A double-sided adhesive system for a substrate

Abstract

The application relates to a double-sided glue coating system for a substrate, which comprises a first glue coating component for coating glue on the upper surface of the substrate; a release material coating component for receiving the substrate after the upper surface of the substrate is coated with glue, coating release material on the upper surface of the glue layer to prevent air, dust and moisture, and protect the glue layer from being scratched or adhered; a second glue coating component for receiving the substrate after the upper surface of the substrate is coated with release material, coating glue on the lower surface of the substrate; a film coating component for receiving the substrate after the glue is coated on the lower surface of the substrate, coating release film on the lower surface of the substrate to prevent air, dust and moisture, and protect the glue layer from being scratched or adhered; and a power component for receiving the substrate after the lower surface of the substrate is coated with release film, applying traction to the substrate to keep the substrate moving at a constant speed, realizing continuous glue coating on the upper and lower surfaces of the substrate, without turning over or interrupting the process, and significantly improving production efficiency.

Description

Technical Field

[0001] This application relates to the field of waterproof membrane manufacturing technology, and in particular to a substrate double-sided adhesive coating system. Background Technology

[0002] Waterproofing materials are essential functional materials for the construction industry and other related sectors. With the rapid development of my country's economy, the fields of construction, bridges, tunnels, agriculture, water conservancy, and transportation have all placed higher demands on the variety and quality of waterproofing materials. Among them, polymer waterproof membranes are a typical new type of building waterproofing material, which has seen rapid development in recent years due to their superior performance and innovative composite building materials. However, current polymer waterproof membranes used for base slab waterproofing employ a loose-laying method due to their inherent structure, with the substrate only bonded to one side of the building material matrix. This laying method is prone to causing the adhesion between substrates to detach, uneven substrate preparation, and severe blistering of the membrane under high-temperature environments, resulting in poor overall waterproofing system performance. Utility Model Content

[0003] To solve the above-mentioned technical problems, this application provides a substrate double-sided adhesive coating system, which sequentially applies adhesive to the upper surface of the substrate, applies an anti-sticking agent, applies adhesive to the lower surface, and applies a film to the lower surface, so as to achieve the purpose of applying adhesive to the upper and lower surfaces of the substrate, and the upper and lower surfaces of the substrate can be coated with hot melt adhesive applicable to two different bonding environments.

[0004] This application provides a double-sided adhesive coating system for a substrate, comprising: a first adhesive coating component for coating an adhesive layer onto the upper surface of a substrate; an anti-adhesion release material coating component for receiving the substrate after the adhesive layer has been applied to its upper surface and coating an anti-adhesion release material onto the upper surface of the adhesive layer; a second adhesive coating component for receiving the substrate with the anti-adhesion release material covering its upper surface and coating an adhesive layer onto the lower surface of the substrate; a film coating component for receiving the substrate after the adhesive layer has been applied to its lower surface and covering the lower surface of the substrate with a release film; and a power component for receiving the substrate with the release film covering its lower surface and applying a traction force to the substrate.

[0005] In some optional embodiments, a heating component is also included, located between the anti-sticking material coating component and the second adhesive coating component, the heating component receiving the substrate after the anti-sticking material has been coated on its upper surface and insulating the substrate.

[0006] In some optional embodiments, a corona treatment component is also included, located between the heating component and the second adhesive coating component. The corona treatment component receives the heat-insulated substrate, contacts the lower surface of the substrate, and performs corona treatment on the lower surface of the substrate.

[0007] In some alternative embodiments, the corona treatment component includes a corona sensing roller and a discharge electrode, the corona sensing roller and the discharge electrode clamping the substrate, the corona sensing roller pressing against the upper surface of the substrate, and the discharge electrode contacting the lower surface of the substrate.

[0008] In some alternative embodiments, a cooling component is also included, located between the coating component and the power component, receiving the substrate with the release film covering its lower surface and cooling the adhesive layer on the lower surface of the substrate.

[0009] In some alternative embodiments, the outer surface of the corona-sensing roller is coated with a dielectric material.

[0010] In some alternative embodiments, the dielectric material is rubber or polyester film.

[0011] In some alternative embodiments, a drive roller assembly is also included, comprising a first drive roller, a second drive roller, and a third drive roller, wherein the first drive roller and the second drive roller are located between the anti-sticking material coating component and the heating component, the first drive roller is disposed close to the anti-sticking material coating component, the second drive roller is disposed close to the heating component, and the third drive roller is located between the heating component and the corona treatment component.

[0012] In some alternative embodiments, the first adhesive application component and the second adhesive application component have the same structure; the first adhesive application component includes a first adhesive application roller and a first adhesive application element, the first adhesive application roller pressing against the lower surface of the substrate, and the first adhesive application element applying an adhesive layer to the upper surface of the substrate.

[0013] In some optional embodiments, the power component includes a first traction roller and a second traction roller, which are disposed face-to-face on the upper and lower surfaces of the substrate. The first traction roller and the second traction roller press the substrate in opposite directions of the substrate thickness. One of the first traction roller and the second traction roller rotates clockwise, and the other rotates counterclockwise.

[0014] This application has at least the following technical advantages over the prior art:

[0015] This application provides a substrate double-sided adhesive coating system, which includes a first adhesive coating component, a second adhesive coating component, a laminating component, and a power component. The first adhesive coating component coats an adhesive layer onto the upper surface of the substrate, thereby covering the upper surface of the substrate with an adhesive layer. The anti-adhesive material coating component receives the substrate after the adhesive layer has been applied to its upper surface and coats an anti-adhesive material onto the upper surface of the adhesive layer, thereby covering the upper surface of the substrate with an anti-adhesive material. This anti-adhesive material isolates the adhesive layer on the upper surface of the substrate from air, dust, and moisture, protecting the adhesive layer on the upper surface of the substrate from scratches or adhesion during subsequent winding, transportation, or stacking, ensuring a smooth and defect-free adhesive surface, and preventing the upper surface adhesive layer from sticking during transportation or stacking. The second coating component receives a substrate with an anti-stick release material on its upper surface and applies an adhesive layer to the lower surface of the substrate, thus covering the lower surface with an adhesive layer. The laminating component receives the substrate after the adhesive layer has been applied to its lower surface and covers it with a release film. This isolates the adhesive layer on the lower surface of the substrate from air, dust, and moisture. During subsequent winding, transportation, or stacking, the release film protects the adhesive layer from scratches or adhesion, ensuring a smooth and defect-free adhesive surface and preventing the lower surface adhesive layer from sticking during transportation or stacking. The first and second coating components operate simultaneously on the upper and lower surfaces of the substrate, respectively, achieving continuous coating of the upper and lower surfaces without flipping or interrupting the process, significantly improving production efficiency. It allows for the coating of hot melt adhesives applicable to two different bonding environments on both the upper and lower surfaces of the substrate. A power unit provides traction force to control the movement of the substrate. Through precise traction force adjustment, it ensures stable tension of the substrate during coating and laminating, preventing deformation or displacement, achieving full automation and reducing human error. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the substrate double-sided adhesive coating system provided in the embodiments of this application.

[0017] Explanation of reference numerals in the attached drawings: 1-First adhesive application component; 11-First adhesive application roller; 12-First adhesive application element; 2-Anti-sticking material coating component; 3-Second adhesive application component; 31-Second adhesive application roller; 32-Second adhesive application element; 4-Laminating component; 5-Power component; 51-First traction roller; 52-Second traction roller; 6-Heating component; 7-Corona treatment component; 71-Corona induction roller; 72-Discharge electrode; 8-Cooling component; 9-Drive roller assembly; 91-First drive roller; 92-Second drive roller; 93-Third drive roller; a-Substrate. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0020] Waterproofing materials are essential functional materials for the construction industry and other related sectors. With the rapid development of my country's economy, the fields of construction, bridges, tunnels, agriculture, water conservancy, and transportation have all placed higher demands on the variety and quality of waterproofing materials. Among them, polymer waterproof membranes are a typical new type of building waterproofing material, which has seen rapid development in recent years due to their superior performance and innovative composite building materials. However, current polymer waterproof membranes used for base slab waterproofing employ a loose-laying method due to their inherent structure, with the substrate only bonded to one side of the building material matrix. This laying method is prone to causing the adhesion between substrates to detach, uneven substrate preparation, and severe blistering of the membrane under high-temperature environments, resulting in poor overall waterproofing system performance.

[0021] To solve the above-mentioned technical problems, this application provides a substrate double-sided adhesive coating system, which sequentially applies adhesive to the upper surface of the substrate, applies an anti-sticking agent, applies adhesive to the lower surface, and applies a film to the lower surface, so as to achieve the purpose of applying adhesive to the upper and lower surfaces of the substrate, and the upper and lower surfaces of the substrate can be coated with hot melt adhesive applicable to two different bonding environments.

[0022] The following is in conjunction with the accompanying drawings in the instruction manual. Figure 1 Explain the structure of the substrate double-sided adhesive system in detail.

[0023] This application provides a double-sided adhesive coating system for a substrate, comprising: a first adhesive coating component 1, which coats an adhesive layer onto the upper surface of a substrate a; an anti-adhesion release material coating component 2, which receives the substrate a after the adhesive layer has been applied to its upper surface, and coats an anti-adhesion release material onto the upper surface of the adhesive layer; a second adhesive coating component 3, which receives the substrate a with the anti-adhesion release material covering its upper surface, and coats an adhesive layer onto the lower surface of the substrate a; a film coating component 4, which receives the substrate a after the adhesive layer has been applied to its lower surface, and covers the lower surface of the substrate a with a release film; and a power component 5, which receives the substrate a with the release film covering its lower surface, and applies a traction force to the substrate a.

[0024] Specifically, the substrate double-sided adhesive coating system includes a first adhesive coating component 1, an anti-adhesion material coating component 2, a second adhesive coating component 3, a film coating component 4, and a power component 5. The first adhesive coating component 1 coats an adhesive layer onto the upper surface of substrate a, thereby covering the upper surface of substrate a with an adhesive layer. The anti-adhesion material coating component 2 receives the substrate a after the adhesive layer has been applied to its upper surface and coats an anti-adhesion material onto the upper surface of the adhesive layer, thereby covering the upper surface of substrate a with an anti-adhesion material. This covers the upper surface of substrate a with an anti-adhesion material, isolating the adhesive layer on the upper surface of substrate a from air, dust, and moisture. During subsequent winding, transportation, or stacking, it protects the adhesive layer on the upper surface of substrate a from scratches or adhesion, ensuring a smooth and defect-free adhesive surface, preventing the upper surface adhesive layer from sticking during transportation or stacking, delaying the curing of the adhesive layer, avoiding affecting the adhesive performance of the adhesive layer, maintaining the stability of the adhesive layer viscosity, and allowing substrate a coated with the anti-adhesion material to be tightly wound or stacked, preventing the adhesive layer from self-adheding and becoming difficult to separate. The second adhesive application component 3 receives a substrate a with an upper surface covered by an anti-stick release material and applies an adhesive layer to the lower surface of substrate a, thus covering the lower surface of substrate a with an adhesive layer. The film coating component 4 receives the substrate a with the adhesive layer applied to its lower surface and applies a release film to the lower surface of substrate a, isolating the adhesive layer on the lower surface of substrate a from air, dust, and moisture. During subsequent winding, transportation, or stacking, the release film protects the adhesive layer from scratches or adhesion, ensuring a smooth and defect-free adhesive surface, preventing the lower surface adhesive layer from sticking during transportation or stacking, delaying adhesive layer curing, avoiding impact on adhesive performance, and maintaining the stability of adhesive layer viscosity. The substrate a with the release film applied can be tightly wound or stacked, preventing self-adhesion of the adhesive layer that would make separation difficult. The first adhesive application component 1 and the second adhesive application component 3 simultaneously operate on the upper and lower surfaces of substrate a, respectively, achieving continuous adhesive application to the upper and lower surfaces of substrate a without flipping or interrupting the process, significantly improving production efficiency. This allows for the application of hot melt adhesives suitable for two different bonding environments to the upper and lower surfaces of substrate a. The power unit 5 provides traction control for the movement of substrate a. Through precise traction adjustment, it ensures that the tension of substrate a is stable during the adhesive application and film coating process, preventing deformation or displacement, achieving full-process automation, and reducing human error.

[0025] Furthermore, the first adhesive application component 1 includes a first adhesive application roller 11 and a first adhesive application element 12. The first adhesive application roller 11 presses against the substrate a and contacts the lower surface of the substrate a. The first adhesive application element 12 applies an adhesive layer to the upper surface of the substrate a. The first adhesive application element 12 is a hot melt adhesive spraying device, and the nozzle of the hot melt adhesive spraying device faces the upper surface of the substrate a, continuously and stably spraying an adhesive layer onto the upper surface of the substrate a.

[0026] In some optional embodiments, the substrate double-sided adhesive coating system further includes a heating element 6, which is located between the anti-sticking material coating element 2 and the second adhesive coating element 3. The heating element 6 receives the substrate a after the anti-sticking material is coated on the upper surface and performs heat preservation treatment on the substrate a.

[0027] Specifically, the heating component 6 is a hot air blower. The air outlet of the hot air blower is directed towards the substrate a to keep it warm. The temperature of the hot air blowing onto the substrate a is 55° to 65°. The temperature can be selected as 55°, 60°, or 65°. This prevents the substrate a from cooling down too quickly. When the adhesive layer is applied to the lower surface of the substrate a, the temperature of the lower surface of the substrate a is too low, resulting in a large temperature difference between the upper and lower surfaces when applying the adhesive, which could lead to shrinkage and cracking of the substrate a.

[0028] In some optional embodiments, the substrate double-sided adhesive coating system further includes a corona treatment component 7, which is located between the heating component 6 and the second adhesive coating component 3. The corona treatment component 7 receives the heat-insulated substrate a, contacts the lower surface of the substrate a, and performs corona treatment on the lower surface of the substrate a.

[0029] Specifically, before applying adhesive to the lower surface of substrate a, the lower surface is subjected to corona treatment to improve the adhesion between the hot melt adhesive and the lower surface of substrate a. The corona treatment component 7 uses high-frequency, high-voltage corona discharge on the lower surface of substrate a. The high-frequency AC voltage of 5000V generates low-temperature plasma, causing free radical reactions on the lower surface of substrate a, which leads to polymer cross-linking. The surface becomes rougher and the adhesion of substrate a to polar hot melt adhesive is increased. These plasmas penetrate into the lower surface of substrate a through electrostatic discharge and penetration, destroying its molecular structure, thereby oxidizing and polarizing the surface molecules being treated. The ionic electrostatic discharge erodes the lower surface of substrate a, thus increasing the adhesion of the lower surface of substrate a.

[0030] In some alternative embodiments, the corona treatment component 7 includes a corona sensing roller 71 and a discharge electrode 72, which clamp the substrate a, with the corona sensing roller 71 pressing against the upper surface of the substrate a and the discharge electrode 72 contacting the lower surface of the substrate a.

[0031] Specifically, the discharge electrode 72 is typically a metal blade, tungsten wire, or aluminum cylinder, and is connected to the high-voltage end. The surface of the corona induction roller 71 is covered with a corrosion-resistant material, such as silicone or ceramic, and serves as a grounding electrode. The surface of the corona induction roller 71 is wrapped with a dielectric material, such as rubber or polyester film, which is used for uniform discharge and to prevent arc damage to the substrate a.

[0032] In some optional embodiments, the substrate double-sided adhesive coating system further includes a cooling component 8 located between the coating component 4 and the power component 5, which receives the substrate a with the release film covering its lower surface and cools the adhesive layer on the lower surface of the substrate a.

[0033] Specifically, the first adhesive application component 1 applies an adhesive layer to the upper surface of the substrate a; the anti-sticking material coating component 2 receives the substrate a with the adhesive layer applied to its upper surface and applies an anti-sticking material to the upper surface of the adhesive layer; the heating component 6 receives the substrate a with the anti-sticking material applied to its upper surface and heats the substrate a; the corona treatment component 7 receives the heat-insulated substrate a, contacts the lower surface of the substrate a, and performs corona treatment on the lower surface of the substrate a; the second adhesive application component 3 receives the substrate a with the corona treatment on its lower surface and applies an adhesive layer to the lower surface of the substrate a; the film coating component 4 receives the substrate a with the adhesive layer applied to its lower surface and covers the lower surface of the substrate a with a release film; the cooling component 8 receives the substrate a with the release film covering its lower surface and cools the adhesive layer on the lower surface of the substrate a; and the power component 5 receives the substrate a with the adhesive layer on its lower surface cooled and applies a traction force to the substrate a.

[0034] Furthermore, after the adhesive coating is applied to the lower surface of substrate a, it undergoes cooling treatment via cooling component 8. This prevents the hot melt adhesive on the lower surface of substrate a from overflowing from the release film due to subsequent extrusion deformation by power component 5 if it has not been cooled. The temperature of cooling component 8 is controlled at 70±5℃. Cooling component 8 is a circulating cooling water roller, which includes a water tank, a circulating pipe, a water pump, and a roller. The roller is fitted outside the circulating pipe. The water tank is connected to the inlet and outlet of the circulating pipe, and the inlet and outlet of the water pump are connected to the water tank and the circulating pipe, respectively.

[0035] In some optional embodiments, the substrate double-sided adhesive coating system further includes a drive roller assembly 9, including a first drive roller 91, a second drive roller 92, and a third drive roller 93. The first drive roller 91 and the second drive roller 92 are located between the anti-sticking material coating component 2 and the heating component 6. The first drive roller 91 is disposed close to the anti-sticking material coating component 2, the second drive roller 92 is disposed close to the heating component 6, and the third drive roller 93 is located between the heating component 6 and the corona treatment component 7.

[0036] Specifically, the first drive roller 91 and the first adhesive coating component 1 are at the same height, and a preset distance is set between them. The anti-sticking material coating component 2 is used to coat the substrate a between the first drive roller 91 and the first adhesive coating component 1 with an anti-sticking material. The first adhesive coating roller 11 of the first adhesive coating component 1 presses against the substrate a and contacts its lower surface. The first drive roller 91 abuts against the substrate a and contacts its lower surface, the second drive roller 92 abuts against the substrate a and contacts its lower surface, and the third drive roller 93 abuts against the substrate a and contacts its lower surface. The second drive roller 92 is used to support the substrate a, assist its movement, and adjust its current height. The height of the second drive roller 92 is greater than that of the first drive roller 91. The height of the third drive roller 93 is the same as that of the second drive roller 92, and a preset distance is set between them. The heating component 6 is used to keep the substrate a warm.

[0037] Furthermore, the corona sensing roller 71 abuts against the substrate a and contacts the upper surface of the substrate a. The discharge electrode 72 abuts against the substrate a and contacts the lower surface of the substrate a. The corona sensing roller 71 is also used to adjust the current height of the substrate a.

[0038] In some optional embodiments, the second adhesive application component 3 includes a second adhesive application roller 31 and a second adhesive application element 32, wherein the second adhesive application roller 31 presses against the upper surface of the substrate a, and the second adhesive application element 32 applies an adhesive layer to the lower surface of the substrate a.

[0039] Specifically, the second adhesive roller 31 presses against the substrate a and contacts the upper surface of the substrate a, while the second adhesive application component 3 sprays hot melt adhesive onto the lower surface of the substrate a. The second adhesive application element 32 is a hot melt adhesive spraying device.

[0040] In some alternative embodiments, the film-coating component 4 is a film-laying roller and a release film roll, with the release film roll wound around the film-laying roller 41.

[0041] Specifically, the release film is wound into a roll and installed on the release roller. After unwinding, one end of the release film is laid on the lower surface of the substrate a. When the power component 5 moves the substrate a, it will move the release film, thereby causing the release film to detach from the release roller and gradually cover the adhesive layer on the lower surface of the substrate a.

[0042] In some optional embodiments, the power component 5 includes a first traction roller 51 and a second traction roller 52, which are arranged face to face on the upper and lower surfaces of the substrate a. The first traction roller 51 and the second traction roller 52 press the substrate a in opposite directions to the thickness of the substrate a. One of the first traction roller 51 and the second traction roller 52 rotates clockwise and the other rotates counterclockwise.

[0043] Specifically, the power unit 5 also includes a first motor and a second motor. The first motor drives the first traction roller to rotate, and the second motor drives the second traction roller 52 to rotate first. One of the first traction roller 51 and the second traction roller 52 rotates clockwise, and the other rotates counterclockwise. The counterclockwise rotation of the first traction roller 51 and the second traction roller 52 moves the substrate a. By adjusting the squeezing force of the first traction roller 51 and the second traction roller 52 on the substrate a, the traction force can be adjusted to ensure that the tension of the substrate a is stable during the adhesive coating and lamination process, preventing deformation or displacement, realizing full-process automation, and reducing human error.

[0044] In this application, the term "multiple" refers to at least two or more, unless otherwise expressly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be 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 in this utility model based on the specific circumstances.

[0045] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A substrate double-sided adhesive coating system, characterized in that, include: The first adhesive coating component (1) coats an adhesive layer onto the upper surface of the substrate (a); The anti-sticking material coating component (2) receives the substrate (a) after the upper surface is coated with an adhesive layer, and coats the upper surface of the adhesive layer with an anti-sticking material; The second adhesive coating component (3) receives the substrate (a) whose upper surface is covered with an anti-sticking material, and coats the lower surface of the substrate (a) with an adhesive layer. The coating component (4) receives the substrate (a) after an adhesive layer has been applied to the lower surface of the substrate (a), and covers the lower surface of the substrate (a) with a release film; The power unit (5) receives the substrate (a) with the lower surface covered by the isolation film and applies a traction force to the substrate (a).

2. The substrate double-sided adhesive coating system according to claim 1, characterized in that, It also includes a heating component (6), which is located between the anti-sticking material coating component (2) and the second adhesive coating component (3). The heating component (6) receives the substrate (a) after the upper surface is coated with the anti-sticking material and keeps the substrate (a) warm.

3. The substrate double-sided adhesive coating system according to claim 2, characterized in that, It also includes a corona treatment component (7), which is located between the heating component (6) and the second adhesive coating component (3). The corona treatment component (7) receives the heat-insulated substrate (a), contacts the lower surface of the substrate (a), and performs corona treatment on the lower surface of the substrate (a).

4. The substrate double-sided adhesive coating system according to claim 3, characterized in that, The corona treatment component (7) includes a corona sensing roller (71) and a discharge electrode (72). The corona sensing roller (71) and the discharge electrode (72) clamp the substrate (a). The corona sensing roller (71) presses against the upper surface of the substrate (a), and the discharge electrode (72) contacts the lower surface of the substrate (a).

5. The substrate double-sided adhesive coating system according to claim 4, characterized in that, The outer surface of the corona sensing roller (71) is covered with dielectric material.

6. The substrate double-sided adhesive coating system according to claim 5, characterized in that, The dielectric material is rubber or polyester film.

7. The substrate double-sided adhesive coating system according to claim 4, characterized in that, It also includes a cooling component (8) located between the coating component (4) and the power component (5), which receives the substrate (a) after the release film is applied to its lower surface and cools the adhesive layer on the lower surface of the substrate (a).

8. The substrate double-sided adhesive coating system according to claim 4, characterized in that, It also includes a drive roller assembly (9), comprising a first drive roller (91), a second drive roller (92), and a third drive roller (93). The first drive roller (91) and the second drive roller (92) are located between the anti-sticking material coating component (2) and the heating component (6). The first drive roller (91) is disposed close to the anti-sticking material coating component (2), the second drive roller (92) is disposed close to the heating component (6), and the third drive roller (93) is located between the heating component (6) and the corona treatment component (7).

9. The substrate double-sided adhesive coating system according to claim 1, characterized in that, The first adhesive coating component (1) and the second adhesive coating component (3) have the same structure; The first adhesive application component (1) includes a first adhesive application roller (11) and a first adhesive application element (12). The first adhesive application roller (11) presses against the lower surface of the substrate (a), and the first adhesive application element (12) applies an adhesive layer to the upper surface of the substrate (a).

10. The substrate double-sided adhesive coating system according to claim 1, characterized in that, The power unit (5) includes a first traction roller (51) and a second traction roller (52). The first traction roller (51) and the second traction roller (52) are arranged face to face on the upper and lower surfaces of the substrate (a). The first traction roller (51) and the second traction roller (52) respectively press the substrate (a) in opposite directions of the thickness of the substrate (a). One of the first traction roller (51) and the second traction roller (52) rotates clockwise and the other rotates counterclockwise.

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