Preparation method of PVC decorative film

Abstract

The invention discloses a preparation method of a PVC (polyvinyl chloride) decorative film, which is characterized by comprising the following specific steps: S1, weighing the following raw materials in parts by weight: 40-80 parts of PVC resin, 10-25 parts of plasticizer, 11-17 parts of matting powder, 1-5 parts of calcium-zinc stabilizer, 1.5-3.5 parts of pigment and 1-2 parts of bright powder, and uniformly stirring the raw materials in a stirring device to obtain a mixture; s2, the mixture is subjected to banburying treatment, and a to-be-treated material is obtained; s3, the mixture is subjected to plasticizing treatment, and the plasticizing temperature is controlled to range from 150 DEG C to 180 DEG C; and S4, calendaring the mixture through a calendaring machine to obtain the required PVC decorative film.

Description

Technical Field

[0001] The invention relates to the technical field of decorative films, in particular to a method for preparing a PVC decorative film. Background Art

[0002] PVC decorative film is a material widely used in various decoration fields. It is favored by many designers and users for its unique performance and diverse design options. PVC decorative film not only has good durability and anti-aging properties, but also has excellent flexibility and plasticity, which enables it to easily fit various complex surfaces to achieve seamless decorative effects. The application range of PVC decorative film is very wide, including but not limited to wall decoration, furniture surface covering, floor veneer, ceiling decoration, car interior and decoration of various commercial and public spaces.

[0003] At present, there are many problems in the process of preparing PVC decorative film, especially the method is too cumbersome and complicated. During the preparation process, the calendering process is usually carried out in an open environment. This practice cannot ensure that the quality of the prepared PVC decorative film meets the ideal standard. Therefore, a preparation method of PVC decorative film is urgently needed. Summary of the invention

[0004] Based on this, the object of the present invention is to provide a method for preparing a PVC decorative film to solve the existing problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a method for preparing a PVC decorative film, characterized in that it comprises the following specific steps: S1, weighing 40-80 parts of PVC resin, 10-25 parts of plasticizer, 11-17 parts of matting powder, 1-5 parts of calcium zinc stabilizer, 1.5-3.5 parts of colorant and 1-2 parts of bright powder by weight, putting various raw materials into a stirring device and stirring until uniform to obtain a mixture; S2: performing banburying treatment on the mixture to obtain a material to be treated; S3: performing plasticizing treatment on the mixture, and controlling the plasticizing temperature at 150-180°C; S4: performing calendering and molding on the mixture through a calender to obtain the desired PVC decorative film.

[0006] In step S1, the raw material is first stirred at 1000-1200 RPM for 40-90 s, and then stirred at 3000-4000 RPM for 300-420 s.

[0007] In step S4, the calender includes a base plate, a raw material extruder is fixedly connected to the top of the base plate, a calender body is fixedly connected to the top of the base plate, a drive motor is installed on one side of the calender body, an output shaft of the drive motor is fixedly connected to a first rotating rod through a coupling, a first roller is installed on the outer wall of the first rotating rod, a first gear is fixedly connected to the outer wall of the first rotating rod, a second rotating rod is movably connected to the inside of the calender body, a second roller is installed on the outer wall of the second rotating rod, a second gear is fixedly connected to the outer wall of the second rotating rod, a first synchronous wheel is fixedly connected to the outer wall of the first synchronous wheel, a synchronous belt is installed on the outer wall of the first synchronous wheel, a second synchronous wheel is installed on the inner wall of the synchronous belt, a third rotating rod is movably connected to the inside of the calender body, and a third roller is installed on the outer wall of the third rotating rod.

[0008] The outer wall of the bottom plate is fixedly connected with a support frame, a rotating shaft is installed inside the support frame, and a conveying roller is fixedly connected with the outer wall of the rotating shaft.

[0009] Preferably, the first roller forms a rotating structure with the calender body through the first rotating rod, and the first gear forms a rotating structure with the calender body through the first rotating rod.

[0010] Preferably, the first gear is meshedly connected with the second gear, and the second roller forms a rotating structure with the calender body through the second rotating rod.

[0011] Preferably, the third roller forms a rotating structure with the calender body through a third rotating rod, and the third roller is arranged parallel to the first roller.

[0012] Preferably, the base plate is welded to the support frame, and the support frame is L-shaped.

[0013] Preferably, the support frame forms a rotating structure with the conveying roller via a rotating shaft, and the support frame is symmetrically arranged with respect to the central axis of the conveying roller.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention can conveniently prepare the PVC decorative film through reasonable steps and optimized cooperation, and at the same time, the prepared product quality is stable and reliable; through the set driving motor, the first rotating rod, the first roller, the first gear, the second rotating rod, the second roller, the second gear, the first synchronous wheel, the synchronous belt, the second synchronous wheel, the third rotating rod and the third roller, by starting the driving motor, the first roller fixedly connected to the outer wall of the first rotating rod can be rotated, the first gear can be rotated, and the second gear can be rotated, thereby driving the second roller installed on the outer wall of the second rotating rod to rotate in the opposite direction of the first roller, so that the mixed material can be extruded and formed, the first synchronous wheel is fixedly connected to the outer wall of the first rotating rod, and under the action of the synchronous belt, the second synchronous wheel can be synchronously rotated, so that the third roller installed on the outer wall of the third rotating rod can be synchronously rotated, which plays the effect of facilitating the synchronous control of multiple groups of rollers, so that the PVC decorative film can be evenly stressed during the calendering process, thereby improving the forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional diagram of the raw material extruder of the present invention; Figure 3 It is a three-dimensional diagram of the calender of the present invention; Figure 4 It is a three-dimensional diagram of the conveying roller of the present invention.

[0016] In the figure: 1, bottom plate; 2, raw material extruder; 3, calender body; 4, drive motor; 5, first rotating rod; 6, first roller; 7, first gear; 8, second rotating rod; 9, second roller; 10, second gear; 11, first synchronous wheel; 12, synchronous belt; 13, second synchronous wheel; 14, third rotating rod; 15, third roller; 16, support frame; 17, rotating shaft; 18, conveying roller. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] The following describes an embodiment of the present invention based on its overall structure.

[0019] The preparation method of PVC decorative film comprises the following specific steps: S1, weighing 40-80 parts of PVC resin, 10-25 parts of plasticizer, 11-17 parts of matting powder, 1-5 parts of calcium zinc stabilizer, 1.5-3.5 parts of colorant and 1-2 parts of bright powder according to weight proportion, putting various raw materials into a stirring device and stirring until uniform, so as to obtain a mixture; S2, performing banburying treatment on the mixture to obtain a material to be treated; S3, performing plasticizing treatment on the mixture, and controlling the plasticizing temperature at 150-180°C; S4, performing calendering and molding the mixture through a calender to obtain the desired PVC decorative film; in this embodiment, 55 parts of PVC resin, 13 parts of plasticizer, 17 parts of matting powder, 2 parts of calcium zinc stabilizer, 3 parts of colorant and 2 parts of bright powder are weighed as raw materials.

[0020] In step S1, the raw material is first stirred at 1000-1200 RPM for 40-90 s, and then stirred at 3000-4000 RPM for 300-420 s.

[0021] See also Figure 1-4 In step S4, the calender includes a bottom plate 1, a raw material extruder 2 is fixedly connected to the top of the bottom plate 1, a calender body 3 is fixedly connected to the top of the bottom plate 1, a driving motor 4 is installed on one side of the calender body 3, an output shaft of the driving motor 4 is fixedly connected to a first rotating rod 5 through a coupling, a first roller 6 is installed on the outer wall of the first rotating rod 5, a first gear 7 is fixedly connected to the outer wall of the first rotating rod 5, a second rotating rod 8 is movably connected inside the calender body 3, a second roller 9 is installed on the outer wall of the second rotating rod 8, a second gear 10 is fixedly connected to the outer wall of the second rotating rod 8, a first synchronous wheel 11 is fixedly connected to the outer wall of the first synchronous wheel 11, A synchronous belt 12, a second synchronous wheel 13 is installed on the inner wall of the synchronous belt 12, a third rotating rod 14 is movably connected inside the calender body 3, a third roller 15 is installed on the outer wall of the third rotating rod 14, the first roller 6 forms a rotating structure with the calender body 3 through the first rotating rod 5, and the first gear 7 forms a rotating structure with the calender body 3 through the first rotating rod 5, the first gear 7 is meshed with the second gear 10, the second roller 9 forms a rotating structure with the calender body 3 through the second rotating rod 8, the third roller 15 forms a rotating structure with the calender body 3 through the third rotating rod 14, and the third roller 15 is arranged in parallel with the first roller 6, so that multiple groups of rollers can be synchronously controlled.

[0022] The outer wall of the base plate 1 is fixedly connected to a support frame 16, a rotating shaft 17 is installed inside the support frame 16, and a conveying roller 18 is fixedly connected to the outer wall of the rotating shaft 17. The base plate 1 is welded to the support frame 16, and the support frame 16 is L-shaped. The support frame 16 and the conveying roller 18 form a rotating structure through the rotating shaft 17, and the support frame 16 is symmetrically arranged with the central axis of the conveying roller 18, which can facilitate the guided transportation of the calendered PVC decorative film.

[0023] Working principle: When in use, by putting the mixed material into the feed port of the raw material extruder 2 and starting the raw material extruder 2, the heated mixed material can be extruded and transported to the calender body 3. By starting the driving motor 4, the first roller 6 fixedly connected to the outer wall of the first rotating rod 5 can be rotated, and the first gear 7 can be rotated. Since the first gear 7 is meshed and connected with the second gear 10, the second gear 10 can be rotated, thereby driving the second roller 9 installed on the outer wall of the second rotating rod 8 to rotate in the opposite direction of the first roller 6, so that the mixed material can be extruded and formed. The first synchronous wheel 11 is fixedly connected to the outer wall of the first rotating rod 5. Under the action of the synchronous belt 12, the second synchronous wheel 13 can be rotated synchronously, so that the third roller 15 installed on the outer wall of the third rotating rod 14 can be rotated synchronously, so that the quality of the calendering of the PVC decorative film is guaranteed. The PVC decorative film after being formed is transported through the conveying roller 18, and the conveying roller 18 can be rotated along the support frame 16, so that the PVC decorative film is transported to the next process for cooling treatment, so that the use process of the device is completed. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a PVC decorative film, characterized in that: The method comprises the following specific steps: S1, weighing 40-80 parts of PVC resin, 10-25 parts of plasticizer, 11-17 parts of matting powder, 1-5 parts of calcium zinc stabilizer, 1.5-3.5 parts of colorant and 1-2 parts of bright powder according to weight, putting various raw materials into a stirring device and stirring until uniform to obtain a mixture; S2, performing banburying treatment on the mixture to obtain a material to be treated; S3, performing plasticizing treatment on the mixture, and controlling the plasticizing temperature at 150-180°C; S4, performing calendering and molding on the mixture through a calender to obtain a desired PVC decorative film.

2. The method for preparing a PVC decorative film according to claim 1, characterized in that: In step S1, the raw material is first stirred at 1000-1200 RPM for 40-90 s, and then stirred at 3000-4000 RPM for 300-420 s.

3. The method for preparing a PVC decorative film according to claim 1, characterized in that: In step S4, the calender comprises a bottom plate (1), the top of the bottom plate (1) is fixedly connected to a raw material extruder (2), the top of the bottom plate (1) is fixedly connected to a calender body (3), a driving motor (4) is installed on one side of the calender body (3), the output shaft of the driving motor (4) is fixedly connected to a first rotating rod (5) via a coupling, a first roller (6) is installed on the outer wall of the first rotating rod (5), a first gear (7) is fixedly connected to the outer wall of the first rotating rod (5), a second rotating rod (8) is movably connected inside the calender body (3), a second roller (9) is installed on the outer wall of the second rotating rod (8), and the first gear (7) is fixedly connected to the outer wall of the first rotating rod (5). The outer wall of the second rotating rod (8) is fixedly connected to a second gear (10); the outer wall of the first rotating rod (5) is fixedly connected to a first synchronous wheel (11); the outer wall of the first synchronous wheel (11) is mounted with a synchronous belt (12); the inner wall of the synchronous belt (12) is mounted with a second synchronous wheel (13); the interior of the calender body (3) is movably connected to a third rotating rod (14); the outer wall of the third rotating rod (14) is mounted with a third roller (15); the outer wall of the bottom plate (1) is fixedly connected to a support frame (16); a rotating shaft (17) is mounted inside the support frame (16); the outer wall of the rotating shaft (17) is fixedly connected to a conveying roller (18).

4. The calender for producing PVC decorative film according to claim 3, characterized in that: The first roller (6) forms a rotating structure with the calender body (3) through the first rotating rod (5), and the first gear (7) forms a rotating structure with the calender body (3) through the first rotating rod (5).

5. The calender for producing PVC decorative film according to claim 3, characterized in that: The first gear (7) is meshingly connected with the second gear (10), and the second roller (9) forms a rotating structure with the calender body (3) via the second rotating rod (8).

6. The calender for producing PVC decorative film according to claim 3, characterized in that: The third roller (15) forms a rotating structure with the calender body (3) via a third rotating rod (14), and the third roller (15) is arranged parallel to the first roller (6).

7. The calender for producing PVC decorative film according to claim 3, characterized in that: The bottom plate (1) is welded to the support frame (16), and the support frame (16) is arranged in an L shape.

8. The calender for producing PVC decorative film according to claim 3, characterized in that: The support frame (16) forms a rotating structure with the conveying roller (18) via a rotating shaft (17), and the support frame (16) is symmetrically arranged with respect to the central axis of the conveying roller (18).

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