Nanopigment particles filling and cleaning apparatus

Abstract

The utility model relates to a kind of nano pigment particle filling and cleaning equipment.Nano pigment particle filling and cleaning equipment include: filling unit, for the filling coloring of nano pigment particle dispersion liquid to the film with the pattern area to be filled;First drying unit, located downstream of filling unit, the film filled with nano pigment particle dispersion liquid is carried out first drying treatment;Cleaning unit, located downstream of first drying unit, for the cleaning treatment of film after first drying treatment;Second drying unit, located downstream of cleaning unit, for the second drying treatment of film after cleaning treatment.The utility model's nano pigment particle filling and cleaning equipment include sequentially arranged filling unit, first drying unit, cleaning unit and second drying unit, can realize integrated filling and cleaning, make nano pigment particle firmly adsorbed in the groove on the surface of film, form colored stereoscopic image, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of packaging and printing, and in particular to a nano-pigment particle filling and cleaning device. Background Technology

[0002] In the current packaging printing industry, the requirements for the groove structure of printed films are high, requiring groove structures of specific depth and width. Currently, color is still achieved by filling with nano-pigment particles. When the groove structure is shallow, the nano-pigment particles are prone to detachment in subsequent processes, leading to poor coloring.

[0003] In existing 3D imaging anti-counterfeiting technologies, achieving multi-color effects using microlens imaging typically involves multiple UV replications of multi-layered microstructures combined with nano-ink filling. Specifically, color realization relies on filling micro-texture grooves with nano-ink, a method that demands high depth and width of the grooves, requiring each layer of microtexture to meet specific depth and width requirements. Consequently, each replicated layer increases the overall thickness, significantly increasing the cumulative thickness of the multi-layered structure. This increased thickness leads to changes in the imaging focal length, making it difficult to maintain a clear image within a narrow focal length range, thus limiting the accuracy and application range of microlens imaging. In the printing and packaging field, existing technologies for dynamic 3D anti-counterfeiting images suffer from limited color, low contrast, and poor color display, failing to meet the requirements for high contrast and saturation.

[0004] Traditional inks typically use petroleum-based resins as the main component, with the addition of various organic solvents, pigments, and additives. While these inks offer good printing performance, their production and use release large amounts of volatile organic compounds (VOCs), polluting the air and posing a threat to human health. Furthermore, inks in waste printed materials are difficult to degrade naturally, potentially causing secondary pollution during landfill or incineration, further exacerbating environmental problems.

[0005] The Chinese invention patent announcement number CN103236222B describes an anti-counterfeiting security film based on integrated imaging principles and featuring a dynamic 3D effect. It presents a relatively complex 3D unit image array layer with a 3D layered micro / nano structure, which is difficult to implement in actual production. It also indicates that the unit image can be a single-color or multi-color image; when the unit image is multi-color, it can be produced through single-layer or multi-layer nanostructures or using color-changing ink. However, in actual production, nanoscale image production technology is not yet mature, and color-changing ink only changes with angle and cannot directly produce multiple images, especially those with specific color requirements. Utility Model Content

[0006] Therefore, it is necessary to provide a nano-pigment particle filling and cleaning device that can achieve integrated filling and cleaning, which can firmly adsorb nano-pigment particles into the grooves on the surface of the film to form a colored three-dimensional image and improve production efficiency.

[0007] A nano-pigment particle filling and cleaning device, the nano-pigment particle filling and cleaning device comprising:

[0008] A filling unit is used to fill and color a thin film with a nano-pigment particle dispersion in an area to be filled.

[0009] The first drying unit is located downstream of the filling unit. The first drying unit performs a first drying treatment on the film filled with nano-pigment particle dispersion to form a nano-pigment particle layer in the patterned area of ​​the film.

[0010] A cleaning unit, located downstream of the first drying unit, is used to clean the film after the first drying process; and

[0011] The second drying unit is located downstream of the cleaning unit and is used to perform a second drying process on the cleaned film.

[0012] The nano-pigment particle filling and cleaning equipment of this utility model includes a filling unit, a first drying unit, a cleaning unit, and a second drying unit arranged sequentially. It enables integrated filling and cleaning, allowing the nano-pigment particles to be firmly adsorbed into the grooves on the film surface, forming a colored three-dimensional image and improving production efficiency. Furthermore, the product prepared using the above-mentioned nano-pigment particle filling and cleaning equipment exhibits stable adsorption of nano-pigment particles, high colorfastness, and resistance to discoloration.

[0013] In one embodiment, the filling unit includes:

[0014] The feed tank is used to hold the dispersion of nano-pigment particles;

[0015] A filling roller is located on the open side of the material trough, and the filling roller is used to coat the nano pigment particle dispersion liquid in the material trough;

[0016] A pressure roller, located on one side of the filling roller, is used to disperse and hydraulically bond nano-pigment particles from the filling roller to the patterned area of ​​the film; and

[0017] A plurality of first guide rollers are distributed in the transmission direction of the film, and the plurality of first guide rollers are used to pull the film for transmission.

[0018] In one embodiment, the filling unit further includes a tension roller for adjusting the position of the film, the tension roller being located on the side of the pressure roller and the plurality of first guide rollers away from the feed trough.

[0019] In one embodiment, the filling unit further includes a sensor that identifies the position of the alignment mechanism on the film and transmits a signal to the tension roller to adjust the position of the film to achieve alignment.

[0020] In one embodiment, the cleaning unit includes:

[0021] The inner water tank is used to hold the cleaning solution;

[0022] A wiping roller is located on the opening side of the inner water tank. The wiping roller is used to wipe the surface of the film. The rotation direction of the wiping roller is opposite to the transmission direction of the film.

[0023] A dewatering roller, located downstream of the wiping roller, is used to squeeze out excess cleaning liquid from the film.

[0024] A plurality of second guide rollers are distributed along the transmission direction of the film, and the plurality of second guide rollers are used to traction the film for transmission; and

[0025] The drive roller is located on the side of the squeezing roller away from the wiping roller, and the drive roller is used to provide power to the plurality of second guide rollers.

[0026] In one embodiment, a plurality of second guide rollers include a first sub-guide roller, a second sub-guide roller, and a third sub-guide roller arranged sequentially along the transmission direction of the film. The first sub-guide roller and the second sub-guide roller are respectively located on both sides of the wiping roller, and the third sub-guide roller is located on the side of the second sub-guide roller away from the wiping roller. A tension sensor for detecting the tension of the film is provided on one side of the third sub-guide roller.

[0027] In one embodiment, the inner wall of the inner water tank has a water level line, and the inner water tank wall is provided with a plurality of openings penetrating both sides, the plurality of openings being arranged along the water level line.

[0028] In one embodiment, the cleaning unit further includes an outer water tank located outside the inner water tank, which is used to collect cleaning liquid overflowing from the inner water tank.

[0029] In one embodiment, the number of cleaning units is more than one group, and the outer water tanks of all the cleaning units are connected.

[0030] In one embodiment, the nano-pigment particle filling and cleaning equipment further includes a filtration unit located on one side of the cleaning unit and connected to the external water tank, for filtering the cleaning solution after cleaning. Attached Figure Description

[0031] Figure 1 This is a plan view of a nano-pigment particle filling and cleaning device according to one embodiment of the present invention.

[0032] Figure 2 This is a three-dimensional schematic diagram of a nano-pigment particle filling and cleaning device according to an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of the filling unit in the nano-pigment particle filling and cleaning equipment according to one embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the cleaning unit in the nano-pigment particle filling and cleaning equipment according to one embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram showing the positions of the inner water tank, outer water tank, and filter unit in the nano-pigment particle filling and cleaning equipment according to one embodiment of the present invention. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Please see Figures 1-5 The nano-pigment particle filling and cleaning device 100 of this utility model includes a filling unit 110, a first drying unit 120, a cleaning unit 130 and a second drying unit 140.

[0040] The filling unit 110 is used to fill and color a thin film with a nano-pigment particle dispersion in the area to be filled. The area to be filled in the thin film has a micro / nano structure, which can be a micro / nano structure forming micro-images. The filling unit 110 can be one set (filling with a single color) or multiple sets (filling with multiple colors), enabling single-color or multi-color printing. The nano-pigment particle dispersion is obtained by uniformly dispersing nano-pigment particles in water.

[0041] The first drying unit 120 is located downstream of the filling unit 110. The first drying unit 120 performs a first drying treatment on the film filled with the nano-pigment particle dispersion to form a nano-pigment particle layer in the patterned area of ​​the film. The first drying unit 120 can be, for example, an oven.

[0042] The cleaning unit 130 is located downstream of the first drying unit 120, and the cleaning unit 130 is used to clean the film after the first drying process.

[0043] The second drying unit 140 is located downstream of the cleaning unit 130 and is used to perform a second drying process on the cleaned film. The second drying unit 140 can be, for example, an oven.

[0044] The nano-pigment particle filling and cleaning equipment 100 of this embodiment includes a filling unit 110, a first drying unit 120, a cleaning unit 130 and a second drying unit 140 arranged in sequence. It can realize integrated filling and cleaning, so that the nano-pigment particles are firmly adsorbed in the grooves on the surface of the film to form a colored three-dimensional image and improve production efficiency.

[0045] Based on the aforementioned embodiments, the filling unit 110 of this embodiment includes a material trough 111, a filling roller 112, a pressure roller 113, and a plurality of first guide rollers 114.

[0046] The feed tank 111 is used to contain the dispersion of nano-pigment particles.

[0047] The filling roller 112 is located on the open side of the material tank 111 and is used to adhere the nano-pigment particle dispersion liquid in the material tank 111. Specifically, the outer surface of the filling roller 112 has a recess corresponding to the area of ​​the pattern to be filled. For example, if the outer contour of the pattern to be filled is circular, then the outer surface of the filling roller 112 has a circular recess of the same or slightly larger size.

[0048] The pressure roller 113 is located on one side of the filling roller 112. The pressure roller 113 is used to disperse and hydraulically bond the nano-pigment particles in the filling roller 112 to the patterned area of ​​the film. Specifically, the pressure roller 113 disperses and hydraulically bonds the nano-pigment particles in the filling roller 112 to the patterned area of ​​the film by pressing.

[0049] Among them, a number of first guide rollers 114 are distributed in the transmission direction of the film, and the number of first guide rollers 114 are used to traction the film transmission.

[0050] Based on the aforementioned embodiments, the filling unit 110 further includes a tension roller 115 for adjusting the position of the film. The tension roller 115 is located on the side of the pressure roller 113 and a plurality of first guide rollers 114 away from the feed trough 111.

[0051] Based on the aforementioned embodiments, the filling unit 110 further includes a sensor that identifies the position of the alignment mechanism on the film and transmits a signal to the tension roller 115 to adjust the position of the film to achieve alignment. The alignment mechanism on the film is, for example, an alignment target. The filling unit 110 of this embodiment can achieve precise alignment between the area to be filled and the recessed portion.

[0052] Based on the aforementioned embodiments, the cleaning unit 130 includes an inner water tank 131, a wiping roller 132, a squeezing roller 133, a plurality of second guide rollers 134, and a drive roller 135.

[0053] The inner water tank 131 is used to hold the cleaning solution. The size of the inner water tank 131 can be set according to the actual situation.

[0054] The wiping roller 132 is located on the open side of the inner water tank 131. The wiping roller 132 is used to wipe the surface of the film, and the rotation direction of the wiping roller 132 is opposite to the transmission direction of the film. Specifically, the wiping roller 132 can wipe the upper or lower surface of the film, and by forming a suitable angle, the wiping roller 132 can perform wiping better.

[0055] The dewatering roller 133 is located downstream of the wiping roller 132 and is used to squeeze out excess cleaning liquid from the film.

[0056] Among them, a number of second guide rollers 134 are distributed in the transmission direction of the film, and the number of second guide rollers 134 are used to pull the film to drive.

[0057] The drive roller 135 is located on the side of the squeezing roller 133 away from the wiping roller 132, and the drive roller 135 is used to provide power to a plurality of second guide rollers 134.

[0058] Based on the aforementioned embodiment, the plurality of second guide rollers 134 include a first sub-guide roller 1341, a second sub-guide roller 1342, and a third sub-guide roller 1343 arranged sequentially along the film's transmission direction. The first sub-guide roller 1341 and the second sub-guide roller 1342 are respectively located on opposite sides of the wiping roller 132, and the third sub-guide roller 1343 is located on the side of the second sub-guide roller 1342 away from the wiping roller 132. A tension sensor for detecting film tension is provided on one side of the third sub-guide roller 1343. Figure 4 As shown, the third sub-guide roller 1343 is positioned close to the active roller 135. When the tension sensor detects that the film tension is insufficient or excessive, it transmits a signal to the active roller 135 to adjust the tension.

[0059] Based on the aforementioned embodiment, the inner wall of the inner water tank 131 has a water level line, and the wall of the inner water tank 131 is provided with a plurality of openings penetrating both sides, arranged along the water level line. The film segment wiped by the wiping roller 132 is submerged below the water level line of the inner water tank 131, cleaning away excess nano-pigment particles outside the groove. The number, shape, size, and distance between adjacent openings can all be set according to actual conditions.

[0060] Based on the aforementioned embodiments, the cleaning unit 130 further includes an outer water tank 136, which is located outside the inner water tank 131 and is used to collect cleaning fluid overflowing from the inner water tank 131. The bottom side of the outer water tank 136 has a water outlet. It is understood that the water outlet can be located at any position on the bottom side of the outer water tank 136 or on its bottom surface.

[0061] Based on the aforementioned embodiments, the number of cleaning units 130 is one or more, and the outer water tanks 136 of all cleaning units 130 are interconnected. In the nano-pigment particle filling and cleaning equipment 100 of this invention, the number of cleaning units 130 is not limited; it can be one, two, or more, for example, three to six groups, preferably four groups as in this embodiment. In this embodiment, as... Figure 5 As shown, multiple sets of inner water tanks 131 are placed side by side inside the outer water tank 136.

[0062] Based on the aforementioned embodiments, the nano-pigment particle filling and cleaning equipment 100 further includes a filtration unit 160. The filtration unit 160 is located on one side of the cleaning unit 130 and communicates with the outer water tank 136, and is used to filter the cleaning solution after cleaning. The water outlet on the bottom side of the outer water tank 136 of the cleaning unit 130 is connected to the filtration unit 160 for filtration, filtering and collecting the washed-off nano-pigment particles. The filtered liquid re-enters the inner water tank 131 through the water outlet pipe, realizing the filtration and circulation of the cleaning solution. In this embodiment, the aqueous solution after cleaning the nano-pigment particles can be recycled and reused, and the filtered nano-pigment particles can also be recycled and reused.

[0063] One embodiment of a method for forming a microtext layer on a substrate layer includes the following steps:

[0064] Step S1: Provide a substrate layer and apply an adhesive layer to one side of the substrate layer;

[0065] Step S2: Provide a graphic structure template, use the graphic structure template to imprint and cure to form a hydrophobic graphic layer; provide a nano pigment particle dispersion; fill the graphic units of the hydrophobic graphic layer with the nano pigment particle dispersion and dry it. After the water evaporates, the remaining nano pigment particles are bonded to the surface of the groove through van der Waals forces to form a nano pigment particle layer.

[0066] Step S3: Clean the side of the hydrophobic pattern layer away from the substrate layer to clean the nano-pigment particles attached to the non-groove area, and then dry it.

[0067] The nano-pigment particle filling and cleaning equipment described above is used to implement step S2 of the above method, which involves "filling the graphic unit of the hydrophobic graphic layer with a mixture of aqueous nano-pigment particles and drying it. After the water evaporates, the remaining nano-pigment particles are bonded to the surface of the groove by van der Waals forces to form a nano-pigment particle layer" and step S3.

[0068] The nano-pigment particle filling and cleaning equipment of this utility model includes a filling unit, a first drying unit, a cleaning unit, and a second drying unit arranged sequentially. It enables integrated filling and cleaning, allowing the nano-pigment particles to be firmly adsorbed into the grooves on the film surface, forming a colored three-dimensional image and improving production efficiency. Furthermore, the product prepared using the above-mentioned nano-pigment particle filling and cleaning equipment exhibits stable adsorption of nano-pigment particles, high colorfastness, and resistance to discoloration.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A nano-pigment particle filling and cleaning device, characterized in that, The nano-pigment particle filling and cleaning equipment includes: A filling unit is used to fill and color a thin film with a nano-pigment particle dispersion in an area to be filled. The first drying unit is located downstream of the filling unit. The first drying unit performs a first drying treatment on the film filled with nano-pigment particle dispersion to form a nano-pigment particle layer in the patterned area of ​​the film. A cleaning unit, located downstream of the first drying unit, is used to clean the film after the first drying process; and The second drying unit is located downstream of the cleaning unit and is used to perform a second drying process on the cleaned film.

2. The nano-pigment particle filling and cleaning equipment according to claim 1, characterized in that, The filling unit includes: The feed tank is used to hold the dispersion of nano-pigment particles; A filling roller is located on the open side of the material trough, and the filling roller is used to coat the nano pigment particle dispersion liquid in the material trough; A pressure roller, located on one side of the filling roller, is used to disperse and hydraulically bond nano-pigment particles from the filling roller to the patterned area of ​​the film; and A plurality of first guide rollers are distributed in the transmission direction of the film, and the plurality of first guide rollers are used to pull the film for transmission.

3. The nano-pigment particle filling and cleaning equipment according to claim 2, characterized in that, The filling unit also includes a tension roller for adjusting the position of the film, the tension roller being located on the side of the pressure roller and the plurality of first guide rollers away from the feed trough.

4. The nano-pigment particle filling and cleaning equipment according to claim 3, characterized in that, The filling unit also includes a sensor that identifies the position of the alignment mechanism on the film and transmits a signal to the tension roller to adjust the position of the film to achieve alignment.

5. The nano-pigment particle filling and cleaning equipment according to claim 1, characterized in that, The cleaning unit includes: The inner water tank is used to hold the cleaning solution; A wiping roller is located on the opening side of the inner water tank. The wiping roller is used to wipe the surface of the film. The rotation direction of the wiping roller is opposite to the transmission direction of the film. A dewatering roller, located downstream of the wiping roller, is used to squeeze out excess cleaning liquid from the film. A plurality of second guide rollers are distributed along the transmission direction of the film, and the plurality of second guide rollers are used to traction the film for transmission; and The drive roller is located on the side of the squeezing roller away from the wiping roller, and the drive roller is used to provide power to the plurality of second guide rollers.

6. The nano-pigment particle filling and cleaning equipment according to claim 5, characterized in that, The plurality of second guide rollers include a first sub-guide roller, a second sub-guide roller and a third sub-guide roller arranged sequentially along the transmission direction of the film. The first sub-guide roller and the second sub-guide roller are respectively located on both sides of the wiping roller. The third sub-guide roller is located on the side of the second sub-guide roller away from the wiping roller. A tension sensor for detecting the tension of the film is provided on one side of the third sub-guide roller.

7. The nano-pigment particle filling and cleaning equipment according to claim 5, characterized in that, The inner wall of the inner water tank has a water level line, and the inner water tank wall has several openings that penetrate both sides, and the several openings are arranged along the water level line.

8. The nano-pigment particle filling and cleaning equipment according to claim 5, characterized in that, The cleaning unit also includes an outer water tank, which is located outside the inner water tank and is used to collect the cleaning liquid overflowing from the inner water tank.

9. The nano-pigment particle filling and cleaning equipment according to claim 8, characterized in that, The number of cleaning units is one or more, and the external water tanks of all the cleaning units are connected.

10. The nano-pigment particle filling and cleaning equipment according to claim 8 or 9, characterized in that, The nano-pigment particle filling and cleaning equipment also includes a filtration unit, which is located on one side of the cleaning unit and communicates with the external water tank, and is used to filter the cleaning solution after cleaning.

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