JP5989399B2 - Coating equipment - Google Patents

Description

  The present invention relates to a coating apparatus, and more particularly to an apparatus for coating a sheet material by supplying a coating liquid such as a coating agent, ink, or adhesive to a plate cylinder.

  Conventionally, in a coating machine or gravure printing machine, a coating material such as a coating material or ink is attached to a plate surface of a plate cylinder such as a coating roll or a printing plate cylinder, and the coating is performed by pressing the sheet material against the plate surface. Some have a coating device for transferring the working liquid (see Patent Document 1). Such a coating apparatus includes a chamber defining a coating liquid chamber on the side of the plate cylinder. The chamber includes a flexible side seal on both side ends and a seal plate extending between the side seals at the lower end position. Thereby, a seal between the plate cylinder and the chamber is ensured, and liquid leakage from the coating liquid chamber is suppressed. An upper blade called a doctor blade is provided at the upper end position of the chamber so as to bridge both side seals. The doctor blade removes excess coating liquid adhering to the plate surface, and the sheet material is coated with a uniform film thickness.

  Such a chamber-type coating device is less likely to cause coating defects due to less scattering of the coating liquid, and also improves the working environment due to less volatilization of solvent components and solvent odor diffusion of the coating liquid. There is an advantage that can be achieved. On the other hand, there is also a problem that occurs because the side seal is in sliding contact with the smooth surface outside the plate surface. That is, the coating liquid soaked in the sliding contact portion between the side seal and the smooth surface is likely to dry due to the frictional heat of the sliding contact portion, and the solute component (non-volatile component) of the coating solution may solidify. As a result, the sealing performance between the side seal and the smooth surface is lowered, and the coating liquid may leak from that portion. In order to solve such a problem, in the invention described in Patent Document 1, the solvent component of the coating liquid is separately supplied to the sliding contact portion between the side seal and the smooth surface to reduce the friction coefficient of the sliding contact portion. To prevent the solidification of solute components.

JP 2000-168051 A

  However, since the side seal originally suppresses the leakage of the coating liquid, it is necessary to maintain a sliding contact force with the smooth surface to ensure the sealing function. For this reason, it is difficult to reduce the frictional force only by supplying the solvent component. In addition, positively supplying additional solvent components leads to an increase in volatilization and diffusion of solvent odor, leading to a reduction in the advantages of a chamber-type coating apparatus.

  Moreover, the chamber-type coating apparatus described above is provided not only in a coating machine and a gravure printing machine but also in a laminating apparatus for producing a laminated film, for example. In other words, laminating films are widely used in packages such as food packaging, medical and pharmaceutical packaging, and cosmetic packaging. Such laminating films are coated with an adhesive on a base sheet such as a resin film. It is manufactured by bonding aluminum foil or the like. A similar coating apparatus may be used for coating the adhesive. In particular, such an adhesive is likely to cause liquid leakage because of its relatively low viscosity as a coating liquid.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide good sealing performance of a sliding contact portion between a plate cylinder and a seal member in a chamber type coating apparatus.

  In order to solve the above problems, a coating apparatus according to an aspect of the present invention is a coating apparatus that performs coating by supplying a liquid to a plate surface of a rotating plate cylinder, and a liquid chamber on a side of the plate surface. A chamber body, a seal member provided at a side end of the chamber body and in sliding contact with a smooth surface connected to the outer side in the rotation axis direction of the plate surface at the front end surface, and a rotation direction of the plate cylinder in the chamber body A chamber comprising a first blade extending to the front end portion and a second blade extending to the rear end portion in the rotational direction of the plate cylinder in the chamber body, and scraping to scrape off excess coating liquid adhering to the smooth surface A take-up member.

  According to this aspect, sliding friction is generated between the smooth surface of the plate cylinder and the front end surface of the seal member, so that the coating liquid adhering to the sliding contact portion is likely to dry, and the scraping member adheres to the smooth surface. Since the excess coating liquid is scraped off, the solute component is prevented or suppressed from solidifying in the sliding contact portion.

  Another embodiment of the present invention is also a coating apparatus. This apparatus is a coating apparatus that performs coating by supplying a liquid to a plate surface of a rotating plate cylinder, and is a chamber that defines a liquid chamber on the side of the plate surface. A seal member provided at the side end and slidably in contact with the smooth surface connected to the outer side in the rotation axis direction of the plate surface at the front end surface, a first blade extending to the front end portion in the rotation direction of the plate cylinder in the chamber body, And a second blade extending to a rear end portion in the rotational direction of the barrel. The seal member is made of a flexible member, and at least one of the first blade and the second blade has its side end pressed against the inner side in the width direction of the distal end surface of the seal member. The gap between the front end surface and the at least one side end portion and the outside of the chamber are configured to be blocked by the outer portion in the width direction of the front end surface.

  According to this aspect, the side end portion of the first blade is pressed against the inner portion in the width direction of the seal member, and the side end portion of the second blade is pressed against the inner portion in the width direction of the seal member. A direction outer side part comes to function as an outer wall. As a result, side leakage of the coating liquid is prevented or suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the favorable sealing performance of the sliding contact part of a plate cylinder and a sealing member can be provided in a chamber type coating apparatus.

It is a perspective view showing schematic structure of the chamber periphery which comprises the coating device which concerns on 1st Example. It is a figure which shows typically the system configuration | structure of a coating apparatus. It is a figure which shows typically the detail of the seal part in a chamber. It is explanatory drawing which shows the assembly method of a side seal. It is the C section enlarged view of Drawing 4 (A) and (C). It is explanatory drawing which shows a blade unit periphery. It is explanatory drawing which shows the blade unit periphery which concerns on 2nd Example. It is a figure which shows typically the detail of the seal part in the chamber which concerns on 3rd Example.

  A coating apparatus according to an embodiment is configured as a chamber-type coating apparatus that performs coating by supplying a liquid to a plate surface of a rotating plate cylinder. The chamber includes a chamber main body, a seal member, a first blade, and a second blade, and defines a coating liquid chamber on the side of the printing plate. Seal members are provided at both side ends of the chamber body. Smooth surfaces are provided on both outer sides of the plate surface in the plate cylinder, and the front end surface of the seal member is in sliding contact with the plate cylinder when the plate cylinder rotates. The first blade extends in the rotational axis direction of the plate cylinder so as to extend from one seal member to the other seal member at the front end in the rotation direction of the plate cylinder in the chamber body. On the other hand, the second blade extends in the rotational axis direction of the plate cylinder so as to extend from one seal member to the other seal member at the rear end portion in the rotation direction of the plate cylinder in the chamber body. That is, a coating liquid chamber in which the coating liquid is supplied and discharged is formed in a space surrounded by the chamber body, the pair of seal members, the first blade and the second blade, and the side surface of the plate cylinder. In such a configuration, a scraping member is provided for scraping off excess coating liquid adhering to the smooth surface of the plate cylinder. The scraping member has a leading edge directed toward the smooth surface of the plate cylinder, but may be provided outside the chamber.

  The seal member may be made of a flexible member. The side end portion of the first blade is pressed against the inner portion in the width direction of the seal member, and the side end portion of the second blade is pressed against the inner portion in the width direction of the seal member. It may be configured to rise and function as an outer wall. In such a configuration, it is possible to suppress the occurrence of liquid leakage on the outside of the first blade and the second blade, but depending on the viscosity of the coating liquid, it is assumed that the coating liquid oozes out and adheres to the outer portion. Is done. Even in such a case, since the excess coating liquid on the outer portion is scraped off by the scraping member, the coating liquid is solidified even in the portion where the first blade is missing, and the sealing performance is thereby reduced. Can be prevented or suppressed.

  The scraping member may be provided at least in the missing portion of the first blade with respect to the rotational axis direction of the plate cylinder. Further, an elastic pressing mechanism that elastically presses the scraping member against the plate cylinder may be further provided. For example, an urging force may be applied to the scraping member by a spring mechanism. Such a configuration can promote scraping of the coating liquid. In that case, since the frictional force between the scraping member and the plate cylinder increases, the lubricant that supplies the solvent component of the coating liquid as a lubricant between the leading edge of the scraping member and the side surface of the plate cylinder. A supply device is preferably provided. In addition, if solid matter of the coating liquid adheres to the scraping member, it may interfere with the scraping function, so a removal mechanism is provided to remove the solute component of the coating liquid that has adhered to the scraping member. Is preferred.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings.
[First embodiment]
FIG. 1 is a perspective view showing a schematic configuration around a chamber constituting the coating apparatus according to the first embodiment. FIG. 2 is a diagram schematically illustrating a system configuration of the coating apparatus.

  As shown in FIG. 1, the coating apparatus 1 of this embodiment constitutes a part of a laminating apparatus, and an adhesive (glue) as a coating liquid is applied to the base sheet 10 at a stage before forming the laminated film. It is to be applied. That is, the base sheet 10 conveyed from the upstream process is pressed against the plate cylinder 14 by the impression cylinder 12, and the coating liquid uniformly applied to the plate surface 16 of the plate cylinder 14 is transferred to one side surface of the base sheet 10. Is. In order to apply the coating liquid onto the plate surface 16, a chamber 18 that fills the coating liquid is disposed opposite to the side of the plate cylinder 14.

  As shown in FIG. 2, a tank 20 for storing the coating liquid is provided and connected to the chamber 18 via a supply pipe 22 and a return pipe 24. That is, the coating liquid is pumped up from the tank 20 by driving the pump 26 and supplied to the coating liquid chamber 28 in the chamber 18 through the supply pipe 22. Further, the coating liquid in the coating liquid chamber 28 is returned to the tank 20 via the return pipe 24. Thus, when the coating apparatus 1 operates, the coating liquid circulates between the tank 20 and the chamber 18 and is applied to the plate surface 16 of the plate cylinder 14 in the process.

  The chamber 18 includes a chamber body 30, a pair of side seals 32 (corresponding to “seal member”), an upper blade 34 (corresponding to “first blade”), and a lower blade 36 (corresponding to “second blade”). Is provided. The chamber body 30 has a substantially rectangular parallelepiped shape with a C-shaped cross section, and an opening thereof is disposed to face the side surface of the plate cylinder 14. The pair of side seals 32 are provided so as to cover both side ends of the chamber body 30. The side seal 32 is made of a flexible synthetic resin foam material or the like, and has a curved end surface along the side surface of the plate cylinder 14. A smooth surface 17 is connected to the outside of the plate surface 16 of the plate cylinder 14 (see FIG. 1), and the front end surface of the side seal 32 is in sliding contact with the smooth surface 17.

  On the other hand, an upper blade 34 is provided at the upper end of the chamber body 30 and a lower blade 36 is provided at the lower end. The upper blade 34 is made of a rectangular steel plate material or the like, and is provided at the front end portion in the rotation direction of the plate cylinder in the chamber body 30 so that the rotation direction of the plate cylinder 14 is indicated by an arrow in the drawing. The upper blade 34 extends in the rotational axis direction of the plate cylinder 14 so as to extend from one side to the other of the pair of side seals 32, and a leading edge (lower end edge) thereof is in sliding contact with the peripheral surface of the plate cylinder 14. On the other hand, the lower blade 36 is made of a synthetic resin plate having a rectangular shape, and is provided at the rear end portion of the chamber body 30 in the rotation direction of the plate cylinder, and extends from one side of the pair of side seals 32 to the other. It extends in the direction of the rotation axis, and its leading edge (upper edge) is in sliding contact with the peripheral surface of the plate cylinder 14. Each blade is fixed to the chamber body 30 by a blade pressing plate 38.

  FIG. 3 is a diagram schematically showing details of the seal portion in the chamber. 3A shows the structure around the side seal as viewed from the opening side of the chamber, and FIG. 3B is a view in the direction of the arrow A. FIG. 4 is an explanatory view showing a method of assembling the side seal. 4 (A) to 4 (D) show the assembling process, and FIGS. 4 (B) and 4 (D) show cross sections taken along the line BB in FIG. 3 (A). FIG. 5 is an enlarged view of a portion C in FIGS. 4 (A) and 4 (C).

  As shown in FIG. 3A, the side seal 32 is disposed so as to cover the side end opening of the chamber body 30. The side seal 32 is fixed so as to be sandwiched between the chamber main body 30 and the seal pressing plate 40 by fastening the seal pressing plate 40 arranged on the outside to the chamber main body 30 via a bolt (not shown). The The seal pressing plate 40 is obtained by processing a steel plate so as to follow the shape of the side seal 32. The side ends of the pair of blade pressing plates 38 reach the outer ends of the side seals 32, respectively, and the side seals 32 are prevented from coming off to the plate cylinder 14 side.

  The upper blade 34 is configured such that a side end portion thereof overlaps with a front end surface of the side seal 32, but a side end edge thereof is positioned between the inner end and the outer end of the side seal 32. Specifically, the overlap length L is set to about ½ of the width W of the side seal 32. As shown in FIG. 3B, the upper edge 34 is substantially flush with the outer portion of the side seal 32 by pressing the side end portion against the upper surface of the side seal 32. Similarly, the lower blade 36 is configured such that the side end portion thereof is positioned between the inner end and the outer end of the side seal 32. The side edge of the lower blade 36 is pressed against the upper surface of the side seal 32 and is substantially flush with the outer portion of the side seal 32.

  That is, when positioning the side seal 32, the side seal 32 is abutted so as to cover the side end of the chamber body 30 as shown in FIG. At this time, as shown in FIG. 4B, the lower surfaces of the upper blade 34 and the lower blade 36 and the upper surface of the side seal 32 abut. In this state, the side seal 32 is slightly displaced toward the plate cylinder 14, that is, the upper blade 34 and the lower blade 36, so that the front end surface of the side seal 32 is moved to the plate cylinder 14 as shown in FIG. The smooth surface 17 can be slidably contacted.

  At this time, as shown in FIG. 4D, the upper blade 34 and the lower blade 36 are pressed against the inner side portion 32 a of the side seal 32 in the width direction, and are slightly indented with respect to the side seal 32. As a result, the width direction outer side portion 32b of the side seal 32 becomes an outer wall, and even if the coating liquid is likely to flow out from the coating liquid chamber 28, it is blocked and functions as a seal (see thick arrows in the figure). ).

  That is, as shown in FIG. 5 (A), for example, if the upper blade 34 is merely abutted against the upper surface of the side seal 32, the upper surface 34 is interposed between the smooth surface 17 of the plate cylinder 14 and the side seal 32. A gap CL1 is formed. Further, as shown in FIG. 5B, even if the curved surface portion of the side seal 32 is shortened and brought into contact with the smooth surface 17, the gap between the smooth surface 17 and the side seal 32 is interposed by the upper blade 34. CL2 is formed. When such a gap is formed, the coating liquid leaks outside through the gap. The same applies to the lower blade 36.

  In this respect, in this embodiment, as shown in FIG. 5C, the side end portion of the upper blade 34 is recessed into the side seal 32, and the tip end surface of the side seal 32 and the tip edge of the upper blade 34 are formed. The surface is in sliding contact with the smooth surface 17. The same applies to the lower blade 36. As a result, no gap is formed at the side end of the chamber 18, and leakage of the coating liquid can be prevented.

  Returning to FIG. 2, the opening of the chamber body 30 is thus surrounded by the pair of side seals 32, the upper blade 34 and the lower blade 36, and the respective front end portions are brought into sliding contact with the peripheral surface of the plate cylinder 14. A coating liquid chamber 28 closed to the outside is formed. The coating liquid introduced into the coating liquid chamber 28 is supplied to and adhered to the plate surface 16 of the rotating plate cylinder 14. The side seal 32 and the lower blade 36 seal so that the coating liquid in the coating liquid chamber 28 does not leak outside. The upper blade 34 scrapes off excess coating solution from the plate cylinder 14 and maintains a uniform application state of the coating solution on the plate surface 16.

  By the way, although it can suppress that a liquid leak arises on the outer side of the chamber 18 by the above structures, the solute component of a coating liquid solidifies in a sliding contact part with the frictional heat of the side seal 32 and the plate cylinder 14. FIG. If this happens, the sealing performance of the side seal 32 may be reduced. Therefore, in this embodiment, a scraping device 50 is provided on the opposite side to the chamber 18 of the plate cylinder 14.

  The scraping device 50 includes a blade unit 52 and a lubricant supply device 54. The blade unit 52 includes a cleaning blade 56 (corresponding to a “scraping member”) whose leading edge is directed to the smooth surface 17 of the plate cylinder 14, and a spring mechanism 58 (“ Corresponding to the “elastic pressing mechanism”), and a removal mechanism 60 for removing the solute component of the coating liquid adhering to the cleaning blade 56.

  The lubricant supply device 54 includes a tank 62 that stores a solvent component of the coating liquid as a lubricant, a supply pipe 64 that extends from the tank 62 to the cleaning blade 56, and a pressure feeding device that sends the lubricant in the tank 62 to the supply pipe 64. 66. A nozzle facing the cleaning blade 56 is provided at the tip of the supply pipe 64. However, in this embodiment, the influence on the working environment due to the volatilization of the solvent component is minimized as much as possible by dropping the lubricant to the cleaning blade 56 little by little.

  FIG. 6 is an explanatory view showing the periphery of the blade unit, and corresponds to a view in the direction of arrow D in FIG. The cleaning blade 56 is provided at least in the missing portion of the upper blade 34 with respect to the rotational axis direction of the plate cylinder 14. Specifically, as shown in the drawing, the cleaning blade 56 has a slightly larger width than the smooth surface 17 so that the leading edge thereof can abut at least the entire smooth surface 17 of the plate cylinder 14. The cleaning blade 56 is pressed against the smooth surface 17 to scrape off excess coating liquid adhering to the smooth surface 17. At that time, an appropriate amount of coating liquid is dropped from the nozzle of the supply pipe 64 so as to suppress frictional heat. Thereby, it can prevent that the solid substance of a solute component adheres to the smooth surface 17, and can prevent the sealing performance of the side seal 32 from deteriorating.

  Returning to FIG. 2, the cleaning blade 56 is appropriately pressed against the plate cylinder 14 by the spring mechanism 58, thereby scraping off excess coating liquid at the leading edge. At this time, the removal mechanism 60 is operated so that the solute component of the coating liquid scraped off does not stay on the blade edge and solidify. In this embodiment, a claw member extending from the main body of the blade unit 52 as the removing mechanism 60 extends to the vicinity of the tip of the cleaning blade 56. When the worker pulls the cleaning blade 56 forward (left side in the figure) at an appropriate timing, the cleaning blade 56 slides forward. As a result, the solute component can be removed in such a manner that the coating liquid adhered to the upper end surface of the cleaning blade 56 is scraped off from the tip of the removal mechanism 60.

  As described above, in the coating apparatus 1 of the present embodiment, as shown in FIG. 3, the side end portions of the upper blade 34 and the lower blade 36 are pressed against the inner side in the width direction of the side seal 32. As a result, the widthwise outer side portion of the side seal 32 functions as an outer wall, and side leakage of the coating liquid is prevented or suppressed. Further, since sliding friction is generated between the smooth surface 17 of the plate cylinder 14 and the front end surface of the side seal 32, the coating liquid adhering to the sliding contact portion is easily dried. Since the extra coating liquid that has adhered is scraped off, the solidification of the solute component at the sliding contact portion is prevented or suppressed.

[Second Embodiment]
The coating apparatus according to this embodiment is substantially the same as the first embodiment except that the configuration of the cleaning blade is different. For this reason, the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted. FIG. 7 is an explanatory view showing the periphery of the blade unit according to the second embodiment, and corresponds to FIG. FIG. 7A shows the configuration of the cleaning blade according to the second embodiment, and FIG. 7B shows a modification thereof.

  As shown in FIG. 7A, in this embodiment, the leading edge of the cleaning blade 256 abuts the missing portion of the upper blade 34 on the smooth surface 17 but has a width that does not reach the inner end of the smooth surface 17. Have. That is, the cleaning blade 256 is configured not to contact the entire width of the smooth surface 17. A portion that is in sliding contact with the side seal 32 on the smooth surface 17 and has a minimum configuration based on the idea that the cleaning blade 256 compensates for a range in which the coating liquid cannot be scraped off by the upper blade 34. is there.

  In the modified example, conversely, as shown in FIG. 7B, the cleaning blade 258 may be provided so as to extend over the entire width of the plate cylinder 14. In that case, the entire leading edge of the cleaning blade 258 may be slidably contacted with the peripheral surface of the plate cylinder 14, but the portion corresponding to FIG. 6 or FIG. You may adjust the shape of a blade edge so that a corresponding location may be slidably contacted. Since the solidification of the coating liquid is considered to occur easily on the smooth surface 17 having a large frictional force, the portion scraped off by the cleaning blade may be limited.

[Third embodiment]
The coating apparatus according to the present embodiment is substantially the same as the first and second embodiments except that the blade unit 52 is provided in the chamber. For this reason, the same components as those in the first and second embodiments are denoted by the same reference numerals and the description thereof is omitted. FIG. 8 is a diagram schematically illustrating details of the seal portion in the chamber according to the third embodiment. 8A shows the structure around the side seal as viewed from the opening side of the chamber, and FIG. 8B is a view in the direction of the arrow A.

  In this embodiment, the blade unit 52 is provided in the chamber 318. Specifically, as shown in FIG. 8 (A), a concave portion 330 that is notched outward is provided at an intermediate portion between the upper blade 34 and the lower blade 36 in the side seal 332. On the other hand, a slit 341 is provided at a portion of the pressing plate 340 facing the concave portion 330, and a convex portion 342 that fits with the concave portion 330 is provided at a lower end portion thereof. The blade unit 52 is provided so as to be accommodated in the slit 341.

  As shown in FIG. 8B, the cleaning blade 56 is arranged so that the leading edge of the cleaning blade 56 is pressed against the smooth surface 17 of the plate cylinder 14. Also in this embodiment, the spring mechanism 58 applies an appropriate biasing force to the cleaning blade 56. As shown in FIG. 8A, the cleaning blade 56 is located on the outer portion of the side seal 332, and its inner end position is on the inner side of the side end positions of the upper blade 34 and the lower blade 36 (on the chamber body 30 side). (L1 <L). On the other hand, the width of the leading edge of the cleaning blade 56 is set to be larger than the lengths of the outer portions of the upper blade 34 and the lower blade 36 in the side seal 332 (W1> W−L).

  With such a configuration, it is possible to scrape the area where the coating liquid cannot be scraped off by the upper blade 34 with the cleaning blade 56, which is the sliding contact portion of the smooth surface 17 with the side seal 332. . On the other hand, the blade unit 52 is disposed outside the side seal 332 so that the sealing performance of the side seal 332 is not hindered.

  In the above, this invention was demonstrated based on the Example. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are within the scope of the present invention. is there.

  In the above-described embodiment, as shown in FIGS. 6 and 7, the example in which the widths of the cleaning blades 56 and 256 are set so that the leading edge thereof can contact the outer end of the smooth surface 17 has been shown. In the modification, the width of the cleaning blade may extend to the outer end of the side seal even if the leading edge of the cleaning blade does not reach the outer end of the smooth surface 17.

  In the above-described embodiment, as shown in FIG. 2, one example of arrangement in which the cleaning blade 56 is arranged outside the chamber 18 is shown, but it may be arranged at a position different from this. For example, it may be disposed between the upper blade 34 and the impression cylinder 12 or may be disposed in the vicinity of the lower blade 36.

  In the above-described embodiment, the spring mechanism 58 that urges the cleaning blade 56 toward the smooth surface 17 is exemplified as the elastic pressing mechanism. However, for example, a configuration in which the cleaning blade 56 is pressed against the smooth surface 17 by pneumatic driving is adopted. May be.

  In the above-described embodiment, a claw member fixed in position as the removing mechanism 60 is provided, and the operator slides the cleaning blade 56 toward the front side so that the solute component of the coating liquid adhered to the cleaning blade 56 by the claw member. The configuration to remove the was shown. In the modified example, the claw member may be configured to be slidable, and the solute component attached to the cleaning blade 56 may be removed by the operator sliding the claw member. Further, instead of manually sliding the cleaning blade 56 and the claw member, a drive unit that automatically slides them may be provided, and the drive unit may be operated at a predetermined timing.

  Although not described in the above embodiment, the upper blade 34 does not necessarily have a blade shape, and the excess coating solution is scraped off from the plate cylinder 14 to uniformly apply the coating solution on the plate surface 16. Any shape can be adopted as long as the above can be maintained. Further, the lower blade 36 need not have a blade shape as long as it defines the coating liquid chamber 28 and can seal the coating liquid in the coating liquid chamber 28 so as not to leak to the outside. Any shape can be employed. Further, the cleaning blade 56 need not be blade-shaped as long as it can scrape off excess coating liquid adhering to the smooth surface 17, and any shape can be adopted.

  In the said Example, although the example which applies a coating apparatus to a lamination apparatus was shown, it can also apply to other apparatuses, such as a coating machine and a gravure printing machine.

  DESCRIPTION OF SYMBOLS 1 Coating apparatus, 10 Base sheet, 12 Impression cylinder, 14 Plate cylinder, 16 Plate surface, 17 Smooth surface, 18 Chamber, 20 Tank, 28 Coating liquid chamber, 30 Chamber main body, 32 Side seal, 34 Top blade, 36 Lower blade, 50 scraping device, 52 blade unit, 54 lubricant supply device, 56 cleaning blade, 58 spring mechanism, 60 removal mechanism, 62 tank, 232 side seal, 256,258 cleaning blade, 318 chamber, 332 side seal.

Claims (6)

A coating apparatus that performs coating by supplying liquid to the plate surface of a rotating plate cylinder,
A chamber that defines a liquid chamber on the side of the plate surface, the seal member that is provided on the side end of the chamber body and that is in sliding contact with the smooth surface connected to the outer side in the rotation axis direction of the plate surface at the front end surface A chamber comprising: a first blade extending in a rotational direction front end portion of the plate cylinder in the chamber body; and a second blade extending in a rotational direction rear end portion of the plate cylinder in the chamber body;
A scraping member that scrapes off excess coating liquid adhering to the smooth surface;
A lubricant supply device that supplies a solvent component of the coating liquid as a lubricant between the tip edge of the scraping member and the side surface of the plate cylinder ,
The coating apparatus, wherein the scraping member is disposed outside the chamber . The seal member is made of a flexible member,
A side end portion of the first blade is pressed against a width direction inner side portion of a tip end surface of the seal member;
The seal member is configured so that a gap between a front end surface of the first blade and a side end portion of the first blade and the outside of the chamber are blocked by a width direction outer side portion of the front end surface. The coating apparatus according to claim 1.   The coating apparatus according to claim 1, wherein the scraping member is provided at least in a missing portion of the first blade with respect to a rotation axis direction of the plate cylinder.   The coating apparatus according to claim 1, further comprising an elastic pressing mechanism that elastically presses the scraping member against the plate cylinder. Coating apparatus according to any one of claims 1 to 4, further comprising a removal mechanism for removing a solute component of the coating liquid adhering to the scraping member. A coating apparatus that performs coating by supplying liquid to the plate surface of a rotating plate cylinder,
A chamber that defines a liquid chamber on the side of the plate surface, the seal member that is provided on the side end of the chamber body and that is in sliding contact with the smooth surface connected to the outer side in the rotation axis direction of the plate surface at the front end surface A chamber including a first blade extending in a rotation direction front end portion of the plate cylinder in the chamber body, and a second blade extending in a rotation direction rear end portion of the plate cylinder in the chamber body. ,
Before SL At least one of the first blade and said second blade is pressed against the width direction inside portion of the distal end surface of the side end portion is the seal member,
The sealing member is
It consists of a member having flexibility, and the inner side in the width direction of the tip surface is recessed by pressing at least one of the first blade and the second blade,
Coating, wherein the gap between the side edge portion of the front end surface and the at least one blade, the connection to the outside of the chamber, that the widthwise outer portion of the distal end surface is configured to block apparatus.

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