Roll coater

Abstract

To provide a roll coater in which dust or the like is hard to be collected at a part where a film and a coating are contacted and a problem in painting is hard to occur, while smoothing a surface of the coating applied on an applicator roll.SOLUTION: A roll coater 2 is equipped with an applicator roll 3 and a film 7. The applicator roll 3 applies a coating 8 on a coated article 9. The film 7 opposes to a surface of the coating 8 applied by the applicator roll 3. The film 7 has a contacting portion 71. The contacting portion 71 is an end portion in a rotating direction D1 of the applicator roll 3 in the film 7. The contacting portion 71 contacts with the surface of the coating 8 applied to the coated article 9 of the coating 8 applied by the applicator roll 3. An end edge in the rotating direction D1 of the applicator roll 3 in the contacting portion 71 is an end edge that does not have a depression.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a roll coater, and more particularly to a roll coater that applies paint to a workpiece by an applicator roll.

Background Art

[0002] Patent Document 1 discloses a roll coating apparatus. By providing a resin film that contacts the coating liquid on the applicator roll, this roll coating apparatus aims to smooth the coating film and suppress the occurrence of vertical stripe patterns called roping (roll marks).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the roll coating apparatus, when a resin film contacts the coating liquid applied to the applicator roll, there is a possibility that dust contained in the coating liquid or dust that enters from outside the system may accumulate at the contact portion between the coating liquid and the resin film. If the accumulated dust or the like is applied to the workpiece together with the coating liquid by the applicator roll, there is a risk of coating defects.

[0005] In view of the above reasons, the present disclosure is made, and an object thereof is to provide a roll coater in which coating defects are less likely to occur.

Means for Solving the Problems

[0006] A roll coater according to one aspect of the present disclosure includes an applicator roll for applying paint to an object to be coated, and a film facing the surface of the paint applied to the applicator roll. The film has a contact portion that is an end portion in the rotational direction of the applicator roll in the film and that contacts the surface of the paint to be applied to the object to be coated among the paint applied to the applicator roll. An edge in the rotational direction of the applicator roll at the contact portion is an edge without a recess.

Effect of the Invention

[0007] In the roll coater according to the above aspect, it is possible to make it difficult to cause painting defects.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0009] (1) Embodiment The roll coater 2 of the present embodiment constitutes a part of the painting equipment 1, as shown in FIG. 1, for example. The painting equipment 1 is a painting line that conveys the plate-shaped object to be painted 9 and continuously paints the conveyed object to be painted 9 with the roll coater 2.

[0010] The object to be painted 9 painted by the roll coater 2 is a metal plate, specifically, a steel plate. The steel plate is, for example, an aluminum-zinc alloy plated steel plate such as a galvanized steel plate (registered trademark) or an SGL (registered trademark) steel plate, a zinc-plated steel plate, or a hot-dip aluminum-plated steel plate. Note that the object to be painted 9 may be a metal plate other than a steel plate, for example, an aluminum plate, a titanium plate, or the like. Further, the object to be painted 9 is not limited to a metal plate and may be a slate plate, a plywood, paper, an organic resin film, or the like.

[0011] The painting equipment 1 of the present embodiment further includes a drying device 10. The drying device 10 is located on the downstream side of the roll coater 2. The drying device 10 is, for example, a drying furnace. The drying device 10 heats the object to be painted 9 to which the paint 8 has been applied by the roll coater 2 and dries and cures the paint 8 applied to the object to be painted 9. Note that the drying device 10 is not limited to a drying furnace. Further, the painting equipment 1 may not include the drying device 10.

[0012] The roll coater 2 applies the paint 8 to the object to be painted 9 using an applicator roll (coating roll) 3. The roll coater 2 of the present embodiment further has a paint pan 4 and a pickup roll 5 in addition to the applicator roll 3.

[0013] The paint pan 4 stores the paint 8. A part of the circumferential direction of the pickup roll 5 is immersed in the paint 8 stored in the paint pan 4. The pickup roll 5 rotates, for example, by the power output from a motor with the central axis of the pickup roll 5 as the rotation axis 50. By rotating the pickup roll 5 in this way, the pickup roll 5 lifts the paint 8 stored in the paint pan 4 and applies it to the applicator roll 3.

[0014] The applicator roll 3 rotates about the central axis of the applicator roll 3 as the rotation axis 30 by the power output from, for example, a motor. By rotating the applicator roll 3 in this way, the applicator roll 3 applies the paint 8 applied to the applicator roll 3 to the surface of the object to be coated 9.

[0015] As shown in FIG. 2, the width (dimension in the direction of the rotation axis 30) B1 of the applicator roll 3 is larger than the width (dimension in the direction of the rotation axis 30) B2 of the object to be coated 9 (see FIG. 1). The applicator roll 3 applies the paint 8 over the entire length in the width direction (direction of the rotation axis 30) of the object to be coated 9.

[0016] The outer peripheral surface 31 of the applicator roll 3 has a coating portion 32 that is a portion corresponding to the object to be coated 9 and applies the paint 8 to the object to be coated 9. The coating portion 32 is constituted by an intermediate portion in the direction of the rotation axis 30 of the outer peripheral surface 31 of the applicator roll 3. In the present embodiment, in FIG. 2, the region surrounded by a pair of two-dot chain lines drawn on both sides in the direction of the rotation axis 30 of the outer peripheral surface 31 of the applicator roll 3 is the coating portion 32.

[0017] As shown in FIG. 1, the rotation direction D1 of the applicator roll 3 of the present embodiment is opposite to the rotation direction D2 of the pickup roll 5. Note that the rotation direction D1 of the applicator roll 3 may be the same as the rotation direction D2 of the pickup roll 5. Further, the roll coater 2 of the present embodiment employs a bottom feed method of supplying the paint 8 from below the pickup roll 5, but a top feed method of supplying the paint 8 from above the pickup roll 5 may also be employed. Further, the means for supplying the paint 8 to the applicator roll 3 is not limited to the pickup roll 5.

[0018] The roll coater 2 of this embodiment further has a backup roll 6 that supports the workpiece 9 being conveyed by the painting equipment 1. The backup roll 6 is arranged at a position facing the applicator roll 3. The applicator roll 3 applies the paint 8 applied to the outer peripheral surface 31 to the surface of the workpiece 9 passing between the applicator roll 3 and the backup roll 6.

[0019] At the portion of the backup roll 6 facing the workpiece 9, with the central axis of the backup roll 6 as the rotation axis 60, it rotates in the same direction as the traveling direction of the workpiece 9. In a state where the backup roll 6 rotates in this way, when the applicator roll 3 rotates, the paint 8 applied to the applicator roll 3 is applied to the surface of the workpiece 9 supported by the backup roll 6. Note that the backup roll 6 may rotate by the power output from the motor, or may rotate by the force received from the steel plate being conveyed by the painting equipment 1.

[0020] The rotation direction D1 of the applicator roll 3 of this embodiment is the same as the rotation direction D3 of the backup roll 6. That is, the roll coater 2 of this embodiment is a reverse roll coater in which the applicator roll 3 rotates in the direction opposite to the traveling direction of the workpiece 9.

[0021] In this embodiment, the workpiece 9 is supported by the backup roll 6 from the side opposite to the applicator roll 3, but the member that supports the workpiece 9 is not limited to the backup roll 6. For example, when the surface of the workpiece 9 opposite to the surface to be painted by the roll coater 2 is painted by another roll coater, the workpiece 9 may be supported by the applicator roll of the other roll coater. Also, the workpiece 9 may be supported by a member other than a roll, such as a belt.

[0022] The roll coater 2 further has a film 7. The film 7 is located above the applicator roll 3 and faces the surface of the paint 8 applied to the applicator roll 3. In the present disclosure, "facing" means that at least a part of the film 7 faces the surface of the paint 8 applied to the applicator roll 3.

[0023] The film 7 is a flexible resin film and is formed from, for example, polyethylene terephthalate, polypropylene, polyethylene, polytetrafluoroethylene, etc. Note that the film 7 may be formed from other resins or materials other than resins.

[0024] The thickness of the film 7 is preferably, for example, 100 μm or more and 500 μm or less. When the thickness of the film 7 is 100 μm or more, the film 7 is less likely to be torn. Also, when the thickness of the film 7 is 500 μm or less, roping (roll marks) is less likely to occur. Note that the thickness of the film 7 is not limited and may be less than 100 μm or may exceed 500 μm.

[0025] The roll coater 2 of the present embodiment further has a jig 11 for holding the film 7. When the rotation direction D1 of the applicator roll 3 is set to the rear and the direction opposite to the rotation direction D1 of the applicator roll 3 is set to the front, the jig 11 is attached to a fixing member such as a member that rotatably supports the pickup roll 5 and the applicator roll 3, and supports the rear end of the film 7. The film 7 protrudes forward from the portion supported by the jig 11, and the front edge of the film 7 is a free end that is not restricted from displacement by the jig 11 and can move freely. Note that the film 7 may be attached to the jig 11 so as to protrude obliquely downward or obliquely upward in front from the portion supported by the jig 11. Also, both or either the attachment position of the jig 11 to the fixing member and the attachment position of the film 7 to the fixing member may be changeable. In this case, the position of the film 7 with respect to the applicator roll 3 can be changed according to painting conditions and the like.

[0026] As shown in FIG. 2, the width B3 (dimension in the direction of the rotation axis 30) of the film 7 is smaller than the width B1 of the applicator roll 3 and larger than the width B2 of the object 9 to be coated. The front end portion of the film 7 bends along the outer peripheral surface 31 of the applicator roll 3 over the entire direction of the rotation axis 30 and contacts the surface of the paint 8 applied to the applicator roll 3. In the film 7 of the present embodiment, the entire portion 70 from the position directly above the rotation axis 30 of the applicator roll 3 to the front edge of the film 7 located in front of this position contacts the surface of the paint 8 applied to the applicator roll 3. Note that the length in the circumferential direction of the applicator roll 3 where the film 7 contacts the surface of the paint 8 is not limited. Further, although the film 7 of the present embodiment contacts the surface of the paint 8 due to its own weight, for example, the roll coater 2 may be provided with a pressing means such as a roll that presses the film 7 toward the surface of the paint 8.

[0027] The portion 70 is composed of a first portion 71 (the portion marked with high-density dots in FIG. 2) and a second portion 72 (the portion marked with low-density dots in FIG. 2). The first portion 71 is the middle portion of the portion 70 in the direction of the rotation axis 30. The first portion 71 faces the coating portion 32 of the applicator roll 3, and the entire first portion 71 contacts the surface of the paint 8 to be applied to the object 9 to be coated. That is, the first portion 71 constitutes a contact portion that contacts the surface of the paint 8 applied to the object 9 among the paint 8 applied to the applicator roll 3. Hereinafter, the first portion 71 is referred to as the contact portion 71.

[0028] The second portion 72 is both end portions of the portion 70 in the direction of the rotation axis 30. The second portion 72 does not face the coating portion 32 of the applicator roll 3 and contacts only the surface of the paint 8 that is not applied to the object 9 among the paint 8 applied to the applicator roll 3.

[0029] When painting the object to be painted 9 while the applicator roll 3 rotates, the entire front end (portion 70) of the film 7 including the contact portion 71 contacts the surface of the paint 8 applied to the applicator roll 3, thereby smoothing the surface of the paint 8. For this reason, the application of the paint 8 to the object to be painted 9 by the applicator roll 3 is likely to be appropriately performed, and painting defects are less likely to occur.

[0030] Also, by smoothing the surface of the paint 8 with the film 7 as described above, it becomes difficult for a painting defect called roll marks to occur. Roll marks are a plurality of streaks formed on the surface of the paint (paint film) 8 applied to the object to be painted 9 and extending in the advancing direction of the object to be painted 9. These roll marks are likely to occur when the rotation directions of the respective rolls are the same in the opposing portions of the two rolls, such as the applicator roll 3 and the pickup roll 5 in the present embodiment, which is a natural rotation. When the two rolls are in natural rotation, the pressure gradient of the paint 8 near the outlet of the gap formed between the two rolls is likely to become positive, and as a result, rib-shaped streaks are likely to be formed on the surface of the paint 8. And when this streak is transferred to the object to be painted 9, there is a possibility that roll marks will occur on the object to be painted 9. In the present embodiment, even if rib-shaped streaks are formed on the surface of the paint 8 applied to the applicator roll 3, the surface of this paint 8 is smoothed by the film 7. For this reason, roll marks are less likely to occur.

[0031] Also, as shown in FIG. 1, the roll coater 2 of the present embodiment is a reverse roll coater, and the applicator roll 3 rotates in a direction opposite to the advancing direction of the object to be painted 9. For this reason, the thickness of the paint 8 applied to the object to be painted 9 can be easily adjusted, and in this respect as well, roll marks are less likely to occur on the object to be painted 9.

[0032] Further, as shown in FIG. 2, the contact portion 71 of the present embodiment is configured by an intermediate portion in the direction of the rotation axis 30 among the front end portions of the film 7, and does not include both end portions in the direction of the rotation axis 30 among the front end portions of the film 7. However, the contact portion 71 may extend over the entire length in the width direction of the film 7, for example, when the width B3 of the film 7 is equal to or less than the width B2 of the object to be coated 9.

[0033] As shown in FIGS. 2 and 3, the front edge 73 of the contact portion 71 is constituted by an intermediate portion of the front edge of the film 7. The edge 73 does not have a recess that is recessed rearward. In the present embodiment, the front edge of the film 7 is formed in a straight line inclined with respect to the rotation axis 30 of the applicator roll 3 when viewed in the thickness direction of the film 7. As a result, the edge 73 is positioned more forward at a portion closer to one end in the direction of the rotation axis 30. That is, the contact portion 71 is formed in a trapezoidal shape having an inclined edge 73 when viewed in the thickness direction of the film 7.

[0034] Since the edge 73 of the contact portion 71 of the present embodiment does not have a recess in this way, in the portion where the contact portion 71 contacts the paint 8, dust 80 (see FIG. 7), aggregates, or cured or semi-cured paint, etc. (hereinafter simply referred to as dust 80, etc.) contained in the paint 8 is less likely to gather.

[0035] For example, as shown in FIG. 7, when a recess 74 recessed rearward is formed in the edge 73 of the contact portion 71, dust 80, etc. are likely to gather near the rear end portion of the recess 74 during painting by the roll coater 2.

[0036] The reason is considered as follows. As shown in FIG. 7, when there is a V-shaped recess 74 at the edge 73 of the contact portion 71, each side of the V-shaped recess 7 receives the force in the rotation direction D1 of the applicator roll from the paint 8. That is, in this case, a force acts on the film 7 to close the V-shaped recess 74, and the film 7 tends to buckle so that the rear end portion of the recess 74 (the connecting portion of both sides of the V-shaped recess 7) bulges. As a result, a local negative pressure is generated between the bulged portion of the film 7 and the applicator roll 3, making it easier for the paint 8 to flow in, and it becomes easier for foreign matters that have passed through the film 7 to stagnate.

[0037] When dust 80 etc. accumulates at the portion where the contact portion 71 and the paint 8 come into contact in this way, as shown in FIG. 7, a dust drag that flows downstream of the film 7 together with the paint 8 applied to the applicator roll 3 occurs, and the dust 80 etc. adheres to the object to be painted 9 together with the paint 8, resulting in painting defects.

[0038] However, since the edge 73 of the contact portion 71 of the present embodiment has no recess over the entire length of the edge 73 as shown in FIG. 3, it is difficult for dust 80 etc. contained in the paint 8 to accumulate at the portion where the contact portion 71 and the paint 8 come into contact. As a result, it is difficult for painting defects to occur.

[0039] Note that the "recess" in the present disclosure means a recessed portion where only the front is open among the front and the width direction of the film 7 (the direction of the rotation axis 30 of the applicator roll 3). Further, the recess does not have to be formed at least at the edge 73 of the contact portion 71. For this reason, for example, recesses may be formed at both end portions of the front edge of the film 7 that do not constitute the edge 73 of the contact portion 71.

[0040] Further, although the edge 73 of the contact portion 71 shown in FIG. 3 is formed in a linear shape inclined so that the portion closer to one end in the direction of the rotation axis 30 is located more forward, it may be curved so that the portion closer to one end in the direction of the rotation axis 30 is located more forward.

[0041] Further, the edge of the contact portion 71 does not have to have a recess, and for example, it may have the shape shown in FIGS. 4 to 6. The edge 73 of the contact portion 71 shown in FIG. 4 has the middle portion in the direction of the rotation axis 30 located most forward, and the portions closer to both ends in the direction of the rotation axis 30 are located more rearward. The edge 73 is composed of a straight portion 75 that constitutes a range from the middle portion to one end in the direction of the rotation axis 30 and a straight portion 76 that constitutes a range from the middle portion to the other end in the direction of the rotation axis 30. Each of the straight portions 75 and 76 is inclined so as to be located more rearward as it is farther from the middle portion of the edge 73 in the direction of the rotation axis 30.

[0042] The edge 73 of the contact portion 71 shown in FIG. 5 is curved so as to protrude forward. That is, also in this edge 73, the middle portion in the direction of the rotation axis 30 is located most forward, and the portions closer to the middle portion in the direction of the rotation axis 30 are located more forward. The edge 73 of the contact portion 71 shown in FIG. 6 is formed in a straight line shape parallel to the direction of the rotation axis 30 of the applicator roll 3.

[0043] It is preferable that the ratio of the maximum dimension L1 to the minimum dimension L2 of the contact portion 71 shown in FIGS. 3 to 5 is 1.2 or more. Here, the maximum dimension L1 is the maximum value of the dimensions of the contact portion 71 in the rotation direction D1 of the applicator roll 3, and the minimum dimension L2 is the dimension of the contact portion 71 in the rotation direction D1 of the applicator roll 3 and is positive. When the ratio of the maximum dimension L1 to the minimum dimension L2 is 1.2 or more in this way, in the portion where the contact portion 71 and the paint 8 are in contact, the paint 8 easily flows to the location facing the minimum dimension L2, and it becomes more difficult for dust 80 and the like contained in the paint 8 to gather in that portion. Further, it is more preferable that the ratio is 1.5 or more, and it is more preferable that the ratio is 2.0 or more. Note that the ratio is not limited and may be less than 1.2.

[0044] (2) Examples and Comparative Examples Hereinafter, examples and comparative examples will be described. In Examples 1 to 16 and Comparative Examples 1 to 8, the roll coater (reverse roll coater) shown in FIG. 1 was prepared. However, the roll coaters 2 in Examples 1 to 16 and Comparative Examples 5 to 8 have the film 7, while the roll coaters 2 in Comparative Examples 1 to 4 do not have the film 7. In Examples 1 to 16 and Comparative Examples 1 to 8, the applicator roll 3 is a rubber roll, and the pickup roll 5 is a metal roll. The roll diameter of each of the applicator roll 3 and the pickup roll 5 in Examples 1 to 16 and Comparative Examples 1 to 8 is 300 mm.

[0045] The films 7 in Examples 1 to 16 and Comparative Examples 5 to 8 are made of polyethylene terephthalate. The shape of the film 7 is as shown in Table 1. That is, the films 7 in Examples 1 to 4 have the shape shown in FIG. 3. The films 7 in Examples 5 to 8 have the shape shown in FIG. 4. The films 7 in Examples 9 to 12 have the shape shown in FIG. 5. The films 7 in Examples 13 to 16 have the shape shown in FIG. 6. The films 7 in Comparative Examples 5 to 8 have the shape shown in FIG. 7.

[0046]

Table 1

[0047] The contact portion 71 of the films 7 in Examples 1 to 16 and Comparative Examples 5 to 8 has a maximum dimension L1 (see FIGS. 2 to 7) of 60 mm. The contact portion 71 of the films 7 in Examples 1 to 4 has a minimum dimension L2 (see FIGS. 2 and 3) of 40 mm. The contact portion 71 of the films 7 in Examples 5 to 8 has a minimum dimension L2 (see FIG. 4) of 30 mm. The contact portion 71 of the films 7 in Examples 9 to 12 has a minimum dimension L2 (see FIG. 5) of 50 mm. The contact portion 71 of the films 7 in Examples 13 to 16 has a minimum dimension L2 (see FIG. 6) that is the same as the maximum dimension L1, which is 60 mm. The contact portion 71 of the films 7 in Comparative Examples 5 to 8 has a minimum dimension L2 (see FIG. 7) of 30 mm. The thickness of the films 7 in Examples 1 to 16 and Comparative Examples 5 to 8 is as shown in Table 1.

[0048] In Examples 1 to 16 and Comparative Examples 1 to 8, as the paint 8, a polyester paint having a viscosity of 95 seconds (measured by Ford Cup No. 4) was used. The roll gap (the dimension of the gap formed between the applicator roll 3 and the pickup roll 5) and the amount of the paint 8 adhering to the applicator roll 3 in Examples 1 to 16 and Comparative Examples 1 to 8 are as shown in Table 1. Here, the negative value indicating the roll gap indicates the amount of deformation of the applicator roll 3 in a state where the rubber applicator roll 3 is in strong contact with the metal pickup roll 5.

[0049] Using the roll coater 2 of Examples 1 to 16 and Comparative Examples 1 to 8, the object to be coated 9 was painted, and the paint 8 adhering to the applicator roll 3 was visually observed to evaluate the presence or absence of the occurrence of rib-shaped streaks and the occurrence of accumulation (dust pick-up) such as dust 80.

[0050] In Comparative Examples 1 to 4, there was no occurrence of accumulation such as dust 80 in the paint 8 adhering to the applicator roll 3, but there was an occurrence of rib-shaped streaks. In Comparative Examples 5 to 8, there was no occurrence of rib-shaped streaks in the paint 8 adhering to the applicator roll 3, but there was an occurrence of accumulation such as dust 80.

[0051] In Examples 1 to 12, there was no occurrence of rib-shaped streaks in the paint 8 adhering to the applicator roll 3, and there was also no occurrence of accumulation such as dust 80. In Examples 13 to 16, although a slight occurrence of accumulation such as dust 80 was confirmed in the paint 8 adhering to the applicator roll 3, there was no occurrence of accumulation such as dust 80 that would cause problems in painting, and there was also no occurrence of rib-shaped streaks.

[0052] (3) Aspect As is clear from the embodiments and modifications described above, the roll coater (2) of the first aspect has the following configuration. The roll coater (2) includes an applicator roll (3) and a film (7). The applicator roll (3) applies a paint (8) to the object to be coated (9). The film (7) faces the surface of the paint (8) applied to the applicator roll (3). The film (7) has a contact portion (71). The contact portion (71) is an end portion of the film (7) in the rotation direction (D1) of the applicator roll (3). The contact portion (71) contacts the surface of the paint (8) to be applied to the object to be coated (9) among the paint (8) applied to the applicator roll (3). The edge (73) in the rotation direction (D1) of the applicator roll (3) at the contact portion (71) is an edge without a recess. According to this aspect, when the contact portion (71) of the film (7) contacts the surface of the paint (8) applied to the applicator roll (3), the surface of the paint (8) is smoothed. Further, since the edge (73) of the contact portion (71) has no recess, it is difficult for dust (80) or the like to accumulate at the contact portion (71) between the paint (8) adhering to the applicator roll (3) and the contact portion (71). Therefore, coating defects are less likely to occur.

[0053] The roll coater (2) of the second aspect can be realized by a combination with the first aspect. The roll coater (2) of the second aspect has the following configuration. The edge (73) is located in the rotation direction (D1) of the applicator roll (3) at a portion closer to one end in the direction of the rotation axis (30) of the applicator roll (3). According to this aspect, the film (7) can have a simple shape, and the film (7) can be easily manufactured.

[0054] The roll coater (2) of the third aspect can be realized by combination with the first aspect. The roll coater (2) of the third aspect has the following configuration. The edge (73) is located in the rotational direction (D1) of the applicator roll (3) at a portion closer to the middle in the direction of the rotational axis (30) of the applicator roll (3). According to this aspect, the film (7) can be made into a simple shape, and the film (7) can be easily manufactured.

[0055] The roll coater (2) of the fourth aspect can be realized by combination with the first aspect. The roll coater (2) of the fourth aspect has the following configuration. The edge (73) is linear and parallel to the direction of the rotational axis (30) of the applicator roll (3). According to this aspect, the film (7) can be made into a simple shape, and the film (7) can be easily manufactured.

Explanation of Signs

[0056] D1 Rotational direction of the applicator roll D2 Rotational direction of the pick-up roll 2 Roll coater 3 Applicator roll 30 Rotational axis 5 Pick-up roll 7 Film 71 Contact portion 8 Paint 9 Object to be coated

Claims

1. An applicator roll for applying paint to an object to be painted, and a film facing the surface of the paint applied to the applicator roll, wherein the film has a contact portion at an end in the rotational direction of the applicator roll in the film, which contacts the surface of the paint applied to the applicator roll and is applied to the object to be painted, the edge in the rotational direction of the applicator roll at the contact portion is an edge without a recess, in the contact portion, the portion from a position above the rotational axis of the applicator roll to the edge located in the rotational direction from this position and above the rotational axis contacts the surface of the paint applied to the applicator roll and applied to the object to be painted, a roll coater.

2. An applicator roll for applying paint to an object to be painted, and a film facing the surface of the paint applied to the applicator roll, wherein the film has a contact portion at an end in the rotational direction of the applicator roll in the film, which contacts the surface of the paint applied to the applicator roll and is applied to the object to be painted, the edge in the rotational direction of the applicator roll at the contact portion is an edge without a recess, the edge is located more in the rotational direction of the applicator roll in a portion closer to one end in the rotational axis direction of the applicator roll, a roll coater.

3. An applicator roll for applying paint to an object to be painted, and a film facing the surface of the paint applied to the applicator roll, wherein the film has a contact portion at an end in the rotational direction of the applicator roll in the film, which contacts the surface of the paint applied to the applicator roll and is applied to the object to be painted, the edge in the rotational direction of the applicator roll at the contact portion is an edge without a recess, the edge is located more in the rotational direction of the applicator roll in a portion closer to the middle portion in the rotational axis direction of the applicator roll, a roll coater.

4. The edge is linear and parallel to the rotational axis direction of the applicator roll, The roll coater according to Claim 1.

Images