Manufacturing process of tinplate product and tinplate product

Abstract

The invention discloses a manufacturing process of a tinplate product, which at least comprises the following steps: a tinplate tagging blank is provided, the tinplate tagging blank at least comprises a front side and a back side which are arranged back to back, and the back side is provided with vertical lines; the back face of the tinplate tagging blank is arranged upwards and moves in the first direction so as to be close to ink jet printing equipment, a first included angle exists between the first direction and the vertical lines, and the first included angle ranges from 80 degrees to 100 degrees; and when the tinplate tagging blank reaches the position below a spray head of the ink jet printing equipment, the ink jet printing equipment is controlled to jet-print a two-dimensional code on the tinplate tagging blank. The reverse side of the tinplate tagging blank is arranged upwards and moves in the first direction to be close to the ink jet printing equipment, when the ink jet printing equipment performs ink jet printing on the tinplate, vertical lines are used for preventing ink diffusion, the quality of the printed two-dimensional code is high, the production process is simple, and the cost is low.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing processes, and particularly to a manufacturing process for tinplate products and tinplate products. Background Art

[0002] In the field of beer packaging, the bottle cap, as a core component to ensure product sealing, freshness, and safety, has always attracted much attention in terms of material selection and structural design. Traditional beer bottle caps are mostly made of aluminum or plastic materials. Aluminum bottle caps are widely used due to their lightweight and easy processing characteristics, but their mechanical strength is relatively limited, and they are prone to being deformed by external forces during transportation or storage, resulting in problems such as seal failure and air leakage, which in turn affect the beer flavor and quality stability.

[0003] In recent years, tinplate, as a traditional metal material, has gradually come into the industry's view due to its unique combination of properties. Compared with traditional aluminum materials, the mechanical strength of tinplate has been significantly improved, which can effectively resist external impacts and internal pressures, ensuring that the bottle cap maintains a stable sealing state throughout the filling, transportation, and storage cycles. Here, the tinplate refers to metals such as chromium-plated iron, tin-plated iron, or stainless iron.

[0004] With the upgrading of digital marketing and consumer interaction requirements, beer manufacturers generally use the method of printing two-dimensional codes on the back of bottle caps to achieve functions such as product traceability, promotional activities, and brand promotion. However, in order to meet the printing resolution requirements, the traditional tinplate coding process usually needs to coat a layer of primer and then perform the coding operation, which further increases the cost pressure. Therefore, there is an urgent need for a manufacturing process for tinplate products with high-quality two-dimensional codes and low costs. Summary of the Invention

[0005] In view of this, the present invention provides a manufacturing process for tinplate products and tinplate products to solve the problem of how to complete a two-dimensional code of relatively high quality at low cost when printing a two-dimensional code on tinplate.

[0006] In a first aspect, the present invention provides a manufacturing process for tinplate products, which at least includes the following steps: Provide a tinplate coding blank, where the tinplate coding blank at least includes a front side and a back side arranged opposite to each other, and the back side has vertical lines; Set the back side of the tinplate coding blank upward and move it in a first direction to approach an ink jet printing device, where a first angle exists between the first direction and the vertical lines, and the first angle is between 80° and 100°; When the tinplate coding blank reaches below the nozzle of the ink jet printing device, control the ink jet printing device to print a two-dimensional code on the tinplate coding blank.

[0007] Compared with the prior art, the manufacturing process of a tinplate product according to the present invention, as opposed to the production method of applying a base coat first and then performing coding operation in the prior art, sets the reverse side of the tinplate coding blank upward and moves it in a first direction to approach the ink jet printing device. Since there is a first angle between the first direction and the vertical lines, and the first angle is between 80° and 100°, when the ink jet printing device sprays ink on the tinplate, the vertical lines prevent the ink from spreading, resulting in a relatively high quality of the printed two-dimensional code. This production process utilizes the vertical lines. In addition to ensuring the quality of two-dimensional code coding, it eliminates the coating process of applying a base coat before the coding operation, achieving significant energy conservation and environmental protection. Moreover, the production process is simple and the cost is relatively low.

[0008] In an alternative embodiment, the first angle is 90°.

[0009] In an alternative embodiment, after controlling the ink jet printing device to print a two-dimensional code on the tinplate coding blank, the reverse side is coated with an adhesive coating containing modified alkyd resin.

[0010] In an alternative embodiment, before coating the reverse side with an adhesive coating containing modified alkyd resin and after controlling the ink jet printing device to print a two-dimensional code on the tinplate coding blank, the steps further include: After completing the printing of the two-dimensional code, a UV curing lamp is used to cure the two-dimensional code.

[0011] In an alternative embodiment, the steps further include: Provide a tinplate substrate, and cold roll the tinplate substrate to generate the vertical lines.

[0012] In an alternative embodiment, the method further includes: the steps further include: Coat the front side of the tinplate coding blank with a coating containing modified polyester resin; Perform LED ink printing on the front side of the tinplate coding blank to print a preset pattern.

[0013] In an alternative embodiment, the method further includes: After performing LED ink printing on the front side of the tinplate coding blank to print a preset pattern, the steps further include: Use a UV curing lamp to continuously cure the preset pattern.

[0014] In an alternative embodiment, after using a UV curing lamp to continuously cure the preset pattern, the steps further include: Coat a layer of high-temperature resistant varnish on the preset pattern printed by LED ink printing.

[0015] In an alternative embodiment, the energy value generated by the UV curing lamp is 900 - 1100 mJ / cm².

[0016] In a second aspect, the present invention provides a tinplate product manufactured by the manufacturing process described in any one of the above embodiments.

[0017] Compared with the prior art, in the production method of the tinplate product of the present invention, after coating a bottom oil and then performing the coding operation in the prior art, the tinplate coding blank is set with the reverse side facing up and moves along the first direction to approach the ink jet printing device. Since there is a first included angle between the first direction and the vertical texture, and the first included angle is between 80° and 100°, when the ink jet printing device sprays ink on the tinplate, the vertical texture prevents the ink from spreading, resulting in a relatively high quality of the printed two-dimensional code; by utilizing the vertical texture, in addition to ensuring the coding quality of the two-dimensional code, the coating process of coating a bottom oil before the coding operation is removed, achieving significant energy conservation and environmental protection, and the production process is not only simple but also has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a flowchart of the production process of a tinplate product according to an embodiment of the present invention; Figure 2 is Figure 1 a schematic diagram of the movement of the tinplate coding blank along the first direction in step S2; Figure 3 is a flowchart of the production process of another tinplate product according to an embodiment of the present invention; Figure 4 is a flowchart of the production process of another tinplate product according to an embodiment of the present invention; Figure 5 is a flowchart of the production process of another tinplate product according to an embodiment of the present invention.

[0020] In the figure: 1. Tinplate coding blank; 10. Vertical texture; 2. Transmission device; 3. Ink jet printing device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate 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 intermediate element at the same time.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] As Figure 1 and Figure 2 shown, a manufacturing process of a tinplate product of the present invention includes the following steps: S1. Provide a tinplate coding blank 1; Specifically, the tinplate coding blank 1 at least includes a front side and a back side arranged opposite to each other, and the back side has vertical lines 10. Preferably, there are multiple vertical lines 10, and a certain distance is spaced between adjacent vertical lines.

[0025] S2. Set the back side of the tinplate coding blank 1 upward and move it in a first direction to approach the ink jet printing device 3; Specifically, as Figure 2 there is a first included angle α between the first direction and the vertical lines 10, and the first included angle α is between 80° and 100°. The back side of the tinplate coding blank 1 can be placed upward on the transmission device 2, and the vertical lines 10 of the tinplate coding blank 1 are placed at a first included angle α with the first direction, and the transmission device 2 transmits the tinplate coding blank 1 along the first direction. Among them, the transmission speed of the transmission device 2 is 25 m / min - 35 m / min. If the transmission speed is too fast, it is easy to cause unclear coding. If the transmission speed is too slow, it will affect the subsequent curing process. Exemplarily, the transmission speed can be 28 m / min, 30 m / min, etc., and no specific limitation is made here.

[0026] S3. When the tinplate coding blank 1 reaches below the nozzle of the ink jet printing device 3, control the ink jet printing device 3 to print a two-dimensional code on the tinplate coding blank 1.

[0027] Specifically, before production, it is necessary to adjust the distance between the nozzle of the inkjet printing device 3 and the tinplate coding blank 1, and the lower the distance between the two, the better.

[0028] In this embodiment, compared with the prior art, after coating a layer of primer oil on the tinplate product, a production method of performing coding operation is adopted. The tinplate coding blank 1 is set with the reverse side facing up and moves along the first direction to approach the inkjet printing device 3. Since there is a first included angle between the first direction and the vertical texture 10, and the first included angle is between 80° and 100°, when the inkjet printing device 3 sprays ink on the tinplate coding blank 1, the vertical texture 10 is used to prevent the ink from spreading, so that the printed two-dimensional code has a high quality; this production process utilizes the vertical texture 10. In addition to ensuring the coding quality of the two-dimensional code, the coating process of coating a layer of primer oil before the coding operation is removed, achieving significant energy conservation and environmental protection. Not only is the production process simple, but the cost is also low.

[0029] In one embodiment, the first included angle α is 90°. By setting the first direction perpendicular to the vertical, the vertical texture 10 maximally spreads the ink pattern, further ensuring the coding quality of the two-dimensional code.

[0030] Please further refer to Figure 3 In one embodiment, after step S3 of the production process of a tinplate product of the present invention, the following steps are further included: S5. After controlling the inkjet printing device to print a two-dimensional code on the tinplate coding blank, coat the reverse side with an adhesive coating containing modified alkyd resin.

[0031] Specifically, coat with a weight of 7-9 g / ㎡ of the adhesive coating of modified alkyd resin. The printed two-dimensional code can be protected by the adhesive coating of modified alkyd resin to avoid being affected by moisture, corrosion, etc.

[0032] Please further refer to Figure 4 In one embodiment, between steps S3 and S5 of the production process of a tinplate product, the following steps are further included: After completing the printing of the two-dimensional code, use a UV curing lamp to cure the two-dimensional code.

[0033] Specifically, immediately use a UV curing lamp for curing after coding to prevent ink transfer and ink bleeding. After curing, coat with a weight of 7-9 g / ㎡ of the adhesive coating of modified alkyd resin. The printed two-dimensional code can be protected by the adhesive coating of modified alkyd resin to avoid being affected by moisture, corrosion, etc.

[0034] Preferably, the energy value generated by the UV curing lamp is 900-1100 mJ / cm.

[0035] In one embodiment, a production process for tinplate products further includes the following steps before step S1: A tinplate substrate is provided, and the tinplate substrate is cold-rolled to form the vertical lines 10 .

[0036] Specifically, the cold rolling process, through the rolling and stretching process at room temperature, effectively changes the internal structure and organization of the tinplate substrate, thereby significantly improving its hardness, strength and ductility. In addition, the vertical lines 10 can be used in step S2 to prevent ink diffusion.

[0037] Please see further Figure 5 In one embodiment, the production process of a tinplate product of the present invention further comprises the following steps after step S1: S6. Coating the front side of the tinplate coding blank 1 with a coating containing a modified polyester resin.

[0038] The main purpose of applying a primer to the front side of the tinplate coding blank 1 is to cover up the surface defects of the tinplate, so that the LED ink printing has better flatness, and the printed LED ink has better adhesion and corrosion resistance under the primer on the front side. Because the tinplate coding blank 1 is previously formed with vertical lines 10, the flatness of the front side of the tinplate coding blank 1 is affected to a certain extent, which easily leads to uneven patterns when the LED printing ink is subsequently applied on the front side of the tinplate coding blank 1.

[0039] Preferably, the modified polyester resin coating primer is applied at a coating weight of 4-12 g / m2.

[0040] S7. Print the front side of the tinplate coded blank with LED ink to print a preset pattern.

[0041] Specifically, LED ink printing involves printing customer-provided standard patterns, such as the Snowflake Brave the World bottle cap pattern or the Budweiser Gold bottle cap pattern. Ink models include Ultra Color ULED-6614 Bright Red and Ultra Color ULED-60 Green. It's important to note that the requirements for these standard patterns differ from those for QR codes. While standard patterns require a smooth and aesthetically pleasing surface, QR codes require accurate recognition and therefore place lower demands on flatness than standard patterns.

[0042] In one embodiment, the production process of a tinplate product of the present invention further comprises the following steps after step S7: S8. Use a UV curing lamp to continuously cure the preset pattern.

[0043] Specifically, after the LED prints the preset pattern, a UV curing lamp is immediately used for curing to prevent ink transfer and ink blurring.

[0044] Preferably, the energy value generated by the UV curing lamp is 900-1100 mJ / cm².

[0045] In one embodiment, after step S8 in the production process of a tinplate product of the present invention, the following steps are further included: S9. Coat a layer of high-temperature resistant varnish on the preset pattern printed with LED ink.

[0046] Specifically, after printing a pattern with LED ink, if it is not protected, the pattern is easily scratched and damaged. At this time, a glazing process is required, that is, a layer of high-temperature resistant varnish is coated on the preset pattern printed with LED ink to protect the cover pattern, improve the corrosion resistance performance, and also have a necessary smooth effect for the subsequent punching operation. The coating weight is 7-10 g / ㎡; Exemplarily, the model of the high-temperature resistant varnish is Yaotian 2688.

[0047] The embodiment of the present invention also provides a tinplate product made by the manufacturing process described in any one of the above embodiments.

[0048] Compared with the prior art production method of coating a layer of primer and then performing coding operations, for a tinplate product of this embodiment, the reverse side of the tinplate coding blank is set upward and moves along the first direction to approach the inkjet printing device. Since there is a first angle between the first direction and the vertical lines, and the first angle is between 80° and 100°, when the inkjet printing device sprays ink on the tinplate, the vertical lines prevent the ink from spreading, making the printed two-dimensional code of high quality; this tinplate product utilizes the vertical lines, in addition to ensuring the quality of two-dimensional code coding, eliminates the coating process of coating a layer of primer before the coding operation, achieving significant energy conservation and environmental protection, and not only has a simple production process but also a low cost.

[0049] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not conflict, it should be considered as the scope described in this specification.

[0050] The above embodiments only represent the preferred implementation modes of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A manufacturing process for tinplate products, characterized in that, At least include the following steps: Provide a tinplate coding blank, the tinplate coding blank at least includes a front side and a back side arranged opposite to each other, and the back side has vertical lines; Set the back side of the tinplate coding blank upward and move it along a first direction to approach the ink jet printing device, wherein, there is a first included angle between the first direction and the vertical lines, and the first included angle is between 80° and 100°; When the tinplate coding blank reaches below the nozzle of the ink jet printing device, control the ink jet printing device to print a two-dimensional code on the tinplate coding blank.

2. The manufacturing process of a tinplate product as described in claim 1, characterized in that: The first included angle is 90°.

3. The manufacturing process of a tinplate product as claimed in claim 1, wherein: After controlling the ink jet printing device to print a two-dimensional code on the tinplate coding blank, coat the back side with an adhesive coating containing modified alkyd resin.

4. The manufacturing process of a tinplate product as claimed in claim 3, wherein, Before coating the back side with an adhesive coating containing modified alkyd resin and after controlling the ink jet printing device to print a two-dimensional code on the tinplate coding blank, the steps further include: After completing the printing of the two-dimensional code, cure the two-dimensional code with a UV curing lamp.

5. The manufacturing process of a tinplate product as claimed in claim 1, characterized in that, The steps further include: Provide a tinplate substrate, and cold roll the tinplate substrate to generate the vertical lines.

6. The manufacturing process of a tinplate product as described in claim 1, characterized in that, The steps further include: Coat the front side of the tinplate coding blank with a coating containing modified polyester resin; Perform LED ink printing on the front side of the tinplate coding blank to print a preset pattern.

7. The manufacturing process of a tinplate product according to claim 6, characterized in that, After performing LED ink printing on the front side of the tinplate coding blank to print a preset pattern, the steps further include: Continuously cure the preset pattern with a UV curing lamp.

8. The manufacturing process of a tinplate product according to claim 7, characterized in that, After continuously curing the preset pattern with a UV curing lamp, the steps further include: Coat a layer of high-temperature resistant varnish on the preset pattern printed by LED ink.

9. The manufacturing process of a tinplate product as claimed in claim 4 or 7, characterized in that, The energy value generated by the UV curing lamp is 900 - 1100 mJ / cm.

10. A tinplate product, characterized in that, Made by the manufacturing process according to any one of claims 1 - 9.

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