JP6849516B2 - Web coating equipment and its coating method - Google Patents

Description

The present invention relates to a web coating device and a coating method thereof.

Conventionally, a coating device has been proposed in which a coating liquid is applied in stripes on a long web such as a film, a metal plate, paper, or a cloth.

JP-A-2017-355668

In web coating, which has been diversified in recent years, there is a demand to apply a coating liquid to the web in a grid pattern. However, with the conventional method, there is a problem that it is not possible to coat such a web in a grid pattern.

Therefore, in view of the above problems, an object of the present invention is to provide a coating device for coating a grid-like coating portion on a web and a coating method thereof.

The present invention is a web coating device that coats a traveling web with coating portions in a grid pattern, and vertically coated portions extending continuously along the traveling direction of the web are spaced at predetermined intervals in the width direction. A second die that coats the web each time and a rectangular island coating portion that coats the web between adjacent vertical coating portions and at predetermined intervals in the traveling direction. A web coating device with a die.

Further, the present invention is a web coating device for coating a coating portion on a traveling web in a grid pattern, and a horizontal coating portion continuously extending along the width direction of the web is provided in the traveling direction. A third die that coats the web at predetermined intervals and a rectangular island coating portion that is applied to the web between adjacent horizontal coating portions and at predetermined intervals in the width direction. It is a web coating device having 4 dies and 4 dies.

Further, the present invention is a web coating method in which a coating portion is applied to a traveling web in a grid pattern, in which a vertical coating portion in which a first die continuously extends along the traveling direction of the web. Is coated on the web at predetermined intervals in the width direction, and a second die applies a rectangular island coating portion between the adjacent vertical coating portions and at predetermined intervals in the traveling direction. This is a web coating method for coating the web.

Further, the present invention is a web coating method in which a coating portion is applied to a traveling web in a grid pattern, in which a third die extends continuously along the width direction of the web. Is coated on the web at predetermined intervals in the traveling direction, and the fourth die applies a rectangular island coating portion between the adjacent horizontal coating portions and at predetermined intervals in the width direction. This is a web coating method for coating the web.

According to the present invention, the coated portion can be formed in a grid pattern on the traveling web.

It is explanatory drawing of the coating apparatus of Embodiment 1 of this invention. It is the figure of the state which combined the 1st shim and the 1st right division part. It is the figure of the state which combined the 2nd shim and the 2nd lower division part. It is the figure of the state which the vertical coating part was applied to the web W by the 1st die. It is the figure of the state which the island coating part was coated by the 2nd die. It is the figure of the state that the lattice-shaped coating part was coated. It is a figure of the state in which the horizontal coating part was coated on the web W in Embodiment 2 by the 1st die. It is the figure of the state which the island coating part was coated on the web W by the 2nd die. FIG. 5 is a diagram showing a state in which a grid-like coating portion is coated on the web W by the coating device 10 of the second embodiment. It is explanatory drawing of the coating apparatus of Embodiment 3.

The web coating device 10 according to the embodiment of the present invention will be described with reference to the drawings. The web W in the present embodiment is, for example, a film, a metal stay, paper, a cloth, or the like.

Embodiment 1

The coating device 10 of the first embodiment will be described with reference to FIGS. 1 to 6.

(1) Configuration of Coating Device 10 The configuration of the coating device 10 will be described with reference to FIGS. 1 to 3. The coating device 10 has a backup roll 12 for running the web W while holding it at a constant traveling speed V, a first die 14 provided below the backup roll 12, and a first die 14 provided on the side of the backup roll 12. It has 2 dies 16 and a control device 46. The traveling web W passes through the first die 14 while being held by the backup roll 12, and then passes through the second die 16 which is separated from the first die 14.

The backup roll 12 is rotated by a motor 18 to drive the web W at a traveling speed V.

The first die 14 is composed of a first left split portion 22 and a first right split portion 20, and the combined first left split portion 22 and the first right split portion 20 have tips that are tapered in a triangular shape. The first coating port 24 is formed in a slit shape at the tip of the first coating port 24. A first liquid reservoir 26 is formed on the left surface of the first right split portion 20. The first liquid reservoir 26 is provided along the width direction of the first die 14. A first liquid passage 28 is formed from the first liquid reservoir 26 toward the first coating port 24. The first liquid passage 28 is formed along the mating surface of the first left split portion 22 and the first right split portion 20. A thin plate-shaped first shim 30 is interposed between the first left split portion 22 and the first right split portion 20. As shown in FIG. 2, a first supply port 36 is opened in the central portion of the first right split portion 20 in the width direction. As shown in FIG. 1, one end of the first supply pipe 38 is connected to the first supply port 36, and the first pump 40 is connected to the other end. The first pump 40 pumps a constant amount of the coating liquid per unit time. A first tank 42 that supplies the coating liquid to the first pump 40 is connected to the first pump 40.

The second die 16 is composed of a second upper division portion 50 and a second lower division portion 52, and the combined second upper division portion 50 and the second lower division portion 52 have tips that are tapered in a triangular shape. A second coating port 54 is formed in a slit shape at the tip of the second coating port 54. A second liquid reservoir 56 is formed on the left surface of the second lower split portion 52. The second liquid reservoir 56 is provided along the width direction of the second die 16. A second liquid passage 58 is formed from the second liquid reservoir 56 toward the second coating port 54. The second liquid passage 58 is formed along the mating surface of the second upper division portion 50 and the second lower division portion 52. A thin plate-shaped second shim 60 is interposed between the second upper division portion 50 and the second lower division portion 52. As shown in FIG. 3, a second supply port 66 is opened in the central portion of the second lower division portion 52 in the width direction. As shown in FIG. 1, one end of the second supply pipe 68 is connected to the second supply port 66, and the second pump 70 is connected to the other end. The second pump 70 pumps a constant amount of the coating liquid per unit time, and can perform an intermittent operation of turning on / off the pumping at predetermined time intervals. A second tank 72 for supplying the coating liquid is connected to the second pump 70. The coating liquid stored in the second tank 72 is the same as the coating liquid stored in the first tank 42. Therefore, the first die and the second tank 72 may be formed by one tank.

(2) First shim 30 and second shim 60
The first shim 30 and the second shim 60 will be described with reference to FIGS. 2 to 3.

As shown in FIG. 2, the first shim 30 is formed in a comb shape, and a rectangular first base portion 32 extending along the width direction of the first die 14 is formed along the base portion of the first left split portion 22. Have been placed. A pair of side portions 44, 44 project from both ends of the first base portion 32 made of a metal plate, and a plurality of first comb teeth 34 project like comb teeth from between the pair of side portions 44, 44 at equal intervals. The distance between the adjacent first comb teeth 34 and the first comb teeth 34 is a, and the widthwise dimension of the first comb teeth 34 is b. In FIG. 2, four first comb teeth 34 project, and these first comb teeth 34 pass from the base portion of the first right split portion 20 to the first liquid reservoir portion 26 and reach the first coating port 24. Then, when the first shim 30 is used, the coating liquid is discharged from between the adjacent first comb teeth 34 and 34 to coat the coating portion on the web W, and in the portion where the first comb teeth 34 are present, The first coating port 24 is closed, the coating liquid is not discharged to the web W, and the coating portion is not coated.

As shown in FIG. 3, the second shim 60 is formed in a comb shape, and a rectangular second base portion 62 extending along the width direction of the second die 16 is formed along the base portion of the second upper split portion 50. Have been placed. A pair of side portions 74, 74 project from both ends of the second base portion 62 made of a metal plate, and a plurality of second comb teeth 64 project from between the pair of side portions 74, 74 in a comb-like manner at equal intervals. The distance between the adjacent second comb teeth 64 and the second comb teeth 64 is b, and the width dimension of the second comb teeth 64 is a. In FIG. 3, three second comb teeth 64 protrude, and these second comb teeth 64 pass from the base portion of the second lower division portion 52 through the second liquid reservoir portion 56 and reach the second coating port 54. Then, when the second shim 60 is used, the coating liquid is discharged from between the adjacent second comb teeth 64 and 64 to coat the coating portion on the web W, and in the portion where the second comb teeth 64 are present, The second coating port 54 is closed, the coating liquid is not discharged to the web W, and the coating portion is not coated.

The first comb tooth 34 protruding from the first base portion 32 of the first shim 30 is located between the second comb teeth 64 and 64 of the second shim 60. That is, the first comb teeth 34 of the first shim 30 and the second comb teeth 64 of the second shim 60 project alternately. The width dimension b of the first comb tooth 34 is the same as the distance b between the adjacent second comb teeth 6 and 64 of the second shim 60. On the contrary, the dimension a in the width direction of the second comb teeth 64 of the second shim 60 is the same as the distance a between the adjacent first comb teeth 34 and 34 of the first shim 30.

(3) Electrical Configuration of Coating Device 10 Next, the electrical configuration of the coating device 10 will be described with reference to FIG. The coating device 10 is provided with a control device 46. The control device 46 is composed of a computer, and is provided with a display device, a storage device, and an input device such as a keyboard and a mouse for input / output by an operator.

A motor 18, a first pump 40, and a second pump 70 are connected to the control device 46. The control device 46 causes the web W to travel at a traveling speed V by rotating the backup roll 12 by the motor 18, and supplies a constant amount of coating liquid per unit time to the first die 14 by the first pump 40. Further, by controlling the second pump 70, a constant amount of coating liquid is pumped to the second die 16 per unit time, and the second pump 70 is turned ON / OFF to supply the coating liquid to the second die 16. Intermittent supply of work liquid.

(4) Coating Method of Coating Device 10 Next, a coating method for forming a grid-shaped coating portion 3 as shown in FIG. 6 on the web W using the coating device 10 will be described.

Before explaining the coating method, stripe coating, intermittent coating, and intermittent stripe coating will be described.

“Striped coating” means that, as shown in FIG. 4, the vertical coating portion 1 is coated along the traveling direction of the web W, and the vertical coating portion 1 is applied at predetermined intervals in the width direction of the web W. Refers to the method of coating.

As shown in FIG. 7, “intermittent coating” means coating the horizontal coating portion 4 along the width direction of the traveling web W, and coating the horizontal coating portion 4 at predetermined intervals in the traveling direction. The method of construction.

As shown in FIGS. 5 and 6, "intermittent stripe coating" means that stripe coating and intermittent coating are performed at the same time, and rectangular island coating portions 2 and 5 are provided at predetermined intervals in the traveling direction and the width direction. It is a method of painting every time.

In the present embodiment, the first die 14 performs stripe coating, and the second die 16 performs intermittent stripe coating.

Next, the coating method for performing the grid-like coating will be described in order.

In the first step, the web W running on the backup roll 12 is striped as shown in FIG. 4 by the first die 14, and the vertical coating portion 1 is formed as shown in FIG. In this case, the stripe coating is performed from a position c from the ear portion of the web W. The width of the vertical coating portion 1 is a, and the distance between the adjacent vertical coating portions 1 and 1 is b. As shown in FIG. 2, the width a of the vertical coating portion 1 is determined by the width a of the adjacent first comb teeth 34 of the first shim 30, and the distance b between the adjacent vertical coating portions 1 and 1 is shown in FIG. It is determined by the width b of the first comb tooth 34 of the first shim 30 shown in 2. The first die 14 coats the vertical coating portion 1 with a constant coating thickness.

In the second step, the web W having the striped vertical coating portion 1 is further traveled by the backup roll 12 to reach the position of the second die 16.

In the third step, the web W running on the backup roll 12 is intermittently striped as shown in FIG. 5 by the second die 16, and the island coating portion 2 is formed as shown in FIG. .. In this case, the intermittent stripe coating is performed from the position of the distance a + c from the selvage portion of the web W. The dimension of the island coating portion 2 in the width direction is b, and the dimension in the traveling direction is d. The distance between the adjacent island coating portions 2 in the width direction is a, and the distance between the island coating portions 2 in the traveling direction is e. As shown in FIG. 3, the dimension b in the width direction of the island coating portion 2 is determined by the distance b between the adjacent second comb teeth 64 and 64 of the second shim 60, and is determined by the distance b of the adjacent island coating portions 2 and 2. The interval a is determined by the width a of the second comb teeth 64 of the second shim 60. Further, the distance e between the second comb teeth 64 and 64 adjacent to the dimension d in the traveling direction of the island coating portion 2 is determined by the time for intermittent coating of the second pump 70. That is, the control device 46 turns on the second pump 70 so that the second die 16 can be coated by the distance d, and turns off the second pump 70 so that the second die 16 cannot be coated by the distance e. Further, the second die 16 coats the island coating portion 2 with the same constant thickness as the coating thickness applied by the first die 14. In addition, in FIG. 5, in order to show the coating state of the second die 16 in an easy-to-understand manner, the vertical coating portion 1 is shown by a dotted line. 3 is formed.

As a result, as shown in FIG. 6, the island coating portion 2 is coated between the vertical coating portion 1 and the adjacent vertical coating portions 1 and 1, and these are combined to form an overall grid pattern. The coating portion 3 is formed with a constant coating thickness.

(5) Effect According to the present embodiment, the grid-like coating portion 3 can be applied to the web W by combining the stripe coating and the intermittent stripe coating.

Further, since the island coating portion 2 is coated between the vertical coating portions 1, the portions coated by the first die 14 and the second die 16 do not overlap, and the coating is always applied with a constant coating thickness. Can be constructed.

Further, not only the grid-like coating portion 3 can be thinly formed on the web W, but also the coating thickness can be made thin or thick.

Further, by changing the shapes of the first shim 30 and the second shim 60 and changing the timing of the intermittent coating by the second pump 70, the pattern of the lattice-shaped coating portion 3 can be arbitrarily changed.

Embodiment 2

Next, the coating device 10 of the second embodiment will be described with reference to FIGS. 7 to 9.

Also in the present embodiment, the grid-like coating portion 3 as shown in FIG. 9 is coated, but the following points are different between the present embodiment and the coating apparatus 10 of the first embodiment.

In the first die 14, not the stripe coating is performed, but the intermittent coating is performed to form the horizontal coating portion 4 as shown in FIG. 7. Therefore, the first shim 30 is not provided with the first comb tooth 34, and all the coating liquid is applied from the first coating port 24, and the first pump 40 is operated intermittently.

Next, in the second die 16, the island coating portion 5 is coated in the same manner as in the first embodiment, but the coating positions are different, and as shown in FIG. 8, the adjacent horizontal coating portions 4 and 4 are coated. Paint so that there is a gap in the traveling direction. In addition, in FIG. 8, in order to show the coating state of the second die 16 in an easy-to-understand manner, the horizontal coating portion 4 is shown by a dotted line. 3 is formed.

As a result, the horizontal coating portion 4 is intermittently coated by the first die 14, and the island coating portion 5 is intermittently coated by the second die 16 so that the grid-like coating portion as shown in FIG. 9 is applied. 3 can be applied.

Embodiment 3

Next, the coating device 10 of the third embodiment will be described with reference to FIG.

The difference between the present embodiment and the first embodiment is the structure of the first die 14 and the second die 16. In the present embodiment, the first die 14 and the second die 16 are integrated. That is, the integrated die 80 is composed of an upper division portion 82, a middle division portion 84, and a lower division portion 86. At the tips of the integrated upper division portion 82, middle division portion 84, and lower division portion 86, a first coating port 24 and a second coating port 54 are provided in a slit shape in the width direction in order from the bottom. There is.

A first liquid reservoir 26 is formed on the upper surface of the lower division portion 86, and a first liquid passage 28 is formed from the first liquid reservoir 26 toward the first coating port 24. A first shim 30 is interposed between the middle division portion 84 and the lower division portion 86. The first supply port 36 is open in the first liquid reservoir 26.

A second liquid reservoir 56 is formed on the upper surface of the middle division portion 84, and a second liquid passage 58 is formed from the second liquid reservoir 56 toward the second coating port 54. A second shim 60 is interposed between the upper division portion 82 and the middle division portion 84. A second supply port 66 is opened in the second liquid reservoir 56.

With the above configuration, a die 80 in which the first die 14 and the second die 16 are integrated is formed, and the die 80 forms a grid-like coating portion 3 as in the first embodiment. Can be painted.

According to this embodiment, since the two dies 14 and 16 are integrated, the installation space can be reduced.

Change example

Next, a modification example will be described.

(1) Change example 1
In the above embodiment, the first die 14 and the second die 16 are provided on the outer periphery of one backup roll 12, but instead of this, a first backup roll and a second backup roll are provided, and the first backup roll A first die may be provided on the outer circumference, and a second die 16 may be provided on the outer circumference of the second backup roll.

(2) Change example 2
In the first embodiment, when intermittent stripe coating is applied to the web W with the second die 16, the second pump 70 is turned ON / OFF to intermittently supply the coating liquid.

Instead of this, a three-way valve is provided in the middle of the second supply pipe 68, the inlet of the three-way valve is connected to the second pump 70, the first outlet is connected to the second supply port 66 of the second die 16, and the second The outlet is connected to the circulation pipe of the second tank 72. The control device 46 controls the three-way valve while continuously operating the second pump 70, and when the coating liquid is applied by the second die 16, the first outlet is in the open state and the second outlet is in the closed state. And. When the coating liquid is not applied, the first outlet is closed and the second outlet is open.

As a result, intermittent coating can be performed by the second die.

Further, the intermittent coating on the first die 14 and the second die 16 in the second embodiment can also be performed intermittently by providing a three-way valve as in the above modified example.

(3) Others Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

W ... Web, 1 ... Vertical coating part, 2 ... Island coating part, 3 ... Lattice coating part, 4 ... Horizontal coating part, 5 ... Island coating part Engineering department, 10 ... coating device, 12 ... backup roll, 14 ... 1st die, 16 ... 2nd die, 30 ... 1st shim, 46 ... control device, 60・ ・ ・ 2nd sim

Claims (12)

It is a web coating device that coats the coating part in a grid pattern on the running web.
A first die that coats the web with vertically coated portions that continuously extend along the traveling direction of the web at predetermined intervals in the width direction.
A second die that coats the rectangular island coating portion between the adjacent vertical coating portions and at predetermined intervals in the traveling direction, and
Web coating equipment with. The first die is
The liquid reservoir provided inside the first die and
A coating port opened at the tip of the first die and in a slit shape along the width direction.
Inside the first die, a liquid passage extending from the liquid reservoir to the coating port,
A first shim that closes the liquid passage and the coating port at predetermined intervals in the width direction, and
A first supply means for continuously supplying a fixed amount of coating liquid to the liquid reservoir,
The web coating device according to claim 1. The second die is
The liquid reservoir provided inside the second die and
A coating port opened in a slit shape at the tip of the second die and along the width direction.
Inside the second die, a liquid passage extending from the liquid reservoir to the coating port,
A second shim that closes the liquid passage and the coating port at predetermined intervals in the width direction, and
A second supply means for intermittently supplying a fixed amount of coating liquid to the liquid reservoir,
The web coating device according to claim 1. The web is driven by a rotating backup roll.
The first die is provided on the outer circumference of the backup roll.
The second die is the outer circumference of the backup roll and is provided at a position away from the first die.
The web coating device according to claim 1. The first die and the second die are integrated,
The web is driven by a rotating backup roll.
The integrated first die and the second die are provided on the outer periphery of the backup roll.
The web coating device according to claim 1. It is a web coating device that coats the coating part in a grid pattern on the running web.
A third die that coats the web with a horizontal coating portion that extends continuously along the width direction of the web at predetermined intervals in the traveling direction.
A fourth die that coats the rectangular island coating portion between the adjacent horizontal coating portions and at predetermined intervals in the width direction, and
Web coating equipment with. The third die is
The liquid reservoir provided inside the third die and
A coating port opened in a slit shape at the tip of the third die and along the width direction.
Inside the third die, a liquid passage extending from the liquid reservoir to the coating port,
A third supply means for intermittently supplying a fixed amount of coating liquid to the liquid reservoir,
The web coating device according to claim 6. The fourth die is
The liquid reservoir provided inside the 4th die and
A coating port opened in a slit shape at the tip of the fourth die and along the width direction.
Inside the fourth die, a liquid passage extending from the liquid reservoir to the coating port, and
A fourth shim that closes the liquid passage and the coating port at predetermined intervals in the width direction, and
A fourth supply means for intermittently supplying a fixed amount of coating liquid to the liquid reservoir,
The web coating device according to claim 6. The web is driven by a rotating backup roll.
The third die is provided on the outer circumference of the backup roll.
The fourth die is the outer circumference of the backup roll and is provided at a position away from the third die.
The web coating device according to claim 6. The third die and the fourth die are integrated,
The web is driven by a rotating backup roll.
The integrated third die and the fourth die are provided on the outer periphery of the backup roll.
The web coating device according to claim 6. It is a web coating method that coats the coated parts in a grid pattern on the running web.
The first die coats the web with vertically coated portions that continuously extend along the traveling direction of the web at predetermined intervals in the width direction.
The second die coats the rectangular island coating portion between the adjacent vertical coating portions and at predetermined intervals in the traveling direction on the web.
Web coating method. It is a web coating method that coats the coated parts in a grid pattern on the running web.
The third die coats the web with the horizontal coating portion continuously extending along the width direction of the web at predetermined intervals in the traveling direction.
The fourth die coats the rectangular island coating portion between the adjacent horizontal coating portions and at predetermined intervals in the width direction on the web.
Web coating method.

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