JP5162798B2 - Waterproofing method for decorative board - Google Patents

Description

  The present invention relates to a method for waterproofing a decorative board, and more particularly, to a method for waterproofing a wooden surface of a permeable base material of a decorative board.

  Conventionally, for example, as shown in Patent Document 1, a decorative sheet is provided on the surface of a base material composed of Lauan plywood, softwood plywood, wood fiber board or early-wood plywood, and water-resistant paper or water-resistant resin is provided on the back surface of the base material. There are known floor decorative materials in which a backing sheet is attached, and a water-resistant resin layer is formed on a side surface of a substrate not covered with each sheet.

  By the way, in forming the water-resistant resin layer of Patent Document 1, in order to apply or spray a conventional water-resistant resin, generally, an application device such as a spray or a sponge roll coater is used. However, according to these coating apparatuses, there is a problem that the water-resistant resin scatters around the portion to be coated and adheres to the surface of the decorative sheet to contaminate it. In that case, if it is a resin-made decorative sheet like patent document 1, it is also possible to remove the resin which contaminated the surface by wiping off, but especially when using a veneer decorative sheet, water-resistant resin Is difficult to completely remove, and causes uneven paint on the veneer decorative sheet surface.

  On the other hand, as shown in Patent Document 2, a coating apparatus using a nozzle for a very small curtain coater has been developed. This coating device discharges the coating liquid from the liquid discharge nozzle hole of the nozzle so as to form a bamboo leaf-shaped liquid film, and air from the nozzle from both sides against the thick part generated on both sides of the liquid film. By spraying the flow and pinching it, the thickness of the liquid film is made uniform by thinning the thick part, and at the same time, the small liquid droplets scattered along with the discharge of the liquid film, the air flow on both sides of the liquid film and those In this way, the air is confined during the air flow that falls together, and is coated while blocking the scattering of the liquid film to the outside of both side edges.

With this coating device, a uniform liquid thickness and a clear liquid film at the borders of both side edges can be obtained on the surface of the object to be coated, so that waterproof treatment is performed without splashing water-resistant resin around the periphery. be able to.
JP 2006-97321 A JP-A-6-178959

  However, when using the coating apparatus of this patent document 2, even if the scattering of the resin to be applied can be prevented, the contamination attached to the surface of the decorative sheet cannot be reliably solved. That is, in order to improve the water resistance of the base material, it is important to form a waterproof treatment layer on the entire surface without a defect, but in order to form the waterproof treatment layer in this way, usually a water resistant resin or the like is used. The waterproofing agent is applied to a range larger than the portion not covered with the decorative sheet, that is, it is applied so as to cover the decorative sheet. In that case, it is unavoidable that dirt adheres to the decorative sheet, and operations such as wiping off the dirt later occur.

  This invention is made | formed in view of such a point, The objective invites adhesion of the waterproofing agent to the decorative sheet etc. of the base-material surface by improving the coating method with respect to the base material of a waterproofing agent. In other words, a waterproof layer can be formed on the entire surface of the substrate without any defects.

  In order to achieve the above object, the present invention focuses on the fact that the waterproofing agent penetrates and spreads in the permeable base material, and the application range is specified as a range slightly away from the decorative sheet on the surface. Then, the waterproofing agent applied to the coating range was permeated into the non-coated area, so that the waterproofed layer was formed on the base material without any defects.

  Specifically, in the invention of claim 1, the permeable base material and a surface decorative layer laminated on the surface of the permeable base material are provided, and the top end surface of the permeable base material is not waterproofed. A method for waterproofing a decorative board having an exposed portion is an object. And, in the exposed portion, the surface side non-extensive range from the boundary end portion of the permeable base material to the surface decorative layer to a position separated from the boundary end portion by a distance capable of penetrating the permeable waterproofing agent. Applying a permeable waterproofing agent to the application part in the range where the application part is left, and allowing the waterproofing agent to permeate the application part of the exposed part or the surface-side non-applied part, so that the entire surface layer of the exposed part is It forms in the waterproofing treatment layer which consists of a permeable layer of a permeable waterproofing agent.

  On the other hand, the invention of claim 2 includes a permeable base material and a surface decorative layer laminated on the surface of the permeable base material with a moisture-proof layer interposed therebetween, and is waterproofed on the top surface of the permeable base material. A method for waterproofing a decorative board having no exposed portion is an object. And, in the exposed portion, the surface side non-coating in a range from the boundary end portion with the moisture-proof layer of the permeable base material to a position separated from the boundary end portion by a distance capable of penetrating the permeable waterproofing agent. By applying a permeable waterproofing agent to the application part in the range where the part remains, and infiltrating the waterproofing agent into the coating part of the exposed part or the non-coated part on the surface side, the entire surface layer of the exposed part is penetrated. It forms in the waterproofing treatment layer which consists of a permeable layer of a waterproofing agent.

  In the inventions according to the first and second aspects, the permeable waterproofing agent can permeate into the boundary end portion from the boundary end portion with the surface decorative layer or the moisture-proof layer in the exposed portion of the ostium surface of the permeable base material. A range up to a position separated by a certain distance is defined as a surface-side non-applied portion, and a permeable waterproofing agent is applied to an applied portion in a range where the surface-side non-applied portion is left. Since the base material is permeable, the applied waterproofing agent penetrates the base material over the application part or the surface-side non-application part. As a result, the entire surface layer of the exposed portion is formed as a waterproof treatment layer composed of a permeation layer into which the waterproof treatment agent has permeated not only the application portion but also the surface-side non-application portion. Therefore, the waterproof treatment layer on the end of the face can be formed on the decorative board in which the surface decorative layer is laminated directly or via the moisture-proof layer on the base material, without fouling the surface decorative layer.

  In invention of Claim 3, the back surface moisture-proof layer is provided in the back surface of the said permeable base material. In addition, the application part is a part of the exposed part from the boundary end part with the back moisture-proof layer of the permeable base material to a position away from the boundary end part by a distance that allows penetration of the permeable waterproofing agent. It is the range which left the back surface side non-application part of the range of. Then, by applying a permeable waterproofing agent to the application part and allowing the waterproofing agent to penetrate into the application part or the back side non-application part, the entire surface layer of the exposed part is penetrated into the permeable waterproofing agent. It forms in the waterproof process layer which consists of.

  In this invention of Claim 3, the permeable waterproofing agent can permeate into the boundary end portion from the boundary end portion of the permeable substrate with the moisture barrier layer on the back surface of the permeable substrate. The permeable waterproofing agent is applied to the application portion in the range where the back side non-application portion in the range up to a position separated by a certain distance is left. The applied waterproofing agent penetrates the base material over the application part or the back side non-application part, so that the entire surface layer of the exposed part is not only the application part but also the back side non-application part. It forms in the waterproofing layer which consists of a osmosis | permeation layer which osmose | permeated. Therefore, the waterproof treatment layer on the front end can be formed on the decorative board in which the back surface moisture proof layer is laminated on the base material without fouling the back surface moisture proof layer.

  In the invention of claim 4, the chamfered portion and the male and female real portions are provided on the face of the decorative plate so as to include the exposed portion of the permeable base material, and the permeation in which the chamfered portion and the male and female real portions are provided. The waterproof treatment agent is applied to the application portion of the conductive substrate.

  In the invention of claim 4, even if the chamfered portion and the male and female real portions are provided on the face of the decorative plate so as to include the exposed portion of the base material, a permeable waterproofing agent is applied to the applied portion. The waterproofing layer can be formed without a defect portion on the tip of the permeable base material of the decorative board having the chamfered portion and the male and female real portions.

  The invention according to claim 5 is characterized in that the coating apparatus for applying the waterproofing agent is a non-contact type striped film coating apparatus using an extremely small width curtain coater.

  In this invention of claim 5, by using a non-contact type striped film coating apparatus with a very small curtain coater, there is no splashing of the waterproofing agent, and the waterproofing agent is formed by a clear liquid film at the boundary line on both sides. Since it is applied, the permeable waterproofing agent can be applied with the non-applied part reliably left on the exposed part of the permeable substrate, that is, the applied part can be accurately partitioned from the non-applied part. The layer can be formed stably and accurately.

  The invention according to claim 6 is characterized in that the width of the non-application portion is 0.5 mm to 1.0 mm. In the invention of claim 6, the waterproof treatment agent applied to the application part is surely permeated to the non-application part, and the optimum width of the non-application part can be obtained so that the action of the invention is effectively exhibited. .

  As described above, in the first aspect of the present invention, when a decorative sheet having an exposed portion on which the surface decorative layer is laminated on the surface of the permeable base material and the waterproof surface of the base material is not waterproofed is waterproofed. In addition, a surface-side non-applied portion in a range from the boundary end portion of the base material to the surface decorative layer of the base material to a position separated from the boundary end portion by a distance that allows penetration of the permeable waterproofing agent. Apply the permeable waterproofing agent to the remaining area of the coating, and permeate the waterproofing agent into the exposed part of the exposed part or the non-coated part of the surface. It formed in the waterproof process layer which consists of an osmosis | permeation layer. Further, in the invention of claim 2, a surface decorative layer is laminated on the surface of the permeable base material via a moisture-proof layer, and a decorative board having an exposed portion not waterproofed on the base of the base material is waterproofed. In this case, the surface-side non-applied portion in the range from the boundary end portion of the exposed portion to the moisture-proof layer of the base material to a position separated from the boundary end portion by a distance that allows penetration of the permeable waterproofing agent. Apply the permeable waterproofing agent to the remaining area of the coating, and infiltrate the entire surface layer of the exposed part by penetrating the waterproofing agent into the exposed part or the non-coated part on the surface side. It formed in the waterproof process layer which consists of a layer. Therefore, according to these inventions, the decorative layer in which the surface decorative layer is laminated directly or via the moisture-proof layer on the base material is provided with a deficient portion of the waterproofing layer by the waterproofing agent on the end of the face without soiling the surface decorative layer. It can be formed without.

  According to invention of Claim 3, from the boundary edge part with the back surface moisture-proof layer of a permeable base material among the exposed parts of the permeable base material mouth surface in which the back surface moisture-proof layer is provided in the back surface, this boundary edge part and Apply the permeable waterproofing agent to the application area in the area where the backside non-applied part is left in the range up to the position where the permeable waterproofing agent can penetrate, and apply the waterproofing agent to the application part or backside. By penetrating the side non-applied portion, the entire surface layer of the exposed portion was formed into a waterproof treatment layer composed of a penetration layer of a waterproof treatment agent. It is possible to form the waterproofing layer on the front end without any defects without contaminating the back moisture-proof layer.

  According to invention of Claim 4, a waterproofing agent is apply | coated to the application | coating part of the permeable base material provided so that the chamfered part and the male and female real part may include the exposed part of a permeable base material in the wooden face of a decorative board. Thereby, a waterproof treatment layer can be formed in a base material mouth surface of a decorative board having a chamfered part and a male and female real part without a defective part.

  In the invention of claim 5, the coating device for applying the waterproofing agent is a non-contact type striped film coating device using a very small width curtain coater, so that the permeable waterproofing agent is not applied to the application part. It can be partitioned and applied accurately, and the waterproof layer can be formed stably and accurately.

  According to the invention of claim 6, the non-application part having the optimum width can be obtained by setting the width of the non-application part to 0.5 mm to 1.0 mm.

  Hereinafter, the best embodiment of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

[Embodiment 1]
6 to 9 show examples of decorative plates A1 to A4 to be waterproofed by the method according to the embodiment of the present invention. A decorative board A1 shown in FIG. 6 includes a permeable base material 1 and a surface decorative layer 2 laminated and integrated on the surface thereof. A decorative board A2 shown in FIG. 7 includes a permeable base material 1 and a surface decorative layer 2 laminated and integrated on the surface thereof with a moisture-proof layer 4 interposed therebetween. A decorative board A3 shown in FIG. 8 includes a permeable base material 1, a surface decorative layer 2 laminated on the surface thereof, and a back moisture-proof layer 5 provided on the back surface of the base material 1. Further, the decorative board A4 shown in FIG. 9 includes a permeable base material 1, a surface decorative layer 2 laminated on the surface of the permeable base material 1 with a moisture-proof layer 4, and a back surface moisture-proof layer provided on the back surface of the permeable base material 1. It consists of five.

  Any of the decorative plates A1 to A4 also has an exposed portion 8 that is not waterproofed on, for example, the four-sided end of the permeable base material 1. The permeable substrate 1 and the surface decorative layer 2 are the same in any of the decorative plates A1 to A4, and the same applies to the moisture-proof layer 4 and the back-surface moisture-proof layer 5.

(Penetration substrate)
As the permeable base material 1, a plate-like material that does not hinder the penetration of the permeable waterproofing agent 15 is used. In particular, since penetration in the thickness direction is essential, a fibrous material molded plate (hereinafter also referred to as a fiber plate) obtained by molding a fibrous material such as an inorganic fiber plate or a wooden fiber plate with a binder is used. For example, in the case of plywood, it is not preferable because the permeability in the thickness direction is not so high, so at least the non-applied part and the non-applied part of the applied part are used as a material constituting the vicinity of the plywood, It is recommended to use a composite substrate of fiberboard.

  The fiberboard includes “U type” using urea melamine resin as a binder, “M type” using melamine resin as a binder, and “P type” using phenolic resin as a binder. In addition, a fiberboard using an isocyanate resin or a polyol resin is used. In order to realize excellent “morphological stability”, it is preferable to use a binder other than “U type” as the binder.

  For example, the inorganic fiber board preferably has a specific gravity of about 0.4 to 1.2, and a rock wool board, a volcanic glassy multilayer board, or the like is used. The specific gravity of the inorganic fiber board is selected in consideration of scratch resistance, load resistance, resin permeability, and the like. Specifically, an inorganic fiber board having a specific gravity of 0.4 to 1.2 is selected. When the specific gravity is less than 0.4, the decorative board A is inferior in scratch resistance and load resistance. On the other hand, when the specific gravity is greater than 1.2, the resin permeability is deteriorated and the penetration of the permeable waterproofing agent 15 is reduced. This is not preferable.

  For example, a wood fiber board having a specific gravity of about 0.4 to 1.0 is preferable, and a general medium wood fiber board (hereinafter referred to as MDF) or a hard wood fiber board (hereinafter referred to as hard board) is used. Is done. There are those using hardwood wood fibers and coniferous wood fibers, and these wood fibers and a binder can be used in any combination. The specific gravity of the wood fiber board is selected in consideration of scratch resistance, load resistance, swelling due to moisture, and the like. Specifically, a wood fiber board having a specific gravity of 0.4 to 1.0 is selected. When the specific gravity is less than 0.4, the decorative sheet is inferior in scratch resistance and load resistance. On the other hand, when the specific gravity is greater than 1.0, swelling due to moisture increases.

(Surface makeup layer)
There are no particular restrictions on the material and thickness of the surface decorative layer 2. Accordingly, for example, decorative paper, makeup-impregnated paper, woody decorative thin veneer, decorative resin sheet, etc. having a thickness of about 0.05 mm to 1.0 mm are used. However, when using non-moisture-proof sheet materials such as decorative paper, makeup-impregnated paper, and wood veneer thin veneer, a transparent coating layer made of urethane paint or acrylic paint is provided on the surface to provide waterproofness. Is preferred.

  Preferably, acrylic paper is applied to the surface of decorative paper having a thickness of about 0.05 to 0.2 mm, decorative impregnated paper of about 0.1 to 0.2 mm, and a thin wood veneer of about 0.2 to 0.6 mm. A waterproof resin coating sheet provided with a waterproof transparent coating film layer of a UV curable paint or a decorative resin sheet having a waterproof property of about 0.15 to 0.6 mm is used.

(Moisture-proof layer or back-side moisture-proof layer)
Further, as shown in FIGS. 7 and 9, a single moisture-proof layer 4 may be provided at the interface between the surface decorative layer 2 and the permeable substrate 1. In particular, when a thin veneer, decorative paper, or makeup-impregnated paper is used as the surface decorative layer 2, the permeable waterproofing agent 15 that has penetrated the permeable base material 1 soaks up to the surface decorative layer 2 as will be described later. There is a possibility of coming. In this case, by providing one layer of the moisture-proof layer 4, it is possible to prevent bleeding. Further, the moisture-proof treatment on the surface side can be reliably performed.

  As the moisture-proof layer 4, a resin sheet or a metal sheet coated with an adhesive sealer on the front and back, or a poly sand paper or an aluminum sand paper in which the front and back of an ultrathin resin sheet or metal sheet are laminated and integrated with a paper layer is used. Further, a resin film having moisture resistance may be formed. In this case, hot melt, reactive PUR hot melt, or the like is preferably used.

  The moisture-proof layer 4 provided between the surface decorative layer 2 and the permeable substrate 1 is preferably a thin film having a thickness of about 0.02 mm to 0.5 mm. Most preferably, a moisture-proof sheet-like material called a general aluminum sand paper or poly sand paper in which thin paper is laminated and integrated on both surfaces of an ultrathin resin film or an ultrathin metal film is used.

  Further, as shown in FIGS. 8 and 9, the back moisture-proof layer 5 may be laminated and integrated on the back surface of the permeable substrate 1. In this case, the influence of moisture and moisture on the permeable substrate 1 can be reduced.

  This back surface moisture-proof layer 5 should just be moisture-proof regardless of thickness. Generally, a thing of about 0.02 mm-6.0 mm is used. It may be a moisture-proof layer (see FIGS. 4 and 5) made of a thin film of about 0.02 mm to 0.5 mm, or a thick moisture-proof layer (see FIGS. 10 and 11) of about 2.0 mm to 6.0 mm.

  As the moisture-proof layer composed of the above thin film, a resin sheet or metal sheet coated with an adhesive sealer on the front and back, or a poly sand paper or aluminum sand paper in which the front and back of an ultrathin resin sheet or metal sheet are laminated and integrated with a paper layer is used. It is done. Further, a resin film having moisture resistance may be formed. In this case, hot melt, reactive PUR hot melt, or the like is preferably used.

  On the other hand, in the case of a thick moisture-proof layer, an olefin resin, a vinyl chloride resin, or a high specific gravity resin sheet in which these resins are mixed with an inorganic fine powder such as calcium carbonate or barium sulfate is preferably used. .

(Adhesion between permeable substrate and surface decorative layer or moisture barrier)
The permeable substrate 1 and the surface decorative layer 2 or the moisture-proof layers 4 and 5 are laminated and integrated through an adhesive. As this adhesive, a general adhesive is used. For example, urea melamine resins, vinyl acetate resins, latex resins, aqueous vinyl urethane resins, melamine resins, phenol resins, isocyanate resins, and modified products thereof may be used alone or in combination.

(Waterproofing method)
Next, a waterproofing method according to an embodiment of the present invention for waterproofing such decorative panels A1 to A4 will be described. This waterproofing treatment method is performed by applying the permeable waterproofing agent 15 to the exposed portion 8 of the end face of the permeable base material 1 that surrounds the decorative boards A1 to A4 that is not waterproofed.

  As a specific example, a decorative board A3 shown in FIG. 8 (consisting of a permeable base material 1, a surface decorative layer 2 laminated on the surface thereof, and a back moisture-proof layer 5 provided on the back surface of the base material 1). A waterproofing processing method will be described. As shown in FIGS. 1-5, from the boundary edge part with the surface decorative layer 2 of the permeable base material 1 among the exposed parts 8 of the lap | rotation base material 1 circumference of the above-mentioned circumference of the permeable base material 1, it is in a decorative board thickness direction. A predetermined distance d2 in the decorative sheet thickness direction from the boundary end of the permeable base material 1 with the back surface moisture-proof layer 5 leaving the surface side non-applied portion 10 in a range up to a position B1 separated by a predetermined distance d1. Set the application part 12 consisting of the range leaving the back side non-application part 11 in the range up to the position B2 that is only apart, and apply the permeable waterproofing agent 15 to the application part 12 using the application device 24, The waterproofing agent 15 applied to the application part 12 is infiltrated into the application part 12 or the front side non-application part 10 and the back side non-application part 11 of the exposed part 8, whereby the entire surface layer of the exposed part 8 is It forms in the waterproofing treatment layer 13 which consists of a permeable layer which the permeable waterproofing treatment agent 15 osmose | permeated.

  The width of the surface-side non-application part 10, that is, the distance d 1 from the boundary end part of the permeable substrate 1 to the surface decorative layer 2 of the exposed part 8 to the application part 12, and the width of the back-side non-application part 11, That is, the distance d2 from the boundary end part of the permeable base material 1 of the permeable base material 1 to the back surface moisture-proof layer 5 in the exposed part 8 to the application part 12 is the same, and the permeability applied to the application part 10 is the same. It is the distance that the waterproofing agent 15 can penetrate into the base material 1, and d1 = d2 = 0.5 mm to 1.0 mm is desirable.

  FIG. 1 shows that the permeable waterproofing agent 15 is simultaneously applied to the coating portions 12 and 12 on the front end of the permeable base material 1 of the decorative board A3 using, for example, a pair of coating devices 24 and 24, respectively. It is a side view which shows the state in the middle of doing. 2 is a front view showing the same state, and FIG. 3 is a plan view showing the same state. By moving the decorative plate A3 relative to each fixed application device 24, each application device 24 is moved. The permeable waterproofing agent 15 is applied from the direction perpendicular to the end face. FIG. 4 shows an enlarged part of the decorative board A3 in a state immediately after the permeable waterproofing agent 15 is applied to the application part 12 on the end of the mouth, and FIG. 5 shows an enlarged state after a while after application. Show.

  As shown in FIG. 4, when the permeable waterproofing agent 15 is applied to the application part 12 on the end face of the base material 1, the permeable waterproofing agent 15 applied to the surface of the application part 12 Along with permeation into the permeable base material 1, the decorative board thickness is also applied to the front surface non-application portion 10 and the back surface non-application portion 11 around which the permeable base material 1 is not applied from the application portion 12. It penetrates in the direction and spreads. Thus, the permeable waterproofing agent 15 applied to the surface of the exposed portion 8 penetrates and diffuses in the vicinity of the entire surface of the exposed portion 8 of the permeable base material 1, and as shown in FIG. The entire surface layer is formed on the waterproofing treatment layer 13 composed of a layer in which the permeable waterproofing agent 15 penetrates the substrate 1 at a certain depth. Thus, by applying the widths d1 and d2 of the non-application portions 10 and 11 to the boundary end portions, the surface decorative layer 2 is not contaminated.

  At this time, it is most preferable to perform waterproofing with the decorative surface of the decorative plate A facing downward. In this case, even if the permeable waterproofing agent 15 is scattered, the splashed waterproofing agent 15 falls as it is, so that the possibility of contaminating the makeup surface can be avoided as much as possible.

  In addition, in order to improve the permeability of the permeable waterproofing agent 15, the decorative board A may be heated in advance so as to have a surface temperature of about 40 to 50 ° C.

  More preferably, the permeable waterproofing agent 15 is cured by drying, heating, or ultraviolet irradiation after the penetration and diffusion.

(Applicator)
As the coating device 24, the coating device disclosed in Patent Document 2 is most preferably used. The coating device 24 is a non-contact type striped film coating device using a very small curtain coater, and applies the waterproofing agent 15 to a thin leaf-like liquid film (direction perpendicular to the paper surface of FIG. 1, FIGS. 2 and 3). , And the four air nozzle holes 26, 26,... Arranged around the liquid discharge nozzle hole 25 are opened. The air nozzle hole 26 from both sides of the thick film portion formed on the both side edges in the width direction of the water-like liquid film of the waterproofing agent 15 discharged from the liquid discharge nozzle hole 25 is provided. , 26,..., To make the thickness of the liquid film uniform by sandwiching with the air flow blown from the air flow, and to divide the small liquid droplets that scatter when the liquid film is discharged into the air flow on both sides of the liquid film and to join them. And in containment between the air flow, while blocking the splashing to the outside of both side edges of the liquid film is obtained so as to coat.

  By using such a coating device 24, the penetrating waterproofing agent 15 is not scattered and is coated with a clear liquid film on the boundary line of both side edges, so that the exposed portion 8 of the base 4 is surely exposed. The permeable waterproofing agent 15 can be applied leaving the non-application portions 10 and 11 having a slight width.

(Penetration waterproofing agent)
As the permeable waterproofing agent 15, a material having good permeability and compatibility with the permeable substrate 1 to be used is selected. For example, water-based acrylic emulsions such as water-based acrylic resin emulsions, epoxy-based resin emulsions, urethane-based resin emulsions, vinyl acetate-based resin emulsions and poval resins, and acrylic UV-curable resins are preferably used.

  In this case, the water repellency may be enhanced by modifying the resin with silicon or adding a wax-based resin.

  Most preferably, a silicone-modified acrylic emulsion resin is used as the permeable waterproofing agent 15.

(Effect of Embodiment 1)
Therefore, in this embodiment, the permeable waterproofing agent 15 permeates from the boundary end portion with the surface decorative layer 2 or the moisture-proof layer 4 in the exposed portion 8 on the end surface of the permeable base material 1 of the decorative board A3. Only the predetermined distance d2 at which the permeable waterproofing agent 15 can permeate from the boundary end with the back moisture-proof layer 5 while leaving the front side non-applied portion 10 in the range up to the position B1 separated by a possible predetermined distance d1. The permeable waterproofing agent 15 is applied to the application part 12 in the range where the back side non-application part 11 in the range up to the distant position B2 is left. The applied waterproofing agent 15 penetrates the base material 1 up to the front side non-application part 10 and the back side non-application part 11 in addition to the application part 12, whereby the entire surface layer of the exposed part 8 is Even in the front side non-application part 10 and the back side non-application part 11 as well as the application part 12, it is formed in the waterproof treatment layer 13 composed of the permeation layer of the waterproof treatment agent 15. Therefore, the waterproof treatment layer 13 on the front end is formed on the decorative board A3 in which the surface decorative layer 2 and the back moisture-proof layer 5 are laminated on the base material 1 without fouling the front decorative layer 2 or the back surface without any defect. Can do.

  The waterproofing method for the decorative plates A1, A2 and A4 shown in FIGS. 6, 7 and 9 is the same as that for the decorative plate A3. That is, in the waterproofing method of the decorative board A1 shown in FIG. 6, the boundary edge part with the surface decorative layer 2 of the permeable base material 1 among the exposed parts 8 in the ostium surface of the permeable base material 1 of the decorative board A1. The permeable waterproofing agent 15 is applied to the application part 12 in a range in which the surface-side non-application part 10 in the range up to the position B1 separated by a predetermined distance d1 is applied, and the waterproofing treatment agent 15 is applied to the exposed part 8. The entire surface layer of the exposed portion 8 is formed on the waterproofing treatment layer 13 composed of the penetration layer of the permeable waterproofing agent 15 by infiltrating from the application part 12 to the surface side non-application part 10.

  Moreover, in the waterproofing processing method of decorative board A2 shown in FIG. 7, from the boundary edge part with the moisture-proof layer 4 of the permeable base material 1 among the exposed parts 8 in the wood end surface of the permeable base material 1 of the decorative board A2, The permeable waterproofing agent 15 is applied to the application part 12 in the range where the surface side non-application part 10 in the range up to the position B1 separated by the predetermined distance d1 is applied, and the waterproofing treatment agent 15 is applied to the application part of the exposed part 8 The entire surface layer of the exposed portion 8 is formed on the waterproofing treatment layer 13 composed of the penetration layer of the permeable waterproofing agent 15 by permeating from 12 to the surface side non-application portion 10.

  Furthermore, in the waterproofing method of the decorative board A4 shown in FIG. 9, from the boundary edge part with the moisture-proof layer 4 of the permeable base material 1 among the exposed parts 8 in the wood end surface of the permeable base material 1 of the decorative board A4. The range from the boundary end to the back moisture-proof layer 5 of the permeable base material 1 to the position B2 that is separated by the predetermined distance d2 while leaving the front side non-applied portion 10 in the range to the position B1 that is separated by the predetermined distance d1 The permeable waterproofing agent 15 is applied to the application part 12 in the range where the backside non-application part 11 is left, and the waterproofing agent 15 is applied to the application part 12 of the exposed part 8 or the front side non-application part 10 and the backside. By osmosis | permeating into the non-application part 11, the whole surface layer of the exposed part 8 is formed in the waterproofing processing layer 13 which consists of a permeable waterproofing agent 15 osmosis | permeation layer.

[Embodiment 2]
10 and 11 show a second embodiment of the present invention (note that the same parts as those in FIGS. 1 to 9 are given the same reference numerals and their detailed explanations are omitted), and chamfering or actual cutting is performed on the end of the end. The decorative board A5 that has been processed is waterproofed.

  That is, in this embodiment, the decorative board A5 includes the permeable base material 1, the surface decorative layer 2 laminated and integrated on the surface thereof, and the back moisture-proof layer 5 laminated and integrated on the back surface of the base material 1. The back moisture-proof layer 5 is a thick type. A chamfered portion 17 is formed on the front end of the decorative board A5, for example, by obliquely notching the entire surface side of the surface decorative layer 2 or part of the permeable substrate 1 on the four-sided end.

  Further, for example, one side of the face facing the width direction of the decorative board A5 has a concave formed by cutting a substantially central portion in the decorative board thickness direction into a U-shaped cross section across the permeable base material 1 and the back moisture-proof layer 5. The female real part 19 having the stripes 18 is formed on the other side, and on the other side, a convex portion composed of a remaining part obtained by cutting out the substantially front half in the decorative plate thickness direction and the substantially back half of the back moisture-proof layer 5 into a rectangular shape. A male part 21 having a strip 20 is provided. In the chamfered portion 17 and the real portions 19 and 21 of the decorative board A thus obtained, the wood end surface of the permeable base material 1 is an exposed portion 8 that is not waterproofed. That is, the chamfered portion 17 and the male and female real portions 19, 21 are provided on the end face of the decorative board A 5 so as to include the exposed portion 8 of the permeable base material 1.

  Unlike the above example, the decorative board A5 may be provided with a female real part on one of the opposite ends in the length direction and a male real part on the other, and in the width direction and the length direction. Both may have a male and female real part.

  And, as shown in FIG. 10, of the exposed portion 8 of the permeable base material 1, in which the chamfered portion 17, the female real portion 19, and the male real portion 21 are provided on the cuff surface of the decorative board A5 as described above, The waterproof treatment agent 15 is applied to the application portion 12 excluding the non-application portions 10 and 11 in the same manner as in the first embodiment, and the waterproof treatment agent 15 is applied to the application portion 12 of the exposed portion 8 or the surface side non-application. By infiltrating the coating part 10 and the back surface side non-coating part 11, as shown in FIG. 11, the entire surface layer of the exposed part 8 from the layer in which the permeable waterproofing agent 15 penetrates the base material 1 to a certain depth. It forms in the waterproofing processing layer 13 which becomes.

  FIG. 10 shows a state in which the veneer surfaces facing in the width direction among the veneer surfaces of the decorative board A are simultaneously applied using a pair of applicators 24 and 24. In this case, in the figure in which the female real part 19 is formed, with respect to the right end of the mouth, the coating device 24 is directed to the front side (lower side in the drawing) of the decorative board A, and the male real part 21 is formed. On the left side of the mouth, the waterproofing agent 15 is applied to the exposed portion 8 of the permeable base material 1 with the coating device 24 inclined to the back side (upper side in the drawing) of the decorative board A. . By doing so, the waterproofing agent 15 can be applied to the uneven thickness of the uneven portion 8 in a uniform thickness.

  FIG. 11 shows a state in which the decorative board A5 is inverted after the application. Other configurations are the same as those of the first embodiment.

(Effect of Embodiment 2)
Therefore, in this embodiment, even if the chamfered portion 17 and the male and female real portions 19 and 21 are provided on the end surface of the decorative board A5 so as to include the exposed portion 8 of the base material 1, as in the first embodiment, The permeable waterproofing agent 15 can be applied to the application portion 12 to allow the non-application portions 10 and 11 to penetrate, and the permeable base material 1 of the decorative board A having the chamfered portion 17 and the male and female real portions 19 and 21. The waterproof layer 13 can be formed without a defect on the end of the wood.

[Other Embodiments]
In addition, in each said embodiment, although the decorative board A1-A5 in which the back surface moisture-proof layer 5 is provided in the back surface of the permeable base material 1 is shown, a wooden material is laminated | stacked on the back surface side of this back surface moisture-proof layer 5 further. It may be integrated. As the wood material, fiber board and flake board with large dimensional change due to moisture and moisture such as fiber board and particle board are not preferable, and wood material made of single board laminate or solid material such as plywood or LVL is suitably used. It is done.

  Moreover, in the said embodiment, although both the surface side non-application part 10 and the back side non-application part 11 are set to the exposed part 8 of the permeable base material 1 end face, in this invention, the surface side decorative layer 2 The back side non-applied part 11 on the side that is not the boundary is not essential, and covers (includes) a part of the thick type back side moisture-proof layer 5 provided on the back side and the wood material provided on the back side. The permeable waterproofing agent 15 may be applied.

  Next, specific examples will be described.

Example 1
A surface decorative layer made of an olefin resin decorative sheet having a thickness of 0.17 mm, a permeable substrate made of MDF having a specific gravity of 0.8 and a thickness of 2.7 mm, and a 3 mm high specific gravity resin mat (70 parts by weight of calcium carbonate) And a moisture-proof back layer composed of 30 parts by weight of a vinyl chloride resin) were laminated and integrated with a water-based vinyl urethane adhesive in the order described in a cold pressure to obtain a laminate (decorative board). A chamfered portion and a male and female real portion having a width of 0.5 mm were provided on the end of the laminated body.

  After heating this laminated body so that the surface temperature becomes 45 ° C., the surface-side non-applied portion in the range of 0.5 mm away from the boundary end portion with the surface decorative layer of the permeable base material, And a penetrating waterproof treatment agent made of a silicone-modified acrylic resin emulsion on the coating part excluding the back-side non-coating part in the range 0.5 mm away from the boundary part with the back-side moisture-proof layer of the permeable base material with a very small curtain coater Applied. When left for 60 seconds after coating, all of the permeable waterproofing agent applied to the surface penetrated, and the entire exposed portion of the permeable substrate including the non-coated portion and the chamfered portion was all wet. A transparent paint film layer was provided on the surface of the laminate veneer decorative sheet with an acrylic ultraviolet curable paint to obtain a decorative board on which a waterproof layer was formed. This decorative board was a decorative board having a suitable design without uneven makeup.

(Example 2)
A surface decorative layer made of decorative paper having a thickness of 0.1 mm, a permeable substrate made of MDF having a specific gravity of 0.8 and a thickness of 5.5 mm, and a back moisture-proof layer made of 0.1 mm polysand paper A laminated body (decorative board) was obtained by laminating and integrating with a water-based vinyl urethane adhesive in the order of description by cold pressure. A chamfered portion and a male and female real portion each having a width of 1 mm were provided on the end of the laminated body.

  After heating this laminated body so that the surface temperature becomes 45 ° C., the surface-side non-applied portion in the range of 0.5 mm away from the boundary end portion with the surface decorative layer of the permeable base material, And a penetrating waterproof treatment agent made of a silicone-modified acrylic resin emulsion on the coating part excluding the back-side non-coating part in the range 0.5 mm away from the boundary part with the back-side moisture-proof layer of the permeable base material with a very small curtain coater Applied. When left for 60 seconds after application, all of the permeable waterproofing agent applied to the surface penetrated, and the entire exposed part of the permeable substrate including the non-applied part and the chamfered part was all wet. A transparent paint film layer was provided on the surface of the laminate veneer decorative sheet with an acrylic ultraviolet curable paint to obtain a decorative board on which a waterproof layer was formed. This decorative board was also a decorative board having a suitable design without uneven makeup.

(Example 3)
A surface decorative layer made of an oak thin veneer decorative sheet having a thickness of 0.25 mm and a permeable substrate made of MDF having a specific gravity of 0.8 and a thickness of 2.7 mm were heated with a urea melamine adhesive. The pressure sheet was integrated into a decorative sheet pasting base material. Furthermore, this decorative sheet pasting base material, a back moisture-proof layer made of 0.1 mm thick poly sand paper, and a 9-ply 5-ply plywood are laminated and integrated by cold pressure with an aqueous vinyl urethane adhesive in the order of description. Thus, a laminate (decorative board) was obtained. A chamfered portion and a male and female real portion having a width of 0.5 mm were provided on the end of the laminated body.

  After heating this laminated body so that the surface temperature becomes 45 ° C., the surface-side non-applied portion in the range of 0.5 mm away from the boundary end portion with the surface decorative layer of the permeable base material, A permeable waterproof treatment agent made of a silicone-modified acrylic resin emulsion is applied to the coating part excluding the back side non-coating part in a range of 0.5 mm away from the boundary part between the back moisture proof layer and the permeable base material with a very small curtain coater. Applied. When left for 60 seconds after coating, all of the permeable waterproofing agent applied to the surface penetrated, and the entire exposed portion of the permeable substrate including the non-coated portion and the chamfered portion was all wet. A transparent paint film layer was provided on the surface of the laminate veneer decorative sheet with an acrylic ultraviolet curable paint to obtain a decorative board on which a waterproof layer was formed. This decorative board was also a decorative board having a suitable design without uneven makeup.

(Comparative Example 1)
In the said Example 3, it processed by the same method except having apply | coated the permeable waterproofing agent so that the wooden thin projection board part of a chamfer part might be covered. In this method, a part of the applied permeable waterproofing agent protrudes from the surface of the thin wood veneer, and after the permeable waterproofing agent has been wiped off, the transparent coating layer is applied with an acrylic UV curable paint. To obtain a decorative board on which a waterproof layer was formed. In this example, the colorant did not adhere to the portion where the permeable waterproofing agent was applied, and only a decorative board with uneven color could be obtained.

  The present invention is extremely useful and has high industrial applicability because the waterproof treatment layer can be formed on the entire surface of the base material without a defect without attaching the waterproof treatment agent to the decorative sheet or the like on the base material surface.

FIG. 1 shows a state in the middle of applying a permeable waterproofing agent to the application part of the end of the veneer facing the width direction of the permeable base material of the decorative board by the waterproofing method according to Embodiment 1 of the present invention. It is a side view. FIG. 2 is a front view showing the same state. FIG. 3 is a plan view showing the same state. FIG. 4 is an enlarged front view showing a part of the decorative board in a state immediately after the permeable waterproofing agent is applied to the application part on the end of the end. FIG. 5 is a diagram corresponding to FIG. 4 and shows a state after a while after application. FIG. 6 is a front view showing an example of a decorative board to be waterproofed. FIG. 7 is a front view showing an example of a decorative board to be waterproofed. FIG. 8 is a front view showing an example of a decorative board to be waterproofed. FIG. 9 is a front view showing an example of a decorative board to be waterproofed. FIG. 10 is a view corresponding to FIG. 1 showing Embodiment 2 of the present invention. FIG. 11 is a front view showing the decorative board of FIG. 10 in a state after a while after being applied.

Explanation of symbols

A1 to A5 decorative board B1 Position away from the boundary edge of the permeable base material with the surface decorative layer by a distance that allows penetration of the permeable waterproofing agent B2 Penetration from the boundary edge of the permeable base material with the back moisture-proof layer D1, d2 distance 1 Permeable substrate 2 Surface decorative layer 4 Moisture proof layer 5 Back surface moisture proof layer 8 Exposed part 10 Front side non-application part 11 Back side non-application part 12 Application Part 13 Waterproofing treatment layer 15 Penetration waterproofing agent 17 Chamfering part 19 Female real part 21 Male real part 24 Coating device

Claims (6)

A decorative board waterproofing method comprising an permeable base material and a surface decorative layer laminated on the surface of the permeable base material, and having an exposed portion that is not waterproofed on the top surface of the permeable base material. There,
Of the exposed portion, the surface side non-applied portion in a range from the boundary end portion with the surface decorative layer of the permeable base material to a position separated from the boundary end portion by a distance capable of penetrating the permeable waterproofing agent. The permeable waterproofing agent is applied to the coating portion in the range where the surface remains, and the waterproofing agent is allowed to permeate the coated portion of the exposed portion or the non-coated portion on the surface side, so that the entire surface layer of the exposed portion is permeable. A method for waterproofing a decorative board, comprising forming a waterproofing layer comprising a permeation layer of a waterproofing agent. A decorative board comprising an permeable base material and a surface decorative layer laminated on the surface of the permeable base material via a moisture-proof layer, and having an exposed portion that is not waterproofed on the top surface of the permeable base material A waterproofing method,
Of the exposed portion, a surface-side non-applied portion in a range from a boundary end portion with the moisture-proof layer of the permeable base material to a position separated from the boundary end portion by a distance that allows the penetration of the permeable waterproofing agent. Applying a permeable waterproofing agent to the remaining area of the coating, and allowing the waterproofing agent to permeate the coated part of the exposed part or the surface-side non-coated part, so that the entire surface layer of the exposed part is permeable and waterproof. A method for waterproofing a decorative board, comprising: forming a waterproof treatment layer comprising a permeation layer of a treatment agent. In the waterproofing method of the decorative board according to claim 1 or 2,
A back moisture proof layer is provided on the back of the permeable substrate,
The application portion is a back surface in a range from the boundary end portion of the exposed portion to the back moisture-proof layer of the permeable base material to a position separated from the boundary end portion by a distance capable of penetrating the permeable waterproofing agent. It is a range that leaves the side non-application part,
The permeable waterproofing agent is applied to the application part, and the waterproofing agent is infiltrated into the application part or the back surface non-application part, so that the entire surface layer of the exposed part is made of the permeable waterproofing agent infiltration layer. A waterproofing method for a decorative board, comprising forming a waterproofing layer. In the waterproofing processing method of any one of Claims 1-3,
The chamfered part and the male and female real part are provided on the face of the decorative plate so as to include the exposed part of the permeable base material.
A waterproofing treatment method for a decorative board, comprising applying a waterproofing agent to an application part of a permeable base material provided with the chamfered part and the male and female real parts. In the waterproofing processing method of the decorative board of any one of Claims 1-4,
A method for waterproofing a decorative board, wherein the coating apparatus for applying the waterproofing agent is a non-contact type striped film coating apparatus using an extremely small curtain coater. In the waterproofing method of the decorative board of any one of Claims 1-5,
A method for waterproofing a decorative board, wherein the width of the non-application portion is 0.5 mm to 1.0 mm.

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