JP3078593B2 - Woodgrain decorative sheet and woodgrain decorative material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet and a decorative material.

[0002]

2. Description of the Related Art Conventionally, a woodgrain decorative sheet formed by printing a pattern of a woodgrain conduit on the surface of a base material sheet has been used for the purpose of giving a real wood texture to the surface of building materials, furniture and the like. In order to obtain a more realistic woodgrain pattern, a woodgrain decorative sheet in which a woodgrain conduit pattern is formed as an uneven pattern on the surface of a base sheet is known.

Conventionally, as a method for producing the woodgrain decorative sheet, a method for forming a concave portion of a conduit by printing, or a method for forming a convex portion on a portion corresponding to the concave portion of a woodgrain conduit to a plastic sheet, etc. A method of forming a concavo-convex pattern on a conduit by heating and pressing has been used.

[0004] For example, as a method of forming a wood grain conduit pattern by printing, there is a method called a repelling conduit method. First, a conduit part is printed using ink containing silicon, and then the entire surface is printed using ordinary ink. The portion printed with the previously printed silicone ink can be seen as a depression due to the repelling phenomenon without ink being applied only to the conduit portion, and a wood grain conduit pattern can be formed.

In the method of manufacturing an embossing plate, for example, a resist pattern is formed on a copper plate or the like using a film obtained by photographing an actual wooden conduit pattern, and then the copper plate is etched to corrode unnecessary portions to form recesses. There is known a method of forming a concavo-convex pattern in which a convex portion is left as it is to form a roll emboss.

[0006]

However, in the conventional woodgrain decorative sheet, for example, in the case where a conduit pattern is formed by a repelling conduit method, the concave portion is not actually formed clearly but appears to be concave. It is said that
Further, it was very difficult to express gradation by changing the depth in the concave portion by the principle of repelling printing.

A woodgrain decorative sheet manufactured using a conventional embossing plate has a concave portion corresponding to a conduit, but the shape of the interior of the conduit is geometrically and unnaturally formed. Since there is no change in depth like the actual conduit (a state deeper from the inside of the recess toward the inside) and flat, and thus the recess of the conduit has a monotonous shape, the cutting of the actual tree The surface was not sufficiently realistic.

In other words, the conventional woodgrain decorative sheet simply looks like a concave portion is formed, or the concave portion is simply represented as a simple concave portion. There has never been a realistic reproduction of changes in internal depth.

The present invention is intended to solve the above-mentioned drawbacks of the prior art, and provides a decorative sheet and a decorative material in which irregularities very similar to a pipe pattern of a cut surface of a real tree are realistically expressed. The purpose is to do.

[0010]

SUMMARY OF THE INVENTION The present invention provides (1) a decorative sheet formed by forming a concave portion having a wood grain conduit pattern at least on the surface of a base sheet, wherein the concave portion of the wood grain conduit pattern is formed so as to face inward. A wood-grained decorative sheet having two or more steps that become lower, wherein the quadrant inside the recess forming the step of the recess of the wood grain conduit pattern is rounded; (2) at least a plate-like base A decorative material comprising a laminate of a material and a resin layer, wherein a concave portion of a wood grain conduit pattern is formed on the surface of the resin layer, wherein the concave portion of the wood grain conduit pattern decreases inward toward the interior, at least two steps. And a wood-grained decorative material, characterized in that the corners inside the recesses forming the steps of the recesses of the wood grain conduit pattern are rounded.

In the present invention, the term “conduit” refers to a group of cells that control the water-conducting action in a tree. Typically, a large number of cylindrical or similar cells (conduit elements) are continuously connected in the axial direction. It forms a tubular structure of undefined length with segments, and each cell has lost almost all or part of the junction wall in the axial direction. The connection portion is called a perforated plate, and the portion of the hole that has disappeared is called a perforated plate. Perforations include single perforations and step perforations,
There are porous perforations such as reticulated perforations and ephemeral perforations.
In addition, the cross-sectional shape of the conduit often shows an elliptical shape that is long in the radial direction, and is rarely a perfect circle. Also, the diameter of the conduit may differ depending on the type of tree, and even between the same species.

[0012] The above-mentioned conduits differ greatly in their constituent elements depending on the tree species, and in particular, in the case of hardwood, the elements vary greatly depending on the tree species. For example, as an example of the component, when the tree species is Mizunara, the diameter of the conduit is about 100 to 300 μm (the number of distribution is 4 to 9 mm ² ), the perforation is a single perforation, the length is 0.3 to 0.5 mm, and the wall is The thickness is about 2.5 to 4 μm.

The decorative sheet of the present invention can be obtained by shaping the following embossed pattern of the second embossing plate. Further, the decorative material of the present invention can be obtained by surface shaping the uneven pattern of the following shaping film. The shaping film can be obtained by providing an uneven pattern formed on the surface using the first embossing plate described below.

In the first embossing plate, in the embossing plate in which a concave portion corresponding to a conduit portion of a wood grain conduit pattern is formed, a film in which the conduit portion is expressed as a white field or a black field was formed, and a resist layer was formed. Using the film as a mask, a resist pattern is formed and etched on the embossing plate precursor to form a concave portion corresponding to the conduit portion, and further, a film is formed in which the size of the contour of the conduit portion of the film is changed, and the concave portion is formed. After the resist pattern is formed on the embossed plate on which the contour is formed so that the contour of the conduit is different, etching is performed so that the depth of the concave portion corresponding to the conduit becomes deep inside the conduit.

In the embossing plate, a plurality of films having different contour sizes of the conduit portion are prepared, and the formation and etching of the resist pattern are repeated by the number of the films to obtain the depth of the concave portion corresponding to the conduit portion. May be formed in three or more stages.

In the second embossing plate, a film in which the conduit portion is expressed as a white field or a black field is formed in the embossing plate having a convex portion corresponding to the conduit portion of the wood grain conduit pattern, and a resist layer is formed. Using the film as a mask, a resist pattern is formed and etched on the embossed plate precursor to form convex portions corresponding to the conduit portion, and further, a film is formed in which the size of the contour of the conduit portion of the film is changed, A resist pattern is formed on the embossed plate on which the convex portions are formed so that the contours of the conduit portions are different from each other, and then etching is performed, and the height of the convex portions corresponding to the conduit portions is formed such that the inside of the conduit becomes higher. It is.

Further, in the embossing plate, a plurality of films in which the size of the contour of the conduit portion is changed are formed, and the formation and etching of the resist pattern are repeated by the number of the films, so that the height of the convex portion corresponding to the conduit portion is increased. May be formed in three or more stages.

Hereinafter, the present invention will be described in more detail with reference to the drawings. The drawings show one embodiment of the present invention, FIG. 1 is a plan view showing an example of a film used for producing a concave embossing plate, and FIG. 2 is an explanatory view showing a cross section of an embossing plate in a production process of the concave embossing plate. It is.

As shown in FIG. 2B, the embossing plate 1 is provided with a concave portion 2 corresponding to a wood grain conduit pattern, and the concave portion 2 is formed so that the inside of the conduit becomes deeper. (Recessed embossed version).

The concave portion 2 of the concave embossing plate 1 may have the shape of the above-described conduit, and the width, length, depth, etc. of the concave portion 2 can be formed according to the conduit shape. As a material of the embossing plate 1, a metal plate such as zinc, copper, brass, aluminum, iron, stainless steel, and chromium can be used, and among them, copper is preferable. The thickness of the embossing plate is 1 for a flat embossing plate.
２2 mm, preferably about 200 μm for a roll embossing plate (depending on the depth of embossing), and a roll embossing plate having a shape obtained by winding the above embossing plate around an iron core is usually used.

Next, a method of manufacturing the above-described concave embossing plate 1 will be described. First, as shown in FIG. 1 (a), a film 3a representing a thinner conduit than the photographed conduit portion is prepared by photographing a desired grain conduit portion and photographing the conduit portion as a black field 5 and setting the other part as a white field 6 as shown in FIG. I do. Further, as shown in FIG. 3B, a film 3b having a black field 7 in which the contour of the conduit portion is formed larger than that of the photographed conduit portion is created.

Next, the first etching is performed. After using the film 3a on which the black field 5 having the smaller contour is formed as a mask as a mask, exposing and developing the embossing plate precursor 4 having a resist layer formed on the surface thereof to form a resist pattern other than the conduit portion Then, etching is performed to form a concave portion 8 having a depth A corresponding to the conduit portion of the film [FIG. 2 (a)].

Next, a second etching is performed. First, the resist pattern is formed by using the film 3b having the thick black area 7 as a mask and forming the embossed plate 4
A resist layer is formed on the surface of the substrate, exposed and developed, and a resist pattern is formed in a portion other than the conduit portion so that the contour of the conduit portion becomes thicker than the pattern formed at the time of the first etching. After forming the resist pattern, FIG.
As shown in (b), the depth A of the recess 8 (portion indicated by the dotted line)
Then, etching is further performed to the depth B, and the etching is performed up to the depth C together with the first etching to form the concave portion 2 and the concave embossing plate 1 is obtained.

The above-mentioned films having different sizes of the conduit portion are not limited to two types (small conduits and thick conduits), and two or more films having different conduit sizes are prepared. The formation and etching of the resist pattern may be repeated according to the conditions described above, and the depth of the concave portion may be changed stepwise according to the number of films. Further, the above-mentioned order is not limited to the formation of the thin conduit to the formation of the thick conduit, and conversely, the narrow conduit may be formed after the formation of the thick conduit.

In the above-described manufacturing method, first, a resist pattern corresponding to the conduit portion is formed and etched to form a concave portion. Further, a film obtained by changing the contour of the conduit portion of the film is used as a mask, and the contour of the conduit portion is used. It is important to perform so-called two- or more-stage corrosion in which etching is performed by forming the resist pattern differently from the previous resist pattern.

That is, in the case of only one-stage etching, the shape of the concave portion is a simple shape in which the bottom surface is planar and there is no change in the depth, but the second etching is performed with respect to the previous resist pattern. Is formed differently and the embossing plate original is corroded, the first etching depth A
The boundary between the two different depths, ie, the second etching depth B and the second etching depth B, is also rounded as shown in FIG. . By forming the recess in this way, the depth of the recess (conduit portion) is changed, and furthermore, a step pattern does not clearly appear at the gradually changing depth, so that a conduit pattern giving an extremely natural impression is expressed. can do.

The size of the conduit portion of the film 3 used as a mask in the above process is, for example, when two films are prepared as described above, the thick conduit portion usually has a width of 0.1 to 1 m.
m, a length of 1 to 50 mm is usually used, preferably a width of 0.1 to 0.4 mm and a length of 10 to 30 mm, and a narrow conduit portion is usually used for a width of 0.1 to 1 mm and a length of 1 to 50 mm. And preferably 0.05 to 0.3 mm in width and 1 to 1 in length.
50 mm.

The white field of the film 3 is a light-transmitting part when the resist layer is exposed, and the black field is a part of a light-shielding part. The concave part of the conduit part expressed by a white field is called a negative film. The concave portion represented by a black field is called a positive film. In the above description, the conduit portion of the film 3 (the portion that becomes a concave portion in the embossing plate) is formed as a black field (positive film), but a film in which the black field and the white field are reversed (negative film) may be used. Good. The selection of the positive or negative of the film 3 is appropriately made in combination with a resist described later. As the film 3, a normal plate making film or the like can be used.

The conduit pattern of the film 3 can be formed by means such as handwriting or film processing based on an enlarged photograph of the inside of the conduit.

The material for forming the resist layer is not particularly limited, such as a negative type or a positive type, and may be used according to the type of the negative or positive film. For example, as shown in the figure,
When a positive film is used for the film used as the mask, a negative type resist is used. When a negative film is used as the film, a positive type resist is used.
Incidentally, the positive type in the resist material means that the light-irradiated portion is decomposed, and the unirradiated portion remains by development to form a pattern. In the negative type, the non-irradiated portion remains in an uncrosslinked state. The portion irradiated with light is crosslinked to form a pattern by development. The negative type resist material includes a cyclic rubber type and a polyvinyl cinnamate type, and the positive type resist material includes a novolak resin-o-quinone azide compound as a base.

The etching solution used for etching is as follows:
What can corrode the portion of the embossed plate master where the resist pattern is not formed may be appropriately selected according to the type of the metal plate. For example, as an etchant,
Dilute nitric acid when the metal plate is zinc, ferric chloride for copper, nitric acid or ferric chloride for brass, ferric chloride or sodium hydroxide for aluminum, ferric chloride for iron or stainless steel Are usually used.

The embossed plate after etching can be used as it is by peeling off the resist layer. However, if necessary, a hard metal layer such as chromium may be formed on the surface by plating or vapor deposition to form an embossed plate. The durability of the plate can be improved. Further, in the present invention, the embossing plate can be formed in either a sheet shape or a roll shape. When the embossing plate is formed in a roll shape, there is an advantage that productivity of a molded film described later is improved.

Although the above description has been made with respect to a concave embossing plate in which a conduit pattern is formed as a concave portion, an embossing plate (a convex embossing plate) in which a conduit pattern is formed as a convex portion may be used. FIG. 3 is a plan view showing an example of a film used for manufacturing the convex embossing plate, and FIG. 4 is an explanatory diagram showing a cross section of the embossing plate in a manufacturing process of the convex embossing plate.

As shown in FIG. 4 (b), the convex embossing plate 11 is provided with a convex portion 12 corresponding to a conduit portion having a wood grain conduit pattern, and the convex portion 12 is formed such that the inside of the conduit becomes higher. Is what is being done. In order to manufacture the convex embossing plate 11, first, as shown in FIG. 3A, a desired grain conduit portion is photographed, and the conduit portion is set to a white field 15 and the other portions are set to black fields 16 from the photographed conduit. A negative film 13a expressing a thick conduit portion is created. Further, as shown in FIG. 3B, a film 13b is formed in which a white field 17 in which the outline of the white field 15 in the conduit portion is formed small is formed.

Next, the first etching is performed. After the negative film 13a is used as a mask, the negative resist layer is exposed on the embossing plate precursor 14 formed on the surface and developed to form a resist pattern on the conduit portion,
Etching is performed to form a convex portion 18 having a height D corresponding to the conduit portion of the film [FIG. 4 (a)].

Next, a second etching is performed. First, the formation of a resist pattern was performed using a white field 1 having a thinned conduit portion.
7 is used as a mask, and the convex portions 18 are used as masks.
A negative resist layer is provided on the surface of the embossing plate precursor 14 on which the resist pattern is formed, exposed and developed, and the resist pattern is formed on the convex portion 18 of the conduit portion so that the contour of the conduit portion becomes thinner than the first pattern. Formed. After the resist pattern is formed, etching is performed to corrode the portions other than the conduit portion from the height D of the convex portion to the height E as shown in FIG.
The etching is performed until the height of the convex portion becomes F in conjunction with the second etching, and the convex portion 12 is formed to obtain the convex embossing plate 11.

It is to be noted that not only two types of films having the outline of the conduit portion formed thinner and thicker than the film used as the mask are used, and two or more films having different conduit sizes are prepared. The formation and etching of the resist pattern may be repeated according to the film, and the height of the projection may be changed stepwise according to the number of films. Further, the above-described order is not limited to forming a thick conduit portion after forming a thick conduit portion first, and conversely, a thick conduit portion may be formed after forming a thin conduit portion.

Further, whether to use a negative type or a positive type as the film and the resist material used as the mask is not particularly limited as in the case of the concave embossing plate, and can be appropriately selected. For example, as shown in FIG. 3, when a negative film is used as a film used as a mask, a negative resist may be used, and when a positive film is used, a positive resist may be used.

The material and manufacturing method of the convex embossing plate 11 are the same as those of the resist embossing plate except that a resist pattern is formed on a conduit portion, an unnecessary portion is etched away, and the conduit portion is formed as a convex portion. The same materials as those of the concave embossing plate shown in FIGS. 1 and 2 are used as the material, the material and the forming method of the film, and the material of the etching solution.

In the production of the convex embossing plate, similarly to the case of the concave embossing plate, the etching is performed in two stages, so that the second etching is applied to the convex portion formed by the first etching. A resist pattern is formed on the conduit portion so as to have a different contour using a mask with a different contour, so that the interior of the convex portion is formed to be higher by the second etching, and the two convex portions are formed. As shown in FIG. 4 (b), the boundary of the height is rounded without forming a distinct step due to the nature of the etching, so that the natural concave portion of the actual wooden conduit pattern (the inside of the conduit) Is deeper and the periphery is shallower). Further, by forming a film in which the thickness of the contour of the conduit portion is changed and performing a plurality of resist pattern formations and etchings, the shape of the convex portion can be a more natural convex portion corresponding to the concave portion.

FIG. 5 is a sectional view showing an example of a decorative sheet manufactured using a convex embossing plate. As shown in FIG. 5, the decorative sheet 27 of the present invention has a concave portion 26 having two or more steps in which the concave portion of the wood grain conduit pattern becomes lower toward the inside so that the concave portion 26 is shaped by the convex embossing plate. To have. In order to manufacture a decorative sheet from the convex embossing plate, the base sheet is brought into contact with the embossing plate under heat and pressure by using the convex embossing plate 11 as shown in FIG. On the surface of the material sheet 25, the concave and convex pattern of the embossing plate is formed to form a concave portion 26 of a wood grain conduit pattern.
Is obtained on the surface.

As the material of the base sheet 25, those which are usually used as the base sheet of this kind of decorative sheet can be used, and for example, thermoplastic resin sheets such as polyvinyl chloride, polyethylene, and polypropylene are preferable. Although the thickness is not particularly limited, it is usually 10 to 300 μm.
m, preferably 10 to 100 μm.

The decorative sheet can be formed only by the base sheet 25 in which the concave portions 26 are formed as described above. However, the base sheet 27 may be provided with a printed layer, the concave portions may be painted pink, or the decorative sheet may be coated. You may laminate | stack on base materials, such as paper and a plywood.

Further, in the same manner as in the case where a decorative material is produced from a shaped film, the convex embossing plate is used to remove the uneven pattern of the embossing plate when the resin is cured during the production of a thermosetting resin decorative plate. It can also be used as a shaping mold for shaping on the surface of a plate.

FIG. 6 is a cross-sectional view showing a shaped film manufactured using a concave embossing plate, and FIG. 7 is a cross-sectional view of a decorative material manufactured using the shaped film.

Next, a method for producing a shaped film using the embossing plate will be described. FIG. 6 is a sectional view of a molding film manufactured using the embossing plate 1. As shown in FIG. 6, in order to manufacture the shaped film 22, the embossing plate 1 shown in FIG. 2 is heated and pressed on the surface of the base material obtained by laminating the plastic sheet 20 on the surface of the base sheet 21. The shaped film 22 having the convex portions 24 corresponding to the conduit portions having the wood-grain conduit pattern is obtained.

FIG. 6 shows an example of a shaped film used for producing a polyester decorative plywood. The plastic sheet 20 is made of a polyolefin such as polypropylene or polyethylene, or a thermoplastic resin such as polyethylene vinyl alcohol, polyvinyl chloride or acrylic. A general or ionizing radiation curable resin or the like is used, and its thickness is appropriately set according to the depth of the emboss to be processed. The surface of the plastic sheet 20 may be coated with a paint (for example, a material to which silicon, a fluorine-based resin, a wax, or the like is added) having releasability from a processing object.

As the base sheet 21, nylon, polyethylene terephthalate, polyacrylate, polyimide, polyether ether ketone, triacetyl cellulose, polycarbonate, polyacetal, polytetrafluoroethylene, polyvinyl alcohol, cellophane, non-plasticized polyvinyl chloride, Thickness of plastic film such as polyvinylidene chloride, or paper with high uniformity and high surface smoothness such as glassine paper, parchment paper, tracing paper, transcript cardboard, parchment paper, coated paper, art paper, etc.
Those having a thickness of 250 μm, preferably 12 to 100 μm can be used.

It should be noted that the base sheet 21 is
When used in the production of thermosetting resin decorative board, when selecting a material having a higher heat deformation temperature than the sheet 20 in order to prevent deformation of the plastic sheet 20 and the like, when using in the production of a wet unsaturated polyester decorative board, It is preferable to use a material having a higher oxygen permeability than the plastic sheet.

Plastic sheet 20 and base sheet 21
As a method of laminating, it is possible to use dry lamination, wet lamination, extrusion coating of a polyolefin-based resin, so-called doubling embossing and the like, which are simultaneously fused by hot pressing with hot pressing.

The configuration of the shaping film 22 can be changed according to the application, and it may be composed of one sheet made of the material used for the sheet 20 or 21.

FIG. 7 is a longitudinal sectional view showing one example of a woodgrain decorative material. As shown in FIG. 7, the decorative material 31 of the present invention has a concave portion 32 formed on the surface using the above-described forming film 22, and a concave portion 32 corresponding to a wood grain conduit is provided in a resin layer 33, The resin layer 33 has a configuration in which the resin layer 33 is sequentially laminated on a plywood 37 via a decorative paper 35 provided with a printing layer 34 and an adhesive 36.

In order to manufacture the decorative material, the molding filler 22 is brought into contact with the surface of an uncured thermosetting resin or an ionizing radiation curable resin forming the resin layer 33, and is cured. By peeling the mold film 22, a resin layer having a conduit pattern on the surface is obtained.

The resin layer 33 is preferably made of a wet unsaturated polyester resin, and its thickness is not particularly limited, but is usually 10 to 300 μm, preferably 10 to 100 μm.

The printing layer 34 is a layer on which a wood pattern such as natural wood is subjected to solid printing such as pattern printing or coloring. The printing layer 34 is formed by printing on the surface of a base material such as decorative paper using ordinary printing ink.
As the printing ink, those obtained by adding a coloring agent, a plasticizer, and the like to a vehicle such as a thermoplastic resin such as an acrylic resin, a thermosetting resin such as an epoxy resin, or an ionizing radiation-curable resin can be used. The printing method is gravure printing, flexo printing,
Silk screen printing or the like is used. For example, if this printed pattern and the concavo-convex pattern corresponding to the above-described conduit are properly synchronized, a more realistic wooden texture can be reproduced.

As the adhesive 29, known adhesives used for dry lamination and the like can be used, and examples thereof include vinyl acetate emulsions, acrylic adhesives, and urethane adhesives.

In place of the plywood 30, papers such as thin paper, bleached kraft paper, paperboard, wood base materials such as plywood and particle board, gypsum base materials such as gypsum board, metal plates such as iron plate and galvanized steel plate. Etc. can also be used. Further, in order to achieve a realistic wood grain, the concave portion of the conduit may be subjected to wiping, and the concave and convex pattern in the concave portion may be filled with wiping ink.

[0058]

[Manufacture of concave embossing plate]

Only the conduit is photographed from the wood grain document, and a positive film of a conduit thinner than the photographed conduit as shown in FIG. 1 (a) and a boji film of a thick conduit as shown in FIG. 1 (b) are prepared. Next, the above-mentioned film (a) is placed on a copper plate and corroded until the plate depth reaches 30 μm. Further, the film is brought into register with the copper plate, and the film of (b) is placed thereon, and is corroded by 60 μm (total 90 μm). As a result, the cross-sectional shape changed gradually, and a concave embossed plate close to a real wooden conduit was obtained.

[Manufacture of convex embossing plate] Only a conduit is photographed from a grained original, and a positive film of a conduit slightly thicker than the photographed conduit as shown in FIG. 3A and a thin film as shown in FIG. Create a Boji film for the conduit. Next, the film of (a) is placed on a copper plate and corroded until the plate depth reaches 20 μm. Further, the film is put into register with the copper plate and the film of (b) is put on the copper plate and corroded by 30 μm (total 50 μm). As a result, a cross-sectional shape was gradually changed, and a convex embossing plate close to a real wooden conduit was obtained.

[Manufacture of Shaped Film] Using the above concave embossing plate, the vinylon surface of a composite film obtained by dry-laminating a 25 μm-thick vinylon and a 200 μm-thick vinyl chloride sheet at 170 ° C., 50k
Embossing was performed under the conditions of g / cm ² and a heat pressure of 10 m / min to obtain a shaped film for a polyester resin decorative board.

[Production of decorative sheet] Using the above-mentioned convex embossing plate, embossing was performed on the surface of the vinyl chloride resin sheet on which the wood grain printing was performed (the embossing conditions were a drum temperature of 170 ° C, 30 kg / cm ² , 40).
m / min), the concave portion of the sheet was wiped.
In the obtained decorative sheet, the inside depth of the concave portion corresponding to the conduit was deep, the cross-sectional shape was smooth, and a sheet having a design property close to that of a real conduit was obtained.

[Production of Cosmetic Material] Decorative paper printed on plywood (Kojin: “PM” 80 g /
m ² ) using an adhesive, and a polyester resin (Estar-D, manufactured by Mitsui Toatsu Chemicals) on the surface of the laminate on the decorative paper side.
771B) and a resin obtained by adding 0.5% by weight of a curing agent (manufactured by NOF CORPORATION: Permec N) to a coating amount of 300 g / m ² , and curing in a state where the above-described shaped film is overlaid on the surface of the resin. After the resin was cured, the shaped film was peeled off, and then the recess was wiped to obtain a woodgrain-like decorative material.

In the obtained decorative material, the depth in the concave portion corresponding to the conduit formed on the surface was changed spontaneously in a stepwise manner, and was similar to a real wooden texture.

[0064]

As described above, the woodgrain decorative sheet and the woodgrain decorative material of the present invention have two or more steps in which the concave portion of the woodgrain conduit pattern becomes lower toward the inside, and the concave portion of the woodgrain conduit pattern. Because the inside of the concave portion that forms the step is rounded, compared to a conventional concave portion having a simple cross-sectional square shape and a bottom portion formed in a plane, the real wooden conduit portion is It has a natural shape very similar to a concave portion, and the inside of the concave portion changes smoothly, and has an excellent design similar to a real wood.

[0065]

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a film used for manufacturing a concave embossing plate.

FIG. 2 is an explanatory diagram showing a cross section of an embossing plate in a concave embossing plate manufacturing process.

FIG. 3 is a plan view showing an example of a film used for manufacturing a convex embossing plate.

FIG. 4 is an explanatory diagram showing a cross section of an embossing plate in a convex embossing plate manufacturing process.

FIG. 5 is a partial sectional view showing one example of a decorative sheet.

FIG. 6 is a sectional view of a main part showing an example of a shaped film.

FIG. 7 is a sectional view of a main part showing an example of a decorative material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concave embossed plate 2 Concave part 3 Film 5 Black field 6 White field 7 Black field with large contour of conduit part 11 Convex embossed plate 12 Convex part 13 Film 15 White field 16 Black field 17 White with small contour of conduit part Place 22 Shaped film 27 Decorative sheet. 31 Cosmetic materials

Continuation of the front page (56) References JP-A-50-37837 (JP, A) JP-A-54-19438 (JP, A) JP-A-4-140750 (JP, A) JP-A-57-185979 (JP) JP-A-49-33836 (JP, A) JP-A-1-247580 (JP, A) JP-A-47-32498 (JP, U) JP-A-57-38366 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B44C 1/22 B44C 1/24 B44C 3/02

Claims (2)

(57) [Claims] 1. A decorative sheet formed by forming a concave portion of a wood grain conduit pattern on at least the surface of a base material sheet, wherein the concave portion of the wood grain conduit pattern has two or more steps that decrease inward, wood flaps of the inner recess that constitutes a step of the recess of the tree first vessel pattern is characterized in that it rounded
Tone makeup sheet. 2. A decorative material comprising at least a plate-like base material and a resin layer laminated on each other, and forming a concave portion having a wood grain conduit pattern on the surface of the resin layer, wherein the concave portion having the wood grain conduit pattern has a concave portion therein. A woodgrain-like decorative material, which has two or more steps which become lower toward the bottom, and wherein the corners inside the recesses forming the steps of the recesses of the woodgrain conduit pattern are rounded.