Colorful lamp box film, processing equipment and preparation process

Abstract

The invention discloses a colored lamp box film, which is prepared from the following components in parts by mass: 50 to 60 parts of PVC (Polyvinyl Chloride) resin, 5 to 10 parts of EVA (Ethylene Vinyl Acetate) resin, 28 to 35 parts of plasticizer, 1 to 3 parts of ultraviolet light absorber, 2 to 5 parts of modified nano titanium dioxide, 1 to 5 parts of stabilizer, 62 to 70 parts of ground calcium carbonate, 1.8 to 2.5 parts of anatase titanium dioxide, 10 to 15 parts of flame retardant, 2 to 3 parts of flame retardant synergist, 1 to 3 parts of lubricant and 0.002 to 0.007 part of pigment, the lamp box film has the advantage of being long in service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of light box film preparation, and in particular relates to a color light box film, processing equipment and preparation process. Background Art

[0002] Due to its good flexibility, uniform light transmission, long service life, easy segmentation and installation, good ink-receiving property, etc., light box cloth is mainly used as an outdoor material or for the production of large-scale advertisements. Generally, a layer of light box film is provided on the surface or bottom layer of the light box cloth to improve the overall use effect of the light box cloth. The main component of the PVC film is polyvinyl chloride, which is slightly yellowish and translucent, has luster and good rain-proof and antistatic properties, so its application on light box films is becoming more and more extensive.

[0003] Existing light box films all use PVC materials. The PVC film is easily affected by temperature, light, and radiation when outdoors for a long time. Free radicals appear in the material structure within the PVC chain. Among them, the chlorine free radical molecule chain obtains a hydrogen atom to generate a chain free radical. Finally, the chain free radical breaks away from the chlorine free radical, generates a double bond in the molecule and triggers continuous dehydrochlorination. The release of HCl will cause the formation of multiple conjugated double bonds, and then absorb more light radiation, resulting in the aging of the PVC film and affecting the use effect.

[0004] At the same time, during the production process of the light box film, since the surface to be sprayed and printed may be contaminated with impurities such as dust and fluff during the long-term storage of the light box film, if the surface dust, fluff and other impurities on the surface of the light box film are not removed in time during the spraying process, the dust, fluff, etc. may cause incomplete contact between the sprayed ink and the light box film, resulting in incomplete patterns on the surface of the light box film and affecting the aesthetic degree and publicity effect of the surface of the light box film. Summary of the Invention

[0005] The content part of this application is used to introduce concepts in a brief form, and these concepts will be described in detail in the following detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a color light box film, processing equipment and preparation process.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A color light box film, calculated by mass parts, includes the following components: 50 - 60 parts of PVC resin, 5 - 10 parts of EVA resin, 28 - 35 parts of plasticizer, 1 - 3 parts of ultraviolet absorber, 2 - 5 parts of modified nano-titanium dioxide, 1 - 5 parts of stabilizer, 62 - 70 parts of heavy calcium carbonate, 1.8 - 2.5 parts of anatase titanium dioxide, 10 - 15 parts of flame retardant, 2 - 3 parts of flame retardant synergist, 1 - 3 parts of lubricant, and 0.002 - 0.007 parts of pigment.

[0008] Further, the color light box film further includes 0.03 - 0.07 parts of fluorescent brightener.

[0009] As another aspect of the present application, there is also provided a processing device for producing the color light box film as described above, including: a box body configured to have a cavity for cleaning the light box film; a first winding roller and a second winding roller disposed inside the box body; a spray box disposed on the top of the box body; a drying device disposed on one side of the spray box; the second winding roller is above and on one side of the first winding roller, and a feed port and a discharge port are provided on the side wall of the box body, and both the feed port and the discharge port are on the same side of the box body; the spray box is above the second winding roller.

[0010] Further, the drying device includes: a mounting plate slidably connected inside the box body; a brush component disposed on the mounting plate; a wiping component disposed on one side of the brush component; when the light box film is wound around the first winding roller and the second winding roller, the brush component contacts the light box film before the wiping component.

[0011] Further, the wiping component includes: a first mounting block connected to the mounting plate; a water-absorbing cotton disposed on the first mounting block; a first slider is provided on the first mounting block, and a first chute cooperating with the first slider is provided on the mounting plate.

[0012] Further, the brush component includes: a second mounting block connected to the mounting plate; a plurality of bristles disposed on the second mounting block; guide rails are provided on the inner wall of the box body, and guide blocks corresponding to the guide rails are provided on the mounting plate.

[0013] Further, the processing device for the color light box film further includes: a movable plate disposed below the mounting plate; a guide rod disposed on the movable plate; a plurality of first through grooves and second through grooves are provided on the movable plate, the first through grooves are below the water-absorbing cotton, the second through grooves are below the bristles, and a first push rod is provided at the bottom of the mounting plate.

[0014] Further, a first flap is provided at the bottom of the first through groove, and a second flap is provided at the bottom of the second through groove. One end of the first flap is rotatably connected to the side wall of the first through groove, and one end of the second flap is rotatably connected to the side wall of the second through groove; a first push block for driving the rotation of the first flap and the second flap is provided on the inner wall of the box body.

[0015] Further, a third through groove is provided on the mounting plate, an active block is arranged in the third through groove, the brush hair assembly is connected to the active block, and a mounting bracket for guiding the active block is arranged on the mounting plate; a first connecting rod is arranged on the mounting plate, and a first scraping rod is arranged on the first connecting rod.

[0016] As another aspect of the present application, there is also provided a process for preparing a color light box film using the above-mentioned processing equipment for color light box film, which is characterized by comprising the following steps:

[0017] a. Thread the light box film into the box body from the feed port, wind it around the first winding roller and the second winding roller, and then thread the light box film out from the discharge port;

[0018] b. Inject clean water at the bottom of the box body, and the spraying box extracts the clean water at the bottom of the box body and sprays it on the light box film;

[0019] c. The cleaned light box film is subjected to printing treatment by a spraying printer;

[0020] d. Perform cutting and edge sealing treatment on the printed light box film.

[0021] The beneficial effects of the present invention are as follows: to provide a color light box film, processing equipment and preparation process that can extend the service life of the light box film and ensure the finished product quality of the light box film. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings that form a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of the drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0023] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and components are not necessarily drawn to scale.

[0024] In the drawings:

[0025] Figure 1 is a schematic structural diagram of the processing equipment for a color light box film in an embodiment of the present invention.

[0026] Figure 2 is Figure 1 a sectional view of the box body of the processing equipment for the color light box film in the shown embodiment.

[0027] Figure 3 is Figure 2 an enlarged view of part A in

[0028] Figure 4 is Figure 3 an enlarged view of part B in

[0029] Figure 5 The enlarged view of part C in Figure 3 .

[0030] Figure 6 The cross-sectional view of the guide rail of the processing equipment for the colored light box film in the Figure 1 embodiment shown in the figure.

[0031] Figure 7 The enlarged view of part D in Figure 6 .

[0032] Figure 8 The enlarged view of part E in Figure 6 .

[0033] Figure 9 The cross-sectional view of the roller of the processing equipment for the colored light box film in the Figure 1 embodiment shown in the figure.

[0034] Figure 10 The enlarged view of part F in Figure 9 .

[0035] The meanings of the reference numerals in the figure are as follows:

[0036] 101, box body; 102, feed inlet; 103, discharge outlet; 104, first winding roller; 105, second winding roller; 106, spray box; 107, first infusion pipe; 108, mounting plate; 109, first mounting block; 1091, first slider; 110, absorbent cotton; 111, second mounting block; 1111, third slider; 112, brush; 113, mounting frame; 1131, second chute; 114, support spring; 115, movable block; 1151, second slider; 116, movable plate; 117, first flap; 118, support plate; 119, second connecting rod; 120, sleeve; 1201, first flange; 1202, second flange; 1203, anti-rotation groove; 121, roller; 1211, anti-rotation block; 122, second convex block; 123, first push rod; 124, first connecting rod; 125, first scraping rod; 126, third return spring; 127, second push rod; 128, second scraping rod; 129, fourth return spring; 130, third push rod; 131, second flap; 132, second infusion pipe; 133, guide rail; 134, guide rod; 1341, limit plate; 135, first return spring; 136, first convex block; 137, limit block; 138, third connecting spring; 139, third mounting block; 140, first push block; 141, first connecting spring; 142, transmission rod; 143, connecting shaft; 144, third convex block; 145, fifth return spring; 146, movable rod; 1461, convex plate; 147, second return spring; 148, fourth mounting block; 149, second push block; 150, second connecting spring; 151, motor; 152, maintenance door. Detailed implementation manners

[0037] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0038] In addition, it should be noted that for the sake of convenience of description, only the parts related to the invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0039] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or mutual dependence relationship of the functions performed by these devices, modules or units.

[0040] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0041] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0042] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0043] A color light box film, calculated by mass parts, comprises the following components: 50 - 60 parts of PVC resin, 5 - 10 parts of EVA resin, 28 - 35 parts of plasticizer, 1 - 3 parts of ultraviolet absorber, 2 - 5 parts of modified nano-titanium dioxide, 1 - 5 parts of stabilizer, 62 - 70 parts of heavy calcium carbonate, 1.8 - 2.5 parts of anatase titanium dioxide, 10 - 15 parts of flame retardant, 2 - 3 parts of flame retardant synergist, 1 - 3 parts of lubricant, and 0.002 - 0.007 parts of pigment.

[0044] Among them, the plasticizer includes at least one of dioctyl phthalate and epoxidized soybean oil; the ultraviolet absorber is UV-9 or UV-P; the stabilizer includes at least one of zinc stearate, cadmium stearate, barium stearate, and cadmium-barium-zinc composite stabilizer; the flame retardant includes at least one of decabromodiphenylethane, aluminum hydroxide, and magnesium hydroxide; the flame retardant synergist is exfoliated kaolin; the lubricant includes at least one of polyethylene wax and oxidized polyethylene wax.

[0045] The preparation method of nano-titanium dioxide is as follows:

[0046] 1) By mass, 5-10 parts of nano-titanium dioxide are uniformly dispersed in 30-40 parts of absolute ethanol, ultrasonicated for 10-20 min, and then stirred for 40-60 min;

[0047] 2) After adding 1-3 parts of silane coupling agent to 1) and stirring evenly, 10-15 parts of polyethylene glycol are added, and the obtained solution is emulsified for 30-40 min;

[0048] 3) The pH of the slurry obtained after emulsification in 2) is adjusted to 7.0-8.0, and then the slurry is stirred at 60-80 °C for 2-3 h. The obtained reaction solution is ultrasonicated for 30 min;

[0049] 4) The suspension obtained by ultrasonication is centrifuged to remove the upper layer liquid. The precipitate is washed 3-5 times with absolute ethanol, and the obtained sample is dried and ground to obtain nano-titanium dioxide.

[0050] Furthermore, the color light box film also includes 0.03-0.07 parts of fluorescent whitening agent.

[0051] As Figure 1-10 shown, on the other hand, the present application also provides a processing device for producing the color light box film as described above, including a box body 101, a first winding roller 104, a second winding roller 105, a spray box 106 and a drying device; the box body 101 is configured to have a cavity for cleaning the light box film; the first winding roller 104 and the second winding roller 105 are arranged in the box body 101; the spray box 106 is arranged on the top of the box body 101; the drying device is arranged on one side of the spray box 106; the second winding roller 105 is above and on one side of the first winding roller 104. An inlet 102 and an outlet 103 are provided on the side wall of the box body 101. Both the inlet 102 and the outlet 103 are on the same side of the box body 101, and the outlet 103 is above the inlet 102; the spray box 106 is above the second winding roller 105; through the staggered arrangement of the first winding roller 104 and the second winding roller 105, the light box film wound on the first winding roller 104 and the second winding roller 105 is inclined and laid under the spray box 106, and the clear water sprayed out from the spray box 106 directly falls on the light box film to wash off the dust and hair on the light box film; by arranging both the inlet 102 and the outlet 103 on the same side of the box body 101, it is avoided that the water droplets falling from the light box film fall on the light box film at the bottom of the box body 101, so that the water flow, dust and impurities on the light box film directly fall into the bottom of the box body 101 to clean the surface of the light box film.

[0052] The drying device includes a mounting plate 108, a brush hair 112 assembly and a wiping assembly; the mounting plate 108 is slidably connected inside the box body 101; a guide rail 133 is provided on the inner wall of the box body 101, a guide block corresponding to the guide rail 133 is provided on the mounting plate 108, a fifth return spring 145 is provided at the bottom of the guide block, and the fifth return spring 145 abuts against the bottom surface of the guide rail 133; the brush hair 112 assembly is arranged on the mounting plate 108; the wiping assembly is arranged on one side of the brush hair 112 assembly; when the light box film is wound around the first winding roller 104 and the second winding roller 105, the brush hair 112 assembly contacts the light box film prior to the wiping assembly.

[0053] A third through groove and a mounting bracket 113 are provided on the mounting plate 108, the mounting bracket 113 is arranged at the top of the third through groove, a movable block 115 is arranged in the third through groove, a second slider 1151 is provided on the movable block 115, a second sliding groove 1131 for the second slider 1151 to move is provided on the mounting bracket 113, a support spring 114 is provided on the movable block 115, and the top end of the support spring 114 abuts against the mounting bracket 113.

[0054] The wiping assembly includes a first mounting block 109 and a water-absorbing cotton 110, the first mounting block 109 is connected to the mounting plate 108; the water-absorbing cotton 110 is arranged on the first mounting block 109; a first slider 1091 is provided on the first mounting block 109, and a first sliding groove matched with the first slider 1091 is provided on the mounting plate 108; the brush hair 112 assembly includes a second mounting block 111 and a plurality of brush hairs 112; the second mounting block 111 is connected to the mounting plate 108; the brush hairs 112 are arranged on the second mounting block 111; a third slider 1111 is provided on the second mounting block 111, and a third sliding groove corresponding to the third slider 1111 is provided on the movable block 115.

[0055] A movable plate 116 is further provided inside the box body 101, the movable plate 116 is located below the mounting plate 108, a guide rod 134 is provided on the movable plate 116, a guide cavity is provided on the guide rail 133, the guide rod 134 penetrates through the guide cavity, a limiting plate 1341 is provided at the top end of the guide rod 134, and a first return spring 135 is provided at the bottom of the limiting plate 1341, and the first return spring 135 abuts against the bottom surface of the guide cavity; a first push rod 123 is provided at the bottom of the mounting plate 108.

[0056] The movable plate 116 is provided with a plurality of first through grooves and second through grooves. The first through grooves are located below the bristles 112, and the second through grooves are located below the absorbent cotton 110. A first flap 117 is provided at the bottom of the first through groove, and a second flap 131 is provided at the bottom of the second through groove. One end of the first flap 117 is rotatably connected to the side wall of the first through groove, and one end of the second flap 131 is rotatably connected to the side wall of the second through groove. A first groove corresponding to the first flap 117 is provided at the bottom of the first through groove, and a second groove corresponding to the second flap 131 is provided at the bottom of the second through groove. Flow channels are provided on the side walls of the first through groove and the second through groove, and a diversion groove communicating with the flow channels is provided at one end of the movable plate 116.

[0057] Connecting shafts 143 are respectively provided on the side walls of the first flap 117 and the second flap 131. The connecting shafts 143 are rotatably connected to the movable plate 116. A transmission rod 142 is provided on the movable plate 116. The transmission rod 142 is in contact with the side wall of the connecting shaft 143 and forms a transmission fit with the connecting shaft 143. A third convex block 144 is provided at the bottom of the mounting plate 108. The third convex block 144 is located at one end of the transmission rod 142. A fifth return spring 145 is provided at one end of the transmission rod 142. One end of the fifth return spring 145 abuts against the third convex block 144. A third mounting block 139 is provided on the inner wall of the box body 101. A first movable groove is provided on the third mounting block 139. A first push block 140 and a first electromagnet are provided in the first movable groove. A first connecting spring 141 is provided on the first push block 140. One end of the first connecting spring 141 is fixedly connected to the inner wall of the first movable groove.

[0058] A movable rod 146 is provided at the bottom of the movable plate 116. A plurality of support plates 118 are provided on the movable rod 146. The support plates 118 are located on one side of the first through groove and the second through groove. A convex plate 1461 is provided at one end of the movable rod 146. A second return spring 147 is provided on the convex plate 1461. One end of the second return spring 147 abuts against the end face of the movable plate 116. A fourth mounting block 148 is provided on the inner wall of the box body 101. A second movable groove is provided on the fourth mounting block 148. A second push block 149 and a second electromagnet are provided in the second movable groove. A second connecting spring 150 is provided on the second push block 149. One end of the second connecting spring 150 is fixedly connected to the second movable groove.

[0059] A first convex block 136 is provided on the side wall of the guide rail 133. A third movable groove communicating with the guide cavity is provided on the first convex block 136. A limiting block 137 and a third electromagnet are provided in the third movable groove. A third connecting spring 138 is provided on the limiting block 137. One end of the third connecting spring 138 is fixedly connected to the inner wall of the third movable groove. The first push block 140, the second push block 149 and the limiting block 137 are all made of magnets.

[0060] The mounting plate 108 is provided with a second bump 122. Inside the box body 101, there is a rotating roller 121. A sleeve 120 is sleeved on the rotating roller 121. The sleeve 120 is provided with an anti-rotation groove 1203. The rotating roller 121 is provided with an anti-rotation block 1211 corresponding to the anti-rotation groove 1203. One end of the anti-rotation groove 1203 is provided with a fourth electromagnet, and the fourth electromagnet can drive the sleeve 120 to move along the axial direction of the rotating shaft. The sleeve 120 is provided with a first flange 1201 and a second flange 1202. The height of the first flange 1201 is greater than that of the second flange 1202. On the side wall of the box body 101, there is a motor 151 for driving the rotating roller 121 to rotate.

[0061] The bottom of the mounting plate 108 is provided with a second connecting rod 119. The second connecting rod 119 is provided with a fourth moving groove. Inside the fourth moving groove, there is a first scraping rod 125. The bottom of the first scraping rod 125 is provided with a third return spring 126, and the bottom end of the third return spring 126 abuts against the bottom surface of the fourth moving groove. The mounting frame 113 is provided with a second connecting rod 119. The moving block 115 is provided with a fourth through groove. The second mounting block 111 is provided with a fifth through groove. The second connecting rod 119 passes through the fourth through groove and the fifth through groove. The second connecting rod 119 is provided with a fifth moving groove. Inside the fifth moving groove, there is a second scraping rod 128. The bottom of the second scraping rod 128 is provided with a fourth return spring 129, and the bottom end of the fourth return spring 129 abuts against the bottom surface of the fifth moving groove. The bottom of the moving block 115 is provided with a second push rod 127 and a third push rod 130. The second push rod 127 is above the first scraping rod 125, and the third push rod 130 is above the second scraping rod 128.

[0062] Inside the box body 101, there is a receiving box. One side of the receiving box is provided with an opening, so that the receiving box can communicate with the diversion groove. On the side wall of the receiving box, there is a first infusion pipe 107. The first infusion pipe 107 communicates with the receiving box and extends to the bottom of the box body 101. The bottom of the spraying box 106 is provided with a second infusion pipe 132. Inside the second infusion pipe 132, there is a water pump and a filter screen. The second infusion pipe 132 extends to the bottom of the box body 101.

[0063] On the side wall of the box body 101, there is a maintenance opening. The maintenance opening is on one side of the drying device. A maintenance door 152 is connected to the maintenance opening. After the maintenance opening is opened, the brush hair 112 assembly and the wiping assembly can be directly replaced.

[0064] As another aspect of the present application, there is also provided a process for preparing a color light box film using the above-mentioned processing equipment for color light box films, which is characterized in that it includes the following steps:

[0065] a. Thread the light box film into the box body from the feed port, then wind it around the first winding roller and the second winding roller, and then thread the light box film out from the discharge port;

[0066] b. Inject clean water at the bottom of the box body, and the spraying box extracts the clean water at the bottom of the box body and sprays it on the light box film;

[0067] c. The cleaned light box film is processed by a spraying printer for printing;

[0068] d. Perform cutting and edge sealing on the printed light box film.

[0069] When the drying device is in normal use, the first flange 1201 is aligned with the second convex block 122. The motor 151 drives the roller 121 to rotate, causing the first flange 1201 to push the mounting plate 108 to move. The first through groove and the second through groove are in an open state. When the mounting plate 108 descends, the water-absorbing cotton 110 passes through the first through groove, and the brush bristles 112 pass through the second through groove. The first push rod 123 abuts against the movable plate 116 and pushes the movable plate 116 to move. The movable plate 116 and the mounting plate 108 descend together. The brush bristles 112 and the water-absorbing cotton 110 abut against the light box film. The brush bristles 112 are used to scrape off the impurities on the surface of the light box film that cannot be directly washed off. At the same time, the brush bristles 112 scrape off the excessive water flow on the light box film, enabling the light box film to dry quickly when it comes into contact with the water-absorbing cotton 110 subsequently.

[0070] When the absorbent cotton 110 absorbs more water, the motor 151 drives the roller 121 to rotate so that the first flange 1201 is staggered with the second protrusion 122, the fourth reset spring 129 pushes the mounting plate 108 to move upward, the first push rod 123 is disengaged from the movable plate 116, the first reset spring 135 pushes the guide rod 134 to move upward, the absorbent cotton 110 and the bristles 112 move to above the movable plate 116, the third electromagnet is energized to generate a magnetic force that repels the limit block 137, the third electromagnet drives the limit block 137 to extend out of the third movable groove, the limit block 137 enters the guide cavity, the fourth electromagnet drives the sleeve 120 to move, and the second flange 1202 moves to the second protrusion The first push block 140 and the second push block 149 are energized to move, and the first push block 140 pushes the transmission rod 142 to move, and the transmission rod 142 drives the connecting shaft 143 to rotate so that the first flap 117 and the second flap 131 rotate, and the first flap 117 is transferred into the first groove, and the second flap 131 is transferred into the second groove; the second push block 149 drives the movable rod 146 to move, and the movable rod 146 drives the support plate 118 to move to overlap with the first through groove and the second through groove, and the support plate 118 is at the bottom of the first flap 117 and the second flap 131 to provide support force for the first flap 117 and the second flap 131, so as to turn the first flap 117 into the first groove, and the second flap 131 into the second groove. The flap 117 and the second flap 131 are fixed; the motor 151 drives the roller 121 to rotate, the second flange 1202 pushes the mounting plate 108 down, the absorbent cotton 110 presses against the first flap 117 to be squeezed and deformed, and the water on the absorbent cotton 110 is squeezed out; the bristles 112 press against the second flap 131 to move the movable block 115 to the top of the mounting frame 113, and the movable block 115 drives the bristles 112 to move so that the bottom ends of the bristles 112 contact the first scraper 125 and the second scraper 128, and the first scraper 125 and the second scraper 128 are used to clean the bristles 112; when the second flange 1202 is staggered with the second protrusion 122, the mounting plate 108 rises relative to the movable block 115 moves, and when the movable block 115 moves to be on the same plane with the mounting plate 108, the second push rod 127 and the third push rod 130 push the first scraper rod 125 and the second scraper rod 128 to move. When the first scraper rod 125 and the second scraper rod 128 move, vibration is generated to shake off the impurities on the first scraper rod 125 and the second scraper rod 128; when the movable plate 116 descends, it is located at one side of the receiving box, and the water flow squeezed out from the absorbent cotton 110 flows through the top of the second flap 131 and flows into the receiving box. The water flow squeezed out from the absorbent cotton 110 is used to flush the surface of the movable plate 116, and the water flow in the receiving box flows back to the bottom of the box body 101 through the first infusion pipe 107, and the water flow is recycled.

[0071] To ensure the continuous operation of the equipment, two sets of drying devices can be set to be used alternately. That is, when one set of drying device is in contact with the lamp box film to dry the lamp box film, the water-absorbing cotton 110 on the other set of drying device is undergoing drying treatment, so as to enable the continuous production of the lamp box film.

[0072] The above description is only some preferred embodiments of the present disclosure and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features. At the same time, it should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the embodiments of the present disclosure that have similar functions.

Claims

1. A color light box film, characterized in that: Calculated by mass, the composition includes the following components: 50-60 parts of PVC resin, 5-10 parts of EVA resin, 28-35 parts of plasticizer, 1-3 parts of UV absorber, 2-5 parts of modified nano titanium dioxide, 1-5 parts of stabilizer, 62-70 parts of heavy calcium carbonate, 1.8-2.5 parts of anatase titanium dioxide, 10-15 parts of flame retardant, 2-3 parts of flame retardant synergist, 1-3 parts of lubricant and 0.002-0.007 parts of pigment.

2. The color light box film according to claim 1, characterized in that: It also includes 0.03 to 0.07 parts of fluorescent whitening agent.

3. A processing device for producing a colored light box film as claimed in any one of claims 1-2, characterized in that: include: The box body is constructed to have a cavity for washing the light box film; A first winding roller and a second winding roller are arranged in the box; A spray box, arranged on the top of the box body; A drying device, arranged on one side of the spray box; The second winding roller is located on one side above the first winding roller, a feed port and a discharge port are provided on the side wall of the box body, and the feed port and the discharge port are both located on the same side of the box body; the spray box is located above the second winding roller.

4. The processing equipment for color light box film according to claim 3 is characterized in that: The drying device comprises: A mounting plate, slidably connected to the box body; A bristle assembly is arranged on the mounting plate; A wiping component is arranged on one side of the bristle component; When the light box film is wound around the first winding roller and the second winding roller, the bristle assembly contacts the light box film before the wiping assembly.

5. The processing equipment for color light box film according to claim 4 is characterized in that: The wiping assembly comprises: A first mounting block connected to the mounting plate; Water-absorbing cotton, arranged on the first mounting block; The first mounting block is provided with a first sliding block, and the mounting plate is provided with a first sliding groove matched with the first sliding block.

6. The processing equipment for color light box film according to claim 5 is characterized in that: The bristle assembly comprises: A second mounting block connected to the mounting plate; A plurality of bristles, arranged on the second mounting block; A guide rail is provided on the inner wall of the box body, and a guide block corresponding to the guide rail is provided on the mounting plate.

7. The processing equipment for color light box film according to claim 6 is characterized in that: Also includes: A movable plate, arranged below the mounting plate; A guide rod, arranged on the movable plate; The movable plate is provided with a plurality of first through slots and second through slots, wherein the first through slots are located below the absorbent cotton, and the second through slots are located below the bristles, and a first push rod is provided at the bottom of the mounting plate.

8. The processing equipment for color light box film according to claim 7 is characterized in that: A first flap is provided at the bottom of the first through slot, and a second flap is provided at the bottom of the second through slot. One end of the first flap is rotatably connected to the side wall of the first through slot, and one end of the second flap is rotatably connected to the side wall of the second through slot. A first push block for driving the first flap and the second flap to rotate is provided on the inner wall of the box body.

9. The processing equipment for color light box film according to claim 8 is characterized in that: A third through slot is provided on the mounting plate, a movable block is provided in the third through slot, the bristle assembly is connected to the movable block, a mounting frame for guiding the movable block is provided on the mounting plate; a first connecting rod is provided on the mounting plate, and a first scraping rod is provided on the first connecting rod.

10. A process for preparing a color light box film using the processing equipment for the color light box film according to any one of claims 3 to 9, characterized in that: The following steps are involved: a. Insert the light box film into the box from the feed port, wind it around the first winding roller and the second winding roller, and then pass the light box film out from the discharge port; b. Pour clean water into the bottom of the box, and use the spray box to extract clean water from the bottom of the box and spray it on the light box film; c. The cleaned light box film is printed by a spray printer; d. Cut and seal the printed light box film.

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