Spraying device for removing adhesive materials on paper edges

By installing spray devices on both sides of the tension roller and the expansion roller of the paper machine, using air-water spray to remove sticky materials, the problem of sticky materials on the edge of paper is solved, significantly reducing the number of wipes and furnace recovery losses during the roll change, and improving the Productivity.

CN222267494UActive Publication Date: 2024-12-31UPM CHINA
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Patent Information

Application Number
CN202323559293.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-26
Publication Date
2024-12-31
Estimated Expiration
2033-12-26

AI Technical Summary

Technical Problem

During the production of grazing paper, adhesive materials are often adhered to the edges of the paper on both sides of the tension roller and the expansion roller, resulting in dead marks and broken edges on the paper web, increasing the wiping workload during the initial roll change, affecting operation efficiency.

Method used

A spray device is designed, including a first sprayer and a second sprayer, installed on the operating side and the transmission side of the paper machine, forming an air-water spray by mixing compressed air and water, spraying to the roller surface near the edge of the paper, and combining with an air intake valve , gas volume regulating valve, water replenishment valve, water volume regulating valve, water storage container and filter, adjust the spray parameters to appropriately remove adhesive materials.

Benefits of technology

The number of wipes when changing the paper rolls has been greatly reduced, the loss of refrigeration is reduced, and the production efficiency has been improved. It has been maintained for more than half a day without wiping. The average reduction of refrigeration is 6,000 meters per day, reducing the workload of employees.

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Abstract

The utility model relates to a spraying device for removing adhesive materials on paper edges. The spraying device comprises a first sprayer, a second sprayer, a compressed air source, a water source, an air conveying pipeline and a water conveying pipeline, wherein the first sprayer is arranged on the operation side of the paper machine and is used for spraying on the surface of a roller near a paper edge on the operation side of the paper machine; the second sprayer is mounted on the transmission side of the paper machine and is used for spraying on the roller surface near the paper edge on the transmission side of the paper machine; the air conveying pipeline is used for conveying compressed air to the first sprayer and the second sprayer from the compressed air source. The water conveying pipeline is used for conveying water from a water source to the first sprayer and the second sprayer. The utility model has the following beneficial technical effects: the problem that materials are adhered to the two side parts of the tension roller and the unfolding roller during transmission is greatly improved and even solved, and the wiping frequency during paper roll replacement is greatly reduced.
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Description

Technical Field

[0001] The utility model relates to a spray device for removing sticky materials from paper edges, and is mainly applied to the technical field of paper production. Background Art

[0002] During the production of glassine paper, the edges of the tension roller and the unwinding roller of the primary roll machine on both sides (operating side and transmission side) often stick to the paper edges, which will cause the paper web to have problems such as PVA sticking, dead lines on the edges, and even broken edges. The primary roll must be wiped clean when changing rolls, but the workload of the recycle and employees will increase when wiping. For example, for 40g glassine paper, since the paper is thin and there is a lot of coating on the surface, the stickiness has a great impact on the operation, so each paper roll must be wiped; for glassine paper of other weights (above 40g), it is necessary to wipe every other paper roll. Each time the primary roll primer is wiped, about 1,000 meters of paper will be recycled, and these primers are not easy to recycle, because when wiping with a scouring pad dipped in water, the stickiness will fall off and roll up with the paper web inside the paper roll. These stickiness will stick to the paper web, causing frequent paper breaks during recycling, increasing the workload of on-site employees.

[0003] Therefore, there is a need for a device for removing paper edge adhesive that can solve at least some of the deficiencies in the prior art. Utility Model Content

[0004] One purpose of the utility model is to provide a device for removing sticky material from paper edges, which can overcome at least some of the defects in the prior art, greatly improve or even solve the problem of sticky material on both sides of the tension roller and the unwinding roller, and greatly reduce the number of wiping times when changing paper rolls.

[0005] The above objects of the utility model are achieved by a spray device for removing sticky materials from paper edges, the spray device for removing sticky materials from paper edges comprises a first sprayer, a second sprayer, a compressed air source, a water source, an air pipeline, and a water pipeline;

[0006] Among them, the first sprayer is installed on the operating side of the paper machine, and is used to spray onto the roller surface near the paper edge of the operating side of the paper machine; the second sprayer is installed on the driving side of the paper machine, and is used to spray onto the roller surface near the paper edge of the driving side of the paper machine; the air pipeline is used to transport compressed air from the compressed air source to the first sprayer and the second sprayer respectively; the water pipeline is used to transport water from the water source to the first sprayer and the second sprayer respectively.

[0007] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: greatly improve or even solve the problem of sticky materials on both sides of the tension roller and the unwinding roller, and greatly reduce the number of wiping times when changing paper rolls.

[0008] Preferably, the roller surface is the roller surface of the primary winder tension roller and / or the primary winder unwinding roller.

[0009] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: greatly improve or even solve the problem of sticky materials on both sides of the tension roller and the unwinding roller, and greatly reduce the number of wiping times when changing paper rolls.

[0010] Preferably, the spray device for removing sticky materials from paper edges further comprises an air intake valve and an air volume regulating valve, wherein the air intake valve is arranged on the air supply pipeline, and the air volume regulating valve is arranged on each of the first sprayer and the second sprayer.

[0011] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: by adjusting the air inlet valve and the air volume regulating valve, the air flow entering the sprayer can be appropriately adjusted to form an ideal water mist, thereby better improving the problem of sticky materials on both sides of the tension roller and the unfolding roller.

[0012] Preferably, the spray device for removing sticky materials from paper edges further comprises a water replenishment valve and a water volume regulating valve, wherein the water replenishment valve is arranged on the water delivery pipeline, and the water volume regulating valve is arranged on each of the first sprayer and the second sprayer.

[0013] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: by adjusting the water supply valve and the water volume regulating valve, the water flow entering the sprayer can be appropriately adjusted to form an ideal water mist, thereby better improving the problem of sticky materials on both sides of the tension roller and the unfolding roller.

[0014] Preferably, the spray device for removing sticky materials from paper edges further comprises a water storage container, and the water storage container is connected to the first sprayer and the second sprayer via a water pipeline, and is also connected to the water source via a water pipeline.

[0015] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: through the setting of the water storage container, the water flow entering the sprayer can be appropriately provided, thereby forming an ideal water mist, and better improving the problem of sticky materials on both sides of the tension roller and the unfolding roller.

[0016] Preferably, the spray device for removing sticky materials on paper edges further comprises a filter, and the filter is disposed in the water storage container.

[0017] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: through the setting of the filter, impurities in the water flow can be appropriately filtered out, thereby forming an ideal water mist, and better improving the problem of sticky materials on both sides of the tension roller and the unfolding roller.

[0018] Preferably, each of the first sprayer and the second sprayer comprises a sprayer body, a nozzle, and a nozzle connecting pipe, and the nozzle connecting pipe is connected between the sprayer body and the nozzle.

[0019] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: through appropriate sprayer design, the problem of sticky materials on both sides of the tension roller and the unfolding roller can be better improved.

[0020] Preferably, the nozzle is located outside the paper web and sprays toward the inside of the paper web, and a first angle of the nozzle connecting pipe relative to a vertical plane is 30 to 45 degrees.

[0021] According to the above technical scheme, the spray device for removing sticky material from paper edges of the utility model can achieve the following beneficial technical effects: through the appropriate design of the first angle of the nozzle connecting tube, the problem of sticky material on both sides of the tension roller and the unfolding roller can be better improved.

[0022] Preferably, the nozzle connecting pipe forms a second angle upward relative to the horizontal plane, so that the nozzle can spray onto the roller surface within a range of 30 to 60 degrees with respect to the roller centerline angle.

[0023] According to the above technical scheme, the spray device for removing sticky material from paper edges of the utility model can achieve the following beneficial technical effects: through the appropriate second angle design of the nozzle connecting tube, the problem of sticky material on both sides of the tension roller and the unfolding roller can be better improved.

[0024] Preferably, the vicinity of the paper edge refers to a range of 10 to 15 cm on both sides of the paper edge.

[0025] According to the above technical scheme, the spray device for removing sticky material from paper edges of the utility model can achieve the following beneficial technical effects: through the appropriate spray range design, the problem of sticky material on both sides of the tension roller and the unfolding roller can be better improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a general schematic diagram of a spray device for removing sticky materials from paper edges according to an embodiment of the utility model;

[0027] Figure 2A This is a schematic diagram of a first spray angle of a spray device for removing sticky materials from paper edges according to an embodiment of the utility model;

[0028] Figure 2B It is a schematic diagram of the second spray angle of a spray device for removing sticky materials on paper edges according to an embodiment of the utility model.

[0029] Reference numerals list

[0030] 1: First Sprayer

[0031] 2: Second sprayer

[0032] 3: Compressed air source

[0033] 4: Water

[0034] 5: Gas pipeline

[0035] 6: Water pipeline

[0036] 7: Intake valve

[0037] 8: Water supply valve

[0038] 9: Water storage container

[0039] 10: Filter

[0040] 11: Gas volume regulating valve

[0041] 12: Water flow regulating valve

[0042] 21: Nozzle

[0043] 22: Nozzle connecting pipe

[0044] 30: Roller

[0045] 31: Roller end surface

[0046] A: First angle

[0047] B: Second angle

[0048] C: Roller centerline angle

[0049] W: Paper width

[0050] OS: Machine operating side

[0051] DS: Drive side of paper machine DETAILED DESCRIPTION

[0052] The specific implementation methods of the utility model will be described below. It should be noted that in the specific description of these implementation methods, in order to make a concise description, it is impossible for this specification to describe all the features of the actual implementation methods in detail. It should be understood that in the actual implementation of any implementation method, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one implementation method to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by the utility model, some changes in design, manufacturing or production based on the technical content disclosed in this disclosure are just conventional technical means, and should not be understood as insufficient content of this disclosure.

[0053] Unless otherwise defined, the technical or scientific terms used in the claims and the specification shall have the usual meaning understood by persons with ordinary skills in the technical field to which the utility model belongs. The words "first", "second" and similar words used in the patent application specification and the claims of the utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limitation, but indicate the existence of at least one. "Include" or "comprises" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalent elements, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0054] In the following description, in order to clearly demonstrate the structure and working mode of the utility model, many directional words will be used for description, but the words "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", "down", etc. should be understood as convenient terms and should not be understood as restrictive terms.

[0055] Figure 1 It is a general schematic diagram of a spray device for removing sticky materials from paper edges according to an embodiment of the utility model; Figure 2A This is a schematic diagram of a first spray angle of a spray device for removing sticky materials from paper edges according to an embodiment of the utility model; Figure 2B It is a schematic diagram of the second spray angle of a spray device for removing sticky materials on paper edges according to an embodiment of the utility model.

[0056] like Figure 1-2BAs shown, a spray device for removing sticky materials from paper edges according to an embodiment of the utility model comprises a first sprayer 1, a second sprayer 2, a compressed air source 3, a water source 4, an air pipeline 5, and a water pipeline 6;

[0057] Among them, the first sprayer 1 is installed on the operating side OS of the paper machine, and is used to spray onto the roller surface near the paper edge of the paper machine operating side OS; the second sprayer 2 is installed on the driving side DS of the paper machine, and is used to spray onto the roller surface near the paper edge of the paper machine driving side DS; the air supply pipeline 5 is used to transport compressed air from the compressed air source 3 to the first sprayer 1 and the second sprayer 2 respectively; the water supply pipeline 6 is used to transport water from the water source 4 to the first sprayer 1 and the second sprayer 2 respectively.

[0058] According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: greatly improve or even solve the problem of sticky materials on both sides of the tension roller and the unwinding roller, and greatly reduce the number of wiping times when changing paper rolls.

[0059] Specifically, the air pipeline 5 transports compressed air from the compressed air source 3 to the first sprayer 1 and the second sprayer 2, respectively, and the water pipeline 6 transports water from the water source 4 to the first sprayer 1 and the second sprayer 2, respectively. Therefore, the compressed air and water are mixed with each other in the first sprayer 1 and the second sprayer 2 to form an air-water mixed spray, which is sprayed onto the surface of the roller (for example, the tension roller and / or the unfolding roller) near the paper edge. After the paper edge positions on both sides of the tension roller and the unfolding roller are kept lubricated, the sticky materials on both sides of the tension roller and the unfolding roller are greatly improved or even solved, and there is no need to wipe them every time the paper roll is changed. After more than a month of testing and tracking, it can currently be maintained for at least half a day or even does not need to be wiped.

[0060] The existing technology: on average, the first roll needs to be wiped 7 times a day when changing the first roll, and each time the bottoming is returned to the furnace, 1000 meters are lost, and about 7000 meters of return are lost every day. The improved situation of the utility model: on average, only one wipe is needed when changing the first roll every day, or even no wipe is needed; the return to the furnace is reduced by at least 6000 meters on average every day, and the return to the furnace is reduced by an average of 2.36 tons / day.

[0061] In some embodiments, Figure 2A As shown, the surface of the roller 30 is the roller surface of the tension roller of the primary winder and / or the unwinding roller of the primary winder (i.e., the cylindrical side surface of the roller 30). According to the above technical scheme, the spray device for removing sticky materials on the edges of paper of the utility model can achieve the following beneficial technical effects: greatly improve or even solve the problem of sticky materials on both sides of the tension roller and the unwinding roller, and greatly reduce the number of wiping times when changing paper rolls.

[0062] In some embodiments, Figure 1As shown, the spray device for removing sticky materials from paper edges further comprises an air inlet valve 7 and an air volume regulating valve 11, wherein the air inlet valve 7 is arranged on the air delivery pipeline 5, and the air volume regulating valve 11 is arranged on each of the first sprayer 1 and the second sprayer 2. According to the above technical scheme, the spray device for removing sticky materials from paper edges of the utility model can achieve the following beneficial technical effects: by adjusting the air inlet valve and the air volume regulating valve, the air flow entering the sprayer can be appropriately adjusted, thereby forming an ideal water mist, and better improving the problem of sticky materials on both sides of the tension roller and the unwinding roller.

[0063] In some embodiments, Figure 1 As shown, the spray device for removing sticky materials from paper edges also includes a water replenishment valve 8 and a water volume regulating valve 12. The water replenishment valve 8 is arranged on the water delivery pipe 6, and the water volume regulating valve 12 is arranged on each of the first sprayer 1 and the second sprayer 2. According to the above technical scheme, the spray device for removing sticky materials from paper edges of the utility model can achieve the following beneficial technical effects: by adjusting the water replenishment valve and the water volume regulating valve, the water flow entering the sprayer can be appropriately adjusted to form an ideal water mist, thereby better improving the problem of sticky materials on both sides of the tension roller and the unwinding roller.

[0064] In some embodiments, Figure 1 As shown, the spray device for removing sticky materials from paper edges also includes a water storage container 9, which is connected to the first sprayer 1 and the second sprayer 2 through a water pipeline 6, and is also connected to the water source 4 through the water pipeline 6. According to the above technical scheme, the spray device for removing sticky materials from paper edges of the utility model can achieve the following beneficial technical effects: through the setting of the water storage container, the water flow entering the sprayer can be appropriately provided, thereby forming an ideal water mist, and better improving the problem of sticky materials on both sides of the tension roller and the unfolding roller. In other words, the water storage container 9 is set in the middle position of the water pipeline 6, connected between the first sprayer 1 and the second sprayer 2 and the water source 4, and plays the role of intermediate water storage.

[0065] In some embodiments, Figure 1 As shown, the spray device for removing sticky materials from paper edges also includes a filter 10, and the filter 10 is arranged in the water storage container 9. According to the above technical scheme, the spray device for removing sticky materials from paper edges of the utility model can achieve the following beneficial technical effects: through the setting of the filter, impurities in the water flow can be appropriately filtered out, thereby forming an ideal water mist, and better improving the problem of sticky materials on both sides of the tension roller and the unwinding roller.

[0066] In some embodiments, Figure 1-2BAs shown, each of the first sprayer 1 and the second sprayer 2 includes a sprayer body, a nozzle 21, and a nozzle connecting pipe 22, and the nozzle connecting pipe 22 is connected between the sprayer body and the nozzle 21. According to the above technical scheme, the spray device for removing sticky materials on the edge of paper of the utility model can achieve the following beneficial technical effects: through the appropriate sprayer design, the problem of sticky materials on both sides of the tension roller and the unwinding roller can be better improved.

[0067] In some embodiments, Figure 2A As shown, the nozzle 21 is located outside the paper web W and sprays toward the inside of the paper web W. The first angle A of the nozzle connecting pipe 22 relative to the vertical plane (i.e., the plane where the roller end surface 31 is located) is 30 to 45 degrees. According to the above technical scheme, the spray device for removing sticky materials from the edge of paper of the utility model can achieve the following beneficial technical effects: through the appropriate design of the first angle of the nozzle connecting pipe, the problem of sticky materials on both sides of the tension roller and the unwinding roller can be better improved.

[0068] In some embodiments, Figure 2A and Figure 2B As shown, the extending direction of the nozzle 21 is substantially consistent with that of the nozzle connecting tube 22. According to the above technical solution, the spray device for removing sticky materials from paper edges of the utility model can achieve the following beneficial technical effects: by adjusting the direction of the nozzle connecting tube, the spraying direction of the nozzle can be adjusted, and the problem of sticky materials on both sides of the tension roller and the unwinding roller can be better improved.

[0069] In some embodiments, Figure 2B As shown, the nozzle connecting pipe 22 forms a second angle B upward relative to the horizontal plane, so that the nozzle 21 can spray to the roller surface within the range of 30 to 60 degrees of the roller centerline angle C (i.e., the angle formed by two radii in the roller end surface 31). According to the above technical scheme, the spray device for removing sticky materials from paper edges of the utility model can achieve the following beneficial technical effects: through the appropriate design of the second angle of the nozzle connecting pipe, the problem of sticky materials on both sides of the tension roller and the unfolding roller can be better improved.

[0070] Even better, if Figure 2B As shown, the nozzle connecting pipe 22 forms a second angle B upward relative to the horizontal plane, so that the nozzle 21 can spray onto the roller surface within a range of 45 degrees of the roller centerline angle C (ie, the angle formed by two radii in the roller end surface 31).

[0071] In some embodiments, Figure 2A As shown, the vicinity of the paper edge refers to the range of 10 to 15 cm on both sides of the paper edge. According to the above technical scheme, the spray device for removing sticky materials from the paper edge of the utility model can achieve the following beneficial technical effects: through the appropriate spray range design, the problem of sticky materials on both sides of the tension roller and the unfolding roller can be better improved.

[0072] It should be noted that the 10 cm range on both sides of the paper edge mentioned here means that the nozzle spray range takes into account both the inside and outside of the paper edge, and the inside and outside of the paper edge add up to 10 cm. Similarly, the 15 cm range on both sides of the paper edge mentioned here means that the nozzle spray range takes into account both the inside and outside of the paper edge, and the inside and outside of the paper edge add up to 15 cm.

[0073] More preferably, when the nozzle 21 sprays within a range of 10 cm on both sides of the paper edge, the inside of the paper edge occupies about 2 / 3 of the spray range (i.e., about 6.7 cm), and the outside of the paper edge occupies about 1 / 3 of the spray range (i.e., about 3.7 cm). Similarly, when the nozzle 21 sprays within a range of 15 cm on both sides of the paper edge, the inside of the paper edge occupies about 2 / 3 of the spray range (i.e., about 10 cm), and the outside of the paper edge occupies about 1 / 3 of the spray range (i.e., about 5 cm).

[0074] The operation method of the spray device for removing sticky materials from paper edges according to an embodiment of the utility model is as follows:

[0075] After the spray device is installed, open the water supply valve 8 to fill the water storage container 9 with water to at least cover the filter 10, open the air inlet valve 7, adjust the air volume and water volume of the first sprayer 1 and the second sprayer 2 to form an ideal water mist, and then fine-tune the nozzle angle to achieve the required cleaning (spraying) range to keep the cleaning range fully lubricated.

[0076] The specific implementation modes of the present invention are described above, but those skilled in the art will understand that the above specific implementation modes do not constitute limitations to the present invention, and those skilled in the art can make various modifications based on the above disclosure without exceeding the scope of the present invention.

Claims

1. A spray device for removing sticky material from paper edges, characterized in that: The spray device for removing sticky material from paper edges comprises a first sprayer (1), a second sprayer (2), a compressed air source (3), a water source (4), an air pipeline (5), and a water pipeline (6); The first sprayer (1) is installed on the operating side (OS) of the paper machine and is used to spray onto the roller surface near the paper edge of the operating side (OS) of the paper machine; the second sprayer (2) is installed on the driving side (DS) of the paper machine and is used to spray onto the roller surface near the paper edge of the driving side (DS) of the paper machine; the air supply pipeline (5) is used to transport compressed air from the compressed air source (3) to the first sprayer (1) and the second sprayer (2) respectively; the water supply pipeline (6) is used to transport water from the water source (4) to the first sprayer (1) and the second sprayer (2) respectively.

2. The spray device for removing sticky material from paper edges according to claim 1, characterized in that: The roller surface is the roller surface of the primary winder tension roller and / or the primary winder unwinding roller.

3. The spray device for removing sticky material from paper edges according to claim 1, characterized in that: The spray device for removing sticky material from paper edges further comprises an air intake valve (7) and an air volume regulating valve (11), wherein the air intake valve (7) is arranged on the air delivery pipeline (5), and the air volume regulating valve (11) is arranged on each of the first sprayer (1) and the second sprayer (2).

4. The spray device for removing sticky material from paper edges according to claim 1, characterized in that: The spray device for removing sticky material from paper edges further comprises a water replenishment valve (8) and a water volume regulating valve (12), wherein the water replenishment valve (8) is arranged on the water delivery pipeline (6), and the water volume regulating valve (12) is arranged on each of the first sprayer (1) and the second sprayer (2).

5. The spray device for removing sticky material from paper edges according to claim 1, characterized in that: The spray device for removing sticky material from paper edges also includes a water storage container (9), which is connected to the first sprayer (1) and the second sprayer (2) via a water pipeline (6), and is also connected to the water source (4) via a water pipeline (6).

6. The spray device for removing sticky material from paper edges as claimed in claim 5, characterized in that: The spray device for removing sticky material from paper edges also includes a filter (10), and the filter (10) is arranged in the water storage container (9).

7. The spray device for removing sticky material from paper edges according to claim 1, characterized in that: Each of the first sprayer (1) and the second sprayer (2) comprises a sprayer body, a nozzle (21), and a nozzle connecting pipe (22), wherein the nozzle connecting pipe (22) is connected between the sprayer body and the nozzle (21).

8. The spray device for removing sticky material from paper edges according to claim 7, characterized in that: The nozzle (21) is located outside the paper web (W) and sprays toward the inside of the paper web (W); the first angle (A) of the nozzle connecting pipe (22) relative to the vertical plane is 30 to 45 degrees.

9. The spray device for removing sticky material from paper edges according to claim 7, characterized in that: The nozzle connecting pipe (22) forms a second angle (B) upward relative to the horizontal plane, so that the nozzle (21) can spray onto the roller surface within a range of 30 to 60 degrees of the roller centerline angle (C).

10. The spray device for removing sticky material from paper edges according to claim 1, characterized in that: The area near the paper edge refers to a range of 10 to 15 cm on both sides of the paper edge.