JP2007160190A - Method and apparatus for coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for coating which enables an efficient coating while preventing adhesion of a coating base material to the inside surface of a rotation drum. <P>SOLUTION: The coating method comprises supplying a glaceing solution to object articles, e.g. tablets, contained in a rotation drum to glace the articles, while rotating the rotation drum. It performs repeatedly the first process S+D of (D) drying while (S) supplying the glaceing solution at the same time and the second process of carrying out the process (S) of supplying the glaceing solution and the process (D) of drying separately, with the first rest process P1 of carrying out the procedures without a supply of a gas and the second rest process P2 of carrying out the procedures with a supply of the gas arranged between the processes (S) and (D). During the first process, cool air is always supplied, and the rotary drum is cooled during the first process, the second rest process of the second process and the drying process. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a coating method and apparatus using a drum-shaped rotating container, and more particularly to a technique effective when applied to a sugar coating process for tablets and the like.

  Conventionally, many sugar-coated products such as tablets and confectionery have been manufactured using a coating apparatus having a drum-shaped rotating container (rotating drum) as in Patent Document 1. In such a coating apparatus, in the sugar coating process, first, an object to be processed such as a tablet is stored in a rotating drum. Thereafter, the coating liquid (sugar coating liquid) is supplied into the drum while rotating the rotating drum, and the coating base material is adhered to the outer periphery of the workpiece. During the coating process, hot air of about 50 to 80 ° C. is appropriately supplied to the object to be processed, and the coating substrate is evaporated and dried on the surface of the object to be processed by this hot air to form a coating layer. Then, the operation of adding the coating liquid and drying is repeated, and a number of coating layers are stacked on the outer periphery of the tablet to form a sugar coating layer.

  However, during the coating process, the rotating drum itself is also heated by the warm air, so that the coating base material is solidified and adhered to the inner surface of the rotating drum. If this solidified material peels off from the drum inner surface and adheres to the product, it will cause defective products such as bots and protrusions. Therefore, it is necessary to appropriately clean the inside of the rotating drum during the coating process. For example, in sugar coating, the rotating drum is stopped when the amount of sugar coating residue attached to the inner surface of the drum increases, and the adhering residue is removed from the drum. It is discharging.

  Therefore, in order to suppress the solidification / adhesion of the coating substrate on the inner surface of the rotating drum, in Patent Document 1, two air ducts are provided in the rotating drum, and cool air is supplied from one duct to the rotating drum to cool the drum. is doing. Accordingly, the temperature of the rotating drum is slightly lower than that of the object to be processed, and adhesion of sugar coating residue to the drum inner surface is suppressed.

  Patent Document 2 describes a coating method in which the coating liquid supply process and the drying process in the sugar coating process as described above are optimized to shorten the processing time. As described above, in the sugar coating treatment, the addition and drying of the sugar coating liquid is repeated, and at that time, the four unit operations of adding the coating liquid, spraying the powder, suspending, and drying are generally sequentially repeated. However, in order to shorten the processing time, if the coating liquid is poured and dried at the same time during the processing, the coating material is dried in a state where it does not spread sufficiently on the surface of the workpiece, and the coating surface becomes rough. There is a fear. Therefore, in the sugar coating process, it is necessary to provide a rest time after the pouring process due to the spreading of the coating solution, and the treatment time must be increased accordingly.

On the other hand, in order to shorten processing time, in patent document 2, the processing method which repeats the 1st process which adds a sugar-coating liquid separately and drying and the 2nd process which performs them simultaneously is shown. In this case, if the final step of the sugar coating treatment is the first step, the rough skin produced in the second step is also covered and repaired in the final step, and finally a sugar-coated product free of rough skin is formed on the surface. The Moreover, since the time of the 2nd process which performs addition and drying simultaneously is shorter than the 1st process which performs them separately, the whole processing time is shortened by the part by including a 2nd process. That is, with the method of Patent Document 2, it is possible to shorten the sugar coating process time while satisfying the specifications of the final product.
JP 2000-189059 JP 61-204032 A

  As described above, in the device of Patent Document 1, it is disclosed that the adhesion of sugar coating residue to the inner surface of the drum can be reduced by supplying warm and cold air to the two air ducts. Due to the supply gas, the surface drying of the object to be processed proceeds, the spreading of the coating liquid becomes insufficient, and the surface state may be roughened. That is, although the apparatus of Patent Document 1 suggests a method for suppressing adhesion to the container wall surface, there is room for improvement in a specific process, and countermeasures have been demanded.

  An object of the present invention is to provide a coating method and a coating apparatus capable of performing an efficient coating process while preventing the coating substrate from adhering to the inner surface of a rotating drum.

  In the coating method of the present invention, an object to be processed is accommodated in a hollow processing container disposed so as to be rotatable about a rotation axis, and a coating substance is supplied into the processing container to rotate the processing container. A coating method for performing a coating process on the object to be processed, the first step of performing drying while cooling the processing container and supplying the coating substance, and supplying the coating substance A process and a drying process that is performed while cooling the processing container, and a first pause process that is performed without supplying gas between the supply process and the drying process; A second step having a second pause step performed while cooling the processing container, and repeatedly performing the first step and the second step.

  In the present invention, the first pause process, which is performed without supplying gas, between the supply process and the drying process of the second process in which the supply process and the drying process of the coating substance are performed separately, and the gas And the second pause step that is performed while supplying the coating material, the coating substance spreads on the workpiece in the first pause step, and the coating substance is applied to the workpiece surface before entering the drying step. Since it spreads sufficiently, the rough surface of the coating can be suppressed. In addition, since the processing container is cooled during the second pause process and the drying process in the first process and the second process, the processing container is cooled in each process, and adhesion of the sugar coating liquid to the processing container is suppressed. . In particular, in the cooling in the second pause process, the processing container is cooled before entering the next drying process, and adhesion of the sugar coating liquid to the processing container during the drying process is more effectively suppressed.

  In the coating method, a sugar coating liquid may be used as the coating substance, and cold air of 0 to 25 ° C. may be used as the gas. Thereby, a processing container is cooled and adhesion of the sugar coating liquid to a processing container is suppressed. Furthermore, it is preferable that the second process is performed after the first process to finish the coating process of the object to be processed.

  On the other hand, a baffle device having a hollow structure may be arranged in a rolling flow of the object to be processed in the processing container, and the baffle device may be cooled by circulating a refrigerant inside the baffle device.

  The coating apparatus of the present invention includes a hollow processing container that is rotatably arranged around a rotation axis, a coating substance supply unit that supplies a coating substance to an object to be processed contained in the processing container, A coating apparatus comprising a baffle device disposed in a rolling flow of the object to be processed in the processing container, wherein the baffle device is formed in a hollow structure, and a refrigerant circulates in the inside thereof It has a passage.

  In the present invention, a baffle device having a hollow structure is arranged in a rolling flow of an object to be processed, and a baffle device itself is circulated in the rolling flow by circulating a refrigerant through a refrigerant passage provided therein. Since it is cooled, it becomes difficult for the coating substance to adhere to the baffle device.

  According to the coating method of the present invention, an object to be processed is accommodated in a hollow processing container that is rotatably arranged around a rotation axis, and a coating substance is supplied into the processing container to rotate the processing container. In the coating method for coating the object to be processed, the first step of performing drying while supplying the coating substance and the supply process of the coating substance and the drying process are performed separately, and the supply process By repeatedly performing a first pause step that is performed without supplying gas and a second pause step that is performed while supplying gas between the drying step and the drying step, the first step is performed. In the pause process, the coating substance spreads on the workpiece, and the coating substance spreads sufficiently on the workpiece surface before entering the drying process. It is. Thereafter, in the second pause step, the processing vessel is cooled before entering the next drying step, so that the sugar coating liquid is prevented from adhering to the processing vessel during the drying step, and the incidence of defective products is reduced. Is possible. Moreover, since there are few deposits of a baffle apparatus, the frequency | count of cleaning of a coating apparatus and the cleaning man-hour can be reduced, and it becomes possible to aim at the productivity improvement of a coating process.

  According to the coating apparatus of the present invention, a hollow processing container disposed so as to be rotatable about a rotating shaft, and a coating substance supply means for supplying a coating substance to an object to be processed accommodated in the processing container; A baffle device disposed in a rolling flow of the object to be processed in a processing container, wherein the baffle device is formed in a hollow structure, and a refrigerant passage through which a refrigerant flows is provided. Therefore, by circulating the refrigerant inside the baffle device, the baffle device itself in the rolling flow is cooled, and the coating substance does not easily adhere to the baffle device. For this reason, the coating substance adhering to the baffle device is peeled off, and the occurrence of botches, protrusions, and the like can be suppressed, and the occurrence rate of defective products can be reduced. Moreover, since there are few deposits of a baffle apparatus, the frequency | count of cleaning of a coating apparatus and the cleaning man-hour can be reduced, and it becomes possible to aim at the productivity improvement of a coating process.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 are explanatory views showing a configuration of a coating apparatus in which the coating method according to the present invention is performed, in which FIG. 1 is a state when the coating apparatus is viewed from a side direction, and FIG. FIG. 3 shows a state seen from the back side. 4 and 5 are explanatory views showing the configuration of the rotating drum in the coating apparatus of FIG.

  The coating apparatus 1 shown in FIG. 1 is an apparatus generally called a pan coating apparatus, and granulates, coats, dries, mixes, etc., a workpiece by rotating a rotating drum and a processing gas and a coating substance passing through the rotating drum. The desired processing is performed. In this embodiment, as the coating apparatus 1, for example, an apparatus for coating a sugar-coating liquid mainly composed of a syrup obtained by dissolving white sugar in water is assumed on an object 2 to be processed such as tablets and confectionery. The coating apparatus 1 is provided with a rotating drum (coating pan) 3 which is a horizontal drum-shaped processing container for storing the workpiece 2. The rotating drum 3 includes a hollow main body portion 4 having a polygonal cylindrical shape or a cylindrical cross section, and end wall portions 5 provided on both ends of the main body portion 4 in the axial direction.

  Ventilation portions 6 through which a processing gas such as hot air or cold air circulates are provided at several places or around the periphery of the main body portion 4. An air supply / exhaust duct 11 is disposed on the outer peripheral side of the main body portion 4 so as to cover each ventilation portion 6. On the other hand, a first air duct 8 and a second air duct 10 are provided in the rotating drum 3 as air supply means. The 1st ventilation duct 8 and the 2nd ventilation duct 10 are arrange | positioned along with the approximate center upper part of the rotating drum 3, as shown in FIG. The processing gas introduced into the rotary drum 3 from the first air duct 8 or the second air duct 10 is discharged to the air supply / exhaust duct 11 through the ventilation portion 6.

  The first air duct 8 applies cold air (for example, about 0 to 25 ° C., preferably about 10 to 20 ° C.) to the rotating drum 3. The air outlet of the first air duct 8 is directed in the direction opposite to the workpiece 2 in the rotary drum 3 (the direction indicated by the arrow A in FIG. 4). The cold air blown out from the first air duct 8 is discharged from the ventilation portion 6 of the rotary drum 3 to the air supply / exhaust duct 11. Thereby, the temperature of the rotating drum 3 is controlled, and the temperature of the rotating drum 3 is maintained at a low temperature even during processing.

  The second air duct 10 supplies warm air (for example, about 40 to 90 ° C., preferably about 50 to 80 ° C.) to the workpiece 2 in the rotary drum 3. The 2nd ventilation duct 10 is orient | assigned to the to-be-processed object 2 in the rotating drum 3 (the arrow B direction). The hot air blown out from the second air duct 10 is discharged from the vent 6 to the air supply / exhaust duct 11 through the layer of the workpiece 2. Thereby, the temperature of the to-be-processed object 2 is controlled, and the sugar-coating liquid is dried and solidified.

  The air supply / exhaust duct 11 is further connected to a supply / exhaust jacket 23 having a first air supply port 12 and a second air supply port 13. The first air supply port 12 and the second air exhaust port 13 communicate with the air supply / exhaust duct 11 at a predetermined timing as the rotating drum 3 rotates. Usually, the air supply / exhaust duct 11 is provided in the second exhaust port 13 so as to communicate with the rotary drum 3 when it reaches a specific rotational position.

  A plurality of spray guns 15 (coating substance supply means) are installed inside the rotary drum 3. From the spray gun 15, a sugar coating liquid (coating substance) is sprayed in the form of a mist and supplied to the workpiece 2. After the sugar coating liquid is applied, the workpiece 2 rolls while being rubbed while being kneaded, and hot sugar is supplied when the sugar coating liquid spreads and spreads to some extent. Further, a baffle (baffle device) 22 is installed in the rotating drum 3 as shown in FIG. 4, and the mixing and stirring of the workpiece 2 in the rotating drum 3 is promoted. 6A and 6B are explanatory views showing the configuration of the baffle 22, wherein FIG. 6A is a side view thereof and FIG. 6B is a plan view thereof.

  The baffle 22 is formed in a hollow structure, and the inside thereof is a space portion (refrigerant passage) 33 through which a refrigerant (for example, cold water or cold air of about 5 ° C.) flows. The baffle 22 includes wing portions 31 a and 31 b arranged in the rolling flow of the workpiece 2 and a support bar 32 that supports the wing portions 31 a and 31 b and is attached to a fixed arm (not shown) in the rotary drum 3. ing. The wing portions 31a and 31b are formed in a hollow shape, and a space portion 33 is formed therein. Pipe-shaped sockets 34a and 34b communicating with the space portion 33 are provided on the upper edge portions of the wing portions 31a and 31b, respectively. Tubes (not shown) connected to the coolant supply source are attached to the sockets 34a and 34b. A refrigerant is supplied to the baffle 22 from a refrigerant supply source including a pump and a heat exchanger. Here, cold air is supplied from the socket 34a, and the warmed cold air is discharged from the socket 34b. By such a cooling mechanism, the baffle 22 is maintained at a low temperature even in the rolling flow of the workpiece 2.

  Rotating shafts 17a and 17b supported by bearings 16a and 16b are coaxially attached to both ends of the rotating drum 3, respectively. The rotary drum 3 is installed so as to be rotatable about the rotary shafts 17a and 17b. The rotating shaft 17b is driven via a chain 19 by a motor 18. The first air duct 8, the second air duct 10, and the second exhaust pipe 14 are fixed, and the rotary drum 3 and the air supply / exhaust duct 11 are rotated by a motor 18. Further, in FIG. 1, an opening 20 is provided at a substantially central portion of the left end wall portion 5 for use in charging the powder raw material and discharging the product. An inspection lid 21 that can be opened and closed is installed outside the opening 20.

  Next, the coating treatment according to the present invention will be described taking the production of sugar-coated tablets as an example. Here, first, a tablet such as a lactose tablet (for example, a diameter of 8 mm, 200 mg / T, hereinafter, an indication of a numerical example is omitted) is put in the rotating drum 3 as the object to be processed 2, and the motor 18 is driven to rotate the rotating drum 3 in the arrow X direction (forward rotation direction, see FIG. 4) via the chain 19 and the rotating shaft 17b (about 8 rpm). As shown in FIG. 4, with the rotation of the rotating drum 3, the tablet is lifted in the rotating direction along the main barrel portion 4 and the end wall portion 5 and falls inward, and rolls in the rotating drum 3. Do. A sugar coating liquid is sprayed from the spray gun 15 to the workpiece 2 while rotating the rotary drum 3. At this time, cold air or warm air is appropriately fed from the first and second air ducts 8 and 10 to solidify and form a sugar-coated film on the tablet.

  Here, in the coating method according to the present invention, in the sugar coating process, there are a first step of performing drying while supplying the sugar coating liquid, and a second step of performing the sugar coating liquid supply process and the drying process separately. By repeating them, a sugar coating layer is formed on the tablet. In this case, unlike the coating process of Patent Document 2 described above, in the coating process according to the present invention, two types of processes are set as the pause process in the second process. That is, between the supply process and the drying process, a first pause process that is performed without supplying gas and a second pause process that is performed while supplying gas are provided.

  In each step, the supply of gas from each of the air ducts 8 and 10 is also finely controlled. FIG. 7 is a table showing the processing steps in the coating method according to the present invention and the gas supply state in each processing step, and FIG. 8 is a graph showing the relationship between the processing time and the cumulative supply amount of the sugar coating liquid. 7 and 8, S indicates the supply (spraying) of the sugar coating liquid, P indicates the pause, D indicates the drying, and S + D indicates the process of simultaneously supplying and drying the sugar coating liquid. Further, the duct A indicates the first air duct 8 and the duct B indicates the second air duct 10. In this process, the first step (3 minutes) is performed, and then the second step (10-15 minutes) is performed as one unit, and this unit is performed a plurality of times (about 20-30 times). Repeat the sugar coating process.

As shown in FIG. 7, in the first step, the sugar coating liquid is supplied and dried simultaneously. For example, when the processing amount of the sugar-coated tablets is about 100 L, spraying the sugar-coating liquid (60 ° C., 340 to 900 mL / time) from the spray gun 15 and simultaneously supplying hot air from the second air duct 10 (70 ° C. , 12 m ³ / min). In the first step, cold air is also supplied from the first air duct 8 (10 to 15 ° C., 12 m ³ / min). Although the sugar coating layer is formed on the tablet by this first step, as described above, the surface of the coating layer may be roughened because pouring and drying are performed simultaneously. On the other hand, since cold air is supplied to the rotating drum 3 and the inner surface of the drum is cooled, adhesion of the sugar coating liquid is suppressed. Therefore, although there is a possibility of rough skin, it is possible to suppress the occurrence of defective products such as bots and protrusions due to peeling of the drum inner surface deposits.

  Next, in the second step, first, the sugar coating liquid is sprayed (S) (for 2 minutes). At this time, no gas is supplied from the first and second air ducts 8 and 10. Therefore, the sprayed sugar-coating liquid adheres to the tablet surface without being dried, and the occurrence of bocce or the like due to the dry powder can be suppressed. After the spraying step, the first pause step (P1) is performed (3.5 to 4 minutes). Also in this case, no gas is supplied from the first and second air ducts 8 and 10. In this first pause process, the sugar coating liquid spreads on the tablet, and the sugar coating liquid spreads sufficiently on the tablet surface before entering the drying process, so that rough skin on the coating surface is suppressed. Then, it moves to a 2nd pause process (P2), and cold air is supplied from the 1st ventilation duct 8 (0.5 minute). As a result, the inner surface of the rotating drum is cooled before entering the next drying step. In addition, although the 2nd pause process is based on the cold air supply and exhaust_gas | exhaustion from the 1st ventilation duct 8, it may supply a little warm air from the 2nd ventilation duct 10 as a preliminary | backup of a drying process.

  After the pause process, the drying process (D) is performed (4.5 minutes). In the drying process, gas is supplied from both the first and second air ducts 8 and 10. That is, while supplying the cool air from the first air duct 8 to cool the rotary drum 3, the warm air is supplied from the second air duct 10 to heat the workpiece 2 and dry the sugar coating liquid. In this case, the sugar coating liquid on the tablet is sufficiently spread in the previous pause step, and it is dried by the warm air from the second air duct 10 to form a coating layer without rough skin. Since this coating layer is formed on the coating layer of the first step, if the second step is arranged at the final stage of the coating process, even if rough skin occurs in the first step, it is covered and repaired. A beautiful sugar-coated layer can be formed. A sugar coating layer is formed on the outer periphery of the tablet by repeatedly executing the first and second steps.

  On the other hand, when the rotary drum 3 is warmed during the drying process, the sugar coating liquid adheres to the inner surface of the drum, and there is a risk that defective products may be generated due to the peeling of the deposits. On the other hand, in the coating process, the rotating drum 3 is cooled from the second pause process stage and further cooled by the cold air from the first air duct 8 in the drying process, so that the drum temperature is kept low, and the drum Adhesion of sugar coating liquid to the inner surface is suppressed. Therefore, it is possible to suppress the occurrence of botches or the like due to the peeling of the drum inner surface deposits, and to reduce the occurrence rate of defective products. In addition, since there are few deposits on the inner surface of the drum, the number of cleanings and the number of cleaning steps of the rotating drum 3 can be reduced, and the coating process can be efficiently performed correspondingly.

  Further, the workpiece 2 that rolls in the rotary drum 3 is mixed and stirred by the baffle 22 during the coating process. In a conventional baffle (static baffle) having the same outer shape as that shown in FIG. 6, when used for sugar coating, there is a tendency that tablets and sugar coating liquid easily adhere to the inner surfaces of the wing portions 31a and 31b. On the other hand, in the coating apparatus, the baffle 22 has a hollow structure, and cold water is circulated through the baffle to cool the baffle itself. Occurrence is suppressed.

It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.
For example, in the above-described embodiment, the form in which the coating process is performed while cooling the rotating drum 3 using the same device as that of Patent Document 1 has been described, but the cooling method of the rotating drum 3 is based on the first air duct 8. However, the present invention is not limited to this cold air supply, and various methods such as spraying cold air around the outer periphery of the rotating drum 3 or spraying cold water can be adopted. For example, instead of adopting the first air duct 8, when cold air is supplied from the first air supply port 12 to the air supply / exhaust duct 11 and the air supply / exhaust duct 11 reaches the rotational position above the rotary drum 3, Cold air may be supplied from the duct 11 to the rotating drum 3. Further, the coating apparatus itself is not limited to the above-described form, and the method of the present invention can be applied to a so-called jacketless type coating apparatus that does not have the air supply / exhaust duct 11 outside the rotating drum 3. Further, the rotary drum 3 is not limited to a horizontal rotary drum that rotates around a horizontal axis, and may be a tilted rotary drum in which the rotary axis is inclined with respect to the ground plane.

  On the other hand, the object to be treated in the present invention is not limited to tablets such as the above-mentioned lactose tablets, and foods such as confectionery and gum, other pharmaceuticals, and the like are also applicable. In addition to the syrup obtained by dissolving sugar in water, sugar coating liquids of various specifications such as those obtained by adding various medicinal ingredients, flavors, pigments and the like can be applied. The various numerical values described above are merely examples, and it goes without saying that the values can be changed as appropriate.

It is explanatory drawing which shows the structure of the coating apparatus with which the coating method by this invention is implemented, and has shown the state which looked at the said coating apparatus from the side surface direction. It is explanatory drawing which shows the state which looked at the coating apparatus of FIG. 1 from the front direction. It is explanatory drawing which shows the state which looked at the coating apparatus of FIG. 1 from the back direction. It is explanatory drawing which shows the structure in the rotating drum in the coating apparatus of FIG. It is explanatory drawing which shows the structure in the rotating drum in the coating apparatus of FIG. It is explanatory drawing which shows the structure of a baffle, (a) is the side view, (b) is the top view. It is a table | surface which shows the gas supply state in each process process in the coating method of this invention. It is a graph which shows the relationship between processing time and the cumulative supply amount of sugar-coating liquid.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coating apparatus 2 To-be-processed object 3 Rotating drum (processing container)
DESCRIPTION OF SYMBOLS 4 Main trunk | drum 5 End wall part 6 Ventilation part 8 1st ventilation duct 10 2nd ventilation duct 11 Exhaust duct 12 1st supply port 13 2nd exhaust port 14 2nd exhaust pipe 15 Spray gun (coating substance supply means)
16a, 16b Bearings 17a, 17b Rotating shaft 18 Motor 19 Chain 20 Opening 21 Inspection lid 22 Baffle (baffle device)
23 Supply / Exhaust Jacket 31a, 31b Wing 32 Support Rod 33 Space 34a, 34b Socket

Claims (5)

The object to be processed is accommodated in a hollow processing container that is arranged to be rotatable around a rotation axis, and a coating substance is supplied into the processing container and the processing container is rotated to coat the object to be processed. A coating method for performing a treatment,
A first step in which drying is performed while cooling the processing vessel and supplying the coating material;
A first pause step in which a supplying process of the coating material and a drying process performed while cooling the processing container are performed separately, and gas is not supplied between the supplying process and the drying process; A second step having a second pause step that is performed while supplying gas and cooling the processing vessel,
A coating method comprising repeatedly performing the first step and the second step.   The coating method according to claim 1, wherein the coating substance is a sugar coating liquid, and the gas is cold air of 0 to 25 ° C.   3. The coating method according to claim 1, wherein the second process is performed after the first process to finish the coating process of the object to be processed.   The coating method according to any one of claims 1 to 3, wherein a baffle device having a hollow structure is disposed in a rolling flow of the object to be processed in the processing container, and a refrigerant is circulated inside the baffle device. And the baffle device is cooled. A hollow processing container rotatably disposed around a rotation axis, a coating substance supply means for supplying a coating substance to an object to be processed accommodated in the processing container, and the object in the processing container A coating apparatus comprising a baffle device disposed in a rolling flow of a processed material,
The said baffle apparatus is formed in the hollow structure, and has a refrigerant path through which a refrigerant | coolant distribute | circulates in the inside.

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