Film coating apparatus and film coating system

Abstract

This invention relates to the field of coating technology, specifically disclosing a coating apparatus and a coating system. The coating apparatus includes: a feeding module with a receiving groove having a through hole, and a cooling channel connected to the receiving groove for heat exchange; a clamping module, movable and height-adjustable above the feeding module, comprising a base and a clamping frame for clamping film material, capable of clamping and moving the film material onto the receiving groove; an adsorption module with a suction port communicating with the through hole for adsorbing the film material onto the pulp product; and a hot-pressing module, movable and height-adjustable above the clamping module, having a heatable hot-pressing frame for pressing the film material onto the pulp product. The coating apparatus of this application can stabilize the temperature of the pulp product and the film material separately, improving the bonding strength between the film material and the pulp product while preventing the film material from melting, thereby improving the yield of coated products.

Description

Technical Field

[0001] This application relates to the field of coating technology, and in particular to a coating device and coating system. Background Technology

[0002] To reduce the environmental pollution caused by plastic packaging boxes, existing technologies have begun to use pulp raw materials to form pulp products through molding, for use in mobile phone packaging boxes or disposable lunch boxes, etc. However, pulp products have the characteristics of absorbing water and oil, and in some cases they cannot be used directly. Instead, a thermal lamination process is needed to coat certain surfaces of the pulp products, so that the coated areas have waterproof and oil-proof properties.

[0003] However, the heating temperature of pulp products and film materials is uncontrollable. If the temperature is too high, the film material will melt, and if the temperature is too low, the bond between the pulp products and film materials will be weak. Summary of the Invention

[0004] The purpose of this invention is to provide a coating device and coating system that can solve the problem of uncontrollable temperature during the coating of pulp products in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a coating device is provided, comprising:

[0007] The feeding module has a receiving tank for placing pulp products, the receiving tank having a through hole, and a cooling channel provided in the feeding module, the cooling channel being heat-exchange connected to the receiving tank;

[0008] A clamping module is vertically and movable above the feeding module. The clamping module includes a base and a clamping frame. The base and the clamping frame can be vertically and movable relative to the feeding module. The base and the clamping frame are used to clamp the film material. The clamping module can clamp and move the film material onto the receiving groove.

[0009] An adsorption module has a suction port that is connected to the through hole, so that the membrane material is adsorbed onto the pulp product on the receiving tank.

[0010] A hot pressing module is movable and height-adjustable above the clamping module. The hot pressing module has a heatable hot pressing frame. The shape of the hot pressing frame corresponds to the edge shape of the receiving groove, so that the film material is pressed by the hot pressing frame and attached to the pulp product.

[0011] As a preferred embodiment of the coating device, the base and / or the clamping frame are provided with a refrigerant channel.

[0012] As a preferred embodiment of the coating device, the number of cooling channels is at least two, and the cooling channels are disposed on the side of the receiving groove.

[0013] As a preferred embodiment of the coating apparatus, the cooling channels are staggered and surround the receiving groove.

[0014] As a preferred embodiment of the coating device, it also includes:

[0015] A preheating module is disposed on one side of the feeding module. The preheating module has a heating tank that can accommodate and heat the pulp product.

[0016] A transfer module is movably disposed between the feeding module and the preheating module, and the transfer module is used to transfer the pulp products in the heating tank to the receiving tank.

[0017] As a preferred embodiment of the coating device, the preheating module includes a feeding mechanism and a heating chamber and a transfer chamber that are connected. The feeding mechanism is movably disposed in the heating chamber and the transfer chamber. The heating tank is disposed on the feeding mechanism. The heating chamber is used to heat the heating tank. The transfer chamber is disposed on one side of the discharging module.

[0018] As a preferred embodiment of the coating apparatus, the transfer module includes a transfer track and a transfer mechanism, the transfer mechanism being movable along the transfer track and having suction cups for absorbing pulp products.

[0019] As a preferred embodiment of the coating device, it also includes:

[0020] The guide rail is fixedly connected to the feeding module;

[0021] The material transfer mechanism is movably mounted on the guide rail and has grippers for gripping pulp products and film materials.

[0022] As a preferred embodiment of the coating apparatus, the transfer mechanism also has a suction nozzle for drawing up pulp products.

[0023] Secondly, a laminating system is provided, including an edge-cutting device and the laminating device, wherein the edge-cutting device is disposed on one side of the feeding module of the laminating device to cut the edges of the laminated pulp product.

[0024] The beneficial effects of this application are as follows:

[0025] The pulp product is placed in the receiving tank of the feeding module. A liftable and movable clamping module is installed above the feeding module. The clamping module's base and clamping frame are used to hold and move the film material, allowing it to cover the pulp product in the receiving tank. Because the receiving tank has through holes that connect to the suction port of the adsorption module, a negative pressure environment is created in the receiving tank when the adsorption module performs negative pressure adsorption. The pulp product itself also has micropores between its fibers, allowing it to breathe, which enables the film material to be adsorbed onto the pulp product.

[0026] In addition, a liftable and movable hot-pressing module is also provided above the clamping module. The film material is pressed by a heated hot-pressing frame in the hot-pressing module. Since the shape of the hot-pressing frame corresponds to the edge shape of the receiving groove, the film material can be further adhered to the pulp product when pressed by the hot-pressing frame, thus completing the lamination and forming a laminated product. The laminated product can be removed from the receiving groove, and a new pulp product can be placed in the receiving groove and the clamping module can clamp the new film material for the next lamination process.

[0027] Meanwhile, the feeding module is also equipped with a cooling channel, which is connected to the receiving tank for heat exchange. A heat exchange liquid can be circulated through the cooling channel to cool the receiving tank, preventing the film material from melting due to overheating in repeatedly used tanks. By maintaining the heating of the hot-pressing module and timely cooling of the feeding module, the temperatures of the pulp products and the film material can be stabilized. This maintains the hot-pressing temperature of the film material and prevents the receiving tank from overheating and melting the film material, improving the bonding strength between the film material and the pulp products in the laminated products, ensuring the integrity of the laminated film, and thus increasing the yield of laminated products. Attached Figure Description

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of a coating device provided in an embodiment of this application.

[0030] Figure 2 This is an exploded structural diagram of the feeding module and the adsorption module provided in an embodiment of this application.

[0031] Figure 3 This is a partial structural diagram of a feeding module provided in another embodiment of this application.

[0032] Figure 4 This is a partial structural diagram of a hot-pressing module provided in an embodiment of this application.

[0033] Figure 5 This is a partial structural schematic diagram of a coating device provided in an embodiment of this application.

[0034] Figure 6A partial structural cross-sectional view of the preheating module and the transfer module provided in an embodiment of this application.

[0035] Figure 7 This is a partial structural cross-sectional view of a coating device provided in an embodiment of this application.

[0036] Figure 8 This is a schematic diagram of the installation structure of a coating system provided in an embodiment of this application.

[0037] Figure 9 This is a schematic diagram illustrating the heat exchange principle between the feeding module and the preheating module provided in one embodiment of this application.

[0038] Figure 10 This is a schematic diagram of a heat pump system provided in an embodiment of this application.

[0039] In the picture:

[0040] 1. Feeding module; 11. Receiving groove; 12. Through hole; 13. Cooling channel;

[0041] 2. Clamping module; 21. Base; 22. Clamping frame; 23. Refrigerant channel;

[0042] 3. Adsorption module; 31. Suction port; 4. Hot pressing module; 41. Hot pressing frame; 42. Heat exchange tube;

[0043] 5. Preheating module; 51. Heating tank; 52. Feeding mechanism; 53. Heating chamber; 54. Transfer chamber; 55. Liquid flow channel;

[0044] 6. Transfer module; 61. Transfer track; 62. Transfer mechanism; 63. Suction cup;

[0045] 7. Guide rail; 8. Material transfer mechanism; 81. Gripper; 82. Suction nozzle; 91. Compressor; 92. Throttling valve; 101. Edge trimming device. Detailed Implementation

[0046] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] Currently, a thermal lamination process is used to coat certain surfaces of pulp products, giving the coated areas waterproof and oil-proof properties, creating laminated products suitable for use in mobile phone packaging boxes or disposable lunch boxes. However, the heating temperature between the pulp product and the film material is uncontrollable. If the temperature is too high, the film material will melt; if the temperature is too low, the bond between the pulp product and the film material will be weak.

[0050] To address the problem of uncontrollable temperature during the lamination of pulp products in existing technologies, such as... Figure 1 As shown, this embodiment provides a coating device, including:

[0051] The feeding module 1 has a receiving tank 11 for placing pulp products. The receiving tank 11 has a through hole 12. The feeding module 1 is provided with a cooling channel 13, which is connected to the receiving tank 11 for heat exchange.

[0052] The clamping module 2 is movable and height-adjustable above the feeding module 1. The clamping module 2 includes a base 21 and a clamping frame 22. The base 21 and the clamping frame 22 can be moved up and down relative to the feeding module 1 respectively. The base 21 and the clamping frame 22 are used to clamp the film material. The clamping module 2 can clamp and move the film material onto the receiving groove 11.

[0053] The adsorption module 3 has a suction port 31, which is connected to the through hole 12 so that the film material is adsorbed onto the pulp product on the receiving tank 11.

[0054] The hot pressing module 4 is movable and height-adjustable above the clamping module 2. The hot pressing module 4 has a heatable hot pressing frame 41. The shape of the hot pressing frame 41 corresponds to the edge shape of the receiving groove 11 so that the film material is pressed by the hot pressing frame 41 and attached to the pulp product.

[0055] refer to Figure 1 and Figure 2 The pulp product is placed in the receiving tank 11 of the feeding module 1. A lifting and movable clamping module 2 is set above the feeding module 1. The clamping module 2, which can be lifted and moved independently, uses its base 21 and clamping frame 22 to clamp and move the film material, so that the film material can cover the pulp product in the receiving tank 11. Since the receiving tank 11 has a through hole 12, which is connected to the suction port 31 of the adsorption module 3, when the adsorption module 3 performs negative pressure adsorption, the receiving tank 11 forms a negative pressure environment. The pulp product itself also has micropores between the fibers, which are breathable, so that the film material can be adsorbed onto the pulp product.

[0056] Additionally, refer to Figure 1 and Figure 4 Above the clamping module 2, a liftable and movable hot-pressing module 4 is also provided. The film material is pressed by a heatable hot-pressing frame 41 in the hot-pressing module 4. Since the shape of the hot-pressing frame 41 corresponds to the edge shape of the receiving groove 11, the film material can be further adhered to the pulp product when pressed by the hot-pressing frame 41, thus completing the lamination and forming a laminated product. The laminated product can be taken out from the receiving groove 11, and a new pulp product can be placed in the receiving groove 11 and a new film material can be clamped by the clamping module 2 to perform the next lamination process.

[0057] Meanwhile, the feeding module 1 is also equipped with a cooling channel 13, which is connected to the receiving tank 11 for heat exchange. Heat exchange liquid can be introduced into the cooling channel 13 to cool the receiving tank 11, preventing the film material from melting due to excessive temperature in the repeatedly used receiving tank 11. By maintaining the heating of the hot pressing module 4 and timely cooling of the feeding module 1, the temperature of the pulp product and the film material can be stabilized. This maintains the hot pressing temperature of the film material and prevents the film material from melting due to excessive temperature in the receiving tank 11, improving the bonding strength between the film material and the pulp product in the laminated product, ensuring the integrity of the laminated film, and thus improving the yield of the laminated product.

[0058] When using the laminating apparatus of this application, the pulp product can first be placed in the receiving groove 11 of the feeding module 1, which accommodates and limits the pulp product. Then, the film material is clamped by the seat 21 and clamping frame 22 of the clamping module 2. By driving the clamping module 2 to move up and down, the film material can be brought close to the receiving groove 11 and covered on the pulp product. Alternatively, the film material can be clamped and fixed by the seat 21 and clamping frame 22 first, and the film material can be driven away from the receiving groove 11 to facilitate the placement of the pulp product in the receiving groove 11. Subsequently, the film material can be driven close to the receiving groove 11 by the clamping module 2 to cover the pulp product. This embodiment does not make specific limitations.

[0059] When the clamping module 2 moves close to the receiving groove 11, it drives the adsorption module 3 to perform an adsorption action, thereby creating negative pressure adsorption on the through hole 12 connected to the suction port 31, causing air near the through hole 12 to be drawn out. Because pulp products are also highly permeable, a negative pressure environment is formed in the cavity between the receiving groove 11 and the film material, attracting the film material to deform and adhere to the pulp product. In this process, there is no need to use a mold corresponding to the inner contour shape of the pulp product; the film material adheres to the pulp product solely through vacuum adsorption, reducing mold manufacturing costs and preventing mold damage to the film material.

[0060] After the film material is adsorbed onto the pulp product, the hot pressing module 4 is driven to cover the clamping module 2, that is, to cover the receiving groove 11. The film material is pressed by the hot pressing frame 41 corresponding to the edge shape of the receiving groove 11, so that the film material attached to the pulp product is adhered and fixed to the edge of the pulp product. At the same time, the film material is baked and heated, so that the thermoplastic film material is baked and shaped, and the pulp product is coated to form a coated product. Then, the hot pressing module 4 is driven away from the receiving groove 11 to facilitate the removal of the coated product. Subsequently, new pulp products and film materials are placed into the receiving groove 11 and clamping module 2 respectively, and the coating process of pulp products is repeated. By repeating the above process, coated products can be mass-produced.

[0061] In this embodiment, the film material can be first clamped by the clamping module 2, moving it away from the receiving groove 11 and closer to the hot pressing module 4. This allows the pulp product to be placed into the feeding module 1 while the film material is simultaneously heated by the hot pressing module 4, softening it for easier subsequent deformation and shaping. After the pulp product is placed in the receiving groove 11, the softened film material is then placed on top, and the adsorption module 3 is activated to suction the receiving groove 11. This allows the softened film material to adhere more closely to the inner surface of the pulp product, improving the fit between the film material and the complex contours of the inner surface of the pulp product. Finally, the hot pressing frame 41 of the hot pressing module 4 is placed over the receiving groove 11, pressing the edges of the film material and the pulp product together to form a single laminated product. After lamination, the hot pressing module 4 can be moved away from the laminated product to reduce excessive heating. When removing the coated product, the seat 21 and clamping frame 22 in the clamping module 2 can be kept open so that when the coated product is moved forward, the film material attached to the back can be moved between the seat 21 and clamping frame 22. New film material can continue to be clamped by the clamping module 2, thereby improving the assembly efficiency of the film material installation and positioning in the clamping module 2 and thus improving the production efficiency of the coated product.

[0062] In one embodiment, reference Figure 1 A refrigerant channel 23 is provided in the base 21. By introducing a refrigerant into the refrigerant channel 23, the clamping module 2 can be cooled, preventing it from getting too close to the hot pressing module 4 and causing the membrane material to melt. Alternatively, a refrigerant channel 23 can also be provided in the clamping frame 22, which can also cool the clamping module 2. If refrigerant channels 23 are provided in both the base 21 and the clamping frame 22, both can be cooled synchronously, further preventing the clamping module 2 from overheating and melting the clamped membrane material.

[0063] For the feeding module 1, preferably, refer to Figure 3 The number of cooling channels 13 is at least two. The cooling channels 13 are set on the side of the receiving groove 11, which can cool the side of the receiving groove 11 in multiple directions, balance the temperature of multiple areas on the feeding module 1, and avoid uneven temperature of the receiving groove 11 from affecting the bonding of the film material.

[0064] Furthermore, refer to Figure 3 By staggering the cooling channels 13 and surrounding the receiving tank 11, the layout of the cooling channels 13 can be further improved, enabling more effective cooling of multiple locations within the receiving tank 11. When the feeding module 1 is equipped with multiple receiving tanks 11, multiple receiving tanks 11 can be cooled simultaneously, achieving a uniform distribution of the contact temperature of the pulp product at multiple locations within each receiving tank 11.

[0065] Specifically, refer to Figure 5 The laminating device may also include a preheating module 5 disposed on one side of the feeding module 1. The preheating module 5 has a heating tank 51, which is used to hold and heat the pulp product. This allows the pulp product to be preheated, preventing the film from being difficult to adhere to the overly cold pulp product.

[0066] In addition, the laminating device also includes a transfer module 6, which is movably positioned between the feeding module 1 and the preheating module 5. In this embodiment, in conjunction with the lifting action of the clamping module 2, after the clamping module 2 clamps the film material and rises away from the feeding module 1, the preheated pulp product is transferred from the heating tank 51 to the receiving tank 11 through the transfer module 6. After the transfer module 6 exits the receiving tank 11, the clamping module 2 is lowered to cover the receiving tank 11, thereby realizing automated feeding of the pulp product.

[0067] Specifically, refer to Figure 6 The preheating module 5 includes a feeding mechanism 52 and a connected heating chamber 53 and a transfer chamber 54. The feeding mechanism 52 is movably disposed in the heating chamber 53 and the transfer chamber 54, wherein a heating tank 51 is disposed on the feeding mechanism 52, allowing the heating tank 51 to move between the heating chamber 53 and the transfer chamber 54. In this embodiment, the heating chamber 53 is used to heat the heating tank 51. The transfer chamber 54 is disposed on one side of the discharging module 1. After the heating tank 51 is preheated by heating in the heating chamber 53, the pulp product is conveyed to the transfer chamber 54 by the feeding mechanism 52, so that the subsequent transfer module 6 can transfer the pulp product in the transfer chamber 54 to the receiving tank 11.

[0068] In one embodiment, the heating temperature of the preheating module 5 can be made the same as the temperature of the heat exchange liquid in the cooling channel 13, so that the ambient temperature of the pulp product is consistent during the process of entering the discharging module 1 from the preheating module 5, and the pulp product is kept at a suitable temperature for attaching the film. Optionally, the heating tank 51 of the preheating module 5 is provided with a liquid flow channel 55, into which the heat exchange liquid of the cooling channel 13 can be introduced. By maintaining the same temperature of the input heat exchange liquid, the temperature of the heating tank 51 and the receiving tank 11 can be kept the same.

[0069] Or, refer to Figure 9 Alternatively, the heat exchange liquid in the cooling channel 13 can be directed to the liquid flow channel 55, which can transfer the waste heat in the container tank 11 to the heating tank 51, thereby realizing the utilization of the waste heat in the container tank 11, reducing the additional heat input, and saving energy and protecting the environment.

[0070] Optionally, refer to Figure 10Alternatively, a heat exchange tube 42 can be installed in the hot press frame 41, along with a compressor 91 and a throttle valve 92. A heat exchange medium is introduced into the cooling channel 13 and the heat exchange tube 42. The cooling channel 13 and the heat exchange tube 42 are connected to the compressor 91 and the throttle valve 92 respectively to form a heat pump system. The receiving tank 11 serves as the evaporator of the heat pump system, while the hot press frame 41 serves as the condenser. By utilizing the efficient heat transfer of the heat pump system, the additional energy required to provide heat and cold sources is reduced, making it more energy-efficient and environmentally friendly.

[0071] For the preferred structure of transfer module 6, refer to Figure 5 and Figure 6 The transfer module 6 includes a transfer track 61 and a transfer mechanism 62. The transfer mechanism 62 can move along the transfer track 61, and the transfer mechanism 62 has a suction cup 63 for picking up pulp products. Through the vacuum adsorption of the suction cup 63, the pulp products can be picked up and fixed on the transfer mechanism 62. The transfer mechanism 62 moves along the transfer track 61 to move the pulp products along the transfer track 61 to achieve transfer.

[0072] Optionally, refer to Figure 7 The laminating device also includes a guide rail 7 and a material transfer mechanism 8, wherein the guide rail 7 is fixedly connected to the material feeding module 1, and the material transfer mechanism 8 is movably mounted on the guide rail 7. By providing a gripper 81 on the material transfer mechanism 8, it can simultaneously grip and fix the pulp product and the film material, maintaining the connection between the pulp product and the film material after lamination.

[0073] Preferably, refer to Figure 7 The transfer mechanism 8 also has a suction nozzle 82 for sucking up pulp products, and uses the gripper 81 and suction nozzle 82 to fix the pulp products and film materials, that is, the laminated products after lamination, to further improve the movement stability of the transferred laminated products.

[0074] like Figure 8 As shown, this application provides a laminating system, including an edge-cutting device 101 and a laminating apparatus according to any of the above embodiments. The edge-cutting device 101 is disposed on one side of the feeding module 1 of the laminating apparatus to cut the edges of the laminated pulp product. The edge-cutting device 101 can remove excess film material and scraps of the pulp product to form independent laminated products, which can then be packaged. The laminating apparatus in this embodiment can have the same structure and achieve the same effect as the laminating apparatus in the above embodiments, and will not be described in detail here.

[0075] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0076] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0077] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0078] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A coating device, characterized in that, include: The feeding module (1) has a receiving tank (11) for placing pulp products. The receiving tank (11) has a through hole (12). The feeding module (1) is provided with a cooling channel (13), which is heat exchanged with the receiving tank (11). The clamping module (2) is movable and height-adjustable above the feeding module (1). The clamping module (2) includes a base (21) and a clamping frame (22). The base (21) and the clamping frame (22) can be moved up and down relative to the feeding module (1). The base (21) and the clamping frame (22) are used to clamp the film material. The clamping module (2) can clamp and move the film material onto the receiving groove (11). The adsorption module (3) has a suction port (31) connected to the through hole (12) so that the film material is adsorbed onto the pulp product on the receiving tank (11); The hot pressing module (4) is movable and height-adjustable above the clamping module (2). The hot pressing module (4) has a heatable hot pressing frame (41). The shape of the hot pressing frame (41) corresponds to the edge shape of the receiving groove (11) so that the film material is pressed by the hot pressing frame (41) and attached to the pulp product. A preheating module (5) is disposed on one side of the feeding module (1). The preheating module (5) has a heating tank (51) which can accommodate and heat the pulp product. The transfer module (6) is movably disposed between the feeding module (1) and the preheating module (5). The transfer module (6) is used to transfer the pulp products in the heating tank (51) to the receiving tank (11). The heating tank (51) of the preheating module (5) is provided with a liquid flow channel (55), and the heat exchange liquid of the cooling channel (13) is introduced into the liquid flow channel (55). The heating tank (51) and the container tank (11) are kept at the same temperature by maintaining the input heat exchange liquid at the same temperature.

2. The coating apparatus according to claim 1, characterized in that, A refrigerant channel (23) is provided in the seat (21) and / or the clamping frame (22).

3. The coating apparatus according to claim 1, characterized in that, The number of cooling channels (13) is at least two, and the cooling channels (13) are disposed on the side of the receiving groove (11).

4. The coating apparatus according to claim 3, characterized in that, The cooling channels (13) are staggered and surround the receiving groove (11).

5. The coating apparatus according to claim 1, characterized in that, The preheating module (5) includes a feeding mechanism (52) and a heating chamber (53) and a transfer chamber (54) connected in series. The feeding mechanism (52) is movably disposed in the heating chamber (53) and the transfer chamber (54). The heating groove (51) is disposed on the feeding mechanism (52). The heating chamber (53) is used to heat the heating groove (51). The transfer chamber (54) is disposed on one side of the discharging module (1).

6. The coating apparatus according to claim 1, characterized in that, The transfer module (6) includes a transfer track (61) and a transfer mechanism (62), the transfer mechanism (62) being movable along the transfer track (61), and the transfer mechanism (62) having a suction cup (63) for absorbing pulp products.

7. The coating apparatus according to any one of claims 1 to 4, characterized in that, Also includes: Guide rail (7) is fixedly connected to the feeding module (1); The material transfer mechanism (8) is movably mounted on the guide rail (7) and has a gripper (81) for gripping pulp products and film materials.

8. The coating apparatus according to claim 7, characterized in that, The transfer mechanism (8) also has a suction nozzle (82) for sucking up pulp products.

9. A coating system, characterized in that, The device includes an edge trimming device (101) and a laminating device according to any one of claims 1 to 8. The edge trimming device (101) is disposed on one side of the feeding module (1) of the laminating device to trim the edges of the laminated pulp product.

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