Processing method and structure of double-sided pet photoetching card

Abstract

The application relates to the technical field of card making. A processing method of a double-sided pet photoetching card comprises the following steps: processing PET into a PET film with a preset thickness; selecting paper or a roll material to form a paper base according to parameter requirements of a target card; performing color printing on one side of the paper base according to color requirements of the target card, and combining the paper base with a photoetching film to form a single-sided photoetching paper; combining the single-sided photoetching paper with the PET film to form a single-sided panel material; performing color printing on the other side of the single-sided panel material, combining the single-sided panel material with a photoetching film to form a double-sided photoetching paper; combining one side of the double-sided photoetching paper without the PET film with the PET film to form a double-sided panel material; and cutting the double-sided panel material according to size requirement parameters of the target card to obtain the target card. The method has the beneficial effects of high stiffness, hardness and bending resistance, a solid and thick hand feeling and difficulty in bending.

Description

Technical Field

[0001] This application relates to the field of card manufacturing technology, and more specifically, to a processing method and structure for a double-sided PET photolithography card. Background Technology

[0002] In the high-end card manufacturing sector, the demand for products that combine aesthetic value and durability continues to grow. Related technologies often combine composite substrates with precision machining processes to enhance the visual appeal and structural stability of the cards. Current mainstream high-end card production solutions typically employ a composite structure of "customized photolithography film + paper substrate." First, the photolithography film is bonded to a paper substrate such as coated paper or colored paper to form a basic card base. Then, an integrated molding process is used to obtain the complete card base. Subsequently, independent precision photolithography processing is performed on both sides of the card base. This step-by-step operation creates a unique symmetrical visual effect, while the synergistic properties of the composite substrate enhance the card's collectability and durability.

[0003] However, existing technologies suffer from a core technical problem: limited by the "integrated card base + step-by-step photolithography" processing path, current solutions require two independent photolithography processes on the formed card base. This not only involves cumbersome process connections but also necessitates repeated positioning and calibration of the card base before each photolithography step, demanding extremely high operational precision and making it highly susceptible to affecting product consistency due to positioning deviations. More importantly, this processing mode cannot adapt to high-speed, continuous roll-to-roll production processes, limiting it to single-sheet or low-speed batch processing. This results in extremely low output per unit time, making it difficult to meet the demands of large-scale market expansion. Furthermore, it significantly increases labor and time costs in the production process, becoming a key bottleneck restricting the industrial upgrading and market competitiveness of this type of high-end card. Summary of the Invention

[0004] The main purpose of this application is to provide a processing method and structure for a double-sided PET photolithography card to solve the problems of complex production process and low efficiency.

[0005] To achieve the above objectives, the first aspect of this application proposes a method for processing a double-sided PET photolithography card, comprising: PET is processed to a predetermined thickness to form a PET film; Based on the parameter requirements of the target card, select paper or roll material to form a paper base; According to the color requirements of the target card, color printing is performed on one side of the paper base and laminated with a photoresist film to form a single-sided photoresist paper; The single-sided photoresist paper is laminated with the PET film to form a single-sided sheet material; The other side of the single-sided sheet is colored printed and then laminated with a photoresist film to form a double-sided photoresist paper. The side of the double-sided photoresist paper that is not laminated with the PET film is laminated with the PET film to form a double-sided sheet material; Based on the size requirements of the target card, the double-sided sheet material is cut to obtain the target card.

[0006] In some feasible embodiments, the step of processing PET to a predetermined thickness to form a PET film includes: Transparent PET material is processed to a predetermined thickness to form a PET film that meets the predetermined flatness requirements.

[0007] In some feasible methods, the step of selecting paper or roll material to form a paper base according to the parameter requirements of the target card includes: Based on the parameter requirements of the target card, select the corresponding quantity, thickness, and stiffness of paper or rolls to form a paper base.

[0008] In some feasible methods, the step of color printing on one side of the paper base according to the color requirements of the target card and laminating it with a photoresist film to form a single-sided photoresist paper includes: According to the color requirements of the target card, color printing is performed on one side of the paper base to form the paper base with color printing; The colored side of the paper base with color printing is bonded to a photoresist film to form a single-sided photoresist paper.

[0009] In some feasible embodiments, the step of laminating the single-sided photoresist paper with the PET film to form a single-sided sheet includes: Obtain the marking points on the single-sided photoresist paper and the marking points on the PET film; The marking points on the single-sided photoresist paper and the marking points on the PET film are aligned, bonded together, and dried using a UV lamp to form a single-sided panel.

[0010] In some feasible methods, the step of color printing on the other side of the single-sided sheet and laminating it with a photoresist film to form a double-sided photoresist paper includes: According to the color requirements of the target card, color printing is performed on the other side of the single-sided sheet material to form the paper base with double-sided color printing; The other colored side of the paper base with double-sided color printing is bonded to a photoresist film to form double-sided photoresist paper.

[0011] In some feasible embodiments, the step of laminating the side of the double-sided photoresist paper that is not laminated with the PET film to the PET film to form a double-sided sheet includes: Obtain the marking points on the other side of the double-sided photoresist paper, and the marking points on the PET film; The marking points on the other side of the double-sided photoresist paper and the marking points on the PET film are aligned, bonded together, and dried using a UV lamp to form the double-sided photoresist paper.

[0012] In some feasible methods, the step of cutting the double-sided sheet material according to the size requirements of the target card to obtain the target card includes: The double-sided sheet material is placed in an environment with a set temperature and humidity, and left to stand for a preset time to obtain the double-sided sheet material with cured adhesive. Based on the size requirements of the target card, the double-sided sheet material that has been cured with adhesive is cut to obtain the target card.

[0013] In some feasible methods, after the step of cutting the double-sided sheet material according to the size requirements of the target card to obtain the target card, the method further includes: The target cards are inspected, defective target cards are removed, and the qualified target cards are packaged.

[0014] Secondly, this application provides a structure for a double-sided PET photolithography card, applied to the aforementioned processing method for a double-sided PET photolithography card, comprising: The paper base is coated with the color of the target card on both its top and bottom surfaces, forming a top color layer and a bottom color layer; Photolithography films are respectively disposed on the top color layer and the bottom color layer, and together with the paper base, form a double-sided photolithography paper; A PET film is disposed on the photoresist film and forms a double-sided sheet together with the double-sided photoresist paper; wherein... The double-sided sheet material is cut according to the size requirements of the target card to obtain the target card.

[0015] The technical solutions provided by the embodiments of this application may include the following beneficial effects: This application discloses a method for processing a double-sided PET photolithography card. The method involves processing PET to a preset thickness to form a PET film; selecting paper or roll material according to the target card's parameters to form a paper base; color printing on one side of the paper base according to the target card's color requirements, and then laminating it with the photolithography film to form a single-sided photolithography paper; laminating the single-sided photolithography paper with the PET film to form a single-sided sheet; color printing on the other side of the single-sided sheet, and then laminating it with the photolithography film to form a double-sided photolithography paper; laminating the side of the double-sided photolithography paper not laminated with the PET film with the PET film to form a double-sided sheet; and cutting the double-sided sheet according to the target card's size requirements to obtain the target card. This method achieves high stiffness, hardness, and bending resistance, resulting in a solid, heavy feel and resistance to bending. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 A flowchart illustrating a method for fabricating a double-sided PET photolithography card provided in this application; Figure 2 This is a schematic diagram of the structure of a double-sided PET photolithography card provided in this application.

[0017] Figure label: 1. Paper base; 2. Color layer; 3. Photolithography film; 4. PET film; Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linked," and "socketing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] PET, or polyethylene terephthalate, is a synthetic resin material belonging to the thermoplastic polyester class of synthetic materials.

[0024] like Figure 1 As shown, in a first aspect, this application provides a method for processing a double-sided PET photolithography card, comprising: S100 processes PET to a preset thickness to form a PET film.

[0025] In this process, transparent PET resin is processed to a preset thickness and meets preset flatness requirements to form a PET film, which serves as the photolithography support substrate for double-sided PET photolithography cards.

[0026] Specifically, forming a PET film may include the following steps: S101 utilizes transparent PET material, processes it to a preset thickness, and forms a PET film that meets the preset flatness requirements.

[0027] Specifically, highly transparent PET resin particles (polyethylene terephthalate resin) are selected as raw materials. The light transmittance of the raw materials is required to be ≥90% (confirmed by visible light transmittance test, the test conditions are visible light with a wavelength of 550nm incident perpendicularly), and there are no visible impurities, bubbles or particle agglomerates to avoid affecting the clarity of the subsequent photolithography effect.

[0028] The screened PET resin granules are dried as follows: The PET resin granules are placed in a closed dryer, and the drying temperature is controlled at 160℃-180℃, preferably 170℃, for 4h-6h, preferably 5h, to remove adsorbed moisture from the raw material (moisture content must be controlled below 50ppm). Principle: If the PET resin granules contain moisture, bubbles will form during subsequent melt processing due to moisture vaporization, leading to defects such as pinholes and depressions on the PET film surface, affecting flatness and light transmittance. Drying treatment can avoid this problem.

[0029] The dried PET resin granules are fed into the hopper of an extruder, where they undergo a gradient heating process in the extruder's heating section. The heating temperatures from the hopper to the die are sequentially set to 250℃-260℃ (feeding section), 270℃-280℃ (melting section), and 265℃-275℃ (homogenization section). Preferably, the feeding section is 250℃, the melting section is 270℃, and the homogenization section is 265℃. This ensures the PET resin is completely melted into a continuous flow, without clumping or localized overheating and degradation.

[0030] The molten PET is extruded through the die at the front of the extruder. The die outlet gap is pre-adjusted to an initial value related to the preset thickness (0.8mm-1.2mm for subsequent stretching processes). After extrusion, the melt is evenly spread on the surface of the cooling rollers, forming a preliminary PET film preform. Principle: Gradient heating avoids local overheating and decomposition of the PET resin, ensuring uniform melt flowability; the slit structure of the die allows the melt to flow out in a wide and uniform manner; the cooling rollers (temperature controlled at 25℃-35℃, preferably 25℃) rapidly cool the melt, allowing the film preform to solidify and preliminarily guarantee the basic shape of the film.

[0031] The cooled and shaped PET film preform is longitudinally stretched, with the stretching ratio controlled at 3.0-3.5 times, preferably 3.0 times. The stretching temperature is set at 85℃-95℃, preferably 85℃ (this temperature is near the glass transition temperature of PET, at which point the PET film preform has good ductility and is not easily broken). Longitudinal stretching can improve the longitudinal mechanical strength of the PET film and further refine the film thickness.

[0032] After longitudinal stretching, the PET film preform is fed into a transverse stretching machine (tenting machine) for transverse stretching: the tenter machine clamps the two edges of the PET film preform and stretches it 2.5-3.0 times in the width direction, preferably 2.5 times, at a temperature of 100℃-110℃, preferably 100℃. Principle: Biaxial stretching allows the molecular chains inside the PET film to arrange themselves in an orderly manner along the stretching direction. This not only improves the overall mechanical properties of the film (such as tensile strength and stiffness) but also ensures the film's thickness uniformity (thickness deviation controlled within ±0.005mm) and surface smoothness through the molecular chain orientation during the stretching process.

[0033] A non-contact thickness gauge (based on the principle of laser reflection) is used to continuously measure the thickness of the biaxially stretched PET film online. Measurement points are evenly distributed along the width of the film (one measurement point every 10 mm), and the actual thickness value of each measurement point is obtained in real time to maintain the thickness at 18.8 mils (0.188 mm), with an allowable deviation of ±0.005 mm. Next, the PET film is heat-set in an oven at 180℃-200℃, preferably 200℃, for 30s-60s, preferably 50s. Air cooling is then performed to fix the molecular chain structure and maintain the shaped film.

[0034] Using the above method, a PET film is produced. This PET film must meet the core requirements of precision photolithography for the substrate: "high transparency, high flatness, and uniform thickness," thus providing a foundation for the subsequent photolithography effect.

[0035] S200: Based on the parameter requirements of the target card, select paper or roll material to form a paper base.

[0036] Specifically, forming the paper base may include the following steps: S201. Based on the parameter requirements of the target card, select the corresponding quantity, thickness, and stiffness of paper or roll material to form a paper base.

[0037] Specifically, select paper or rolls with a basis weight of 80-120 g / m², a thickness of 0.1-0.15 mm, and meeting stiffness standards. Pre-treat these materials by drying, dust removal, and edge trimming to ensure a smooth surface and stable condition. Perform four-color printing on one side of the paper base using suitable inks, followed by drying / curing to ensure clear patterns and strong ink adhesion. Once qualified, the paper is ready for use.

[0038] S300, according to the color requirements of the target card, color printing is performed on one side of the paper base, and then laminated with a photoresist film to form a single-sided photoresist paper.

[0039] The purpose of step S300 is to first perform color printing on the paper base, and then precisely composite it with the independent functional film material photolithography film to finally obtain a single-sided photolithography paper that combines color and photolithographic visual effects.

[0040] Specifically, forming a single-sided photoresist paper may include the following steps: S301, according to the color requirements of the target card, color printing is performed on one side of the paper base to form the paper base with color printing.

[0041] Specifically, based on the color requirements of the target card, printing equipment is used to perform color printing on one side of the paper base, thereby obtaining a paper base with color printing.

[0042] After printing, the ink is cured using drying equipment such as infrared drying or hot air drying.

[0043] S302, the colored side of the paper base with color printing is bonded and laminated with a photoresist film to form a single-sided photoresist paper.

[0044] Specifically, a photolithography film is an independent functional film material whose surface has been pre-fabricated with precise microstructure photolithographic patterns (such as diffraction patterns), which can produce optical effects such as metallic luster and dynamic changes. Its substrate can be transparent polymer materials such as PET and PP.

[0045] The adhesive used for bonding and lamination can be a high-transparency, high-strength UV-curable glue. This glue must have good adhesion to both the photoresist film surface and the paper base, and after curing, it must be flexible and not brittle to ensure the card is resistant to bending.

[0046] After lamination and curing, a three-layer composite structure of "photolithography film / adhesive layer / paper base" is formed, called "single-sided photolithography paper". One side of this intermediate product shows the dazzling effect of the photolithography film, while the other side is the original state of the paper base, which is ready for the final lamination with the upper and lower PET photolithography films in the next step.

[0047] S400, the single-sided photoresist paper is laminated with the PET film to form a single-sided sheet material.

[0048] Specifically, forming a single-sided sheet material may include the following steps: S401, Obtain the marking points of the single-sided photoresist paper and the marking points of the PET film.

[0049] Specifically, using a visual recognition device, the coordinates of the four corners of the single-sided photoresist are marked, and the coordinates of the four corners of the PET film are also marked in the same way. In this way, the coordinates of the four corners of the single-sided photoresist and the four corner coordinates of the PET film are formed.

[0050] S402, the marking points of the single-sided photoresist paper and the marking points of the PET film are aligned, bonded together, and dried using a UV lamp to form a single-sided panel.

[0051] Specifically, the four corner coordinates of the single-sided photoresist paper are used as marker points. Similarly, the four corner coordinates of the PET film are used as marker points for the PET film. Next, one corner of the single-sided photoresist paper is used as a reference point, and the coordinates of one corner of the PET film are aligned with the reference point. Then, the straight line formed by the coordinates of two adjacent corners of the single-sided photoresist paper is aligned with the edge line of the PET film, thus completing the vertical alignment of the single-sided photoresist paper and the PET film. Next, adhesive is used for bonding. After bonding, it is dried using a UV lamp. The drying time can be set as needed to obtain a single-sided panel.

[0052] S500, the other side of the single-sided sheet is colored printed and laminated with a photoresist film to form a double-sided photoresist paper.

[0053] Specifically, forming double-sided photoresist may include the following steps: S501, according to the color requirements of the target card, color printing is performed on the other side of the single-sided sheet material to form the paper base with double-sided color printing.

[0054] S502, the other colored side of the paper base with double-sided color printing is bonded and laminated with a photoresist film to form double-sided photoresist paper.

[0055] Specifically, step S500 involves color printing and photolithography lamination on the other side of the single-sided substrate, which can be referred to as step S300 above and will not be repeated here.

[0056] S600, the side of the double-sided photoresist paper that is not laminated with the PET film is laminated with the PET film to form a double-sided sheet material.

[0057] Specifically, forming a double-sided sheet material may include the following steps: S601, Obtain the marking points on the other side of the double-sided photoresist paper and the marking points on the PET film.

[0058] S602, the marking points on the other side of the double-sided photoresist paper and the marking points on the PET film are aligned, bonded and laminated, and dried using a UV lamp to form double-sided photoresist paper.

[0059] Specifically, the content described in step S600 can be found in the relevant description of step S400, and will not be repeated here.

[0060] S700, according to the size requirements of the target card, the double-sided sheet material is cut to obtain the target card.

[0061] Specifically, obtaining the target card may include the following steps: S701, The double-sided sheet material is placed in an environment with a set temperature and humidity, and left to stand for a preset time to obtain the double-sided sheet material with cured adhesive.

[0062] Specifically, step S701 is curing or hardening, which is a process to ensure strong bonding between card layers, release internal stress, and prevent deformation later.

[0063] Although UV irradiation has initially cured the adhesive (surface dry) in the previous lamination process, the chemical reaction within the adhesive is not yet complete. By allowing it to stand under certain temperature and humidity conditions, the adhesive molecules can fully cross-link, achieving the final cured strength, and promoting the equilibrium of internal stresses in each layer of the composite material caused by temperature and humidity changes.

[0064] S702, according to the size requirements of the target card, the double-sided sheet material cured with glue is cut to obtain the target card.

[0065] Specifically, by using stamping and cutting equipment, the matured large sheet material is processed into multiple cards with specific shapes and sizes in one go.

[0066] Following the S700 steps, the following may also be included: S800: Inspect the target cards, remove defective target cards, and package the qualified target cards.

[0067] Specifically, the inspection of target cards can be carried out manually to remove flawed cards. Alternatively, visual algorithms can be used for inspection, which may include the following steps: Using an industrial camera, the front of the target card is photographed, and the image is adjusted 180° circumferentially around the target card as the axis at preset steps (e.g., 0.5°). A comprehensive score is obtained for each step. The comprehensive score is calculated as follows: Comprehensive Score = Overlap Coordination × 50% + Color Gamut Overlap Area Ratio × 30% + (Brightness Gradient Peak / Preset Threshold) × 20%. The overlap coordination refers to the pixel-level matching degree between the photolithographic reflected light area extracted from the card image and the paper-based printed color area at a specific viewing angle. The color gamut overlap area ratio refers to the percentage of overlap in a specific color space (e.g., CIE). Lab is a color space designed to be approximately uniform, with the core goal of ensuring that the numerical change in color matches the change in color perceived by the human eye. In Lab, the ratio of the area of ​​intersection between the color gamut presented by the photolithographic reflection effect and the standard color gamut of paper-based printing to the area of ​​the standard color gamut is essentially the calculation of the Jaccard similarity coefficient (a measure of the similarity between two sets) of the two color gamut ranges; the peak value of the brightness gradient represents the maximum drastic change in image brightness within the overlapping area of ​​the photolithographic effect and the printed pattern.

[0068] The angle with the highest overall score is selected as the best shooting angle; The target card is photographed at the optimal shooting angle to obtain an inspection image. The target card can be fixed by negative pressure adsorption, that is, the target card is placed on a negative pressure adsorption device and fixed by negative pressure.

[0069] By using the target card edge extraction and geometric calculation algorithm of the detected image, the length and width of the target card are measured. If the tolerance of the target card with the preset standard size is less than or equal to the preset size value, the target card is determined to be a qualified card; otherwise, the target card is rejected.

[0070] When the target card meets the standard size, feature extraction is performed on the inspection image to obtain the color gamut distribution, brightness gradient, and texture synergy feature parameters of the overlapping and synergistic region of the photolithography film and the target card. This generates an inspection image feature vector. The inspection image feature vector is then compared with a preset standard feature library of target visual effects (established by collecting multiple (e.g., 100) known qualified card samples, taking images at the optimal shooting angle, extracting the feature vector (such as color gamut distribution, brightness gradient, etc.) of each sample, and then calculating the average value or allowable range of these feature vectors). The overlap synergy is calculated. If the overlap synergy is ≥90%, the target card is deemed to have passed the overlap matching test; if it is <90%, the overlap matching is deemed unqualified (i.e., the photolithography film reflection effect and the card color do not effectively overlap), and the target card is discarded.

[0071] If the target card overlaps and matches successfully, the CIE Lab values ​​of the sampling points in the effective area of ​​the target card are extracted using a color gamut analysis method and compared with the standard color parameters. If the deviation is greater than or equal to the set deviation threshold, the target card is considered defective; otherwise, the target card is deemed to have a qualified color gamut.

[0072] By using the above method, the target cards are matched sequentially by size, overlap, and color. This coarse-to-fine matching method can improve the inspection efficiency of the target cards.

[0073] The above only examines one side of the target card. If the other side of the target card needs to be examined, the target card should be flipped over (the method of flipping is not limited in this application; it can be flipped by a robotic arm or manually), and then the aforementioned size, overlap, and color comparison steps should be repeated.

[0074] In one embodiment, target cards can be inspected. If 10,000 or tens of thousands of cards need to be inspected, the workload is enormous. Therefore, multiple target cards can be placed simultaneously on a negative pressure adsorption device. The movement path of the industrial camera is planned so that the camera moves along the path while maintaining a constant shooting angle, thereby photographing and inspecting multiple target cards.

[0075] It should be noted that the threshold and other parameters mentioned in this application can be adjusted according to the actual situation, and this application does not limit the range of the threshold.

[0076] like Figure 2 As shown, in a second aspect, this application provides a structure for a double-sided PET photolithography card, applied to the aforementioned processing method for a double-sided PET photolithography card, comprising: Paper base 1, the top and bottom surfaces of which are coated with the color of the target card to form color layer 2, the color layer 2 including a top color layer and a bottom color layer; Photolithography film 3 is respectively disposed on the top color layer and the bottom color layer, and together with the paper base 1, forms a double-sided photolithography paper; PET film 4 is disposed on the photoresist film 3, and together with the double-sided photoresist paper, forms a double-sided sheet material; wherein, The double-sided sheet material is cut according to the size requirements of the target card to obtain the target card.

[0077] It should be noted that the double-sided PET photolithography card structure of this application adopts a seven-layer symmetrical composite structure of "PET film 4 - photolithography film 3 - color layer 2 - paper base 1 - color layer 2 - photolithography film 3 - PET film 4". Specific processing methods can be found in the description of a processing method for a double-sided PET photolithography card, and will not be repeated here.

[0078] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0079] Obviously, those skilled in the art should understand that the various units or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device, or fabricating them separately as individual integrated circuit modules, or fabricating multiple modules or steps into a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for processing a double-sided PET photolithography card, characterized in that, include: PET is processed to a predetermined thickness to form a PET film; Based on the parameter requirements of the target card, select paper or roll material to form a paper base; According to the color requirements of the target card, color printing is performed on one side of the paper base and laminated with a photoresist film to form a single-sided photoresist paper; The single-sided photoresist paper is laminated with the PET film to form a single-sided sheet material; The other side of the single-sided sheet is colored printed and then laminated with a photoresist film to form a double-sided photoresist paper. The side of the double-sided photoresist paper that is not laminated with the PET film is laminated with the PET film to form a double-sided sheet material; Based on the size requirements of the target card, the double-sided sheet material is cut to obtain the target card.

2. The processing method for a double-sided PET photolithography card as described in claim 1, characterized in that, The step of processing PET to a preset thickness to form a PET film includes: Transparent PET material is processed to a predetermined thickness to form a PET film that meets the predetermined flatness requirements.

3. The processing method for a double-sided PET photolithography card as described in claim 1, characterized in that, The step of selecting paper or roll material to form a paper base according to the parameter requirements of the target card includes: Based on the parameter requirements of the target card, select the corresponding quantity, thickness, and stiffness of paper or rolls to form a paper base.

4. The processing method of the double-sided PET photolithography card as described in claim 1, characterized in that, The step of color printing on one side of the paper base according to the color requirements of the target card and laminating it with a photoresist film to form a single-sided photoresist paper includes: According to the color requirements of the target card, color printing is performed on one side of the paper base to form the paper base with color printing; The colored side of the paper base with color printing is bonded to a photoresist film to form a single-sided photoresist paper.

5. The processing method of the double-sided PET photolithography card as described in claim 1, characterized in that, The step of laminating the single-sided photoresist paper with the PET film to form a single-sided sheet includes: Obtain the marking points on the single-sided photoresist paper and the marking points on the PET film; The marking points on the single-sided photoresist paper and the marking points on the PET film are aligned, bonded together, and dried using a UV lamp to form a single-sided panel.

6. The processing method of the double-sided PET photolithography card as described in claim 1, characterized in that, The step of color printing on the other side of the single-sided sheet material and laminating it with a photoresist film to form a double-sided photoresist paper includes: According to the color requirements of the target card, color printing is performed on the other side of the single-sided sheet material to form the paper base with double-sided color printing; The other colored side of the paper base with double-sided color printing is bonded to a photoresist film to form double-sided photoresist paper.

7. The processing method of the double-sided PET photolithography card as described in claim 1, characterized in that, The step of laminating the side of the double-sided photoresist paper that is not laminated with the PET film to the PET film to form a double-sided sheet includes: Obtain the marking points on the other side of the double-sided photoresist paper, and the marking points on the PET film; The marking points on the other side of the double-sided photoresist paper and the marking points on the PET film are aligned, bonded together, and dried using a UV lamp to form the double-sided photoresist paper.

8. The processing method of the double-sided PET photolithography card as described in claim 1, characterized in that, The step of cutting the double-sided sheet material according to the size requirements of the target card to obtain the target card includes: The double-sided sheet material is placed in an environment with a set temperature and humidity, and left to stand for a preset time to obtain the double-sided sheet material with cured adhesive. Based on the size requirements of the target card, the double-sided sheet material that has been cured with adhesive is cut to obtain the target card.

9. The processing method of the double-sided PET photolithography card as described in claim 1, characterized in that, After the step of cutting the double-sided sheet material according to the size requirements of the target card to obtain the target card, the method further includes: The target cards are inspected, defective target cards are removed, and the qualified target cards are packaged.

10. A structure of a double-sided PET photolithography card, characterized in that, A processing method for the double-sided PET photolithography card according to any one of claims 1-9, comprising: The paper base is coated with the color of the target card on both its top and bottom surfaces, forming a top color layer and a bottom color layer; Photolithography films are respectively disposed on the top color layer and the bottom color layer, and together with the paper base, form a double-sided photolithography paper; A PET film is disposed on the photoresist film and forms a double-sided sheet together with the double-sided photoresist paper; wherein... The double-sided sheet material is cut according to the size requirements of the target card to obtain the target card.

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