Aluminum profile heat transfer printing color pattern customization method and system

Abstract

The invention belongs to the field of personalized customization of colors and patterns on the surface of an aluminum profile, and particularly relates to an aluminum profile heat transfer printing color and pattern customization method, the inspiration of the technology comes from the digital transfer printing technology of cloth, and the customized patterning effect on the surface of the aluminum profile is achieved through digital pattern design and ink printing. Different from traditional grainy paper transfer printing, the technology is characterized in that a user can design patterns and colors by himself / herself through PS software, and then the patterns and the colors are accurately restored to the surface of the aluminum profile. According to the method, cloth transfer printing is used for reference, desired colors and patterns are designed through PS and printed on transfer printing paper for cloth through an ink reel printer, the aluminum profile wrapped by the transfer printing paper is placed in a profile transfer printing furnace according to a normal aluminum profile transfer printing method, the transfer printing temperature and time of the printed transfer printing paper are different from those of heat sublimation transfer printing paper, and the transfer printing temperature and time of the heat sublimation transfer printing paper are different from those of the heat sublimation transfer printing paper. The temperature of the printed transfer paper is increased in a stepped manner during transfer printing.

Description

Technical Field

[0001] This invention belongs to, but is not limited to, the field of personalized customization of color and pattern on aluminum profile surfaces, and particularly relates to a method and system for customizing color and pattern on aluminum profiles via thermal transfer printing. Background Technology

[0002] The existing heat transfer technology uses sublimation transfer paper to transfer heat onto the surface of aluminum profiles. Sublimation transfer paper can only be mass-produced. For colors that are not produced in large quantities, it is quite difficult to customize colors, especially given the demand for uniform colors for doors, walls and cabinets in recent years.

[0003] Currently used sublimation transfer paper requires mass production, and customizing colors and textures is difficult.

[0004] In the past two years, the demand for matching doors, walls, and cabinets in the same color has increased. It is easy to match the color of wooden doors and cabinets, but it is more difficult to match the color of aluminum profile doors due to the different material. Some people use aluminum profile surface coating process to achieve the same color as wooden doors and cabinets, but the coating is made of PVC film, which is prone to fading, peeling, and other problems later. The purpose of the new technology is to allow the color and pattern of the aluminum profile surface to meet the requirements of small-batch customization and satisfy the demand for matching the color of doors, walls, and cabinets.

[0005] Existing technology can be found in the process of heat transfer printing on anodized aluminum surfaces disclosed in US3484342A. In this document, after the surface of a coated or dyed aluminum plate is treated, it is pressed tightly against transfer paper with a mirrored pattern printed on it. Then, the dye is vaporized by heating and condensed on the aluminum surface to form a pattern ([Google Patent][1]). This technology allows for multi-color printing and does not rely on traditional methods such as stencils and prints, and has a better decorative effect. However, it uses a high-temperature, short-time melting and dyeing process (such as a heating temperature range of 250-450°F, or about 121-232°C), and does not have in-depth control over the process of color consistency or customized production.

[0006] However, this existing technology has two obvious technical problems: First, it lacks a unified color correction mechanism in terms of color reproduction. Because it does not involve scanning correction or parameter adjustment to ensure that the printed color is consistent with the standard color card, the actual finished product may have obvious color difference. Second, it does not consider the uniformity of the temperature field and the staged heating strategy during the heat transfer process, which may cause uneven heat distribution inside the furnace cavity, resulting in local color deviation or printing defects. It is especially difficult to meet the needs of small-batch customized production and door, wall and cabinet color matching. Summary of the Invention

[0007] To address the problems existing in the prior art, this invention provides a method for customizing color patterns by heat transfer printing on aluminum profiles.

[0008] This invention is implemented as follows: a method for customizing color patterns by heat transfer printing on aluminum profiles, the technology comprising:

[0009] S1's entire process is inspired by digital transfer technology for fabrics. Through digital pattern design and ink printing, it achieves customized patterned effects on the surface of aluminum profiles. The key point is that users can design patterns and colors themselves using PS software and then accurately reproduce them on the surface of aluminum profiles.

[0010] S2, in the initial stage of the process, users need to use image processing software such as Photoshop to complete the design of patterns, colors, and resolution. The designed file must meet high resolution and CMYK mode to ensure accurate color reproduction on the subsequent roll-to-roll ink printer;

[0011] S3. The designed pattern is printed onto special fabric transfer paper using an ink roll printer. This type of transfer paper differs from thermal sublimation transfer paper; its ink layer thickness, adhesion, and heat resistance are all adapted to ensure that the pigment can be fully released when the aluminum profile surface is heated subsequently.

[0012] S4. The prepared transfer paper needs to be wrapped in the conventional aluminum profile transfer method, that is, the paper surface is tightly attached to the profile surface, and vacuum or mechanical pressing is used to ensure no wrinkles or air bubbles, thereby ensuring the complete transfer of the pattern.

[0013] S5, the wrapped profile then enters a dedicated profile transfer oven;

[0014] S6 employs a "stepped heating" strategy, rather than a single constant temperature heating, to ensure sufficient transfer and penetration of ink onto the aluminum profile surface. This means that in the transfer oven, the temperature is gradually increased in multiple stages, allowing the ink layer to soften, release, and form a strong bond with the aluminum surface.

[0015] S7, the first stage of the stepped heating is usually kept at a low temperature for slow preheating, so that the ink molecules in the transfer paper are initially activated, while avoiding sudden temperature rise that could cause paper warping or ink blistering.

[0016] S8, in the subsequent mid-stage heating phase, the temperature gradually rises to the critical range for ink release, causing the ink to gradually transfer from the paper to the surface of the aluminum profile; the time and temperature slope controlled in this stage have a great impact on the clarity and color saturation of the pattern.

[0017] S9, during the final high-temperature holding stage, the furnace temperature is maintained close to the curing point, allowing the ink to undergo a strong thermosetting bond on the aluminum profile surface, forming a wear-resistant and fade-resistant colored decorative layer. This stage ensures that the pattern is not only completely transferred but also tightly bonded to the substrate;

[0018] After the entire stepped heating process is completed, the aluminum profile needs to be cooled and the paper is peeled off. After peeling off the transfer paper, the surface of the aluminum profile can present a complete, colorful and personalized pattern, realizing the full-process digitalization and customization from pattern design to surface transfer.

[0019] This invention first breaks through the reliance on mass production in traditional aluminum profile transfer printing processes at the technical implementation level. Drawing on fabric transfer printing technology and combining image processing and thermal transfer techniques, it enables users to independently design colors and patterns in Photoshop software, then print the patterns onto transfer paper using an ink roll printer, ultimately completing the transfer process on the profile surface. Unlike conventional thermal sublimation transfer paper, the printing transfer paper used in this invention exhibits differences in temperature and time control, employing a stepped heating strategy. This makes small-batch and customized production possible, significantly improving process flexibility and market adaptability.

[0020] Secondly, this invention proposes a completely new solution for color consistency control. Addressing the color difference issues caused by the display screen and printer ink during previous color adjustments in Photoshop software, this invention uses a high-definition scanner to collect data from a standard color chart, obtaining data closer to true colors, and then precisely adjusts brightness, contrast, and saturation in the software. This standardized color correction process, coupled with incremental fine-tuning using test samples, effectively solves the problem of color inconsistency. This technological advancement ensures that the transferred product visually maintains a high degree of consistency with the color chart, meeting the market demand for unified color matching for doors, walls, and cabinets.

[0021] Furthermore, this invention proposes an improvement in the temperature field uniformity of the transfer oven. Traditional transfer ovens often suffer from uneven color transfer due to uneven temperature distribution within the oven cavity. This invention addresses this by adding two 1.5 kW rotating blowers to the upper part of the oven cavity, creating dynamic airflow circulation and resulting in a more uniform temperature distribution. Simultaneously, it employs a stepped temperature control process: preheating at 135℃ for 10 minutes and then raising the temperature to 145℃ for 5 minutes. This avoids uneven heating of the material within a short period and ensures stable bonding between the color layer and the substrate. These technical measures significantly improve the stability and uniformity of the transfer on the profile surface.

[0022] This invention not only solves practical technical problems but also brings expected commercial value to industrial transformation. Previously, aluminum manufacturers had high minimum order quantities for profile processing, especially for color customization, often requiring large-scale production to meet process requirements. This invention breaks this limitation, making small-batch, personalized customization a reality, particularly in applications where doors, walls, and cabinets are the same color, offering a significant market advantage. This flexibility not only reduces inventory and production risks for enterprises but also increases customer acceptance and satisfaction with customized products.

[0023] This invention fills a technological gap and overcomes existing technological biases at the industry level. For a long time, achieving color matching between aluminum profiles and wooden or glass doors has been a common problem in the industry. While traditional PVC film coating processes can provide a certain decorative effect, they suffer from problems such as peeling and fading. This invention, through a combination of digital color matching and optimized heat transfer technology, successfully breaks through the bottleneck of matching the color of aluminum profiles with wooden doors, eliminating the technological bias that "aluminum profiles cannot be the same color as wooden doors." This not only meets the needs of the trend of integrated home design but also opens up new development directions for aluminum profile surface decoration technology. Attached Figure Description

[0024] Figure 1 This is a flowchart of a method for customizing color patterns on aluminum profiles by heat transfer printing, provided in an embodiment of the present invention.

[0025] Figure 2 This is a color chart of a wooden door provided in an embodiment of the present invention.

[0026] Figure 3 This is the Earl Grey color pattern for wooden doors provided in this embodiment of the invention.

[0027] Figure 4 This is Figure 1 of the wooden door color panel provided in this embodiment of the invention.

[0028] Figure 5 This is Figure 2 of the wooden door color panel provided in this embodiment of the invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] In industrial applications, the core technical challenges faced by this invention lie in two aspects: color reproduction and the stability of the transfer process. Firstly, the color matching process is limited by the differences between the display terminal and the output medium. Specifically, the brightness, contrast, and saturation of the display screen deviate from the actual ink printing effect, making it difficult to achieve visual consistency when matching colors according to a color chart. Existing technologies often rely solely on manual comparison and experience-based correction, lacking a systematic parameter calibration mechanism, thus making it difficult to guarantee consistency during mass production.

[0031] To address this, this invention proposes a method of digitally acquiring color swatches using a high-definition scanner, obtaining near-realistic color data from the source. After the scanned image is imported into image processing software, it undergoes fixed parameter correction (reducing brightness, increasing contrast, and enhancing saturation) to form a standardized color benchmark. This operation not only effectively suppresses color shifts caused by monitor color differences but also provides greater stability in printer ink output. By printing small samples first and then gradually fine-tuning, a closed-loop color matching control process can be established, ensuring that the final printed color maintains a high degree of consistency with the color swatch.

[0032] In the transfer printing process, existing technologies commonly suffer from uneven temperature distribution within the furnace cavity. Insufficient heat convection or localized heat buildup leads to uneven, mottled transfer of pigments onto the substrate, particularly noticeable when simulating stone textures. This invention addresses this issue by incorporating two rotating blowers at the top of the transfer furnace, transforming the heat distribution within the furnace cavity from static conduction to dynamic circulation, significantly improving the uniformity of the temperature field. Furthermore, by employing a staged heating method—preheating at a lower temperature for an extended period before gradually increasing to the set temperature—thermal stress caused by sudden high temperatures between the substrate and the pigment layer is avoided, thereby enhancing the stability and color consistency of the finished product.

[0033] This thermal optimization scheme essentially improves the heat exchange efficiency within the furnace cavity through active intervention in fluid dynamics, resulting in a more balanced heat supply during the transfer process. Compared to traditional single constant-temperature heating, staged temperature control not only reduces color difference but also lowers the risk of pigment decomposition or substrate deformation. Therefore, the color stability and texture fineness of the finished product are significantly improved, making it particularly suitable for the decorative building materials industry, which demands high color fidelity.

[0034] This invention solves the long-standing problems of color consistency and transfer uniformity in industrial applications. The color matching process achieves standardization and repeatability of color control through digital sampling and parametric correction; the transfer process ensures process stability and reliability for large-scale production through thermal equalization and graded heating. This process logic is complete and interconnected, improving product appearance quality while significantly reducing rework rates and production losses.

[0035] The technological advancement of this invention lies in its systematic approach, encompassing both digital color management and dynamic thermal field control. Its working principle can be summarized as follows: parametric correction ensures accurate input color, while heat flow circulation stabilizes the output process. Through coordinated optimization at both ends, an overall balance between printing and transfer processes is achieved. This technological approach has broad application prospects in industries such as decorative building materials, home furnishings, and advertising printing, providing replicable standard processes for large-scale production.

[0036] like Figure 1As shown, this embodiment of the invention provides a method for customizing color patterns through thermal transfer printing on aluminum profiles. This technology includes:

[0037] S1's entire process is inspired by digital transfer technology for fabrics. Through digital pattern design and ink printing, it achieves customized patterned effects on the surface of aluminum profiles. The key point is that users can design patterns and colors themselves using PS software and then accurately reproduce them on the surface of aluminum profiles.

[0038] S2, in the initial stage of the process, users need to use image processing software such as Photoshop to complete the design of patterns, colors, and resolution. The designed file must meet high resolution and CMYK mode to ensure accurate color reproduction on the subsequent roll-to-roll ink printer;

[0039] S3. The designed pattern is printed onto special fabric transfer paper using an ink roll printer. This type of transfer paper differs from thermal sublimation transfer paper; its ink layer thickness, adhesion, and heat resistance are all adapted to ensure that the pigment can be fully released when the aluminum profile surface is heated subsequently.

[0040] S4. The prepared transfer paper needs to be wrapped in the conventional aluminum profile transfer method, that is, the paper surface is tightly attached to the profile surface, and vacuum or mechanical pressing is used to ensure no wrinkles or air bubbles, thereby ensuring the complete transfer of the pattern.

[0041] S5, the wrapped profile then enters a dedicated profile transfer oven;

[0042] S6 employs a "stepped heating" strategy, rather than a single constant temperature heating, to ensure sufficient transfer and penetration of ink onto the aluminum profile surface. This means that in the transfer oven, the temperature is gradually increased in multiple stages, allowing the ink layer to soften, release, and form a strong bond with the aluminum surface.

[0043] S7, the first stage of the stepped heating is usually kept at a low temperature for slow preheating, so that the ink molecules in the transfer paper are initially activated, while avoiding sudden temperature rise that could cause paper warping or ink blistering.

[0044] S8, in the subsequent mid-stage heating phase, the temperature gradually rises to the critical range for ink release, causing the ink to gradually transfer from the paper to the surface of the aluminum profile; the time and temperature slope controlled in this stage have a great impact on the clarity and color saturation of the pattern.

[0045] S9, during the final high-temperature holding stage, the furnace temperature is maintained close to the curing point, allowing the ink to undergo a strong thermosetting bond on the aluminum profile surface, forming a wear-resistant and fade-resistant colored decorative layer. This stage ensures that the pattern is not only completely transferred but also tightly bonded to the substrate;

[0046] After the entire stepped heating process is completed, the aluminum profile needs to be cooled and the paper is peeled off. After peeling off the transfer paper, the surface of the aluminum profile can present a complete, colorful and personalized pattern, realizing the full-process digitalization and customization from pattern design to surface transfer.

[0047] This invention also provides another method for controlling transfer color based on scan correction, comprising the following steps:

[0048] S1, Obtain the digital color image of the standard color chart: Use a high-definition scanner with a resolution of 600 dots per inch and a bit depth of 16 bits to perform a one-time tiled scan of the standard color chart, turn off noise reduction, sharpening, automatic exposure, automatic white balance and automatic color enhancement functions; perform gray balance correction with a neutral gray patch as a reference, generate an uncompressed image data file and save it in a lossless format;

[0049] S2, Perform parameter correction and establish color conversion relationship: Import the digitized color image into the image processing software, set the working color space to the RGB color gamut of the International Color Consortium, and call the input color description file that matches the scanning device to complete the conversion to the device-independent color space; on this basis, perform fixed parameter correction in sequence with brightness adjusted to -15, contrast adjusted to +30, and saturation adjusted to +20 to obtain the corrected image; establish a one-to-one mapping relationship between the chromaticity values ​​of the corrected image and the target chromaticity values ​​of the standard color card to generate a color lookup table for printing;

[0050] S3, Print Verification and Target Color Data Determination: With the printer driver's automatic color management and automatic contrast functions turned off, select the print-end color description file and rendering intent that match the media, and print a test sample containing at least 24 color blocks; using the color difference in the device-independent color space as the evaluation index, compare the color difference between the test sample and the standard color card, and verify and correct according to the single-parameter successive fine-tuning strategy until the preset color difference threshold condition is met, and output the target color dataset;

[0051] S4, applied to transfer printing: writes the target color dataset into the rendering module or the color lookup table at the printing end of the transfer printing process, so that the color appearance of the finished transfer image is consistent with the standard color card.

[0052] The successive fine-tuning in step S3 is performed in the order of independent adjustment of a single parameter and print verification to reduce the accumulation of color errors, specifically as follows:

[0053] A. Set the single parameter adjustment order to brightness, contrast, and saturation; adjust only one item at a time, leaving the other parameters unchanged; adjust brightness in increments of 5 units, contrast in increments of 5 units, and saturation in increments of 2 units.

[0054] B. After each adjustment, print a test sample and calculate the color difference evaluation index for at least 24 color blocks in the sample. The average color difference is no greater than 2 and the maximum color difference is no greater than 4 to pass the judgment. When the average color difference decreases by less than 0.5 after two consecutive adjustments, the parameter is judged to have reached the optimal stopping point and the parameter value is fixed. Then, the next parameter is adjusted independently.

[0055] C. When an adjustment causes an increase in the average or maximum color difference, revert to the previous parameter value and reduce the step size to continue adjusting until the condition is met. After the independent optimization of the three parameters is completed, the final parameter combination is written into the color lookup table of the printing end as the fixed parameters of the target color dataset.

[0056] Figure 2 Wooden door color swatches.

[0057] Figure 3 Earl Grey pattern for wooden door panels.

[0058] Figure 4 Wooden door color panel, image number 1.

[0059] Figure 5 Image 2, color swatch for wooden door.

[0060] Example 1: Wood Grain Effect Transfer Aluminum Profile

[0061] The high-resolution wood grain pattern designed in Photoshop is exported as a CMYK mode file and printed onto special transfer paper for fabric using an ink roll printer. The transfer paper is then tightly wrapped around the surface of an aluminum profile measuring 3m long and 10cm wide and placed in a transfer oven. The heating process consists of three stages: the first stage is preheating at 80℃ for 5 minutes; the second stage involves heating to 160℃ at a rate of 5℃ per minute and holding at that temperature for 15 minutes; the third stage involves heating to 200℃ and holding at that temperature for 20 minutes. After cooling and peeling off the paper, the profile surface achieves a realistic wood grain effect with stable color and wear resistance.

[0062] Example 2: Colored Geometric Pattern Aluminum Decorative Panel

[0063] Multi-color geometric patterns are drawn using Photoshop and printed onto transfer paper via ink rolls. The transfer paper is then wrapped around a 3mm thick aluminum decorative plate and placed in a transfer oven. A four-stage stepped heating process is employed: the first stage preheats to 70℃ for 8 minutes; the second stage increases the temperature at 10℃ per minute to 150℃ and holds for 10 minutes; the third stage increases the temperature to 180℃ and holds for 15 minutes; and the fourth stage increases the temperature to 210℃ and holds for 20 minutes. The final pattern is completely transferred with smooth edges, a strong bond between the pattern layer and the aluminum plate, and superior weather resistance compared to ordinary thermal sublimation processes.

[0064] Example 3: Imitation stone texture building profile

[0065] Create a marble-textured pattern in Photoshop and print it onto special transfer paper. Wrap the transfer paper around the aluminum alloy door and window profile and place it in a transfer oven under vacuum. The heating method uses a stepped + gradual increase: the first stage preheats to 60℃ for 10 minutes; the second stage slowly increases the temperature to 140℃ at a rate of 3℃ per minute and holds for 20 minutes; the third stage rapidly increases the temperature to 190℃ and holds for 25 minutes. After cooling, peel off the paper; the profile surface displays a natural stone texture, the patterned layer is smooth, and it has UV resistance.

[0066] Example 4: Customized Aluminum Crafts with Personalized Images

[0067] The user-uploaded photos are optimized using Photoshop and then printed onto high-density transfer paper. The transfer paper is cut to the same size as the aluminum photo frame and precisely wrapped around it. The heating process is divided into five stages: the first stage is preheating at 50℃ for 5 minutes; the second stage is raising the temperature to 100℃ and holding for 5 minutes; the third stage is raising the temperature to 150℃ and holding for 10 minutes; the fourth stage is raising the temperature to 190℃ and holding for 15 minutes; and the fifth stage is raising the temperature to 210℃ and holding for 20 minutes. After the transfer is completed, the image clarity reaches over 300dpi, with strong color gradation, meeting the needs of personalized craft customization.

[0068] Specific application areas or related products of this invention include customized metal surface patterns for home building materials, home appliances, metal sheets, and other related products.

[0069] Color matching in Photoshop involves adjusting colors according to a color swatch. However, differences in computer monitor display and printer ink color directly affect color matching. The solution is to use a high-definition scanner to scan the color swatch, transfer the scanned image to Photoshop, adjust the brightness to -15, contrast to +30, and saturation to +20. Print a small sample according to these settings for testing, and then fine-tune a few more times. If color differences occur during transfer printing, add two 1.5 kW rotating blowers to the top of the transfer oven to ensure a uniform temperature. Then, lower the oven temperature to 135 degrees Celsius and heat for 10 minutes, then increase the temperature to 145 degrees Celsius and heat for another 5 minutes.

[0070] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for controlling transfer color based on scan correction, characterized in that, Includes the following steps: S1, Obtain the digital color image of the standard color chart: Use a high-definition scanner with a resolution of 600 dots per inch and a bit depth of 16 bits to perform a one-time tiled scan of the standard color chart, turn off noise reduction, sharpening, automatic exposure, automatic white balance and automatic color enhancement functions; perform gray balance correction with a neutral gray patch as a reference, generate an uncompressed image data file and save it in a lossless format; S2, Perform parameter correction and establish color conversion relationship: Import the digitized color image into the image processing software, set the working color space to the RGB color gamut of the International Color Consortium, and call the input color description file that matches the scanning device to complete the conversion to the device-independent color space; on this basis, perform fixed parameter correction in sequence with brightness adjusted to -15, contrast adjusted to +30, and saturation adjusted to +20 to obtain the corrected image; establish a one-to-one mapping relationship between the chromaticity values ​​of the corrected image and the target chromaticity values ​​of the standard color card to generate a color lookup table for printing; S3, Print Verification and Target Color Data Determination: With the printer driver's automatic color management and automatic contrast functions turned off, select the print-end color description file and rendering intent that match the media, and print a test sample containing at least 24 color blocks; using the color difference in the device-independent color space as the evaluation index, compare the color difference between the test sample and the standard color card, and verify and correct according to the single-parameter successive fine-tuning strategy until the preset color difference threshold condition is met, and output the target color dataset; S4, applied to transfer printing: writes the target color dataset into the rendering module or the color lookup table at the printing end of the transfer printing process, so that the color appearance of the finished transfer image is consistent with the standard color card.

2. The method as described in claim 1, characterized in that, The successive fine-tuning in step S3 is performed in the order of independent adjustment of a single parameter and print verification to reduce the accumulation of color errors, specifically as follows: A. Set the single parameter adjustment order to brightness, contrast, and saturation; adjust only one item at a time, leaving the other parameters unchanged; adjust brightness in increments of 5 units, contrast in increments of 5 units, and saturation in increments of 2 units. B. After each adjustment, print a test sample and calculate the color difference evaluation index for at least 24 color blocks in the sample. The average color difference is no greater than 2 and the maximum color difference is no greater than 4 to pass the judgment. When the average color difference decreases by less than 0.5 after two consecutive adjustments, the parameter is judged to have reached the optimal stopping point and the parameter value is fixed. Then, the next parameter is adjusted independently. C. When an adjustment causes an increase in the average or maximum color difference, revert to the previous parameter value and reduce the step size to continue adjusting until the condition is met. After the independent optimization of the three parameters is completed, the final parameter combination is written into the color lookup table of the printing end as the fixed parameters of the target color dataset.

3. A method for temperature uniformity control in a transfer printing oven, characterized in that, Includes the following steps: S1, Two 1.5 kW rotary blowers are installed on the upper part of the transfer furnace; S2, turn on the rotary blower to form a circulating airflow, so that the furnace temperature is evenly distributed; S3, set the initial temperature of the transfer oven to 135℃ and heat for 10 minutes; S4. After preheating, raise the temperature to 145°C and continue heating for 5 minutes to achieve uniform color transfer.

4. The method according to claim 3, characterized in that, The rotary blowers are symmetrically positioned at the top of the furnace cavity to create a balanced convection circulation.

5. A transfer color control system, characterized in that, include: The scanning module is used to acquire digital images of the standard color chart; The correction module is used to adjust fixed parameters of a digitized image to generate standardized color data; The printing module is used to output test samples with standardized color data. The transfer module is used for transfer printing based on the standardized color data; The temperature control module is used to achieve uniform furnace cavity temperature through rotating blowers and staged temperature control.

6. The system according to claim 5, characterized in that, The temperature control module is equipped with a time-segmented temperature controller to control the 135°C preheating and 145°C heating stages respectively.

7. A transfer-printed product for decorative panels, characterized in that, The transfer article is prepared by any one of the methods or systems described in claims 1 to 6, wherein the color of the transfer article is consistent with the standard color card, and the color difference of the transfer layer is controlled within ΔE≤2.

8. The transfer-printed article according to claim 7, characterized in that, The color stability of the transfer layer remained consistent across five consecutive production batches.

9. The transfer-printed article according to claim 7, characterized in that, The surface texture of the transferred product is consistent with that of the simulated stone, and there are no obvious color difference spots under magnification of 10 times.

10. The system according to claim 5, characterized in that, A color feedback unit is provided between the correction module and the printing module, which is used to recalibrate the parameters based on the color difference detection results of the test sample.

Images