JP6302773B2 - Vehicle coating agent, vehicle body processing method and vehicle body processing apparatus using the same - Google Patents

Description

  The present invention provides a vehicle coating agent that imparts high water slidability, water repellency, luster, and slipperiness to a surface composed of paint, glass, rubber, plastic, etc. for automobiles, etc. The present invention relates to a vehicle body processing method and a vehicle body processing apparatus using the same.

  In a coating performed on the surface of a vehicle such as an automobile using a car wash machine, an aqueous emulsion containing amino-modified polysiloxane as a main component is diluted with water by several tens to several hundred times and spray-coated. Amino-modified polysiloxane is obtained by substituting a part of methyl group of dimethylpolysiloxane with aminoalkyl group or aminoalkyl-substituted aminoalkyl group. Depending on the amino equivalent and molecular weight, reactivity, adsorptivity, gloss and slipperiness The properties such as change. This amino-modified polysiloxane can be easily made into an aqueous emulsion by neutralizing with an organic acid or the like, and has an adsorptive property. It can be adsorbed on the surface. Moreover, after adsorption | suction, it will bridge | crosslink with the oxygen and moisture in the air on the vehicle surface, and the film | membrane excellent in durability will be formed. Because of these properties, amino-modified polysiloxanes are frequently used for coating using a car wash machine.

  Moreover, as a conventional example for the purpose of increasing the adsorptivity of the film component, Patent Document 1 discloses a coating agent obtained by emulsifying amino-modified polysiloxane with a nonionic surfactant and containing a specific cationic surfactant. Is disclosed.

  Further, Patent Document 2 discloses a method of applying a composition obtained by emulsifying an amino-modified polysiloxane with a cationic surfactant and / or a nonionic surfactant after applying a cationic wax.

  In recent years, a composition containing trimethylsiloxysilicic acid has also been disclosed. For manual use, amino-modified dimethylpolysiloxane and other organopolysiloxane are used in combination, and washing and water repellent treatment are performed simultaneously. For car wash machines, after applying a treatment agent containing amino-modified polysiloxane in the component or a coating agent containing amino-modified polysiloxane, the method of applying another coating agent again is the same as above. In addition, compositions and treatment methods utilizing the adsorptivity of amino-modified polysiloxanes have been published. (Patent Documents 3 to 5)

  As the above conventional example, an emulsion in which a mixed liquid of trimethylsiloxysilicic acid and organopolysiloxane is dispersed in water and a cleaning water repellent for manual operation containing amino-modified polydimethylsiloxane, organic acid, and alkylglucoside are disclosed in Patent Literature 3 is disclosed. Further, Patent Document 4 discloses an emulsion composition for car polish containing a specific amino-modified polysiloxane as a main component. Further, Patent Document 5 discloses a method in which an amino-modified polysiloxane-containing coating agent is applied and then a coating agent that does not contain amino-modified polysiloxane is further applied.

  All of these conventional examples are coating agents containing a specific amino-modified polysiloxane, and a film can be formed by utilizing this adsorptivity to impart a high degree of water repellency. However, this adsorptivity has a problem of inhibiting water slidability when used in combination with trimethylsiloxysilicate having a high water slidability. If the surface of the vehicle gets wet due to rain after coating, the water drops often remain without sliding down. However, not only does it stick as a scale and it impairs aesthetics, but it also makes it difficult to remove it if left as it is, leading to damage to the surface of the vehicle body.

  In addition, when a coating agent containing a specific amino-modified polysiloxane is used in a car wash machine or the like, there is a problem that due to its reactivity, it is gradually cured after adsorbing on the inner wall of the pipe and causing clogging of the pipe.

  On the other hand, a gate type car wash machine that performs a car wash process while relatively moving a main body and a vehicle body back and forth is known as a car wash machine that sprays cleaning liquid on the surface of the vehicle body. In this car wash machine, the cleaning liquid is sprayed on the surface of the vehicle body from the injection nozzle having a fan-shaped injection pattern, and is applied to the entire vehicle body by relative movement with respect to the vehicle body. (Patent Document 6)

  Now, in order to make the surface of the vehicle body have a high-quality finish, it is required to apply the coating agent uniformly and uniformly on the surface of the vehicle body. When applying a coating agent using a conventional fan-shaped injection nozzle, the relative movement between the car wash machine and the vehicle body is slowed down or the injection nozzle is swung to allow the coating agent to act uniformly on the surface of the vehicle body with a predetermined thickness. Although a method of swinging is conceivable, there arises a problem that the car washing time becomes long and the consumption of the coating agent increases.

JP-A-8-188745 JP 2001-49189 A JP-A-11-116898 JP 2004-339305 A JP 2005-28337 A JP 2008-230299 A

  In view of the above problems, the present invention uniformly applies to a surface composed of automobile paint, glass, rubber, plastic, etc., and not only water repellency but also imparts water slidability, An object of the present invention is to provide a vehicle coating agent that reduces the amount of water droplets remaining, suppresses the sticking of scale, and imparts gloss and slipperiness to protect the vehicle surface and improve the aesthetic appearance. It is another object of the present invention to provide a vehicle body processing method and a vehicle body cleaning apparatus that can efficiently apply the vehicle coating agent to the vehicle surface without unevenness.

  As a means to solve such problems, adsorption of the cationic water-soluble polymer compound, which is highly hydrophilic and does not inhibit water slidability, with the cationic group, demonstrates the high water slidability and water repellency of trimethylsiloxysilicate. Furthermore, it has been found that the glossiness and slipperiness which are the characteristics of the organopolysiloxane having a linear siloxane structure are imparted. In addition, a vehicle body treatment method and a vehicle body washing apparatus that can cause a vehicle coating agent to act evenly on the vehicle surface have been developed.

  That is, the present invention relates to trimethylsiloxysilicic acid (1), organopolysiloxane having a linear siloxane structure (2), nonionic surfactant (3), cationic water-soluble high water-soluble cation group A vehicle coating agent comprising a molecular compound (4) and water is provided.

  As a vehicle body treatment method for causing the vehicle coating agent to act uniformly on the vehicle surface, the vehicle coating agent is sprayed on the surface of the vehicle, and washing water is sprayed onto the vehicle surface after the vehicle coating agent is sprayed and washed. Further, the spray nozzle for applying the vehicle coating agent is moved relative to the vehicle body, and the vehicle coating agent is overlaid on the vehicle surface.

  As a vehicle body processing apparatus for executing this vehicle body cleaning method, a main body frame having an injection nozzle for applying the vehicle coating agent on the surface of the vehicle body is moved relative to the vehicle, and the vehicle coating agent is applied to the surface of the vehicle body along with this movement. The process and the process of injecting cleaning water onto the surface of the vehicle body coated with the vehicle coating agent are sequentially executed. Further, a step of further applying the vehicle coating agent to the vehicle body surface to which the vehicle coating agent has been applied is sequentially executed. The injection nozzle for spraying the vehicle coating agent is a charging nozzle in which an injection pattern with a substantially uniform flow distribution is formed of one of a circle, an ellipse, and a square.

  The vehicle coating agent of the present invention can impart water repellency and water slidability to the surface composed of automobile paint, glass, rubber, plastic, etc., reduce water droplet residue on the vehicle surface, and suppress scale sticking. can do. Further, gloss and slipperiness can be imparted, and the vehicle surface can be protected and the appearance can be improved.

  By spraying cleaning water onto the vehicle surface after the vehicle coating agent has been sprayed, components other than the extra coating film substance are washed away, and the coating layer of the coating agent is made more uniform to prevent uneven application. In addition, more effective coating is realized by applying the vehicle coating agent.

  As a spray nozzle that sprays the vehicle coating agent on the vehicle surface, a filling nozzle (filled cone, filled cone, filled elliptical cone) with a substantially uniform flow distribution is used, so that variations in coating amount can be suppressed and the vehicle surface A coating agent can be applied evenly.

It is a side view which shows the car wash machine provided with the vehicle body processing apparatus of this invention. It is explanatory drawing which shows the structure and operation | movement of a coating agent distribution pipe. It is explanatory drawing which shows a water supply system. It is a block diagram which shows a control system. It is process drawing of a coating dispersion | distribution course.

First, a preferred embodiment of the vehicle coating agent will be described.
The trimethylsiloxysilicate (1) (hereinafter abbreviated as “component (1)”) used in the present invention is represented by the general formula ((CH ₃ ) ₃ SiO _1/2 ) x · (SiO ₂ ) y, It is also called MQ resin because of its structure and constitutional unit. In this, water glass is used as a starting material of Q unit (SiO _4/2 ), and the end is blocked with a trimethylsilyl group (M unit (CH ₃ ) ₃ SiO _1/2 ).

  As such component (1), those dissolved in an organic solvent, organopolysiloxane or the like, or those obtained by making them into an aqueous emulsion, etc. are on the market. Can be used in the invention.

The organopolysiloxane (2) (hereinafter abbreviated as “component (2)”) having a linear siloxane structure used in the present invention is represented by the general formula R ₃ SiO (R ₂ SiO) _n SiR ₃ and is dimethylpolysiloxane. And methyl hydrogen polysiloxane and organically modified polysiloxane.

  In addition, the types of modification of the above-mentioned organically modified polysiloxane include alkyl modification, alkylaralkyl modification, fatty acid modification, epoxy modification, carboxyl modification, polyether modification, alcohol modification, fluoroalkyl modification, methacryl modification, methylphenyl modification, epoxy poly Examples include ether modification.

Such component (2) can be appropriately selected in view of properties such as gloss, slipperiness, and film homogeneity, and the kinematic viscosity is preferably 1 to 10000 mm ² / s, and more preferably 5 to 3500 mm ² / s. Is preferred. This is because if the kinematic viscosity of component (2) is too high, the uniformity of the coating will be poor and unevenness will easily occur. If the kinematic viscosity is too low, the uniformity of the coating will be improved, but the gloss and slip properties will be reduced. Because. In addition, the component (2) is not limited to oil-like ones, and those that have been made into aqueous emulsions are marketed, and one or more of them can be selected and used in the present invention.

  The nonionic surfactant (3) used in the present invention (hereinafter abbreviated as “component (3)”) is polyoxyethylene alkyl ether, polyoxyalkylene alkyl ether, polyoxyethylene alkylphenyl ether, polyhydric alcohol fatty acid. Examples include esters, polyoxyethylene polyhydric alcohol fatty acid esters, polyoxyethylene fatty acid esters, polyglycerin fatty acid esters, alkylamine oxides, and the like.

  From these, one or more kinds can be selected in view of characteristics such as emulsifying property and stability of the present composition, and these components (3) themselves are well known in the art. It can be obtained from the market and used in the present invention.

  The cationic water-soluble polymer compound (4) used in the present invention (hereinafter abbreviated as “component (4)”) is cationized starch, cationized guar gum, cationized cellulose, cationized locust bean gum, cationized tara gum Moreover, thickening polysaccharides, such as these derivatives, etc. are mentioned.

  From among these, one or more kinds can be selected in view of the properties such as the adsorptivity by the cation group and the emulsifiability and stability of the present composition, and these components (4) are obtained from the market. Can be used in the present invention.

  The water used in the coating agent of the present invention is preferably ion-exchanged water from which salts have been removed so as not to affect other components in the composition.

  In addition to the above essential components, this coating agent is further provided with a low temperature stabilizer such as a lower alcohol, glycol ether, polyhydric alcohol, antioxidant, or ultraviolet absorber as long as it does not interfere with the achievement of the object of the present invention. Ingredients such as component stabilizers, pH adjusters, antiseptics, rust inhibitors, colorants, fragrances and the like can be contained.

  Next, a vehicle body processing apparatus for applying the vehicle coating agent will be described. Here, an example will be described in which a car-washing machine is used that reciprocates across a car and sequentially executes washing and drying on the car. However, the car-washing machine in particular does not depart from the present invention. It is not limited to.

  In FIG. 1, reference numeral 1 denotes a main body frame, which is formed in a gate shape and travels reciprocally on a traveling rail 2, 2 laid on the floor surface by being driven by a traveling motor 3. The main body frame 1 is provided with a brush device, a blower nozzle, and a spray pipe as various types of car wash processing devices for performing a car wash process. As the main body frame 1 travels, water, detergent, and wax are supplied to the vehicle body from the spray pipe. A brush cleaning process is performed by brushing with a brush device while spraying, a coating agent spraying process in which a coating agent is sprayed onto the vehicle body from a spray pipe, and a drying process in which air is blown from the blower nozzle onto the vehicle body.

  The brush device includes a top brush 4 that moves up and down along the upper surface of the vehicle body and brushes the upper surface, and a pair of left and right side brushes 5 that open and close in the width direction of the vehicle body and brush the front and rear surfaces and side surfaces of the vehicle body. Yes. The blower nozzle includes a top nozzle 6 that moves up and down along the upper surface of the vehicle body and blows air on the upper surface to dry the air, and a pair of left and right side nozzles 7 that blow air on the side surface of the vehicle body and drys the air. In addition, each operation | movement of raising / lowering, opening / closing, and rotation is performed by the well-known means by the motor which can be rotated forward / reversely.

  The spray pipes are a shampoo spray pipe 8 that selectively sprays water and shampoo on the car body, a wax spray pipe 9 that sprays water and wax selectively on the car body, and a water spray that sprays water on the car body. A pipe 10 and coating agent spraying pipes 11 and 12 for spraying a coating agent on an automobile body are provided. As shown in FIG. 2, the shampoo spraying pipe 8, the wax spraying pipe 9, and the water spraying pipe 10 are each formed in an arch shape, and spray each processing agent on the upper surface and the side surface of the vehicle body. The coating agent spraying pipe 11 is attached to the top nozzle 6 in a horizontal posture, and mainly sprays the coating agent on the upper surface of the vehicle body. The coating agent spraying pipe 12 is attached to the leg portion of the main body frame 1 in a vertical posture and sprays the coating agent mainly on the side surface of the vehicle body.

  These car wash treatment apparatuses are arranged from the front of the main body frame 1 with a shampoo spray pipe 8, a top brush 4, a coating agent spray pipe 12, a wax spray pipe 9, a side brush 5, a water spray pipe 10, and a top nozzle 6 (coating agent spray). Pipe 11) and side nozzle 7 are arranged in this order.

  Although not shown in particular, a car type detection device, a travel encoder, a travel limit switch, etc., which are installed in a general gate-type car wash machine, are mounted, and the position of the main body frame 1 and the shape of the car are recognized, and each car wash process is performed. The device will be controlled.

FIG. 2 shows the configuration of the coating agent spreading pipes 11 and 12.
The coating agent distribution pipe 11 is attached in a horizontal posture along the front surface of the top nozzle 6, and four injection nozzles 11a to 11d are arranged at equal intervals on the pipeline. Each of the spray nozzles 11a to 11d is oriented so as to spray the coating agent vertically downward.

  The coating agent spraying pipe 12 is positioned in front of the top nozzle 6 (coating agent spraying pipe 11) in the main body frame 1 and is attached to the predetermined height position of the leg portion of the main body frame in a vertical posture as a pair on the left and right. Two injection nozzles 12a and 12b are arranged vertically. The spray nozzles 12a and 12b are each directed so as to spray the coating agent from a horizontal lateral direction toward a predetermined angle downward.

  Each of the injection nozzles 11a to 11d and the injection nozzles 12a and 12b employs a full cone nozzle having a circular injection pattern with a substantially uniform flow rate distribution. The full cone nozzle sprays the coating agent in a full conical shape from the injection port, and sprays the coating agent in a circular shape toward the body surface. The coating agent sprayed from each spray nozzle is sprayed in a circular shape on the surface of the vehicle body, and is dispersed throughout the vehicle body while moving in the vehicle length direction by the travel of the main body frame 1.

  In addition, the cone diffusion angle of the injection nozzle can be arbitrarily selected, and is set so that the coating agent interference and polymerization on the vehicle body surface are reduced according to the number of injection nozzles, the arrangement pitch, and the distance to the vehicle body. Is done. The spray pressure and the coating amount are set so as to achieve both the fixing property of the coating agent and the performance properties including the show effect. In particular, when the injection pressure is high, the coating agent is repelled on the surface of the vehicle body, leading to a decrease in adsorptivity. Therefore, it is preferably used by setting the injection pressure to 0.1 to 0.5 Mpa and the application amount to about 20 liters / minute. .

FIG. 3 is a piping diagram showing the water supply system.
The water supply system is divided into a low pressure system pipe for supplying water to the shampoo spray pipe 8, the wax spray pipe 9 and the water spray pipe 10, and a high pressure system pipe for supplying water to the coating agent spray pipes 11 and 12.

  The low pressure system pipe is supplied with water by a low pressure pump 14 provided in the water storage tank 13, a pipe 15 leading to the shampoo spray pipe 8, a pipe 16 leading to the wax spray pipe 9, and a pipe leading to the water spray pipe 10. 17. A shampoo pipe 19 communicated with the shampoo tank 18 is connected to the pipe 15 via a mixer 20, and a fixed amount of shampoo is sucked up by a tube pump 21 provided in the shampoo pipe 19, and is piped from the mixer 20. Shampoo is mixed in the path 15. A wax pipe line 23 communicating with the wax tank 22 is connected to the pipe line 16 via a mixer 24, and a fixed amount of wax is sucked up by a tube pump 25 provided in the wax pipe line 23. Wax is mixed in the path 16. The pipes 15, 16, and 17 are controlled to be opened and closed by electromagnetic valves 26, 27, and 28, respectively.

  The high-pressure system pipeline is provided with a pipeline 30 that is supplied with water by a high-pressure pump 29 that absorbs water from the water storage tank 14 and reaches the coating agent spraying pipelines 11 and 12. A coating agent pipe line 32 communicating with the coating agent tank 31 is connected to the pipe line 30 via a mixer 33, and a fixed amount of coating agent is sucked and mixed by a tube pump 34 provided in the coating agent pipe line 32. The coating agent is mixed into the pipe line 30 from the vessel 33. Here, the water dilution ratio is appropriately set so that the total amount of the components (1) and (2) is 0.01 to 1% by mass in the liquid mixed in the conduit 30.

  The conduit 30 is controlled to open and close by an electromagnetic valve 35, and the coating agent conduit 32 is controlled to open and close by an electromagnetic valve 36. Further, the pipe line 30 is branched downstream of the mixer 33 into a pipe line 30 a leading to the coating agent spraying pipe line 11 and a pipe line 30 b leading to the coating agent spraying pipe line 12.

FIG. 4 is a block diagram showing a control system of the present invention.
A main body control unit 37 includes a main body running motor 3, a top brush 4, a side brush 5, a top nozzle 6, a side nozzle 7, a low-pressure low-pressure pump 14, tube pumps 21 and 25, solenoid valves 26, 27 and 28, and a high pressure. A high-pressure pump 29, a tube pump 34, electromagnetic valves 35 and 36, and a car wash acceptance device 38 are connected.

  The car wash reception device 38 is provided at a height at which it can be operated from the driver's seat of the automobile just before entering the travel range (car wash area) of the main body frame 1 given by the rails 2 and 2, and has an operation panel 39 on the front surface. . The operation panel 39 is provided with a fee receiving section 40, a car wash course key 41, a car wash start key 42, and a car wash stop key 43, and can set a car wash configuration according to the customer's wishes. Among these, the car wash course key 41 can select a car wash course such as a water wash, a shampoo car wash, a wax car wash, and a coating car wash course.

  The main body frame 1 is in the waiting state for entering the vehicle to be cleaned at the standby position, and the customer (driver) enters the car wash area from the front after receiving the car wash reception by the car wash reception device 38 installed at the entrance. The vehicle is stopped at a predetermined stop position. When the vehicle is stopped at the regular stop position, the car wash is executed with the car wash content received by the car wash acceptance device 38. When the car wash is completed, the vehicle is prompted to leave, and when the vehicle leaves, the main body frame 1 returns to the standby position and returns to the waiting state. In other words, a car wash is performed while riding in a car, and a drive-through car wash that passes after the car wash is performed.

Hereinafter, the car wash operation of the coated car wash course will be described with reference to FIG.
The car wash course is a 2.5 reciprocation course in which shampoo cleaning, waxing, coating / rinsing, and drying are sequentially performed while the main body frame 1 is reciprocating 2.5 times, and shampoo cleaning and waxing is performed while the main body frame 1 is reciprocating 3.5 times. There are 3.5 round trip courses in which hanging, coating, high-pressure water washing, and drying are executed sequentially.

(2.5 round-trip course)
<First Outgoing Step> Shampoo cleaning As the main body frame 1 travels, shampoo is sprayed from the shampoo spray pipe 8, wash water is sprayed from the wax spray pipe 9 and the water spray pipe 10, and the top brush 4 and the side brush 5 are rotated. And shampooing the car body.

<First return step> Waxing With the return of the main body frame 1, the wax spray pipe 9 sprays the wax, the shampoo spray pipe 8 and the water spray pipe 10, respectively, and the top brush 4 and the side brush 5 rotate. Then, wax the car body.

<Second Outward Process> First Coating As the main body frame 1 travels, the coating agent is applied from the coating agent application pipes 11 and 12, and the top brush 4 and the side brush 5 are rotated to apply the first coating on the vehicle body surface. Do.

<Second return process> Second coating / rinse As the main body frame 1 goes back, the coating agent is applied from the coating agent application pipes 11 and 12 to perform the second coating on the vehicle body surface, and the shampoo application pipe 8 is cleaned. Rinse the body with water.

<Third Outgoing Step> Drying As the main body frame 1 goes in, the vehicle body surface is dried by blowing high-pressure air from the top nozzle 6 and the side nozzle 7.

  As described above, in the 2.5 round trip course, the body surface is shampooed in the first forward step, and then the wax is sprayed in the first backward step to impart water repellency to the body surface. Thereafter, water droplets on the upper surface of the vehicle body are repelled by the top brush 4 that precedes in the second forward step, and the first coating agent is sprayed on the vehicle surface where residual water is reduced in combination with water repellency by the wax. In the subsequent second recovery process, the coating agent is applied to the vehicle body surface, and water is sprayed from the shampoo spraying pipe 8 that follows, and components other than the excessive coating film substance on the vehicle body surface are washed away. In the final third forward process, the coating process is completed by spraying high pressure air from the blower nozzle onto the body surface to remove the water droplets, and through this, the body surface is given high water slidability, water repellency, gloss and slipperiness. The

  The coating agent is sprayed from an injection nozzle employing a full cone nozzle having a circular injection pattern with a substantially uniform flow rate distribution, and the coating agent can be uniformly distributed over the entire surface of the vehicle body.

  That is, as shown in FIG. 3, the coating agent is sprayed in a conical spray pattern vertically downward from the spray nozzles 11 a to 11 d of the coating agent spraying conduit 11 on the upper surface of the vehicle body. In addition, the coating agent is sprayed on the side surface of the vehicle body from the spray nozzles 12a and 12b of the coating agent spraying conduit 12 in a horizontal and obliquely downward conical spray pattern.

  Since the vehicle height and the vehicle width differ depending on the vehicle type, the contact pressure and the spraying range when the coating agent comes into contact with the vehicle body surface are changed by changing the distance from each injection nozzle to the vehicle body surface. For example, in a normal vehicle with a low vehicle height, the contact pressure on the vehicle body surface is weaker and the spraying range becomes wider than a wagon vehicle with a high vehicle height. Therefore, in the coating process, when the coating agent is sprayed from the state where the top nozzle 6 is in the standby position, a difference occurs in the coating application state for each vehicle type. Therefore, washing water is sprayed onto the surface of the car body after the coating agent has been sprayed and washed, so that the coating layer of the coating agent becomes uniform and uneven application can be suppressed. Can be sprayed without.

  In addition, since the injection nozzles 12a and 12b are provided at different heights on the side of the vehicle body and are directed to spray the coating agent obliquely downward, the one box having a high vehicle height from the upper injection nozzle 12a. Since the coating agent is sprayed obliquely downward toward the position including the door window portion of the light vehicle from the lower injection nozzle 12b toward the position including the vehicle window portion, the coating agent is applied to the entire side surface of the vehicle body regardless of the vehicle type. Can be sprayed.

  In the second coating, the coating agent may be sprayed while raising and lowering the top nozzle 6 to which the coating spray pipe 11 is attached along the upper surface contour of the vehicle body. By making the top nozzle 6 follow, the distance between the coating spray pipe 11 and the vehicle body surface is kept constant, and a more uniform coating agent is layered on the coating agent uniformly applied by the first coating, A thick coating is possible.

(3.5 round trip course)
The 3.5 round trip course is the same as the 2.5 round trip course from the first forward step to the second reverse step, and the next step is executed from the third forward step to the fourth forward step.

<Third Outgoing Step> Third Coating As the main body frame 1 travels, the coating agent is applied from the coating agent application pipes 11 and 12 to perform the third coating on the vehicle body surface.

<Third return step> High pressure rinsing As the main body frame 1 goes back, high pressure cleaning water is sprayed from the coating spray pipe 11 onto the upper surface of the vehicle body, and cleaning water is sprayed from the shampoo spray pipe 8 and the wax spray pipe 9 respectively. Rinse the car body. At this time, the cleaning water is sprayed while raising and lowering the top nozzle 6 to which the coating spray pipe 11 is attached along the upper surface contour of the vehicle body.

<Fourth Outgoing Step> Drying As the main body frame 1 goes in, the vehicle body is dried by blowing high-pressure air from the nozzles 6 and 7.

  Thus, in the 3.5 reciprocating course, in addition to the 2.5 reciprocating course, the high pressure for injecting cleaning water from the coating spray pipe 11 while raising and lowering the top nozzle 6 along the upper surface contour of the vehicle body with respect to the coated vehicle body surface. By rinsing, the component (3) among the components contained in the remaining coating agent is thoroughly washed away, and the coating film is smoothed to suppress coating unevenness and improve the film uniformity. Realized. Moreover, the flow of water droplets on the surface of the vehicle body can be visually recognized by high-pressure rinsing after spraying the coating agent, and the customer satisfaction and the repeat rate can be improved by visually appealing the water and water repellency. Furthermore, by passing high pressure water through the pipe line in which the coating agent is mixed, the pipe line and the injection nozzle are cleaned, and the effect of preventing clogging is obtained.

  In the second coating and the third coating, the coating agent may be sprayed while raising and lowering the top nozzle 6 to which the coating spray pipe 11 is attached along the upper surface contour of the vehicle body. That is, in the first coating, the coating agent is sprayed on the entire vehicle body from the height at which the top nozzle 6 is set at the standby position, the vehicle body surface is washed with water, and the top nozzle 6 is moved up and down while following the upper surface contour of the vehicle body. It is also possible to overlap. As a result, a coating with a higher quality feeling is realized, and the components other than the excessive coating film substance on the vehicle body surface are washed away by subsequent washing with water, and the coating film is smoothed and improved in homogeneity.

Examples and Comparative Examples

  Compositions 1 to 5 are prepared as vehicle coating agent samples, and the surface of the vehicle is coated using the samples of compositions 1 to 5 in the above-mentioned gate-type car wash machine, and tests 1 to 4 are performed on the vehicle surface. Then, the state of the coating was evaluated. Moreover, the coating agent was respectively sprayed with the fan-shaped nozzle which has a fan-shaped spray pattern, and the charging nozzle which has a spray pattern of a full cone, and test 1-4 was similarly implemented and the state of coating was evaluated.

  Table 1 shows the composition of compositions 1 to 5, and Table 2 shows the components. The unit of the numbers in Table 1 is mass%, and the mass% indicates the concentration of each component in the finally obtained composition.

(sample)
The basic composition of the sample was 0.5% by mass of the cationic water-soluble polymer compound of component (4) and 1% by mass of the nonionic surfactant of component (3) in ion-exchanged water and stirred. 20% by mass of the aqueous trimethylsiloxysilicate emulsion of component (1) and 4% by mass of organopolysiloxane having a linear siloxane structure of component (2) were added and emulsified. With respect to this basic composition, compositions 1 to 5 are prepared as follows.

<Composition 1>
Adopting a dimethylpolysiloxane with a kinematic viscosity of 350 mm ² / s for the organopolysiloxane having a linear siloxane structure as the component (2) and adopting a cationized guar gum as the cationic water-soluble polymer compound as the component (4) Composition 1 was obtained.

<Composition 2>
Adopting a carboxyl-modified polysiloxane with a kinematic viscosity of 3000 mm ² / s for the organopolysiloxane having a linear siloxane structure as the component (2) and adopting a cationized guar gum as the cationic water-soluble polymer compound as the component (4) Thus, a composition of composition 2 was obtained.

<Composition 3>
Adopting dimethylpolysiloxane with a kinematic viscosity of 12500 mm ² / s for the organopolysiloxane having a linear siloxane structure of component (2) and adopting cationized guar gum for the cationic water-soluble polymer compound of component (4) Composition 3 was obtained.

<Composition 4>
In place of the organopolysiloxane having a linear siloxane structure of component (2), cyclopentasiloxane having a kinematic viscosity of 4 mm ² / s having a cyclic siloxane structure is employed, and a cationic water-soluble polymer compound of component (4) A cationized guar gum was employed as the composition of composition 4.

<Composition 5>
A dimethylpolysiloxane having a kinematic viscosity of 350 mm ² / s is employed as the organopolysiloxane having a linear siloxane structure as the component (2), and a nonionic water-soluble polymer is used instead of the cationic water-soluble polymer compound as the component (4). Hydroxypropyl guar gum, a functional polymer compound, was employed to make a composition of composition 5.

(test)
Each test uses a vehicle body surface coated with a coating agent having the above composition 1 to 5 by performing 2.5 round-trip courses of the coating car wash course of the portal type car wash machine. Moreover, in order to compare the coating by an injection nozzle, the vehicle body surface 1 which used the fan-shaped nozzle for the injection nozzle and the vehicle body surface 2 which used the charging nozzle were created, and each vehicle surface was evaluated. The test results are shown in Table 3.

<Test 1> Sliding water and water repellency test The body surface was washed with water, and the water sliding and water repellent state of the body surface was visually determined.

<Test 2> Gloss Test The gloss of the vehicle body surface was compared with an untreated part by visual observation.

<Test 3> Homogeneity test of coating The uniformity of the coating on the surface of the vehicle body was determined by visual comparison with the untreated portion.

<Test 4> Sliding test A 500 g weight was wrapped with a paper towel on the surface of the vehicle body, and gently placed on the inclined surface of the vehicle surface.

(Evaluation criteria)
The evaluation criteria for each test method are as follows.

<Test 1> Smooth water and water repellency test (visual judgment)
○: Water droplets are nearly spherical and there are few water droplets remaining.
(Triangle | delta): A water droplet is near semicircle and a water droplet remainder is a little large.
X: Water droplets are non-uniform, and there are portions that get wet.

<Test 2> Gloss test (visual judgment)
○: A clear improvement in gloss was observed.
Δ: Some improvement in gloss was observed.
X: There is almost no difference in gloss from the untreated part.

<Test 3> Film homogeneity test (visual determination)
A: A uniform film without unevenness was obtained.
Δ: Almost uniform film with slight unevenness was obtained.
X: It is a non-uniform | heterogeneous film with many unevenness.
Or it cannot be judged because there is almost no difference in gloss from the unprocessed part.

<Test 4> Sliding property test (visual judgment)
○: Slip off as soon as you release your hand.
Δ: Slowly slips down.
X: There is almost no difference from the untreated part and it does not slide so much.

(Evaluation results criticism)
For compositions 1 and 2, the body surface 1 using the fan-shaped nozzle and the body surface 2 using the charging nozzle are uniformly “sliding water”, “water repellency”, “gloss”, “coating uniformity” Performance ”and“ slidability ”were confirmed. In particular, the surface 2 of the vehicle body using the charging nozzle was confirmed to have better “water slidability”, “water repellency”, “gloss”, “uniformity of coating”, and “slidability”.

  In composition 3, since the kinematic viscosity of the organopolysiloxane having a linear siloxane structure as the component (2) is high, the coating film was uneven and was generally non-uniform. Composition 4 employs cyclopentasiloxane having a cyclic siloxane structure in place of the organopolysiloxane having a linear siloxane structure of component (2), and thus “coating uniformity” is good, but the film is thin. “Glossy” and “Slipperiness” were slightly low. Since composition 5 employs hydroxypropyl guar gum, which is a nonionic water-soluble polymer compound, instead of the cationic water-soluble polymer compound of component (4), it has no adsorptivity due to cationic groups, so the coating film is Even when the spray nozzle was used as a charging nozzle, the performance was poor overall.

  From the above test results, in order to impart a high degree of “sliding”, “water repellency”, “gloss”, “coating uniformity”, and “sliding” to the surface of the vehicle, and to apply uniformly without application unevenness, Compositions 1 to 3 were confirmed to be effective.

  That is, trimethylsiloxysilicic acid (1), organopolysiloxane (2) having a linear siloxane structure, nonionic surfactant (3), cationic water-soluble polymer compound having adsorptivity by a cationic group (4 ) And water are identified as a preferred embodiment.

In addition, by using full nozzles (including full cones, full square pyramids, and full elliptical cones) with a substantially uniform flow rate distribution, the coating agent can be easily and quickly applied to the surface of the vehicle body. In (2), it was confirmed that it was effective to use an organopolysiloxane having a linear siloxane structure and a kinematic viscosity in the range of 1 to 10,000 mm ² / s.

  Furthermore, it was confirmed that more effective coating can be achieved by applying a coating agent on the surface of the vehicle body using a portal type car wash machine. Although not specifically shown, when the coating agent is applied four or more times, the evaluation of “sliding water”, “water repellency”, and “gloss” is improved, but the coating becomes excessively thick and “coating uniformity”. It has also been confirmed that the evaluation of Therefore, it was confirmed that the setting up to 3.5 reciprocating courses in which the coating agent is applied three times is effective for the coating with the gate type car wash machine in consideration of time efficiency.

  The present invention is configured as described above. However, the structure of the gate type car wash machine is only one embodiment, and the car frame is moved in a reciprocating unit so that the car is moved backward after the car wash. A full-service car wash machine that moves from a car, a conveyor car wash machine that conveys a car to a stationary main body, a car transport car wash machine that transports a car back and forth with a carriage, and a relative mobile car wash machine that moves the machine and carriage relative to each other Any of them can be similarly adopted. Further, the number of spray pipes and spray nozzles, the layout, the number of car washing courses, the number of processes of the car washing course, etc. are not particularly limited.

DESCRIPTION OF SYMBOLS 1 Main body frame 11 Coating agent distribution pipe 11a-11d Injection nozzle 12 Coating agent distribution pipe 12a and 12b Injection nozzle

Claims (7)

Trimethylsiloxysilicic acid (1), organopolysiloxane (2) having a linear siloxane structure, nonionic surfactant (3), cationic water-soluble polymer compound (4) having adsorptivity by a cationic group, and Vehicle coating agent composed of water.
A vehicle body treatment method, wherein the vehicle coating agent according to claim 1 is applied to a surface of a vehicle body, and washing water is sprayed onto the surface of the vehicle after the vehicle coating agent is applied.
A vehicle body treatment method, wherein the vehicle coating agent according to claim 1 is applied to a vehicle body surface, and the vehicle coating agent is applied to the vehicle surface after the vehicle coating agent is applied.
A step of moving a main body frame having an injection nozzle for applying the vehicle coating agent according to claim 1 on the surface of the vehicle body relative to the vehicle, and applying the vehicle coating agent to the vehicle body surface along with the movement; And a step of injecting cleaning water on the surface of the vehicle body coated with the agent.
A step of moving a main body frame having an injection nozzle for applying the vehicle coating agent according to claim 1 on the surface of the vehicle body relative to the vehicle, and applying the vehicle coating agent to the vehicle body surface along with the movement; And a step of further applying the vehicle coating agent to the surface of the vehicle body to which the agent has been applied.
6. The vehicle body processing apparatus according to claim 4, wherein the injection nozzle is a charging nozzle having a substantially uniform flow rate distribution.
The vehicle body processing apparatus according to claim 6, wherein the spray nozzle has a spray pattern of any one of a circle, an ellipse, and a square.

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