Automatic ink spraying process for color printing paper box

Abstract

The present application relates to a kind of ink automatic spraying process of color printing carton, in the ink automatic spraying process of above-mentioned color printing carton, a layer of base coat is uniformly coated on one side of standard paperboard by base coat spraying step, and base coat layer is formed after drying.The waterproof ink is sprayed and printed on base coat layer using waterproof ink by pattern spraying printing step, and waterproof pattern is formed after drying.Waterproof film is pasted on the surface of waterproof pattern by waterproof film pasting step.A layer of reflective coating is uniformly sprayed on the side of waterproof film away from the waterproof pattern by reflective coating spraying step, and reflective layer is formed after drying.Protective film is pasted on reflective layer by protective film pasting step.The waterproof pattern formed by waterproof ink in the ink automatic spraying process of above-mentioned color printing carton has excellent waterproof and moisture-proof performance.The reflective layer composed of reflective coating can reflect sunlight, avoid strong light irradiation waterproof pattern, and protective film can protect reflective layer.

Description

Technical Field

[0001] This invention relates to the field of color printing carton processing, and in particular to an automatic ink spraying process for color printing cartons. Background Technology

[0002] Cardboard boxes are the most widely used packaging products. They are classified by materials, such as corrugated cardboard boxes and single-layer cardboard boxes, and commonly have three- or five-layer structures. They are mainly composed of linerboard, corrugated core paper, and linerboard. Common materials for cardboard boxes include kraft paper, white cardboard, and linerboard. Cardboard boxes are typically used as wrapping materials for goods or as a protective outer layer for items. The volume of a cardboard box varies depending on the size of the goods. With increasing demand for decorative and display-oriented cardboard boxes, colorful cardboard boxes with a wide variety of colors have appeared on the market.

[0003] However, traditional colored cardboard box manufacturing processes, such as the technology protected by the patent application number CN202510254291.5, entitled "Printing Process for Packaging Color Box Production", produce colored cardboard boxes where the patterns are prone to fading and oxidation. Summary of the Invention

[0004] Therefore, it is necessary to provide an automatic ink spraying process for color-printed cartons to address the technical problem that the patterns on color-printed cartons are prone to fading and oxidation due to traditional color carton manufacturing processes.

[0005] An automatic ink spraying process for color-printed cartons, the process comprising the following steps: Cardboard cutting steps: Cut the raw cardboard into standard cardboard shapes and sizes that meet the preset requirements; Base coat spraying steps: Apply a layer of base coat evenly to one side of a standard cardboard, and after drying, form a base coating; Pattern spraying and printing steps: Waterproof ink is sprayed onto the base coating and dried to form a waterproof pattern; Waterproof membrane application steps: Apply the waterproof membrane to the surface of the waterproof pattern; Reflective coating spraying steps: A layer of reflective coating is evenly sprayed onto the side of the waterproof membrane facing away from the waterproof pattern, and after drying, a reflective layer is formed; Protective film application steps: Apply the protective film to the reflective layer.

[0006] In one embodiment, during the base coat spraying step, the drying temperature is 40 to 45 degrees Celsius, and the drying time is 1 to 1.5 hours.

[0007] In one embodiment, during the base coat spraying step, the drying temperature is 42 degrees Celsius and the drying time is 1.2 hours.

[0008] In one embodiment, during the pattern spraying and printing step, the drying temperature is 45 to 50 degrees Celsius, and the drying time is 1 to 2 hours.

[0009] In one embodiment, during the pattern spraying and printing step, the drying temperature is 48 degrees Celsius and the drying time is 1.5 hours.

[0010] In one embodiment, during the reflective coating spraying step, the drying temperature is 40 to 50 degrees Celsius, and the drying time is 1 to 2 hours.

[0011] In one embodiment, during the reflective coating spraying step, the drying temperature is 45 degrees Celsius and the drying time is 1.5 hours.

[0012] In one embodiment, the protective film is a PET film.

[0013] In one embodiment, the protective film is a PVC film.

[0014] In one embodiment, during the cardboard cutting step, a leveling machine is used to level the standard cardboard.

[0015] In the above-mentioned automatic ink spraying process for color-printed cartons, the raw cardboard is cut into standard cardboard pieces with the desired shape and size through a cardboard cutting step. A base coat is evenly applied to one side of the standard cardboard through a base coat spraying step, and after drying, a base coating is formed. Waterproof ink is sprayed onto the base coating through a pattern spraying and printing step, and after drying, a waterproof pattern is formed. A waterproof membrane is then pasted onto the surface of the waterproof pattern through a waterproof membrane pasting step. A reflective paint is evenly sprayed onto the side of the waterproof membrane facing away from the waterproof pattern through a reflective paint spraying step, and after drying, a reflective layer is formed. A protective film is then pasted onto the reflective layer through a protective film pasting step. The waterproof pattern formed by the waterproof ink in the above-mentioned automatic ink spraying process for color-printed cartons exhibits excellent waterproof and moisture-proof performance. The reflective layer formed by the reflective paint reflects sunlight, preventing strong light from irradiating the waterproof pattern, and the protective film protects the reflective layer. The waterproof pattern on the color-printed cartons obtained by the above-mentioned automatic ink spraying process for color-printed cartons exhibits excellent resistance to fading and oxidation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the automatic ink spraying process for color-printed cartons in one embodiment; Figure 2 This is a schematic diagram of the structure of a color-printed cardboard box in one embodiment; Figure 3 for Figure 2 A partially enlarged structural diagram of the color-printed cardboard box in the embodiment. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention 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 thorough understanding of the present invention. However, the present invention can be practiced 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 the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Please refer to the following: Figures 1 to 3 This invention provides an automatic ink spraying process for color-printed cartons, the process comprising the following steps: Step 101: Cardboard Cutting Step. Cut the raw cardboard into standard cardboard 200 pieces that meet the preset shape and size requirements.

[0023] Specifically, a cutting machine is used to cut the raw paper into standard cardboard 200s that meet the preset requirements in shape and size. In this embodiment, a leveling machine is used to level the standard cardboard 200s.

[0024] Step 102: Base coat spraying step: Apply a layer of base coat evenly to one side of the standard cardboard 200 and dry it to form a base coating 300.

[0025] Specifically, a base coating is uniformly applied to one side of the standard cardboard 200 and dried to form a base coating 300. In this embodiment, the drying temperature is 40 to 45 degrees Celsius, and the drying time is 1 to 1.5 hours. Further, the drying temperature is 42 degrees Celsius, and the drying time is 1.2 hours.

[0026] Step 103: Pattern spraying and printing step: Use waterproof ink to spray and print waterproof ink on the base coating 300, and after drying, form a waterproof pattern 400.

[0027] Specifically, waterproof ink is sprayed or printed onto the base coating 300, and after drying, a waterproof pattern 400 is formed. In this embodiment, the drying temperature is 45 to 50 degrees Celsius, and the drying time is 1 to 2 hours. Further, the drying temperature is 48 degrees Celsius, and the drying time is 1.5 hours.

[0028] Step 104: Applying Waterproof Membrane 500: Apply the waterproof membrane 500 to the surface of the waterproof pattern 400.

[0029] Specifically, a waterproof membrane 500 is adhered to the surface of the waterproof pattern 400 using a laminating machine. In this embodiment, the waterproof membrane 500 is a PE membrane. In another embodiment, the waterproof membrane 500 is a PP membrane.

[0030] Step 105: Reflective coating spraying step: A layer of reflective coating is evenly sprayed onto the side of the waterproof membrane 500 that is opposite to the waterproof pattern 400, and after drying, a reflective layer 600 is formed.

[0031] Specifically, a layer of reflective paint is evenly sprayed onto the side of the waterproof membrane 500 facing away from the waterproof pattern 400, and after drying, a reflective layer 600 is formed. In this embodiment, the drying temperature is 40 to 50 degrees Celsius, and the drying time is 1 to 2 hours. Specifically, the drying temperature is 45 degrees Celsius, and the drying time is 1.5 hours.

[0032] Step 106: Applying the protective film 700: Apply the protective film 700 to the reflective layer 600.

[0033] Specifically, a protective film 700 is adhered to the reflective layer 600. In this embodiment, the protective film 700 is a PET film. In another embodiment, the protective film 700 is a PVC film. The protective film 700 can protect the reflective layer 600.

[0034] In the above-mentioned automatic ink spraying process for color-printed cartons, the raw cardboard is cut into standard cardboard 200s of the desired shape and size through a cardboard cutting step. A base coat is evenly applied to one side of the standard cardboard 200 through a base coat spraying step, and after drying, a base coating 300 is formed. A pattern spraying and printing step applies waterproof ink to the base coating 300, and after drying, a waterproof pattern 400 is formed. A waterproof film 500 is adhered to the surface of the waterproof pattern 400 through a waterproof film 500 pasting step. A reflective paint spraying step evenly sprays a layer of reflective paint onto the side of the waterproof film 500 facing away from the waterproof pattern 400, and after drying, a reflective layer 600 is formed. A protective film 700 is adhered to the reflective layer 600 through a protective film 700 pasting step. The waterproof pattern 400 formed by the waterproof ink in the above-mentioned automatic ink spraying process for color-printed cartons exhibits excellent waterproof and moisture-proof performance. The reflective layer 600, composed of reflective paint, reflects sunlight, preventing strong light from irritating the waterproof pattern 400. The protective film 700 protects the reflective layer 600. The waterproof pattern 400 on the color-printed cartons produced by the above-mentioned automatic ink spraying process exhibits excellent resistance to fading and oxidation.

[0035] To enhance the waterproof performance of the waterproof ink, in one embodiment, the waterproof ink comprises the following components in parts by weight: 20 to 40 parts of water-based acrylic resin, 10 to 20 parts of water-based polyamide resin, 10 to 20 parts of water-based pigment, 5 to 10 parts of triethylamine, 2 to 4 parts of isopropanol, 0.5 to 1 part of sodium dodecylbenzenesulfonate, 5 to 15 parts of butyl acrylate, 5 to 10 parts of ethanol, and 8 to 16 parts of water. The waterproof ink composed of the above components forms a waterproof pattern 400 with excellent waterproof and moisture-proof properties.

[0036] To increase the reflectivity of the reflective layer 600, in one embodiment, the reflective coating comprises the following components in parts by weight: 10 to 30 parts polycarbonate, 13 to 27 parts high-gloss transparent polyurethane emulsion, 4 to 8 parts polytetrahydrofuran ether diol, 1 to 2 parts dibutyltin dilaurate, 0.5 to 1 part sodium dodecylbenzene sulfonate, 1 to 2 parts polyethylene wax, 12 to 22 parts titanium dioxide, 14 to 24 parts glass microspheres, 4 to 8 parts ethanol, and 10 to 18 parts water. The reflective layer 600 formed by the reflective coating composed of the above components can adhere firmly to the waterproof membrane 500, ensuring light transmittance while reflecting a large amount of sunlight, thereby protecting the waterproof pattern 400.

[0037] To increase the adhesion of waterproof ink, in one embodiment, the base coating comprises the following components in parts by weight: 12 to 25 parts epoxy acrylate resin, 14 to 28 parts ethyl methacrylate, 5 to 10 parts vinyl resin, 3 to 6 parts ethyl acetate, 2 to 3 parts propylene glycol butyl ether, 1 to 2 parts dimethyl ethanolamine, 4 to 7 parts diethylamine, 10 to 20 parts calcium carbonate powder, and 5 to 15 parts water. The base coating composed of the above components can firmly adhere to standard cardboard 200 to form a base coating 300, and on the other hand, it can increase the adhesion of waterproof ink, thereby reducing the risk of fading or discoloration of the waterproof pattern 400.

[0038] 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.

[0039] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An automatic ink spraying process for color-printed cartons, characterized in that, The process includes the following steps: Cardboard cutting steps: Cut the raw cardboard into standard cardboard shapes and sizes that meet the preset requirements; Base coat spraying steps: Apply a layer of base coat evenly to one side of a standard cardboard, and after drying, form a base coating; Pattern spraying and printing steps: Waterproof ink is sprayed onto the base coating and dried to form a waterproof pattern; Waterproof membrane application steps: Apply the waterproof membrane to the surface of the waterproof pattern; Reflective coating spraying steps: A layer of reflective coating is evenly sprayed onto the side of the waterproof membrane facing away from the waterproof pattern, and after drying, a reflective layer is formed; Protective film application steps: Apply the protective film to the reflective layer.

2. The process according to claim 1, characterized in that, In the base coating spraying step, the drying temperature is 40 to 45 degrees Celsius, and the drying time is 1 to 1.5 hours.

3. The process according to claim 2, characterized in that, In the base coating spraying step, the drying temperature is 42 degrees Celsius and the drying time is 1.2 hours.

4. The process according to claim 1, characterized in that, In the pattern spraying and printing step, the drying temperature is 45 degrees Celsius to 50 degrees Celsius, and the drying time is 1 hour to 2 hours.

5. The process according to claim 5, characterized in that, In the pattern spraying and printing step, the drying temperature is 48 degrees Celsius and the drying time is 1.5 hours.

6. The process according to claim 1, characterized in that, In the reflective coating spraying step, the drying temperature is 40 to 50 degrees Celsius, and the drying time is 1 to 2 hours.

7. The process according to claim 6, characterized in that, In the reflective coating spraying step, the drying temperature is 45 degrees Celsius and the drying time is 1.5 hours.

8. The process according to claim 1, characterized in that, The protective film is a PET film.

9. The process according to claim 1, characterized in that, The protective film is a PVC film.

10. The process according to claim 1, characterized in that, In the cardboard cutting step, a leveling machine is used to level the standard cardboard.

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