JP2011098283A - Coating apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To apply pattern coating into any shape, using a commercially available coating liquid to form a coating-liquid layer having a thickness within the range of several ten to several hundred micrometers with respect to substrates of various materials. <P>SOLUTION: A coating apparatus C includes a roll 1 provided on the coated surface 4a side of the substrate 4, and a plate roll 2 provided on the back surface 4b side of the coated surface 4a, wherein the substrate 4 and the coating liquid 5 are fed from a gap between the roll 1 and the plate roll 2 while the coating liquid 5 is supplied to the coated surface 4a, and the coating-liquid layer 6 is formed. The peripheral surface of the plate roll 2 is formed with a required rough pattern 2b having projections 2a corresponding to the shape of uncoated regions 6a. Since the coating-liquid layer 6 is not formed at parts corresponding to the projections 2a, the pattern coating is applied into an optional shape. The kind of the coating liquid 5 or the substrate 4 is not limited. The coating-liquid layer 6 has a thickness adjusted by the height or the like of the projection 2a, within the range of several ten to several hundred micrometers. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is, for example, a wallpaper in which a coating liquid such as a pressure-sensitive adhesive containing a polymer solution is coated on the surface of a sheet-like substrate such as release paper, and a coating liquid layer is formed on the surface of the substrate. The present invention relates to a coating apparatus for producing an interior material, a skin patch and the like, and a coating method using the apparatus.

  Conventionally, when a high-viscosity coating liquid such as an adhesive is coated on the surface of a long base material such as release paper with a thickness of several tens to several hundreds of microns, for example, the base material 101 as shown in FIG. The coating apparatus 100 provided with the coater 104 comprised by the roll 102 provided in the coating surface side of this and the roll 103 provided in the back surface side of the coating surface was used.

  In FIG. 6, 106 is a roller for supplying the substrate 101, 107 is a drying device for drying the coating solution while the substrate 101 passes, and 108 is a roller for winding the product on which the coating solution layer is formed. ing. Reference numeral 109 denotes a pump for sending the coating liquid from the tank 110 for storing the coating liquid to the coating liquid supply means 105.

  The coating apparatus 100 simultaneously feeds the base material 101 and the coating liquid from the gap between the roll 102 and the roll 103 while supplying the coating liquid to the coating surface of the base material 101 by the coating liquid supply means 105. A coating liquid layer can be formed by coating the coating surface of the substrate 101 with a required thickness.

  In the conventional coating apparatus 100 as described above, a product in which the coating liquid layer is uniformly and entirely coated on one surface of the substrate can be obtained. However, when manufacturing a skin patch in which a non-woven fabric is coated with a pressure-sensitive adhesive containing a medicinal component, for example, there is a case where it is desired to ensure air permeability without providing a pressure-sensitive adhesive layer at a specific portion.

  As described above, providing an uncoated region having an arbitrary shape partially in the coating liquid layer to impart functionality to the product is also called “pattern coating”. Conventionally, when pattern coating is performed on a sheet-like substrate, for example, the following method has been used.

(1) Method by streak coating Method of creating a streaky uncoated region by partially providing a shielding member such as a partition member on a clearance setting wall or the like that regulates the thickness when coating the coating liquid. (For example, Patent Document 1). Since the partition member has a plurality of divided portions arranged in a position that can be in contact with the surface of the base material in a direction orthogonal to the moving direction of the base material, the coating liquid has an outlet where there is no divided portion. A linear pattern is formed when it passes only through and is applied to the substrate surface.

(2) Method by gravure coating Gravure coating is a method of performing pattern coating on the surface of a substrate based on the technique of gravure printing (for example, Patent Document 2). For example, as shown in FIG. 7, the gravure coating apparatus 200 includes a coating roll 201, an impression roll 202, a doctor blade 203 that is in sliding contact with the peripheral surface of the coating roll 201, and a supply tank that supplies the coating liquid to the coating roll 201. 204. A large number of coating cells 201 a are formed on the peripheral surface of the coating roll 201.

  Then, the coating liquid stored in the supply tank 204 is attached to the peripheral surface of the rotating application roll 201 to supply the coating liquid into the coating cell 201 a, and the blade tip 203 a of the doctor blade 203 is applied to the peripheral surface of the application roll 201. The substrate 205 is introduced between the peripheral surface of the scraped application roll 201 and the impression roll 202 disposed at the opposite position by scraping off excess coating liquid other than the coating cell 201a. Then, coating is performed by transferring the coating liquid in the coating cell 201a onto the surface of the substrate 205.

(3) Method by Screen Printing Screen printing is a method of performing pattern coating using a screen plate (for example, Patent Document 3). For example, a masked portion is provided so that the coating solution is not extruded by a plate film formed by a photochemical method, etc., and a screen plate with a frame around it is used, and paint is placed in the frame of this screen plate. The coating liquid is extruded through the screen from a portion without the plate film by sliding with pressure on the screen with a squeegee, and a desired pattern image is coated on the substrate.

JP 2000-5694 A JP-A-8-25607 Japanese Patent Laid-Open No. 7-251119

  However, the conventional pattern coating methods have the following problems.

(1) First, the method by the streak coating could create an uncoated region only at a position determined in a streak shape. Therefore, in the pattern coating by this method, for example, it is difficult to provide a strip-shaped uncoated region in a direction orthogonal to the feeding direction of the substrate, and there is a problem that the application is limited.

(2) In addition, gravure coating can use only a low-viscosity coating solution that can be supplied to a coating cell, and the maximum coating liquid layer thickness that can be coated is about 20 microns. For this reason, the gravure coating method usually requires several tens to several hundreds of microns, which is usually required to impart a physical function to the coating liquid layer, such as a decorative sheet adhesive or a protective film for abrasion resistance. There was a problem that it could not cope with coating with thickness.

(3) Furthermore, in screen printing, it is possible to coat with a thickness of several tens to several hundreds of microns, but since the solvent of the coating solution is dried and the screen eyes are easily clogged, coating is performed to avoid this. It was necessary to use a specific solvent for the liquid.

  As a specific example, as a solvent for screen printing, for example, a high boiling point solvent having a boiling point of about 200 ° C. or an emulsion using water as a medium is suitable. However, when a high boiling point solvent is used, there is a problem that the base material is limited because it is necessary to use a material having sufficient heat resistance for the base material. In addition, many commercially available adhesives are organic solvent-based, and there are few water-soluble emulsions. Therefore, when using emulsions, specially developed ones are required and the range of choice of coating solution is narrowed. was there.

  The problem to be solved by the present invention is that, in pattern coating using a conventional coating apparatus, a solvent-based coating solution that is generally available on the market can be used for any surface of various substrates. With this pattern, it was difficult to coat the coating liquid layer with a thickness in the range of several tens to several hundreds of microns.

The coating apparatus of the present invention comprises:
Using a commercially available solvent-based coating solution, the coating solution layer is coated with an arbitrary pattern on the surface of a substrate of various materials with a thickness in the range of several tens to several hundreds of microns. To achieve the purpose
A roll provided on the coating surface side of the substrate; and a plate roll provided on the back side of the coating surface; while supplying the coating liquid to the coating surface, the substrate from between the roll and the plate roll And a coating apparatus for sending out the coating liquid and forming a coating liquid layer in which the coating liquid is coated with a required thickness on the coating surface,
In order to provide an uncoated region in which the coating liquid layer does not exist on the coating surface, a required concavo-convex pattern having convex portions corresponding to the shape of the uncoated region is formed on the peripheral surface of the plate roll. Is the most important feature.

  In order to perform pattern coating on the coating surface of the substrate using the coating apparatus of the present invention, the viscosity of the coating solution supplied to the coating surface may be adjusted to a range of 3000 mpa · s to 15000 mpa · s. . This is the coating method of the present invention.

  In the present invention, since the required concavo-convex pattern having a convex portion corresponding to the shape of the uncoated area where the coating liquid layer is not provided is formed on the peripheral surface of the plate roll provided on the back side of the coating surface of the base material. When the substrate and the coating liquid are simultaneously fed out from the gap between the roll and the plate roll, the uneven pattern is pressed from the back side of the coating surface. Therefore, in the present invention, the coating liquid layer is not formed on the portion corresponding to the convex portion of the concavo-convex pattern, so that it can be an uncoated region, so pattern coating of an arbitrary shape is performed on the surface of the substrate. be able to.

  In addition, unlike the gravure coating in which the present invention can use only a low-viscosity coating solution that can be supplied to the coating cell, the coating cell is not used, so that coating with a thickness of several tens to several hundreds of microns is possible. is there. Further, unlike the screen printing in which the coating liquid dries and the screen eyes tend to be clogged, the present invention does not use a screen plate, so the type of the coating liquid and the material of the substrate are not limited.

  Therefore, according to the present invention, the problem that the shape of the pattern coating is limited to a streak, the problem that the thickness of the coating liquid layer is limited to a maximum of about 20 microns, the type of coating liquid, and the material of the substrate Any problem such as being limited can be solved.

It is a schematic side view explaining the structure of the coating apparatus of this invention. It is a figure explaining the relationship between the height of the convex part of a plate, the wet thickness of a coating liquid layer, and dry thickness. It is a figure explaining the means to provide an uneven | corrugated pattern to a plate roll, (a) is the structure which wraps and attaches the flat form plate in which the uneven | corrugated pattern was formed around the surrounding surface of a plate roll, (b) It is a figure which shows the structure which engraves a pattern directly. It is an example of the plate used in the present invention, and is a diagram showing an example in which a concavo-convex pattern is formed with alphabetic characters as convex portions. It is a figure explaining the example which arrange | positions an uncoated area | region in the shape which followed the edge part of the base material for interior materials, (a) is a strip-shaped coating liquid layer, (b) is a hexagonal coating. It is a figure in the case of using an engineering liquid layer. It is the schematic explaining the structure of the conventional coating apparatus. It is the schematic explaining the structure of the conventional gravure coating apparatus.

The present invention is, for example, when pattern coating is performed on a long sheet-like substrate, the problem that the coating pattern is limited to a streak, the problem that the thickness of the coating liquid layer is limited to about 20 microns at the maximum, The purpose of solving problems such as the type of coating liquid and the material of the substrate are limited,
A roll provided on the coating surface side of the substrate; and a plate roll provided on the back side of the coating surface; while supplying the coating liquid to the coating surface, the substrate from between the roll and the plate roll In the coating apparatus that feeds the coating liquid and forms a coating liquid layer in which the coating liquid is coated with a required thickness on the coating surface, a coating liquid layer is not provided on the peripheral surface of the plate roll. This was realized by forming a required concavo-convex pattern having convex portions corresponding to the shape of the coating region.

  In the present invention, the concavo-convex pattern provided on the peripheral surface of the cylindrical roll of the plate roll may be of any shape such as letters, numbers, symbols, geometric patterns, arbitrary figures, etc. It can be appropriately selected according to the purpose and the required function.

  The means for forming the concave / convex pattern on the peripheral surface of the plate roll is not particularly limited. For example, a plate roll in which a required concave / convex shape is directly engraved on the peripheral surface of a cylindrical roll may be used. However, in the case of directly engraving the concavo-convex shape, a dedicated plate roll corresponding to one concavo-convex pattern is formed, and there is a problem that the versatility is lacking. Further, if a plurality of plate rolls are manufactured for each necessary uneven pattern, the cost increases.

  Therefore, in the present invention, it is more preferable to adopt a configuration in which the concave / convex pattern is formed on a flat plate and the plate is wound around and attached to the peripheral surface of the plate roll. In this way, when a plurality of uneven patterns are required, it can be handled simply by exchanging the plate, which is economical. Moreover, when there exists an existing coating apparatus, it can be set as the structure of the coating apparatus of this invention by attaching the said plate | board to the surrounding surface of the roll which applies a pressure from the back surface side of a coating surface.

  In the case where a flat plate is used as a means for forming a concavo-convex pattern on the peripheral surface of the plate roll, the material of the plate can be appropriately selected from metal and resin. The means for winding the plate around the peripheral surface of the plate roll is not particularly limited, and may be fixed by, for example, an adhesive.

  In the present invention, the material of the base material is not particularly limited, but it is more preferable to use a material having a thickness of 10 μm or more. This is because if the thickness is too thin, there is a possibility that problems such as breakage of the base material may occur when the convex portion of the plate roll is pressed from the back side of the base material.

  Of course, such a thin base material that may be damaged may be transferred to a target base material after being once coated on a film having releasability. Moreover, even if it is difficult to coat as it is, such as a cloth or a flat material, pattern coating can be performed by using the above transfer processing method.

  On the other hand, if the thickness of the substrate becomes too thick, the flexibility is lost, and the boundary between the coated region and the uncoated region may become unclear. However, since the upper limit value of the thickness of the base material varies depending on the material, it cannot be uniformly defined, and it is necessary to examine the upper limit value for each material.

  The coating method of the present invention uses the coating apparatus of the present invention configured as described above to supply a coating liquid having a viscosity adjusted to a range of 3000 mpa · s to 15000 mpa · s on the coating surface of the substrate. In this method, pattern coating is performed.

  The reason why the viscosity of the coating liquid is in the above range is that when it is less than 3000 mpa · s, the viscosity of the coating liquid is insufficient and the coating liquid layer may collapse. On the other hand, if it is larger than 15000 mpa · s, the coating liquid may not smoothly enter the gap between the roll and the plate roll.

  Hereinafter, various forms together with the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings. The coating apparatus C of the present invention shown in FIG. 1 has the following configuration, for example.

  3 is a coater, and a roll 1 provided at a position above the coating surface 4a of the substrate 4, and a plate roll 2 provided at a position below the back surface 4b of the coating surface 4a with a predetermined gap from the roll 1. It has. Then, the base material 4 is introduced into the gap between the roll 1 and the plate roll 2 while supplying the coating liquid 5 from the coating liquid supply means to the coating surface 4a, and the base material 4 and the coating liquid 5 are introduced from the gap. At the same time, a coating liquid layer 6 is formed by coating the coating surface 4a with the coating liquid 5 with a required thickness.

  2a corresponds to the shape of the uncoated area 6a on the peripheral surface of the cylindrical roll portion of the plate roll 2 so as to provide an uncoated area 6a where the coating liquid layer 6 does not exist on the coating surface 4a of the base 4 The convex part provided is shown. That is, the concavo-convex pattern 2b having the convex portion 2a corresponding to the shape of the portion 6a that becomes an uncoated region in the pattern coating is formed on the peripheral surface of the plate roll 2. And the base material 4 is arrange | positioned in the state which applied tension on the plate roll 2 provided with the above uneven | corrugated patterns 2b. The arrow X indicates the rotation direction of the roll 1, the arrow Y indicates the rotation direction of the plate roll 2, and the arrow Z indicates the transfer direction of the substrate 4. Moreover, 5a has shown the storage part provided in order to store the coating liquid 5 temporarily, and to supply continuously to the coating surface 4a.

  When the base material 4 is introduced into the gap between the roll 1 and the plate roll 2 while supplying the coating liquid 5 to the coating surface 4a of the base material 4 using the coating apparatus C having the above-described configuration, the convex portion 2a Since the portion provided with is in a state where there is no clearance between the roll 1 and the plate roll 2, the coating liquid layer 6 is not formed, and becomes an uncoated region 6a. On the other hand, the portion of the concave portion 2c not provided with the convex portion 2a is in a state where there is a clearance corresponding to the height of the convex portion 2a between the roll 1 and the plate roll 2, and thus the coating liquid layer 6 is formed. It becomes an area. By carrying out like this, in this invention, a desired pattern coating can be given to the surface of the base material 4. FIG.

  Although not shown in FIG. 1, the coating apparatus C includes a winding roller that supplies the base material 4 on the upstream side in the transport direction of the base material 4, and the base material 4 on the downstream side. There is a drying device that dries the coating liquid layer 6 while it passes, and a roller that winds up the product after the coating liquid layer 6 is formed. Further, the coating apparatus C includes a tank for storing the coating liquid 5, a pump for sending the coating liquid 5 to the storage unit 5a, and the like.

  Further, FIG. 1 schematically shows a state in which the plate roll 2 is viewed from the side surface direction. However, when viewed in plan, the concave / convex pattern 2b includes, for example, letters, numbers, symbols, geometric patterns, and arbitrary figures. The required shape is configured. Thereby, the coating liquid layer 6 is coated on the surface of the substrate 4 in an arbitrary pattern.

  In the embodiment of FIG. 1, as a means for providing the concave / convex pattern 2 b on the plate roll 2, the concave / convex pattern 2 b is formed on the flat plate 2 d, and the plate 2 d is wound around and attached to the peripheral surface of the plate roll 2. Adopted. In such a configuration, if several types of plates 2d having different uneven patterns 2b are prepared, the coating pattern can be changed only by replacing the plate 2d when necessary.

  In the pattern coating by the conventional gravure coating apparatus 200 as shown in FIG. 7, the coating liquid is directly applied to the roll 201 provided with the concave coating cell 201a, but the present invention is as shown in FIG. The feature is that the convex portion 2 a of the plate roll 2 is pressed from the back surface 4 b side of the coating surface 4 a of the substrate 4. Accordingly, in the present invention, since the coating liquid 5 does not directly touch the plate roll 2, the plate roll 2 and the plate 2d attached to the peripheral surface thereof do not need to consider the influence of the coating liquid 5, and are made of various materials. You can choose from.

  In the present invention, the thickness of the coating liquid layer 6 is determined by the height of the convex portion 2a of the plate 2d and the solid content concentration of the coating liquid 5. FIG. 2 is a diagram for explaining the design concept.

  As shown in FIG. 2, the wet thickness W of the coating liquid layer 6 immediately after coating with respect to the height h of the convex portion 2a of the plate 2d varies depending on the components of the coating liquid, but is usually 40 to 70%. The value of the range. Thereafter, the dry thickness D of the coating liquid layer 6 when the solvent component of the coating liquid layer 6 evaporates and disappears through a drying process shrinks smaller than the wet thickness W immediately after coating. At this time, if the solid content concentration of the coating liquid 5 is A%, there is a relationship of D = W × A.

  That is, in the present invention, the final dry thickness D of the coating liquid layer 6 to be coated on the surface of the substrate 4 is determined by the solid content concentration A contained in the coating liquid 5 and the height h of the convex portion 2a of the plate 2d. It is possible to design by adjusting.

  Since the correction of the height of the convex portion 2a involves replacement of the plate 2d, fine adjustment just before coating is difficult. However, it is conceivable to prepare several patterns of the plate 2d in advance and use the most appropriate one. . On the other hand, the solid content concentration A contained in the coating liquid 5 can be finely adjusted relatively easily by adding a solvent or the like to dilute even immediately before coating.

  However, if the dilution amount is increased too much and the solid content concentration A is lowered too much, the viscosity of the coating solution 5 may be lower than the minimum viscosity and coating may be difficult. Therefore, in the coating method of the present invention, the solid content concentration A is adjusted within the range while maintaining the viscosity of the coating liquid 5 in the range of 3000 mpa · s to 15000 mpa · s.

  FIG. 3 is a diagram for explaining an example of means for forming an uneven pattern on the peripheral surface of the plate roll 2. (A) shows the structure which wound the flat plate 2d in which the uneven | corrugated pattern 2b was formed around the surrounding surface 21 of the cylindrical roll part of the plate roll 2, and was fixed with the adhesive agent similarly to the Example of FIG. ing. Reference numeral 22 denotes a position where both ends of the flat plate 2d are in contact with each other. On the other hand, (b) shows the configuration of the plate roll 2 in which the concave / convex pattern 2b is directly engraved on the peripheral surface 21 of the cylindrical roll portion.

  Hereinafter, the Example which pattern-coated the coating liquid layer 6 to the base material 4 using the coating apparatus and method of this invention is demonstrated more concretely. The following examples are examples of the embodiment, and the coating method of the present invention is not limited to these examples.

Example 1
As the coating solution 5, a commercially available acrylic adhesive (SK-1717 manufactured by Soken Chemical Co., Ltd.) was used. The viscosity is 6000 mPa · s, the solid concentration is 40%, and it is diluted with a mixed solvent of ethyl acetate and toluene.

  The base material 4 used release paper (SL-73 made from Sumika processed paper). This release paper is obtained by laminating polyethylene having a thickness of 20 microns on one side of a high-quality paper having a weight of 73 g / m @ 2 and coating a silicone release agent thereon.

  A resin plate 2d having a convex portion 2a having a height of 200 microns was wound around the peripheral surface of the plate roll 2 and attached with an adhesive. As the concavo-convex pattern 2b provided on the surface of the plate 2d, as shown in FIG. 4, a configuration in which character strings “(not shown for violation of public order and morals)” are continuously arranged in the vertical and horizontal directions is used.

  In the plate 2d, each alphabetic character itself was a convex portion 2a, and the background portion was a concave portion 2c. The size of each character was 2 cm × 2 cm, and characters were formed up to 1250 mm for a machine width of 1700 mm. The 1230 mm width release paper used as the substrate 4 was coated on the entire surface in the width direction at a coating speed of 5 m / min.

  When coating was performed under the above conditions, the coating liquid layer 6 (adhesive) was not applied to the coating surface 4a of the base material 4 at the portions corresponding to the letters 2a. In other words, the coating liquid layer 6 (adhesive) was applied only to the background portion other than each alphabetic character. In addition, on the coating liquid layer 6, the characters “(not shown for violation of public order and morals)” were reversed left and right. After drying, when the thickness of the part coated with the coating liquid layer 6 (adhesive) is measured, it is confirmed that the coating is uniformly applied in the range of 45 ± 5 μm and the intended pattern coating is performed. did.

(Example 2)
Coating was performed under the same conditions as in Example 1 except that the height of the convex portion 2a of the plate 2d attached to the plate roll 2 was changed to 500 microns. As in Example 1, the coating liquid layer 6 (adhesive) is not applied to the portions of each alphabetic character corresponding to the convex portion 2a, and the coating liquid layer 6 (adhesive) is applied only to the other portions. In the state where the agent was applied, a pattern having a structure in which characters were transferred in reverse was formed.

  After drying, when the thickness of the part coated with the coating liquid layer 6 (adhesive) is measured, it is confirmed that the coating is uniformly applied in the range of 105 ± 10 μm and the intended pattern coating is performed. did.

(Example 3)
The uneven pattern 2b of the plate 2d was used as the transfer substrate 4 under the same conditions as in Example 1 except that the characters “(not shown for violation of public order and morals)” were changed to the left and right. The release paper was once coated. Then, it bonded together with the nonwoven fabric (Benrise (trademark) made from Asahi Kasei), and the coating liquid layer 6 (adhesive) was transcribe | transferred from the base material 4 side toward the nonwoven fabric. In addition, the characters appearing on the non-woven fabric after the transfer were further reversed to become the usual “(not published for violation of public order and morals)”.

  The non-woven fabric used in the above examples has air permeability and can be used as a base fabric for skin patches. However, a non-woven fabric obtained by uniformly coating a base material 4 with a pressure-sensitive adhesive containing a medicinal component by a conventional method. When transferred onto the nonwoven fabric, the pressure-sensitive adhesive itself does not have air permeability, so the air permeability of the nonwoven fabric is lost.

  In contrast, when the coating liquid layer 6 (adhesive) is formed on the transfer substrate 4 using the coating method of the present invention and then transferred to the nonwoven fabric, the uncoated region (in the case of the above example) Are not coated with an adhesive containing a medicinal component in each alphabetic character part), so that the breathability of the skin can be ensured.

  Thus, in one embodiment to which the coating method of the present invention is applied, the coating apparatus of the present invention is used to form a material such as a non-woven fabric, cloth or film having air permeability or moisture permeability for skin patches, for example. , A method of coating a coating liquid layer composed of a pressure-sensitive adhesive containing a medicinal component, a plaster, etc., and after coating by placing the uncoated area in a portion that ensures the breathability or moisture permeability of the skin, In this coating method, the coating liquid layer is transferred from the substrate side to the material side. This coating method can be applied not only to medical materials such as skin patches, but also to sanitary materials such as sanitary napkins and incontinence pads.

  Moreover, this invention can be utilized also for manufacture of interior materials, such as a wallpaper and a decorative sheet. That is, another embodiment to which the coating method of the present invention is applied is a method of coating a coating liquid layer made of an adhesive on a base material for interior materials such as wallpaper and a decorative sheet using the coating apparatus of the present invention. And it is a coating method characterized by arrange | positioning and coating the said uncoated area | region in the shape continuous with the edge part of the said base material for interior materials.

  When such a coating method is used, when an interior material such as wallpaper or a decorative sheet is bonded to a wall surface or the like, an air passage leading to the end of the base material is secured. This is preferable because it is possible to prevent air from being trapped.

  FIG. 5 shows an example in which the uncoated region 6 a is arranged in a shape continuous with the end 41 of the interior material base material 40. In the example of (a), the strip-shaped coating liquid layer 6 (adhesive) continuously provided in the horizontal direction is shifted in every other row and is also arranged in the vertical direction. Since the region 6a exists and continues to the end portion 41 of the interior material base material 40, this path functions as an air escape path and can prevent air from being caught when the interior material is bonded. .

  Further, in the example of (b), the coating liquid layer 6 (adhesive) is formed in a hexagonal shape and an uncoated region 6a is provided around the coating liquid layer 6 (adhesive). Since the path | route which leads to the edge part 41 of the base material 40 for materials is fully ensured, when the interior material is bonded together, the accumulation of air which arises in the center part can be prevented.

  In addition, about one embodiment (application to a skin patch) using the coating method of the above-mentioned this invention and other embodiment (application to interior material), the coating liquid supplied to the coating surface of a base material It is more desirable that the viscosity of is adjusted in the range of 3000 mpa · s to 15000 mpa · s.

  The present invention is not limited to the above example, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

  For example, in the above-described embodiment, an example is disclosed in which the roll 1 is disposed above and the plate roll 2 is disposed directly below the roll 1, but the positional relationship between the roll 1 and the plate roll 2 is not limited thereto. In the present invention, the roll 1 is provided on the coating surface side of the base material, and the plate roll 2 is provided on the back surface side of the coating surface. However, the positional relationship between the roll 1 and the plate roll 2 may be disposed obliquely, for example. It may be arranged side by side.

  Since the coating apparatus and method of the present invention can perform pattern coating of any shape according to the required function, it can be used in the production of interior materials such as wallpaper and decorative sheets, and of course, medical products such as skin patches and hygiene. It can be used in a wide range of fields, such as in the production of materials.

DESCRIPTION OF SYMBOLS 1 roll 2 plate roll 2a convex part 2b uneven | corrugated pattern 2d plate 4 base material 4a coating surface 4b back surface of coating surface 40 base material for interior materials 41 edge part 5 coating liquid 6 coating liquid layer 6a uncoated area C coating apparatus

Claims (5)

A roll provided on the coating surface side of the substrate; and a plate roll provided on the back side of the coating surface; while supplying the coating liquid to the coating surface, the substrate from between the roll and the plate roll And a coating apparatus for sending out the coating liquid and forming a coating liquid layer in which the coating liquid is coated with a required thickness on the coating surface,
In order to provide an uncoated region in which the coating liquid layer does not exist on the coating surface, a required concavo-convex pattern having convex portions corresponding to the shape of the uncoated region is formed on the peripheral surface of the plate roll. A coating device characterized by.   The coating apparatus according to claim 1, wherein the uneven pattern is formed on a flat plate, and the plate is attached by being wound around a peripheral surface of the plate roll.   A coating method using the coating apparatus according to claim 1 or 2, wherein a coating liquid having a viscosity adjusted to a range of 3000 mpa · s to 15000 mpa · s is supplied to the coating surface of the substrate. A characteristic coating method.   Using the coating apparatus according to claim 1 or 2, a material such as a non-woven fabric, cloth or film having air permeability or moisture permeability is coated with a coating liquid layer made of an adhesive, a plaster or the like. The coating method is characterized in that the uncoated region is disposed in a portion that ensures the breathability or moisture permeability of the skin and coated, and then the coating liquid layer is transferred from the substrate side to the material side. .   A method for coating a coating liquid layer made of an adhesive on a base material for interior materials such as wallpaper and a decorative sheet using the coating apparatus according to claim 1, wherein the uncoated region is the A coating method comprising arranging and coating in a shape continuous with an end of a base material for interior material.

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