JP2784738B2 - Coating method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method for intermittently forming a long uncoated area in the transverse direction of a coated object on the surface of a continuous coated object. The present invention also relates to a coating apparatus and a coating method and apparatus for intermittently applying a coating liquid only to the surface of a sheet-to-be-coated object that is successively conveyed.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 17, a coating apparatus 1 for intermittently forming an uncoated area for coating is used. The coating roll C, which is driven to rotate, the applicator A for forming a continuous liquid film on the outer peripheral surface of the coating roll C, and the coating roll C intermittently coming into and out of contact with the backing roll B. And an intermittent moving device 2. The applicator A has a liquid dam 3 which forms a coating liquid reservoir U with the coating roll C.
And a metering roll M. The applicator A is joined to the moving frames 4 on both sides that support the coating roll C, and is configured to move together with the coating roll C. The intermittent moving device 2 includes moving operation tools 6, 6 including air cylinders and the like arranged between the moving frames 4, 4 and the fixed frames 5, 5,
The moving frames 4 and 4 are intermittently moved. When the coating roll C approaches the backing roll B between the moving frames 4 and 4 and the fixed frames 5 and 5, a predetermined coating gap is formed between the backing roll B and the coating roll C. Coating gap adjusters 7, 7 for forming are arranged. The predetermined coating gap includes not only a gap formed between the backing roll B and the coating roll C that do not contact but also a pressing dimension when the coating roll C is pressed against the backing roll B. It is a thing.

[0003] A coating method using the coating apparatus 1 is performed as follows. By supplying the coating liquid E to the coating liquid reservoir U, the coating liquid E is adhered on the outer peripheral surface of the rotating coating roll C, and a part of the coating liquid E is rotated by a non-rotating metalling roll M. By scraping, a liquid film F having a predetermined thickness is continuously formed on the outer peripheral surface of the coating roll C. The thickness of the liquid film F is adjusted by adjusting a gap formed between the notched cutting edge Ma of the metalling roll M and the coating roll C.

Next, the intermittent moving device 2 is operated to bring the coating roll C close to the backing roll B, and the coated object such as continuous paper or plastic film backed up by the backing roll B and conveyed. The liquid film F of the coating roll C is transferred to the surface of W, and a coating film H is formed on the surface of the workpiece W. Subsequently, the intermittent moving device 2 is operated to separate the coating roll C from the backing roll B for an appropriate time, so that the transfer of the liquid film F to the surface of the workpiece W is interrupted. On the surface of the object W, an uncoated area V in the shape of a long strip extending in the transverse direction K of the object W is formed. By repeating the operation of the intermittent moving device 2 in this manner, an uncoated region V is formed between the adjacent coating films H, H at an appropriate band width dimension Q and for each peripheral pitch P.

FIG. 18 shows a coating apparatus 9 for intermittently coating a workpiece Wm such as a sheet-like thick film or a glass plate. The coating device 9 operates the intermittent moving device 2 to move the coating roll C close to the belt conveyor J, thereby causing the surfaces of the sheets Wm, Wm... To be conveyed one after another by the conveyor J. Then, the liquid film F of the coating roll C is transferred to form a coating film H on the surface of the workpiece Wm. Adjacent workpieces Wm, Wm
When the coating roll C approaches the space between the two, the intermittent moving device 2 is operated to separate the coating roll C from the belt conveyor J for an appropriate period of time so that the front and rear edges of the surface of each workpiece Wm can be moved. Liquid film F
Interrupt the metastasis.

[0006]

In the conventional coating apparatus 1 and coating method shown in FIG. 17, a coating roll C is separated from a backing roll B to form a coating with a coating film H on a workpiece W. In order to ensure that the roll C is cut off from the liquid film F, it is necessary to consider the viscosity of the coating liquid E, etc.
It is necessary to increase the separation distance for separating the two. For example, when the thickness of the coating film H and the liquid film F is about 500 μm, the separation dimension is 4.0 mm or more. Further, when the band width dimension Q of the uncoated area V is narrow, the backing roll B
It is necessary to make the reciprocation of the separation and approach of the coating roll C with respect to a short time. For example, the conveying speed of the workpiece W is 3.0 m / min, and the band width Q of the uncoated area V is Q.
Is 13.5 mm, it is necessary to reciprocate in 0.27 sec.

However, the coating roll C with respect to the backing roll B can be obtained in a short time while securing a large separation / contact dimension.
When a close contact is made, a large impact is generated. This large impact is transmitted to the metalling roll M to fluctuate the gap between the notched cutting edge Ma of the metalling roll M and the coating roll C, and the liquid film formed on the outer peripheral surface of the coating roll C The thickness of F changes. Furthermore, this large impact is caused by backing roll B
The coating gap formed between the coating roll C and the coating roll C is changed. Therefore, the conventional coating method and apparatus have a drawback that high-precision coating cannot be ensured.

In the conventional coating apparatus 9 and the conventional coating method shown in FIG. 18, a large impact is generated when the coating roll C is separated from and connected to the belt conveyor J in a short time while securing a large separation and contact dimension. However, there was a disadvantage that high-precision coating could not be ensured.

An object of the present invention is to provide a coating method and a coating apparatus capable of eliminating or remarkably reducing impact and performing high-precision intermittent coating in order to solve the above-mentioned problems.

[0010]

According to the gist of the present invention, a liquid film is continuously formed on an outer peripheral surface of a rotating coating roll, and a part of the liquid film is intermittently removed. In this way, a liquid film portion and a strip-shaped liquid film lacking portion that is long in the roll longitudinal direction are alternately formed, and the liquid film of the coating roll is formed on the surface of a continuous workpiece to be backed up and conveyed by the backing roll. The part is transferred to form a coating film, and between the adjacent coating films, a long strip-shaped uncoated area is formed in the transverse direction of the object to be coated, and the surface of the object to be coated is
When the liquid film lacking portion approaches, the object to be coated and the coating
Coating method characterized by separating from wing roll
Is the law .

[0011] summary of the present invention according to claim 2, continuously forming a liquid film on the outer peripheral surface of Cote Ing rotating rolls, a liquid film portion by intermittently removing a portion of the liquid film Each of the objects to be coated is formed by alternately forming a strip-shaped liquid film lacking portion that is long in the roll longitudinal direction and positioning the liquid film lacking portion between adjacent sheet-like workpieces conveyed by the conveyor. The liquid film portion of the coating roll is transferred to the surface of the substrate to form a coating film, and the liquid film lacks between the adjacent sheet-like objects to be coated.
When the parts approach, the object to be coated and the coating
This is a coating method characterized by separating the roll from the roll .

The gist of the present invention according to claim 3 is that a carrier for a workpiece to be coated, a coating roll which is provided on the carrier for a workpiece to be driven, and a continuous roll are provided on the outer peripheral surface of the coating roll. An applicator for forming a liquid film, and a scraper disposed at a position on the entrance side of the coating roll with respect to the carrier for the workpiece to be coated, the scraper being disposed on the outer peripheral surface of the coating roll at appropriate intervals. A coating liquid intermittently formed on the outer peripheral surface of the coating roll in the longitudinal direction of the coating roll by intermittently approaching the coating roll for an appropriate period of time.
The gist of the present invention according to claim 4 is that, between the object to be coated and the coating roll, a separation / contact device that intermittently separates the two is provided, and the separation device is provided on an outer peripheral surface of the coating roll. 4. The coating apparatus according to claim 3 , wherein the two parts are separated from each other only while the area corresponding to the liquid film lacking part approaches the article to be coated.

[0013] summary of the present invention described in claim 5, wherein the scraper, according to claim 3 or the cutting edge is provided with a scraping blade approaching or contacting the intermittently quotes Ing roll
5. The coating apparatus according to item 4 . The gist of the present invention according to claim 6 is the coating apparatus according to claim 3 or 4 , wherein the scraper includes a scraping roll whose rotating outer peripheral surface intermittently approaches or contacts the coating roll.

According to a seventh aspect of the present invention, there is provided a backing roll for rotating the object to be coated.
A coating apparatus according to 3, 4, 5, or 6 . The gist of the present invention according to claim 8 is the coating apparatus according to claim 3, 4, 5, or 6 , wherein the object-to-be-coated is a rotating endless belt.

[0015]

[Action] an alien present invention of claim 1 and claim 2, wherein, on the outer peripheral surface of Cote Ing rotating rolls, since the liquid film portion and the liquid film lacking portion are alternately formed, Hinurikobutsu The liquid film part in contact with the substrate is transferred to the object to be coated to form a coating film, and the part lacking the liquid film in contact with the object to be coated forms an uncoated area in the object to be coated. Therefore, it is not necessary to separate the coating roll from the object when forming the uncoated area on the object. Furthermore, in the present invention, even if a small amount of liquid remains in the liquid film lacking portion on the outer peripheral surface of the coating roll, the coating object and the liquid film lacking portion are completely separated from each other,
It is possible to form an uncoated area where the coating liquid does not adhere to the object to be coated. Since there is no or very little liquid in the liquid film lacking portion on the outer peripheral surface of the coating roll, the separation dimension when separating the coated object and the coating roll can be made extremely small. In addition, the shock generated at the time of separation and contact can be significantly reduced.

According to the third aspect of the present invention, a continuous liquid film is formed on the outer peripheral surface of the rotating coating roll by an applicator. When a part of this liquid film is removed by a scraper, a band-shaped liquid film lacking portion long in the roll longitudinal direction is formed on the outer peripheral surface of the coating roll at an appropriate band width dimension for each circumferential pitch. The part other than the part becomes the liquid film part. When the liquid film portion of the rotating coating roll comes into contact with the object to be conveyed by the object conveying tool, the liquid film portion transfers to the object to be coated and becomes a coating film. When the liquid film lacking portion of the coating roll comes into contact, a band-shaped uncoated area is formed on the object to be coated. Therefore, it is not necessary to separate the coating roll from the object when forming the uncoated area on the object. Shall apply to the fourth aspect of the present invention, even when the liquid traces the liquid film lack portions on the outer peripheral surface of the quotes queuing roll remains completely separated and the coating material and the liquid film lacking portion Therefore, it is possible to form an uncoated area where the coating liquid does not adhere to the object to be coated at all. Since there is no or very little liquid in the liquid film lacking portion on the outer peripheral surface of the coating roll, the separation dimension when separating the coated object and the coating roll can be made extremely small. In addition, the shock generated at the time of separation and contact can be significantly reduced.

According to the fifth aspect of the present invention, a liquid film lacking portion can be formed on the coating roll by intermittently approaching or contacting the cutting edge of the scraping blade with the coating roll. According to the sixth aspect of the present invention, a liquid film lacking portion can be formed on the coating roll by intermittently approaching or contacting the outer peripheral surface of the scraping roll with the coating roll. By increasing the rotation speed of the scraping roll, the scraping ability can be increased.

[0018] an alien present invention as set forth in claim 7, it is possible to form a coating film and the belt-shaped non-coated areas on the surface of the coated product continuously conveyed by punishment king roll. Claim
According to the present invention described in Item 8, a coating film and a strip-shaped uncoated area can be formed on the surface of a single-sheet workpiece to be transported by an endless belt.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A coating method and apparatus according to the present invention will be described below with reference to the embodiments shown in the drawings. (First Embodiment) FIGS. 1 and 2 show a first embodiment of a coating apparatus according to the present invention. FIG. 1 (A) is a plan view of the whole with a part cut away, and FIG. ) Is a left side view, and FIG. 2 is a left side view extracting and showing only a main part.

As shown in FIG. 2, the coating apparatus 11 of this embodiment comprises a backing roll B which is driven to rotate in the direction of arrow D,
A coating roll C attached to the backing roll B and driven to rotate in the direction of arrow D; an applicator A for forming a continuous liquid film on the outer peripheral surface of the coating roll C; And a scraper S arranged on the entry side of C. The backing roll B is composed of a so-called rubber roll in which rubber is coated on the outer periphery of a steel cylindrical portion, and is supported by left and right fixed frames 15, 15 as shown in FIG.
It is driven by a drive motor 18 with a speed reducer.

The coating roll C is a so-called iron roll in which the outer periphery of a steel cylinder is finished by plating or the like.
It is supported by the left and right moving frames 14 and 14 and is driven by a drive motor 19 with a speed reducer. The left and right moving frames 14, 14 are pivotally supported by fixed frames 15, 15, respectively, so that they can swing freely, and are composed of air cylinders and the like in a direction in which the coating roll C approaches and approaches the backing roll B. Swing operation tool 1
It is energized at 6,16.

The fixed frame 15 and the moving frame 14
Between the backing roll B and the coating roll C, an intermittent moving device 12 for intermittently moving the coating roll C toward and away from the backing roll B. And a coating gap adjuster 17 for forming the same. The predetermined coating gap includes not only a gap formed between the backing roll B and the coating roll C that do not contact but also a pressing dimension when the coating roll C is pressed against the backing roll B. It is a thing. Each of the left and right intermittent moving devices 12 includes an eccentric cam 21 supported by a moving frame 14.
And a rotary operation tool 22 such as an air cylinder for rotating the eccentric cam 21. Each of the left and right coating gap adjusters 17 includes a tapered cutter 23 slidably disposed on the fixed frame 15.
Are made to come into contact with each other. Intermittent moving device 1
2 is a non-coating position at which the coating roll C is separated from the backing roll B from a coating position at which the coating roll C approaches or presses the backing roll B when the eccentric cam 21 is rotated by the rotating operation tool 22. Until,
When the coating roll C has a small size (for example, 100 μm
Degree). The coating gap adjuster 17 moves the eccentric cam 21 by moving the taper cutter 23 forward and backward.
Is changed, and the coating gap between the coating roll C and the backing roll B in the coated state approached or pressed against the backing roll B is adjusted.

The applicator A is provided with a liquid dam 3 for forming a coating liquid reservoir U with a coating roll C, and a metering roll M. Applicator A is
Moving frame 1 on both sides supporting coating roll C
4, 14 and is configured to move together with the coating roll C. The metering roll M is fixed so as to form a gap between the notched cutting edge Ma and the outer peripheral surface of the coating roll C.

The scraper S includes a moving frame 14
The blade holder 25 is rotatably supported on the blade, the scraping blade 26 is held by the blade holder 25 and extends in the longitudinal direction of the coating roll C (in the direction of arrow K), and the blade holder 25 is rotated. Left and right rotating operation tools 27, 27 each composed of an air cylinder or the like are provided. The scraping blade 26 includes the left and right rotating operation tool 2.
By the operations of 7, 27, the cutting edge is intermittently separated from the scraping position where the cutting edge approaches or contacts the outer peripheral surface of the coating roll C to the non-scraping position where the cutting edge is separated. Below the scraper S, a tray 28 for receiving the scraping liquid is arranged.

Next, the procedure of an intermittent coating method using the coating apparatus 11 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. Then, the left and right moving frames 14, 14 are moved backward by operating the left and right swing operation tools 16, 16, so that the coating roll C is separated from the backing roll B. Next, as shown in FIG. 2, the coating liquid E is supplied to the coating liquid reservoir U to cause the coating liquid E to adhere to the outer peripheral surface of the rotating coating roll C. Is scraped off by the metalling roll M, whereby a liquid film F having a predetermined thickness is continuously formed on the outer peripheral surface of the coating roll C. The thickness of the liquid film F is adjusted by adjusting a gap formed between the notched cutting edge Ma of the metalling roll M and the outer peripheral surface of the coating roll C.

Subsequently, a part of the liquid film F is removed by the scraping blade 26 which rotates intermittently by the left and right rotating operation tools 27, 27 of the scraper S, and the outer peripheral surface of the coating roll C is removed. A band-shaped liquid film lacking portion R that is long in the roll longitudinal direction is appropriately formed for each circumferential pitch with a band width dimension (measured along the rotation direction of the coating roll C, for example, about 10 to 15 mm). A portion other than R is a liquid film portion L. When the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14 and 14 are advanced by operating the left and right swing operation tools 16 and 16 to bring the coating roll C close to the backing roll B and rotate. Transfer coating is started on the work W to be backed up and conveyed by the driving backing roll B. When the liquid film portion L of the rotating coating roll C comes into contact with the coating film H, the liquid film portion L transfers to the object to be coated to form a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the left and right rotating operation tools 22,
22 is operated, and only when the liquid film lacking portion R approaches the surface of the workpiece W, the workpiece W and the coating roll C
Let away. By this intermittent movement operation, the coating material W and the liquid film lacking portion R of the coating roll C are completely separated from each other, and the uncoated area V where the coating liquid does not adhere to the coating material W at all is removed. Can be formed. Since there is no or very little liquid in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, separation and separation when the coating roll C is separated and separated from the workpiece W by the eccentric cam 21 The dimensions can be made extremely small (for example, when the liquid film portion L of the coating roll C has a film thickness of 500 μm, the separation / contact dimension is about 100 μm), and the shock generated at the time of connection / disconnection is dramatically improved as compared with the conventional case. Can be reduced. As a result, the vibration generated in the coating device 11 becomes very small, and high-precision coating can be performed.

If it is confirmed that a small amount of liquid does not remain in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, it is not always necessary to operate the intermittent moving device 12. At this time, since there is no intermittent movement of the coating roll C by the intermittent moving device 12, there is no impact and high-precision coating can be performed.

This embodiment is a reverse roll coating method in which the coating roll C is rotated in a direction opposite to the rotation direction of the backing roll B.
It is suitable for coating having a coating thickness of 20 μm or more, which is not less than CPS. The coating thickness is adjusted by adjusting the gap between the coating roll C and the metalling roll M during coating and, if necessary, adjusting the speed difference between the coating roll C and the backing roll B. Do.

(Second Embodiment) FIG. 3 shows a second embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The difference between the coating apparatus 31 of the present embodiment and the coating apparatus 11 of the first embodiment (see FIG. 1) is to use a rotating metalling roll M for the applicator A and to rotate for the scraper S. That is, the scraping roll 32 is used. Other configurations are substantially the same as those of the first embodiment, and the same reference numerals in the drawings denote the same components. In FIG. 3, the illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one by one on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

The scraper S of this embodiment is arranged so that the scraping roll 32 can move forward and backward such that the scraping roll 32 is moved toward and away from the coating roll C, and rotates on the outer circumferential surface of the coating roll C. The coating roll C by intermittently approaching or abutting
Liquid film lacking portion R can be formed on the substrate. The scraper S can increase the scraping ability by increasing the rotation speed of the scraping roll 32. The metering roll M and the scraping roll 32 are provided with cleaning doctors 33 and 34.

The procedure of the intermittent coating method using the coating apparatus 31 of this embodiment is substantially the same as that of the first embodiment, and therefore the description is omitted.

(Third Embodiment) FIG. 4 shows a third embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The difference between the coating device 36 of the present embodiment and the coating device 11 of the first embodiment (see FIG. 1) is that a die device 37 is used for the applicator A. Other configurations are substantially the same as those of the first embodiment, and the same reference numerals in the drawings denote the same components. In FIG. 4, the illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one by one on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

The die device 37 has a manifold 38a formed inside a die head 38, and is set up so that a discharge slit 38b communicating with the manifold 38a faces the entire outer circumferential surface of the coating roll C in the longitudinal direction. The die device 37 distributes the coating liquid supplied to the manifold 38a from the coating liquid supply pump (not shown) evenly to the entire area of the discharge slit 38b by the manifold 38a, and coats the coating roll from the entire area of the discharge slit outlet 38C. Discharge to the outer peripheral surface of C. A discharge slit outlet 38c is provided on the outer peripheral surface of the rotating coating roll C.
A continuous liquid film F having a uniform film thickness is formed with the coating liquid uniformly discharged from the entire area of the liquid crystal. The length of the discharge slit 38c in the advancing direction of the object to be coated depends on the viscosity of the coating liquid, but is preferably 0.1 to 10 mm in order to obtain a uniform discharge distribution.

Next, the procedure of an intermittent coating method using the coating device 36 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. Then, the left and right moving frames 14, 14 are moved backward by operating the left and right swing operation tools 16, 16, so that the coating roll C is separated from the backing roll B. Next, a liquid film F having a uniform film thickness is formed on the outer peripheral surface of the rotating coating roll C with the coating liquid discharged from the entire area of the discharge slit outlet 38c of the die device 37.

Subsequently, a part of the liquid film F is removed by the scraping blade 26 which rotates intermittently with the scraper S, and a strip-shaped liquid film long in the longitudinal direction of the coating roll C is formed on the outer peripheral surface of the coating roll C. The portion R is appropriately formed with a band width dimension (dimension along the rotation direction of the coating roll C) for each circumferential pitch, and a portion other than the liquid film lacking portion R is defined as a liquid film portion L.
If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14,
Then, the coating roll C is moved closer to the backing roll B, and the transfer coating is started on the workpiece W to be backed up and conveyed by the backing roll B which is driven to rotate. When the liquid film portion L of the rotating coating roll C comes into contact with the coating film H, the liquid film portion L transfers to the object to be coated to form a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated to separate the workpiece W and the coating roll C only when the liquid film lacking portion R approaches the surface of the workpiece W.

In this embodiment, the scraper S
Of course, the scraping blade 26 can be changed to a scraping roll 32 shown in FIG.

(Fourth Embodiment) FIG. 5 shows a fourth embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The difference between the coating apparatus 41 of this embodiment and the coating apparatus 11 of the first embodiment (see FIG. 1) is that a die coater 42 is used for the applicator A. Other configurations are substantially the same as those of the first embodiment, and the same reference numerals in the drawings denote the same components. In FIG. 5, the illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one by one on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

In the die coater 42, a manifold (not shown) is formed inside a head 43 disposed below the coating roll C, and a discharge slit 43c communicating with the manifold is formed on the outer peripheral surface of the coating roll C. It is opened so as to face the whole area in the longitudinal direction. In the die coater 42, the exit side of the coating roll of the discharge slit 43 c is formed by a doctor edge 44. The doctor edge 44 is attached so as to form a coating gap between the cutting edge 44a and the outer peripheral surface of the coating roll C.

The die coater 42 discharges a coating liquid supplied from a coating liquid supply pump (not shown) to a manifold (not shown) by a discharge slit 43c using a manifold.
Coating roll C that is evenly distributed over the entire area and rotates
After the coating liquid is attached to the outer peripheral surface of the substrate, it is scraped off with a doctor edge 44 to form a liquid film F having a uniform film thickness. In addition, the length of the discharge slit 43c in the advancing direction of the object to be coated depends on the viscosity of the coating liquid.
mm.

Next, the procedure of an intermittent coating method using the coating device 36 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. Then, the left and right moving frames 14, 14 are moved backward by operating the left and right swing operation tools 16, 16, so that the coating roll C is separated from the backing roll B. Next, the liquid film F having a uniform film thickness is formed on the outer peripheral surface of the rotating coating roll C by the die coater 42.

Subsequently, a part of the liquid film F is removed by the intermittently rotating scraping blade 26 of the scraper S, and a strip-shaped liquid film long in the longitudinal direction of the coating roll C is formed on the outer peripheral surface of the coating roll C. The portion R is appropriately formed with a band width dimension (dimension along the rotation direction of the coating roll C) for each circumferential pitch, and a portion other than the liquid film lacking portion R is defined as a liquid film portion L.
If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14,
Then, the coating roll C is moved closer to the backing roll B, and the transfer coating is started on the workpiece W to be backed up and conveyed by the backing roll B which is driven to rotate. When the liquid film portion L of the rotating coating roll C comes into contact with the coating film H, the liquid film portion L transfers to the object to be coated to form a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated to separate the workpiece W and the coating roll C only when the liquid film lacking portion R approaches the surface of the workpiece W.

In this embodiment, the scraper S
Of course, it is possible to change the scraping blade 26 of FIG.

(Fifth Embodiment) FIG. 6 shows a fifth embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The difference between the coating apparatus 46 of this embodiment and the coating apparatus 11 of the first embodiment (see FIG. 1) is that a transfer roll T and a nip roll N are used for the applicator A. Other configurations are substantially the same as those of the first embodiment, and the same reference numerals in the drawings denote the same components. In FIG. 6, illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one by one on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

In the applicator A, the transfer roll T is a so-called rubber roll formed by coating the outer periphery of a steel cylinder with rubber, and the nip roll N finishes the outer periphery of the steel cylinder by plating. It is formed of a so-called iron roll. The applicator A presses the outer peripheral surface of the transfer roll T with an appropriate pressure against the outer peripheral surface of the coating roll C, and presses the outer peripheral surface of the nip roll N with the appropriate pressure against the outer peripheral surface of the transfer roll T.
In the applicator A, a coating liquid reservoir U is formed between a transfer roll T and a nip roll N, and the liquid film F-appears on the outer peripheral surface of the transfer roll T with the rotation of both rolls.
Form one. The liquid film F-1 formed on the outer peripheral surface of the transfer roll T is transferred to the outer peripheral surface of the coating roll C and becomes a liquid film F-2 having a uniform film thickness. The thickness of the transferred liquid film F-2 can be made smaller than the liquid film F-1 because the transfer roll T is pressed against the coating roll C with appropriate pressure.

Next, the procedure of an intermittent coating method using the coating apparatus 46 of this embodiment will be described. First, the object to be coated W is prepared by passing the object to be coated such that the object to be coated W is backed up by the backing roll B and transported. The left and right moving frames 1 are operated by the left and right swing operation tools 16, 16.
4, 14 are retracted, and the coating roll C is separated from the backing roll B. Next, a liquid film F-2 transferred from the applicator A is formed on the outer peripheral surface of the rotating coating roll C.

Subsequently, a part of the liquid film F-2 is removed by the scraping blade 26 which rotates intermittently with the scraper S.
On the outer peripheral surface of the coating roll C, a band-shaped liquid film lacking portion R that is long in the roll longitudinal direction is formed at appropriate band width dimensions (dimensions along the rotation direction of the coating roll C) for each circumferential pitch. A portion other than the lacking portion R is defined as a liquid film portion L. If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 1 are operated by operating the left and right swing operation tools 16 and 16.
The coating roll C is made to approach the backing roll B by moving the coating rolls 4 and 14 forward, and the transfer coating is started on the workpiece W to be backed up and conveyed by the backing roll B which is driven to rotate. When the liquid film portion L of the rotating coating roll C comes into contact with the coating film H, the liquid film portion L transfers to the object to be coated to form a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 not shown (see FIG. 1)
Is operated to separate the workpiece W and the coating roll C only when the liquid film lacking portion R approaches the surface of the workpiece W.

In this embodiment, since the applicator A forms the liquid film F-2 on the coating roll C using the transfer roll T and the nip roll N, the coating film H
Can be made thinner than in the first embodiment. In the present embodiment, it is of course possible to change the scraper S from the scraping blade 26 to the scraping roll 32 shown in FIG. Further, in the present embodiment, by using two or more trans rolls T for the applicator A and performing the transfer of the liquid film F-1 a plurality of times,
Liquid film F-2 formed on outer peripheral surface of coating roll C
It is also possible to further reduce the film thickness.

(Sixth Embodiment) FIG. 7 shows a sixth embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The coating apparatus 51 of this embodiment is an inverse roll coating method, and includes a backing roll B that is driven to rotate in the direction of arrow D, and an arrow I attached to the backing roll B.
Roll C driven to rotate in the direction, an applicator A for forming a continuous liquid film on the outer peripheral surface of the coating roll C, and a scraper disposed on the entrance side of the coating roll C with respect to the backing roll B S is provided. The backing roll B is a so-called rubber roll in which rubber is coated on the outer periphery of a steel tubular portion, is supported by left and right fixed frames 15, 15, and is driven by a drive motor with a speed reducer (not shown). Is done.

The coating roll C is a so-called iron roll in which the outer periphery of a steel tube is finished by plating or the like.
It is supported by the left and right moving frames 14 and 14 and is driven at the same peripheral speed as the backing roll B. The left and right moving frames 14, 14 are fixed frames 15, 1
Each of the shafts 5 is pivotally supported 20 so that it can swing freely.
The right and left swinging operation tools 16 and 16 composed of air cylinders and the like are urged in a direction in which the coating roll C is brought close to the backing roll B once.

The fixed frame 15 and the moving frame 14
Although not shown, a pair of intermittent moving devices 12 and coating gap adjusters 17 (see FIG. 1) are arranged near both left and right sides between them.

The applicator A includes liquid dams 3 and 3, which form a coating liquid reservoir U with a coating roll C,
And a metering roll M. Applicator A
Are joined to the moving frames 14 on both sides that support the coating roll C, and are configured to move together with the coating roll C. Metering Roll M
Indicates the cutting edge Ma formed with the notch and the coating roll C
Is fixed so as to form a gap between the outer peripheral surface of the first member and the second member.

The scraper S is mounted on the moving frame 14
A blade holder 25 rotatably supported by the blade, a scraping blade 26 held by the blade holder 25 and extending in the longitudinal direction of the coating roll C, and an air cylinder for rotating the blade holder 25. And an operation tool (not shown). By the operation of the rotating operation tool, the scraping blade 26 intermittently comes into contact with and separates from the scraping position where the cutting edge of the blade comes into contact with the outer peripheral surface of the coating roll C to the non-scraping position where it separates. I'm Below the scraper S, a tray 28 for receiving the scraping liquid is arranged.

Next, the procedure of an intermittent coating method using the coating apparatus 51 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. Then, the left and right moving frames 14, 14 are moved backward by operating the left and right swing operation tools 16, 16, so that the coating roll C is separated from the backing roll B. Next, by supplying the coating liquid E to the coating liquid reservoir U, the coating liquid E is adhered onto the outer peripheral surface of the rotating coating roll C.
Is scraped off by a metalling roll M to form a liquid film F having a predetermined thickness on the outer peripheral surface of the coating roll C in a continuous manner. The thickness of the liquid film F is adjusted by adjusting a gap formed between the notched cutting edge Ma of the metalling roll M and the outer peripheral surface of the coating roll C.

Subsequently, a part of the liquid film F is removed by the scraper S which rotates intermittently, and a strip-like liquid film long in the longitudinal direction of the coating roll C is formed on the outer peripheral surface of the coating roll C. The portion R is appropriately formed with a band width dimension (a dimension viewed along the rotation direction of the coating roll C, for example, 10 to 15
(approximately mm) for each peripheral pitch, and a portion other than the liquid film lacking portion R is defined as a liquid film portion L. When the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14 and 14 are advanced by operating the left and right swing operation tools 16 and 16 to bring the coating roll C close to the backing roll B and rotate. Transfer coating is started on the workpiece W to be backed up and conveyed by the driving backing roll B. When the liquid film portion L of the rotating coating roll C approaches, the liquid film portion L transfers to the object to be coated and becomes a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Approaching, an uncoated uncoated area V is formed on the workpiece W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
By operating the rotary operation tools 22, 22, the workpiece W and the coating roll C are separated from each other only when the liquid film lacking portion R approaches the surface of the workpiece W. By this intermittent moving operation, the object W to be coated and the liquid film lacking portion R are completely separated from each other to form an uncoated region V where the coating liquid is not attached to the object W at all. it can.

If it is confirmed that a small amount of liquid does not remain in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) is necessarily used.
(See FIG. 1). At this time, since there is no intermittent movement of the coating roll C by the intermittent moving device 12, no impact is generated and high-precision coating can be performed.

(Seventh Embodiment) FIG. 8 shows a seventh embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The difference between the coating device 56 of the present embodiment and the coating device 51 of the sixth embodiment (see FIG. 7) is that a rotating metalling roll M is used for the applicator A and a scraper S is used for rotation. That is, the scraping roll 32 is used. The other configuration is substantially the same as that of the sixth embodiment, and the same reference numerals in the drawings denote the same components. In FIG. 8, illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one by one on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

The scraper S according to the present embodiment is arranged so that the scraping roll 32 can move forward and backward so as to be in contact with and separate from the coating roll C, and rotate on the outer circumferential surface of the coating roll C. The coating roll C by intermittently approaching or abutting
Liquid film lacking portion R can be formed on the substrate. The scraper S can increase the scraping ability by increasing the rotation speed of the scraping roll 32. The metering roll M and the scraping roll 32 are provided with cleaning doctors 33 and 34.

The procedure of the intermittent coating method using the coating apparatus 56 of this embodiment is substantially the same as that of the sixth embodiment, and therefore the description is omitted.

(Eighth Embodiment) FIG. 9 shows an eighth embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The difference between the coating apparatus 61 of this embodiment and the coating apparatus 51 of the sixth embodiment (see FIG. 7) is that a die device 37 is used for the applicator A. The other configuration is substantially the same as that of the sixth embodiment, and the same reference numerals in the drawings denote the same components. In FIG. 9, illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged in pairs on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

The die device 37 has a manifold 38a formed inside a die head 38, and is set up so that a discharge slit 38b communicating with the manifold 38a faces the entire length of the outer peripheral surface of the coating roll C in the longitudinal direction. The die device 37 distributes the coating liquid supplied to the manifold 38a from the coating liquid supply pump (not shown) evenly to the entire area of the discharge slit 38b by the manifold 38a, and coats the coating roll from the entire area of the discharge slit outlet 38c. Discharge to the outer peripheral surface of C. A discharge slit outlet 38c is provided on the outer peripheral surface of the rotating coating roll C.
The liquid film F having a uniform film thickness is formed by the coating liquid discharged from the entire region of the above.

Next, the procedure of an intermittent coating method using the coating apparatus 61 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. Then, the left and right moving frames 14 are moved backward by operating the left and right rocking operation tools 16, and the coating roll C is changed to the backing roll B.
Keep away from Next, the discharge slit outlet 38 of the die device 37 is attached to the outer peripheral surface of the rotating coating roll C.
A liquid film F having a uniform film thickness is formed with the coating liquid discharged from the entire region of c.

Subsequently, a part of the liquid film F is removed by the scraper S which rotates intermittently, and a strip-shaped liquid film long in the longitudinal direction of the coating roll C is formed on the outer peripheral surface of the coating roll C. The portion R is appropriately formed with a band width dimension (dimension along the rotation direction of the coating roll C) for each circumferential pitch, and a portion other than the liquid film lacking portion R is defined as a liquid film portion L.
If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14,
Then, the coating roll C is moved closer to the backing roll B, and the transfer coating is started on the workpiece W to be backed up and conveyed by the backing roll B which is driven to rotate. When the liquid film portion L of the rotating coating roll C comes into contact with the coating film H, the liquid film portion L transfers to the object to be coated to form a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated to separate the workpiece W and the coating roll C only when the liquid film lacking portion R approaches the surface of the workpiece W.

In this embodiment, the scraper S
Of course, the scraping blade 26 can be changed to a scraping roll 32 shown in FIG.

(Ninth Embodiment) FIG. 10 shows a fourth embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

The coating apparatus 66 of this embodiment differs from the coating apparatus 51 of the sixth embodiment (see FIG. 7) in that the die coater 42 is used for the applicator A. The other configuration is substantially the same as that of the sixth embodiment, and the same reference numerals in the drawings denote the same components. In addition, FIG.
The illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1), which are arranged in pairs on the left and right, is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

In the die coater 42, a manifold (not shown) is formed inside a head 43 arranged below the coating roll C, and a discharge slit 43c communicating through the manifold is formed by the coating slit C. It is opened so as to face the entire longitudinal direction of the outer peripheral surface. The die coater 42 has a discharge slit 43c.
Is formed by a doctor edge 44. The doctor edge 44 is attached so as to form a coating gap between the cutting edge 44a and the outer peripheral surface of the coating roll C.

The die coater 42 rotates by uniformly distributing the coating liquid supplied from the coating liquid supply pump (not shown) to the manifold (not shown) to the entire area of the discharge slit 43c by the manifold. Coating roll C
After the coating liquid is applied to the outer peripheral surface of the above, a liquid film F having a uniform film thickness is formed by the doctor edge 44.

Next, the procedure of an intermittent coating method using the coating device 66 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. Then, the left and right moving frames 14, 14 are moved backward by operating the left and right swing operation tools 16, 16, so that the coating roll C is separated from the backing roll B. Next, the liquid film F having a uniform film thickness is formed on the outer peripheral surface of the rotating coating roll C by the die coater 42.

Subsequently, a part of the liquid film F is removed by the scraper S which rotates intermittently, and a strip-like liquid film long in the longitudinal direction of the coating roll C is formed on the outer peripheral surface of the coating roll C. The portion R is appropriately formed with a band width dimension (dimension along the rotation direction of the coating roll C) for each circumferential pitch, and a portion other than the liquid film lacking portion R is defined as a liquid film portion L.
If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14,
Then, the coating roll C is moved closer to the backing roll B, and the transfer coating is started on the workpiece W to be backed up and conveyed by the backing roll B which is driven to rotate. When the liquid film portion L of the rotating coating roll C approaches, the liquid film portion L transfers to the object to be coated and becomes a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated to separate the workpiece W and the coating roll C only when the liquid film lacking portion R approaches the surface of the workpiece W.

In this embodiment, the scraper S
Of course, the scraping blade 26 can be changed to a scraping roll 32 shown in FIG.

(Tenth Embodiment) FIG. 11 shows a first embodiment of the present invention.
It is a left side view which shows Example 0 and cuts out a fixed frame and a moving frame.

The difference between the coating apparatus 71 of this embodiment and the coating apparatus 51 of the sixth embodiment (see FIG. 7) is that the transfer roll T-1, the transfer roll T-2, the nip roll N, and the scraping roll 32 was used for the scraper S. The other configuration is substantially the same as that of the sixth embodiment, and the same reference numerals in the drawings denote the same components. FIG.
In FIG. 1, the illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one pair on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

In the applicator A, the transfer roll T-2 and the coating roll C are so-called rubber rolls formed by coating the outer circumference of a steel cylinder with rubber, and the transfer roll T-1, the nip roll N and the backing roll are formed. The roll B is formed of a so-called iron roll in which the outer periphery of a steel cylinder is finished by plating or the like. The applicator A presses the outer circumferential surface of the transfer roll T-1 against the outer circumferential surface of the coating roll C with appropriate pressure, and applies the transfer roll T to the outer circumferential surface of the transfer roll T-1.
-2 is pressed with an appropriate pressure, and the outer surface of the nip roll N is pressed with an appropriate pressure on the outer circumferential surface of the transfer roll T-2.

In the applicator A, a coating liquid reservoir U is formed between the transfer roll T-2 and the nip roll N, and as the two rolls rotate, the transfer roll T-
Then, a liquid film F-1 is formed on the outer peripheral surface of No. 2. The liquid film F-1 formed on the outer peripheral surface of the transfer roll T-2 is transferred to the outer peripheral surfaces of the transfer roll T-1 and the coating roll C to form a liquid film F-3 having a uniform film thickness. The film thickness of the transferred liquid film F-3 is the transfer roll T-
Since the film is transferred to the coating roll C via 1, it can be thinner than the film thickness of the liquid film F- 1.

Next, the procedure of an intermittent coating method using the coating apparatus 71 of this embodiment will be described. First, the object to be coated W is prepared by passing through the object to be coated so that the object to be coated W is backed up by the backing roll B and transported. The left and right moving frames 14 are retracted by operating the left and right swing operation tools 16, 16, and the coating roll C is separated from the backing roll B. Next, a liquid film F-3 transferred from the applicator A is formed on the outer peripheral surface of the rotating coating roll C.

Subsequently, a part of the liquid film F-3 is removed by the scraping roll 32 of the scraper S, which intermittently approaches the coating roll C, and is placed on the outer peripheral surface of the coating roll C in the roll longitudinal direction. Long strip-shaped liquid film lacking part R
Is appropriately formed for each circumferential pitch with a band width dimension (dimension along the rotation direction of the coating roll C), and a portion other than the liquid film lacking portion R is defined as a liquid film portion L. When the formation of the liquid film lacking portion R is confirmed, the moving frames 14, 14 are moved forward by operating the left and right swing operation tools 16, 16, and the coating roll C is brought closer to the backing roll B and driven to rotate. Transfer coating is started on the object W to be backed up and conveyed by the backing roll B. When the liquid film portion L of the rotating coating roll C comes into contact with the coating film H, the liquid film portion L transfers to the object to be coated to form a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Contact, a band-shaped uncoated area V is formed on the article to be coated W.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated to separate the workpiece W and the coating roll C only when the liquid film lacking portion R approaches the surface of the workpiece W.

In this embodiment, the scraper S
It is of course possible to change the scraping roll 32 of FIG. 9 to the scraping blade 26 shown in FIG.

This embodiment is an inverse roll coating system in which the coating roll C is rotated in the same direction as the rotation of the backing roll B.
000 CPS or less, and the coating thickness of the coating film H is 0.3 μm
Suitable for the above thin coating.

(Eleventh Embodiment) FIG. 12 shows an eleventh embodiment of the present invention.
It is a left view which shows an Example and a fixed frame and a moving frame are notched and shown.

The coating apparatus 76 of this embodiment is a reverse roll coating method for a single-wafer workpiece Wm.
Endless belt conveyor J driven to rotate in the direction
A coating roll C attached to the belt conveyor J and driven to rotate in the direction of arrow D; an applicator A for forming a continuous liquid film on the outer peripheral surface of the coating roll C; And a scraper S arranged on the entry side of the roll C. The belt conveyor J is composed of a drum 7
7, 77, a permeable endless belt 78 stretched around the front and rear drums 77, 77, and a suction box 79 and a guide roll 80 arranged on the back side of the endless belt 78. The endless belt 78 is driven by a drive motor with a reducer (not shown) that is joined.

The suction box 79 prevents the slip between the endless belt 78 and the workpiece Wm by adsorbing the sheet-like workpiece Wm on the air-permeable endless belt 78. The workpiece Wm is conveyed by an endless belt 78. In the belt conveyor J, the conveying surface of the endless belt 78 may be provided with an adhesive property so that the workpiece Wm is adhered to the endless belt 78 and conveyed so as not to be displaced. The guide roll 80 is provided with the conveyed workpiece Wm.
And is fixed to the fixed frame 15 so as to face the coating roll C so that the gap between the surface of the coating roll C and the outer peripheral surface of the coating roll C is constant. The guide roll 80 is forcibly driven in synchronization with the endless belt 78 as needed.

The coating roll C is a so-called iron roll in which the outer periphery of a steel cylinder is finished by plating or the like.
It is supported by the left and right moving frames 14 and 14 and is forcibly driven. Left and right moving frames 14, 1
Reference numeral 4 denotes a left and right swing operation tool 16 comprising an air cylinder or the like in a direction of allowing the coating roll C to approach the belt conveyor J while being pivotally supported by the fixed frames 15 and 15 respectively. , 16.

The fixed frame 15 and the movable frame 14
Although not shown, a pair of intermittent moving devices 12 and coating gap adjusters 17 (see FIG. 1) are arranged near both left and right sides between them.

The applicator A is provided with a liquid dam 3 for forming a coating liquid reservoir U with the coating roll C, and a non-rotating metering roll M. The applicator A is joined to the moving frames 14 on both sides that support the coating roll C, and the coating roll C
It is configured to move with. The metering roll M is fixed so as to form a gap between the notched cutting edge Ma and the outer peripheral surface of the coating roll C.

[0100] The scraper S is
A blade holder 25 rotatably supported by the blade, a scraping blade 26 held by the blade holder 25 and extending in the longitudinal direction of the coating roll C, and an air cylinder for rotating the blade holder 25. And an operation tool (not shown). By the operation of the rotating operation tool, the scraping blade 26 intermittently comes into contact with and separates from the scraping position where the cutting edge of the blade comes into contact with the outer peripheral surface of the coating roll C to the non-scraping position where it separates. I'm Below the scraper S, a tray 28 for receiving the scraping liquid is arranged.

Next, the procedure of an intermittent coating method using the coating apparatus 76 of this embodiment will be described. First, preparation is made so that the article to be coated Wm is conveyed by the belt conveyor J at predetermined intervals. Then, the left and right moving frames 14, 14 are operated by operating the left and right swing operation tools 16, 16.
And roll the coating roll C on the belt conveyor J
Keep away from Next, the coating liquid E is supplied to the coating liquid reservoir U so that the coating liquid E adheres to the outer peripheral surface of the rotating coating roll C, and a part of the coating liquid E is Thus, a liquid film F having a predetermined thickness is continuously formed on the outer peripheral surface of the coating roll C. The thickness of the liquid film F is adjusted by adjusting a gap formed between the notched cutting edge Ma of the metalling roll M and the outer peripheral surface of the coating roll C.

Subsequently, by intermittently rotating the scraping blade 26 of the scraper S in synchronization with the transport of the workpiece Wm, a part of the liquid film F is removed, and the outer peripheral surface of the coating roll C is removed. On the top, a band-shaped liquid film lacking portion R that is long in the roll longitudinal direction is formed with a predetermined band width dimension (coating roll C).
The liquid film portion L is formed at predetermined pitches in the circumferential direction (dimensions along the rotation direction of FIG. 3), and portions other than the liquid film lacking portion R are formed. If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14, 1 are operated by operating the left and right swing operation tools 16, 16.
4 is advanced to bring the coating roll C close to the belt conveyor J, and transfer coating is started on the workpiece Wm conveyed by the belt conveyor J. When the liquid film portion L of the rotating coating roll C approaches, the liquid film portion L transfers to the object to be coated and becomes a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. When approaching,
A band-shaped uncoated area V is formed on the workpiece Wm.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated only when the liquid film lacking portion R approaches the surface of the workpiece Wm.
And the coating roll C are separated. By this intermittent moving operation, the object Wm to be coated and the liquid film lacking portion R are completely separated from each other to form an uncoated region V where the coating liquid is not attached to the object Wm at all. it can.

When it is confirmed that a small amount of liquid does not remain in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) is necessarily used.
(See FIG. 1). At this time, since there is no intermittent movement of the coating roll C by the intermittent moving device 12, no impact is generated and high-precision coating can be performed.

In the coating apparatus 76 of this embodiment, the operation timing of the scraper S is changed to adjust the width and the pitch of the liquid film lacking portion R formed on the outer peripheral surface of the coating roll C. Thus, the first to third coating patterns shown in FIG. 13 can be obtained. The plan view of (A-1) and the side view of (A-2) show a first coating pattern in which a coating film H is formed on the entire surface of the workpiece Wm. In this coating pattern, a liquid film lacking portion R (see FIG. 12) formed on the outer peripheral surface of the coating roll C is joined to front and rear end surfaces of the workpiece Wm. The coating liquid is prevented from adhering to the side. Fig. (B-1)
The plan view and the side view of (B-2) show a second coating pattern in which an uncoated area V is formed on the periphery of the surface of the workpiece Wm. The plan view of FIG. (C-1) and the side view of (C-2) show the coating films H, H divided into a plurality on the surface of the workpiece Wm.
9 shows a third coating pattern in which is formed.

The coating apparatus 76 of the present embodiment can also adopt the inverse roll coating method by transporting the workpiece Wm in the direction opposite to the arrow X direction.

(Twelfth Embodiment) FIG. 14 shows a first embodiment of the present invention.
FIG. 13 is a left side view showing the second embodiment, in which a fixed frame and a movable frame are cut away.

The difference between the coating apparatus 81 of this embodiment and the coating apparatus 76 of the eleventh embodiment (see FIG. 12) is that the transfer roll T and the nip roll N
And a scraper S that uses a rotating scraping roll 32. The other configuration is substantially the same as that of the twelfth embodiment, and the same reference numerals in the drawings denote the same components. FIG. 14 shows the intermittent moving device 12 and the coating gap adjuster 17 arranged one by one on the left and right.
(See FIG. 1) is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

The applicator A has a so-called rubber roll in which the transfer roll T is formed by coating the outer periphery of a steel cylinder with rubber, and the nip roll N finishes the outer periphery of the steel cylinder by plating. It is formed of iron rolls. Incidentally, a configuration is also possible in which the nip roll N and the coating roll C are rubber rolls, and the transfer roll T is an iron roll. The applicator A presses the outer peripheral surface of the transfer roll T with an appropriate pressure against the outer peripheral surface of the coating roll C, and presses the outer peripheral surface of the nip roll N with the appropriate pressure against the outer peripheral surface of the transfer roll T. The applicator A has a coating liquid reservoir U between a transfer roll T and a nip roll N.
Is formed, and a liquid film F-1 is formed on the outer peripheral surface of the transfer roll T with the rotation of both rolls. The liquid film F-1 formed on the outer peripheral surface of the transfer roll T is transferred to the outer peripheral surface of the coating roll C, and the liquid film F having a uniform film thickness is formed.
-2. The thickness of the transferred liquid film F-2 can be made smaller than the liquid film F-1 because the transfer roll T is pressed against the coating roll C with appropriate pressure.

The scraper S of this embodiment is arranged so that the scraping roll 32 can advance and retreat so as to come into contact with and separate from the coating roll C. The scraper S rotates with respect to the outer peripheral surface of the coating roll C. The coating roll C by intermittently approaching or abutting
Liquid film lacking portion R can be formed on the substrate. The scraper S can increase the scraping ability by increasing the rotation speed of the scraping roll 32. The scraping roll 32 is provided with a cleaning doctor 34.

Next, the procedure of an intermittent coating method using the coating apparatus 81 of this embodiment will be described. First, preparation is made so that the article to be coated Wm is conveyed on the belt conveyor J at a predetermined interval. Then, the left and right swing operation tools 16, 16
The left and right moving frames 14, 14 are retracted by the operation described above, and the coating roll C is separated from the belt conveyor J. Next, the liquid film F-transferred from the applicator A onto the outer peripheral surface of the rotating coating roll C is next.
Form 2

Subsequently, the outer peripheral surface of the scraping roll 32 of the scraper S is intermittently approached or brought into contact with the outer peripheral surface of the coating roll C in synchronization with the transport of the article to be coated Wm. 2 is partially removed to form a coating roll C
A belt-shaped liquid film lacking portion R long in the roll longitudinal direction is formed at a predetermined band width dimension (dimension along the rotating direction of the coating roll C) on the outer peripheral surface of each of the predetermined circumferential pitches. A portion other than the portion R is a liquid film portion L. Liquid film lacking part R
Is confirmed, the left and right swing operation tools 16, 1
By moving the left and right moving frames 14 and 14 by the operation of 6, the coating roll C is made to approach the belt conveyor J, and transfer coating is started on the workpiece Wm conveyed by the belt conveyor J. When the liquid film portion L of the rotating coating roll C approaches, the liquid film portion L transfers to the object to be coated and becomes a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Is approaching, the workpiece W
A band-shaped uncoated area V is formed on m.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated only when the liquid film lacking portion R approaches the surface of the workpiece Wm.
And the coating roll C are separated. By this intermittent moving operation, the object Wm to be coated and the liquid film lacking portion R are completely separated from each other to form an uncoated region V where the coating liquid is not attached to the object Wm at all. it can. As the coating pattern, various patterns shown in FIG. 13 are possible.

If it is confirmed that a small amount of liquid does not remain in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) is necessarily used.
(See FIG. 1). At this time, since there is no intermittent movement of the coating roll C by the intermittent moving device 12, no impact is generated and high-precision coating can be performed.

In this embodiment, since the liquid film F-2 is formed on the coating roll C using the applicator A, the transfer roll T and the nip roll N, the coating thickness of the coating film H is adjusted to the value of the eleventh embodiment. It can be made thinner than the example (see FIG. 12). In this embodiment, it is of course possible to change the scraper S from the scraping roll 32 to the scraping blade 26 shown in FIG. Further, in the present embodiment, the liquid film F- formed on the outer peripheral surface of the coating roll C is obtained by performing the transfer of the liquid film F-1 a plurality of times using two or more trans rolls T for the applicator A. It is also possible to further reduce the film thickness of No. 2.

The coating apparatus 81 of the present embodiment can of course adopt an inverse roll coating system by transporting the workpiece Wm in the direction opposite to the arrow X direction.

(Thirteenth Embodiment) FIG. 15 shows a thirteenth embodiment of the present invention.
It is a left side view which cuts out a fixed frame and a moving frame and which shows 3 Example.

The difference between the coating device 86 of this embodiment and the coating device 76 of the eleventh embodiment (see FIG. 12) is that the die device 37 is used for the applicator A. The other configuration is substantially the same as the eleventh embodiment,
The same reference numerals in the drawings denote the same components. Note that FIG.
The illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1), which are arranged in pairs on the left and right, is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

The die device 37 has a manifold 38a formed inside the die head 38, and is set up so that the discharge slit 38b communicating with the manifold 38a faces the entire length of the outer peripheral surface of the coating roll C in the longitudinal direction. The die device 37 distributes the coating liquid supplied to the manifold 38a from the coating liquid supply pump (not shown) evenly to the entire area of the discharge slit 38b by the manifold 38a, and coats the coating roll from the entire area of the discharge slit outlet 38c. Discharge to the outer peripheral surface of C. A discharge slit outlet 38c is provided on the outer peripheral surface of the rotating coating roll C.
A continuous liquid film F having a uniform film thickness is formed with the coating liquid uniformly discharged from the entire area of the liquid crystal.

Next, the procedure of an intermittent coating method using the coating apparatus 86 of this embodiment will be described. First, preparation is made so that the article to be coated Wm is conveyed on the belt conveyor J at a predetermined interval. Then, the left and right swing operation tools 16, 16
Then, the left and right moving frames 14 and 14 are moved backward to separate the coating roll C from the backing roll B. Next, a liquid film F having a uniform film thickness is formed on the outer peripheral surface of the rotating coating roll C with the coating liquid discharged from the entire area of the discharge slit outlet 38c of the die device 37.

Subsequently, by intermittently rotating the scraping blade 26 of the scraper S in synchronization with the transport of the workpiece Wm, a part of the liquid film F is removed, and the outer peripheral surface of the coating roll C is removed. On the top, a band-shaped liquid film lacking portion R that is long in the roll longitudinal direction is formed with a predetermined band width dimension (coating roll C).
The liquid film portion L is formed at predetermined pitches in the circumferential direction (dimensions along the rotation direction of FIG. 3), and portions other than the liquid film lacking portion R are formed. If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14, 1 are operated by operating the left and right swing operation tools 16, 16.
4, the coating roll C is made to approach the belt conveyor J, and the transfer coating is started on the workpiece Wm conveyed by the belt conveyor J in synchronization with the intermittent rotation of the scraper S. When the liquid film portion L of the rotating coating roll C approaches, the liquid film portion L is transferred to the object to be coated and becomes a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Is approaching, the workpiece W
A band-shaped uncoated area V is formed on m.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated only when the liquid film lacking portion R approaches the surface of the workpiece Wm.
And the coating roll C are separated. By this intermittent moving operation, the object Wm to be coated and the liquid film lacking portion R are completely separated from each other to form an uncoated region V where the coating liquid is not attached to the object Wm at all. it can. As the coating pattern, various patterns shown in FIG. 13 are possible.

If it is confirmed that a small amount of liquid does not remain in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) is necessarily used.
(See FIG. 1). At this time, since there is no intermittent movement of the coating roll C by the intermittent moving device 12, no impact is generated and high-precision coating can be performed.

In this embodiment, the scraper S
The scraping blade 26 of FIG.
Of course, it is possible to change to. Further, the coating apparatus 86 of the present embodiment can also adopt the inverse roll coating method by transporting the workpiece Wm in the direction opposite to the arrow X direction.

(Fourteenth Embodiment) FIG. 16 shows a first embodiment of the present invention.
FIG. 14 is a left side view showing the fourth embodiment, in which a fixed frame and a movable frame are cut away.

The coating apparatus 91 of this embodiment differs from the coating apparatus 76 of the eleventh embodiment (see FIG. 12) in that the die coater 42 is used as the applicator A. The other configuration is substantially the same as that of the eleventh embodiment, and the same reference numerals in the drawings denote the same components. FIG.
In FIG. 6, the illustration of the intermittent moving device 12 and the coating gap adjuster 17 (see FIG. 1) arranged one by one on the left and right is omitted. The rotation direction of each roll is the direction indicated by the arrow in the figure.

In the die coater 42, a manifold is formed inside a head 43 disposed below the coating roll C, and a discharge slit 43c communicating with the manifold is formed over the entire outer circumferential surface of the coating roll C in the longitudinal direction. It is established to face. In the die coater 42, the exit side of the coating roll of the discharge slit 43 c is formed by a doctor edge 44. The doctor edge 44 is attached so as to form a coating gap between the cutting edge 44a and the outer peripheral surface of the coating roll C.

The die coater 42 distributes the coating liquid supplied to the manifold from the coating liquid supply pump (not shown) evenly over the entire area of the discharge slit 43c by the manifold, and the outer periphery of the rotating coating roll C. After applying the coating liquid to the surface, the coating liquid is scraped off with a doctor edge 44 to form a liquid film F having a uniform film thickness.

Next, the procedure of an intermittent coating method using the coating device 36 of this embodiment will be described. First, preparation is made so that the article to be coated Wm is conveyed on the belt conveyor J at a predetermined interval. Then, the left and right swing operation tools 16, 16
Then, the left and right moving frames 14 and 14 are moved backward to separate the coating roll C from the backing roll B. Next, the liquid film F having a uniform film thickness is formed on the outer peripheral surface of the rotating coating roll C by the die coater 42.

Subsequently, by intermittently rotating the scraping blade 26 of the scraper S in synchronization with the transport of the workpiece Wm, a part of the liquid film F is removed, and the outer peripheral surface of the coating roll C is removed. On the top, a band-shaped liquid film lacking portion R that is long in the roll longitudinal direction is formed with a predetermined band width dimension (coating roll C).
The liquid film portion L is formed at predetermined pitches in the circumferential direction (dimensions along the rotation direction of FIG. 3), and portions other than the liquid film lacking portion R are formed. If the formation of the liquid film lacking portion R is confirmed, the left and right moving frames 14, 1 are operated by operating the left and right swing operation tools 16, 16.
4, the coating roll C is made to approach the belt conveyor J, and the transfer coating is started on the workpiece Wm conveyed by the belt conveyor J in synchronization with the intermittent rotation of the scraper S. When the liquid film portion L of the rotating coating roll C approaches, the liquid film portion L is transferred to the object to be coated and becomes a coating film H, and the liquid film lacking portion R of the rotating coating roll C is coated. Is approaching, the workpiece W
A band-shaped uncoated area V is formed on m.

If it is confirmed that a small amount of liquid remains in the liquid film lacking portion R on the outer peripheral surface of the coating roll C, the intermittent moving device 12 (not shown) (see FIG. 1)
Is operated, and only when the liquid film lacking portion R approaches the surface of the workpiece Wm, the workpiece Wm and the coating roll C
Let away.

In the present embodiment, the scraper S
The scraping blade 26 of FIG.
Of course, it is possible to change to. Further, the coating apparatus 86 of the present embodiment can also adopt the inverse roll coating method by transporting the workpiece Wm in the direction opposite to the arrow Y direction.

[0133]

As described in detail above, the present invention has the following excellent effects. In the present invention according to claims 1 and 2 , since a coating film and an uncoated area can be formed on the object to be coated with the rotation of the coating roll, the coating roll is not separated from the object to be coated. Can be coated. As a result, according to the present invention, a high-precision intermittent coating can be performed without a large impact which has conventionally occurred. Claims 1 and 2
In the present invention described above, the outer peripheral surface of the coating roll
No or very low coating liquid in the upper part of the liquid film
The coating material and the coating roll
It is possible to make the separation size very small when separating.
And the impact generated at the time of contact and separation can be extremely reduced. The result
As a result, the present invention eliminates the large impact that has conventionally occurred.
High-precision intermittent coating.

The present invention according to claim 3 provides a coated
The coating film and the uncoated area are formed on the workpiece with the rotation of the tool
The coating roll can be
It can be applied without separating from the surface. As a result, the present invention
Eliminates the large impact that has occurred in the past,
Intermittent coating is possible. According to the present invention described in claim 4 ,
Since there is no or very little, if any, coating liquid in the liquid film lacking portion on the outer peripheral surface of the coating roll, the separation dimension when separating the object to be coated and the coating roll should be extremely small. And the impact generated at the time of separation and contact can be extremely reduced. As a result, according to the present invention, a high-precision intermittent coating can be performed without a large impact which has conventionally occurred.

According to the fifth aspect of the present invention, since the mass of the scraping blade can be reduced, the shock generated even when the scraping blade is intermittently moved is extremely small. As a result, according to the present invention, a high-precision intermittent coating can be performed without a large impact which has conventionally occurred. According to the sixth aspect of the present invention, since the mass of the scraping roll can be reduced, the impact generated even when the scraping roll is intermittently moved is extremely small. As a result, according to the present invention, a high-precision intermittent coating can be performed without a large impact which has conventionally occurred.

[0136] an alien present invention as set forth in claim 7, it is possible to form the uncoated area of the coating film and the strip on the surface of the continuous object coated product. According to the present invention described in claim 8 , a coating film and a band-shaped uncoated area can be formed on the surface of a single sheet of the object to be coated.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, in which (A)
Is a plan view of the whole with a part cut away, and (B) is a left side view.

FIG. 2 is a left side view of the first embodiment of the present invention, in which only main parts are extracted and shown.

FIG. 3 is a left side view showing a second embodiment of the present invention, in which a fixed frame and a movable frame are cut away.

FIG. 4 is a left side view showing a third embodiment of the present invention, in which a fixed frame and a movable frame are cut away.

FIG. 5 is a left side view showing a fourth embodiment of the present invention, in which a fixed frame and a movable frame are cut away.

FIG. 6 is a left side view showing a fifth embodiment of the present invention, in which a fixed frame and a movable frame are cut away.

FIG. 7 is a left side view showing a sixth embodiment of the present invention, in which a fixed frame and a movable frame are cut away.

FIG. 8 shows the seventh embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

FIG. 9 shows the eighth embodiment of the present invention, and is a left side view showing the fixed frame and the movable frame with notches.

FIG. 10 shows the ninth embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame cut away.

FIG. 11 shows the tenth embodiment of the present invention, and is a left side view showing the fixed frame and the movable frame by notching.

FIG. 12 shows the eleventh embodiment of the present invention, and is a left side view showing a fixed frame and a movable frame with notches.

FIG. 13 shows various coating patterns. FIG. 13A is a plan view of a first coating pattern, and FIG.
Is a side view of the same pattern, FIG. (B-1) is a plan view of a second coating pattern, (B-2) is a side view of the same pattern, and FIG. 3 is a plan view of a coating pattern, and (C-2) is a side view of the same pattern.

FIG. 14 is a left side view of the twelfth embodiment of the present invention, in which a fixed frame and a movable frame are cut away.

FIG. 15 shows the thirteenth embodiment of the present invention, and is a left side view showing the fixed frame and the movable frame by notching.

FIG. 16 is a left side view of the fourteenth embodiment of the present invention, showing a fixed frame and a movable frame cut away.

17A and 17B show a conventional coating apparatus, wherein FIG. 17A is a plan view of the entirety, and FIG. 17B is a left side view with a part cut away.

FIG. 18 is a left side view showing another embodiment of the conventional coating apparatus with a part cut away.

[Explanation of symbols]

 A: Applicator B: Backing roll (conveying device for workpiece) C: Coating roll E: Coating liquid H: Coating film J: Conveyor (conveying device for workpiece) L: Liquid film part M: Metering roll N ... Nip roll R ... Liquid film lacking part S ... Scraper T (T-1, T-2) ... Transfer roll U ... Coating liquid reservoir V ... Uncoated area W ... Continuous coated object Wm … Sheet-to-be-coated object 26… Scraping blade 32… Scraping roll

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-139060 (JP, A) JP-B 29-6394 (JP, B1) JP-B 38-1471 (JP, B1) JP-B 40- 1871 (JP, B1) (58) Field surveyed (Int. Cl. ⁶ , DB name) B05C 1/00-1/16 B05C 5/02 B05D 1/26-1/28

Claims (8)

(57) [Claims] A liquid film is continuously formed on an outer peripheral surface of a rotating coating roll, and a part of the liquid film is intermittently removed to form a liquid film portion and a belt-like liquid film long in the longitudinal direction of the roll. The coating film is formed by alternately forming the lacking portion and transferring the liquid film portion of the coating roll to the surface of a continuous coating object that is backed up by the backing roll and conveyed to form a coating film. A long strip-shaped uncoated area is formed between the coating films in the transverse direction of the object to be coated, and the surface of the object to be coated is formed.
When the liquid film lacking portion approaches,
The coating roll is separated from the coating roll.
Coating method. 2. On the outer peripheral surface of a rotating coating roll.
Continuously forms a liquid film and removes part of this liquid film intermittently
The liquid film part and the belt-like liquid long in the roll longitudinal direction
Film lacking parts are formed alternately and conveyed by conveyor
Position the liquid film lacking part between objects to be coated on adjacent sheets.
First, coat the coating roll liquid film on the surface of each workpiece.
Transfer to form a coating film, and the adjacent single-wafer coated object
When the liquid film lacking portion approaches during the
And the coating roll is separated from each other.
Coating method. 3. A carrier for a workpiece and a carrier for a workpiece.
A rotating roll-coated coating roll and a coating
To form a continuous liquid film on the outer surface of the roll
Coat the applicator and carrier for the workpiece.
Scraper located at the entry side of the roll
This scraper has a coating roll
Approach the outer peripheral surface of the
On the outer peripheral surface of the
It is characterized in that the liquid film lacking part is formed intermittently
Coating equipment. 4. The carrier for a workpiece to be coated and the coating.
A separating device that intermittently separates the two from the roll
The coating film roll on the outer peripheral surface of the coating roll.
While the area corresponding to the part approaches the carrier for the workpiece
The coating device according to claim 3 , wherein the two are separated from each other.
Place. 5. The scraper has a cutting edge intermittently.
Equipped with a scraping blade that approaches or abuts the wing roll.
The coating device according to claim 3 or 4, wherein 6. The scraper has a rotating outer peripheral surface.
Scraping roller that approaches or abuts the coating roll
The coating apparatus according to claim 3, further comprising a tool. 7. A buckkin in which the carrier for the object to be coated rotates.
The coating device according to claim 3, which is grohl.
Place. 8. An end tray on which the carrier for the object to be coated rotates.
The coating device according to claim 3, 4, 5, or 6, which is a belt.
Place.