JP2992066B2 - Cosmetic material, method for producing the cosmetic material, and embossing plate used for producing the cosmetic material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a decorative material having a natural shine, a method for producing the decorative material, and an embossing plate used for producing the decorative material.

[Conventional technology]

Conventionally, embossing is applied to the surface of base materials such as plastic sheets for the purpose of improving decorativeness by pasting it on the surface of interior materials such as decorative boxes, wallpapers, flooring, etc. of products, furniture, furniture, home appliances, etc. Coating materials that have been subjected to printing or printing to impart various designs have been used.

Among various designs, decorative materials formed by printing a wood grain pattern are widely used as plastic materials and plywood surfaces to make the material look like natural wood and greatly enhance the decorativeness. Have been.

Conventionally, in order to make this grain pattern look like a real tree, for example, a transparent resin layer is provided under the wood grain print layer, the wood grain pattern is raised and printed to give a three-dimensional effect, and a hairline embossed on the surface What expressed the feeling of fiber of the installation wood was proposed.

Then, in order to improve the texture by illuminating the front surface, a fine uneven pattern is further provided on the back surface side of the thermoplastic resin sheet, and the width of the concave portion and the convex portion is 1 to 1000 μm or a parallel straight line group or a continuous curve. There has been proposed a decorative material provided with a group or a fine uneven pattern composed of the above-mentioned parallel straight line group and curve group, and the reflected light changes depending on the viewing direction to obtain a three-dimensional effect (Japanese Patent Application No. Hei 1-206449). ).

[Problems to be solved by the invention]

However, in the above-mentioned conventional decorative material, since the uneven pattern is formed by the parallel line group in both the straight line group and the curve group, that is, the pitch between each line is uniform and the geometric pitch is obtained, and thus it is obtained. There has been a problem that the illuminance of the sheet surface becomes regular, and the texture of the random and irregular surface, which is a characteristic of natural materials, cannot be obtained.

Therefore, in the conventional wood grain decorative material, the appearance of the wood grain is artificial compared with the natural wood, and there is a problem that the texture is unnatural unlike the texture of the natural wood.

In the case of manufacturing a decorative material, a conventional decorative material is manufactured using an embossing plate having an uneven pattern composed of a group of parallel lines as described above. High precision is required for accuracy,
A laborious operation was required.

Further, it was not possible to produce a decorative material having a natural shimmer from a conventional embossing plate.

The present invention has been made in view of the above points, and solves the above-mentioned drawbacks of the prior art, and provides a cosmetic material having a shining appearance such as a natural material, a method of manufacturing the cosmetic material, and a method of manufacturing the cosmetic material. It is intended to provide an embossing plate to be used.

[Means for solving the problem]

The present invention relates to a decorative material having an embossed sheet provided with a groove-like uneven pattern formed of a group of wave-like curves in which the width of a concave portion and a convex portion is 1 to 1000 μm on at least the front surface and / or the back surface of a thermoplastic resin sheet. This is a decorative material having a natural illuminance consisting of curves in which the wave-like curve group is composed of function curves and the function parameters of each curve are sequentially changed so that the interval between the curves changes smoothly in the linear direction.

Further, in the decorative material of the present invention, the width of the concave portion and the convex portion is at least 1 to 1000 μm on the front surface and / or the back surface of the thermoplastic resin sheet.
In a decorative material having an embossed sheet provided with a groove-like uneven pattern consisting of a wave-like curve group, the wave-like curve group consists of function curves, and the function parameters of each curve are sequentially changed so that the intervals between the curves are linear. A curve formed from curves formed so as to change smoothly in the direction, and a wave-like curve group consisting of the above-mentioned function curve and a wave-like curve group consisting of the same or different function curves superimposed on the wave-like curve group so as to intersect the curve It is formed from groups and has a natural shine.

Further, in the above-described decorative material, when the curve group is a sine wave function curve, and the amplitude is A, the wavelength is λ, and the phase is α, one or more of the function parameters of amplitude, wavelength, and phase are obtained. I of a curve represented by a formula obtained by dividing each difference of a wavelength difference, a phase difference, a period difference, and a Y coordinate difference between two sine wave curves represented by formulas and formulas having different Y-axis intercepts is 0, 1 ...
It is also possible to provide a decorative material composed of N + 1 curves shown when the transition is made to N-1, N.

Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N… Also, the above sine wave function curve group is obtained by changing all the function parameters such as amplitude, wavelength, phase and Y-axis intercept.
It can also be formed from N + 1 sine wave function curves in which the wavelength difference, the phase difference, the period difference, and the Y coordinate difference of the two sine wave function curves are equally divided into N and transitioned.

The present invention provides a method for manufacturing a decorative material having at least an embossed sheet, wherein a wave-like curve group consisting of curves formed such that the function parameters of the function curves are sequentially changed and the interval between the curves changes smoothly in the linear direction. Create a draft master, the width of the concave and convex portions from the master 1 to 1000
forming an embossed plate provided with a groove-shaped uneven pattern corresponding to a wave-shaped curve group that is μm, forming the embossed sheet by closely pressing the embossed plate against a thermoplastic resin sheet and transferring the groove-shaped uneven pattern. It is also a method for producing a decorative material, by giving natural illuminance to the sheet surface by a groove-like uneven pattern composed of a group of wavy curves.

Further, the method for manufacturing a decorative material of the present invention is the method for manufacturing a decorative material having at least an embossed sheet, wherein a curve formed such that a function parameter of a function curve is sequentially changed and an interval between the curves smoothly changes in a linear direction. And a curve group obtained by overlapping the wave-like curve group consisting of the same or different function curve with the wave-like curve group consisting of Forming an embossed plate provided with a groove-shaped uneven pattern corresponding to a wave-shaped curve group having a width of 1 to 1000 μm, and transferring the groove-shaped uneven pattern by closely pressing the embossed plate to a thermoplastic resin sheet. An embossed sheet is formed, and a groove-shaped concave and convex pattern formed by a wave-shaped curve group on the sheet surface and a curve group superimposed on the wave-shaped curve group to further intersect the wave-shaped curve group. By a method to impart a natural shine.

Further, when the above curve group is a sine wave function curve, and the amplitude is A, the wavelength is λ, and the phase is α, one or more of the function parameters such as amplitude, wavelength, and phase are different from the Y-axis intercept. Of two sinusoidal curves represented by the equation
From the (N + 1) curves shown when i of the curve represented by the equation obtained by dividing each difference of the wavelength difference, the phase difference, the period difference and the Y coordinate difference into N equals 0, 1,. The above-mentioned method for producing a decorative material can also be used.

Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N… Also, the above sine wave function curve group is obtained by changing all the function parameters such as amplitude, wavelength, phase and Y-axis intercept.
It can also be formed from N + 1 sine wave function curves in which the wavelength difference, the phase difference, the period difference, and the Y coordinate difference of the two sine wave function curves are equally divided into N and transitioned.

The present invention relates to an embossing plate provided with a groove-shaped uneven pattern formed by a wave-shaped curve group in which the width of the concave portion and the convex portion is 1 to 1000 μm, wherein the wave-shaped curve group is a function curve, and a function parameter of each curve is set. This is an embossing plate used for manufacturing a decorative material composed of curves that are sequentially changed and formed so that the interval between the curves changes smoothly in the linear direction.

Further, the embossing plate of the present invention, the width of the concave portion and the convex portion is 1 to 10
In an embossing plate provided with a groove-shaped uneven pattern composed of a group of wave-shaped curves of 00 μm, the groove-shaped uneven pattern is composed of function curves, and the function parameters of each curve are sequentially changed so that the intervals between the curves are smooth in the linear direction. And a curve group formed by overlapping a wave-like curve group composed of the same or different function curves so as to intersect with the wave-like curve group.

Further, when the above curve group is a sine wave function curve, and the amplitude is A, the wave amount is λ, and the phase is α, one or more of the function parameters such as amplitude, wavelength, and phase and the Y-axis intercept are Of two sinusoidal curves represented by different formulas and formulas,
From the (N + 1) curves shown when i of the curve represented by the equation obtained by dividing each difference of the wavelength difference, the phase difference, the period difference and the Y coordinate difference into N equals 0, 1,. It can also be formed.

Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N... The above sine wave function curve group is obtained by changing all the function parameters such as amplitude, wavelength, phase and Y-axis intercept.
It can also be formed from N + 1 sine wave function curves in which the wavelength difference, the phase difference, the period difference, and the Y coordinate difference of the two sine wave function curves are equally divided into N and transitioned.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the decorative material of the present invention,
As shown in the figure, the decorative material 1 of the present invention is a decorative material having an embossed sheet 4 provided with a groove-shaped uneven pattern 3 composed of a continuous wave-shaped curve group on the back side of a thermoplastic resin sheet 2, The uneven pattern 3 has the width of the concave portion as shown in FIG.
width d ₂ of d ₁ and the convex portion is formed in a range of 1 to 1000 m.

The wave-like curve group forming the above-mentioned groove-shaped uneven pattern 3 is composed of function curves, and the wave-like curve group is obtained by sequentially changing the function parameters of each curve so that the interval between adjacent curves is along the line direction. It is formed from smoothly changing curves.

Examples of such a function curve include a sine wave curve, a cycloid curve, an elliptic function curve, a Bessel function curve, a combination curve of arcs, and a combination of Nth-order curves. A preferred function curve is a sinusoidal curve.

FIG. 3 shows an example of a wave-like curve group using a sine wave curve. As shown in FIG. 3, a wave-like curve group 8 using a sine wave curve is composed of four curve groups of curve groups 11, 12, 13, and 14. When the amplitude is A, the wavelength is λ, and the phase is α, the first curve group 11 has two expressions in which the amplitude, wavelength, phase, and X coordinate are different from each other in the Y coordinate at an arbitrary point. I of a curve represented by a formula obtained by dividing each difference of the wavelength difference, phase difference, period difference and Y coordinate difference ΔY of the sine wave curves 15 and 16 into N equal parts
.., N−1, N.

Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N In the first curve group 11 formed as described above, the interval between the curves changes smoothly, and the region 19 where the interval between the curves is partially sparse and the region 19 which is densely gathered Is formed.

Further, a function parameter (amplitude, wavelength, phase, Y coordinate difference) is different from the curve 16 at the end of the curve group 11 in the same manner as described above by an equation obtained by dividing the function parameter into M equal parts. A second curve group 12 formed from M + 1 curves shown when i of the curved line is 0, 1,.
To form Hereinafter, similarly, the third curve group 13 and the fourth curve group can be formed to form the entire curve group 8.

The groove-shaped concave / convex pattern 3 formed by the above-mentioned line group is for producing an illuminated appearance, and in particular, plays a role of appearing illuminated by being moved depending on the viewing angle. That is, the groove-shaped uneven pattern 3 may be provided on the entire surface of the thermoplastic resin sheet when the shine extends over the entire surface of the decorative material, and may be provided only at a necessary portion of the support sheet when the shine is partial. .
As described above, in the present invention, the groove-shaped concavo-convex pattern 3 may be provided not only entirely but also partially.

In the present embodiment, as shown in FIG. 3, the wave-shaped curve is composed of a plurality of four curve groups. However, the decorative material of the present invention may be composed of only one curve group.

Further, in the present invention, as shown in FIG.
Can be formed from a wave-like curve group composed of the above-mentioned function curves and a curve group in which a wave-like curve composed of the function curves is further superimposed on the wave-like curve group so as to intersect. The two curve groups may be the same wave-like curve group or different wave-like curve groups. Further, the angle at which the wave-shaped curve groups intersect is not particularly limited, but it is necessary that they are not parallel.

The size of the groove-shaped uneven pattern 3 is such that the width of the concave portion and the convex portion is 1 to 1000.
If the width exceeds 1000 μm, each line group is conspicuous enough to identify each line, giving a geometrical texture, and it is difficult to reproduce natural materials such as grain of wood. Become. It is more preferable that the width of the concave portion and the convex portion is 5 to 100 μm from the viewpoint that a more natural illuminance is easily produced. The depth of the recess is usually about 1 to 100 μm, more preferably 5 to 35 μm. Furthermore, the depth of the concave portion is not a single one, but can be changed sequentially for each line or in the line direction according to the interval between the lines, so that a more subtlely changing illuminated appearance can be exhibited. .

The groove-shaped uneven pattern 3 may be provided on the front surface of the thermoplastic resin sheet 2 or on both the front surface and the back surface.
When the uneven pattern 3 is provided on the back surface, the thermoplastic resin sheet 2
It is necessary to use a transparent or translucent sheet to make the uneven pattern 3 visible from the surface side of the decorative material.

Thermoplastic resin sheet 2 used for embossed sheet 4
As a thermoplastic resin forming, for example, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate-vinyl chloride copolymer, polyvinyl fluoride, polyvinyl butyral,
Vinyl polymers such as polyvinylidene fluoride, styrene resins such as polystyrene, acrylic styrene, and ABS; acrylic resins such as polyethyl methacrylate, polymethyl methacrylate, and polyacrylonitrile; olefin resins such as polyethylene, polypropylene, and polymethylpentene , Cellulose acetate, cellulose derivatives such as nitrocellulose, polyamide resins such as nylon 6, nylon 66,
Polyethylene terephthalate, polyethylene terephthalate-isophthalate copolymer, polybutylene terephthalate, polyester resins such as polyacrylate, butadiene, rubber resins such as chloroprene rubber, vinylon,
Examples thereof include polyvinyl alcohol-based resins such as polyvinyl alcohol, and polycarbonate.

The thickness of the embossed sheet 4 is about 20 to 200 μm, preferably 50 to 100 μm. The sheet 4 may be colored as necessary. By applying this coloring, the color tone of the entire decorative sheet can be adjusted, and when the decorative sheet is used by being bonded to another substrate, the color, dirt, scratches, etc. of the substrate can be hidden.

The decorative material 1 of the present invention can be used alone with the embossed sheet 4 on which the groove-shaped uneven pattern 3 composed of the wave-like continuous curve group as described above is formed, but as shown in FIG. And a printing layer such as the entire printing layer 6 and the transparent resin layer 7.

The partial print layer 5 is a pattern print layer that reproduces a conduit pattern of natural wood or the like, and the full print layer 6 is a wood pattern using gloss or matte ink by a glossy ink solid layer, and the tone and gradation of the wood grain. Can be expressed.

These print layers are formed using an ink or paint obtained by adding a colorant, a plasticizer, and the like to a vehicle. Examples of the vehicle include polyvinyl chloride resin, acrylic resin, vinyl acetate resin, nitrocellulose, amino alkyd resin, butyral resin, cellulose derivatives such as nitrocellulose, acetylcellulose, ethylcellulose, benzylcellulose, phenolic resin, and urea. Resin, phthalic acid resin, maleic acid resin, melamine resin, polyvinyl acetate resin, polyvinyl chloride resin,
Acrylic resin, polyvinyl alcohol, polyvinyl butyral, epoxy resin, silicone resin, polyester resin, polyamide resin, polyurethane resin, other synthetic resins, or rubber derivatives such as chlorinated rubber, cyclized rubber, and synthetic rubber Can be used. Further, an ultraviolet-curable resin obtained by adding an ultraviolet-curing agent can also be used. As a printing method, gravure printing, flexographic printing, silk screen printing, or the like can be adopted.

For example, by forming a wood pattern printing and the groove-shaped concave / convex pattern 3 as appropriate as the partial print layer 5, a wood grain appearance in which a desired shine is generated can be exhibited.
In particular, in order to faithfully reproduce the shine of the straight-grained wood board, it is preferable that the flow direction of the grain of the grain pattern printing and the flow direction of the wavy curve of the groove-shaped uneven pattern 3 be substantially perpendicular to each other.

Examples of the transparent resin layer 7 include vinyl chloride, urethane,
A layer formed of a sheet made of an acrylic resin or an epoxy resin, and particularly made of a thermosetting resin such as a polyurethane resin or an epoxy resin, or an ultraviolet curable resin obtained by adding an ultraviolet curing agent. Sheet materials are preferred from the viewpoint of scratch resistance and stain resistance. The thickness of the transparent resin layer 7 is about 20 to 200 μm, preferably about 50 to 100 μm.

If necessary, the surface of the transparent resin layer 7 may be embossed with a wood grain conduit, and the embossed recesses may be subjected to a so-called wiping process of filling a coloring ink, or the conduit portion may be printed with matte ink. By making the matted state relatively as compared with the part, so-called gloss mat printing may be performed so that the conduit part is visually depressed.

Further, the decorative material 1 of the present invention can also impart a glittering appearance. As a means for imparting glitter, a thermoplastic synthetic resin sheet 2 in which a glitter pigment is kneaded and mixed with the embossed sheet 4 is used, or a glitter ink layer is formed by printing on the entire back surface or part of the thermoplastic resin sheet 2. It may be configured as such. Alternatively, a metal thin film layer may be formed on the entire surface or a part of the sheet 2. By providing the glitter, a cosmetic material with a more varied gloss can be obtained in combination with the groove-shaped uneven pattern 3.

As the above-mentioned brilliant pigment, metal powder, metal fragments, pigments having metallic luster, mica pigments, fish scale foil, pigments having pearl luster or interference luster can be used. In addition, as the glitter ink constituting the glitter ink layer, an ink obtained by adding the glitter pigment to a known vehicle is used. The glitter ink preferably contains a mica pigment in view of chemical stability such as acid resistance and alkali resistance.

Further, the metal thin film layer can be formed by a conventionally known plating method such as electrolytic plating, electroless plating and spray plating, or a coating method such as vacuum deposition and sputtering.
As these metals, any of the metals usually used in the above-described coating method can be used, and examples thereof include alloys such as tin, copper, nickel, cobalt, chromium, aluminum, silver, gold, zinc, or brass and stainless steel. Can be The thickness of the metal thin film layer is preferably 4 to 1000 °, and when the layer is provided by vapor deposition, a known anchor coating agent such as polyurethane or melamine may be applied in advance to further ensure the adhesion of the metal thin film layer. it can.

Next, a method for producing the decorative material of the present invention will be described. In manufacturing the decorative sheet 1 of the present invention, first, an original drawing is drawn in which a group of wave-like curves forming a desired groove-like uneven pattern 3 is drawn. To create an original drawing, an arbitrary curve is drawn on a base paper (paper, film, or the like) using a plotter to form a desired function curve into the above-described curve group.

Next, an embossing plate is manufactured from the original drawing drawn above. For the embossed plate, the original drawing is reduced as necessary, and a known photo-etching method, a method of engraving irregularities in a mill and etching the metal plate by a chemical milling method, a method of forming a resist from a photographic original plate and etching the metal plate, etc. An embossed pattern is formed on the embossed plate substrate by using the plate making method described above. As the embossing plate base material, a known metal plate such as a steel plate or a copper plate used for a conventional embossing plate base material, or a material such as an epoxy resin or a diallyl phthalate resin is used. The embossed plate may be in the form of a lithographic plate or a cylinder, or any shape.However, when a cylindrical one continuously forms an embossed sheet, the embossed plate is continuously embossed on the thermoplastic resin sheet while rotating the embossed sheet. It is preferable to form an embossed sheet to improve productivity.

Next, using the above-described embossing plate, a continuous groove-like concave-convex pattern is applied to the thermoplastic resin sheet to form an embossed sheet. The method of imparting a groove-like uneven pattern is conventionally known lithographic press, a variety of press machines such as a roll embossing machine is mounted with an embossed plate provided with a design, the softening temperature or heat deformation temperature and melting temperature of the thermoplastic resin sheet. Heated to an appropriate temperature between, and laminated so that the uneven pattern surface of the embossed plate matches the surface of the thermoplastic resin sheet,
The embossing plate which transfers the uneven pattern by mechanical pressure contact is pressed and shaped, and cooled to fix the shape of the uneven pattern.
As a heating method in this case, a known processing method such as infrared irradiation, hot air blowing, conduction heat from a heating roller, and dielectric heating can be used.

The above-mentioned embossed sheet can be used as a cosmetic material by itself. However, when a layer necessary for the embossed sheet is further provided, for example, when the transparent resin layer 7 is provided, the embossed sheet is necessary for the sheet forming the transparent resin layer 7. Layers can be provided in advance, and the embossed sheet 4 and the transparent resin layer 7 can be laminated and integrated by dry lamination. When a printing layer is formed by directly printing on the embossed sheet 4, the printed layer may be formed on the embossed sheet 4 at any stage of the process. It is preferable that the embossed sheet 4 is formed by applying an embossing method, so that the defects of the embossed plate, the traces of the pattern, and the like become less noticeable.

The decorative material 1 can obtain a beautiful decorative plywood by bonding to a plywood or the like. As the substrate to which the decorative material can be adhered, any substrate can be used as long as it is generally used as a substrate of the decorative material. Specific examples include tissue paper,
Paper such as bleached kraft paper, titanium paper, return paper, paperboard, gypsum board paper, etc., vinyl wall paper with polyvinyl chloride laminated on paper surface, wood base material such as wood, plywood, particle board, gypsum board, gypsum Gypsum base material such as slag board, iron plate, galvanized steel plate, PVC steel plate, PVC sol coated steel plate,
Metal plates, such as a copper plate and an aluminum plate, are mentioned. Further, in the present invention, in order to make the decorative material more beautiful and realistic, the outermost surface of the decorative material is provided with an uneven shape by embossing which imitates the uneven shape existing on the surface of the natural wood, or embossed. Further, the wiping ink can be filled in the embossed concave portion.

Next, the present invention will be described in more detail with reference to specific examples.

Example 1 Plotter (Roland DEGITAL GROUP Co., Ltd .: DPX-
3500) to a drafting film using a 0.18 mm-thick film pen.
Y coordinate difference, wavelength difference for two sinusoidal curves and arbitrary X,
A curve group-1 consisting of curves Y ₀ , Y ₁ ... Y ₂₉ , and Y ₃₀ that divide the phase difference and the amplitude difference into 30 equal parts is drawn.

Y ₀ = 13 sin (X / 18) …… Y ₃₀ = 9 sin (X / 22−7) +50… Then, a curve represented by the same relational expression is drawn in the Y-axis direction by 30.
The equally divided curve group-2 was drawn and connected to curve group-1.

Y ₆₀ = 10 sin (X / 19−1) +100 Next, a continuous wave group is drawn by drawing a curve in which the curve group 1 and the curve group 2 are alternately connected, and this figure is represented by 50.
% To make the original.

The copper plate was corroded from the above-mentioned original plate by a photo-etching method to obtain an embossed plate having a groove-like concave and convex pattern corresponding to a group of wavy curves of the original plate having a groove depth of 35 μm.

A transparent vinyl chloride sheet with a wood grain pattern printed on the back side (W-500, manufactured by Riken Vinyl Industry Co., Ltd., 0.1 mm thick) Vinyl Industrial Co., Ltd .: ST-11, thickness 0.0
5 mm) was laminated, and the embossed plate was subjected to embossing by applying heat and pressure from the back surface of the colored vinyl chloride sheet (the surface opposite to the surface subjected to pearl solid printing) to obtain a decorative material.

The obtained decorative material had a natural grain of wood similar to natural wood and was excellent in appearance design.

Example 2 Plotter (Roland DEGITAL GROUP Co., Ltd .: DPX-
3500) to a drafting film using a 0.18 mm-thick film pen.
Y coordinate difference, wavelength difference for two sinusoidal curves and arbitrary X,
A curve group (a) composed of curves Y ₀ , Y ₁ ... Y ₂₉ and Y ₃₀ that divide the phase difference and the amplitude difference into 30 equal parts is drawn.

Y ₀ = 8 sin (X / 20−2) −X / 2... Y ₃₀ = 10 sin (X / 15−1) + 50−X / 2... 30 in the direction
Drawn equally divided curves of (b), connected to a curve group consisting of the above Y ₀ to Y _30.

Y ₆₀ = 11 sin (X / 18-1) + 100−X / 2 Further drawing a curve in which the above curve group (a) and curve group (b) are connected alternately to draw a continuous wave-like curve group. did.

Subsequently, the curve group was further drawn so as to intersect the curve group. That is, π with respect to the curve represented by
The curve represented by the equation was changed in the same manner as described above with the angle changed by / 2, and a curve group overlapping so as to intersect the curve group was drawn and used as an original.

Y ₀ = 8 sin (X / 20-2) + 2X ... Y ₃₀ = 10 sin (X / 15-1) + 50 + 2X ... Y ₆₀ = 11 sin (X / 18-1) + 100 + 2X The following is the same as in the first embodiment. An embossed plate was formed from the original plate using the method and material, and a cosmetic material was obtained from the embossed plate.

The obtained decorative material had a natural grain of light similar to natural wood and was excellent in appearance design without anisotropy of light.

〔The invention's effect〕

As described above, the decorative material of the present invention has an uneven pattern composed of a group of continuous wave-like curves formed so that the function parameters of the function curve are sequentially changed and the interval between the curves smoothly changes in the linear direction. By having the embossed sheet provided with, compared to the decorative sheet having the concavo-convex pattern of the continuous wave-shaped curve group composed of the conventional parallel line group, the interval between adjacent curves in the decorative material of the present invention changes in the linear direction. As a result, it is possible to obtain an illuminated feeling like a natural material which cannot be obtained by the conventional parallel line group.

Further, in the decorative material of the present invention, the interval between the lines is partially reduced by using an embossed sheet provided with a groove-like uneven pattern of a curve group in which parameters are sequentially changed between two sinusoidal curves having different parameters. Since the non-uniform region and the dense region are formed non-uniformly, more natural illumination can be obtained. In particular, it is more effective when all the above parameters are different.

And, for example, using an embossed sheet having a concavo-convex pattern of a curve group consisting of a sine wave curve, if a wood grain pattern is applied to the printed layer to make a wood grain decorative material, the embossed sheet has a natural shine of natural material In addition, a very natural wood texture can be expressed.

Further, the decorative material of the present invention, when the groove-shaped concave and convex pattern is formed from a group of lines provided in such a manner that the group of wavy curves further intersects with a group of wavy curves formed of the same or different function curves, a natural shimmer. In addition to the above, since the illumination anisotropy is eliminated, it is suitable for expressing the texture of a material having no direction in illumination. For example, an embossed sheet in which the above curve group is formed from a sine wave curve is formed, and a wood grain pattern is applied to a print layer to make a decorative material, and is optimally used for a wood grain or the like having no directivity in light of a board material or a heather grain. be able to.

In the method of manufacturing a decorative material according to the present invention, a wave-shaped curve group forming a groove-shaped uneven pattern uses a conventional line group consisting of parallel curves because the interval between the respective lines changes in the line direction. Compared to the method using an embossing plate, when a roll embossing plate is prepared, the connection is easier, and the workability is improved.

Further, in the method for producing a decorative material of the present invention, it is possible to obtain a decorative material having a natural shine by preparing an original plate formed such that a wave-like curve group is a function curve and an interval between each line is changed in a linear direction. it can. Further, by drawing and using a curve group in which the wave-like curve group is further overlapped so as to intersect with the wave-like curve group, a cosmetic material having natural anisotropy without anisotropy can be obtained. In particular, by combining the curve group with a curve group obtained by changing its parameters using a sine wave function curve, for example, by combining with wood grain printing or the like, a wood grain decorative material having natural luster of wood can be obtained. It is particularly suitable for expressing the shine of woodgrain and heather.

In addition, the embossing plate of the present invention can provide a decorative material having a natural shine that has not been obtained from the conventional embossing plate comprising a group of parallel lines.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of the decorative material of the present invention, FIG.
FIG. 4 is a plan view showing an example of a wave-like curve group, and FIG. 4 is a plan view showing an example of a curve group in which the wave-like curve group is further superimposed on the wave-like curve group. DESCRIPTION OF SYMBOLS 1 ... Cosmetic material, 2 ... Thermoplastic resin sheet 3 ... Groove-like uneven pattern 4, ... Embossed sheet 8 ... Wave-shaped curve group

Claims (12)

(57) [Claims] 1. A decorative material having an embossed sheet provided with a groove-shaped concave / convex pattern formed of a group of wave-shaped curves having a width of a concave portion and a convex portion of 1 to 1000 μm on at least the front surface and / or the back surface of a thermoplastic resin sheet. Wherein the wave-shaped curve group comprises a function curve, and has a natural illuminance consisting of a curve formed such that the function parameter of each curve is sequentially changed and the interval between the curves smoothly changes in the line direction. Cosmetic materials. 2. A decorative material having an embossed sheet provided with a groove-shaped uneven pattern composed of a group of wave-like curves having a width of a concave portion and a convex portion of at least 1 to 1000 μm on the front and / or back surface of the thermoplastic resin sheet. The wave-like curve group consisting of the function curves, wherein the wave-like curve group consists of function curves, the function parameters of each curve are sequentially changed, and the intervals between the curves are formed so as to smoothly change in the linear direction. And a wave group formed by overlapping the wave-shaped curve group consisting of the same or different function curves with the wave-shaped curve group so as to intersect with the wave-shaped curve group. 3. When the curve group is a sine wave function curve, and the amplitude is A, the wavelength is λ, and the phase is α, at least one of the function parameters amplitude, wavelength, and phase and the Y-axis intercept are calculated. Of two sinusoidal curves represented by different equations and equations,
From the (N + 1) curves shown when i of the curve represented by the equation obtained by dividing each difference of the wavelength difference, the phase difference, the period difference and the Y coordinate difference into N equals 0, 1,. The decorative material according to claim 1 or 2, wherein Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N …… 4. A sine wave function curve group wherein function parameters such as amplitude, wavelength, phase and Y-axis intercept are all different.
4. The cosmetic material according to claim 3, comprising N + 1 sine wave function curves obtained by dividing each of the wavelength difference, phase difference, period difference, and Y coordinate difference of the two sine wave function curves by N. 5. A method of manufacturing a decorative material having at least an embossed sheet, wherein a wave-shaped curve group comprising curves formed such that function parameters of a function curve are sequentially changed and an interval between the curves changes smoothly in a linear direction. Is created, and the width of the concave portion and the convex portion is 1 to 1000 from the original plate.
forming an embossed plate provided with a groove-shaped uneven pattern corresponding to a wave-shaped curve group that is μm, forming the embossed sheet by closely pressing the embossed plate against a thermoplastic resin sheet and transferring the groove-shaped uneven pattern. A method for producing a decorative material, characterized in that natural illuminance is imparted to the sheet surface by a groove-like uneven pattern composed of a group of wave-like curves. 6. A method of manufacturing a decorative material having at least an embossed sheet, wherein a wave-shaped curve group comprising curves formed such that function parameters of a function curve are sequentially changed and an interval between the curves changes smoothly in a linear direction. And a curve group obtained by overlapping the wave-like curve group and a wave-like curve group consisting of the same or different function curves so as to intersect with each other to prepare an original plate, and the width of the concave portion and the convex portion is 1 from the original plate.
Forming an embossed plate provided with a groove-shaped uneven pattern corresponding to a wave-shaped curve group of ~ 1000 μm, forming the embossed sheet by closely pressing the embossed plate against a thermoplastic resin sheet and transferring the groove-shaped uneven pattern. A decorative material characterized by providing a natural illuminance by a groove-shaped uneven pattern comprising a group of wavy curves and a group of curves overlaid on the sheet surface so as to intersect the group of wavy curves. Manufacturing method. 7. When the curve group is a sinusoidal function curve, and the amplitude is A, the wavelength is λ, and the phase is α, at least one of the function parameters amplitude, wavelength, and phase is determined by using the Y-axis intercept. Of two sinusoidal curves represented by different equations and equations,
From the (N + 1) curves shown when i of the curve represented by the equation obtained by dividing each difference of the wavelength difference, the phase difference, the period difference and the Y coordinate difference into N equals 0, 1,. The method for producing a decorative material according to claim 5. Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N …… 8. A sine wave function curve group wherein function parameters such as amplitude, wavelength, phase and Y-axis intercept are all different.
8. The method for manufacturing a cosmetic material according to claim 7, comprising N + 1 sine wave function curves obtained by dividing each of the wavelength difference, phase difference, period difference, and Y coordinate difference of the two sine wave function curves by N. 9. An embossing plate provided with a groove-shaped uneven pattern comprising a group of wavy curves having a width of a concave portion and a convex portion of 1 to 1000 μm, wherein said group of wavy curves comprises function curves, and a function parameter of each curve. The embossing plate used in the production of a decorative material, characterized in that the embossing plate comprises a curve formed such that the distance between the curves changes gradually in the line direction. 10. An embossing plate provided with a groove-shaped uneven pattern formed of a group of wave-shaped curves having a width of a concave portion and a convex portion of 1 to 1000 μm, wherein the groove-shaped uneven pattern is a function curve and a function parameter of each curve is provided. Are sequentially changed, and a wave-shaped curve group formed such that the interval between the curves changes smoothly in the linear direction, and a wave-shaped curve group made of the same or different function curves are further superimposed on the wave-shaped curve group so as to intersect. An embossing plate used for manufacturing a decorative material, characterized by being formed from a curved group of curves. 11. When the curve group is a sinusoidal function curve, and the amplitude is A, the wavelength is λ, and the phase is α, at least one of the function parameters such as amplitude, wavelength, and phase and the Y-axis intercept are calculated. Of two sinusoidal curves represented by different equations and equations,
From the (N + 1) curves shown when i of the curve represented by the equation obtained by dividing each difference of the wavelength difference, the phase difference, the period difference and the Y coordinate difference into N equals 0, 1,. An embossed plate according to any one of claims 9 to 10. Y ₀ = A ₀ sin (2π / λ ₀ ) X Y _N = A _N sin (2πX / λ _N + α) + ΔY Y _i = ((A _N -A ₀ ) i / N + A ₀ ) sin {((2π / λ _N -2π / λ ₀ ) i / N + 2π / λ ₀ ) X + αi / N} + ΔYi
/ N …… 12. A wavelength difference, a phase difference, a period difference, and a Y difference between two sine wave function curves in which the amplitude, wavelength, phase, and Y-axis intercept of the sine wave function curves are all function parameters.
12. The embossed plate according to claim 11, comprising N + 1 sinusoidal function curves obtained by dividing each difference of the coordinate differences by N and transiting.