JPH02229562A - Method and device for forming and spraying particle of liquid or melt - Google Patents

Abstract

PURPOSE:To improve quality by spraying liquid from a nozzle onto the surface of a circulating and moving object and applying the particles finely segmented by the collision of the spray flow on a base material. CONSTITUTION:The spray SP1 of the liquid L or melt M ejected from the spray nozzle 1 is struck against the surface of a roll 2 made of a metal or the like. The mists, i.e., particles in the spray are crushed by colliding against this surface to form the more finely segmented particles Ps which disperse into gas. Namely, an aerosol As is generated. The particles splashing in the air stick to the surface of the roll 2 up to a specified thickness t1 and form a layer Lf1. The reaction force of the sprays from this surface if fixed and, therefore, the crushed grain sizes of the particles are uniform as well when the spray SP1 is jetted onto the surface of this layer Lf1. The aerosol As is moved upward by a corona pin or the like and is stuck, i.e., applied on an object O to be coated by striking against the same at need. The aerosol is applied by an electrostatic system when needed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for producing and applying particles of liquid or melt. [Prior Art] Conventionally, as a method for producing particles of liquid or melt, the liquid or melt is sprayed from a nozzle, and the spray stream is
A method that has been used is to hit a hard plate and crush the particles by the impact to obtain finer particles.
However, the above method had the following drawbacks. 1st
Please refer to Figures 5 and 16. A liquid or melt is sprayed from a nozzle (101), and a hard plate (collision plate=
102). At first, the surface of the hard plate is made of hard material, which improves the crushing effect, but as time passes, the air spray of liquid or molten material sprayed on the surface improves the crushing effect by about 30%. 5 in spray
0%-60% adheres, accumulates and finally thick layer (Lh)
becomes. Needless to say, the surface of the layer is non-hard,
The impact force applied to the surface is reduced, and therefore the size of the crushed particles becomes coarser than that of the initial hard dough, resulting in the disadvantage that particles of non-uniform particle size are mixed together. When such particles are applied, the surface to be coated naturally becomes rough, which not only impairs the appearance but also poses a major quality problem, especially for high-tech products. 1. Problems to be Solved] As mentioned above, in the conventional collision-type liquid or melt particle generation method, the particle size of the particles increases with time during work, and the particle size of the generated particles is non-uniform. there were. The motivation for the present invention was to prevent the above-mentioned changes in particle formation over time, to produce uniform particles, and to apply them. SUMMARY OF THE INVENTION It is an object of the present invention to first produce particles with uniform particle size in spray impingement particle production of liquids or melts and to apply them immediately. The gist of the invention is to firstly provide a method for generating particles by spray impingement of a liquid or melt, in which the spray stream is cyclically moved onto a cleaned surface of a relatively hard object, or a mist of the spray is A method and apparatus for obtaining particles of uniform particle size by striking them onto a surface to which particles have adhered and have a constant thickness, that is, keeping the reaction force at the time of collision constant, and then applying them. Next, the method of the present invention will be explained in detail. First, particles with uniform particle size are created by applying a spray onto the surface of a relatively hard object that moves cyclically as described above. The most suitable objects for these purposes are rolls or running belts. Therefore, we will explain each of these items separately. l) In the case of rolls, there are four methods, so we will explain them separately. ■ 1st
Please refer to the figure. Spray the liquid (L) or melt (M) with a spray nozzle (
1) Hit the target with spray (SPI).
The mist, that is, the particles being sprayed, hit the surface and are crushed, becoming finer particles (Ps) and dispersed in the gas. In other words, smoke (As) is generated. In addition, as shown in Fig. 14, the opening angle (γ) of the spray pattern (SP) ejected from the nozzle (99) is made smaller, and the spray pattern (SP) is struck onto the surface of the roll (100) to reflect the reflection. It is also possible to place the object to be coated (o7) in the direction of the flow (R) and apply the coating to a relatively small area (S). In addition, when dividing the particles mentioned above, their behavior differs depending on the type of liquid, so we will explain them.
Liquids include those that are only liquid and those that contain solid components. In the former case, even if the liquid is subdivided, the components of the liquid remain unchanged. However, it is different if it contains solid ingredients. First, take the solution. In a solution, a solid substance is dissolved by a solvent, and the solid molecules are uniformly dispersed in the liquid at room temperature. Even if these particles become fragmented, they are still solution particles, and solid and liquid coexist. Therefore, it is necessary to expel these liquids to form only solid particles. Originally, when it comes to spraying, many liquids evaporate easily even at room temperature, but there are some that are difficult to evaporate. In that case, introduce heated carrier gas from below. Heat to promote vaporization.

This also applies to liquid emulsions and suspensions. As with the above solution, solid molecules or particles are dispersed in a liquid that easily vaporizes, so a heated carrier gas is introduced in the same way as above to promote vaporization. In the case of molten materials, they originally solidify at room temperature, so the above-mentioned spraying may be performed at room temperature, but in cases where it is necessary to shorten the solidification time, Or, if it is difficult to solidify, cooled carrier gas is introduced into the spray to solidify it in a short time. As described above, the particles in the spray mist are subdivided into particles of the desired particle size, for example, 0.1 micron particles or 500 micron particles. It can be obtained with uniform particle size. This particle size can be easily adjusted by changing the flow rate of the spray from the nozzle. In this way, particles can be obtained by applying a spray of liquid or melt onto the roll surface, but how does it work? During this process, the following phenomena occur. This will be explained next. Originally, when a spray (sp.) of liquid etc. is sprayed onto the surface of the roll (2), 70% of the particles are scattered in the air.
or more (for airless spray), at least 40% (
(in the case of air spray) is deposited on the surface of the roll (2). Then, they accumulate and gradually become thicker, and when a certain thickness is reached, it does not increase any further and becomes a constant thickness (t■). This layer thickness (Lf■) varies depending on the adhesion force of the liquid or melt, its own weight, viscosity, I! degree, spray speed, peripheral speed of the roll, etc., but it ranges from 11th to 31st. Also, at this time, it is desirable that the liquid or melt that aggregates without adhering and falls into the pan or temporary storage tank is collected by a pump into the tank and reused. When the spray (SP■) is sprayed onto the surface of (Lf■), the reaction force of the spray from the surface will also be constant, and therefore the particle size of the crushed particles will also be constant.However, in the above case , it takes some time for the bare surface of the roll (2) to become a surface with a constant layer thickness, and during that time the hardness of the surface changes, so the particle size of the crushed particles also changes. , during this time, non-uniform particles will be mixed in. To prevent this, do the following method? Please refer to Figure 2. Before starting the spraying operation, roll (3)
immersed in a pan (6) or temporary storage tank filled with the same type of liquid or melt as will be sprayed. When the rotation speed of the roll (3) is increased to the operating speed, the liquid adheres to the surface of the roll, and when it reaches a certain thickness (t2), it becomes constant and does not become a thicker layer. Applicable! (
Lf! ), the layer thickness remains the same, so uniform particles can be obtained under the same conditions. Note that the naturally attached thickness (t
■) If it is too thick, do the following. ■ Please refer to Figure 3. A liquid film thickness adjustment device (7) (doctor roll or doctor blade, etc.) is installed in the device shown in Figure 2 above. That is, the excessively thick layer (Lf3) deposited on the surface of the roll (4) is doctored and a thinner layer (t, f.
). Furthermore, if you want to set the layer thickness to zero, do the following. ■ Please refer to Figure 4. A spray flow method is used in which a device (9) for removing deposits of liquid or molten material is placed directly on the surface of the roll (5) to remove the deposits shown in Fig. 1 without attaching the pan or the like. Since SP4) is sprayed directly onto the metal surface, the degree of particle crushing is high and finer particles can be obtained. That is, the above spray (SP
4) Removing liquid or melt on the surface of the roll (5) outside the pattern 2! (9) is provided. The figure shows the installation of the scraper. The liquid or melt adhering to the mist in the spray (S P4) is removed by the scraper, that is, the surface of the roll (5) is cleaned, and the spray (S P4) is constantly circulated as a bare fabric.
P. ), the particle crushing effect is high and finer and more uniform particles can be obtained. At this time again.
It is desirable to collect the liquid or melt that has fallen into the pan or temporary storage tank using a pump and reuse it. 2) There are eight methods for running belts, so we will explain each section separately. ■ Fifth
Please refer to the figure. Two vertical rollers (16,
17) Spray (S Ps) in which liquid (L) or molten material (M) is ejected from a spray nozzle (11) onto the surface of the flat part of the belt (12) running between them or the surface of the belt on the rollers. Hit. The process by which particles are generated is the same as described in section (2) in the case of the roll in section (l) above, where particles of a constant thickness (t4) are deposited on the surface of the belt (12). The above spray (Sp
a) is hit. Particles with uniformity can be obtained. The generation process is the same as in 1》10 above, so the explanation will be omitted. ■ Please refer to Figure 6. The lower part of the vertical running belt <<l3>> in item (■) above is immersed in a liquid or molten material placed in a tank such as a pan (24). (l3) Spray (SP!
) to obtain uniform particles. ■ As shown by the upper imaginary line in the above figure (Fig. 6), the thickness (t6) of the layer (Lf7) on the belt adhered by the above-mentioned dipping is PeiIllI thickness! 11! ! 1 unit i! ! (19)
This method is performed by thinning it to an appropriate thickness using a PF tar roll or blade, etc., and the effect is as described above!
) Same as 10. ■ Please refer to Figure 7. As in 1) 1) above, do not use a pan containing liquid or melt, but use a spray (Spt) on the running belt (14).
) A device for removing liquid or melt on the belt (l4) surface that is deposited by the same spray outside the pattern area! (20
). By this device, the surface of the belt (14) that has been cleaned is circulated and sprayed again.
P? ) to produce finer and more uniform particles. ■ Please refer to Figure 8. This is a horizontal version of the vertical running belt device mentioned above. That is, the flat part on one side of the running belt (15) is directed upward, and the spray (Spa) is applied from above toward the flat part. As in the case of 2) above on the running belt surface, when liquid etc. adheres and reaches a certain limit thickness, the thickness becomes constant,
The liquid etc. sprayed onto that surface is uniformly reduced to t# by receiving a certain reaction force. ■ Same as in the case of the vertical running belt in item 2) 10 above, the horizontal running belt (15) As shown in Figure 8, the lower part of the belt is immersed in a liquid or the like to deposit a certain thickness of liquid on the surface of the belt, and then sprayed onto the surface of the liquid film layer (L f!). , to obtain particles with a constant particle size. ■ As in the case of the vertical running belt in 2) 10 above, the lower part of the horizontal running belt is immersed in liquid as shown in Figure 8, and the layer (Lf) attached to the surface of the belt (15) is first removed.
#) Liquid film thickness adjustment device! (25), etc., to obtain particles of a constant particle size by spraying onto a surface with a thickness of tAllet and an appropriate thickness of ffi (Lfs). ■ As in the case of the vertical running belt in 2) 10 above, remove the liquid etc. adhering to the surface of the horizontal running belt as shown in Figure 8! (23), always exposing the fabric of the belt, and spraying on the surface;
This results in finer and more uniform particles. Note that the above-mentioned spray method can also be used with air spray.
Airless spray may also be used. Particles with uniform particle size produced by the various methods described above are as shown in Figures 1 to 8.
In other words, it is applied. The term "coating" here includes everything from coatings where the particles are closely spaced, to dispersed coatings where the particles are far apart. Next, the elliptical structure of the device of the present invention will be explained. There are two types of this structure,
I will explain each section separately. 3) Please refer to Figure 9 for roll type. Vertical spray booth (34
), a roller (32) is provided horizontally. A spray nozzle (31) for liquid (L) or melt (M) is provided facing the surface of the roller. A discharge port (38) is provided at the bottom of the booth (34), and a discharge pipe (4) is connected to the discharge port (38).
1) and/or a supply tank (
A return pipe (42) to 43) is provided. Further, the upper part of the booth (34) has an opening (36) to serve as a coating section. A holder (50) or a conveyor for the object to be coated (0.) is provided above it, and if necessary, a corona pin (46) for static electricity is provided toward the object to be coated. If necessary, a guide pipe (39) is attached to the opening (36), and the opening (39H) is opened laterally or downwardly at the required position. opening (39
D) and use it as the application part. A heating and/or cooling device M (40) is installed above the guide pipe (39), and a heating device 2 is installed at the bottom of the booth (34). (44) is installed. The spray nozzle (31) and its gun (33) are
Either air spray type or airless spray type may be used. In the same figure, an airless spray circulation type (45) is shown. The gun (33) is opened and closed by operating air, and the air piping from the gun is connected to a solenoid air valve (47), which is electrically connected to a timer (TM). Furthermore, if necessary, a carrier gas (Ca) supply device (49) is provided at the bottom of the booth (34). In the above case, the roll (32) is shown as being independent, but if necessary, the spray (sp,
. ) Removal device for liquid or molten matter attached to the lower part outside the range (
9A) is installed. The scraper is shown in the figure. Alternatively, the lower part of the booth (34) may be used as a temporary storage tank, and the liquid or melt of the same type as that to be sprayed may be stored at a certain required level (Lv■A or Lv■A).
The roll (32) is positioned so that the lower part of the roll (32) is immersed in the water (see Figure 2). Furthermore, in this case,
The above level of role (32) (Lv1A or Lv4A)
The liquid film thickness adjustment device is located at the upper part of the rise! (7A)
(doctor roll or doctor blade) may be attached. 4) Running belt type A circulating running belt is used instead of the roll described in 3) above. Please refer to Figure lθ. A vertical running belt (52) is installed inside the vertical spray booth (54).
). Toward the flat part surface on one side of the belt (52) or the belt surface on the roll,
Liquid (L) or melt (M) spray nozzle (51)
will be established. It is desirable that a back amplifier plate (58) be attached to the back side of the flat part of the belt. The bottom of the booth (54) is provided with a discharge port (68) from which a discharge pipe (7l) and/or a return pipe (72) to the liquid or melt supply tank (73) is provided. It will be established. Moreover, the upper part of the booth (54) is an opening (66).
) L is used as the coating section, above which a holder (80) or conveyor for the object to be coated (0.) is provided, and if necessary, a corona pin (76) for static electricity is provided toward the object to be coated. In addition, if necessary, the guide pipe (69) may be inserted into the opening (66).
) and open laterally at the required position (69B
) or open downward (69D) to serve as the application part. In addition,
A heating and/or cooling device (7) is provided on the guide pipe (69).
0), but there is also a heating device (
74) is installed. The spray nozzle (51) and its gun (53) are
Either air spray type or airless spray type may be used. In the figure, an airless spray circulation type (75) is shown. The opening/closing operation of the gun (53) is performed by operating air, and the air piping from the gun is connected to a solenoid air valve (-77), and the solenoid is electrically connected to a timer (TM). Further, if necessary, a carrier gas (C
The supply device (79) of a) is provided. In the above case, the running belt (52) is shown as being independent, but if necessary, the running belt (52) may be placed on the surface of the belt (52) and spray<spxx)[! A device (20A) for removing deposits of liquid or molten material is attached to the lower part of the outside. The scraper is shown in the figure. Or, please visit the booth above (5
The lower part of 4) is used as a temporary storage tank, and the liquid or melt of the same type as that to be sprayed is kept at a certain required level (L).
v3A or Lv4Δ), and then press the running belt (52
) is positioned so that the lower part of the sixth
(see figure). Furthermore, in this case, if necessary, a running belt (5
2) The liquid film thickness adjustment device t! (19A
) (doctor roll or doctor blade) may be attached. Although the above running belt is vertical, it can also be horizontal. Please refer to Figure 8. That is, the running belt (
A spray nozzle (2l) is provided above the flat part of the spray nozzle (2l). Furthermore, the lower part of the horizontal running belt (l5) is immersed in the liquid level (Lv1A) shown by the imaginary line stored in the temporary storage tank of liquid or molten material at the bottom of the booth (54) as shown in Figure 1O. There are some things. Further, as shown in FIG. 8, a liquid film thickness adjusting device M (25) is provided at the rising portion of the running belt (15) from the liquid level (Lv1A), as also shown by the imaginary line in FIG. There are some things. Finally, as shown in Fig. 8, the running belt (l5
) Removal device for liquids etc. 2 in the lower part! Some are equipped with a scraper (23) in the figure. In addition to the above-mentioned scraper, removal devices include rollers (see Figure 11), air knives (see Figure 12), vacuum nozzles (see Figure 13), and the like. [Function] As mentioned above, there are two types of this device: a roll type and a running belt type, so we will explain each of these items separately. A) Roll type Please refer to Figure 9. The liquid or melt is sprayed (SP) from a nozzle (31) toward the surface of the roll (32) by an air spray method or an airless spray method, and is sprayed onto the surface of the roll (32) that is rotating downward. It is hit by. The mist, that is, the particles in the spray, are crushed and fragmented by the collision, and become finer particles (Ps).
becomes. On the other hand, the above mist adheres to the roll surface, forming a layer with a constant thickness (1). Regarding these behaviors,
This is as explained in detail in section 1) ① of the roll case in the above method. In this way, the above spray (sp,.) is applied to the surface of the layer of a certain thickness, and uniform particles are obtained. Depending on whether these particles are liquid or Ts melt,
As explained in 1) 10 above, these generated particles may be heated or cooled with a carrier gas. That is, as shown by the imaginary line in FIG. 9, it is obtained by introducing the gas from below the booth (34) using a heating or cooling type gas supply device (49). As a result of the above spraying, the excess liquid or melt is discharged to the outside through the outlet (38) at the bottom of the booth (34), or is passed through the return pipe (42) to the liquid or melt supply tank ( 43) Returned to the inside. Also, the spray from the nozzle (31) is controlled by the gun (
33) due to intermittent opening and closing. It results in an intermittent spray, thereby reducing the number of particles generated, i.e. reducing the density of their aerosol to a lower range. ! You can also. In this way, the atomized particles made of particles move upward, reach the opening (36) of the coating section, and are deposited or coated on the object (04) to be coated. When necessary, it is applied electrostatically. In addition, if necessary, as shown by the imaginary line in the figure, the guide tube (39) may be used to
Guide you to the required location. The coating work is performed by opening it laterally (39H) or downward (39D). The above describes the operation of the basic type of the device of the present invention, but
When the bottom of the roll is immersed in a liquid or melt to form a film layer of a certain thickness on the roll surface and then sprayed onto the surface, the above-mentioned booth (34 ) is used as a temporary storage tank, and a certain level (L viA or L
v2A) has a structure for storing liquid or molten material, and its operation is as described in 1), item 10 of the method, so the explanation will be omitted. In addition, in the above-mentioned roll immersion type, the liquid film thickness adjusting device (7
A) The operation of the device when a (doctor roll or doctor blade) is provided to form a film of a required constant thickness is as described in 1) 10 of the above method. Furthermore, instead of using the roll dipping type as described above, in the first basic single roll type, the removal 1? When using a device equipped with a scraper (9A) in the imaginary line in Fig. 1, the roll surface is constantly cleaned and the above-mentioned play hits the hard roll surface, so the crushing force is reduced. is more accurate and always yields uniform particles. In carrying out these methods, the particles may be charged during spraying or upon impact with a circulating object.

The reason is that by being charged, the particles repel each other, preventing them from agglomerating and further promoting miniaturization. B) Running belt type Please refer to Figure 1O. The liquid or melt is sprayed from a nozzle (51) by an air spray method or an airless spray method toward the flat part surface of the vertical running belt (52) or the surface of the belt on the roll (SP), A mist or particles of liquid or melt is applied. The particles in the spray mist are fragmented by the collision, and a film layer of a constant thickness is formed on the surface of the running belt (52). As mentioned above. In addition, the generated particles are heated or cooled by carrier gas (CG), and the remaining liquid or melt is supplied to the outside from the outlet (68) at the bottom of the booth (54) or via the return pipe (72). Returning to the tank (73) and intermittent spraying as an example of work are the same as in the case of the roll type, so detailed explanation will be omitted. In addition, the effect of a structure in which the lower part of the running belt (52) is immersed in the same type of liquid or melt as the spray is as described in method 2) 1) of the invention above, and the effect of the liquid on the structure is as follows. Film thickness! l3I'll! Souiii (19
The effect of adding A) is the same as in method 2) Method 2) As in 1), the explanation will be omitted. Furthermore, the operation of the vertical running belt made into a horizontal type is described in the method 2) of the above-mentioned invention, and the serial numbers of -■, 1■, and 1■ are included, and the explanation thereof will be omitted. [Effects] According to the method and apparatus of the present invention, the particle size of liquid or melt particles can be selected,
Particles with a uniform particle size can always be generated and coated at the same time, resulting in a coated film with a uniform thickness or an extremely thin film, which can contribute to improving the quality of the coated film. ．．

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the method and operation in a typical roll type according to the method of the present invention (the present invention is applied except as otherwise specified). Explanatory diagram when immersed in
In Figure 2), the liquid film thickness! 111! ! Figure 4 is an explanatory diagram of the case in which a device d for removing deposits of liquid or molten material is installed on the basic roll (Figure 1). Explanatory diagram when a vertical running belt is used. Figure 6 shows a case where the lower part of the above running belt is immersed in a liquid or melt, and a case where a liquid film thickness adjustment device is installed on the same belt. Fig. 7 is an explanatory diagram of the above (Fig. 5) when a device for removing deposits of liquid or melt is provided on the running belt. Fig. 8 is an explanatory diagram of the above (Fig. 5).
Fig. 5 to Fig. 7) Explanatory diagram when a vertical running belt is made into a horizontal type Fig. 9 is a sectional side view of the roll type structure in the device of the present invention Fig. 10 is a side sectional view of the structure of the running belt type Figure II is a side view of the roll-type deposit removal device. Figure 12 is a side view of the air knife type. Figure 13 is a side view of the vacuum type. Figure 14 is a side view of the vacuum type. Fig. 15 is a side view of a conventional spray hard plate collision type particle generation method. Fig. 16 is an explanatory view of the state in which liquid or melt is layered on a hard plate in the above method. Explanation of important stroke numbers

Claims (31)

[Claims] (1) The method is characterized in that a liquid (L) is sprayed from a nozzle (1) onto the surface of a circulating object (2), and the spray stream is fragmented by collision and particles are applied to a base material. Method of producing and applying liquid particles. (2) The method for producing and applying liquid particles according to claim 1, wherein the circulating object is a roll (2). (3) The method for producing and applying liquid particles according to claim 1, wherein the circulating object is a running belt (12). (4) The liquid particles according to claim 2 or 3, wherein a lower part of the roll or a lower part of the running belt is immersed in the same type of liquid as the particles. Generation application method. (5) Formation and application of liquid particles according to claim 4, characterized in that a liquid film thickness adjusting device (7 or 19) or the like is provided on the surface of the roll or the surface of the running belt. Method. (6) Liquid particles according to claim 2 or 3, characterized in that a device (9 or 20) for removing adhering liquid is provided on the surface of the roll or the surface of the running belt. generation application method. (7) The method for producing and applying liquid particles according to claim 1, wherein the liquid is pressurized in advance. (8) The liquid removed from the circulating object by the liquid film thickness adjustment device or removal device is stored in a pan or a partial storage tank, and is returned to the supply tank. The method for producing and applying liquid particles according to item 1, item 5, or item 6. (9) Opening and closing the spray gun (33) intermittently, thereby intermittently spraying from the gun nozzle (31), and adjusting the density of the generated smoke within a lower range. A method for producing and applying liquid particles according to claim 1, characterized in that: (10) The method for producing and coating particles of a melt according to claim 1, wherein the liquid (L) is a melt (M). (11) In a liquid spray collision type particle generator,
a. A rotary drive device (35) is installed in the spray booth (34).
); b. A liquid spray gun nozzle (31) is provided facing the surface of the roll (32); c. An opening (36) is provided above the booth (34) to serve as a coating section, and if necessary, a corona pin (46) for electrostatic charging is provided.
), and d. An outlet (38) is provided at the lower bottom of the booth (34).
is provided, and the opening is connected to a discharge pipe (41) and/or a return pipe (
42) to be piped to a liquid supply tank (43); e. b. The gun nozzles (31, 33) described in paragraph 1 are of an airless spray type or an air spray type, and are connected to the respective devices (45) via piping.A device for producing and applying liquid particles. (12) Connect the lower part of the booth (34) to the liquid temporary storage tank (
37), and an automatic level holding device (48) is provided to maintain a level (Lv_1A or Lv_2A) at which the lower part of the roll (32) is immersed. Liquid particle production coating equipment. (13) Liquid film thickness adjusting device (
7A). The liquid particle generation coating device according to claim 11, characterized in that it is provided with: 7A). (14) The liquid particle production and coating device according to claim 11, characterized in that a device (9A) for removing liquid adhering to the surface of the roll (32) is provided. (15) If the removal device is a scraper (9A) or a roller (
94), air knife (96), vacuum nozzle (98)
), etc., according to claim 14. (16) The liquid particle generation and coating device according to claim 11, characterized in that a gas supply device (49) with a heating and/or cooling device is provided in the lower part of the booth (34). (17) The liquid particle generation and coating device according to claim 11, wherein a guide pipe (38) is attached to the upper opening (36) of the booth (34). (18) A gas particle separator (
46). The liquid particle generation coating device according to claim 11, wherein (19) The gun (33) is connected to the air solenoid valve (47).
12. The liquid particle generation and application device according to claim 11, which is connected to a timer (TM) by piping and electrical connection via a timer (TM). (20) The apparatus for producing and applying particles of a melt according to claim 11, wherein the liquid is a melt. (21) In a liquid spray collision type particle generation coating device, a. A circulating running belt (52) is provided vertically in the spray booth (54), and b. A surface of the running belt (52). c. An opening (66) is provided above the booth (54), and if necessary, a corona pin (76) for electrostatic charging is provided; d. , a discharge port (68) is provided at the lower bottom of the booth (54).
is provided, and the opening is connected to a discharge pipe (71) and/or a return pipe (
72) to a liquid supply tank (73); e. b. The gun nozzles (51, 53) described in paragraph 1 are of an airless spray type or an air spray type, and are connected to the respective devices (75) through piping.A device for producing and applying liquid particles. (22) A circulating running belt may be installed vertically.
22. The liquid particle generation and coating apparatus according to claim 21, wherein a horizontal circulating belt is provided. (23) Connect the lower part of the booth (54) to the temporary liquid storage tank (
67), and an automatic level holding device (78) is provided to maintain a level (Lv_3A or Lv_4A) at which a portion of the lower part of the running belt (52) is immersed. Apparatus for producing particles of the liquid described above. (24) The liquid particle generation and coating device according to claim 21, characterized in that a liquid film thickness adjusting device (19A) is provided on the surface of the running belt (52). (25) The liquid particle generation and application device according to claim 21, characterized in that a device (20A) for removing liquid adhering to the surface of the running belt (52) is provided. (26) The removal device includes a scraper (20A) or a roller (94), an air knife (96), a vacuum nozzle (9
8) etc. The apparatus for producing and applying liquid particles according to claim 25. (27) The liquid particle generation and coating device according to claim 21, characterized in that a gas supply device (79) with a heating and/or cooling device is provided in the lower part of the booth (54). (28) The liquid particle generation and application device according to claim 21, wherein a guide pipe (69) is attached to the upper opening (66) of the booth (54). (29) A gas particle separator (
76) is connected to the liquid particle generation coating device according to claim 21. (30) The gun (53) is connected to the air solenoid valve (77).
22. The liquid particle generation and application device according to claim 21, which is connected to the timer (TM) via piping and electrical connection. (31) The apparatus for producing and applying particles of a melt according to claim 21, wherein the liquid is a melt.