Veneer treatment system and veneer treatment method

Abstract

The invention discloses a wood veneer treatment system and a wood veneer treatment method. The system comprises a carbonization furnace used for heating and carbonizing wood veneers; the belt conveyor is used for conveying carbonized veneers; the first spraying device is arranged at the first station and used for spraying chemicals to the veneers located on the surface of the belt conveyor; the first drying device is arranged at the second station and is used for drying the medicament on the surface of the veneer; the turn-over mechanism is arranged at the third station and used for picking up the veneers conveyed from the second station, turning over the veneers and placing the veneers on a belt conveyor so as to convey the veneers to a fourth station; the second spraying device is arranged at the fourth station and used for spraying chemicals to the veneers conveyed from the third station; and the second drying device is arranged at the fifth station and used for drying the medicament on the surface of the veneer conveyed by the fourth station. When the system is used and combined with the method for processing the wood veneer, various attributes of the wood veneer can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wood processing, and more particularly to a veneer processing system and a veneer processing method. Background Art

[0002] As people's environmental protection concept continues to strengthen, environmentally friendly products have become ubiquitous in production and life. Hotel room cards are mostly made of plastic. Every year, the hotel industry consumes a large number of room cards and produces a large amount of white garbage. In order to solve this problem, wooden room cards came into being. To produce wooden room cards, multiple layers of thin wood veneer need to be laminated and bonded to form a card. However, the texture of wood veneer is relatively soft and easily absorbs moisture and deforms, resulting in insufficient stability of the wooden card, which is very easy to bend and has a very low product yield.

[0003] Therefore, how to provide a veneer processing system and a veneer processing method to improve the material properties of the veneer has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The object of the present invention is to provide a veneer processing system and a veneer processing method which can improve the material properties of the veneer.

[0005] A first aspect of the present invention provides a veneer processing system, comprising:

[0006] A carbonization furnace, used to heat and carbonize the veneer;

[0007] A belt conveyor is used to convey the carbonized veneer; the belt conveyor comprises a first station, a second station, a third station, a fourth station and a fifth station which are sequentially arranged along the conveying direction;

[0008] A first spraying device, disposed at a first station, for spraying a reagent onto the veneer located on the surface of the belt conveyor;

[0009] A first drying device, disposed at the second station, is used to dry the agent on the surface of the veneer;

[0010] The turning mechanism is arranged at the third station, and is used to pick up the veneer delivered from the second station, and turn the veneer over and place it on the belt conveyor to be delivered to the fourth station;

[0011] The second spraying device is arranged at the fourth station and is used to spray the veneer delivered from the third station with the agent;

[0012] The second drying device is arranged at the fifth station and is used for drying the agent on the surface of the veneer delivered from the fourth station.

[0013] Optionally, the belt conveyor includes a first belt conveyor and a second belt conveyor which are arranged end to end opposite to each other and spaced apart in the conveying direction;

[0014] The flipping mechanism includes a longitudinal guide rail, a picking device and a rotating shaft connecting piece;

[0015] The picking device is rotatably connected to one end of the rotating shaft connecting member, and the other end of the rotating shaft connecting member is slidably connected to the longitudinal guide rail;

[0016] The picking device comprises a first clamping member and a second clamping member which are arranged oppositely and horizontally, a clamping space is formed between the first clamping member and the second clamping member, and the first clamping member and the second clamping member can move toward each other;

[0017] The veneer on the first belt conveyor can be conveyed by the first belt conveyor and inserted into the clamping space. When the veneer reaches the designated position in the clamping space, the first clamping member and the second clamping member move toward each other to clamp the veneer, and the rotating shaft connecting member slides upward from the first position along the longitudinal guide rail to the second position. The picking device drives the veneer to flip 180°, and then the rotating shaft connecting member slides downward along the longitudinal guide rail back to the first position. At this time, the lower surface of the veneer overlaps the conveying surface of the second belt conveyor, and the first clamping member and the second clamping member move back to each other to release the clamping of the veneer. Under the action of friction, the veneer is taken away by the second belt conveyor and conveyed to the fourth station.

[0018] Optionally, the first drying device and / or the second drying device comprises a tunnel furnace, and the second workstation and the fifth workstation are located in a drying chamber of the tunnel furnace.

[0019] A second aspect of the present invention provides a veneer treatment method, the method using any veneer treatment system of the first aspect of the present invention, the method comprising:

[0020] Step S1: putting veneer with a thickness of 0.2 mm to 0.8 mm into a carbonization furnace, wherein the carbonization furnace maintains an oxygen-free environment during operation, and carbonizes the veneer at an operating temperature of 200° C. to 300° C. for a preset time;

[0021] Step S2: after the veneer is cooled to room temperature, spraying water-based fluorinated polyurethane coating evenly on both sides of the veneer, and drying;

[0022] Step S3: placing the veneer between two flat plates and continuously pressing the veneer at a preset pressure to flatten the veneer.

[0023] Optionally, the water-based fluorinated polyurethane coating includes: 30-40 parts of water-based polyurethane resin, 5-10 parts of fluorinated additives, 40-60 parts of water, 2-5 parts of cross-linking agent, 0.5-1 part of thickener, 0.5-2 parts of surfactant, and 0.1-0.5 parts of preservative.

[0024] Optionally, the water-based fluorinated polyurethane coating further comprises a pH regulator, and the pH regulator adjusts the pH value of the water-based fluorinated polyurethane coating to 6.5-7.5.

[0025] Optionally, the carbonization furnace maintains an oxygen-free environment during operation including:

[0026] The carbonization furnace maintains a vacuum environment in the furnace when it is working, or the carbonization furnace is filled with inert gas to exhaust oxygen in the furnace when it is working.

[0027] Optionally, in step S1 , the carbonization time is 30 minutes to 2 hours.

[0028] Optionally, placing the veneer having a thickness of 0.2 mm to 0.8 mm into the carbonization furnace includes: stacking a plurality of veneers in sequence and placing them into the carbonization furnace.

[0029] Optionally, in step S3, the veneer is continuously pressed for a time greater than or equal to 24 hours.

[0030] According to the technical content disclosed in the present invention, the following beneficial effects are achieved:

[0031] The veneer treatment system provided by the present invention is used for veneer modification treatment, and comprises a carbonization furnace. After the veneer is carbonized in the carbonization furnace, the stability of the veneer is improved, the water absorption is reduced, thereby reducing the expansion and contraction amplitude of the wood in a humid environment, making the wood more stable; the carbonized veneer is sequentially conveyed to a first station, a second station, a third station, a fourth station and a fifth station by a belt conveyor; a first spraying device arranged at the first station sprays a chemical onto one side surface of the veneer located on the surface of the belt conveyor; after the one side surface of the veneer is wetted and evenly covered with the chemical, it is conveyed to the second station, and the second station The first drying device at the workstation dries out the moisture in the agent on the surface of one side of the dried veneer to prevent the agent from adhering to the turning mechanism at the third workstation, and also prevents the agent on the surface of the veneer after turning over from adhering to the conveying surface of the belt conveyor. The turning mechanism is arranged at the third workstation, picks up the dried veneer conveyed from the second workstation, and turns the veneer over and places it on the belt conveyor to be conveyed to the fourth workstation; the second spraying device arranged at the fourth workstation sprays the agent on the other side of the veneer; the second drying device arranged at the fifth workstation can dry out the moisture in the agent on the other side of the veneer.

[0032] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0034] Figure 1 It is a schematic structural diagram of the veneer processing system of the present invention.

[0035] Figure 2 It is a schematic diagram of the structure of the turning mechanism of the present invention.

[0036] Figure 3 It is a schematic diagram of the working process of the turning mechanism of the present invention.

[0037] In the figure: 1. carbonization furnace; 2. transfer machine; 3. belt conveyor; 31. first belt conveyor; 32. second belt conveyor; 4. first spraying device; 5. first drying device; 6. turning mechanism; 61. first clamping member; 62. second clamping member; 621. contact member; 622. clamping frame; 63. longitudinal guide rail; 7. second spraying device; 8. second drying device; 91. first board rack; 92. second board rack; 10. veneer; 11. material level detection mechanism. DETAILED DESCRIPTION

[0038] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0039] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0040] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0041] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0042] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] See also Figure 1 In a first aspect, the present invention discloses a veneer processing system, comprising a carbonization furnace 1, a first board rack 91, a belt conveyor 3, and a second board rack 92 which are arranged in sequence according to a process flow.

[0044] The carbonization furnace 1 is used to heat and carbonize the veneer 10; a transfer machine 2 is arranged above the first plate rack 91. The carbonized veneer is stacked on the first plate rack 91 of the transfer machine 2. The transfer machine 2 includes a suction cup and a moving component. The moving component can drive the suction cup to move between the first plate rack 91 and the head of the belt conveyor 3. When the moving component moves to the first plate rack 91, the suction cup moves downward to suck the veneer 10, and then drives the veneer 10 to move to the head of the belt conveyor 3. The suction cup stops adsorption, and the veneer 10 falls on the head of the belt conveyor 3; further, the first plate rack 91 includes a bottom plate, a longitudinal moving mechanism and a material level detection mechanism 11. The material level detection mechanism 11 is located at a certain height above the bottom plate, and is used to detect whether the veneer 10 stacked on the bottom plate has reached a preset height. The longitudinal moving mechanism can drive the bottom plate to move up and down. When the veneer 10 on the bottom plate is transported by the transporter 2, the material level detection mechanism 11 cannot detect the existence of the veneer 10, and the longitudinal moving mechanism can drive the bottom plate to move upward. The veneer 10 moves upward with the bottom plate to a preset height. After the material level detection mechanism 11 detects the existence of the veneer 10, the bottom plate stops moving upward, thereby ensuring that the veneer 10 is at the same height each time the transporter 2 transports the veneer 10, thereby preventing the suction cup from failing to capture the veneer 10.

[0045] The belt conveyor 3 is used to convey the carbonized veneer 10, and includes a first belt conveyor 31 and a second belt conveyor 32 which are arranged opposite to each other and spaced apart in the conveying direction; wherein the first belt conveyor 31 includes a first station and a second station which are arranged in sequence in the conveying direction, and the second belt conveyor 32 includes a fourth station and a fifth station which are arranged in sequence in the conveying direction, and a third station is arranged between the tail of the first belt conveyor 31 and the head of the second belt conveyor 32. When only one belt conveyor 3 is provided in some embodiments, the belt conveyor 3 includes a first station, a second station, a third station, a fourth station and a fifth station which are arranged in sequence in the conveying direction.

[0046] In this embodiment, the description focuses on the case including the first belt conveyor 31 and the second belt conveyor 32. After the transfer machine 2 moves the veneer to the transportation starting point of the first belt conveyor 31, the first belt conveyor 31 transports the veneer 10 to the first station, the second station and the third station in sequence. Among them, the first station is provided with a first spraying device 4, which is used to spray the agent on the veneer 10 located on the surface of the belt conveyor 3; one side of the surface of the veneer 10 is evenly sprayed with the agent and then transported to the second station, and the second station is provided with a first drying device 5, which is a tunnel furnace, and a section of the first belt conveyor 31 passes through the drying chamber of the tunnel furnace. The second station is located in the drying chamber of the tunnel furnace. The veneer 10 passes through the drying chamber under the transportation of the first belt conveyor 31, and the moisture in the agent on the surface of the veneer 10 is dried and evaporated. The dried veneer 10 comes to the third station, and the third station is provided with a turning mechanism 6, which is used to pick up the veneer 10 transported from the second station, turn the veneer 10 over and then place it on the fourth station of the second belt conveyor 32. Of course, it should be noted that when only one belt conveyor 3 is set, the turning mechanism 6 turns the veneer 10 over and then places it on the fourth station of the belt conveyor 3.

[0047] Specifically, combined Figure 2 and Figure 3 The flipping mechanism 6 includes a longitudinal guide rail 63, a picking device and a rotating shaft connecting member; the picking device is rotatably connected to one end of the rotating shaft connecting member, and the other end of the rotating shaft connecting member is slidably connected to the longitudinal guide rail; the picking device includes a first clamping member 61 and a second clamping member 62 that are oppositely and horizontally arranged, and a clamping space is formed between the first clamping member 61 and the second clamping member 62, and the first clamping member 61 and the second clamping member 62 can move toward each other; the first clamping member 61 and the second clamping member 62 have the same structure, so only the structure of the second clamping member 62 is described here, and the second clamping member 62 includes a clamping frame 622 and a contact member 621, and the contact member 621 Fixed on the clamping frame 622, when the picking device picks up the veneer 10, the contact pieces 621 of the first clamping piece 61 and the second clamping piece 62 arranged oppositely clamp the opposite sides of the veneer 10, the contact piece 621 can be spherical or hemispherical, and a plurality of contact pieces 621 are arranged on the clamping frame 622, and there is point-surface contact between the contact piece 621 and the veneer; of course, in some embodiments, the contact piece 621 is strip-shaped, and a plurality of strip-shaped contact pieces 621 are arranged in sequence at intervals, and the side of the contact piece 621 facing the veneer 10 is an arc surface, that is, the contact piece 621 can be a cylindrical strip or a semi-cylindrical strip, and there is line-surface contact between the contact piece 621 and the veneer 10.

[0048] When the veneer 10 on the first belt conveyor 31 is conveyed by the first belt conveyor 31 and inserted into the clamping space, and when the veneer 10 reaches the designated position in the clamping space, the first clamping member 61 and the second clamping member 62 move toward each other to clamp the veneer 10, and the shaft connecting member slides upward from the first position along the longitudinal guide rail to the second position, and the picking device drives the veneer 10 to flip 180°, and then the shaft connecting member slides downward along the longitudinal guide rail back to the first position. At this time, the lower surface of the veneer 10 overlaps the conveying surface of the second belt conveyor 32, and the first clamping member 61 and the second clamping member 62 move back to back to each other to release the clamping of the veneer 10. Under the action of friction, the veneer 10 is taken away by the second belt conveyor 32 and conveyed to the fourth station.

[0049] The fourth station is provided with a second spraying device 7, which is used to spray the agent on the veneer 10 transported from the third station; after the spraying of the agent, the veneer 10 is transported to the fifth station by the second belt conveyor 32, and the fifth station is provided with a second drying device 8, which is also a tunnel furnace. The fifth station is located in the tunnel furnace, and the second drying device 8 is used to dry the agent on the surface of the veneer 10 transported from the fourth station. The veneer 10 passes through the drying chamber of the tunnel furnace under the transportation of the second belt conveyor 32, and the moisture in the agent on the surface of the veneer 10 is dried and evaporated.

[0050] The second plate rack 92 is located at the tail of the second belt conveyor 32. The dried veneers 10 are directly moved to the loading platform of the second plate rack 92 under the action of inertia, and multiple veneers 10 are stacked in sequence. The second plate rack 92 is also provided with a material level detection device. When it is detected that the veneers 10 are stacked to a certain height, a prompt is issued to remind the staff to move the veneers.

[0051] A second aspect of the present invention provides a veneer treatment method, the method using any veneer treatment system of the first aspect of the present invention, the method comprising:

[0052] Step S1: Put the veneer with a thickness of 0.2mm to 0.8mm into the carbonization furnace, the carbonization furnace maintains an oxygen-free environment when working, and carbonizes the veneer at a working temperature of 200℃ to 300℃ for 30 minutes to 2 hours (the thicker the veneer, the longer the carbonization time, and the carbonization time is proportional to the thickness of the veneer). It should be noted that in order to prevent the veneer from deforming due to rapid temperature increase and decrease, the heating rate is preferably 5℃ to 20℃ / min, and the carbonization is completed when it is reduced to room temperature after carbonization for a preset time; the carbonization furnace maintains an oxygen-free environment when working, including: the carbonization furnace maintains a vacuum environment in the furnace when working, or the carbonization furnace is filled with inert gas in the furnace to exhaust oxygen in the furnace when working. In some embodiments,: multiple veneers are stacked in sequence and placed in the carbonization furnace.

[0053] Step S2: After the veneer is cooled to room temperature, the water-based fluorinated polyurethane coating is evenly sprayed on both sides of the veneer, and then dried; it should be noted that the coating amount of the water-based fluorinated polyurethane coating is 50-100 g / m 2 . After spraying, it is immediately dried in a tunnel furnace to prevent the water-based paint from affecting the moisture content of the carbonized veneer and causing bending. The temperature of the tunnel furnace is 40-80°C. The water-based fluorinated polyurethane coating includes: 30-40 parts of water-based polyurethane resin, 5-10 parts of fluorinated additives, 40-60 parts of water, 2-5 parts of cross-linking agent, 0.5-1 part of thickener, 0.5-2 parts of surfactant, and 0.1-0.5 parts of preservative. The water-based fluorinated polyurethane coating also includes a PH regulator, and the PH regulator adjusts the PH value of the water-based fluorinated polyurethane coating to 6.5-7.5.

[0054] The following table shows the components of water-based fluorinated polyurethane coatings and the functions of each component.

[0055]

[0056] After step S1 and step S2, the veneer is usually in a wavy bending state.

[0057] Step S3: Place the veneer between two flat plates and press the veneer at a preset pressure for 24 hours to flatten the veneer. Of course, this step can also use a heavy object to press the veneer for more than 24 hours to slightly flatten it to the extent that it can be used to produce wooden cards.

[0058] The veneer processed in steps S1 to S3 is used to make wooden cards. The process of making wooden cards includes stacking and gluing multiple layers of veneer in sequence, and then cutting the prepared large template into multiple wooden cards.

[0059] Wood card processing example 1:

[0060] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and treated to make wooden cards, wherein the components of the water-based fluorinated polyurethane coating are as follows:

[0061]

[0062] Wood card processing example 2:

[0063] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and treated to make wooden cards, wherein the components of the water-based fluorinated polyurethane coating are as follows:

[0064]

[0065]

[0066] Wood card processing comparison example 1:

[0067] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and wooden cards are made, wherein the water-based fluorinated polyurethane coating is replaced by Dulux Muyun series water-based varnish.

[0068] Wood card processing comparison example 2:

[0069] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and treated to produce wooden cards, wherein the water-based fluorinated polyurethane coating is replaced by Carpoly water-based wood wax oil.

[0070] Wood card processing comparison example 3:

[0071] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and wooden cards are made, wherein the water-based fluorinated polyurethane coating is replaced by Nippon water-based wood wax oil.

[0072] Wood card processing comparison example 4:

[0073] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and treated to make wooden cards, wherein the components of the water-based fluorinated polyurethane coating are as follows:

[0074]

[0075] Comparative Example 5:

[0076] According to a veneer processing method provided in the second aspect of the present invention, veneer is processed and treated to make wooden cards, wherein the components of the water-based fluorinated polyurethane coating are as follows:

[0077]

[0078]

[0079] According to the above formula, 10,000 wooden cards were made. The physical properties of the wooden cards were tested according to the ISO / IEC 7810 test method. The test results are as follows (average values ​​are shown):

[0080]

[0081]

[0082] According to the above comparative examples and embodiments, the wooden card produced by processing the veneer using the veneer processing method of the present invention can improve the physical properties of the finished wooden IC card and achieve better bending resistance and waterproof effects.

[0083] In Comparative Examples 1 to 3, although the veneer treatment method of the present invention was used, since the agent did not use the water-based fluorinated polyurethane coating of the present invention, but used Dulux Muyun series water-based varnish, Carpoly water-based wood wax oil, and Nippon paint water-based wood wax oil respectively, the full card warpage value was large, the adhesion between the layers of veneer was low, the peel strength was poor, and the waterproof effect was poor, and various test indicators were lower than the effect of processing using water-based fluorinated polyurethane coating.

[0084] In Comparative Example 4, the addition ratio of the fluorinated additive is relatively high, resulting in decreased adhesion between the layers of veneer, and the peel strength is decreased compared with Examples 1 and 2, and cannot meet the standard requirements of ISO / IEC 7810.

[0085] In comparative example 5, the addition ratio of polyurethane resin is relatively high, resulting in a large warping degree after the veneer is processed into wood cards, and a decrease in production yield.

[0086] In summary, the main active ingredients of the present invention, polyurethane resin and fluorinated additive, have the best effect within the above ratio. If the polyurethane resin content is too high, the wood card will be more easily bent. If the fluorinated additive content is too high, the adhesion between the layers will be reduced.

[0087] Please note that the technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above embodiments only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, several variations and improvements can be made, which all belong to the scope of protection of the present application. Therefore, the scope of protection of the patent in this application shall be based on the attached claims.

[0088] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A veneer processing system, characterized in that: include: A carbonization furnace, used to heat and carbonize the veneer; A belt conveyor is used to convey the carbonized veneer; the belt conveyor comprises a first station, a second station, a third station, a fourth station and a fifth station arranged in sequence along the conveying direction; A first spraying device, disposed at the first station, for spraying a reagent onto the veneer located on the surface of the belt conveyor; A first drying device, disposed at the second station, for drying the agent on the surface of the veneer; a turning mechanism, arranged at the third station, for picking up the veneer conveyed from the second station, and turning the veneer over and placing it on the belt conveyor to be conveyed to the fourth station; A second spraying device, disposed at the fourth station, for spraying the veneer delivered from the third station with a chemical; The second drying device is arranged at the fifth station and is used for drying the agent on the surface of the veneer transported from the fourth station.

2. The veneer processing system according to claim 1, characterized in that: The belt conveyor comprises a first belt conveyor and a second belt conveyor which are arranged end to end opposite to each other and spaced apart in a conveying direction; The flipping mechanism includes a longitudinal guide rail, a picking device and a rotating shaft connecting piece; The picking device is rotatably connected to one end of the rotating shaft connecting member, and the other end of the rotating shaft connecting member is slidably connected to the longitudinal guide rail; The picking device comprises a first clamping member and a second clamping member which are arranged opposite to each other and horizontally, a clamping space is formed between the first clamping member and the second clamping member, and the first clamping member and the second clamping member can move toward each other; The veneer located on the first belt conveyor can be conveyed by the first belt conveyor and inserted into the clamping space. When the veneer reaches the designated position in the clamping space, the first clamping member and the second clamping member move toward each other to clamp the veneer, and the rotating shaft connecting member slides upward from the first position along the longitudinal guide rail to the second position. The picking device drives the veneer to flip 180°, and then the rotating shaft connecting member slides downward along the longitudinal guide rail back to the first position. At this time, the lower surface of the veneer overlaps the conveying surface of the second belt conveyor, and the first clamping member and the second clamping member move back to each other to release the clamping of the veneer. Under the action of friction, the veneer is taken away by the second belt conveyor and conveyed to the fourth workstation.

3. The veneer processing system according to claim 1 or 2, characterized in that: The first drying device and / or the second drying device comprises a tunnel furnace, and the second workstation and the fifth workstation are located in a drying chamber of the tunnel furnace.

4. A method for treating veneer, the method using the veneer treating system according to any one of claims 1 to 3, characterized in that: The method comprises: Step S1: placing veneer with a thickness of 0.2 mm to 0.8 mm into a carbonization furnace, wherein the carbonization furnace maintains an oxygen-free environment during operation, and carbonizes the veneer at an operating temperature of 200° C. to 300° C. for a preset time; Step S2: after the veneer is cooled to room temperature, spraying water-based fluorinated polyurethane coating evenly on both sides of the veneer, and drying; Step S3: placing the veneer between two flat plates and continuously pressing the veneer at a preset pressure to flatten the veneer.

5. The veneer processing method according to claim 4, characterized in that: The water-based fluorinated polyurethane coating comprises: 30-40 parts of water-based polyurethane resin, 5-10 parts of fluorinated additives, 40-60 parts of water, 2-5 parts of cross-linking agent, 0.5-1 part of thickener, 0.5-2 parts of surfactant, and 0.1-0.5 parts of preservative.

6. The veneer processing method according to claim 5, characterized in that: The water-based fluorinated polyurethane coating also includes a pH regulator, and the pH regulator adjusts the pH value of the water-based fluorinated polyurethane coating to 6.5-7.

5.

7. The veneer processing method according to claim 4, characterized in that: The carbonization furnace maintains an oxygen-free environment during operation including: The carbonization furnace maintains a vacuum environment in the furnace when it is working, or the carbonization furnace is filled with inert gas to exhaust oxygen in the furnace when it is working.

8. The veneer processing method according to claim 4, characterized in that: In the step S1, the carbonization time is 30 minutes to 2 hours.

9. The veneer processing method according to claim 4, characterized in that: The step of placing the veneer having a thickness of 0.2 mm to 0.8 mm into the carbonization furnace comprises: stacking a plurality of veneers in sequence and placing them into the carbonization furnace.

10. The veneer processing method according to claim 4, characterized in that: In the step S3, the time for continuously pressing the veneer is greater than or equal to 24 hours.

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