JP2019163681A - Manufacturing method of floor material - Google Patents

Abstract

To execute a uniform coloring without causing a blow back with dryness.SOLUTION: A floor material is manufactured by (1) a process of obtaining a floor material having a decorative surface layer of 1.0 mm or greater of thickness at least on a surface layer, (2) a process of forming a programmed vertical groove part on the surface of said decorative surface layer, (3) a process of spraying pigmented coating on the surface of said decorative surface layer with the programmed vertical groove part formed, (4) a process of contacting a brush roll with said pigmented coating surface and (5) a process of curing the pigmented coating remaining on the surface of said decorative surface layer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for manufacturing a flooring.

  2. Description of the Related Art Conventionally, flooring materials are known in which a decorative board is subjected to a floating process so as to make the grain stand out. For example, Patent Document 1 discloses a plywood using a softwood veneer having a thickness of 0.7 to 3.0 mm as a surface veneer. The plywood of Patent Document 1 is subjected to float processing by brushing, blasting, or the like. Thereby, the unevenness | corrugation is formed in the surface of a plywood, and the grain of a plywood can be made to stand out. In the following, the fact that the wood grain stands out is called a three-dimensional effect.

  For example, Patent Document 2 discloses a flooring having a wood base material, a wood fiber board provided on the wood base material, and a wood board provided on the wood fiber board. . In the floor material of patent document 2, the floating process by brushing is given to the board. Thereby, the unevenness | corrugation is formed in the surface of a board, and it is supposed that a three-dimensional effect can be given to a flooring.

  For example, Patent Document 3 discloses a flooring provided with a base material, a wood thin veneer layer provided on the base material, and a clear coating layer provided on the wood thin veneer layer. ing. In the flooring of Patent Document 3, the surface of the thin wood veneer layer is floated. Thereby, the unevenness | corrugation is formed in the surface of a wooden thin veneer layer, and it is supposed that a three-dimensional feeling can be given to a flooring.

  However, when the unevenness of the floor material surface obtained by the floating process is increased, the vertical grooves become inconspicuous. In this case, the innocence obtained by forming the vertical groove is lost. On the other hand, if the unevenness of the floor material surface obtained by the floating process is reduced, it becomes difficult to produce a three-dimensional effect by the floating process. In order to solve these problems, the inventors of the present invention disclosed in Patent Document 4 a flooring that can give a three-dimensional effect by uneven processing while preventing the loss of innocence obtained by the longitudinal groove planned portion. The manufacturing method is proposed. Patent Document 4 describes that the surface of the decorative layer may be colored before painting.

  As a method for coloring a decorative sheet sticking flooring material, for example, in Patent Document 5, a base film is formed with a sponge roll, the base film is colored with a sponge roll, and excess colorant is scraped off with a scraping roll. A method is disclosed.

JP 2009-241571 A JP 2008-1000043 A JP 2003-266409 A JP, 2006-121510, A JP 2012-92504 A

  However, according to the research of the present inventors, coloring is performed on a flooring provided with a concave and convex portion having a plurality of concave portions having a depth of 0.20 mm or more and a decorative layer having a thickness of 1.0 to 3.0 mm. At that time, it has been found that various problems occur when the method disclosed in Patent Document 5 is applied.

  This floor material has a concave portion of a certain depth on the surface of the decorative layer, and a sufficiently deep vertical groove planned portion (a general term for vertical grooves and half grooves scheduled to form vertical grooves in the constructed floor). For this reason, it is difficult to uniformly color the inner surfaces of the recessed portions and the longitudinal groove planned portions when the amount of the colored paint applied is small in a normal coloring method. On the other hand, when the amount of the colored paint applied is large, the colored paint remains in the recessed portions and the longitudinal groove planned portions, thereby deteriorating the design. For this reason, it is effective to increase the coating amount of the colored paint sufficiently and scrape off after that.

  However, the concave portion formed by subjecting the decorative layer surface to uneven processing is rougher than the normal sanded decorative layer surface, the opening of the conduit is enlarged, and the amount of the colorant sucked is increased. For this reason, in the normal coloring method, the colored paint blows back in the drying step. This problem also occurs in the longitudinal groove planned portion. However, this problem does not occur in a floor material using a veneer having a thickness of less than 1.0 mm.

  In addition, forming the base film before the colored coating is advantageous for uniform coloring if the colored coating is performed after reliable drying, but increases the cost and decreases the productivity. Further, when the base film is not sufficiently dried, uniform coloring cannot be performed.

  The present invention provides a method for producing a flooring material, in which, when coloring a flooring material having a decorative layer having a thickness of 1.0 mm or more on at least a surface layer, no blowback occurs during drying, and uniform coloring can be performed. The purpose is to do.

  This invention makes the summary the manufacturing method of the following flooring.

[A] A method for producing a flooring comprising the following steps (1) to (5).
(1) The process of obtaining the base material for floors provided with the decorative layer of thickness 1.0mm or more in the surface layer at least,
(2) a step of forming a longitudinal groove planned portion on the surface of the decorative layer;
(3) A step of applying a colored paint to the surface of the decorative layer on which the longitudinal groove planned portion is formed,
(4) a step of bringing a brush roll into contact with the colored paint surface, and
(5) A step of curing the colored paint remaining on the surface of the decorative layer.

[B] Before the step (3),
Providing the surface of the decorative layer with irregularities and forming a plurality of recesses having a depth of 0.20 mm or more,
The manufacturing method of the flooring of said [A].

[C] In the step (3),
Use solvent-free UV curable paint,
The manufacturing method of the flooring of said [A] or [B].

[D] In the step (4),
After bringing the brush roll in which the moving direction of the brush on the contact surface is the same as the conveying direction of the floor substrate into contact with the colored paint surface, the moving direction of the brush on the contacting surface is the conveying direction of the floor substrate. A brush roll that is opposite to the above, and contacting the colored paint surface,
The manufacturing method of the flooring material in any one of said [A]-[C].

[E] In the step (4),
The manufacturing method of the flooring in any one of said [A]-[D] using the brush roll whose outer diameter of a bristle material is 0.1-1.0 mm as said brush roll.

[F] In the step (4),
The method for producing a flooring material according to any one of [A] to [E] above, wherein a brush roll having a bristle length of 30.0 to 60.0 mm is used as the brush roll.

[G] In the step (4),
When the distance from the rotation axis center of the brush roll to the hair tip is D1, the shortest distance from the rotation axis center to the contact surface is D2, and the difference D1-D2 is D, the length of the hair material The method for manufacturing a flooring material according to any one of the above [A] to [F], wherein the brush roll is disposed at a position where 4D to 10D.

  According to the present invention, when coloring a flooring provided with a decorative layer having a thickness of 1.0 mm or more on at least a surface layer, blowback does not occur during drying, and uniform coloring can be performed.

It is a schematic plan view explaining the post-processing process in the manufacturing method of this invention. It is a schematic plan view explaining arrangement | positioning of the brush roll in a post-processing process. 1 is a schematic plan view of a flooring according to an embodiment of the present invention. It is an AA line schematic sectional drawing of FIG.

(Method for manufacturing flooring)
Hereinafter, with reference to figures, the manufacturing method of the flooring 10 concerning one embodiment of the present invention is explained. In addition, in the following description, the base material for floors obtained by affixing the decorative layer 14a which has a thickness of 1.0-3.0 mm to the base material 12 of a predetermined shape is illustrated as a base material for floors. However, the floor base material of the present invention may be any material provided with a decorative layer having a thickness of 1.0 mm or more on the surface layer, and may be a solid material.

(1) Floor base material preparation step First, a base material 12 having a predetermined shape and a decorative layer 14a having a thickness of 1.0 to 3.0 mm are prepared. Next, an adhesive is applied to the base material 12, and the decorative layer 14a is attached to the base material 12 by pressure bonding (for example, hot pressing) to obtain the floor base material 30 (sticking step). As the adhesive, for example, a synthetic resin adhesive such as phenol resin, melamine resin, epoxy resin, vinyl acetate resin, acrylic resin, or polyurethane resin can be used.

  Various plywood can be used as the base material 12, and for example, a cross plywood (6 ply plywood or the like) can be used. The thickness t1 of the base material 12 is, for example, 10 mm.

  As the decorative layer 14a, a ground plate or a thick single plate can be used. The decorative layer 14a is preferably a coniferous or hardwood ring material, for example, when the surface of the decorative layer is processed to be uneven. In the case of conifers, the early wood portion has a lower specific gravity and is softer than the late wood portion, so that it is selectively scraped to form a recess. Moreover, in the case of a ring-hole material, a relatively soft channel portion existing along the annual ring is selectively scraped to form a recess. That is, the “recessed portion” in the present invention is a recessed portion formed by selectively scraping a softer portion than other portions of the surface of the decorative layer 14a. The decorative layer 14a is bonded to the substrate 12 through an adhesive layer (not shown).

  In addition, when using a cloth plywood as the base material 12, for example, on the base material 12 so that the fiber direction of the uppermost plate material of the base material 12 and the fiber direction of the decorative layer 14a intersect (substantially orthogonal). A decorative layer 14a is provided. However, a solid material having a thickness of 6.0 to 15 mm (in this case, not only the surface layer but the whole is a decorative layer) may be used as the floor base material. In this case, the pasting step is omitted. Is done.

(2) Groove part formation process Next, the longitudinal groove planned part 20 is formed in the base material 30 (base material 12) for floors (groove part formation process). A fruit (in this embodiment, male fruit 16a and female fruit 16b) may be formed together with the groove forming process (actual forming process). The groove forming step and the actual forming step can be performed simultaneously.

  Prior to the color coating step, the surface of the decorative layer may be subjected to uneven processing to form a plurality of recesses having a depth of 0.20 mm or more. For example, concavo-convex processing such as floating processing is performed by brushing, blasting, or the like. At this time, the surface of the decorative layer 14a is brushed with a brushing device having a first iron brush and a second resin brush (unevenness processing step). Specifically, first, the entire surface of the decorative layer 14a is brushed with an iron first brush to form a plurality of recesses. Then, while forming a recessed part with the resin 2nd brush, the mark on the surface of the decorative layer 14a is removed. Thereby, the some recessed part which has a smooth surface in the decorative layer 14a can be formed.

  At this time, it is preferable that the depth of the plurality of recesses formed in the decorative layer 14a is 0.20 mm or more. However, at this time, the opening of the conduit becomes large on the surface of the decorative layer 14a. As a method of uneven processing, in addition to floating processing by brushing or blasting, there are boring processing, sawing processing, etc. using a circular saw, a band saw or an NC processing machine. The unevenness processing step may be performed before or after the groove portion forming step.

(3) Color coating step Next, a colored paint is applied to the surface of the decorative layer 14a while transporting the floor base material (floor base material having a plurality of recesses 24 formed in the decorative layer 14a) 30 in one direction. (Coloring process). The colored paint may be water-based or solvent-based, but is preferably solvent-free. This is because if it is a solvent-free colored paint, it is difficult to enter a pipe having a large opening in the concavo-convex process, and it is difficult for the colored paint to blow back during drying. In particular, a paint that cures in a short time such as an ultraviolet curable paint is preferable. This is because the productivity is improved and it is difficult for the colored paint to blow back during drying. For the colored paint, a colored paint of a desired color is made using a pigment or the like. There is no limitation on the color. Although there is no limitation in the application method of the colored paint, it can be applied by, for example, applying with a sponge roll and scraping with a rubber reverse roll or the like.

  As the colored paint, a synthetic resin paint such as a urethane resin or an acrylic resin to which a colorant such as a pigment or a dye is added can be used. Synthetic resin paints have a function to suppress the flaking of the decorative layer. Moreover, what added colorants, such as a pigment and a dye, to the natural paint which consists of vegetable oil (sunflower oil, soybean oil, thistle oil etc.) and natural resin (lacquer etc.) can be used for a colored paint. There is no limitation on the color of the colorant such as pigment or dye. For example, an arbitrary color such as beige, white, or gray may be selected.

(4) Post-processing step Next, a brush roll is brought into contact with the surface of the decorative layer 14a coated with the colored paint. For example, referring to FIG. 1, it is preferable to use brush rolls 40 and 41 to make the colored paint conform to the surface of the decorative layer 14 a and to scrape off the extra colored paint. At this time, the moving direction of the brush on the contact surface 42 is the same as the conveying direction of the floor base material 30 (the direction of the arrow in the drawing), and the brush roll (forward rotating brush roll 40) is applied to the surface of the colored paint (the colored paint is A brush roll (reverse rotating brush roll 41) in which the moving direction of the brush on the contact surface 42 is opposite to the conveying direction of the floor base material 30 after the contact is made with the surface of the applied decorative layer 14a). It is preferable to contact the surface (the surface of the decorative layer 14a to which the colored paint is applied).

  As the bristle material of the brush rolls 40 and 41, it is necessary to use a material having scraping property and durability. For example, fibers such as nylon, polypropylene, vinyl chloride, polyester, acrylic, aramid, and Teflon (registered trademark) can be used. For the purpose of imparting durability or the like, monoeight, elevator or the like in which carbon black or the like is added to nylon may be used.

  The outer diameter of the hair material is preferably 0.1 to 1.0 mm. Usually, the inner diameter of the channel is 0.3 to 0.5 mm, and it is preferable that the outer diameter is small in order to put the colored paint into the inside of the conduit. Moreover, it becomes possible to reach a thin groove bottom by using a bristle material having a small outer diameter. Further, by weakening the scraping of the colored paint on the canal portion, the contrast between the canal and other portions can be increased. Therefore, it is preferable that the outer diameter of the bristle material of the brush rolls 40 and 41 is 1.0 mm or less. In particular, 0.5 mm or less is preferable and 0.4 mm or less is more preferable. On the other hand, if the outer diameter of the bristle material is too small, it will be difficult to put the colored paint inside the conduit, and the excess colored paint will not be scraped off sufficiently. Therefore, the outer diameter of the bristle material is preferably 0.1 mm or more, and more preferably 0.2 mm or more.

  The length of the hair material is preferably 30.0 to 60.0 mm. If the bristle material is too long, the pressing force at the time of contact is weakened, and scraping may be insufficient. Therefore, the length of the hair material is preferably 60.0 mm or less, and more preferably 50.0 mm or less. On the other hand, if the hair material is too short, the pressing force becomes strong, and the surface of the decorative layer 14a may be damaged, which may impair the design. Therefore, the length of the hair material is preferably 30.0 mm or more, and more preferably 40.0 mm or more. In particular, from the viewpoint of uniform coloring inside the groove, the groove depth is preferably 10 times or more, more preferably 20 times or more.

  In particular, referring to FIG. 2, the distance from the rotation axis center c of the brush rolls 40 and 41 to the bristle tip is D1, and the shortest distance from the rotation axis center c to the contact surface 42 is D2. When it is set as D (= D1-D2), it is good to arrange | position the brush rolls 40 and 41 in the position from which the length of a hair material becomes 4D-10D. In particular, 5D or more is preferable, and 8D or less is preferable. Moreover, it is good to set D in the range of 5.0-10.0 mm. Within this range, uniform coloring can be achieved without damaging the surface of the decorative layer 14a.

  In the example shown in FIG. 1, a post-processing step in which the forward rotation brush roll 40 and the reverse rotation brush roll 41 are sequentially brought into contact with the decorative layer 14 a is shown, but one or more brush rolls are further provided after the reverse rotation brush roll 41. A step of contacting may be included. For example, the forward rotation brush roll may be brought into contact with the reverse rotation brush roll 41. In any case, it is preferable to include at least a step of bringing the forward rotating brush roll 40 into contact and a step of bringing the reverse rotating brush roll 41 into contact. As described above, when at least the step of contacting the forward rotating brush roll 40 and the step of contacting the reverse rotating brush roll 41 are included, uneven coloring occurs at the front side or the rear side in the traveling direction at the end portion and the concave portion of the flooring. Can be prevented. Each brush roll may have the same specifications (material, outer diameter and length of bristle material, etc.), but may have different specifications. Further, the arrangement of the brush rolls may be the same position (the value of D is the same). You may arrange | position in a different position.

  In the floating process, a plurality of passages and the fibers between them are cut to form a recess, so that the opening is large and the colorant easily enters the recess. Moreover, since the depth of a recessed part is comparatively shallow, when an application roll contacts, a colorant is easy to be pushed in and a colorant tends to enter the inside of a canal. Therefore, blowback is likely to occur. On the other hand, since the original channel is cut in the shape as it is, the planned longitudinal groove portion has a small opening and hardly contains a colorant. Further, since the coating roll is not in contact except for the vicinity of the surface, it is difficult for the colorant to enter the inside of the canal. Therefore, compared with the recessed part formed by the floating process, the blowback is less likely to occur in the longitudinal groove planned part. Therefore, the effect of the present invention is particularly remarkable in a flooring provided with a concave portion formed by a float process.

(5) Drying step After the post-treatment step, the colored paint is dried (drying step). When an ultraviolet curable coating is used, the coating is cured by irradiating with ultraviolet rays. After the post-treatment step, the colored paint can be cured in as short a time as possible for efficient production.

(6) Other Steps In the production method of the present invention, after the drying, coloring with an aqueous colorant may be performed (aqueous coloring step). In the aqueous coloring step, for example, coloring is performed with an aqueous coloring agent using a rubber roll, a metal roll, or the like. Since a flat rubber roll or metal roll is used, only the surface is colored. Since the colored paint is introduced into the conduit by the above-described process, even if an aqueous colorant is applied on the conduit and dried, no blowback occurs. The water-based colorant may be the same color as the above-described colored paint, or may give contrast with a different color. After application of the aqueous colorant, it is dried using a hot air dryer or the like.

  After the aqueous coloring step, the coating layer 14b may be formed on the surface of the decorative layer 14a (painting step). In the painting process, the coating layer 14b may be formed so that the concave portion of the decorative layer 14a is completely filled. However, in order to enhance the three-dimensional effect, the coating layer 14b is formed so that the shape of the concave portion appears on the surface 18. May be. In addition, it is preferable that the several recessed part which satisfies the said conditions remains after coating. In order to achieve a finish that makes use of the concave portions by the uneven processing, it is preferable to use a paint having a relatively low viscosity as the undercoat paint and to reduce the coating amount.

(Composition of flooring)
Hereinafter, an embodiment of a flooring obtained by the flooring production method of the present invention will be described with reference to the drawings. In addition, the dimension of the structural member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each structural member, etc. faithfully.

  FIG. 3 is a schematic plan view of the flooring 10 according to an embodiment of the present invention, and FIG. 4 is a schematic cross-sectional view taken along line AA of FIG.

  Referring to FIG. 3, flooring 10 has a substantially rectangular shape in plan view. With reference to FIG. 3, for example, the length L of the flooring 10 is 1818 mm, and the width W is 303 mm. The length L and the width W of the flooring 10 are not limited to the above example. For example, the length L may be about 900 mm, and the width W may be about 145 mm. However, in order to reduce the labor of construction, it is preferable that the length and width are large. The length is preferably 1800 mm or more. The width is preferably 90 mm or more, more preferably 140 mm or more, and still more preferably 300 mm or more. Moreover, the thickness of the flooring 10 is 6.0 mm, 9.0 mm, 12.0 mm, or 15.0 mm, for example.

  Referring to FIGS. 3 and 4, flooring 10 includes a base material 12 and a decorative layer 14 a provided on base material 12. Various plywood can be used as the base material 12, and for example, a cross plywood (6 ply plywood or the like) can be used. The thickness t1 of the base material 12 may be set according to the thickness of the floor material that is the final product. With reference to FIG. 4, the thickness t1 of the base material 12 is 10.0 mm, for example.

  A coating layer 14b may be formed on the surface of the decorative layer 14a. The coating layer 14b can be formed of urethane, for example. The coating layer 14b may be colored or colorless. Further, on the surface of the decorative layer 14a, the conduit is filled with a colored paint, and there is no blowing back at the time of drying, and uniform coloring is performed. The decorative layer 14a is bonded to the substrate 12 through an adhesive layer (not shown). The thickness t2 of the decorative layer 14a is 1.0 to 3.0 mm.

  In addition, when using a cloth plywood as the base material 12, for example, on the base material 12 so that the fiber direction of the uppermost plate material of the base material 12 and the fiber direction of the decorative layer 14a intersect (substantially orthogonal). A decorative layer 14a is provided. In the present embodiment, for example, the decorative layer 14 a is provided so that the fiber direction of the decorative layer 14 a is substantially parallel to the longitudinal direction LD of the flooring 10.

  With reference to FIG. 3 and FIG. 4, the base material 12 has a rectangular shape in plan view, and has four side surfaces 12a to 12d. The side surface 12a and the side surface 12c extend in the longitudinal direction LD of the flooring 10 (base material 12), and the side surface 12b and the side surface 12d extend in the width direction WD of the flooring 10 (base material 12). A male fruit 16 a is provided on the side surface 12 a and the side surface 12 b so as to protrude to the side of the base material 12. A female fruit 16b is provided on the side surface 12c and the side surface 12d so as to be recessed toward the inside of the base material 12.

  When a plurality of flooring materials 10 are joined together to form a floor (not shown), the male fruit 16a is inserted into the female fruit 16b of another adjacent flooring material 10.

  With reference to FIG. 3, the surface 18 of the decorative layer 14 a has a longitudinal groove planned portion 20 extending in the longitudinal direction LD of the flooring 10, and a concavo-convex processed portion 22 (hereinafter referred to as a processed portion 22). In the present embodiment, the longitudinal groove planned portion 20 is formed in the longitudinal direction LD at one edge portion of the decorative layer 14a in the width direction WD and the longitudinal groove 20a extending in the longitudinal direction LD at the center portion in the width direction WD of the decorative layer 14a. It has a half groove 20b extending and a half groove 20c extending in the longitudinal direction LD at the other edge of the decorative layer 14a in the width direction WD. That is, the vertical groove planned portion 20 is a general term for a vertical groove and a half groove that are scheduled to form a vertical groove on a floor where construction is performed. The processed portion 22 includes an uneven surface 22a (hereinafter referred to as a processed surface 22a) provided between the vertical groove 20a and the half groove 20b, and an uneven surface 22b (hereinafter referred to as a processed surface 22b) provided between the vertical groove 20a and the half groove 20c. , Referred to as a processed surface 22b).

  Referring to FIG. 4, the planned longitudinal groove portion 20 (specifically, the longitudinal groove 20 a and the half grooves 20 b and 20 c) is convex toward the outside of the flooring 10 in a cross section perpendicular to the longitudinal direction LD. It has the curved surface which curves like this. That is, the vertical groove 20a and the half grooves 20b and 20c are each formed as a so-called R groove. The half groove 20b (half groove 20c) is formed by joining the plurality of flooring materials 10 to each other to form a floor (not shown). A vertical groove similar to the vertical groove 20a is formed in combination with the half groove 20b).

  The maximum depth of the planned longitudinal groove 20 (depth in the thickness direction of the flooring 10) is, for example, 1.7 mm. The maximum depth of the planned longitudinal groove 20 is preferably smaller than the thickness t2 of the decorative layer 14a. That is, it is preferable that the longitudinal groove planned portion 20 does not reach the base material 12.

A plurality of recesses 24 are formed in each of the processed surface 22a and the processed surface 22b. The plurality of recesses 24 can be formed by performing uneven processing such as brushing or blasting on the entire surface of the decorative layer 14a. The maximum depth of the plurality of recesses 24 (depth in the thickness direction of the flooring 10) is 1/3 or less, and preferably 1/4 or less, of the maximum depth of the longitudinal groove planned portion 20. Referring to FIG. 3, the processing unit 22, in 100 cm ² field of view of the region 26 that is arbitrarily defined in a plan view, it is preferable to have a recess 24 or more 0.2 mm 5 or more depths. In the example shown in FIG. 3, a square region 26 (area: 100 cm ² ) having a side length of 10 cm is assumed, and the number of recesses 24 having a depth of 0.2 mm or more is measured. In the case of flooring in which the interval between the longitudinal groove planned portions is less than 10 cm, the depth is assumed to be a rectangular region having a width direction as wide as possible and an area of 100 cm ² except for the longitudinal groove planned portion. What is necessary is just to measure the number of the recessed parts 24 with 0.2 mm or more. The maximum depth of the plurality of recesses 24 is preferably 0.80 mm or less. The maximum depth of the recess 24 is preferably 0.70 mm or less, and more preferably 0.60 mm or less.

  In addition, the depth of the recessed part 24 can be measured as follows. With reference to FIG. 3, the unevenness | corrugation of the position shown by AA in the surface 18 of the process part 22 is measured for every 5 mm range in the width direction WD with a laser displacement meter. In each measured range, the difference between the maximum height and the minimum height is defined as the depth of the recess 24. Therefore, in this embodiment, it is assumed that there is a recess 24 every 5 mm, and the depth of the recess 24 is measured every 5 mm.

(Other embodiments)
In the above-described embodiment, the case where the flooring 10 has the R-groove has been described, but the flooring may have a so-called V-groove, or may have a groove in which the V-groove and the R-groove are combined. Good. In the above-described embodiment, the case where the flooring does not have a lateral groove has been described, but the flooring may have one or a plurality of lateral grooves. In the above-described embodiment, the case where the flooring 10 has the vertical groove 20a has been described. However, the floor material 10 may not have the vertical groove 20a. That is, the planned longitudinal groove may have only the half grooves 20b and 20c. In the above-described embodiment, the case where the vertical groove planned portion 20 has one vertical groove 20a has been described, but the vertical groove planned portion may include a plurality of vertical grooves. In the flooring 10, a dividing groove for dividing the decorative layer 14a may be provided at the bottom of the vertical groove 20a. Although the above-mentioned embodiment demonstrated the case where the flooring 10 was provided with the actual fruit which has the male fruit 16a and the female fruit 16b, an actual structure is not limited to the above-mentioned example. For example, a plurality of flooring materials may be joined by means of a peanut. Moreover, the flooring may not have fruit. In this case, a plurality of floor materials may be butt-joined.

  According to the present invention, when coloring a flooring provided with a decorative layer having a thickness of 1.0 mm or more on at least a surface layer, blowback does not occur during drying, and uniform coloring can be performed.

DESCRIPTION OF SYMBOLS 10 Flooring material 12 Base material 12a, 12b, 12c, 12d Side surface 14a Decorative layer 14b Painting layer 16a Male 16b Female fruit 18 Surface 20 Longitudinal groove 20a Recess 26 Area 30 Base material 40 for floor Forward rotation brush roll 41 Reverse rotation brush roll 42 Contact surface

Claims (7)

The manufacturing method of a flooring provided with the process of following (1)-(5).
(1) The process of obtaining the base material for floors provided with the decorative layer of thickness 1.0mm or more in the surface layer at least,
(2) a step of forming a longitudinal groove planned portion on the surface of the decorative layer;
(3) A step of applying a colored paint to the surface of the decorative layer on which the longitudinal groove planned portion is formed,
(4) a step of bringing a brush roll into contact with the colored paint surface, and
(5) A step of curing the colored paint remaining on the surface of the decorative layer. Before the step (3),
Providing the surface of the decorative layer with irregularities and forming a plurality of recesses having a depth of 0.20 mm or more,
The manufacturing method of the flooring material of Claim 1. In the step (3),
Use solvent-free UV curable paint,
The manufacturing method of the flooring material of Claim 1 or 2. In the step (4),
After bringing the brush roll in which the moving direction of the brush on the contact surface is the same as the conveying direction of the floor substrate into contact with the colored paint surface, the moving direction of the brush on the contacting surface is the conveying direction of the floor substrate. A brush roll that is opposite to the above, and contacting the colored paint surface,
The manufacturing method of the flooring material in any one of Claim 1 to 3. In the step (4),
As the brush roll, a brush roll whose outer diameter is 0.1 to 1.0 mm is used.
The manufacturing method of the flooring material in any one of Claim 1 to 4. In the step (4),
As the brush roll, a brush roll having a hair material length of 30.0 to 60.0 mm is used.
The manufacturing method of the flooring material in any one of Claim 1-5. In the step (4),
When the distance from the rotation axis center of the brush roll to the hair tip is D1, the shortest distance from the rotation axis center to the contact surface is D2, and the difference D1-D2 is D, the length of the hair material The manufacturing method of the flooring material in any one of Claim 1-6 which arrange | positions a brush roll in the position used as 4D-10D.

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