprising a compounding module, the compounding module comprising a rolling mechanism 2 and a pre-compounding mechanism, the pre-compounding mechanism comprising two pre-compounding rollers 27 arranged to rotate, a transmission shaft 10 is rotatably arranged on one side of the pre-compounding roller 27, a thread groove 11 is provided on the transmission shaft 10, a movable sleeve 12 is threadedly connected to the transmission shaft 10, and two movable sleeves 12 are fixedly arranged on the movable sleeve 12 for driving the pre-compounding roller 27 The spiral blade 21 rotates; the unwinding module includes a first unwinding roller 3, a second unwinding roller 4, and a third unwinding roller 5. When the decorative layer, the functional layer, and the base film need to be composited at the same time, the first unwinding roller 3 is used to unwind the top decorative film, the second unwinding roller 4 is used to unwind the functional film of the middle layer, and the third unwinding roller 5 is used to unwind the bottom base film. The unwinding module, the winding module 1, and the composite module are all arranged on the base 7. The rolling mechanism 2 includes two final composite rollers that are rotatably arranged on the base 7, which are not marked in the figure. The base film and the functional film are composited first by the pre-composite mechanism. The decorative film is then composited with the functional film and the base film through two final composite rollers. A servo motor 6 is fixedly arranged on the base 7. The output end of the servo motor 6 is fixedly connected to the transmission shaft 10. Two spiral leaves 21 are fixedly arranged at both ends of the movable sleeve 12. The middle part of the movable sleeve 12 has a threaded portion that is adapted to the thread groove 11 and is not marked in the figure. When in use, the base film is aligned with the functional film and passed through the middle of the two pre-composite rollers 27. The transmission shaft 10 is driven to rotate by the servo motor 6. When the transmission shaft 10 rotates, it first passes through the thread groove 11 The movable sleeve 12 is driven to move, so that the spiral leaves 21 abut against the two pre-composite rollers 27. When the corresponding spiral leaves 21 abut against the pre-composite rollers 27, the threaded portion in the movable sleeve 12 abuts against the end of the thread groove 11 on the transmission shaft 10. At this time, when the transmission shaft 10 rotates, it drives the movable sleeve 12 to rotate, so that the two spiral leaves 21 drive the two pre-composite rollers 27 to rotate clockwise, and then the functional film and the base film are compounded. Two guide rollers 8 are arranged on the base 7, and the film unwound from the second unwinding roller 4 and the third unwinding roller 5 passes through the middle of the two guide rollers 8.

[0043] Specifically, a connecting plate 24 is rotatably provided at both ends of each pre-combination roller 27, and a cleaning roller 28 is rotatably provided between the two connecting plates 24; the cleaning roller 28 is arranged between the connecting plates 24 at both ends of the same pre-combination roller 27. When three layers of film need to be composited simultaneously, the two pre-combination rollers 27 are placed on both sides of the film to be composited. When only two layers of film need to be composited, the film is unwound by the first unwinding roller 3 and the second unwinding roller 4, and composited by the two final composite rollers on the rolling mechanism 2. During composite, each connecting plate 24 is rotated to rotate the two cleaning rollers 28 away from the film to be composited until they are in contact with the film to be composited. At this time, the drive shaft 10 is driven to rotate by the servo motor 6, so that the spiral blade 21 drives the two cleaning rollers 28 to rotate counterclockwise, thereby removing dust and stains on the film passing through the middle of the two cleaning rollers 28.

[0044] In another embodiment of the present invention: each cleaning roller 28 and pre-compounding roller 27 is fixedly provided with a fixed disk 22 at one end close to the transmission shaft 10, and each fixed disk 22 is fixedly provided with a plurality of protruding rods 23 adapted to the spiral blades 21 on the outer peripheral surface; each fixed disk 22 is rotatably provided at both ends of the connecting plate 24, and each fixed disk 22 is provided on one side of the connecting plate 24 close to the cleaning roller 28. When the servo motor 6 drives the transmission shaft 10 to rotate, it drives the movable sleeve 12 to move through the thread groove 11. When the movable sleeve 12 moves, it drives the two spiral blades 21 to move, so that the spiral blades 21 abut against the corresponding protruding rods 23. When the movable sleeve 12 moves to the end of the thread groove 11, it continues to drive the transmission shaft 10 to rotate through the servo motor 6, which drives the movable tower to rotate together. At this time, the spiral blades 21 also rotate accordingly, and the corresponding fixed disks 22 are driven to rotate through the abutment between the spiral blades 21 and the protruding rods 23, thereby driving the pre-compounding roller 27 or the cleaning roller 28 to rotate.

[0045] In another embodiment of the present invention: a first fixed block 13 and a second fixed block 131 are respectively fixedly provided at both ends of the movable sleeve 12, an abutment plate 14 is rotatably provided on the first fixed block 13 and the second fixed block 131, a limit plate 16 is fixedly provided on the upper surface of the first fixed block 13 and the second fixed block 131, a first torsion spring 15 is fixedly provided between the first fixed block 13, the second fixed block 131 and the abutment plate 14, an abutment rod 17 is fixedly provided on the side of the transmission shaft 10 away from the cleaning roller 28; two spiral leaves 21 are provided between the first fixed block 13 and the second fixed block 131, the width of the spiral leaves 21 is smaller than the distance between the end of the abutment plate 14 and the movable sleeve 12, when it is necessary to compound the decorative layer, the base film and the functional layer together, the transmission shaft 10 is driven to rotate forward by the servo motor 6, such as Figure 8As shown, when the transmission shaft 10 rotates forward, the abutment plate 14 on the first fixed block 13 abuts against the abutment rod 17. At this time, the transmission shaft 10 that rotates forward causes the movable sleeve 12 to move to the left through the limitation of the abutment rod 17. As the movable sleeve 12 moves, the spiral leaf 21 at the right end abuts against the convex rod 23 at the end of the pre-compound roller 27. At this time, the two pre-compound rollers 27 approach each other. When the spiral leaf 21 at the right end moves to the middle of the two pre-compound rollers 27, the movable sleeve 12 moves to the left to the leftmost end of the thread groove 11, and the abutment plate 14 on the first fixed block 13 moves to the end of the abutment rod 17 and separates from the abutment rod 17. At this time, when the transmission shaft 10 rotates, it will drive the movable sleeve 12 to rotate together When the movable sleeve 12 is in forward transmission, the abutment plate 14 on the second fixed block 131 abuts against the abutment rod 17, which will cause rotation to prevent the abutment plate 14 on the second fixed block 131 from hindering the rotation of the movable sleeve 12. At this time, the cooperation between the spiral blade 21 at the right end and the convex rod 23 on the two pre-compounding rollers 27 makes the upper pre-compounding roller 27 rotate clockwise, and the lower pre-compounding roller 27 rotates counterclockwise, so as to pre-compound the base film and the functional film. When it is necessary to use a separate composite method to composite the decorative film, the film to be composited is unwound from the second unwinding roller 4 and passed through the middle of the two pre-compounding rollers 27, and then the film unwound from the first unwinding roller 3 is combined with the film unwound from the two pre-compounding rollers 27. The films passing through the two pre-compounding rollers 27 are aligned and pass through the middle of the two final composite rollers of the rolling mechanism 2. At this time, the servo motor 6 is started to reverse. When the servo motor 6 reverses, it drives the transmission shaft 10 to reverse. When the transmission shaft 10 reverses, the abutment plate 14 on the second fixed block 131 rotates one circle and abuts against the abutment rod 17. The transmission shaft 10 continues to reverse. The abutment rod 17 cooperates with the abutment plate 14 on the second fixed block 131 to make the movable sleeve 12 move to the right. Similarly, when the movable sleeve 12 moves to the right, the spiral leaf 21 at the left end gradually moves between the two pre-compounding rollers 27. In the process of the movable sleeve 12 moving to the right, each connecting plate 24 is rotated to make each cleaning roller 2 8 switches positions with the pre-compounding roller 27, so that the two cleaning rollers 28 are in contact with the film to be compounded. When the spiral blade 21 at the left end moves between the two cleaning rollers 28, the abutment plate 14 on the second fixed block 131 is separated from the abutment rod 17, and the transmission shaft 10 continues to be reversed. At this time, the threaded portion in the movable sleeve 12 moves to the right end of the thread groove 11. When the transmission shaft 10 is reversed, the movable sleeve 12 is driven to reverse. When the movable sleeve 12 is reversed, the spiral blade 21 at the left end causes the upper cleaning roller 28 to rotate counterclockwise, and the lower cleaning roller 28 to rotate clockwise, so that the dust and oil stains on the film passing between the two cleaning rollers 28 are cleaned off, thereby improving the quality of the compounding.

[0046] Furthermore, a sliding frame 18 is rotatably provided on the movable sleeve 12, and the sliding frame 18 is slidably connected to the abutment rod 17. Tooth plates 26 are fixedly provided on both sides of the sliding frame 18, and a half gear 25 is fixedly provided on one side of each connecting plate 24 away from the cleaning roller 28; the half gear 25 is fixedly provided in the middle position of the connecting plate 24, such as Figure 8 As shown, when the movable sleeve 12 moves to the right, the sliding frame 18 is driven to move to the right through the movable sleeve 12, and when the sliding frame 18 moves to the right, it drives the two tooth plates 26 to move to the right. During the movement of the two tooth plates 26 to the right, they mesh with the corresponding plate gears respectively, so that the two tooth plates 26 drive the two half gears 25 to rotate 180 degrees, and then the positions of the cleaning rollers 28 and the pre-compounding rollers 27 are switched. The number of teeth on the tooth plate 26 is consistent with the number of teeth on the half gear 25. When the decorative layer, the functional layer, and the base film need to be compounded together, the servo motor 6 drives the transmission shaft 10 to rotate forward to move the movable sleeve 12 and the tooth plate 26 to the left. At this time, the cooperation of the tooth plate 26 and the half gear 25 can make the two pre-compounding rollers 27 that are far away from each other approach each other, so that the base film and the functional layer film can be pre-compounded, thereby increasing the efficiency and quality of the compounding.

[0047] Specifically, a rectangular block 251 is fixedly provided on each half gear 25; each tooth plate 26 has a meshing portion and a smooth portion. When the tooth plate 26 drives the half gear 25 to rotate 180 degrees, the smooth portion of the tooth plate 26 abuts against the rectangular block 251, so that when the spiral blade 21 drives the pre-compounding roller 27 or the cleaning roller 28 to rotate, the connecting plate 24 can remain stable, thereby ensuring the stability of the pressure of the pre-compounding roller 27 during compounding.

[0048] In another embodiment of the present invention: a reciprocating spiral groove 31 is formed at one end of the transmission shaft 10 away from the winding mechanism, a moving ring 32 adapted to the reciprocating spiral groove 31 is provided at the end of the transmission shaft 10, two rotating columns 37 are rotatably provided on the base 7, a first caressing plate 34 and a second caressing plate 35 are slidably provided on each rotating column 37, a guide rail 36 is fixedly provided on each first caressing plate 34, a fixed frame 33 is fixedly provided on the moving ring 32, and one end of the fixed frame 33 away from the moving ring 32 is slidably connected to the guide rail 36; in the initial state, each first caressing plate 34 and the second caressing plate 35 are inclined, the first caressing plate 34 and the second caressing plate 35 on the same side are aligned up and down, the two first caressing plates 34 are parallel, an abutting ball 321 adapted to the reciprocating spiral groove 31 is fixedly provided inside the moving ring 32, and when the transmission shaft 10 rotates, the abutting ball 321 cooperates with the reciprocating spiral groove 31 to make the moving ring 32 move along the transmission ring 32. When the fixing frame 33 moves in the direction away from the connecting plate 24, the first caressing plate 34 close to the driving shaft 10 is driven by the guide rail 36 to move out from the surface of the film to be compounded, so that the corresponding second caressing plate 35 is driven to rotate synchronously by the rotating column 37, so as to smooth the wrinkles on the edge of the film. When the fixing frame 33 moves in the direction close to the connecting plate 24, the corresponding first caressing plate 34 and second caressing plate 35 are rotated again to the film to be compounded through the cooperation of the fixing frame 33 and the corresponding guide rail 36, and the film to be compounded passes between the first caressing plate 34 and the second caressing plate 35. As the driving shaft 10 rotates continuously, the moving ring 32 and the fixing frame 33 continuously reciprocate, so that the first caressing plate 34 and the second caressing plate 35 continuously swing back and forth, so as to smooth the wrinkles on both sides of the film.

[0049] Specifically, a transmission belt 39 is sleeved between the two rotating columns 37; when the rotating column 37 close to the transmission shaft 10 rotates, the transmission belt 39 drives the other rotating column 37 to rotate, so that each of the first caressing plate 34 and the second caressing plate 35 can reciprocate;

[0050] Two support plates 43 are fixedly arranged on the base 7, and a first lifting plate 41 and a second lifting plate 42 are rotatably arranged on one side of each support plate 43 close to the rotating column 37, and a support rod 44 is rotatably arranged on each first lifting plate 41 and the second lifting plate 42, and a second torsion spring 45 is fixedly arranged between each first lifting plate 41, the second lifting plate 42 and the support rod 44, and one end of each support rod 44 away from the second torsion spring 45 is fixedly connected to the support plate 43, and each first caressing plate 34 and the second caressing plate The first and second lifting plates 41 and 42 on the same support plate 43 are fixedly provided with lifting rods 46 at one end close to the rotating column 37; in the initial state, the first lifting plate 41 and the second lifting plate 42 on the same support plate 43 are in a V shape, and the two support plates 43 are located on both sides of the base 7. When the first and second lifting plates 34 and 35 rotate away from the ends of the rotating column 37 toward the direction close to the transmission shaft 10, the two lifting rods 46 pass through between the corresponding first and second lifting plates 41 and 42, so that the first and second lifting plates 34 and 35 can The first and second plates 35 are in contact with each other when the first and second plates 34 and 35 are in contact with each other.

[0051] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a composite decorative film, characterized in that: The following steps are involved: S1: prepare raw materials, select PET film as the base film, select polyvinyl chloride film as the surface decorative film, and use polypropylene film as the functional film; S2: base film treatment, decorative layer preparation, functional layer preparation, corona treatment of the base film, printing of color ink on the base film according to the design pattern, and application of antibacterial material to the base film or the decorative layer by coating method; S3: Multilayer film lamination, using a lamination module to pre-laminate the base film and the functional layer film, and then laminating the laminated base film, functional film and decorative film together; S4: Post-processing, drying the composite decorative film to remove the solvent in the binder and improve the performance and stability of the film.

2. A system for preparing a composite decorative film, used for realizing the multi-layer film composite in the method for preparing a composite decorative film according to claim 1, comprising a base (7) and an unwinding module and a winding module (1) arranged thereon, characterized in that: The invention also comprises a composite module, wherein the composite module comprises a rolling mechanism (2) and a pre-combining mechanism, wherein the pre-combining mechanism comprises two rotatably arranged pre-combining rollers (27), wherein a transmission shaft (10) is rotatably arranged on one side of the pre-combining roller (27), wherein a thread groove (11) is provided on the transmission shaft (10), wherein a movable sleeve (12) is threadedly connected to the transmission shaft (10), and wherein two spiral blades (21) are fixedly arranged on the movable sleeve (12) for driving the pre-combining roller (27) to rotate.

3. A system for preparing a composite decorative film according to claim 2, characterized in that: A connecting plate (24) is rotatably provided at both ends of each pre-combined roller (27), and a cleaning roller (28) is rotatably provided between the two connecting plates (24).

4. The system for preparing a composite decorative film according to claim 3, characterized in that: A fixed disk (22) is fixedly arranged at one end of each cleaning roller (28) and pre-combined roller (27) close to the transmission shaft (10), and a plurality of protruding rods (23) adapted to the spiral blades (21) are fixedly arranged on the outer peripheral surface of each fixed disk (22).

5. The system for preparing a composite decorative film according to claim 4, characterized in that: A first fixed block (13) and a second fixed block (131) are respectively fixedly arranged at both ends of the movable sleeve (12); an abutment plate (14) is rotatably arranged on the first fixed block (13) and the second fixed block (131); a limit plate (16) is fixedly arranged on the upper surface of the first fixed block (13) and the second fixed block (131); a first torsion spring (15) is fixedly arranged between the first fixed block (13), the second fixed block (131) and the abutment plate (14); and an abutment rod (17) is fixedly arranged on the side of the transmission shaft (10) away from the cleaning roller (28).

6. A system for preparing a composite decorative film according to claim 5, characterized in that: A sliding frame (18) is rotatably arranged on the movable sleeve (12), the sliding frame (18) is slidably connected to the abutment rod (17), tooth plates (26) are fixedly arranged on both sides of the sliding frame (18), and a half gear (25) is fixedly arranged on one side of each connecting plate (24) away from the cleaning roller (28).

7. A system for preparing a composite decorative film according to claim 6, characterized in that: A rectangular block (251) is fixedly arranged on each of the half gears (25).

8. The system for preparing a composite decorative film according to claim 7, characterized in that: A reciprocating spiral groove (31) is formed at one end of the transmission shaft (10) away from the winding mechanism, and a moving ring (32) adapted to the reciprocating spiral groove (31) is provided at the end of the transmission shaft (10). Two rotating columns (37) are rotatably provided on the base (7), and a first caressing plate (34) and a second caressing plate (35) are slidably provided on each of the rotating columns (37). A guide rail (36) is fixedly provided on each of the first caressing plates (34). A fixing frame (33) is fixedly provided on the moving ring (32), and an end of the fixing frame (33) away from the moving ring (32) is slidably connected to the guide rail (36).

9. A system for preparing a composite decorative film according to claim 8, characterized in that: A transmission belt (39) is sleeved between the two rotating columns (37).

10. A system for preparing a composite decorative film according to claim 9, characterized in that: Two support plates (43) are fixedly arranged on the base (7), and a first lifting plate (41) and a second lifting plate (42) are rotatably arranged on one side of each support plate (43) close to the rotating column (37), and a support rod (44) is rotatably arranged on each first lifting plate (41) and the second lifting plate (42), and a second torsion spring (45) is fixedly arranged between each of the first lifting plate (41), the second lifting plate (42) and the support rod (44), and one end of each support rod (44) away from the second torsion spring (45) is fixedly connected to the support plate (43), and a lifting rod (46) is fixedly arranged on one end of each of the first caressing plate (34) and the second caressing plate (35) close to the rotating column (37).

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