A printing method for making lenses on paper products and its supporting equipment

Abstract

The present invention relates to a printing method for producing lenses on paper products and its supporting equipment. The printing method includes: producing a screen; preparing ink; silk screen printing and transfer printing; separating excess electroplated aluminum and UV curing. The supporting equipment includes a silk screen machine, which includes a silk screen plate and a scraper, a machine carrier, and a silk screen machine and a transport belt arranged on the machine carrier. A transfer machine is provided at the front end of the silk screen machine. The transfer machine includes a film loading roller and a film stretching roller, a film pressing roller, a film receiving roller, and a film receiving roller connected thereto in sequence. The transfer machine also includes a pressing transfer roller arranged between the film pressing roller and the film receiving roller. The method for producing lenses using a silk screen printing machine + transfer process technology proposed by the present invention, by adding a group of transfer machines to the silk screen printing machine head position, directly connects the transfer machine and the silk screen printing machine to complete the lens production, greatly optimizing the process flow and reducing the equipment operation cost.

Description

Technical Field

[0001] The invention belongs to the field of printing technology, and particularly relates to a printing method for making lenses on paper products and supporting equipment thereof. Background Art

[0002] The most common hot stamping technology for anodized aluminum in printing plants uses traditional hot stamping machines such as flat-press, round-press, and flat-press machines. These machines require a "hot stamping plate" to complete the hot stamping. Different hot stamping plates require a separate hot stamping plate for each pattern position, resulting in high production costs. Furthermore, existing lens production methods involve anodized aluminum manufacturers using holographic lithography and molding to create a positioned paper lens or hot stamped anodized aluminum lenses. This technology suffers from long production cycles, high costs, and a manufacturing process that printing companies lack mastery. Furthermore, this lens production process only produces a simple holographic lithography effect, resulting in a monotonous printed product and easy imitation, making the holographic lens unable to meet higher anti-counterfeiting requirements. Therefore, a new hot stamping technology is needed to address the existing technical issues of producing lenses on paper products. Summary of the Invention

[0003] In view of the above problems, the present invention provides a printing method for making lenses on paper products and its supporting equipment.

[0004] The specific technical solution is: a printing method for making lenses on paper products, comprising the following steps:

[0005] Step 1, making the screen: first make the pre-press pattern, make a small or large circle with a solid bottom, pass the small or large circle with the solid bottom through the screen, and then make the screen by printing the pattern of the screen;

[0006] Step 2, ink preparation: The ink is composed of a binder, a plasticizer and PVC. When preparing, 5g of EVA resin, 2.1g of plasticizer and 1.85g of PVC are polished, stirred and evenly mixed to prepare the ink;

[0007] Step 3: Screen printing and transfer printing: First, install the prepared screen on the screen printing machine and pour the prepared ink on the screen; then install a set of transfer machines on the screen printing head and install electroplated aluminum on the transfer machines; start printing, print ink on the position of the paper product where the lens needs to be made, and the paper product printed with ink is transported to the transfer machine via a conveyor belt. The transfer machine equipment presses and transfers electroplated aluminum to the place where the ink is printed as the paper product passes, thus forming a printed product with a lens effect;

[0008] Step 4: Separate excess electroplated aluminum and UV cure: Separate the paper products that have completed screen printing and transfer to remove excess electroplated aluminum, and then transport them to the UV drying tunnel to complete the curing under the light curing temperature of the equipment, thereby obtaining a paper product with a lens.

[0009] The present invention also provides supporting equipment for a method of making lens printing on paper products, including a silk screen machine, the silk screen machine including a silk screen plate and a scraper, and is characterized in that it also includes a machine carrier and a silk screen machine and a transport belt arranged on the machine carrier. A transfer machine is provided at the front end of the silk screen machine, the transfer machine includes a film loading roller and a film stretching roller, a film pressing flattening roller, a film receiving stretching roller, and a film receiving roller connected thereto in sequence, which cooperate to complete the film loading, film pressing, and film receiving of electrochemical aluminum. The transfer machine also includes a pressing transfer roller arranged between the film pressing flattening roller and the film receiving stretching roller, which is used to complete the pressing of the electrochemical aluminum film on paper products and the transfer after pressing.

[0010] Furthermore, a curing lampshade box is provided just above the lamination transfer roller, and a UV curing lamp is provided in the curing lampshade box for curing the paper product.

[0011] Beneficial effects of the present invention: The method of manufacturing lenses using a screen printing machine + transfer technology proposed in the present invention, by adding a group of transfer machines to the position of the screen printing machine head, enables the transfer machine and the screen printing machine to be directly connected to complete the lens manufacturing, thereby greatly optimizing the process flow and reducing the equipment operation cost; by adjusting the screen ink to match the ink with the electroplated aluminum, the requirements of the screen printing hot stamping technology are met, and the process defect of the screen printing machine that cannot hot stamp is solved, so that small printing companies without hot stamping machines can also implement the hot stamping process, and there is no need to use the electroplated aluminum manufacturer to produce holographic lithography, mold pressing to form positioning paper lenses or positioning hot stamping electroplated aluminum lenses, so that the lenses can be produced, greatly improving the production efficiency of the printing company, shortening the printing cycle, and reducing printing costs. At the same time, the printed products are rich and diverse, which not only enriches the diversity of printed products, but also fundamentally eliminates the possibility of counterfeiting the same lens effect on the packaging, greatly improving the functionality and anti-counterfeiting properties of paper packaging products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the effect display of the paper product with lens of the present invention Figure 1 ;

[0013] Figure 2 This is the effect display of the paper product with lens of the present invention Figure 2 ;

[0014] Figure 3 This is a front view of the supporting equipment for a method of producing lens printing on paper products according to the present invention;

[0015] In the figure: 1-machine carrier, 2-screen machine, 201-screen plate, 202-ink, 203-squeegee, 3-transfer machine, 301-pressing transfer roller, 302-film loading roller, 303-film stretching roller, 304-film pressing and flattening roller, 305-film receiving and stretching roller, 306-film receiving roller, 4-curing lamp cover box, 5-transport belt. Implementation Method

[0016] In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0017] This embodiment provides a printing method for making a lens on a paper product, comprising the following steps:

[0018] Step 1, making the screen: first make the pre-press pattern, make a small or large circle with a solid bottom, pass the small or large circle with the solid bottom through the screen, and then make the screen by printing the pattern of the screen;

[0019] Step 2, ink preparation: The ink of this process method is a liquid glue with a certain viscosity, which is composed of an adhesive, a plasticizer and PVC. When preparing, 5g of EVA resin, 2.1g of plasticizer and 1.85g of PVC are polished, stirred and evenly mixed to prepare the ink;

[0020] Step 3: Screen printing and transfer printing: First, install the prepared screen on the screen printing machine and pour the prepared ink on the screen. Then, install a transfer machine (rotary laminator) on the screen printing head and install anodized aluminum on the transfer machine. Start printing and print ink on the paper product where the lens needs to be made. The paper product printed with ink is transported to the transfer machine via a conveyor belt. The transfer machine presses and transfers the anodized aluminum to the ink-printed area as the paper product passes through, thus forming a printed product with a lens effect.

[0021] The present invention installs a group of transfer machines at the position of the screen printing head, so that the screen printing machine and the transfer machine can be directly connected to complete the two processes of screen printing and transfer, avoiding the separation of the two processes, greatly optimizing the process flow and reducing the equipment operation cost.

[0022] Generally, transfer processes are divided into dry transfer, wet transfer, thermal transfer, and pressure transfer. The present invention is mainly completed by cooperating with "wet transfer" and "pressure transfer"; "wet transfer" is to pre-coat a release layer (self-adhesive ink) on the paper, and "pressure transfer" uses pressure and ink as transfer conditions. When transferring, the ink is printed on the paper in advance, and the smooth side of the electroplated aluminum substrate is aligned with the substrate and pressure is applied to transfer the pattern to the substrate. Then, the excess carrier film (i.e., electroplated aluminum) is removed to obtain the printed product.

[0023] The electroplated aluminum mentioned here is a hot stamping material (abbreviated as: hot stamping film), which is a film material with multiple layers of release layers. The electroplated aluminum material structure includes a release layer, a color layer (such as silver electroplated aluminum), an aluminum plating layer, an adhesive layer, etc.

[0024] During the transfer process, the transfer machine presses the paper as it passes. When the ink on the paper is pressurized, the plasticizer expands under pressure. The expanded plasticizer increases the viscosity of the ink. At this time, the ink viscosity and the electroplated aluminum adhesive layer adhere to each other, completing the electroplated aluminum transfer. At the same time, under the action of the light curing temperature of the equipment, the PVC particles expand and adhere to the electroplated aluminum substrate hot melt adhesive again and solidify, thereby completing the transfer of the electroplated aluminum pattern to the varnish surface, forming a printed product with a lens effect.

[0025] Step 4, separation of excess electroplated aluminum and UV curing: Separate the paper products that have completed screen printing and transfer to remove excess electroplated aluminum, and then transport them to the UV drying tunnel to complete the curing under the light curing temperature of the equipment, thereby obtaining a paper product with a lens. The specific finished product effect is shown as follows Figure 1 、 Figure 2 shown. Example

[0026] like Figure 3 As shown, this example provides a supporting equipment for a method of making lens printing on paper products, including a screen machine 2, which includes a screen plate 201 and a scraper 203, which is an existing equipment structure.

[0027] The present invention improves the machine carrier 1 and the transport belt 5 (mainly by improving the sizes of the machine carrier 1 and the transport belt 5), thereby enabling the front end of the screen machine 2 to directly connect with the transfer machine 3, thereby realizing the combined use of the two devices.

[0028] At the same time, in order to complete the transfer, improvements and adjustments are made to the spatial position layout of the film loading roller 302, film stretching roller 303, film pressing and flattening roller 304, film receiving and stretching roller 305, and film receiving roller 306 of the transfer machine to adapt to the new process technology, that is, the transfer machine 3 includes a film loading roller 302 and a film stretching roller 303, film pressing and flattening roller 304, film receiving and stretching roller 305, and film receiving roller 306 connected thereto in sequence, which cooperate to complete the film loading, film pressing, and film receiving of the electrochemical aluminum. The transfer machine 3 also includes a pressing transfer roller 301 arranged between the film pressing and flattening roller 304 and the film receiving and stretching roller 305, which is used to complete the pressing of the electrochemical aluminum film on paper products and the transfer after pressing.

[0029] A curing lampshade box 4 is additionally provided just above the lamination transfer roller 301 , and a UV curing lamp is provided in the curing lampshade box 4 for curing the paper product.

[0030] When starting printing, first put the paper into the screen machine 2, add ink 202 on the screen plate 201, and the screen machine transmission mechanism transmits the printing power. The scraper 203 squeezes the ink 202 on the screen plate 201 during movement. Under the squeezing action of the scraper 203, the ink 202 passes through the mesh smoothly and is printed on the surface of the printing material, completing the ink printing of the screen machine 2. Then the transport belt 5 transports the printing material to the transfer machine 3. The film loading roller 302 of the transfer machine 3 is pre-loaded with electroplated aluminum. The electroplated aluminum passes through the film stretching roller 303, the film pressing and flattening roller 304, the pressing transfer roller 301, the film receiving and stretching roller 305, and the film receiving roller 306 in sequence, and is fixed between the film loading roller 302 and the film receiving roller 306. The electroplated aluminum is released under the rotation of the film stretching roller 303 and the film pressing and flattening roller 304, and is transferred to the printing material after the ink printing under the pressing action of the pressing transfer roller 301, so that the printing material has a lens effect. The film after the electroplated aluminum is transferred is tightened by the film receiving and stretching roller 305 and the film receiving roller 306.

[0031] The printed material is simultaneously dried and cured under the curing temperature of the UV curing light from the curing lamp box 4, located directly above the lamination transfer roller 301, to produce a finished paper product with a lens. The curing lamp box 4 is typically located at the rear end of a screen printing machine or transfer printing machine. After printing is complete, the printed material is transported to the curing lamp box via a conveyor belt 5 for curing. However, the present invention relocates the curing lamp box 4 above the transfer printing machine, allowing the printed material to be cured directly upon transfer completion. This shortens the time it takes to produce the finished product and improves overall printing efficiency.

[0032] The present invention proposes a method for producing lenses using a screen printer combined with a transfer process. By adding a transfer printer to the drying channel of the screen printer, the transfer printer and the screen printer are directly connected to complete lens production, significantly optimizing the process flow and reducing equipment operating costs. By adjusting the screen ink to match the ink with the electroplated aluminum, the requirements for screen printing hot stamping technology are met, resolving the technical defect of screen printers that cannot perform hot stamping. This allows small printing companies without hot stamping machines to implement the hot stamping process. Furthermore, the lenses can be produced without resorting to holographic lithography, molding, or hot stamping electroplated aluminum lenses produced by electroplated aluminum manufacturers. This significantly improves the production efficiency of printing companies, shortens the printing cycle, and reduces printing costs. Furthermore, the resulting printed products are rich and diverse, not only enriching the diversity of printed products but also fundamentally eliminating the possibility of counterfeiting the same lens effect on packaging, significantly improving the functionality and anti-counterfeiting properties of paper packaging.

[0033] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A printing method for producing a lens on a paper product, characterized in that: The steps include: Step 1, making the screen: first make the pre-press pattern, make a small or large circle with a solid bottom, pass the small or large circle with the solid bottom through the screen, and then make the screen by printing the pattern of the screen; Step 2, ink preparation: The ink is composed of a binder, a plasticizer and PVC. When preparing, 5g of EVA resin, 2.1g of plasticizer and 1.85g of PVC are polished, stirred and evenly mixed to prepare the ink; Step 3, silk screen printing and transfer printing: first install the prepared silk screen on the silk screen printing machine, and pour the prepared ink on the silk screen; then install a set of transfer machines on the silk screen printing head, and install electroplated aluminum on the transfer machines; Start printing, print ink on the position of paper products where lenses need to be made, and then convey the paper products printed with ink to the transfer machine via a conveyor belt. The transfer machine presses and transfers anodized aluminum to the places where ink is printed as the paper products pass through, thus forming printed products with lens effects; During the transfer process, the transfer machine presses the paper as it passes through. When the ink on the paper is compressed, the plasticizer expands under pressure. The expanded plasticizer increases the viscosity of the ink. At this time, the ink viscosity and the anodized aluminum adhesive layer adhere to each other, completing the anodized aluminum transfer. At the same time, under the action of the light curing temperature of the equipment, the PVC particles expand and adhere to the anodized aluminum base material hot melt adhesive again and solidify, thereby completing the transfer of the anodized aluminum pattern to the varnish surface, forming a printed product with a lens effect; Step 4: Separate excess electroplated aluminum and UV cure: Separate the paper products that have completed screen printing and transfer to remove excess electroplated aluminum, and then transport them to the UV drying tunnel to complete the curing under the light curing temperature of the equipment, thereby obtaining a paper product with a lens.

2. A printing method for making a lens on a paper product according to claim 1, characterized in that: The supporting equipment used in the method includes a screen printing machine, which includes a screen plate and a scraper, as well as a machine carrier and a transport belt arranged on the machine carrier. A transfer machine is provided at the front end of the screen printing machine, which includes a film loading roller and a film stretching roller, a film pressing flattening roller, a film receiving stretching roller, and a film receiving roller connected thereto in sequence, and cooperates to complete the film loading, film pressing, and film receiving of the electrochemical aluminum. The transfer machine also includes a pressing transfer roller arranged between the film pressing flattening roller and the film receiving stretching roller, which is used to complete the pressing of the electrochemical aluminum film on paper products and the transfer after pressing.

3. The printing method for making a lens on a paper product according to claim 2, characterized in that: A curing lampshade box is provided just above the lamination transfer roller, and a UV curing lamp is provided in the curing lampshade box for curing paper products.

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