A moulding apparatus

Abstract

The application discloses a molding equipment for photoetching paper molding, which comprises a coating assembly for coating glue on the surface of photoetching paper, a plate roller assembly arranged at one end downstream of the coating assembly, and a control assembly. The plate roller assembly comprises a plate roller and a pressing roller, and the plate roller and the pressing roller are oppositely arranged to form a pressing area for pressing the photoetching paper coated with glue. The control assembly is electrically connected with the heating assembly, and is used for controlling the working state of the heating assembly and heating the plate roller, so that the photoetching paper is heated by the plate roller when passing through the pressing area, and the viscosity of the glue is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photolithography technology, and in particular to a molding device for photolithography paper molding. Background Technology

[0002] Photolithography paper is a functional thin film material with microstructured patterns on its surface, widely used in high-end packaging, anti-counterfeiting, display, and lighting fields. In the molding process of photolithography paper, UV adhesive (i.e., ultraviolet-curable adhesive) is typically applied to the surface of the photolithography paper, and then the pattern structure is transferred into the UV adhesive through mold pressing. Finally, it is cured under ultraviolet light to form a stable graphic layer.

[0003] Currently, the industry commonly uses cold-pressed printing plate molding. In this process, the UV adhesive has high viscosity at room temperature. To ensure that the adhesive can fully fill the microstructure areas of the photomask, a large amount of adhesive is often required (typically 8–9 g / m²). 2 To achieve a complete pattern transfer effect, the glue leveling time is insufficient under high-speed production conditions, resulting in incomplete pattern transfer and severely restricting the improvement of molding line speed. At the same time, it is also easy to produce defects such as uneven glue layer thickness, blurred pattern edges, and even black spots, affecting the appearance and performance of the finished product. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a molding equipment that reduces the viscosity of the adhesive by adjusting the temperature of the printing roller, thereby achieving high-speed, low-adhesion-volume, and high-quality molding of photoresist paper.

[0005] This utility model provides a molding device for molding photoresist paper, including a coating assembly for applying adhesive to the surface of the photoresist paper, a printing roller assembly disposed at one downstream end of the coating assembly, and a control assembly. The printing roller assembly includes a printing roller, a pressure roller, and a heating assembly. The printing roller and the pressure roller are arranged opposite to each other to form a pressing area for pressing the photoresist paper coated with adhesive. The control assembly is electrically connected to the heating assembly and is used to control the working state of the heating assembly and heat the printing roller, so that the photoresist paper is heated by the printing roller when passing through the pressing area to reduce the viscosity of the adhesive.

[0006] In one embodiment, the coating assembly includes at least one mesh-adjustable gluing screen for quantitatively transferring adhesive onto the surface of photoresist paper.

[0007] In one embodiment, a temperature control component is further included. The temperature control component includes a water tank storing temperature-controlled water and a water pipe. An adjustment cavity is provided inside the printing roller. The water pipe is connected to the adjustment cavity. The temperature control component is electrically connected to the control component and is used to transport the temperature-controlled water in the water tank to the adjustment cavity through the water pipe under the control of the control component, so as to maintain the printing roller within a preset constant temperature range.

[0008] In one embodiment, the control component includes a temperature setting module for setting the working temperature range of the printing roller. The temperature setting module is electrically connected to both the constant temperature component and the heating component, and is used to control the flow rate of the constant temperature water and the power of the heating component according to the set temperature range.

[0009] In one embodiment, the temperature of the printing roller is 50°C-65°C.

[0010] In one embodiment, the molding equipment further includes a conveying component for driving the photoresist paper sequentially through the coating component and the printing roller component along a predetermined path.

[0011] In one embodiment, the conveying assembly includes a conveyor belt mechanism and a tension adjustment mechanism for maintaining stable tension of the photoresist paper during the conveying process; the control assembly is electrically connected to the conveyor belt mechanism for coordinating and controlling the conveying speed of the photoresist paper to synchronize with the molding speed of the printing roller.

[0012] In one embodiment, the surface of the pressure roller is provided with an elastic covering layer to provide flexible support during the pressing process.

[0013] The present invention provides a molding device that, by setting a heating component in the printing roller assembly and adjusting its heating state by a control component, can actively heat the printing roller during the molding process, keeping its surface temperature within a set range. This reduces the viscosity of the adhesive coated on the surface of the photoresist paper, enhances its fluidity and leveling properties, and effectively solves the problems of large amount of adhesive, limited molding speed, poor pattern forming quality, and serious material waste in the prior art. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the working process of the molding equipment provided in the preferred embodiment of this utility model.

[0016] Figure 2 A schematic diagram of the structure of the constant temperature component and the printing roller component provided in the preferred embodiment of this utility model.

[0017] Figure label:

[0018] 10. Coating assembly; 20. Printing roller assembly; 21. Pressure roller; 22. Printing roller; 30. Conveying assembly; 40. Control assembly; 50. Temperature control assembly; 60. Temperature setting module; 41. Water tank; 42. Water pipe. Detailed Implementation

[0019] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar attributes, not to indicate or imply relative importance or a specific order.

[0023] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0024] Please refer to Figure 1-2This invention provides a molding device for photoresist paper molding, comprising a coating assembly 10, a printing roller assembly 20, and a control assembly 40. The coating assembly 10 uniformly coats the photoresist paper surface with adhesive (UV adhesive in this embodiment) to form an adhesive layer of predetermined thickness, providing a foundation for subsequent pattern molding. This assembly is typically used in conjunction with a screen or other quantitative coating structure to achieve high-precision, low-fluctuation adhesive application. The printing roller assembly 20 is located downstream of the coating assembly 10 and specifically includes a printing roller 22 and a pressure roller 21, which are arranged opposite each other, forming a pressing area. The coated photoresist paper enters this pressing area along a preset conveying path, contacts and presses against the photoresist pattern or embossed pattern on the surface of the printing roller 22, completing the pattern transfer.

[0025] To optimize molding quality and adapt to the requirements of high-speed, low-adhesion molding, a heating component is integrated into the printing roller assembly 20 to regulate the temperature of the printing roller 22. The heating component can be built into the printing roller 22 or arranged close to its outer surface. The heating medium can be an electric heating element, hot oil, or a constant-temperature water circulation system. By heating the printing roller 22 to a suitable surface temperature (e.g., 50℃–65℃), the viscosity of the adhesive can be significantly reduced, and its fluidity and leveling properties improved. This allows the adhesive to fully spread and fill the microstructure of the pattern in a short time, improving the integrity and edge clarity of the molded pattern. Furthermore, the control component 40 is electrically connected to the heating component and is used to control the working status of the heating component, including start-up, shutdown, temperature setting, and adjustment functions. During the process of the photoresist paper passing through the pressing area, the control component 40 can control the heating temperature of the printing roller 22 in real time according to the set process parameters, ensuring that the pressing process remains within a stable thermorheological control range.

[0026] Through the above structural design, this molding equipment can quickly complete pattern transfer after adhesive application and significantly improve the following technical problems: Firstly, thermodynamic regulation reduces adhesive viscosity, thereby reducing the amount of adhesive used per unit area and effectively controlling it at 4.5–6 g / m². 2 This reduces raw material consumption; on the other hand, the adhesive layer is easier to level, the pattern transfer is fuller and clearer, and the product yield is improved; in addition, due to the shortened leveling time, the molding line speed can be increased to more than 1.3 times that of the original process, which significantly enhances production efficiency.

[0027] In this embodiment, the coating assembly 10 includes at least one adhesive coating screen with an adjustable mesh count. The adhesive coating screen is used to quantitatively transfer UV adhesive onto the surface of the photoresist paper. Its mesh count determines the coating amount per unit area and is an important parameter for controlling the accuracy of the adhesive layer thickness.

[0028] Preferably, the coating screen is replaceable, allowing the operator to select screens with different mesh counts based on the required precision of the molded pattern, the target coating thickness, or the leveling requirements. For example, when forming ultra-thin patterns or high-resolution structures, a screen with a mesh count of 200–300 can be used to control the coating amount at 5 g / m². 2 The adjustable mesh size of the gluing screen allows for greater adaptability to different product requirements, while also enabling precise control over the amount of glue applied. This design helps improve the clarity of molded pattern edges and the uniformity of thickness, further optimizing the product's appearance and performance.

[0029] To further improve the accuracy and stability of temperature control of the printing roller 22, in this embodiment, the molding equipment also includes a temperature control component 50. The temperature control component 50 includes a water tank 41 and a set of water pipes 42. The water tank 41 stores temperature-controlled water to provide a stable heat exchange medium for the printing roller 22. An adjustment cavity is provided inside the printing roller 22 to form a heat conduction interface with the temperature-controlled water. One end of the water pipe 42 is connected to the water tank 41, and the other end is connected to the adjustment cavity inside the printing roller 22, thus constructing a closed-loop water circulation channel. The temperature control component 50 is electrically connected to the control component 40. When the system is running, the temperature-controlled water, under the control of the control component 40, is transported from the water tank 41 to the adjustment cavity through the water pipes 42, circulating around the inside of the printing roller 22 to achieve continuous and uniform heat exchange. The control component 40 can adjust the start / stop of the water pump and the temperature parameters of the temperature-controlled water in real time to ensure that the surface temperature of the printing roller 22 is maintained within a preset constant range (e.g., 50℃–65℃). This constant temperature structure effectively suppresses temperature drift caused by environmental fluctuations or heat dissipation from the adhesive, avoiding problems such as uneven adhesive layer and pattern transfer deviation caused by unstable temperature of the printing roller 22 during the molding process.

[0030] Preferably, the control component 40 includes a temperature setting module 60 for setting the operating temperature range of the printing roller 22. This temperature setting module 60 may include functional units such as a digital control panel, a processor, and a temperature sensor. The operator can set a target temperature value through the input interface, for example, setting the surface temperature of the printing roller 22 to 60°C, and the system will automatically maintain this temperature. The temperature setting module 60 is electrically connected to both the constant temperature component 50 and the heating component, and they work together: when the temperature of the printing roller 22 is detected to be lower than the set value, the control component 40 activates the heating component to increase the temperature of the printing roller 22; and when the temperature of the printing roller 22 exceeds the set upper limit, the system activates constant temperature water circulation, adjusting the flow rate or heat exchange time of the constant temperature water to absorb and cool the printing roller 22, thereby forming a closed-loop dynamic temperature control system.

[0031] Through this dual-channel temperature control mechanism, namely heating + constant temperature water cooling bidirectional regulation, it can not only quickly respond to the impact of external interference on temperature, but also maintain temperature stability throughout the entire molding process, ensuring that the UV adhesive viscosity fluctuates within a controllable range, thus effectively guaranteeing the consistency of the molded pattern, edge sharpness, and thickness uniformity.

[0032] In practical applications, to ensure stable and reliable molding effects, the operating temperature of the printing roller 22 is controlled within the range of 50°C to 65°C in this embodiment. This temperature range is preset by the temperature setting module 60 and adjusted by the control component 40. This set temperature range comprehensively considers the rheological properties of the UV adhesive and the thermal deformation threshold of the photoresist substrate: within this temperature range, the viscosity of the UV adhesive decreases significantly, exhibiting good fluidity and leveling properties, enabling it to quickly fill the microstructure in the photoresist, thereby achieving complete pattern transfer; at the same time, this temperature will not cause thermal shrinkage, warping, or deterioration of the mechanical properties of the photoresist, ensuring dimensional stability.

[0033] If the temperature of the printing roller 22 is below 50℃, the UV adhesive has high viscosity and poor flowability. It cannot fully spread and fill the microstructure of the pattern upon molding, easily leading to blurred pattern edges, incomplete transfer, or broken lines, affecting molding accuracy and appearance quality. If the temperature is above 65℃, although the adhesive viscosity can be further reduced, it easily leads to excessively rapid adhesive diffusion, unclear boundaries, and pattern "collapse." The adhesive layer thickness is difficult to control, affecting optical performance. Furthermore, the photolithography paper substrate is prone to thermal deformation, blistering, or interlayer delamination under high temperatures, which can severely damage the entire roll. Therefore, maintaining the temperature of the printing roller 22 stably between 50℃ and 65℃ is a key parameter setting to achieve a technical balance between molding pattern quality, adhesive layer stability, and material compatibility.

[0034] In this embodiment, the molding equipment also includes a conveying assembly 30. This conveying assembly 30 drives the photoresist paper along a predetermined path, sequentially passing through the coating assembly 10 and the printing roller assembly 20, completing the connection between the adhesive coating and molding processes. Specifically, the conveying assembly 30 includes a conveyor belt mechanism and a tension adjustment mechanism. The conveyor belt mechanism can be a synchronous belt, guide belt, or other industrial-grade continuous transmission device, responsible for pushing the photoresist paper laterally. The tension adjustment mechanism is used to apply tension adjustment to the conveyor belt, ensuring that the photoresist paper does not slip, wrinkle, or shift during high-speed operation, thereby guaranteeing the accuracy of the pattern pressing position.

[0035] To achieve precise synchronous control of the molding process, the conveying component 30 is electrically connected to the control component 40. The control component 40 can collect the rotational speed and conveying speed parameters of the printing roller 22 in real time and adjust them in conjunction with the set process cycle to ensure that the linear speed of the photoresist paper is consistent with that of the printing roller 22 when it enters the pressing area. On the one hand, this avoids pattern ghosting, stretching, or misalignment caused by speed mismatch; on the other hand, it can maintain the pattern position accuracy and adhesive layer uniformity even under high-speed operation, improving the pass rate and appearance consistency of the molded products.

[0036] Optionally, the surface of the pressure roller 21 is provided with an elastic coating layer. This coating layer can be made of silicone, polyurethane, or other industrial elastic materials. During the molding process, the elastic coating layer has flexible cushioning properties, which can compensate for local deformation according to the micro-undulations of the photoresist surface or the uneven structure of the photoresist pattern, thereby achieving automatic pressure uniform distribution. Specifically, the coating layer can adhere more tightly to the photoresist surface during the pressing process, allowing the UV adhesive to more fully fill the microstructure and significantly improve the clarity and integrity of the pattern edges; under conditions where the adhesive layer is thin or the molding speed is fast, the flexible coating layer can suppress local fluctuations in the adhesive layer caused by instantaneous impact, ensuring the thickness stability of the coated adhesive during the pressing process; compared with rigid roller surfaces, elastic materials have better adaptability to photoresist paper, effectively reducing the risk of physical damage such as indentations and scratches, and are particularly suitable for thinner or more flexible photoresist paper materials.

[0037] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A molding apparatus for molding photoresist paper, characterized in that, The system includes a coating assembly (10) for applying adhesive to the surface of photoresist paper, a printing roller assembly (20) disposed at one downstream end of the coating assembly (10), and a control assembly (40). The printing roller assembly (20) includes a printing roller (22), a pressure roller (21), and a heating assembly. The printing roller (22) and the pressure roller (21) are disposed opposite to each other to form a pressing area for pressing the photoresist paper coated with adhesive. The control assembly (40) is electrically connected to the heating assembly and is used to control the working state of the heating assembly and heat the printing roller (22), so that the photoresist paper is heated by the printing roller (22) when passing through the pressing area to reduce the viscosity of the adhesive.

2. The molding equipment as described in claim 1, characterized in that, The coating assembly (10) includes at least one gluing screen with an adjustable mesh size, which is used to quantitatively transfer adhesive onto the surface of photoresist paper.

3. The molding equipment as described in claim 1, characterized in that, It also includes a temperature control component (50), which includes a water tank (41) storing temperature-controlled water and a water pipe (42). The printing roller (22) has an adjustment cavity inside, and the water pipe (42) is connected to the adjustment cavity. The temperature control component (50) is electrically connected to the control component (40) and is used to transport the temperature-controlled water in the water tank (41) to the adjustment cavity through the water pipe (42) under the control of the control component (40), so that the printing roller (22) is maintained within a preset constant temperature range.

4. The molding equipment as described in claim 3, characterized in that, The control component (40) includes a temperature setting module (60) for setting the working temperature range of the printing roller (22). The temperature setting module (60) is electrically connected to the constant temperature component (50) and the heating component, and is used to control the flow rate of the constant temperature water and the power of the heating component according to the set temperature range.

5. The molding equipment according to any one of claims 1-4, characterized in that, The temperature of the printing roller (22) is 50℃-65℃.

6. The molding equipment as described in claim 1, characterized in that, The molding equipment also includes a conveying assembly (30) for driving the photoresist paper to pass sequentially along a set path through the coating assembly (10) and the printing roller assembly (20).

7. The molding equipment as described in claim 6, characterized in that, The conveying assembly (30) includes a conveyor belt mechanism and a tension adjustment mechanism to maintain the tension stability of the photoresist during the conveying process; the control assembly (40) is electrically connected to the conveyor belt mechanism to coordinate and control the conveying speed of the photoresist to be synchronized with the molding speed of the printing roller (22).

8. The molding equipment as described in claim 1, characterized in that, The surface of the pressure roller (21) is provided with an elastic covering layer to provide flexible support during the pressing process.

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