Coating liquid preparation device and coating liquid preparation method

Abstract

To provide a coating liquid preparation device and a coating liquid preparation method that can reduce a time required for a coating liquid preparation work.SOLUTION: A coating liquid preparation device EA comprises: agitation means 10 which agitates a solvent and a solute in an agitation container 11 into which the solvent and the solute are inputted before agitation, thereby forming a coating liquid CL; and deaeration means 20 which deaerates the coating liquid CL in a deaeration container 21 which accommodates the coating liquid CL formed by the agitation means 10. The agitation container 11 also serves as the deaeration container 21.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a coating fluid preparation device and a coating fluid preparation method. [Background technology]

[0002] 2. Description of the Related Art There is known a coating liquid preparation device that forms a coating liquid by stirring a solvent and a solute placed in a stirring vessel, and then stores the coating liquid in a degassing vessel and degassssing the coating liquid (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2010 / 018771 Summary of the Invention [Problem to be solved by the invention]

[0004] In the paint manufacturing equipment (coating fluid preparation equipment) described in Patent Document 1, a container (mixing container) for mixing the solvent and powder (solute) and a processing tank (degassing container) for vacuum degassing (degassing) the mixed material (coating fluid) are provided separately, making the preparation of the coating fluid complicated and time-consuming.

[0005] An object of the present invention is to provide a coating fluid preparation device and a coating fluid preparation method that can reduce the work time required for preparing a coating fluid. [Means for solving the problem]

[0006] A coating liquid preparation device according to one embodiment of the present invention comprises a stirring means for stirring the solvent and solute in a stirring vessel into which the solvent and solute are introduced before stirring to form a coating liquid, and a degassing means for degassing the coating liquid in a degassing vessel that contains the coating liquid formed by the stirring means, and the stirring vessel also serves as the degassing vessel.

[0007] In a coating fluid preparation device according to one embodiment of the present invention, the stirring vessel may be provided with a tank valve that switches a communication state with the coating fluid outlet pipe so as to prevent the coating fluid from entering the coating fluid outlet pipe connected to the stirring vessel.

[0008] A coating liquid preparation device according to one embodiment of the present invention includes a liquid supply means for supplying the coating liquid degassed by the degassing means from a liquid supply container to the coating means, and the stirring container may serve as both the degassing container and the liquid supply container.

[0009] In a coating liquid preparation device according to one aspect of the present invention, the stirring vessel may be configured to be movable between a degassing position in which the degassing means degasses the coating liquid and a liquid supply position in which the liquid supply means supplies the coating liquid to the coating means.

[0010] In the coating fluid preparation device according to one aspect of the present invention, the fluid supply means may include a pressurizing means for pressurizing an inside of the fluid supply container, and the coating fluid may be supplied to the coating means by pressurizing an inside of the fluid supply container.

[0011] In one embodiment of the coating liquid preparation device of the present invention, the stirring container may include a container body for containing the coating liquid, a lid for closing the container body, and a fixing means for fixing the lid to the container body when the container body is closed.

[0012] A coating liquid preparation method according to one embodiment of the present invention includes a stirring step of forming a coating liquid by stirring the solvent and the solute in a stirring vessel into which the solvent and the solute are introduced before stirring, and a degassing step of degassing the coating liquid formed in the stirring step in a degassing vessel that contains the coating liquid, and in the degassing step, the stirring vessel may be used as the degassing vessel. Effect of the Invention

[0013] According to the present invention, since the stirring vessel also serves as a degassing vessel, the work of preparing the coating liquid can be simplified and the work time can be reduced. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is an explanatory diagram of a coating fluid preparation device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an explanatory diagram of a coating device equipped with a coating liquid preparation device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, one embodiment of the present invention will be described with reference to FIGS. In this embodiment, the X-axis, Y-axis, and Z-axis are mutually orthogonal, the X-axis and Y-axis are axes within a specified plane, and the Z-axis is an axis orthogonal to the specified plane. Furthermore, in this embodiment, when viewed from the front direction of Fig. 1 parallel to the Y-axis is used as a reference, and when indicating directions, "up" is the direction of the Z-axis arrow, "down" is the opposite direction, "left" is the direction of the X-axis arrow, "right" is the opposite direction, "front" is the front direction in Fig. 1 parallel to the Y-axis, and "rear" is the opposite direction.

[0016] The coating liquid preparation apparatus EA includes a mixing means 10 for mixing raw materials such as a dilution solvent DS as a solvent before mixing, a main agent (hereinafter referred to as the main agent) MA in which a powder as a solute is dispersed, and a curing agent CA in a mixing container 11 to form a coating liquid CL, a degassing means 20 for degassing the coating liquid CL in a degassing container 21 that contains the coating liquid CL formed by the mixing means 10, and a liquid supply means 30 for supplying the coating liquid CL to the coating means 50 from a liquid supply container 31 that contains the coating liquid CL degassed by the degassing means 20. The coating fluid preparation apparatus EA of this embodiment includes a feeding means 40 that feeds out the substrate AB, and a coating means 50 that applies the coating fluid CL to the substrate AB fed out by the feeding means 40, forming a coating device EA1 (see FIG. 2).

[0017] The stirring means 10 comprises a stirring vessel 11, a rotary motor 12 as a driving device, and a stirring blade 14 in which a rotating shaft 14A is connected to an output shaft 12A of the rotary motor 12 via a reducer 13, and a blade portion 14B is disposed within the stirring vessel 11.

[0018] The stirring vessel 11 also serves as the degassing vessel 21, and in this embodiment, serves as both the degassing vessel 21 and the liquid supply vessel 31. The stirring vessel 11 in this embodiment is configured to be movable between a raw material measuring position P1, a stirring position where the measured raw materials are stirred by the stirring means 10 to form the coating liquid CL and a stirring and degassing position P2 which is also a degassing position where the coating liquid CL is degassed by the degassing means 20, and a liquid supply position P3 where the coating liquid CL is supplied to the coating means 50 by the liquid supply means 30. The stirring vessel 11 comprises a cart 11A provided with a handle 11B, a vessel body 11C supported by the cart 11A and containing the coating liquid CL, a lid body 11D that is detachably attached to the vessel body 11C with a rotating shaft 14A inserted through an insertion hole formed in the center and that closes the vessel body 11C, a shaft sealing member 11E that seals the rotating shaft 14A inserted through the insertion hole of the lid body 11D, a fixing means 11F (see Figure 2) that fixes the lid body 11D to the vessel body 11C with the vessel body 11C closed, a tank valve 11H that switches the communication state with the coating liquid outlet pipe 11G so as to prevent the coating liquid CL from entering the coating liquid outlet pipe 11G connected to the stirring vessel 11, and a three-way valve 11J provided on the coating liquid outlet pipe 11G. The cover 11D is equipped with a gate valve 11K that separates the inside and outside of the stirring vessel 11, a safety valve 11L that prevents the pressure inside the stirring vessel 11 from exceeding a predetermined value, a compound pressure gauge 11M that measures and displays the pressure inside the stirring vessel 11, and windows 11N and 11P. In this embodiment, the window 11N is used as a light window, and the window 11P is used as a sight window. The cover 11D, shaft seal member 11E, rotary motor 12, reducer 13, and stirring blade 14 are integrated and can move as a unit. The shaft seal member 11E is configured, for example, with a mechanical seal, a magnetic seal, and a gland packing so as to be able to handle both reduced pressure and increased pressure. The fixing means 11F is composed of a bolt 11Q, a nut 11R, and a sealing member (not shown) such as an O-ring or a gasket. The stirring blade 14 has an optimum shape depending on the coating liquid CL, and for example, an anchor blade as shown in FIG. 1 is used.

[0019] 2, the degassing means 20 includes a degassing vessel 21 and a decompression means 22, such as a decompression pump or a vacuum ejector, connected to the gate valve 11K via a pipe 22A. In the present embodiment, the degassing means 20 is configured to perform vacuum degassing. If the coating liquid CL is a solvent-based liquid, a reflux device may be provided to reflux the coating liquid CL, which has been sucked into the pipe 22A by the reduced pressure in the degassing vessel 21, back to the stirring vessel 11. The degassing vessel 21 also serves as the stirring vessel 11, and includes a carriage 11A, a vessel body 11C, a lid 11D, a shaft sealing member 11E, a fixing means 11F, a coating liquid outflow pipe 11G, a tank valve 11H, and a three-way valve 11J.

[0020] The liquid supply means 30 includes a liquid supply container 31, a pressurizing means 32 such as a pressure pump or a turbine connected to the gate valve 11K via a pipe 32A and pressurizing the inside of the liquid supply container 31 with clean compressed air without contamination, a pipe 33 connected to the three-way valve 11J, a filter 34 and a flowmeter 35 provided on the pipe 33, a film thickness meter 36 for measuring either or both of the wet film thickness and the dry film thickness of the coating liquid CL applied to the substrate AB by the coating means 50, and a control means 37 such as a personal computer, a sequencer, a control board, etc. for controlling the film thickness of the coating liquid CL applied to the substrate AB based on the measurement results of the flowmeter 35 and the film thickness meter 36. In the case of this embodiment, the liquid supply means 30 is configured to supply the coating liquid CL to the coating means 50 by pressurizing the inside of the liquid supply container 31. The liquid supply container 31 doubles as the stirring container 11, and includes a carriage 11A, a container body 11C, a lid 11D, a shaft sealing member 11E, a fixing means 11F, a coating liquid outflow pipe 11G, a tank valve 11H, and a three-way valve 11J. In this embodiment, the control means 37 is configured to control the pressurizing means 32 electrically or by pressure based on the measurement results of the flow meter 35 and the film thickness meter 36, thereby controlling the pressure inside the stirring vessel 11 together with the precision regulator, and thereby controlling the film thickness of the coating liquid CL applied to the substrate AB.

[0021] The pay-out means 40 includes a pay-out roller 42 that is rotationally driven by a rotary motor 41 as a driving device, and a coating roller 44 that is rotationally driven by a rotary motor 43 as a driving device. The substrate AB paid out from the pay-out roller 42 is coated with the coating liquid CL while being supported by the coating means 50 and the coating roller 44. In addition to the above-mentioned components, the coating apparatus EA1 also includes a drying means (dryer), a second pay-out means that pays out the substrate to be bonded to the coating film CF made of the coating liquid CL, a laminating means, and a winding means, but a description of these components will be omitted here.

[0022] The operation of the coating apparatus EA1 equipped with the above-described coating fluid preparation apparatus EA will now be described. First, the operator moves the container body 11C to the measurement position P1 as shown in Fig. 1. Next, after the operator closes the tank valve 11H, the operator or a charging means such as a hopper or a raw material charging pipe charges the dilution solvent DS, the base agent MA, and the curing agent CA into the container body 11C of the stirring container 11. After that, the operator moves the container body 11C to the stirring and degassing position P2. Next, the operator or a lifting and conveying means (not shown) such as an elevator, an articulated robot, or an adsorption conveying machine lowers the lid body 11D integrated with the stirring blades 14, etc., and closes the container body 11C with the lid body 11D as shown in Fig. 2.

[0023] Then, the operator fixes the lid body 11D to the container body 11C with the fixing means 11F. However, this does not apply to the case where the coating liquid CL is not pressurized and supplied from the stirring container 11 to the coating means 50 after this. Next, the operator connects the pipe 22A to the gate valve 11K, and then opens the gate valve 11K. After that, the operator operates the degassing means 20 to drive the pressure reducing means 22, and reduces the pressure in the stirring container 11 to a predetermined pressure while checking the compound pressure gauge 11M. Next, the stirring means 10 drives the rotary motor 12, which rotates the stirring blade 14 under predetermined conditions via the reducer 13. As a result, stirring and degassing are efficiently performed in the stirring container 11, and the coating liquid CL from which gas and bubbles have been removed is formed. At this time, the operator can visually check the liquid surface in the stirring container 11 through the window 11P provided in the lid body 11D, and can check the state of the liquid being drawn into the rotating shaft 14A of the stirring blade 14, the presence or absence of bubbles generated, and the like.

[0024] After starting the stirring and degassing, the worker waits for a predetermined time to elapse, and then checks whether or not air bubbles are generated through the window 11P. If no air bubbles are present, the worker operates the stirring means 10 and the degassing means 20 to stop the driving of the rotary motor 12 and the decompression means 22. When stopping the driving of the rotary motor 12 and the decompression means 22, they may be automatically stopped using an inverter or the like. Then, the worker releases the connection between the gate valve 11K and the piping 22A, and then moves the stirring vessel 11 to the liquid supply position P3 as shown in FIG. 2. Next, the worker connects the piping 33 to the three-way valve 11J, and opens the tank valve 11H with the three-way valve 11J switched to the air vent port, and after venting the air in the coating liquid outlet pipe 11G, switches the three-way valve 11J to the piping 33 side. Then, the worker connects the piping 32A to the gate valve 11K.

[0025] Next, when the operator loads the substrate AB on the feeding means 40 as shown in FIG. 2 and then inputs a signal for performing provisional coating via an operation means (not shown) such as an operation panel or a personal computer, the feeding means 40 drives the rotary motors 41 and 43 to feed the substrate AB. Then, the liquid supply means 30 drives the pressurizing means 32, and supplies a predetermined amount of the coating liquid CL to the coating means 50 by pressurizing the inside of the stirring vessel 11. As a result, the coating liquid CL is provisionally applied to the substrate AB, and a sheet AS is formed in which a coating film CF made of the coating liquid CL is temporarily laminated. Next, a correction coefficient is set based on the output data of the flowmeter 35 and the film thickness meter 36 obtained during provisional coating, and the correction coefficient is input via the operation means so that the coating film CF has a desired thickness. Thereafter, the operator performs provisional coating again by operating in the same manner as above, and after confirming that the coating film CF has a desired thickness, a signal for starting automatic operation is input via the operation means, and the mode is switched to an automatic operation mode in which the feeding of the substrate AB and the application of the coating liquid CL are automatically performed. While the automatic operation is being performed, the operator puts the dilution solvent DS, the base agent MA, and the curing agent CA into another stirring vessel 11 in order to prepare the next stirring vessel 11 to which the coating liquid CL will be supplied, and then stirs and degasses the inside of the other stirring vessel 11 in the same manner as described above.

[0026] Then, when the coating liquid CL continues to be applied from the coating means 50 to the substrate AB by the automatic operation, and the detection means configured with an imaging means such as a camera or a projector, or various sensors such as an optical sensor or an ultrasonic sensor detects that the coating liquid CL in the stirring vessel 11 falls below the lower limit of the liquid level, the liquid supply means 30 and the delivery means 40 stop driving the pressurizing means 32 and the rotary motors 41, 43. Next, the operator closes the three-way valve 11J, the gate valve 11K, and the tank valve 11H, and then disconnects the three-way valve 11J, the gate valve 11K, and the pipes 33, 32A. Then, the operator moves the stirring vessel 11 to a predetermined standby position and makes the stirring vessel 11 standby for the next coating liquid supply. Note that, at the standby position, the coating liquid CL remaining in the stirring vessel 11 may be discharged, or the inside of the stirring vessel 11 may be cleaned. Next, the operator moves another stirring vessel 11, which will next supply the coating liquid CL, to the liquid supply position P3, and then connects the pipes 33, 32A to the three-way valve 11J and the gate valve 11K in the same manner as described above, and then the same operations as described above are repeated.

[0027] According to the embodiment described above, the stirring vessel 11 also serves as the degassing vessel 21, so that the preparation work of the coating liquid CL can be simplified and the work time can be reduced. In addition, since the stirring vessel 11 also serves as the degassing vessel 21, it is not necessary to remove the lid 11D from the vessel body 11C and replace it with another lid for degassing, and this makes it possible to prevent foreign matter from entering the vessel.

[0028] In addition, since the stirring vessel 11 is used as the degassing vessel 21 and the coating liquid CL formed by the stirring means 10 is degassed while still contained in the stirring vessel 11, the device configuration can be consolidated and the work space can be reduced. Moreover, since stirring and degassing can be performed in a single work process, human operation errors can be suppressed. Furthermore, since the stirring vessel 11 is provided with the tank valve 11H, it is possible to prevent the coating liquid CL from entering the coating liquid outflow pipe 11G, making it impossible to stir the coating liquid. Furthermore, since the stirring vessel 11 serves both as the degassing vessel 21 and the liquid supply vessel 31, the device configuration can be further consolidated and the working space can be further reduced. In addition, since the coating liquid CL is supplied to the coating means 50 by pressurizing the inside of the liquid supply container 31 using the pressurizing means 32, pulsation caused by the pump, such as that which occurs when the coating liquid CL is supplied by a liquid supply pump, can be prevented from being transmitted to the coating means 50. Furthermore, since the stirring vessel 11 is provided with the fixing means 11F for fixing the lid body 11D, when the inside of the liquid supply vessel 31 is pressurized by the pressurizing means 32, it is possible to prevent the lid body 11D from coming off the vessel body 11C.

[0029] As described above, the best configuration, method, etc. for carrying out the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, the present invention is mainly illustrated and described with respect to a specific embodiment, but a person skilled in the art can make various modifications to the above-described embodiment in terms of the shape, material, number, and other detailed configuration of each element constituting the device without departing from the scope of the technical idea and purpose of the present invention. In addition, the description of the above-disclosed shapes, materials, etc., which are limited, is illustratively described to facilitate understanding of the present invention, and does not limit the present invention, so that the description of the names of the components in which some or all of the limitations on the shapes, materials, etc. of each element constituting the device are removed is included in the present invention.

[0030] For example, the stirring means 10 may be configured to include a connecting means such as a magnetic coupling or a jaw coupling that can detachably connect one end of the rotating shaft 14A divided into upper and lower halves, and the rotating motor 12 and the reducer 13 can be separated from the lid 11D, the shaft sealing member 11E, and the stirring blade 14 by disconnecting the connecting means. In this case, the connecting means may be provided above or below the lid 11D, and the rotating motor 12 and the reducer 13 can be separated from the lid 11D, the shaft sealing member 11E, and the stirring blade 14 above the lid 11D, or below the lid 11D. The connecting means may be configured to be automatically connected or manually connected. The stirring means 10 may move the stirring vessel 11 to the measurement position P1, the stirring and degassing position P2, and the liquid supply position P3 by a moving means such as an articulated robot or a belt conveyor. The stirring vessel 11 does not have to double as the liquid supply vessel 31, and may be self-propelled by driving the wheels of the carriage 11A with an air-assisted auxiliary function or a rotary motor as a wheel drive function. The fixing means 11F may be configured to fix the lid body 11D to the container body 11C using a gripping means such as a mechanical chuck or a chuck cylinder, magnetic force, etc., or the bolt 11Q may be suspended from the container body 11C by a string, belt, hinge, etc. The stirring blade 14 may be inseparably supported on the output shaft of the reducer 13, for example, by welding, or may be detachably supported by a screw, a boss, or the like.

[0031] The degassing means 20 may be configured to stop driving the pressure reducing means 22 when the absence of air bubbles in the stirring vessel 11 is detected by a detection means composed of an imaging means such as a camera or a projector, or various sensors such as an optical sensor or an ultrasonic sensor. The degassing means 20 may be configured to perform thermal degassing, ultrasonic degassing, or centrifugal degassing instead of or in combination with vacuum degassing, and in the case of room temperature degassing, a heating means such as a coil heater or a heat pipe for heating the coating liquid CL may be provided before the circulation device, and in the case of ultrasonic degassing, an ultrasonic application means having an electrostrictive vibrator such as a piezoelectric element or a magnetostrictive vibrator such as a nickel vibrator for applying ultrasonic waves to the coating liquid CL may be provided.

[0032] The liquid supply means 30 may include a liquid supply pump provided on a pipe 33 in place of or in addition to pressurized liquid supply by the pressurizing means 32, and the coating liquid CL may be supplied from the liquid supply container 31 to the coating means 50 by the pump. The liquid supply means 30 may perform agitation and liquid supply by supplying the coating liquid CL to the coating means 50 while driving the rotary motor 12 to agitate the coating liquid CL with the agitating blades 14 . The liquid supply means 30 may use the control means 37 to determine the work ratio between the pressurizing means 32 and the liquid supply pump based on the output data of the flow meter 35 and the film thickness meter 36, thereby controlling the film thickness of the coating liquid CL applied to the substrate AB. The liquid supply means 30 does not necessarily have to be equipped with one of the flow meter 35 and the film thickness meter 36. In this case, the film thickness of the coating liquid CL applied to the substrate AB may be controlled by the control means 37 controlling the pressurizing means 32 or the pump, or by the precision regulator controlling the pressure inside the stirring vessel 11, based on the measurement result of the other of the flow meter 35 and the film thickness meter 36.

[0033] The unwinding means 40 may unwind the substrate AB from a substrate AB that has been folded, for example, in a fanfold, without being wound up, or may be equipped with a recovery roller as a recovery means for rolling up and recovering the formed sheet AS, or a recovery means may be adopted that recovers the sheet AS without being wound up, for example, by folding it in a fanfold, shredding it with a shredder or the like, or by randomly piling it up, or no recovery means may be adopted. Furthermore, the stirring / degassing position P2 and the liquid supply position P3 may be the same position, and stirring / degassing and liquid supply may be performed at that position, or stirring / degassing and liquid supply may be performed.

[0034] The metering position P1 and the stirring / deaeration position P2 may be the same position. In this case, the pipe 22A may be connectable to the gate valve 11K at the same position. The stirring position and the degassing position may be different positions, and stirring may be performed at the stirring position and then degassing may be performed at the degassing position.

[0035] The type, classification, composition, etc. of the solvent, solute, and coating liquid CL are not particularly limited. For example, the solvent may be a catalyst or a reaction initiator for a release agent such as silicone, a hardener for a paint, or a solid or liquid other than a hardener. The solute may be a base agent for a release agent such as silicone, a base agent for a paint, or a liquid other than the base agent. The dilution solvent DS may be any liquid such as water or a solvent that does not remain in the coating film CF after drying by heating. The coating liquid CL may be, for example, an adhesive, a pressure sensitive adhesive, or a release agent.

[0036] The material, type, shape, etc. of the substrate AB and the sheet AS are not particularly limited. For example, the sheet AS may be of an adhesive form such as pressure-sensitive adhesive or heat-sensitive adhesive. The sheet AS may be of any type, such as a two-layered one in which the substrate AB and an adhesive layer are laminated, a three-layered one or more layers in which one or more intermediate layers are laminated between the substrate AB and the adhesive layer, a two-layered one or more layers in which one or more cover layers are laminated on the upper surface of the substrate AB, or a one in which the substrate AB, intermediate layer, or cover layer are provided in a peelable manner.

[0037] The means and steps in the present invention are not limited in any way as long as they can perform the operations, functions, or steps described for those means and steps, and are not limited at all to the components and steps of a mere embodiment shown in the above embodiment. For example, the stirring vessel may be any vessel into which the solvent and solute before stirring are charged and which also serves as a degassing vessel, and is not limited in any way as long as it is within the technical scope in light of the common general technical knowledge at the time of filing (the same applies to other means and steps).

[0038] The driving equipment in the above-described embodiments may be electric equipment such as a rotary motor, an elevator, a suction conveyor, a single-axis robot, or a multi-joint robot having joints on two or more axes, or actuators such as an air cylinder, a hydraulic cylinder, a rodless cylinder, or a rotary cylinder, or a direct or indirect combination of these may also be used. In the above-described embodiments, when a rotating member such as a roller is used, a driving device for rotating the rotating member may be provided, the surface of the rotating member or the rotating member itself may be made of a deformable material such as rubber or resin, the surface of the rotating member or the rotating member itself may be made of a non-deformable material, the surface of the rotating member may be subjected to a surface treatment, or other members such as a rotating or non-rotating shaft or blade may be used instead of the roller. [Explanation of symbols]

[0039] EA...Painting liquid dispensing device 10...Mixing means 11...Mixing vessel 11C…Container body 11D…Lid body 11F…Fixing means 11G…Coating fluid outflow pipe 11H…Tank valve 20...Vacuuming means 21… Degassing vessel 30...Liquid supply means 31...Liquid supply container 32...Pressure means 50...Application means CL…Coating liquid P2: Mixing and degassing position (mixing position, degassing position) P3…Liquid supply position

Claims

1. a stirring means for stirring the solvent and the solute in a stirring vessel into which the solvent and the solute are charged before stirring to form a coating liquid; a degassing means for degassing the coating liquid in a degassing container that contains the coating liquid formed by the stirring means, The coating liquid preparing device is characterized in that the stirring vessel also serves as the degassing vessel.

2. The coating fluid preparation device according to claim 1, characterized in that the stirring vessel is provided with a tank valve that switches a communication state with the coating fluid outlet pipe so as to prevent the coating fluid from entering the coating fluid outlet pipe connected to the stirring vessel.

3. a liquid supply means for supplying the coating liquid from a liquid supply container that contains the coating liquid degassed by the degassing means to the coating means, 3. The coating fluid preparation device according to claim 1, wherein the stirring vessel serves both as the degassing vessel and the liquid supply vessel.

4. The coating fluid preparation device according to claim 3, characterized in that the stirring vessel is configured to be movable between a degassing position in which the degassing means degasses the coating fluid and a fluid supply position in which the fluid supply means supplies the coating fluid to the coating means.

5. 4. The coating fluid preparation device according to claim 3, wherein the fluid supplying means includes a pressurizing means for pressurizing the inside of the fluid supply container, and the coating fluid is supplied to the coating means by pressurizing the inside of the fluid supply container.

6. The coating liquid preparation device according to claim 5, characterized in that the stirring container comprises a container body for containing the coating liquid, a lid for closing the container body, and a fixing means for fixing the lid to the container body when the container body is closed.

7. a stirring step of stirring the solvent and the solute in a stirring vessel into which the solvent and the solute are charged before stirring to form a coating liquid; a degassing step of degassing the coating liquid in a degassing container containing the coating liquid formed in the stirring step; The coating liquid preparation method, wherein the degassing step uses the stirring vessel as the degassing vessel.

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