JP2017109151A - Coating apparatus and coating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid agent coating apparatus and a coating method which enable not only continuous coating patterns, but also independent coating patterns.SOLUTION: A coating apparatus 1 comprises: a drum storage chamber 40, formed in a housing 2 and having a supply port 30 of a coating liquid A; a coating liquid reception part 53, stored in the drum storage chamber 40, having a first drum diameter R2 smaller than the storage diameter R1 at both ends of the drum storage chamber 40 and including an engraved groove part 51 and a non-groove part 52 other than the same; a drum 50, having a second drum diameter R3 substantially the same as the storage diameter R1 and located at both ends of the coating liquid reception part 53 and including a seal part 54 for sealing a gap with the housing 2; and a nozzle 60 coming in contact below the coating liquid reception part 53 of the drum 50, extending over the whole of the same in a longitudinal direction, and having a nozzle discharge port 61, where the coating liquid reception part 53 receives the coating liquid A over the whole area to discharge the coating liquid A received in the groove part 51 out of the nozzle discharge port 61 when the groove part 51 turns downward.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a coating apparatus and a coating method, and more particularly to a liquid coating apparatus and a coating method.

  2. Description of the Related Art Conventionally, as an application apparatus that applies an application liquid such as an adhesive to an object, for example, an apparatus provided with a nozzle having a slot-like hole or a nozzle having a plurality of small holes arranged linearly is known.

  For example, in Patent Document 1, in such a coating apparatus, it is easy to apply a low basis weight of a hot-melt adhesive to a sheet, and it is possible to perform a clean pattern application, and at high speed. In the manufacturing method of an absorbent article which has the coating process which coats a hot-melt type adhesive agent on a sheet for the purpose of providing the manufacturing method and apparatus for the absorbent article which enable production The process uses a curtain coater that discharges a hot melt adhesive in a molten state into a curtain shape using a heated gas flow from a nozzle having slot-shaped holes or a nozzle having a plurality of small holes arranged linearly. And the manufacturing method characterized by being the coating process which coats the said hot-melt-type adhesive agent on the said sheet | seat is disclosed.

  However, in the above manufacturing method, the shaft (drum) carved with a groove is rotated to apply a coating pattern as the groove carved into the surface of the shaft. Due to the structure that cannot be applied, there is a problem in that an independent coating pattern that is not continuous cannot be applied.

  This point will be schematically described with reference to FIG. 8A is a front view of the drum, FIG. 8B is a front view of the drum attached to the housing, FIG. 8C is a front view of the nozzle further attached below the drum, and FIG. ) Is a side sectional view of the γ-γ line. As shown in these drawings, in the prior art, the supply port 301 of the coating liquid A and the nozzle discharge port 611 are connected to each other through a groove portion 511 engraved in the drum 501 as a coating pattern. The coating liquid A cannot be applied to the surface. That is, in the prior art, since the flow path from the supply port 301 of the coating liquid A to the nozzle discharge port 611 is engraved on the surface of the drum 501, the unconnected portion cannot be applied. In FIG. 8, 541 indicates a seal portion, 21 indicates a housing, 201 indicates a flow path of the coating liquid A, and 601 indicates a nozzle.

JP-A-6-237957

  This invention is made | formed in view of the said situation, and it aims at providing the application | coating apparatus and coating method of the liquid agent which can give not only a continuous coating pattern but an independent coating pattern.

The present invention is grasped by the following composition.
(1) A first aspect according to the present invention is a coating apparatus, a housing, a drum storage chamber formed in the housing and having a coating liquid supply port, and a drum stored in the drum storage chamber. And a coating liquid receiving portion having a first drum diameter smaller than the accommodation diameter at both ends of the drum accommodation chamber, including a carved groove portion and other non-groove portions, and substantially the same as the accommodation diameter. A drum having a second drum diameter, including a seal portion at both ends of the coating liquid receiving portion and sealing between the housing, and a lower portion of the drum in contact with the coating liquid receiving portion; A nozzle having a nozzle discharge port extending over the entire length in the longitudinal direction, the coating liquid receiving portion of the drum receiving the coating liquid over the entire area, and the groove portion of the coating liquid receiving portion of the drum Facing down When, wherein the coating solution the is received in the groove is discharged from the nozzle discharge opening.

(2) In the configuration of (1), the nozzle has a drum contact surface formed in a concave curved surface having a smaller curvature than the first drum diameter in a side view, and the coating liquid receiving portion of the drum The opening of the nozzle discharge port provided on the drum contact surface is sealed by the non-groove so that the coating liquid is not discharged from the nozzle discharge port when the non-groove portion is directed downward. Good.

(3) In the configuration of the above (1) or (2), the nozzle discharge port may be composed of a plurality of through holes arranged in a row or in a staggered manner in multiple rows in the longitudinal direction of the nozzle. .

(4) A second aspect of the present invention is a coating method, the step of preparing a coating device in which a drum storage chamber having a coating liquid supply port is formed in a housing, and both ends of the drum storage chamber And a coating liquid receiving portion including a groove portion carved as a coating pattern and other non-groove portions, and a second drum diameter substantially the same as the housing diameter. A step of supplying the coating liquid to the drum housing chamber in which a drum including a sealing portion at both ends of the coating liquid receiving portion and sealing the housing is housed; and the coating liquid of the drum A step of discharging the coating liquid from a nozzle discharge port provided on a drum contact surface of a nozzle that is in contact with a lower portion of the receiving portion and extends over the entire length in the longitudinal direction. The coating liquid receiving portion of the drum receives the coating liquid over the entire area, and when the groove portion of the coating liquid receiving portion of the drum faces downward, the coating liquid received in the groove portion is It discharges from a nozzle discharge port, It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, the application | coating apparatus and coating method of a liquid agent which can give not only a continuous coating pattern but an independent coating pattern can be provided.

It is a figure which shows schematically the side cross section of the center part of the coating device which concerns on embodiment of this invention. It is a figure which shows the application pattern engraved on the drum of the coating device of embodiment of FIG. 1, and the same application pattern transcribe | transferred to the target object. It is the figure which cut | disconnects and shows the principal part of the coating device which concerns on embodiment of this invention in the alpha-alpha line cross section of FIG. 1, (a) is a front view of a drum, (b) attached the drum to the housing. The front view of a state, (c) is the front view of the state which attached the nozzle further below the drum, (d) is the beta-beta line side sectional view of (c). It is a figure which expands and shows the relationship between the drum and nozzle of the coating device which concerns on embodiment of this invention from the front. It is a figure which shows the relationship between the drum and nozzle of the coating device which concerns on embodiment of this invention seeing from a side cross section, Comprising: (a) is a state when the groove part of a drum has come to the position of the discharge port of a nozzle, (b) Indicates the sealing state when the non-groove portion of the drum comes to the position of the nozzle outlet. It is a figure which shows the example of the various coating pattern given by the coating device which concerns on embodiment of this invention, Comprising: (a) is a case where a circular application pattern is given using a V-shaped groove part, (b) is a triangle A case where a patch-like coating pattern is applied using the groove portion is shown. It is a figure which shows operation | movement of the drum at the time of giving the emblem-like application pattern of FIG.6 (b), (a) is sectional side view, (b) is a front view corresponding to each step of (a), ( (c) is a figure which shows the state in which the emblem-like application | coating pattern is given to a target object in steps. It is a figure which shows the principal part of the coating device which concerns on a prior art, (a) is a front view of a drum, (b) is a front view of the state which attached the drum to the housing, (c) is a nozzle below a drum. Furthermore, the front view of the attached state, (d) is a γ-γ line side sectional view of (c).

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.

  FIG. 1 is a diagram schematically showing a side cross section of a central portion of a coating apparatus according to an embodiment of the present invention. The coating apparatus 1 includes a tank T that stores a coating liquid, a pump P that sucks and discharges the coating liquid from the tank T, and a supply pipe L that feeds the coating liquid discharged by the pump P. The coating liquid is supplied from the part SP. Inside the housing 2 constituting the outline of the coating apparatus 1, there are a buffer chamber 10 for storing the supplied coating liquid at one end, a flow path 20 for flowing the coating liquid down, a supply port 30 provided at the end of the flow path 20, A drum storage chamber 40 to which the coating liquid is supplied from the supply port 30 is provided. A drum 50 is accommodated in the drum accommodating chamber 40, and a nozzle 60 having a nozzle discharge port 61 is attached below the drum 50. The coating liquid is discharged from the nozzle 60 (nozzle discharge port 61) to the object SB through a connection port 43 (see FIG. 3C) provided below the drum storage chamber 40 and to which the nozzle 60 is attached. The

  As will be described in detail later, in the present embodiment, the central portion of the drum 50 has a smaller drum diameter than the accommodation diameter R1 at both ends of the drum accommodation chamber 40, that is, the first drum diameter R2, as shown in FIG. In addition, a gap 42 is provided between the inner wall of the drum storage chamber 40 and the surface of the drum 50. Accordingly, the coating liquid is received from the supply port 30 including not only the groove portion 51 as the coating pattern carved on the surface of the drum 50 but also the non-groove portion 52 where the groove portion 51 is not carved. Hereinafter, the central portion of the drum 50 including the groove portion 51 and the non-groove portion 52 is referred to as a coating liquid receiving portion 53.

  Since the drum storage chamber 40 and the drum 50 are configured as described above, for example, an application pattern as shown in FIG. 2 can be applied to the object SB. That is, even if the groove 51 engraved on the surface of the drum 50 is independent as shown in the drawing (not connected to either the coating solution supply port 30 or the nozzle discharge port 61), it passes through the gap 42. Since the coating liquid is received in the groove 51, the coating pattern can be transferred to the object SB. Hereinafter, the present embodiment will be described in detail with reference to FIGS. 3 to 7.

  FIG. 3 is a view of the drum storage chamber 40, the drum 50, and the nozzle 60 as viewed in the direction of the arrow, cut along the line α-α in FIG. 3A is a front view of the drum, FIG. 3B is a front view of a state where the drum is attached to the housing, FIG. 3C is a front view of a state where the nozzle is further attached below the drum, and FIG. (D) is a sectional side view of (c).

  As shown in FIG. 3A, the drum 50 includes a central coating liquid receiving portion 53 and seal portions 54 and 54 provided at both ends of the coating liquid receiving portion 53. As described above, the coating liquid receiving portion 53 includes the groove portion 51 engraved as a coating pattern and the other non-groove portion 52 that is not engraved. Here, as for the groove portion 51, a bent groove portion 51a which is an application pattern connected to the supply port 30 and the nozzle discharge port 61 and a circular groove portion 51b which is an independent application pattern are shown as examples. Each of the seal portions 54 and 54 includes an O-ring 54a formed of an elastic material and two flange portions 54b and 54c formed so as to sandwich the O-ring 54a.

  FIG. 3B shows a case where such a drum 50 is accommodated in the drum accommodating chamber 40 of the housing 2. As shown in the drawing, since the first drum diameter R2 corresponding to the non-groove portion 52 of the coating liquid receiving portion 53 of the drum 50 is smaller than the housing diameter R1 at both ends of the drum housing chamber 40, the coating is performed. A gap (space) 42 is generated between the liquid receiving portion 53 and the inner wall 41 of the drum storage chamber 40, and the coating liquid supplied from the supply port 30 is filled in the gap 42, and the coating liquid receiving portion 53 will receive the coating solution over its entire area. The seal portions 54, 54 are in contact with the inner wall 41 of the drum housing chamber 40, and seal the coating liquid filled in the gap 42 so that it does not leak from the gap 42. The drum diameters of the flange portions 54b and 54c of the seal portions 54 and 54, that is, the second drum diameter R3, are substantially the same as the accommodation diameter R1 of the drum accommodation chamber 40. Here, “substantially the same” does not mean that the dimensions coincide with each other, but is necessary and sufficient for the seal portions 54 and 54 at both ends of the coating liquid receiving portion 53 to seal between the housing 2. Means the same.

  FIG. 3C shows how the supply liquid is received and discharged from the nozzle discharge port 61 when the coating liquid A is supplied in such a state. Here, the nozzle 60 is attached to a connection port 43 provided below the drum storage chamber 40, and has a drum contact surface 62 (see FIG. 3D) in the longitudinal direction of the coating liquid receiving portion 53 of the drum 50. In contact over the entire length of When the coating liquid A is supplied from the supply port 30, it fills the gap 42, covers the non-groove part 52, and enters the bent groove part 51 a and the circular groove part 51 b of the groove part 51. And it discharges outside from the nozzle outlet 61 of the nozzle 60 below the coating liquid receiving part 53. FIG. 3D shows the state of FIG. 3C in a cross-sectional view taken along the line β-β.

  FIGS. 3C and 3D show a case where the coating liquid A is discharged from the bent groove 51 a that continues from the supply port 30 to the nozzle discharge port 61. If the independent circular groove 51b is rotated downward, the coating liquid A filled in the circular groove 51b is discharged from the nozzle discharge port 61 to the outside.

  Next, the nozzle 60 will be described. FIG. 4 is a diagram schematically showing the nozzle 60 extracted with the drum 50. The nozzle 60 contacts the lower part of the coating liquid receiving part 53 of the drum 50 and extends over the entire length in the longitudinal direction. In FIG. 4, the drum 50 is divided into the coating liquid receiving part 53 and the seal part 54. Although not shown separately, a range in which the nozzle discharge ports 61 are provided corresponds to the coating liquid receiving portion 53.

  In the present embodiment, the nozzle 60 may have a nozzle discharge port configured by a linear slit extending in the longitudinal direction, or may have a nozzle discharge port configured by a plurality of through holes. However, from the viewpoint as described below, a nozzle discharge port including a plurality of through holes is preferable. As shown in FIG. 4, the nozzle discharge port 61 is formed by, for example, one long nozzle discharge port 61 composed of a plurality of through holes arranged in a single row in the longitudinal direction or in multiple rows in a staggered manner. Compared to the case where the slit 50 is configured, only the coating liquid A from the groove 51 of the drum 50 is surely discharged, and in order to seal the coating liquid A in the non-groove 52 so as not to be discharged, The distinction between prevention of ejection from the non-groove portion 52 can be reliably controlled, and a fine coating pattern or a small coating pattern can be applied. FIG. 4 shows a state in which the four groove portions 51 are in contact with the nozzle 60 and the two groove portions 51 on the right side in the drawing are carved in close proximity.

  Next, a means for preventing discharge from the non-groove portion 52 will be described. 5A shows a state when the groove 51 of the drum 50 comes to the position of the nozzle discharge port 61, and FIG. 5B shows a state when the non-groove 52 of the drum 50 comes to the position of the nozzle discharge port 61. Are respectively shown from the side cross-section. As shown in FIG. 5A, when the groove 51 comes to the position of the nozzle discharge port 61, the coating liquid A is naturally discharged from the nozzle discharge port 61 to the outside.

  On the other hand, as shown in FIG. 5B, when the non-groove portion 52 comes to the position of the nozzle discharge port 61, discharge from the non-groove portion 52 is prevented as follows. That is, the drum contact surface 62 of the nozzle 60 is formed in a concave curved surface having a curvature smaller than the first drum diameter R2 in a side view, and when the non-groove portion 52 faces downward, the non-groove portion 52 of the drum 50 The nozzle contact portion 62 of the nozzle 60 forms a nozzle seal portion 63 so that the opening 611 of the nozzle discharge port 61 provided on the drum contact surface 62 is sealed by the non-groove portion 52. In this way, discharge to the non-groove portion 52 can be prevented, and the groove portion 51 is also prevented from being caught by the end portion of the drum contact surface 62 and the opening portion 611 of the nozzle discharge port 61. Here, in order to make the sealing more reliable, the contact range between the non-grooved portion 52 of the drum 50 and the drum contact surface 62 of the nozzle 60 is widened by configuring the drum 50 and the nozzle 60 in a relatively pressing direction. A nozzle seal range W having a certain range in the rotation direction with the nozzle discharge port 61 interposed therebetween may be formed.

  In the present embodiment, as described above, an independent coating pattern can be applied in addition to the continuous coating pattern. This is because the groove 51 engraved in the drum 50 is formed as in the prior art. This is because the coating liquid A does not flow from the supply port 30 to the nozzle discharge port 61 but the coating liquid A flows from the nozzle seal portion 63 to the nozzle discharge port 61. Therefore, the groove 51 does not have to be connected from the supply port 30 to the nozzle discharge port 61 via the groove 51, and therefore, an independent coating pattern can be applied by the independent groove 51.

  Further, in order to improve the discharge response from the nozzle discharge port 61 and prevent the flow rate from changing, a gap 42 formed between the drum housing chamber 40 and the drum 50 is provided from the supply port 30 to the nozzle seal portion 63. Through this, the coating liquid A is all connected. Thereby, even a fine coating pattern or a small coating pattern can be applied uniformly regardless of whether it is continuous or independent.

  Next, the operation (application method) of the application apparatus 1 according to the present embodiment will be described with reference to FIGS. 6 and 7 including the relationship between the shape of the groove 51 and the application pattern applied to the object SB.

  The coating method using the coating apparatus 1 includes a step of preparing the coating apparatus 1 in which a drum housing chamber 40 having a coating liquid supply port 30 is formed in the housing 2, and a first drum smaller than the housing diameter R 1 of the drum housing chamber 40. A coating liquid receiving portion 53 having a diameter R2 and including an engraved groove portion 51 and other non-groove portions 52, a second drum diameter R3 substantially the same as the housing diameter R1, and a coating liquid receiving portion 53 A step of supplying the coating liquid to the drum housing chamber 40 in which the drum 50 including the seal portion 54 that seals between the housing 2 and the housing 2 is housed, and below the coating liquid receiving portion 53 of the drum 50 A step of discharging the coating liquid from a nozzle discharge port 61 provided on the drum contact surface 62 of the nozzle 60 that contacts and extends over the entire length in the longitudinal direction. When the coating liquid receiving portion 53 of the drum 50 receives the coating liquid over the entire area and the groove portion 51 of the coating liquid receiving portion 53 of the drum 50 faces downward, the coating liquid received in the groove portion 51 is discharged from the nozzle discharge port 61. It is discharged.

  In the present embodiment, there is an independent groove portion 51 in which the groove portion 51 is not connected to the coating solution supply port 30 and the nozzle discharge port 61, so that the shape of the independent circular groove portion 51b as shown in FIG. In addition to being able to apply the transferred independent application pattern to the object SB, it is also possible to apply an application pattern different from the shape of the independent groove 51 to the object SB by controlling the rotation of the drum 50. It is.

This is because, when the rotation of the drum 50 and the conveyance of the object SB are synchronized, the shape of the independent groove 51 is directly transferred to the object SB, but the rotation of the drum 50 is compared with the conveyance of the object SB. The application pattern different from the shape of the groove 51 can be applied to the object SB by performing control such as speeding up, slowing down, stopping, or rotating in reverse. For example, FIG. 6A shows a case where a circular application pattern is applied to the object SB using the V-shaped groove 51, and FIG. 6B shows a patch-like application pattern applied to the object using the inverted triangular groove 51. Each case is shown for SB.

  For example, in the case as shown in FIG. 6A, when the drum 50 is rotated forward with respect to the object SB, the first half of the V-shaped hatched portion is fast and the latter half is forward rotated slowly, the lower half of the object SB A semicircular coating pattern is applied. When the reverse rotation is performed in the same manner after reaching the tip of the V-shaped shaded portion, an upper half circle is formed, and a circular coating pattern can be applied using the V-shaped groove 51.

  Furthermore, in the case as shown in FIG. 6B, a patch-like coating pattern can be applied using the inverted triangular groove 51 through five stages as shown in FIG. Here, FIG. 7A is a cross-sectional side view at every five stages, FIG. 7B is a front view corresponding to each stage of FIG. 7A, and FIG. 7C shows a state where a coating pattern is applied at each stage. FIG.

  First, in the first stage (the leftmost diagram in the figure), with the drum 50 and the object SB synchronized, the drum 50 is rotated counterclockwise from the vertex of the inverted triangle of the groove 51 to just before the end of the two sides. To rotate forward. Then, a V-shaped application pattern P1 is applied on the object SB.

  Next, in the second stage (second drawing from the left end in the figure), the object SB is conveyed to the right side with the drum 50 stopped. If it does so, the edge part of the application pattern P1 will be extended upwards by the location just before the termination | terminus of 2 sides of an inverted triangle, and the application pattern P2 to which the vertically long straight line was added will be given.

  Next, in the third stage (middle in the figure), the drum 50 is first rotated counterclockwise to the middle of the two sides of the inverted triangle and then counterclockwise until just before the end of the two sides. Rotate. At this time, when the rotation speed of the drum 50 is adjusted, a coating pattern P3 to which a curved line recessed inward is added is applied.

  Next, in the fourth stage (second figure from the right end in the figure), the object SB is transported to the right side with the drum 50 stopped, as in the second stage. The end of the coating pattern P3 extends upward at a location immediately before the end of the side, and the coating pattern P4 to which a vertically long straight line is added is applied.

  Finally, in the fifth stage (the rightmost diagram in the figure), with the drum 50 and the object SB synchronized, the drum 50 is rotated counterclockwise so that the base of the inverted triangle faces the object SB. To rotate forward. Then, a coating pattern P5 to which a horizontally long straight line connecting both ends of the coating pattern P4 is added.

  As described above, according to the present embodiment, a linear or planar shape carved into the coating liquid receiving portion 53 of the drum 50 without replacing the nozzle 60 with a nozzle discharge port 61 of various shapes ( By combining the groove portions 51 such as a circle, a triangle, and a quadrangle, application patterns having various shapes can be applied in a short time. Further, not only a continuous coating pattern but also an independent coating pattern can be applied, as well as a coating pattern can be applied according to the groove 51 engraved in the coating liquid receiving portion 53, and the coating liquid receiving By partially using the groove 51 engraved in the portion 53, a coating pattern different from the groove 51 can be applied.

  Although the embodiments have been described above, the present invention is not limited to the specific embodiments and includes various modifications, which are claimed by those skilled in the art. It is clear from the description of the range.

  As described above, the present invention is a coating apparatus and a coating method that can apply various coating patterns to an object with a coating liquid, and various coating liquids and objects can be employed. For example, as a coating liquid, a sealing agent, an adhesive, a resist, a paint, a coating agent, etc. can be adopted as a target for a fuel cell module, a fuel cell separator, a liquid crystal panel, an organic EL panel, Application of a coating solution required in various industries can be provided.

DESCRIPTION OF SYMBOLS 1 ... Coating apparatus 2 ... Housing 10 ... Buffer chamber 20 ... Flow path 30 ... Supply port 40 ... Drum storage chamber 41 ... Inner wall (of drum storage chamber)
42 ... Gap (between drum housing and drum)
43 ... Connection port 50 ... Drum 51 ... Groove portion 52 ... Non-groove portion 53 ... Application liquid receiving portion 54 ... Sealing portion 60 ... Nozzle 61 ... Nozzle discharge port 611 ... Opening (of nozzle discharge port)
62 ... Drum contact surface 63 ... Nozzle seal part A ... Application liquid SP ... Supply part T ... Tank P ... Pump L ... Liquid feed pipe SB ... Object

Claims (4)

A coating device,
A housing;
A drum housing chamber formed in the housing and having a coating liquid supply port;
A drum housed in the drum housing chamber,
A coating liquid receiving portion having a first drum diameter smaller than the accommodation diameter at both ends of the drum housing chamber, including a carved groove portion and other non-groove portions;
The drum having a second drum diameter substantially the same as the accommodation diameter, and including seal portions at both ends of the coating liquid receiving portion and sealing between the housing;
A nozzle that contacts the lower part of the coating liquid receiving portion of the drum and extends over the entire length in the longitudinal direction thereof, and has a nozzle discharge port.
When the coating liquid receiving part of the drum receives the coating liquid over the entire area and the groove part of the coating liquid receiving part of the drum faces downward, the coating liquid received in the groove part is discharged from the nozzle. A coating apparatus which is discharged from an outlet. The nozzle has a drum contact surface formed in a concave curved surface having a smaller curvature than the first drum diameter in a side view;
When the non-groove portion of the coating liquid receiving portion of the drum is directed downward, an opening of the nozzle discharge port provided on the drum contact surface is provided so that the coating liquid is not discharged from the nozzle discharge port. The coating device according to claim 1, wherein the coating device is sealed by the non-groove portion.   The coating apparatus according to claim 1 or 2, wherein the nozzle discharge port is configured by a plurality of through holes arranged in a row or in a staggered manner in a multi-row in the longitudinal direction of the nozzle. Application method,
Preparing a coating apparatus in which a drum storage chamber having a coating liquid supply port is formed in a housing;
A coating liquid receiving portion having a first drum diameter smaller than the housing diameter at both ends of the drum housing chamber and including a groove portion engraved as a coating pattern and other non-groove portions; and substantially the same as the housing diameter. Supplying the coating liquid to the drum housing chamber containing a drum having a diameter of 2 drums and including a seal portion at both ends of the coating liquid receiving portion and sealing between the housing;
Discharging the coating liquid from a nozzle discharge port provided on a drum contact surface of a nozzle that contacts the lower part of the coating liquid receiving portion of the drum and extends over the entire length in the longitudinal direction thereof, and
In the discharging step, the coating liquid receiving part of the drum receives the coating liquid over the entire area, and the groove part of the coating liquid receiving part of the drum is received in the groove part when facing downward. A coating method, wherein the coating liquid is discharged from the nozzle discharge port.

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