Coating component and coating method

Abstract

To recover and remove an excess liquid, such as a liquid reservoir, efficiently without using a jig, etc., to reduce variations in thickness of films of molded products.SOLUTION: A coating component 100 is a component in which a component body 10 is coated with a coating liquid and has an excess liquid recovery part 20 which is partially connected to the component body 10 and removed after suctioning an excess portion of the coating liquid and hardening.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a coating part and a coating method.

Background Art

[0002] Patent Document 1 discloses a film forming method in which, in a method of forming a film by dip coating, a liquid pool of a coating liquid generated on a substrate to be coated is removed, and a film having a uniform thickness is formed with a high yield without deteriorating the surface smoothness of the film.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the method of Patent Document 1, for the liquid pool generated after draining by dip coating, an excess coating liquid (such as a liquid pool) is attracted using a coating liquid attracting member fixedly installed in a coating liquid tank for storing the coating liquid. Therefore, in the method of Patent Document 1, if the substrate shape is simple, it is considered that the excess liquid can be sucked by a jig such as a coating liquid attracting member.

[0005] However, the structural parts and interior parts of vehicles such as automobiles have different shapes for each part and often have a complicated shape with protrusions or the like. Therefore, the formation positions of the liquid pools are formed at a plurality of different positions for each part, and depending on the part shape, they are formed at the inner position of the part. Therefore, in the recovery method using a jig as in Patent Document 1, jigs corresponding to each part must be prepared for each part, and there is also a possibility that the excess liquid cannot be completely recovered depending on the formation position of the liquid pool, resulting in poor production efficiency.

[0006] At least one embodiment of the present invention has been made in view of the above circumstances. Specifically, it is to efficiently collect and remove surplus liquid such as liquid pools without using jigs or the like, and reduce the variation in the film thickness of molded products.

Means for Solving the Problem

[0007] A coating part in which a coating liquid is coated on a part body, and a surplus liquid recovery part that is formed by connecting a part to the part body and sucks and removes the surplus liquid of the coating liquid after hardening.

[0008] A coating method of immersing the part body of the coating part in a coating liquid for coating, wherein the pulling-up speed of the surplus liquid recovery part from a liquid tank storing the coating liquid is 0.01 times or more and 0.5 times or less the pulling-up speed of the part body from the liquid tank.

Effect of the Invention

[0009] According to at least one embodiment of the present invention, it is possible to efficiently collect and remove surplus liquid such as liquid pools without using jigs or the like, and reduce the variation in the film thickness of molded products.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6A

Figure 6B

Figure 6C

Figure 6D

Figure 6E

Figure 6F

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. The embodiments shown here are examples for embodying the technical idea of the present invention and do not limit the present invention. In addition, all other possible embodiments, examples, operation techniques, etc. that can be considered by those skilled in the art without departing from the gist of the present invention are included in the scope and gist of the present invention, and are included in the invention described in the claims and its equivalent scope.

[0012] Furthermore, the drawings attached to this specification may be schematically represented with changes from the actual objects in terms of scale, aspect ratio of vertical and horizontal dimensions, shape, etc. for the sake of illustration and easy understanding, but this is only an example and does not limit the interpretation of the present invention.

[0013] In the following description, when ordinal numbers such as "first" and "second" are used for explanation, unless otherwise specified, they are used for convenience only and do not define any order.

[0014] As shown in FIG. 1, the coating component 100 according to the present embodiment includes a component main body 10 and a surplus liquid recovery part 20 formed by connecting a part of the component main body 10. The coating component 100 is a structural component of a vehicle such as an automobile, and is immersed in a liquid tank 200 storing a coating liquid, and the coating liquid is coated by a dip coating method (see FIGS. 6A to 6F).

[0015] The component main body 10 and the surplus liquid recovery part 20 of the coating component 100 are integrally formed by a 3D printer. The molding method of the coating component 100 by the 3D printer can select an optimal molding method in view of the constituent material, shape, etc. of the component main body 10. Further, the forming material of the coating component 100 is not particularly limited as long as it is a material suitable for molded products such as metal materials and resin materials and can be used in a 3D printer.

[0016] <Component main body> The component main body 10 is the main body part of the coating component 100. As shown in FIG. 1, the component main body 10 has a bracket 11 used as a fixing part when fixing to other structures or other components.

[0017] Since the component main body 10 is formed by laminating materials with a 3D printer, fine steps can be formed on the component surface. Therefore, in order to improve the shape accuracy, the component main body 10 is smoothed by applying a coating liquid to fill the stepped portions. As shown in FIG. 1, when the component main body 10 is a molded product, many have a complex shape including protrusions and the like rather than a simple shape, and a plurality of liquid accumulation parts X (regions of the alternate long and short dash line in the figure) can be formed. The coating component 100 according to the present embodiment can suck and remove the surplus liquid after dip coating by integrally forming the surplus liquid recovery part 20 near the formation location of the liquid accumulation part X by the surplus liquid shown in FIG. 1.

[0018] <Surplus liquid recovery section> The surplus liquid recovery section 20 recovers the surplus liquid from the dip coating of the component body 10. The surplus liquid recovery section 20 includes a connection section 21 composed of a plurality of rod-like bodies 21a having one end connected to the component body 10, and a recovery section 22 that recovers the surplus liquid of the coating liquid of the component body 10 through the other end of the connection section 21, in order to recover the surplus liquid by utilizing the action of capillary phenomenon.

[0019] One or more surplus liquid recovery sections 20 are formed at locations in the component body 10 where surplus liquid is to be recovered, that is, locations where a liquid accumulation section X is likely to be formed or locations where liquid accumulation is not desired. The surplus liquid recovery section 20 sucks and recovers the surplus liquid of the component body 10 during dip coating, and is removed after the coating liquid is cured.

[0020] 〈Connection section〉 The connection section 21 arranges a plurality of rod-like bodies 21a at a predetermined interval. The rod-like body 21a is a rod material having a circular or elliptical cross-sectional shape. The connection section 21 can guide the surplus liquid from the component body 10 to the recovery section 22 through the gap 21b between adjacent rod-like bodies 21a by the action of capillary phenomenon.

[0021] As shown in FIG. 3, the movement mechanism of the surplus liquid by the connection section 21 is such that the surplus liquid moves to the recovery section 22 by capillary phenomenon through the gap 21b of the connection section 21. FIG. 3 shows only the surplus liquid of the component body 10, and the state in which the surplus liquid in the upper figure moves to the recovery section 22 as shown in the lower figure through the gap 21b is shown. In the present invention, the force acting on the connection section 21 (the force acting during the movement of the surplus liquid: capillary force) can be obtained by the following formula 1.

[0022] Formula 1: F = γLn + ρg Here, "F" is the force acting on the connection section 21, "γ" is the surface tension, "L" is the peripheral length of the rod-like body 21a, "n" is the number of rod-like bodies 21a, "ρ" is the density of the surplus liquid, and "g" is the gravitational acceleration.

[0023] The connecting part 21 is composed of a combination of a plurality of rod-shaped bodies 21a. From the viewpoints of the fluidity of surplus liquid (ease of suction of the recovery part 22) due to surface tension (capillary force) and the ease of removal of the surplus liquid recovery part 20 (ease of excision of the connecting part 21), the diameter of the rod-shaped body 21a is preferably 1 mm or less. The smaller the diameter of the connecting part 21, the easier it is for the action of capillary force to be exerted. On the other hand, if it is too thin, the connecting part 21 may break during the manufacturing process and the surplus liquid recovery part 20 may fall off. Therefore, the lower limit is preferably set to a dimension that can maintain the strength of the surplus liquid recovery part 20.

[0024] From the viewpoint of the mobility of surplus liquid to the recovery part 22 due to capillary force, the interval between the rod-shaped bodies 21a constituting the connecting part 21 is preferably 1 mm or less. As shown in FIG. 2, the interval between the rod-shaped bodies 21a of the connecting part 21 is the interval in the adjacent direction of the rod-shaped bodies 21a and corresponds to the width of the gap 21b. The smaller the width dimension of the gap 21b, the easier it is for the action of capillary force to be exerted.

[0025] Considering the mobility of surplus liquid due to capillary action, the total length of the connecting part 21 is preferably 5 mm or more and 20 mm or less in order to prevent or make it difficult for a liquid bridge to occur due to the movement of surplus liquid between the component body 10 and the surplus liquid recovery part 20.

[0026] As shown in FIG. 4, the interval between the rod-shaped bodies 21a of the connecting part 21 (the width of the gap 21b) is preferably gradually narrowed from the component body 10 side toward the recovery part 22. Thereby, a liquid guiding structure can be formed in which the flow velocity of the surplus liquid increases as the capillary force acting on the gap 21b goes toward the recovery part 22 side. In FIG. 4, the shape in which two gaps 21b gradually narrow from the base end side (component body 10 side) to the tip end side (recovery part 22 side) of the three rod-shaped bodies 21a is shown. However, from the viewpoint of improving the movement speed of the surplus liquid, the movement speed can be improved if at least one of the gaps 21b has a gradually narrowed shape.

[0027] One or more connection parts 21 can be provided for the recovery part 22 to move the surplus liquid to the recovery part 22. However, by providing a plurality of connection parts 21 for the recovery part 22, the surplus liquid can be moved to the recovery part 22 more efficiently.

[0028] Also, from the perspective of recoverability, the connection part 21 is preferably arranged in pairs with the liquid pool part X. However, in the case where the formation location of the liquid pool part X is relatively close, it may also be configured such that one connection part 21 moves the surplus liquid of a plurality of surrounding liquid pool parts X to the recovery part 22.

[0029] 〈Recovery part〉 The recovery part 22 is connected to the other end of the connection part 21 and recovers the surplus liquid of the component body 10 through the connection part 21. The shape of the recovery part 22 is not particularly limited as long as it can hold the surplus liquid flowing through the connection part 21.

[0030] As shown in FIG. 2, the recovery part 22 is preferably arranged in a direction along the vertical direction (the direction along the lifting direction of the component body 10) or obliquely downward with respect to the connection part 21 so that gravity and capillary action can be effectively exerted. Note that the recovery part 22 is not limited to the position shown in FIG. 2 (the position below the connection part 21 in the vertical direction) as long as it is a position where the surplus liquid can be recovered by the action of capillary action through the connection part 21.

[0031] The length of the recovery part 22 in the lifting direction of the component body 10 with respect to the coating liquid is 5 mm or more and 20 mm or less. Thereby, the surplus liquid around the connection part 21 can be sufficiently recovered, and the processing time of dip coating is not lengthened unnecessarily, so that a decrease in production efficiency can be prevented.

[0032] In the coating component 100, the bracket 11 of the component body 10 is structurally of relatively low strength compared to other parts. Therefore, if the surplus liquid recovery part 20 is provided on the bracket 11, when removing the surplus liquid recovery part 20, there is a possibility of causing damage to the bracket 11. Therefore, in order to avoid damage to the bracket 11, the surplus liquid recovery part 20 is preferably formed at a location other than the bracket 11 on the component body 10.

[0033] Thus, since the coating component 100 has the surplus liquid recovery part 20, the surplus liquid can be sucked and recovered without using a jig or the like. Therefore, the process of removing the surplus liquid such as the liquid accumulation part X becomes unnecessary. Furthermore, the coating component 100 can efficiently recover the surplus liquid such as the liquid accumulation by forming the surplus liquid recovery part 20 at a location where the liquid accumulation is likely to be formed or at a location where the liquid accumulation is not desired, so that the variation in film thickness can be suppressed and the shape accuracy after coating can be maintained.

[0034] Note that the surplus liquid recovery part 20 is configured such that the connecting part 21 is composed of a plurality of rod-shaped bodies 21a and the surplus liquid is recovered using the capillary phenomenon. However, since the surplus liquid recovery part 20 only needs to be able to recover the surplus liquid such as the liquid accumulation part X, it may be composed of the recovery part 22 connected to one rod-shaped body 21a. In the case of such a configuration, when the component body 10 is lifted from the liquid tank 200 of the coating liquid, the surplus liquid can flow along the connecting part 21 to the recovery part 22 by gravity and be recovered.

[0035] Next, the coating method according to the present embodiment will be described.

[0036] The coating method according to the present embodiment is a processing operation when dip-coating and coating the aforementioned coating component 100. As shown in FIG. 5, the coating method includes an immersion step S1, a first lifting step S2, a stationary step S3, a second lifting step S4, a curing step S5, and a removal step S6.

[0037] Note that the coating method according to this embodiment may include other steps as necessary in addition to the steps shown in FIG. 5. Also, the order of implementation of each step included in the coating method can be changed within the scope not departing from the gist of the present invention. Furthermore, in each of the diagrams shown in FIGS. 6A to 6F, the coating liquid to be coated on the component body 10 is not shown in consideration of ease of viewing of the drawings, etc., but actually, the coating liquid is coated on the surface of the component body 10 after the immersion step S1.

[0038] As a prior preparation, the coating component 100 integrally forms the component body 10 and the surplus liquid recovery part 20 using a 3D printer as described above.

[0039] 〈Immersion step〉 The immersion step S1 is a step of immersing the coating component 100 in a liquid tank 200 storing a coating liquid as shown in FIG. 6A. In the immersion step S1, the coating component 100 is entirely immersed in the liquid tank 200.

[0040] 〈First lifting step〉 The first lifting step S2 is a step of pulling out the component body 10 from the liquid tank 200 as shown in FIG. 6B, and the component body 10 is pulled out until the liquid accumulation part X of the component body 10 reaches the position immersed in the liquid tank 200. The first lifting step S2 may be lifted in a direction perpendicular to the liquid surface of the liquid tank, but in order to form the liquid accumulation part X of the component body 10 at the end of the component, for example, it is preferable to lift the component in a state inclined about 60° to 70° with respect to the vertical direction.

[0041] 〈Resting step〉 The stationary step S3 is a step of stopping the lifting operation of the component body 10 lifted in the first lifting step S2 and holding (stationary) it for a predetermined time. In the stationary step S3, the stationary time in the state where the surplus liquid recovery part 20 is lifted from the liquid tank 200 is preferably 1 minute or more and 30 minutes or less. In the stationary step S3, in order to hold the stationary state of the component body 10 only within the range of the stationary time, the coating liquid easily slides down due to surface tension, and the film thickness of the entire component body 10 can be stabilized. Note that the stationary time of the stationary step S3 can be appropriately set within the above time range according to the viscosity of the coating liquid, the component size, etc.

[0042] 〈Second Lifting Step〉 The second lifting step S4 is a step of lifting again the component body 10 that has been held in the stationary state for a predetermined time in the stationary step S3 and lifting the entire component body 10 from the liquid tank 200, as shown in FIG. 6D. The lifting angle of the second lifting step S4 may be the same as the lifting angle of the first lifting step S2.

[0043] The lifting speeds of the first lifting step S2 and the second lifting step S4 may be the same speed, but it is preferable that the speed of the second lifting step S4 is slower than the speed of the first lifting step S2. Specifically, the lifting speed of the surplus liquid recovery part 20 from the liquid tank 200 storing the coating liquid (the lifting speed of the second lifting step S4) is preferably 0.01 times or more and 0.5 times or less the lifting speed of the component body 10 from the liquid tank 200 (the lifting speed of the first lifting step S2). Thereby, by making the immersion time of the surplus liquid recovery part 20 longer than the immersion time of the component body 10, the surplus liquid easily moves to the liquid tank 200 due to the surface tension acting on the liquid tank 200 and the surplus liquid recovery part 20, and the effect of suppressing the formation of the liquid pool part X can be obtained. Note that the lifting speed of the second lifting step S4 can be appropriately set according to the viscosity of the coating liquid, the component size, etc. within the above range.

[0044] 〈Curing Step〉 As shown in FIG. 6E, the hardening step S5 is a step of hardening the coating liquid coated on the coating part 100 that has been entirely lifted from the liquid tank 200 in the second lifting step S4. In the hardening step S5, an appropriate hardening treatment (for example, a hardening treatment using electromagnetic waves such as UV, a hardening treatment by drying such as blow drying, heat drying, or natural drying) can be carried out according to the coating liquid used.

[0045] 〈Removal Step〉 As shown in FIG. 6F, the removal step S6 is a step of removing the surplus liquid recovery part 20 from the hardened coating part 100. The surplus liquid recovery part 20 can be removed by cutting the connection part between the connection part 21 and the part main body 10.

[0046] Note that after the removal step S6, the cut part of the part main body 10 with the connection part 21 can be polished by adding a polishing process such as deburring as necessary.

[0047] Also, in the coating method according to the present embodiment, when there are a plurality of surplus liquid recovery parts 20 formed on the coating part 100, the first lifting step S2, the stationary step S3, and the second lifting step S4 may be carried out for each surplus liquid recovery part 20. That is, when three surplus liquid recovery parts 20 are formed on the part main body 10 from the upstream side to the downstream side in the lifting direction, the above-mentioned steps can be carried out in the order of the surplus liquid recovery part 20 first drawn out from the liquid tank 200, the surplus liquid recovery part 20 then drawn out from the liquid tank 200, and the surplus liquid recovery part 20 finally drawn out.

[0048] As described above, the coating part 100 according to the present embodiment is a part on which a coating liquid is coated on the part main body 10, and a surplus liquid recovery part 20 is formed by connecting a part to the part main body 10, which sucks and hardens the surplus liquid of the coating liquid and is then removed.

[0049] With such a configuration, surplus liquid can be suctioned and recovered without using jigs or the like, eliminating the need for a process of removing surplus liquid from the liquid reservoir X or the like. Further, if the surplus liquid recovery section 20 is formed at locations where liquid reservoirs are likely to form or where liquid reservoirs are not desired, surplus liquid such as liquid reservoirs can be efficiently recovered, suppressing variations in film thickness and maintaining the shape accuracy after coating.

[0050] The coating component 100 according to this embodiment is a component in which a coating liquid is coated on the component body 10. The component body 10 has a connection portion 21 formed by arranging a plurality of rod-shaped bodies 21a, one end of which is connected to the component body 10, at intervals that allow surplus liquid to move by capillary action, and a recovery portion 22 that recovers surplus liquid through the other end of the connection portion 21, and has a surplus liquid recovery portion 20 that is removed after suctioning and curing the surplus liquid on the component body 10.

[0051] With such a configuration, the connection portion 21 is formed at locations where liquid reservoirs are likely to form or where liquid reservoirs are not desired, and surplus liquid such as liquid reservoirs can be efficiently recovered by capillary action through the connection portion 21. Therefore, the coating component 100 can suppress variations in film thickness and enhance the shape accuracy after coating.

[0052] Further, in the coating component 100, the intervals between the rod-shaped bodies 21a of the connection portion 21 may be gradually narrowed from the component body 10 side toward the recovery portion 22.

[0053] With such a configuration, the capillary force acting on the gap 21b increases toward the recovery portion 22 side, resulting in a liquid guiding structure that can improve the flow rate of the surplus liquid.

[0054] Further, in the coating component 100, the component body 10 has a bracket 11, and it is preferable that the surplus liquid recovery portion 20 is formed at a location other than the bracket 11 of the component body 10.

[0055] With such a configuration, when removing the surplus liquid recovery part 20, it is possible to avoid breakage or the like of the bracket 11 having relatively low strength in the component main body 10.

[0056] Also, in the coating component 100, the rod-shaped body 21a of the connection part 21 preferably has a diameter of 1 mm or less.

[0057] With such a configuration, the connection part 21 improves the fluidity of the surplus liquid due to surface tension (ease of suction of the recovery part 22), and the surplus liquid recovery part 20 can be easily removed.

[0058] Also, in the coating component 100, the interval between the rod-shaped bodies 21a of the connection part 21 preferably is 1 mm or less.

[0059] With such a configuration, the movement of the surplus liquid from the component main body 10 to the recovery part 22 can be performed smoothly.

[0060] Also, in the coating component 100, the connection part 21 preferably has an overall length of 5 mm or more and 20 mm or less.

[0061] With such a configuration, while considering the mobility of the surplus liquid due to capillary action, it is possible to prevent or make it difficult for a liquid bridge to occur due to the movement of the surplus liquid between the component main body 10 and the surplus liquid recovery part 20.

[0062] Also, in the coating component 100, the recovery part 22 preferably has a length in the pulling-up direction of the component main body 10 with respect to the coating liquid of 5 mm or more and 20 mm or less.

[0063] With such a configuration, the surplus liquid around the connection part 21 can be sufficiently recovered, and the processing time of dip coating is not prolonged, suppressing a decrease in production efficiency.

[0064] A coating method for coating the component body 10 of any one of the above coating components 100 by immersing it in a coating liquid, wherein the pulling-up speed of the surplus liquid from the liquid tank 200 for storing the coating liquid to the surplus liquid recovery part 20 is preferably a speed that is 0.01 times or more and 0.5 times or less the pulling-up speed of the component body 10 from the liquid tank 200.

[0065] With such a configuration, by making the immersion time of the surplus liquid recovery part 20 longer than the immersion time of the component body 10, the surplus liquid easily moves to the liquid tank 200 due to the surface tension acting on the liquid tank 200 and the surplus liquid recovery part 20, and an effect of suppressing the formation of liquid accumulation can be obtained.

[0066] In the coating method, the stationary time in the state where the surplus liquid recovery part 20 is pulled up from the liquid tank 200 is preferably 1 minute or more and 30 minutes or less.

[0067] With such a configuration, in order to hold the stationary state of the component body 10 for an appropriate time, the coating liquid easily slides down due to surface tension, and the film thickness of the entire component body 10 can be stabilized.

[0068] In addition, the following embodiments are also included in the scope of the present invention: the coating component according to claim 1 having the features of claim 2; the coating component according to claim 2 having the features of claim 3; the coating component according to any one of claims 1 to 3 having the features of claim 4; the coating component according to claim 2 or 3 having the features of claim 5; the coating component according to any one of claims 2, 3, and 5 having the features of claim 6; the coating component according to any one of claims 2, 3, 5, and 6 having the features of claim 7; the coating component according to any one of claims 2, 3, 5 to 7 having the features of claim 8; the coating method of the coating component according to any one of claims 1 to 8 having the features of claim 9; the coating method according to claim 9 having the features of claim 10.

Example

[0069] Hereinafter, the present invention will be specifically described with reference to examples, but the scope of the present invention is not limited to the following examples.

[0070] Examples and comparative examples of the coating component according to the embodiment of the present invention will be described.

[0071] [Regarding the samples] 〈Molding process〉 Samples of Examples 1 to 5 and Comparative Example 1 were molded by a 3D printer (Saturn3 Ultra: manufactured by elgoo) using alpha resin 3D-HS-05-00 (manufactured by Alpha Chemical Research Co., Ltd.) as the forming material.

[0072] Samples of Examples 1 to 5 were molded in a shape in which seven surplus liquid recovery parts were arranged at equal intervals on the lower end side in the pulling-up direction during dip coating with respect to a 70 mm × 70 mm square plate corresponding to the part body as shown in Fig. 7(a). Note that the form of the surplus liquid recovery part shown in Fig. 7(a) is an example, and the specifications of the samples of each example are as shown in Fig. 8.

[0073] Comparative Example 1 was molded in a shape without forming the surplus liquid recovery parts of Examples 1 to 5, that is, only with a plate corresponding to the part body as shown in Fig. 7(b).

[0074] Details of the specifications of the samples of Examples 1 to 5 and Comparative Example 1 (such as the diameter (mm) of the rod-shaped body of the connecting part in the surplus liquid recovery part, the number of rod-shaped bodies, the total length (mm) of the rod-shaped bodies, the length (mm) in the pulling-up direction of the recovery part, etc.) are summarized in the table shown in Fig. 8.

[0075] 〈Coating process〉 Each sample of Examples 1 to 5 was coated by the dip coating method based on the following coating method. First, the entire part was immersed in a liquid tank storing a coating solution (acrylic hard coat X-48-5030, manufactured by Shin-Etsu Silicone Co., Ltd.) for 60 seconds. Next, it was pulled up to the position where the surplus liquid recovery part was immersed at a pulling-up speed of 5 mm / sec (corresponding to the pulling-up speed in the first pulling-up step), and left stationary for 60 minutes (corresponding to the stationary time in the stationary step). Next, it was pulled up at a pulling-up speed of 0.5 mm / sec (corresponding to the pulling-up speed in the second pulling-up step), and the entire part was withdrawn from the liquid tank 200. Thereafter, a curing treatment by UV irradiation (wavelength 345 to 375 nm, 2 minutes) was carried out to cure the coating solution, and the coating treatment of each sample was completed. Comparative Example 1 was subjected to each treatment excluding the pulling-up difference treatment corresponding to the second pulling-up step in the coating treatment of each example to carry out the coating treatment of the sample.

[0076] [Test Method] The examples and comparative examples were cut so as to pass through the central part of the part, and the film thickness (μm) at the central part and the film thickness (μm) at the lower end part of each sample were measured using a microscope (product name: VHX-X1, manufactured by Keyence Corporation). The test results were as shown in the table of FIG. 8.

[0077] [Results] As shown in FIG. 8, in Examples 1 to 5, the difference between the film thickness at the central part and the film thickness at the lower end part was slight (a difference of 3 μm to 40 μm), whereas in Comparative Example 1, the difference between the film thickness at the central part and the film thickness at the lower end part was as large as 130 μm compared with each example. From this, it was confirmed that providing a surplus liquid recovery part in the coated part can efficiently recover the surplus liquid and contributes to the stabilization of the film thickness of the entire part. Further, when comparing Example 1 and Example 4, it was confirmed that reducing the diameter of the rod-shaped body and increasing the number of rod-shaped bodies are important for achieving uniform film thickness of the entire part. Furthermore, when comparing Example 1 and Example 3, it was confirmed that increasing the length of the recovery part in the pulling-up direction increases the recovery amount of the coating solution and contributes to the uniformization of the film thickness.

Explanation of Signs

[0078] 10 Component body, 11 Bracket, 20 Surplus liquid recovery part, 21 Connection part, 21a Rod-shaped body, 21b Gap, 22 Recovery part, 100 Coating part, 200 Liquid tank, X Liquid accumulation part.

Claims

1. A coated component in which a coating liquid is coated on a component body, The coated component having a surplus liquid recovery part that is formed by being partially connected to the component body and sucks and cures the surplus liquid of the coating liquid and then removes it.

2. The surplus liquid recovery part A connection part formed by arranging a plurality of rod-shaped bodies with one end connected to the component body at intervals at which the surplus liquid can move by capillary action, And a recovery part that recovers the surplus liquid through the other end of the connection part. The coated component according to claim 1.

3. The interval between the rod-shaped bodies of the connection part gradually narrows from the component body side toward the recovery part. The coated component according to claim 2.

4. The component body has a bracket, The surplus liquid recovery part is formed at a location other than the bracket of the component body. The coated component according to claim 1.

5. The rod-shaped bodies of the connection part have a diameter of 1 mm or less. The coated component according to claim 2.

6. The interval between the rod-shaped bodies of the connection part is 1 mm or less. The coated component according to claim 2.

7. The total length of the connection part is 5 mm or more and 20 mm or less. The coated component according to claim 2.

8. The recovery part has a length in the pulling-up direction of the component body with respect to the coating liquid of 5 mm or more and 20 mm or less. The coated component according to claim 2.

9. A coating method of immersing the component body of the coated component according to any one of claims 1 to 8 in the coating liquid for coating, The pulling-up speed of the surplus liquid recovery part from a liquid tank storing the coating liquid is a speed of 0.01 times or more and 0.5 times or less of the pulling-up speed of the component body from the liquid tank 200. The coating method.

10. The stationary time in a state where the surplus liquid recovery part is pulled up from the liquid tank is 1 minute or more and 30 minutes or less. The coating method according to claim 9.

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