Multicolor laser film and processing method thereof

Abstract

The invention discloses a multicolor laser film and a processing method thereof. The multicolor laser film comprises a coating and a carrier layer, multiple color areas are formed on the coating through laser, and limpid laser of the multiple color areas exists on the same coating to form a multi-color laser layer; the thickness of the multi-color laser layer is between 0.8 mu m and 2 mu m; a vacuum aluminum plating layer is arranged on the back surface of the coating of the multi-color laser layer; the vacuum aluminum-plated layer can be transferred or compounded on the carrier layer at one time through the adhesive layer, so that the whole structure presents a multi-color laser pattern; and the base film is adhered to the top surface of the multi-color laser layer and can play a role in protecting the surface of the multi-color laser layer. By adopting the arrangement, the multicolor laser film has the advantages of high precision and paper cost saving, and paper damage can be reduced during processing.

Description

Technical Field

[0001] The present invention belongs to the technical field of multi-color laser film structure and its processing technology, and specifically relates to a multi-color laser film and its processing method, which are applied to the surface decoration and anti-counterfeiting of high-end packaging products. Background Art

[0002] In traditional laser processes, laser film can only achieve a single color. If a multi-color pattern is required, multiple overprinting or multiple laminations are required to make the laser film consist of multiple layers of single-color films. This will result in the following defects:

[0003] 1. Low overprinting accuracy: The cumulative error of multiple overprinting or multiple composites can reach more than ±0.5mm, which is difficult to meet the accuracy requirements of high-end packaging;

[0004] 2. High cost: Multiple overprinting or multiple laminations lead to waste of materials (such as film, energy) and increased labor costs;

[0005] 3. Paper damage: Repeated high-temperature overprinting or lamination can easily cause fiber breakage or coating peeling on the paper surface, affecting the surface quality of the packaging material. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention aims to provide a multi-color laser film and a processing method thereof, wherein the laser film has high precision and saves paper costs, and can reduce paper damage during processing.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A multi-color laser film includes a coating layer and a carrier layer; the coating layer has multiple color areas of laser light, and the multiple color areas of laser light coexist on the same coating layer to form a multi-color laser layer; the coating layer can be transferred or composited on the carrier layer at one time to present a multi-color laser pattern.

[0009] Furthermore, the color area is coated by a multi-head coating machine, and the laser layer of the color is cured by using an oven of the multi-head coating machine.

[0010] Furthermore, a vacuum aluminum coating layer is provided on the back side of the coating layer of the multi-color laser layer.

[0011] Furthermore, the vacuum aluminum plating layer can be transferred or composited onto the carrier layer through an adhesive layer.

[0012] Furthermore, the carrier layer is made of paper or material film.

[0013] Furthermore, a base film is provided on the multi-color laser layer.

[0014] Furthermore, the thickness of the multi-color laser layer is between 0.8um and 2um.

[0015] A method for processing a multi-color laser film, using the multi-color laser film described above, comprises the following steps:

[0016] Step 1: Use a multi-head coater to coat the coating multiple times, using the corresponding coating head to coat the corresponding color each time and using an oven to cure the color to form a multi-color laser layer with multiple color areas; then emboss the multi-color laser layer and cool it after embossing;

[0017] Step 2: Vacuum aluminum is plated on the cooled multi-color laser coating to form a vacuum aluminum layer, and then a glue layer is applied on the aluminum layer using a glue coater, and then the glue layer is transferred or laminated on the carrier layer;

[0018] Step three: a base film is provided on the multi-color laser layer to form the multi-color laser film, and then the multi-color laser film is rolled up and packaged by a winding machine to form a multi-color hot stamping film.

[0019] Furthermore, in step 1, when color curing is performed, the temperature of the oven needs to be controlled within a range of 120° to 180°.

[0020] Furthermore, in step 1, when a multi-head coater is used for each color coating, the coating thickness needs to be controlled between 0.8um and 2um.

[0021] The present invention has the following beneficial effects:

[0022] 1. The multi-color laser layer in the multi-color laser film of the present invention is primarily formed by coating and curing multiple color zones on a coating using a multi-head coating machine. These multiple color zones coexist on the same coating layer. Compared to the prior art methods of multiple overprinting or multiple lamination, the multi-color laser layer of the multi-color laser film of the present invention is thinner and can achieve the coexistence of multiple color patterns on the same coating layer without the need for multiple overprinting or lamination. This offers the advantages of high precision, reduced production costs, and reduced paper damage.

[0023] 2. The processing method of the multi-color laser film of the present invention adopts a multi-color coating machine to coat multiple times. Each time, the corresponding pattern is coated according to one color of the required pattern to form the color area of ​​the corresponding color block, and then another color is coated to form the color area of ​​the corresponding color block until all colors are coated, so that multiple color areas can coexist on the same coating and form a corresponding multi-color pattern. The curing after each coating is mainly to reduce the phenomenon of color mixing or confusion in the next coating, so as to achieve the advantage of coating accuracy. At the same time, the texture and functionality of the product can be improved by vacuum aluminum plating on the coating of the multi-color laser layer; the use of colloid one-time transfer or compounding on the carrier layer has the advantage of simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the multi-color laser film of the present invention.

[0025] In the figure: 1. Coating layer; 2. Multi-color laser layer; 21. Color area; 3. Vacuum aluminum coating layer; 4. Adhesive layer; 5. Carrier layer; 6. Base film. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Terms such as "upper," "inner," "middle," "left," "right," and "one" used in this specification are for ease of description and are not intended to limit the scope of the present invention. Changes or adjustments to these terms, without substantially altering the technical content, are also considered within the scope of the present invention.

[0027] The present invention addresses the problems of low overprinting precision, high cost, and paper damage in existing laser laser films that use multiple overprinting or multiple compounding methods to make the laser laser film consist of multiple layers of single-color films stacked together to present a multi-color pattern. Therefore, the multi-color laser laser film of the present invention was developed. This laser film has high precision, helps save paper costs, and can reduce paper damage during processing.

[0028] The multi-color laser film of the present invention and its processing method can be applied to the surface decoration and anti-counterfeiting of high-end packaging products, such as wine box paper, etc. The following is a detailed introduction to the structure of the multi-color laser film of the present invention and its processing method:

[0029] Example 1

[0030] A multi-color laser film, such as Figure 1As shown, the multi-color laser coating comprises a coating 1 and a carrier layer 5. Multiple color zones 21 are laser-coated on the coating 1. These zones 21 coexist on the same coating 1, forming a multi-color laser coating layer 2. The color zones 21 are coated with their respective colors using a multi-head coating machine, and the corresponding laser coating layer is cured in the multi-head coating machine's oven. The multi-color laser coating layer 2 has a thickness between 0.8 and 2 μm. Compared to existing technologies that use multiple overprinting or lamination methods, this thickness is relatively thin and offers higher overprinting precision, which helps improve results and save costs.

[0031] The back of the coating 1 of the multi-color laser layer 2 is provided with a vacuum aluminum layer 3. The vacuum aluminum layer 3 can make the surface of the multi-color laser layer 2 glossy to enhance the appearance and texture, and the vacuum aluminum layer 3 can also enhance the functionality of the multi-color laser layer 2.

[0032] The vacuum-coated aluminum layer 3 can be transferred or laminated onto the carrier layer 5 via the adhesive layer 4, resulting in a multi-color laser pattern on the entire structure. The carrier layer 5 can be made of paper or a film. A base film 6 is attached to the top surface of the multi-color laser layer 2 to protect the surface of the multi-color laser layer.

[0033] In summary, the multi-color laser layer 2 of the multi-color laser film of the present invention is primarily formed by coating and curing multiple color regions 21 on the coating layer 1 using a multi-head coater. These multiple color regions 21 are laser-illuminated coexisting on the same coating layer 1. Compared to the prior art methods of multiple overprinting or multiple lamination, the multi-color laser layer 2 of the multi-color laser film of the present invention is thinner and can achieve the coexistence of multiple color patterns on the same coating layer 1 without the need for multiple overprinting or lamination. This provides the advantages of high precision, reduced production costs, and reduced paper damage.

[0034] Example 2

[0035] A method for processing a multi-color laser film, using the multi-color laser film of Example 1, comprises the following steps:

[0036] Step 1: Use a multi-head coater to coat the coating 1 multiple times, using a corresponding coating head to coat the corresponding color each time and using an oven to cure the color to form a multi-color laser layer 2 with multiple color areas 21; then emboss the multi-color laser layer 2 and cool it after embossing.

[0037] During color curing, the oven temperature must be controlled between 120° and 180°. When applying color using a multi-head coater, the coating thickness must be controlled between 0.8um and 2um.

[0038] Step 2: Vacuum aluminum is deposited on the cooled multi-color laser layer 2 coating 1 to form a vacuum aluminum layer 3, and then a glue layer 4 is coated on the aluminum layer using a glue coater, and then the glue layer 4 is transferred or laminated onto the carrier layer 5;

[0039] Step 3: a base film 6 is provided on the multi-color laser layer 2 to form the multi-color laser film, and then the multi-color laser film is rolled up and packaged by a winding machine to form a multi-color hot stamping film (also called multi-color laser film).

[0040] In summary, the processing method of the multi-color laser film of the present invention adopts a multi-color coating machine to coat multiple times. Each time, the corresponding pattern is coated according to one color of the required pattern to form the color area 21 of the corresponding color block, and then another color is coated to form the color area 21 of the corresponding color block. After the coating of all colors is completed, multiple color areas 21 can be laser-illuminated and coexist on the same coating layer 1 to form a corresponding multi-color pattern. The curing after each coating is mainly to reduce the phenomenon of color mixing or confusion during the next coating, so as to achieve the advantage of coating accuracy. At the same time, the texture and functionality of the product can be improved by vacuum aluminum plating on the coating layer 1 of the multi-color laser layer 2; the one-time transfer or compounding of the colloid on the carrier layer 5 has the advantage of simple operation.

[0041] The multi-color laser film and its processing method of the present invention have the following beneficial effects:

[0042] (1) Improved visual effects: overprint error of each color is ≤±0.1mm, meeting high-end packaging requirements;

[0043] (2) Cost optimization: material consumption is reduced by 50%, and overall costs are reduced by 40%-60%;

[0044] (3) Quality assurance: reduce paper damage rate and improve the qualified rate of finished products.

[0045] The embodiments of the present invention are not limited to these. According to the above contents of the present invention, by utilizing common technical knowledge and customary means in this field, without departing from the above basic technical ideas of the present invention, the present invention can also make other various forms of modification, replacement or combination, all of which fall within the scope of protection of the present invention.

Claims

1. A multi-color laser film, characterized in that: It includes a coating layer and a carrier layer; the coating layer has multiple color areas of laser light, and the multiple color areas of laser light coexist on the same coating layer to form a multi-color laser layer; the coating layer can be transferred or composited on the carrier layer at one time to present a multi-color laser pattern.

2. The multi-color laser film according to claim 1, characterized in that: The color area is coated by a multi-head coating machine, and the laser layer of the color is cured by using an oven of the multi-head coating machine.

3. The multi-color laser film according to claim 1, characterized in that: A vacuum aluminum coating layer is provided on the back of the coating layer of the multi-color laser layer.

4. The multi-color laser film according to claim 3, characterized in that: The vacuum aluminum plating layer can be transferred or composited onto the carrier layer through the adhesive layer.

5. The multi-color laser film according to claim 1, characterized in that: The coating layer is made of PET original film; the carrier layer is made of paper or material film.

6. The multi-color laser film according to claim 2, wherein: A base film is provided on the multi-color laser layer.

7. The multi-color laser film according to claim 2, characterized in that: The thickness of the multi-color laser layer is between 0.8um and 2um.

8. A method for processing a multi-color laser film, using the multi-color laser film according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Use a multi-head coater to coat the coating multiple times, using the corresponding coating head to coat the corresponding color each time and using an oven to cure the color to form a multi-color laser layer with multiple color areas; then emboss the multi-color laser layer and cool it after embossing; Step 2: Vacuum aluminum is plated on the cooled multi-color laser coating to form a vacuum aluminum layer, and then a glue layer is applied on the aluminum layer using a glue coater, and then the glue layer is transferred or laminated on the carrier layer; Step three: a base film is provided on the multi-color laser layer to form the multi-color laser film, and then the multi-color laser film is rolled up and packaged by a winding machine to form a multi-color hot stamping film.

9. The method for processing a multi-color laser film according to claim 8, wherein: In step 1, when color curing is performed, the temperature of the oven needs to be controlled within a range of 120° to 180°.

10. The method for processing a multi-color laser film according to claim 8, wherein: In step 1, when a multi-head coater is used for each color coating, the coating thickness needs to be controlled between 0.8um and 2um.

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