Two-dimensional code printing process based on alumite ground color

Abstract

The invention discloses a two-dimensional code printing process based on alumite ground color, which comprises the following steps: step 1, setting a two-dimensional code area on the surface of a printing stock, cleaning the surface of the printing stock, and designing the size and shape of a two-dimensional code; 2, an electrochemical aluminum material is in contact with the printing stock and covers the surface of the printing stock, and electrochemical aluminum foil is hot-stamped on the surface of the printing stock; 3, the two-dimensional code is printed to a designated area through an ink-jet printer; compared with the prior art, the method has the advantages that before the two-dimensional code is printed, the surface of the paper is covered with a layer of white alumite material to serve as the bottom color of the two-dimensional code, the contrast ratio and definition of the two-dimensional code can be remarkably improved, and therefore the recognition effect of the two-dimensional code is enhanced; the problem that the two-dimensional code on the deep-color paper is difficult to recognize is solved, and the overall attractiveness and market competitiveness of the product are improved.

Description

Technical Field

[0001] The present invention relates to the field of printing technology, in particular to a two-dimensional code printing process based on an electrochemical aluminum background. Background Art

[0002] In the modern packaging industry, QR codes, as a fast and convenient means of information transmission, are widely used in a variety of fields, including product traceability, anti-counterfeiting verification, and marketing engagement. However, when QR codes are printed on certain dark or textured paper, such as 120g gray paper with a Hundred Family Names pattern, their recognition is often severely affected. The unique texture and color of this paper make it difficult for directly printed QR codes to be accurately recognized by scanners, thus affecting the consumer experience and the company's brand image.

[0003] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a QR code printing process based on an electrochemical aluminum background. By covering the paper surface with a layer of white electrochemical aluminum material as the background color of the QR code before printing the QR code, the contrast and clarity of the QR code can be significantly improved, thereby enhancing its recognition effect. It not only solves the problem of difficulty in recognizing QR codes on dark paper, but also improves the overall aesthetics and market competitiveness of the product.

[0005] In order to solve the above problems, the technical solution of the present invention is a two-dimensional code printing process based on an electrochemical aluminum background, comprising the following steps: Step 1: Set the QR code area on the surface of the substrate, clean the surface of the substrate and design the size and shape of the QR code; Step 2: The electrochemical aluminum material is brought into contact with the substrate and covered on the surface of the substrate, and the electrochemical aluminum foil is hot-stamped on the surface of the substrate; Step 3: Use the inkjet printer to print the QR code in the designated area.

[0006] Preferably, in step 2, the electrochemical aluminum foil includes a base film layer, an isolation layer, a protective layer, an aluminum layer and an adhesive layer. The base film layer is a biaxially stretched polyester film, which plays a supporting role. The isolation layer, the protective layer, the aluminum layer and the adhesive layer are attached to the base film layer. The isolation layer is a silicone resin or cellulose acetate, which isolates the electrochemical aluminum foil from the base film layer and facilitates foil removal during hot stamping. The protective layer displays the color of the electrochemical aluminum and is printed on the surface of the pattern after hot stamping to play a protective role. The aluminum layer is completed by vacuum spraying aluminum. During hot stamping, the electrochemical aluminum foil contacts the hot stamping substrate and has a good bonding effect when heated.

[0007] Preferably, the base film layer has a thickness of 12-19um, the protective layer is a synthetic resin, acrylate, acrylic copolymer and white pigment, the white pigment can be titanium dioxide, the white pigment needs to have high hiding power and the particle size is controlled at 0.2-20μm, the protective layer has a thickness of 0.2-0.3um, and the adhesive layer is a hot-melt resin, which melts when heated during hot stamping and adheres to the surface of the object to be stamped.

[0008] Preferably, the thickness of the aluminum layer in the electrochemical aluminum foil is reduced or a transparent medium is used to replace part of the aluminum layer to avoid the metallic luster interfering with the white effect. The transparent medium can be zinc sulfide.

[0009] Preferably, in step 2, the hot stamping temperature is 60-100° C., the thickness of the copper plate used for hot stamping is 1.5 mm-1.8 mm, and the hot stamping pressure ranges from 2.5 to 3.5 MPa.

[0010] Preferably, in step three, the ink used by the inkjet printer is one of solvent ink, UV ink or EB ink, and the inkjet printer uses die-cutting positioning or CCD visual alignment to ensure the accurate position of the QR code.

[0011] Preferably, the process steps further include code scanning test and matching test between electrochemical aluminum foil material and ink.

[0012] Preferably, the code scanning test uses an identification device to identify the finished product QR code under different lighting environments and different angles, and records the QR code recognition time.

[0013] Preferably, the matching test between the electrochemical aluminum foil material and the ink is an adhesion test between the electrochemical aluminum foil and the ink, including a hundred-grid test and an alcohol rubbing test.

[0014] The advantages of the present invention compared with the existing technology are: 1. The present invention can improve the recognition rate of QR codes by hot-stamping white anodized aluminum foil on the surface of the substrate: by applying an anodized aluminum background, the contrast and clarity of the QR code can be significantly improved, thereby enhancing its recognition effect, and optimizing the selection of anodized aluminum foil and the hot-stamping process and the printing process of the QR code.

[0015] 2. The present invention maintains the aesthetics of the product. The anodized aluminum background not only enhances the recognition effect of the QR code, but also improves the overall aesthetics and texture of the product.

[0016] 3. The present invention has strong adaptability and is suitable for various dark-colored papers or papers with special textures, and has strong versatility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a process flow chart of the present invention.

[0018] Figure 2 It is a structural diagram of the electrochemical aluminum material of the present invention. DETAILED DESCRIPTION

[0019] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Example 1: A two-dimensional code printing process based on an electrochemical aluminum background, comprising the following steps: Step 1: Set up a QR code area on the substrate surface, clean the substrate surface, and design the size and shape of the QR code. The substrate is a Baisha cigarette box (hard and thin cigarettes and Tianxia). The four sides of the cigarette box frame are wrapped with 120g gray special paper with a Hundred Family Names pattern. The QR code needs to be printed on this paper. Step 2: The anodized aluminum foil is brought into contact with the substrate and covers the surface of the substrate, and the anodized aluminum foil is hot stamped on the surface of the substrate; The electrochemical aluminum foil includes a base film layer, an isolation layer, a protective layer, an aluminum layer and an adhesive layer. The base film layer is a biaxially stretched polyester film, which plays a supporting role. The isolation layer, protective layer, aluminum layer and adhesive layer are attached to the base film layer. The thickness of the base film layer is 12um; the isolation layer is a silicone resin and cellulose acetate, which isolates the electrochemical aluminum foil from the base film layer and facilitates foil removal during hot stamping; the protective layer displays the color of the electrochemical aluminum and is printed on the surface of the pattern after hot stamping to play a protective role. The protective layer is a synthetic resin, acrylate, acrylic copolymer and white pigment. The white pigment can be titanium dioxide. The white pigment requires high hiding power and a particle size of 0.2μm. The thickness of the protective layer is 0.2um; the aluminum layer is completed by vacuum aluminum spraying; during hot stamping, the electrochemical aluminum foil contacts the hot stamping substrate and has a good bonding effect when heated; the adhesive layer is a hot-melt resin, which melts when heated during hot stamping and adheres to the surface of the hot stamped object.

[0021] The thickness of the aluminum layer in the anodized aluminum foil is reduced or a transparent medium is used to replace part of the aluminum layer to prevent the metallic luster from interfering with the white effect. The transparent medium can be zinc sulfide. The hot stamping temperature is 60°C, the copper plate used for hot stamping is 1.5mm thick, and the hot stamping pressure is 2.5MPa.

[0022] Step 3: Use an inkjet printer to print the QR code in the designated area. The ink used by the inkjet printer is one of solvent ink, UV ink or EB ink. The inkjet printer uses die-cutting positioning or CCD vision alignment to ensure the accurate positioning of the QR code.

[0023] Example 2: A two-dimensional code printing process based on an electrochemical aluminum background, comprising the following steps: Step 1: Set the QR code area on the surface of the substrate, clean the surface of the substrate and design the size and shape of the QR code; Step 2: The anodized aluminum foil is brought into contact with the substrate and covers the surface of the substrate, and the anodized aluminum foil is hot stamped on the surface of the substrate; The electrochemical aluminum foil includes a base film layer, an isolation layer, a protective layer, an aluminum layer and an adhesive layer. The base film layer is a biaxially stretched polyester film, which plays a supporting role. The isolation layer, protective layer, aluminum layer and adhesive layer are attached to the base film layer. The thickness of the base film layer is 15um; the isolation layer is a silicone resin and cellulose acetate, which isolates the electrochemical aluminum foil from the base film layer and facilitates foil removal during hot stamping; the protective layer displays the color of the electrochemical aluminum and is printed on the surface of the pattern after hot stamping to play a protective role. The protective layer is a synthetic resin, acrylate, acrylic copolymer and white pigment. The white pigment can be titanium dioxide. The white pigment requires high hiding power and a particle size of 1.1μm. The thickness of the protective layer is 0.25um; the aluminum layer is completed by vacuum aluminum spraying; during hot stamping, the electrochemical aluminum foil contacts the hot stamping substrate and has a good bonding effect when heated; the adhesive layer is a hot-melt resin, which melts when heated during hot stamping and adheres to the surface of the hot stamped object.

[0024] The thickness of the aluminum layer in the anodized aluminum foil is reduced or a transparent medium is used to replace part of the aluminum layer to prevent the metallic luster from interfering with the white effect. The transparent medium can be zinc sulfide. The hot stamping temperature is 80°C, the copper plate used for hot stamping is 1.6mm thick, and the hot stamping pressure is 3.0MPa.

[0025] Step 3: Use an inkjet printer to print the QR code in the designated area. The ink used by the inkjet printer is one of solvent ink, UV ink or EB ink. The inkjet printer uses die-cutting positioning or CCD vision alignment to ensure the accurate positioning of the QR code.

[0026] Example 3: A two-dimensional code printing process based on an electrochemical aluminum background, comprising the following steps: Step 1: Set the QR code area on the surface of the substrate, clean the surface of the substrate and design the size and shape of the QR code; Step 2: The anodized aluminum foil is brought into contact with the substrate and covers the surface of the substrate, and the anodized aluminum foil is hot stamped on the surface of the substrate; The electrochemical aluminum foil includes a base film layer, an isolation layer, a protective layer, an aluminum layer and an adhesive layer. The base film layer is a biaxially stretched polyester film, which plays a supporting role. The isolation layer, protective layer, aluminum layer and adhesive layer are attached to the base film layer. The thickness of the base film layer is 19um; the isolation layer is a silicone resin and cellulose acetate, which isolates the electrochemical aluminum foil and the base film layer from each other and facilitates foil removal during hot stamping; the protective layer displays the color of the electrochemical aluminum and is printed on the surface of the pattern after hot stamping to play a protective role. The protective layer is a synthetic resin, acrylate, acrylic copolymer and white pigment. The white pigment can be titanium dioxide. The white pigment requires high hiding power and a particle size of 2.0μm. The thickness of the protective layer is 0.3um; the aluminum layer is completed by vacuum aluminum spraying; during hot stamping, the electrochemical aluminum foil contacts the hot stamping substrate and has a good bonding effect when heated; the adhesive layer is a hot-melt resin, which melts when heated during hot stamping and adheres to the surface of the hot stamped object.

[0027] The thickness of the aluminum layer in the anodized aluminum foil is reduced or a transparent medium is used to replace part of the aluminum layer to prevent the metallic luster from interfering with the white effect. The transparent medium can be zinc sulfide. The hot stamping temperature is 80°C, the copper plate used for hot stamping is 1.8mm thick, and the hot stamping pressure is 3.5MPa.

[0028] Step 3: Use an inkjet printer to print the QR code in the designated area. The ink used by the inkjet printer is one of solvent ink, UV ink or EB ink. The inkjet printer uses die-cutting positioning or CCD vision alignment to ensure the accurate positioning of the QR code.

[0029] Example 4: The printed product was subjected to a code scanning test and a compatibility test for the anodized aluminum foil and ink. The code scanning test used a recognition device to identify the QR code of the finished product under different lighting conditions and angles, and the recognition time was recorded. The compatibility test for the anodized aluminum foil and ink involved an adhesion test between the anodized aluminum foil and ink, including a 100-grid test and an alcohol rubbing test.

[0030] The above description of the present invention and its embodiments is non-limiting. In short, if a person skilled in the art is inspired by the above description and designs a similar structure and embodiment to the technical solution without departing from the purpose of the present invention, they should fall within the scope of protection of the present invention.

Claims

1. A two-dimensional code printing process based on an electrochemical aluminum background, characterized in that: The following steps are involved: Step 1: Set the QR code area on the surface of the substrate, clean the surface of the substrate and design the size and shape of the QR code; Step 2: The anodized aluminum foil is brought into contact with the substrate and covers the surface of the substrate, and the anodized aluminum foil is hot stamped on the surface of the substrate; Step 3: Use the inkjet printer to print the QR code in the designated area.

2. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 1, characterized in that: In step 2, the electrochemical aluminum foil includes a base film layer, an isolation layer, a protective layer, an aluminum layer and an adhesive layer. The base film layer is a biaxially stretched polyester film, which plays a supporting role. The isolation layer, protective layer, aluminum layer and adhesive layer are attached to the base film layer; the isolation layer is a silicone resin and cellulose acetate, which isolates the electrochemical aluminum foil from the base film layer and facilitates foil removal during hot stamping; the protective layer displays the color of the electrochemical aluminum and is printed on the surface of the pattern after hot stamping to play a protective role; the aluminum layer is completed by vacuum aluminum spraying; during hot stamping, the electrochemical aluminum foil contacts the hot stamping substrate and has a good bonding effect when heated.

3. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 2, characterized in that: The base film layer has a thickness of 12-19um, the protective layer is a synthetic resin, acrylate, acrylic copolymer and white pigment, the white pigment can be titanium dioxide, the white pigment needs to have high hiding power and the particle size is controlled at 0.2-2.0μm, the protective layer has a thickness of 0.2-0.3um, and the adhesive layer is a hot-melt resin, which melts when heated during hot stamping and adheres to the surface of the object to be stamped.

4. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 3, characterized in that: The thickness of the aluminum layer in the electrochemical aluminum foil is reduced or a transparent medium is used to replace part of the aluminum layer to avoid the metallic luster interfering with the white effect. The transparent medium can be zinc sulfide.

5. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 1, characterized in that: In step 2, the hot stamping temperature is 60-100° C., the thickness of the copper plate used for hot stamping is 1.5 mm-1.8 mm, and the hot stamping pressure ranges from 2.5 to 3.5 MPa.

6. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 1, characterized in that: In step three, the ink used by the inkjet printer is one of solvent ink, UV ink or EB ink, and the inkjet printer uses die-cutting positioning or CCD visual alignment to ensure the accurate position of the QR code.

7. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 1, characterized in that: The process steps also include code scanning test and matching test between electrochemical aluminum foil material and ink.

8. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 7, characterized in that: The code scanning test uses recognition equipment to recognize the finished product QR code under different lighting environments and different angles, and records the QR code recognition time.

9. The two-dimensional code printing process based on an electrochemical aluminum background according to claim 7, characterized in that: The matching test of the electrochemical aluminum foil material and the ink is an adhesion test between the electrochemical aluminum foil and the ink, including a hundred-grid test and an alcohol rubbing test.

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