JP2001009907A - Decorative material having numerous-line uneven pattern and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a decorative material expressing a wood skin feeling due to the 'gloss' of the grain in a non-artificial and non-studied natural feeling. SOLUTION: A first numerous-line uneven pattern 31 is formed on the surface of a plate base material 21 by two-stage etching and a second numerious-line uneven pattern is further formed thereon so as not to be perfectly overlapped with the numerous-line uneven pattern 31 to form a composite numerous-line uneven pattern 3 having at least three-stage depths to obtain a shaping plate 20 which is, in turn, used to shape an uneven pattern. In the expression of gloss, the first and second numerous-line uneven patterns not perfectly same but almost same in the extending directions of numeral lines are pref. and a fluctuation segment numeral-line uneven pattern comprising patterns wherein a large number of line elements irregularly different in line length are arranged so as to become parallel relation having fluctuation between vicinal line elements is pref.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic material capable of expressing a feeling of wood texture or the like due to "shine" of wood grain in a natural and unnatural manner.

[0002]

2. Description of the Related Art Conventionally, decorative materials having a woodgrain pattern or the like have been widely used as sheets, plates, or other three-dimensional objects. Also, in order to express the unique “shine” of natural wood with a cosmetic material, it has been attempted to provide a parallel line uneven pattern. Shine is a glossiness that is one of the visual characteristics of wood, which is essentially different from the grain pattern that can be expressed by printing with colored ink. This is because the woodgrain pattern that can be expressed by printing of colored ink includes a color component unique to the cut surface in the scattered reflected light component in which light incident on the cut surface of the wood is scattered, and it is surface-distributed on the cut surface. . But "shine"
Is due to a specularly reflected light component that is specularly reflected by a large number of fibrous materials such as cells, fibers, and conduits appearing on a cut wood surface. Since this reflected light is specular reflection, it does not reflect the color of the reflecting object,
The intensity of the amount of specular reflection due to a slight difference in the orientation direction of the fibrous portion appears as a surface distribution, resulting in “shine”. Therefore, it has been attempted to express the distribution pattern of the surface intensity of the specular reflected light by providing a line pattern in the past.

A decorative material provided with a line pattern in order to express "shine" as described above is, for example, Japanese Patent Publication No. 7-229.
No. 89, Japanese Patent Publication No. Hei 7-106625, Japanese Patent Application Laid-Open No. 4-125199, and the like. Then, a parallel curve group (see FIGS. 18A and 18C) or a line group obtained by combining the parallel curve group and the parallel straight line group [FIG.
(B)] is disclosed. As a representative example of the parallel curve group, a plurality of curve units of a sine wave, a cycloid curve, and an arc are arranged in parallel with each other. In addition, the line group pattern includes a line pattern with different line directions and shapes for each of a plurality of closed regions surrounded by the contour line (FIG. 18).
(D)). Then, in addition to the parallel curve group concave and convex pattern formed by arranging a large number of wave-shaped curve-shaped concave grooves having a fixed period or an irregular period in parallel with each other as shown in FIG. In addition, a parallel line uneven pattern formed by a group of parallel straight lines formed by arranging a large number of straight concave grooves running in the same direction in a partitioned area surrounded by a closed curve in parallel to each other is given. Then, as a form in which the lines are not completely parallel, the wave-like curve group is composed of function curves, as shown in FIG. 19, and the function parameters of each curve are sequentially changed by a groove-like uneven pattern composed of wave-like curve groups. It has been proposed that the unevenness of the line pattern in which the intervals between the curves are smoothly changed in the line direction can express the grain of wood more naturally.
As shown in the perspective view of FIG. 18 (F), each of the above-described conventional parallel line uneven patterns is a continuous curve or the like having a monotonous parallel relationship.

[0004]

As described above, various cosmetic materials have been proposed, in which the shine of a natural tree is expressed by providing a fine groove-like uneven pattern, and the shine can be expressed tentatively. However, the illuminated feeling was unnatural as compared with the illuminated natural tree because of the artificially provided unevenness of the lines.
The above-mentioned conventional parallel line uneven pattern may be partially special as shown in FIGS. 18C and 18D in all of them. Has a regularity (perfectly parallel) or a smoothly changing regularity even when it is not constant. This is because the length of the line serving as the groove is assumed to be continuous or infinite within the region. That is, in FIGS. 18A, 18B, and 19, the lines are infinite, and in FIGS. 18C, 18D, and 18E, the length of the lines themselves is not finite. However, the lines are connected endlessly (FIG. 18C) or are continuous over the entire area within one closed area (FIGS. 18D and 18E).
Further, in all of these, a single line uneven pattern (rather than a composite line-shaped uneven pattern formed by three-dimensionally superimposing the line uneven patterns as in the present invention) (the level of the high and low This is because only two stages (as apparent from FIG. 18F) were used.

[0005] Accordingly, an object of the present invention is to provide a unique line-shaped uneven pattern, in particular, to reduce the feeling of the wood texture due to the “shine” of the grain.
An object of the present invention is to provide a cosmetic material that can be expressed in a natural feeling without being artificial and skillful, and a method of manufacturing the same.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a decorative material having a line-shaped uneven pattern, which has a line-shaped uneven pattern on the surface of a base material. The uneven pattern is formed of an aggregate of a first line-shaped uneven pattern and a second line-shaped uneven pattern whose patterns in plan view do not completely overlap each other, and the level surface in the depth direction is With such a line-shaped concavo-convex pattern having a configuration consisting of three or four steps (this will be referred to as a complex line-shaped concavo-convex pattern), a single line-shaped concavo-convex pattern is seen in a plan view. Compared to a conventional uneven pattern having two levels of patterns, it is a cosmetic material that is less likely to be an artificial technique and can express a natural texture. For example, in the shine expression of wood grain, shine can be expressed with a natural feeling without blatantness. Also, the first
And the two types of illumination distributions of the second line-shaped concavo-convex pattern can also be expressed in an overlapping manner, and a complex illumination expression can also be obtained.

In the method for producing a decorative material having a line-shaped uneven pattern according to the present invention, the uneven pattern is formed by two-stage corrosion as a shaping plate for forming the line-shaped uneven pattern on an object to be applied. Use shaped imprints. That is, after the first line-shaped uneven pattern is formed by corrosion on the surface of the plate substrate, the first
The second line-shaped uneven pattern is formed by corrosion so that the uneven pattern does not completely overlap with the line-shaped uneven pattern of the first and second lines.
Using a shaping plate on which a complex line-shaped uneven pattern having at least two levels of depth due to the line-shaped uneven pattern is formed, the first line-shaped uneven pattern and the second The composite line-shaped uneven pattern composed of the line-shaped uneven pattern is formed.

As described above, as the shaping plate to be used, the line-shaped uneven pattern is formed on the surface of the plate base material by two-step corrosion, and the line-shaped uneven pattern formed by each corrosion is completely formed. By corroding so that the uneven pattern does not overlap, 2
Depth (high and low) of different types of uneven patterns overlapping at each part
The three levels or the four levels resulted in a complicated uneven shape, and a shaping plate having a complex composite line-like uneven pattern was used. As a result, compared to the conventional uneven pattern having a single line-like uneven pattern in a plan view and two levels of elevation, the artificial skill and uniqueness are reduced, and a makeup that can express a natural texture is provided. Wood can be obtained. For example, in the shine expression of wood grain, shine can be expressed with a natural feeling without blatantness. In addition, the distribution of two types of illuminations by each of the first and second line-shaped concavo-convex patterns can also be expressed in an overlapping manner, and a complex illumination expression can be obtained.

Further, the second aspect of the method for producing a decorative material having a line-shaped concavo-convex pattern according to the present invention further includes both the first and second line-shaped concavo-convex patterns in addition to the first embodiment. However, the direction in which the lines extend is not completely the same but is substantially the same.

[0010] By manufacturing a decorative material using such a shaped plate, for example, in the expression of grain of wood, the direction of illumination and its surface distribution are, when viewed globally, a single line-shaped uneven pattern. Almost the same as the expression, but because the second line-shaped uneven pattern, which is slightly different when viewed locally, is also intertwined three-dimensionally, the contour of the distribution tends to be blurred, and the surface distribution of the illumination is random and fine The intensity is modulated and the shine is calm. For this reason, compared with the expression by a single line-shaped uneven pattern, the feeling becomes softer, and the explicit regularity is reduced.
Therefore, in the shine expression of the grain, the shine can be expressed with a more natural feeling.

Further, a third embodiment of the method for producing a decorative material having a line-shaped uneven pattern according to the present invention further comprises a first line-shaped uneven pattern and a second line-shaped uneven pattern in addition to the second embodiment. Each of the linear concave and convex patterns is composed of a pattern in which a number of line elements having irregularly different line lengths are arranged between adjacent line elements so as to be in a parallel relationship with fluctuation. The method used was a shaping plate having a rugged pattern.

By manufacturing a decorative material using such an imprinting plate, the line elements, which are the constituent elements of the line-shaped uneven pattern, are not in a parallel relationship in which the adjacent line elements are aligned. ,
Since the length of each line element is also irregular, there is no feeling that it is an artificial technique, and it is possible to express shining and the like with a very natural feeling. In addition, by combining the fluctuation line segments with the linear irregularities, even if the surface density of the line elements becomes sparse in some places with a single fluctuation line and the linear irregularities, it becomes less noticeable. It will be possible to express the grain of wood and the like with a more natural feeling.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a decorative material having a line-shaped uneven pattern and a method of manufacturing the same according to the present invention will be described with reference to the drawings.

[Shaped plate by two-stage corrosion] First, a shaped plate by two-stage corrosion, which is a feature of the production method of the present invention, will be described with reference to the conceptual diagram of FIG. FIG. 1 is a conceptual diagram showing a method for producing a shaped plate having a composite line-shaped uneven pattern by forming first and second line-shaped uneven patterns on the surface of a plate base material by corrosive formation by two-step corrosion. is there.

First, as shown in FIG. 1A, after a photosensitive resist film 22 is formed on a plate base 21 made of metal or the like, a plan view pattern P1 corresponding to the first first line-shaped uneven pattern is formed.
Is exposed by scanning the photosensitive resist film 22 with a laser beam B or the like. After the photosensitive resist film 22 is developed as shown in FIG. 1B, it is corroded (if the photosensitive resist film 22 is removed), and only the first uneven pattern 31 as shown in FIG. Thus, a shaped plate 23 of one-stage corrosion is obtained. The shaping plate used for the line-shaped uneven pattern listed as the prior art is the shaping plate 23 of this one-stage corrosion with only one corrosion.

Further, in the present invention, corrosion is performed once more. That is, as shown in FIG.
The new photosensitive resist film 22a formed on
The pattern P2 in plan view corresponding to the line-shaped uneven pattern is exposed by scanning a laser beam B or the like. However, the second
The line-like concave-convex pattern is made so that the pattern in the plan view does not completely overlap with the first line-like concave-convex pattern in the first direction (the pattern may be partially overlapped. A part can be close to most or just a few, in fact, see FIGS. 14 and 15). And FIG.
After developing the photosensitive resist film 22a as shown in FIG. 1E, the photosensitive resist film 22a is corroded (the photosensitive resist film 22a is removed).
As shown in (F), a shaping plate 20 (with two-stage corrosion) having a complex line-shaped uneven pattern 3 used in the method for producing a decorative material of the present invention.
Is obtained. It is needless to say that, when the object is to be shaped, the concavo-convex pattern has an inverse relationship between the concavities and convexities.

FIG. 1 (G) shows a state where the first and second line-shaped uneven patterns are compounded in the composite line-shaped uneven pattern 3 of the shaping plate 20 thus obtained. It is a perspective view which shows notionally. Note that, in the conceptual diagram of FIG. 1 (G) or the shaping plate 20 illustrated in FIG. 14 described later, or the final decorative material D illustrated in FIG. Recognizing the original first line-shaped uneven pattern (or its pattern in plan view) and the second line-shaped uneven pattern (or its pattern in plan view) completely can be recognized by the uneven pattern. Depends but generally difficult. But,
Some of the many lines forming the composite line-shaped uneven pattern 3 may be recognized separately. For this reason,
FIG. 1 conceptually shows a perspective view of a composite line-shaped uneven pattern 3
(G) does not show the original first and second line-shaped uneven patterns. (However, in the decorative material D of FIG. 15, some lines (grooves) are shown.)

As described above, in the composite line-shaped uneven pattern, the first and second line-shaped uneven patterns from which the original line pattern were completely formed were recognized, and then they were overlapped and corroded. It is difficult to determine that they are things. However, the composite linear uneven pattern according to the present invention has a characteristic shape of 2
Has at least three levels of depth due to step corrosion,
In addition, it can be recognized that the first and second line-shaped uneven patterns are patterns in which the uneven patterns do not completely overlap. In the two-stage corrosion, the level of the depth of the concavo-convex pattern formed is three or four. That is, if the amount (depth) corroded by the first corrosion is equal to the amount (depth) corroded by the second corrosion, only the depth of the first corroded portion and the second corroded portion are corroded. The level of the complex line-shaped uneven pattern is the same as the level surface that has been corroded twice, the level surface that has been corroded only once or the second time, and both levels have been corroded. There were a total of three levels, the level that was not there. However, it goes without saying that the first and second times may have different amounts of corrosion. In this case,
The level surface formed by the composite line-like uneven pattern is a level surface that has been corroded only for the first time, a level surface that has been corroded only for the second time, and the first and second levels.
In both cases, the level surface was corroded in both cases, and the level surface was not corroded in both cases, for a total of four levels. Further, when the first, second, and third line-shaped uneven patterns are corroded three times,
Depending on whether or not the amount of corrosion at each time is the same, at least four levels and at most nine levels are formed in the depth direction. And
As the first and second line-shaped uneven patterns, it is preferable to use a conventionally-known line-shaped uneven pattern or a “fluctuation line segment line-shaped uneven pattern” which will be described later in the expression of grain of wood. .

[Shaping of a concavo-convex pattern by a shaping plate] The shaping plate obtained in this manner is used in the same manner as in the case of a conventionally known line pattern, depending on the material of the base material to be applied. By using it as an embossing plate, a mold, or the like, the decorative material of the present invention is obtained.

(1) When the object to be applied in the decorative material can be plastically deformed by heat and pressure with a thermoplastic resin sheet or the like, heat and pressure are applied by a shaping plate prepared as an embossing plate. Just shape it. For embossing, various known presses and embossing machines such as a lithographic press and a roll embossing machine are used. In the roll embossing method using a cylindrical embossing plate, the object to be provided can be continuously produced as a long strip-shaped sheet or the like, so that the productivity is good. The heating and pressurizing conditions for the object to be applied differ depending on the thermo-pressure behavior of the object to be applied, but in the case of a normal thermoplastic resin, the softening point or the heat deformation temperature and the appropriate temperature between the melting point or the melting temperature are set. Heat, press and shape the embossing plate, cool and fix the shape. In addition, even when plastic deformation is impossible with a curable resin such as a thermosetting resin,
At the stage before the solidification, which can be plastically deformed, it is shaped by applying heat or pressure with an embossing plate, or if it can be handled at the liquid stage, it is cured by using the embossing plate as a mold (detailed later) To do), etc. The shaping by the embossing plate is usually suitable when the object to be applied is a sheet or a plate.

(2) When the object to be applied is a three-dimensional object and is a molded body such as a resin, a molding die having a complex linear uneven pattern formed on the mold surface of the molding die is used as a shaping plate. And the surface is shaped simultaneously with the molding using the molding die. The molding method is, for example, injection molding, casting molding, compression molding or the like.

It should be noted that, in addition to providing a composite line-shaped uneven pattern directly to the decorative material from the shaped plate (prepared by two-stage corrosion),
What is once formed into a sheet etc. from the shaping plate is used as a second shaping plate. A method of providing an uneven pattern may be used. For example, a support sheet of a transfer sheet including a support sheet and a transfer layer is used as the second shaping plate. That is, a composite linear uneven pattern is formed on a support sheet from a shaping plate (prepared by two-stage corrosion), and the surface of the transfer layer that is transferred and transferred to an object to be transferred by the formed support sheet. And a method of applying a composite line-shaped uneven pattern together with the transfer. In this case, if a transfer sheet is inserted into a molding die and molded, a method of applying a complex linear uneven pattern together with a picture or the like at the same time as molding to the surface of a molded body of resin or the like (so-called injection molding in injection molding). Transfer method in simultaneous molding and painting method).

Next, among the above-mentioned various application methods, a method of curing by using a shaping plate as a molding die in the uncured liquid phase of the curable resin described in (1) above is described as ionizing radiation curable resin. A method of continuously forming a composite line-shaped uneven pattern of a cured resin of an ionizing radiation-curable resin on a continuous band-shaped base sheet using a resin and a cylindrical embossing plate will be described in further detail.

This method is disclosed in JP-A-57-87318, JP-B-57-22755, and JP-B-63-50.
066, JP-A-7-32476, and the like, which is a method of faithfully shaping the uneven shape of a shaping plate (molding die) into a cured product of an ionizing radiation curable resin. Basically, it comprises the following steps.

A cylindrical plate cylinder (a shaping plate as a molding die) having a surface having the same shape as the desired shape and having a concavo-convex shape having a concavo-convex shape (composite line-shaped concavo-convex pattern) is prepared. Rotate around the core. A long strip-shaped base sheet is supplied at the same speed as the peripheral speed of the plate cylinder. The base sheet and the plate cylinder are overlapped with each other via an uncured liquid composition of an ionizing radiation-curable resin, and are brought into close contact with each other, so that the liquid composition completely fills at least the concave portion of the plate cylinder. To The liquid composition is crosslinked and cured by irradiating it with ionizing radiation in that state. Thereafter, the base sheet is peeled and removed together with the cured product of the ionizing radiation-curable resin on which the uneven pattern on the plate cylinder is formed by adhering thereto.

In the above method, the cylindrical plate cylinder (mold) is basically the same as the known intaglio, gravure, and embossing plates, and is made of the same material, the same structure, and the same manufacturing method. You can use it. As a material of the plate, usually, a metal such as iron or copper is used. However, when irradiating ultraviolet light or visible light from inside the plate cylinder, a transparent material such as glass or quartz is used. The rotation drive around the axis of the plate cylinder is
The same mechanism and method as those of a normal transfer type gravure printing machine and a rotary embossing machine may be used. In order to adhere the base sheet to the plate cylinder, the base sheet is pressed by a roller (press roller) made of rubber, metal, or the like. Also, when the base sheet is peeled from the plate cylinder, the base sheet is peeled by pressing with a roller (peeling roller) made of rubber, metal or the like. A long and band-shaped base sheet is used. Such a base sheet is unwound from an unwinding roll (supply roll) and, after shaping, wound up by a take-up roll (paper discharge roll).

There are the following modes (1) to (3) for laminating the base sheet and the plate cylinder together with an uncured liquid composition of an ionizing radiation-curable resin therebetween. (1)
First, the liquid composition is applied onto a substrate sheet, and then the substrate sheet is overlaid on the plate cylinder such that the application surface faces the plate cylinder surface. (2) First, the liquid composition is applied on the plate cylinder, and then the base sheet is overlaid on the application surface on the plate cylinder. (3) First, the liquid composition is applied on each of the plate cylinder and the base sheet, and then the base sheet and the plate cylinder are overlapped with each other with the application surfaces facing each other.

There are the following modes of irradiating the uncured liquid composition between the plate cylinder and the base sheet with ionizing radiation. A substrate sheet transparent to ionizing radiation is selected (for example, a polypropylene substrate sheet is selected for ultraviolet rays and a thin paper sheet is selected for electron beams), and irradiation is performed from the substrate sheet side. A plate cylinder that is transparent to ionizing radiation is selected (for example, a quartz plate cylinder is selected for ultraviolet rays), and irradiation is performed from the inside of the plate cylinder.

The base sheet may be made of thermoplastic polyester resin such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyolefin resin such as polyethylene, polypropylene, polymethylpentene, olefin-based thermoplastic resin elastomer, or polyvinyl chloride. , Resin sheets such as polycarbonate, polystyrene, ABS resin, acrylic resin, etc., tissue paper, woodfree paper, kraft paper, paper such as Japanese paper, glass, vinylon, polyester, cellulose and other non-woven fabrics or woven fabrics, aluminum, iron, etc. There is a metal foil such as copper. The above conditions (1) to (4) are possible only in the case of ultraviolet irradiation from inside the transparent plate cylinder, or in the case of highly transparent radiation such as an electron beam. The thickness of the base sheet is usually 20 to 200 μm.
m is used.

Examples of the ionizing radiation-curable resin include a prepolymer having a polymerizable unsaturated bond such as a (meth) acryloyl group or a (meth) acryloyloxy group, or a cationic polymerizable functional group such as an epoxy group in a molecule. A composition comprising a monomer, a polymer, or a polythiol compound, and a mixture of one or two or more of these compounds is used.
The composition used is a liquid when not cured.

Examples of the prepolymer having a polymerizable unsaturated bond in the molecule include unsaturated polyesters such as a condensate of an unsaturated dicarboxylic acid and a polyhydric alcohol, polyester (meth) acrylate, and urethane (meth) acrylate. (Meth) acrylates such as epoxy (meth) acrylate and melamine (meth) acrylate [in the present specification, (meth) acrylate is used to mean acrylate or methacrylate. The same applies hereinafter. Examples of the monomer having a polymerizable unsaturated bond in the molecule include styrene monomers such as styrene and α-methylstyrene, methyl (meth) acrylate, (meth)
Monofunctional (meth) acrylates such as 2-ethylhexyl acrylate, methoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate
Polyfunctional (meth) acrylates such as acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and (meth) acrylic acid-2- (N, Substituted aminos of unsaturated acids such as N-diethylamino) ethyl, 2- (N, N-dimethylamino) ethyl (meth) acrylate, 2- (N, N-dibenzylamino) ethyl (meth) acrylate Alcohol esters, unsaturated carboxylic acid amides such as (meth) acrylamide, polythiol compounds having two or more mercapto groups in the molecule, for example, trimethylolpropanetrithioglycolate, trimethylolpropanetrithiopropylate, pentaerythritol Such as tetrathioglycol .

The prepolymer having a cationically polymerizable functional group in the molecule includes bisphenol type epoxy resin,
Novolak epoxy resin, aliphatic epoxy resin, etc.
Examples include epoxy resins such as alicyclic epoxy resins, vinyl ether resins such as aliphatic vinyl ethers, aromatic vinyl ethers, urethane vinyl ethers, and ester vinyl ethers; cyclic ether resins; and prepolymers such as spiro compounds.

If necessary, one or two of the above compounds may be used.
The prepolymer or oligomer is preferably used in an amount of 5% by weight or more and the monomer and / or polythiol is preferably used in an amount of 95% by weight or less in order to impart ordinary coating suitability to the resin composition. . Further, in order to control physical properties such as flexibility and surface hardness of the cured product, the following ionizing radiation non-curable resin is used in an amount of 1 to 70% by weight based on at least one of the prepolymer, oligomer and monomer. They can be used in a mixed state. As ionizing radiation non-curable resin, urethane resin, cellulose resin, polyester resin, acrylic resin, butyral resin,
Thermoplastic resins such as polyvinyl chloride and polyvinyl acetate can be used.

In particular, in the case of curing with ultraviolet rays, a photopolymerization initiator is added to the ionizing radiation-curable resin composition. For compounds having a radical polymerizable unsaturated bond in the molecule, acetophenones, benzophenones, Michler benzoyl benzoate, α-amyloxime ester,
Tetramethyl meuram monosulfide, thioxanthones and the like. Compounds having a cationically polymerizable functional group in the molecule include aromatic diazonium salts, aromatic sulfonium salts, aromatic iodonium salts, metallocene compounds, benzoinsulfonic acid esters, diallyliodosyl salts, and the like. If necessary, n-butylamine, triethylamine, tri-n-butylphosphine and the like can be further mixed and used as a photosensitizer.

The above-mentioned uncured liquid composition of the ionizing radiation-curable resin composition is applied to a plate cylinder or a substrate sheet by various known methods, for example, roll coating, curtain flow coating, T-die coating and the like. Use the method. In particular, in the case of plate cylinder coating, it is possible to immerse the rotating plate cylinder in the liquid composition in the ink pan (so-called dip dipping).

Here, the ionizing radiation means an electromagnetic wave or a charged particle beam having energy capable of polymerizing and cross-linking molecules, and includes ultraviolet rays, visible rays, X-rays, electron rays, α rays and the like. However, ultraviolet rays or electron beams are usually used. Ultra-high pressure mercury lamps, high pressure mercury lamps,
Light sources such as low-pressure mercury lamps, carbon arc lamps, black light lamps, and metal halide lamps are used. As the electron beam source, various electron beam accelerators such as Cockcroft-Walton type, Van degraft type, resonance transformer type, insulating core transformer type, or linear type, dynamitron type, and high frequency type are used, and 100 to 1000 keV, preferably Is 10
A device that irradiates electrons having an energy of 0 to 300 keV is used.

[Composite Concave-and-Concave Pattern] Next, the complex linear concavo-convex pattern in the decorative material of the present invention will be further described.
First, in general, the line pattern is a line pattern 8 composed of groove-shaped concave portions 1 and convex portions 2 as conceptually shown in the cross-sectional view of FIG. The pattern shown in FIG. Incidentally, the “planar pattern” of the line-shaped uneven pattern referred to in the present invention means that the line-shaped uneven pattern is the surface of the line-shaped uneven pattern 8 as described with reference to the general line-shaped uneven pattern 8 in FIG. Is a plane pattern obtained by projecting onto the envelope surface E to obtain a projection and developing the envelope surface E into a plane (the projection of the parallel line uneven pattern projected on the envelope surface is also planarized accordingly). It is. In particular, as shown in FIG. 2, when the envelope surface E on the surface of the decorative material is a plane, the projection of the parallel line pattern 8 onto the envelope surface (xy plane or a plane parallel thereto) becomes the plan view pattern itself. In the decorative material, a line portion as a line is usually a concave portion 1 when a line pattern is present on the outer surface, and a gap portion between the lines is convex. This corresponds to the unit 2, but the reverse may be applied.

Similarly, in the case of the composite line-shaped uneven pattern according to the present invention, in the decorative material, the line portion as the line is usually formed when the composite line-shaped uneven pattern is present on the outer surface. , The line portion corresponds to the concave portion, and the gap portion between the lines corresponds to the convex portion, but may be reversed. However, since the lines are compounded, even if the gap between the lines in the first line-shaped concavo-convex pattern is a convex portion, part or all of the portion is the second line. If it overlaps with the line portion in the linear concavo-convex pattern, the overlapped portion is not the height of the original surface but a concave portion having an intermediate depth. Of course, the concave portion can be regarded as a shallow convex portion with respect to the concave portion due to the overlapping portion of the line portions in both the first and second line-shaped concave and convex patterns.

As shown in the plan view of FIG. 3, the composite linear uneven pattern of the present invention is completely different from the first and second linear uneven patterns. This is a line-shaped uneven pattern that is combined so that the patterns P1 and P2 of the pattern are not completely overlapped with each other. In FIG.
Reference numeral 41c denotes a plan view pattern P1 of a line element of the first linear uneven pattern 31, and reference numerals 42a to 42c denote plan patterns P2 of line elements of the second linear uneven pattern 32. The composite linear uneven pattern 3 is formed from the first linear uneven pattern 31 and the second linear uneven pattern 32. In FIG. 3, the lines are illustrated by finite length line elements, but may be infinite. In the present invention, it is assumed that the planar patterns of the concavo-convex pattern do not completely overlap in plan view, as shown in FIG. Even when the element 41b and the element 42b overlap each other as in the element 42b and the element 42b is included in the element 41b, the center lines of the elements 41b do not coincide with each other, or the element 41b is shifted.
c and line element 42c (or line element 41b and line element 42b)
Although the lengths of the line elements are different from each other even if they overlap each other as shown in FIG. Directions) are different. Needless to say, a line represented by a large number of line elements does not exclude a part (perhaps a very small number) of one or more line elements completely overlapping each other. This is because a perfectly coincident overlap of some line elements may occur by accident in some cases. Further, as shown in FIG. 3, the cross-sectional shape of the composite linear uneven pattern having the positional relationship between the patterns P1 and P2 in a plan view forms a three-step level surface as shown in FIG. .

As the first and second line-shaped uneven patterns, the line-shaped uneven patterns used for each may be a conventionally known line-shaped uneven pattern. For example, it is a parallel line pattern as shown in FIGS. 18 and 19 described in the related art. Alternatively, a hairline pattern created by computer image processing disclosed in Japanese Patent Application Laid-Open No. H10-16375 can also be used as a line pattern. In order to use these line-shaped uneven patterns as the first and second line-shaped uneven patterns, even if the original patterns are exactly the same, it is necessary to rotate (the entire pattern) or to increase or reduce the magnification (reduction) magnification. By changing it, if you use it with a gap, you can make it not completely overlap. Alternatively, a different uneven pattern may be used.

As the complex line-shaped uneven pattern in the present invention, it is preferable to use a different uneven pattern between the first and second line-shaped uneven patterns because the complexity is increased and a natural line-shaped uneven pattern is used. Desirable because it can express feeling and complexity. When different concavo-convex patterns are used for the first and second line-shaped concavo-convex patterns, the difference is different depending on the intended design expression. For example, in a completely different case, the line pattern of FIGS. 18A and 18C is used.

In particular, in the case of expressing the shine of wood grain, for example, the same line pattern is used as the first and second line pattern uneven patterns in FIG. )
It can be used by shifting it by rotating or changing the magnification (reduction) magnification, or similar but different line unevenness pattern (for example, the direction in which the lines extend is not completely the same but is almost the same) ) Gives a more natural feel.

Among them, a composite line-like concave-convex pattern that can express more natural grain shine is preferable as a line-like pattern in which the direction in which the lines extend is not completely the same but substantially the same. A large number of line elements having irregularly different line lengths are provided on both the line-shaped uneven pattern and the second line-shaped uneven pattern so that the adjacent line elements have a fluctuating parallel relationship. In this example, a staggered line-shaped uneven pattern composed of arranged patterns is used.

In the description of the present specification, in particular, in the case of distinguishing the line-shaped uneven pattern of the fluctuation line segment, it is described as "the line-shaped uneven pattern of the fluctuation line" and simply referred to as "the line-shaped uneven pattern". In some cases, the pattern is described as a concavo-convex pattern that includes the "conventionally known line-shaped concavo-convex pattern" and the "fluctuation line segment line-shaped concavo-convex pattern" described with reference to FIGS. Further, a pattern obtained by combining such a line-shaped uneven pattern as first and second uneven patterns by two-step corrosion is referred to as a “composite line-shaped uneven pattern”.

In addition to the first and second line-shaped uneven patterns, a third (or more) line-shaped uneven pattern is three-dimensionally compounded. May be. That is, in this case, the third line-shaped uneven pattern is exposed on the plate base material on which the second line-shaped uneven pattern has been corroded, and a developed resist pattern is formed. Good. The composite line-shaped uneven pattern thus obtained was overlapped so that its plan view pattern did not completely overlap the first, second, and third line-shaped uneven patterns in plan view. The level surface in the pattern and in the depth direction has four to nine steps depending on the first, second, and third corrosion depths. Similarly, the fourth, fifth,..., Line-shaped uneven patterns can be combined. However, as the more line-shaped uneven patterns are combined, the number of steps increases, and the formation of the photosensitive resist film on the plate substrate having the uneven patterns and the exposure of the line-shaped uneven patterns become difficult. come.

Next, a more detailed description will be given of a line-shaped uneven pattern with fluctuation lines.

(Fluctuating line segment line-like uneven pattern) As shown in FIG. 4, in the case of the fluctuation line segment line-like uneven pattern 9, FIGS.
As seen in a conventionally known parallel line uneven pattern such as 9, the lines are not continuous and have a finite length in an arbitrary region. In other words, the pattern is not a pattern in which a large number of continuous lines supposed to be infinite in the region are arranged in parallel with each other, and is not a closed curve. It is not necessarily perfectly parallel between adjacent line elements, but is composed of patterns arranged in a parallel relationship having irregularities due to fluctuations such that they are substantially parallel. Accordingly, as can be seen from FIG. 4, in the fluctuation line segment line-shaped uneven pattern,
The tip of another element is not always located on the extension of the end of one element. However, the running directions of the respective line elements are not arranged at all at random. Instead, the line-shaped uneven pattern 3 as the fluctuation line segment line-shaped uneven pattern illustrated in FIG. When viewed as the average of the aggregate,
It has a certain directionality, such as waves, that is, anisotropy. In addition, even in the case of the composite linear uneven pattern by the fluctuation line segment linear uneven pattern, the portion of the linear element 4 corresponds to the concave portion 1 such as when the composite linear uneven pattern usually exists on the outer surface, The gap between the line elements corresponds to the convex portion 2, but may be reversed.

Next, with reference to the conceptual diagram of FIG. 5, a description will be given of the arrangement of the line elements in a parallel relationship with fluctuation, which is one of the features of the fluctuation line segment linear uneven pattern. In the figure, with respect to a small area of the virtual plane P on which the line element 4 is arranged, in a direction vector field parallel to each other of the virtual plane (arbitrary point above), each vector is obtained by connecting the vectors in the direction thereof. Lines, ie streamlines of the vector field, are shown as a plurality of lines 5. The virtual plane P is a plane. However, a surface (envelope surface) having a complex linear uneven pattern in an actual decorative material may be a curved surface, a bent surface, or the like in addition to a flat surface. The adjacent lines 5 are parallel in the case of FIG. Of course, the lines 5 separated from each other in a wider area are not necessarily in a parallel relationship. However, even in a non-parallel relationship, a parallel relationship is established in a small area. The direction vector at a certain point Q on the line 5 is Vq →, and the direction vector at a point R on the same line 5 away from the point Q is Vr →. [The vector is originally represented by a horizontal arrow attached to the character, but for convenience, it is attached to the right side of the character here.] The directional vector is a two-dimensional vector. The direction vector is, of course, not random in the entire virtual plane where the line elements are arranged, for example,
This is a vector that defines wavy or the like and any anisotropy. Also, here, the respective lines 5 are illustrated in parallel with each other, but a direction vector having, for example, an intermediate value between the illustrated lines 5 exists between the illustrated lines 5. Line 5 is drawn. It should be noted that such a plurality of parallel lines 5 may be considered as lines in a conventionally known line uneven pattern. To put it simply, a finite-length fluctuation line-shaped uneven pattern is a line (line 5) in a conventionally known line-shaped uneven pattern.
On the other hand, a plurality of linear elements 4 having irregular lengths are given a predetermined variance in the running direction of the linear elements so that the average value coincides with the parallel lines (line 5), and the parallel relationship with the parallel lines is obtained. They are arranged with fluctuations to form a pattern as a line-shaped uneven pattern.

As shown in FIG. 5, each of the line elements 4a to 4d arranged on the imaginary plane P has an irregular and irregular line length. In addition, when viewed in a small area, each line element has a fluctuating parallel relationship and is approximately parallel. In other words, the direction vector of each line element fluctuates with respect to the parallel direction vector field of the virtual plane P, but roughly coincides. In other words, the shape in which each line element (direction vector) runs is along the line 5 of the virtual plane P, or substantially along the line even if shifted. Therefore, each line element 5 has regularity at this point (the direction vector of the virtual plane P is not random but has anisotropy, and thus has regularity due to this anisotropy). In addition, as illustrated by the line elements 4a and 4b in FIG. 5, the line elements do not necessarily need to be separated and independent from each other, and may be partially in contact with each other.

In the conceptual diagram shown in FIG. 4, FIG.
As shown, the line width (thickness) of each line element 4 is the same, and the line element 4 has a uniform thickness from the start point to the end point. However, as shown in FIG. 6 (B), both ends of the start point and the end point are thinned and sharpened. Is also good. Also, the line width may have a certain degree of regularity, such as being thin if the line width is irregular or short according to the line length, and constant or substantially constant above a certain length. In particular, sharpening both ends can prevent unnaturalness due to sudden termination of a wire element. However, the sharpened tip may be smoothly rounded or may be acute.

As described above, the fluctuation line segment linear irregular pattern has a parallel relation in which the parallel relation between adjacent line elements fluctuates at least, and the direction of each line element is a constant average value. It is characterized by the fact that it has a regularity that takes into account the irregularity of having a distribution with variance, and that the line element is not a continuous line with infinite length but the line length is finite and irregular. . For this reason, the fluctuation line segment line-shaped uneven pattern is similar to the conventional “line-line uneven pattern” of the uneven pattern formed by continuous continuous lines in terms of anisotropy, but from the specific example illustrated in FIG. As you can see, the pattern is that the line is composed of line elements,
They are completely different in terms of irregularities due to fluctuations and the like.

By the way, the line-like uneven pattern of the fluctuation line segment is
The above and other irregularities may be provided. For example, the height difference of the unevenness, the line width, the ratio between the line length and the line width, the surface density at which the line elements are distributed, and the like. Further, the irregularity of the line length of the line element may be an irregularity having fluctuation distributed with a predetermined variance around an average value of a certain length. By further giving these various irregularities, the grain of wood can be expressed more naturally.

One of the average line anisotropy (shape) shown by the fluctuation line segment line-shaped uneven pattern is shown in FIG.
8 (A) or the waveform shown in FIG. 8 (A).
This is a pattern suitable for expressing the shine of the grain on the skin surface obtained by cutting the tree diagonally or parallel to the growth direction. Of course, although the fluctuation line segment line-shaped uneven pattern is conscious of being particularly suitable for expressing the shine of wood grain, it can be naturally used for other design expressions. If the running direction of the line element of the fluctuation line segment line-shaped uneven pattern is changed in a partial portion, a decorative material having a different amount of specular reflection in the region of the partial portion on the surface can be obtained. Of course, the pattern may be any pattern according to the design expression.

Therefore, in addition to the waveform shown in FIG. 8 (A), for example, the entire surface of a substantially straight line as shown in FIG. , FIG.
The spiral anisotropy and the like and the anisotropic pattern as in (C) are optional. However, as shown in FIG. 8 (D), each line element has an irregular line length but a completely irregular direction and does not have any anisotropy. In FIG. 8D, the illumination in a certain minute area is not distinguished from the other areas, and the illumination becomes uniform over the entire surface. In addition, FIG.
8 (A) to 8 (E), and various line uneven patterns in FIG.
The direction vector field at the time of arranging the line element may be (a streamline of).

Next, the relationship between the magnitude of the specular reflected light amount and the fluctuation line segment linear uneven pattern will be described with reference to the conceptual diagram of FIG. FIGS. 9A and 9C show the amount of specular reflection light to be expressed on a certain surface of a natural wood board when the angle of incidence of the illumination light source and the line of sight of the observer are fixed to a certain combination. FIG. 9 is a diagram showing the magnitude by a scalar value, wherein that of the area a1 is 1.05, that of the area a2 is 2.35, and that of the area a3 is 0.
95. This value has a correlation with the orientation direction of the wood fiber in the natural wood board. The illumination light L is incident on the surface from the light source Ls at an incident angle θ, and the observer is either O1 located in the normal direction N of the surface or O2 in the direction of the specular reflection angle θ. When observing at the position of O1, the negative pattern of the specular reflection image is measured, or when observing at the position of O2, the positive pattern of the specular reflection image is measured (observed). FIG. 9B is an example of a perturbation pattern in the form of a fluctuation line segment assigned in correspondence with FIG. 9A. That is, FIG.
In (B), in the area where the scalar value is small, that is, in the areas a1 and a3 where the specular reflectivity is high, the direction of the line-shaped uneven pattern 4 is set to be substantially vertical and the angle from the y-axis direction is reduced. Is large, that is, in the region a2 having high diffuse reflectivity, the direction of the line-shaped concavo-convex pattern 4 is largely undulated right and left, and the angle from the y-axis direction is made large. In this way, the fluctuation line segment line-like uneven pattern is a pattern in which the direction of the line element, or the density of the line element, the width of the line element, and the like are changed according to the pattern of the amount of specular reflection light to be expressed. It is good. Note that the line segment drawn between the regions is drawn for convenience, and the amount of specular reflection changes continuously and smoothly between the regions. However, depending on the design expression, the amount of specular reflection may be discontinuously changed between the regions.

In FIGS. 8 and 9, parallel dotted lines (that is, the starting point of the next line element comes on the extension of the end of a certain line element, and there is no fluctuation in the parallel relationship between the dotted lines) Shows a plurality of line elements, but this is merely for convenience of illustration.

Next, with reference to FIGS. 10 to 12, an example of an actual fluctuation line segment linear uneven pattern will be described. FIG. 10 is an example of a streamline 7 of a direction vector field of a virtual plane on which a line element is arranged, that is, an example of an average direction of the line element, and is an example of a direction vector applicable to a grain of a board or the like. FIG. 11 is an example of an annual ring pattern 6 appearing on the board surface as a wood cut surface pattern that can be combined with the direction vector of FIG. And FIG.
FIG. 11 is a partially enlarged view showing a specific example of a fluctuation line segment linear uneven pattern 9 based on a pattern obtained by arranging line elements 4 with respect to the direction vector of FIG.

As shown in FIG. 12, the line-shaped uneven pattern 9 of the fluctuation line segment has an extremely small artificial touch as compared with the conventional line-shaped uneven pattern. For example, the line-shaped uneven pattern of the fluctuation line in FIG. 12 is different from that of waving in order to have an actual illuminated surface distribution, except that it is a conduit groove appearing on the surface of a real Rawan plywood. It is a pattern of an extremely natural feel as shown in an enlarged view of FIG.

As a method of forming the above-described fluctuation line segment line-shaped uneven pattern, for example, the following method can be used. One of them is a method of obtaining images by computer synthesis. A direction vector having anisotropy on a virtual plane can be obtained in the same manner as a conventional parallel line uneven pattern. Alternatively, actual natural wood boards are photographed from many directions, and the brightness distribution of the board surface is sampled as brightness of the board surface, and the gloss distribution (brightness and direction in which the board becomes brighter) is sampled. You can decide. At this time, to determine the direction vector,
As disclosed in Japanese Patent Application Laid-Open No. 10-287033, the direction vector may be determined by calculating the “fiber bend angle” indicating the orientation of the fiber of the gloss distribution wood by calculation.

In order to make the line length of a line element irregular,
When arranging on a virtual surface, it is randomized with a distribution having a predetermined average value and variance, and in order to have fluctuation in the parallel relationship, for example, fractal processing of the arranged line elements or deformation For example, a line element once arranged on a group of parallel stream lines as shown in FIG. 10 may be slightly rotated at random with a rotation angle distribution having a predetermined average value and variance around the center of the line element. When a fluctuation is given to the parallel relationship, a certain center value has the highest probability with respect to a coordinate value to be operated on a line element such as a normal distribution, and may decrease as the distance to both sides increases. Alternatively, the probability may be uniform within a range having a certain width on both sides with respect to a certain center value.

(Size of Line-shaped Uneven Pattern) Next, FIG.
Is (when formed as the first or second corrosion)
It is a conceptual diagram explaining the magnitude | size of the 1st or 2nd line-shaped concavo-convex pattern 31 or 32, such as a fluctuation line segment line-shaped concavo-convex pattern.
In the composite line-shaped uneven pattern, these are overlapped (a part having a deeper depth is also formed).

The line-shaped uneven patterns 31 and 32 such as the line-shaped uneven pattern of the fluctuation line are composed of a groove-shaped concave portion 1 and a convex portion 2. Varies depending on the use, but is usually in the range of 1 to 1000 μm.
If it is less than 1 μm, the effect of reproducing the illumination is insufficient, and if it is more than 1000 μm, each line element is conspicuous enough to be visually identified. Of course, there can be a design expression that makes each line element stand out to the extent that it can be identified, but it is better for the line element to be inconspicuous for reproducing the grain of wood. Therefore, in the case of reproducing the shine of the grain, the width of w1 and w2 is preferably in the range of 5 to 100 μm, more preferably 5 to 50 μm. Note that w1 and w2 are not always the same value in the fluctuation line segment line-like uneven pattern, as can be understood from the description with reference to FIGS. The depth of the concave portion (the difference between the height of the concave portion and the height of the convex portion) is generally about 1 to 100 μm.
m. In addition, the depth of the concave portion may be increased when w1 and w2 are large, or may be independently changed irregularly independently of the depth.

Note that in a line-shaped uneven pattern such as a fluctuation line segment line-shaped uneven pattern or a composite line-shaped uneven pattern, the cross-sectional shape of the concave portion (or the convex portion) is a square as shown in FIG. In the case of a shape, when expressing a unique glossiness such as expression of a grain of wood, mirror reflection by the bottom surface is utilized, so that the shape is preferable. However, the cross-sectional shapes of the concave and convex portions may be other shapes. For example, in the case of a complex linear uneven pattern that can be visually observed, the cross-sectional shape of the concave portion may be a quadrangle with rounded corners, a semicircle, a triangle, or other shapes. Also, depending on the size, the corners may be rounded during corrosion or shaping. Further, in the composite linear uneven pattern or the linear uneven pattern, it is optional whether a concave portion is formed as a line or a convex portion is formed as a line.

[Reproduced Texture by Composite Linear Concavo-convex Pattern] Typically, it is "shine" of a wood grain board, but there is no particular limitation. For example, it may be an expression of a texture such as a slab or a woven cloth. In particular, in the case where the fluctuation line segment line-like uneven pattern is adopted for both the first and the second, shining of the wood grain board or the like is preferable. In the case of using a line-shaped uneven pattern with fluctuation lines, it is also suitable for expressing the texture of the hairline.

[Actual Complex Line-shaped Concavo-convex Pattern] Here, the slightly different fluctuation line segment line-shaped concavo-convex pattern is defined by first and second patterns.
One specific method of creating the line-shaped uneven pattern will be described with reference to the conceptual diagram of FIG. First, as shown in FIG.
A plate material having a desired annual ring pattern 6 on a cut surface is prepared. Then, the distribution of illumination (the direction and amount of illumination) exhibited by the cut surface is photographed from a number of directions, sampled as a light and shade distribution of the brightness of the plate surface, and a virtual computer Of "fiber dip angle" defined as the angle formed by the fiber bundle cut surface that appears on the cut surface of a three-dimensional tree model composed of many fiber bundles oriented in the growth direction of wood, defined in a natural three-dimensional space Ask once. Then, a direction vector as shown in FIG. 10 is calculated from the fiber dive angle. Then, the arrangement density of the line elements is appropriately adjusted by the direction vector field, and the line elements are randomly arranged on the virtual plane. Next, for each of the arranged line elements, fractal processing is performed on the position coordinates on the line, and the line elements are deformed to give fluctuations in the parallel relation, and conceptually, FIG. One of the plane-view patterns of the fluctuation line segment line-like uneven pattern shown in FIG. As for the other planar view pattern of the fluctuation line segment line-like uneven pattern, the fluctuation line segment line-like uneven pattern is similarly created by the same direction vector field. However, if different random number sequences are used for randomization, as shown on the left and right of FIG.
Substantially different first and second line-shaped uneven patterns in plan view 31 and 32 are formed. At this time, the first and second
It is also preferable to rotate each line segment constituting the pattern in plan view at a slightly randomized angle, for example, about its center of gravity. The rotation angle is randomized, for example, within 1 degree at the maximum. And, these plan view patterns 31, 32
The directions in which the parallel lines extend are not completely the same, but are substantially the same, and are varied by the amount of fluctuation.

The planar pattern of the line-shaped uneven pattern created in this manner is created as image data on a computer, and scanning is performed while modulating the intensity (or on / off) of the laser beam with the image data. Then, a shaped plate is produced by a direct etching method in which the photosensitive resist film on the plate substrate is directly exposed to light, and development and corrosion processes are performed. Alternatively, the pattern in plan view is prepared as a photographic film (original) original, and the original is brought into close contact with the resist film on a plate substrate on which a photosensitive resist film has been previously formed, and is exposed with a mercury lamp, developed, and developed. A shaped plate is prepared by a normal etching method for performing corrosion.

FIG. 14 shows an example of a shaping plate for shaping a complex linear uneven pattern, in which the first and second linear uneven patterns are slightly different from each other. It is a perspective view which shows the uneven | corrugated pattern of the shaping surface of the shaping plate 20 at the time of using a plan view pattern of a pattern and partially overlapping both plan view patterns. In FIG. 14, the steps of the unevenness are emphasized and the side surfaces have a rectangular cross-section as a vertical surface so as to be easily viewed in a drawing display by a line drawing. In this figure, since the first and second corrosion depths are the same, the step of the unevenness consists of three level surfaces, F1, F2 and F3.

FIG. 15 is a perspective view showing a certain state of the complex linear uneven pattern 3 in the decorative material D actually obtained by the present invention. The line-shaped uneven pattern 3 in the decorative material D of FIG. 15 has a fluctuation line-shaped pattern slightly different to both the first and second line-shaped uneven patterns, similarly to the shaping plate 20 shown in FIG. This is an example of a case where a two-dimensional pattern is partially overlapped with a two-dimensional pattern using an uneven pattern. It is created for the purpose of illuminating wood grain. However, in the case of the cosmetic material, if the imprinting side is the observation side, the concavo-convex relationship is opposite to that of the imprinting plate. As shown in FIG. 15, in the decorative material D obtained by the present invention, the level surfaces V1 having different depths from each other.
And many grooves having a level surface V2. First and second
The overlapping part of the two-dimensional pattern of the line-shaped uneven pattern in the plan view is a groove represented by, for example, the contour of the deep level surface V1. In addition, only one of the first and second line-shaped concavo-convex patterns in which only one of the line portions does not overlap with each other in the plan view pattern is, for example, a shallow level surface V2.
The groove is represented by the outline of. Then, a portion in which the pattern in a plan view does not correspond to any line portion of the line-shaped uneven pattern is the level surface V3 which is the uppermost surface of the decorative material. The level surfaces V1, V2, V3 of the decorative material D correspond to the level surfaces F1, F2, F3 of the shaping plate 20. FIG.
In FIG. 5, similarly to FIG. 14, the steps of the unevenness are emphasized and the side surfaces are rectangular in cross section as a vertical surface so that the drawing is easy to see in the drawing display by the line drawing. However, FIG. 15 shows a three-dimensional computer graphic based on a two-dimensional line pattern of a two-lined line-shaped uneven pattern used for a composite line-shaped uneven pattern used for actually using a wood-grained decorative board. Image of a composite line-shaped uneven pattern obtained by forming a shaped plate virtually by two-stage corrosion by partially overlapping these patterns and shaping the applied object from the shaped plate Based on the above, the drawing is redrawn so that it is easy to see as a line drawing.

[Composition of Cosmetic Material] The composite line-shaped uneven pattern and the method of providing the same have been described above in various ways. A material, a layer configuration, and the like will be described.

(Substrate Forming Composite Linear Concavo-convex Pattern) As the base material of the decorative material, the substrate as an object to be applied with the composite linear concavo-convex pattern from a shaping plate is not particularly limited. Depending on the application and shape, a resin, a metal, a ceramic, or a composite such as a laminate or a mixture thereof is used. For example, in the resin, as the thermoplastic resin, polyethylene, polypropylene, polybutene, ethylene-propylene copolymer, olefin resin such as olefin-based thermoplastic elastomer, polybutylene terephthalate, thermoplastic polyester resin such as polyethylene terephthalate, vinyl chloride resin, There are acrylic resin, ABS (acrylonitrile-butadiene-styrene copolymer) resin, polyamide resin, fluororesin, etc., and as the curable resin, melamine resin, phenol resin, urethane resin, diallyl phthalate resin, unsaturated polyester resin, epoxy Thermosetting resin such as resin, polyfunctional acrylate,
There is an ionizing radiation curable resin such as an epoxy resin. Also,
Metals include aluminum, copper, and iron. Further, ceramics include glass and the like. As described above, a shaping plate is used as an embossing plate for a thermoplastic resin or the like, or a shaping plate is used as a molding die for a curable resin or a metal. To form

Note that these base materials can be used as base materials for decorative materials, even if a composite linear uneven pattern is not provided. Further, in the configuration of the decorative material, a backing base material (composite line-shaped uneven pattern which can be used in a composite form by further laminating, etc.) There is a fibrous base material that cannot be applied or is difficult to apply. For example, papers such as thin paper, high-quality paper, coated paper, Japanese paper, linter paper, kraft paper, and the like, and cloths such as woven cloth and non-woven cloth. When the shape of the decorative material is a sheet or a plate, the substrate is usually used as a single layer of a sheet (film) or a plate, or a laminate thereof.

The decorative material produced by the method for producing a decorative material having a line-shaped uneven pattern of the present invention and the decorative material of the present invention have a composite line-shaped concave-convex pattern having the above-described characteristics. For example, the layer configuration, material configuration, shape, and the like are not particularly limited. These points may be the same as those of various conventionally known cosmetic materials. The position of the composite linear uneven pattern is arbitrary, such as the surface such as the front and back surfaces of the decorative material, or the inner surface. Of course, the composite line-shaped uneven pattern is set to a position that is not concealed to such an extent that the reflected light can be used.

Therefore, first, the cosmetic material obtainable by the manufacturing method of the present invention and the cosmetic material of the present invention are illustrated in cross-sectional views in FIGS. 16 and 17 in some forms.

The decorative material D having the linear uneven pattern shown in FIGS. 16A and 16B has a configuration which can be said to be the basic shape thereof, and has the linear uneven pattern 3 on one surface of the base material 11. Configuration. The composite linear uneven pattern 3 may be on the front surface of the base material (FIG. 16A) or may be on the back surface (FIG. 16B). In these, the substrate is, for example, a sheet, a plate, a resin molded body, or the like. In the simplest example, it is a decorative material in the form of a decorative sheet in which the substrate 11 is a substrate sheet made of a transparent resin film, and only one of the composite line-shaped uneven patterns 3 is applied as a decorative treatment on one surface thereof. . Next, one configuration of the decorative material D shown in FIG. 16C is different from the configuration of FIG.
On the back side of the base material 11, a pattern layer 12a and a concealing layer 12b are formed as a picture layer 12 in this order. In this case, the substrate 11 is transparent.

Next, one configuration of the decorative material D shown in FIG. 16 (D) is a case where the decorative material D is used as a decorative sheet or the like. The colored resin layer 13, the transparent adhesive layer 14, the picture layer 1
2. The transparent protective layer 15 is laminated, and the composite line-shaped uneven pattern 3 is provided at the interface between the colored resin layer 13 and the transparent adhesive layer 14. FIG. 16E shows a configuration in which the transparent protective layer 15 further has an uneven pattern 16 (larger than the composite linear uneven pattern) on the front surface of the transparent protective layer 15 in the structure of FIG. 16D. It is. It should be noted that if a glittering pigment composed of metal foil powder or scale-like particles of mica coated with titanium dioxide is added to the colored resin layer 13, the anisotropic reflection and coloring of light due to the complex linear uneven pattern 3 Due to a synergistic effect with the diffuse reflection of light of the resin layer 13, clearer illumination can be reproduced.

(Decoration other than Composite Linear Concavo-convex Pattern) The decorative material manufactured by the present invention and the decorative material of the present invention may be those whose base material is decorated only with the composite linear concavo-convex pattern. For example, in the case of the configuration of FIGS.
1 is a case of a transparent resin base material which has not been subjected to any decoration processing. However, as a matter of course, the composite line-like concave-convex pattern unique to the present invention is extremely effective for, for example, natural reproduction of grain of wood. In particular, for the expression of grain of wood, a fluctuation line segment linear uneven pattern is suitable as the composite linear uneven pattern (the first and second linear uneven patterns that are the basis of the composite linear uneven pattern). Therefore, in such a case, it is preferable in terms of design expression to combine other decoration processing such as giving a pattern such as wood grain. Therefore, various decoration processes that can be applied to the decorative material will be described.

As a decoration treatment (other than the complex linear uneven pattern) applied to the decorative material, a coloring agent is added to the base material itself when the base material to be processed has transparency such as resin or glass. Color (transparent or opaque), pattern printing or metal thin film formation, shaping of uneven patterns other than the composite linear uneven pattern. These various decoration processes may be used in combination. Further, in the form of the decorative material, the object to be subjected to the decoration processing may be the same as or different from the object to be provided with the complex line-shaped uneven pattern. If different, the objects are laminated to form a form as a decorative material (see FIGS. 16D and 16E).

For example, in the decoration process described above, FIG.
In (A) and (B), there is a mode in which a coloring agent is added to the base material 11. Alternatively, it is the colored resin layer 13 which is one component of the decorative material in FIGS. 16 (D) and (E). In these cases, the processing object and the application object are the same. In addition, the colored resin layer 13 is also a base material that is an object to be provided with the composite linear uneven pattern. When the substrate is a resin or the like, the colorant is, for example, titanium white, zinc white, red stalk, vermilion, ultramarine,
Inorganic pigments such as cobalt blue, titanium yellow, graphite, and carbon black; organic pigments (or dyes) such as isoindolinone, Hansa Yellow A, quinacridone, permanent red 4R, phthalocyanine blue, induslen blue RS, and aniline black , Aluminum, brass, etc., metal pigments made of foil powder, titanium dioxide-coated mica, pearlescent (pearl) pigments made of foil powder, such as basic lead carbonate. The coloring may be transparent coloring or opaque (concealing) coloring. In particular, when a pigment having a large amount of light reflection such as a pearlescent pigment is added to a layer in contact with the surface on which the composite linear uneven pattern is formed, the effect of the composite linear uneven pattern can be emphasized. . Similarly, a similar effect can be obtained by forming a light-reflective metal thin film layer on the surface on which the composite linear uneven pattern is formed.

In the above-described example of the decoration process, FIG.
(C) The pattern layer 12 composed of the pattern layer 12a and the concealing layer 12b, and the formation of the pattern layer 12 and the like on the transparent protective layer 15 which is one component of the decorative material of FIGS. And so on. In the case of the decorative material shown in FIGS. 16D and 16E, the pattern layer 12 is usually formed on the surface of the transparent protective layer 15 as a base material (base sheet), and then formed into a sheet-like colored resin. A transparent adhesive layer 14 made of, for example, a two-component curable urethane resin, is provided between the layer 13 and the transparent protective layer 15.
It is obtained by laminating through. Therefore, in this case, the processing target and the application target are different. The picture layer is a printing ink layer, a metal thin film layer, or the like.

The printing ink (or paint) used for printing or coating for forming a picture layer is, for example, a binder.
One or more chlorinated polyolefins such as chlorinated polyethylene and chlorinated polypropylene, polyester resins, urethane resins, acrylic resins, vinyl acetate resins, vinyl chloride-vinyl acetate copolymers, and cellulosic resins are mixed. A material obtained by adding a known coloring agent or the like as described above to the above is used. Printing is performed by a known printing method such as gravure printing, offset printing, silk screen printing, and transfer printing from a transfer sheet. When the picture is entirely solid, it can be formed with a paint using a known coating method such as gravure coating. The metal thin film layer is formed of aluminum,
A film is formed by using a metal such as chromium, gold, silver, or copper by a method such as vacuum evaporation or sputtering. The metal thin film layer may be provided on the entire surface or partially in a pattern. Examples of the pattern of the picture layer include a wood grain pattern, a stone grain pattern, a cloth grain pattern, a squeezed pattern, a geometric figure, a character, a symbol, and a solid surface. In particular, the expression of the grain of wood is very suitable as the design expression by the composite line-shaped uneven pattern in the present invention, and therefore, the wood grain pattern is a preferable pattern for the pattern layer. For example, a combination of a grain pattern such as a cedar, a pine, a zelkova, a cypress, a teak, an oak or the like with a line-shaped uneven pattern is preferable. The pattern may be on the front side, the back side, the front and back sides of the base material, or between the layers in a multi-layered base material.

(Concavo-convex pattern other than the composite linear concavo-convex pattern) In the above-described example of the decoration processing, the composite composite linear concavo-convex pattern of FIG. This is the shaping of the uneven pattern 16 (larger than the uneven pattern). The uneven pattern 16 expresses, for example, unevenness such as a wood grain conduit, a stone plate surface uneven pattern (a cleavage surface of granite, etc.), and a texture of a cloth surface. In this case, the processing object and the application object are different objects. In the case where the uneven pattern 16 is a wood grain conduit, a further known wiping method (Japanese Patent Publication No.
There is also a decoration process in which a colored ink is filled according to Japanese Patent Application Laid-Open No. H10-260, etc.).

Further, as schematically illustrated in the enlarged view of the main part in FIG. 17, there is also shaping of a fine uneven pattern 17 smaller than the composite linear uneven pattern 3. The fine uneven pattern 17 in FIG.
Although the example is formed on the same surface as the composite line-shaped uneven pattern 3, it may be another surface. The fine concavo-convex pattern 17 is a concavo-convex pattern such as a sand pattern or mat surface formed by sand blasting or a hairline. In particular, as shown in FIG. 17, when the fine concavo-convex pattern 17 is provided on the same surface as the composite linear concavo-convex pattern 3 (in FIG. To the inside of the recess 1).
The design feeling of the composite linear uneven pattern can be adjusted by, for example, slightly reducing the specular reflectivity of the composite linear uneven pattern 3 to slightly reduce the shining feeling. In addition, in the case of a composite line-shaped uneven pattern formed by a fluctuation line segment line-shaped uneven pattern, the composite line-shaped uneven pattern itself can be used as a design expression of a hairline.

Although the above description has been made by distinguishing between the larger uneven pattern and the finer uneven pattern smaller than the composite linear uneven pattern, at least another uneven pattern is formed on the same surface as the composite linear uneven pattern. In the case of forming, it is only necessary that the unevenness of the composite line-shaped unevenness pattern does not disappear and disappear. For example, even if the width is the same on the same surface, if the depth is small, the effect of the composite linear uneven pattern can be prevented from disappearing. In addition, if the other uneven pattern is formed on a surface different from the surface on which the composite linear uneven pattern is provided, the effect of the composite linear uneven pattern is not lost, and the effect of other unevenness can be obtained. If so, the unevenness may be of the same size as the unevenness of the composite linear uneven pattern.

The above-described uneven pattern other than the composite linear uneven pattern may be formed by a method such as sandblasting, chemical matting, or hair run depending on the object to be formed. Also, as shown in FIG. 17, in the case of the same surface as the composite linear uneven pattern, use an embossing plate or the like that imparts the composite linear uneven pattern to form a combination of these on the plate surface. You may give.

(Overcoating Layer) As the decoration treatment, there is a treatment other than the above (1) for providing an overcoating layer on the surface of the decorative material. The overcoat layer is a colorless transparent or colored transparent layer, and is used for expressing a feeling of painting or a design by coloring. Of course, the overcoat layer is also used for the purpose of imparting surface durability, in addition to the above. However, when the composite line-shaped uneven pattern has a surface, the overcoat layer has a thickness (for example, about 3 μm) such that the unevenness of the compound line-shaped uneven pattern is not buried thereby.
And However, even if the unevenness of the composite line-shaped unevenness pattern is buried, specular reflection on the surface cannot be expected. If it is light-reflective because it has, it is also possible to obtain the effect of a line-shaped uneven pattern by utilizing the internal interface reflection by those. The overcoat layer is formed by applying a paint containing a binder such as an acrylic resin or a urethane resin and, if necessary, an ultraviolet absorber, a coloring pigment, an extender pigment, a lubricant and the like.

(Others) The basic structure of the decorative material obtained according to the present invention has been described above using the decorative material shown in FIGS. 16 and 17 as an example. However, the structure of the decorative material is limited to these descriptions. Not something. The decorative material has a layer structure,
The material, the combination of the decoration treatments, and the like may have various configurations similar to the conventionally known cosmetic materials.

[Use of the Cosmetic Material] The use of the cosmetic material produced by the present invention is not particularly limited, and the cosmetic material can be used for various purposes by utilizing its unconventional uneven pattern. For example, a wall,
For interior building materials such as ceilings and floors, or for exterior walls,
Exterior building materials such as fences, roofs, gates, gable boards, window frames, doors,
Surface cosmetics for fittings such as handrails, sills, Kamoi, etc., furniture for chests, etc., and surface cosmetics for cabinets for light electric / OA equipment such as TV receivers, vehicles such as automobiles and trains, aircraft,
It can be used for interior materials of various vehicles such as ships, various containers and materials such as cosmetic containers and accessories, packaging sheets, and other various applications such as miscellaneous goods such as premiums and accessories. The decorative material is used in various shapes such as a sheet, a plate, and a three-dimensional article. The decorative surface including the composite line-shaped uneven pattern may be a curved surface or the like in addition to the flat surface.

[0088]

The present invention will be described in more detail with reference to the following examples.

(Creation of a line-shaped concave-convex pattern) First, as a plan view pattern of the first and second line-shaped concave-convex patterns serving as a basis of the line-shaped concave-convex pattern, a pattern as illustrated in FIG. Was prepared as follows by sampling the illuminance of the cross section of a natural keyaki-grained wood board and artificially synthesizing an image using a computer. The sampling of the shine of natural trees
As described with reference to FIG. 9C, the angle of incidence θ of the illumination light from the light source Ls is fixed to 45 °, and the observer fixes the natural wood board in a horizontal direction with the normal direction O1 of the wood grain board. Rotation was performed at a pitch of 30 ° about the normal line N, and photographs were taken from a number of directions to obtain the illumination distribution. Then, the fiber diving angle was calculated by a computer from the illumination distribution, and the surface distribution of the directional vector of the virtual plane as shown in FIG. 10 was obtained from the fiber diving angle.

Next, as described with reference to FIG. 13, line elements were randomly arranged on the virtual surface, and fractal processing was performed on the position coordinates of the arranged line elements by the midpoint displacement method. On this occasion,
The anisotropy of the virtual plane is anisotropy waving in one direction as a whole (in the vertical direction in FIG. 11 as a main axis). Processing was performed. The amount of deformation was adjusted to an appropriate amount while observing the results. Next, the width (thickness) of the line element was made thicker at the center, thinner at the tip and end, and the thickness at the center was also randomized. Then, a pattern composed of a binary image of a line-shaped uneven pattern as shown in FIG. 12 was created. This was defined as a first line-shaped uneven pattern P1 in a plan view.

Next, using the same directional vector surface distribution as used above, a random line sequence was used, and a fluctuation line segment line-like concave / convex pattern was similarly formed by changing the random number sequence used. However, at this time, a random rotation was further performed on the line element (maximum 1 degree (the minimum is -1 degree) distributed positively and negatively at an average of 0 degree), and the fluctuation processing was further performed in a parallel relationship. Then, as shown in FIG. 12, a pattern consisting of a binary image of a fluctuation line segment line-like uneven pattern (slightly different from the above) was created. This was defined as a second pattern P2 in a plan view of the parallel line uneven pattern. The second line-shaped uneven pattern is the first
Although the direction in which the entire line extends is the same as the line-shaped uneven pattern, the length, width, shape, and position of the constituent line elements are different.

Next, as described with reference to FIG. 1, using the two-stage corrosion-processed patterns P1 and P2 as described above, a direct etching method using argon laser exposure was used to form a copper plate on the surface of a cylindrical iron core as a plate substrate. Irregularities were formed directly on the plated layer to form a shaped plate. As for the irregularities on the imprinting plate, the portion corresponding to the line element of the planar view pattern of the fluctuation line segment linear irregularity pattern, which is the basis of the composite linear irregularity pattern, has a convex portion (or a concave portion which is not the deepest). Make. The corrosion depth of the first and second corrosions was the same, and the line element in the linear uneven pattern formed by the first corrosion had a maximum width at the center of 40 to 60 μm and a maximum line length of 3 mm. The height difference (depth) of the unevenness is 30 to 40 μm. As the etching solution, an aqueous solution of ferric chloride was used.
Steps (F1, F2, F3) were obtained. The imprinting plate was subjected to sandblasting only before the first corrosion to form a fine uneven pattern on the entire surface of the plate substrate.

Then, in order to produce a decorative material having a structure as shown in FIG. 16C, a 100 μm-thick polypropylene-based olefin-based thermoplastic elastomer film was used as a base material 11 and a two-component curing type was applied to the corona-treated surface. The pattern layer 12a of the zelkova plate and a two-component curable urethane resin are bound to a vehicle using a urethane resin as a binder resin and a pattern ink obtained by adding a red pigment and a coloring pigment mainly composed of carbon black to a vehicle. A gravure print of the entire solid concealing layer 12b thereon with an ink obtained by adding a red pigment, a color pigment mainly composed of isoindolinone and titanium white to a vehicle as a resin, and a wood-grain pattern layer No. 12 was formed. The printing plate was prepared by photoengraving using the same wood grain board as the original as a sample obtained by sampling the line-shaped uneven pattern in a plan view. Next, the composite paper-shaped uneven pattern 3 as shown in FIG. Was obtained. In the obtained wood-grain pattern decorative material, the composite line-like uneven pattern expressed a shining close to a natural wood with a calm and extremely natural feeling that could not be expressed by the conventional line-like uneven pattern.

[0094]

According to the present invention, it is possible to produce a cosmetic material which can be expressed by a feeling of being calm and more natural and close to the actual grain of wood, instead of being sharp and glaring, which is an artificial technique. Also, it is possible to achieve a design expression utilizing the texture and the like created by an unprecedented natural surface reflection pattern, which is unique to the composite line-like uneven pattern provided. Note that the conventional 2
As the step corrosion, there is a technique in which the line width at the time of corrosion is changed with the same line-shaped uneven pattern so that the inside of the concave portion which becomes one line always has two levels of depth. However, in this case, there is only one kind of the concavo-convex pattern formed by the line-shaped concavo-convex pattern, and the effect of combining the patterns as in the present invention cannot be obtained. In addition, if both the first and second line-shaped concavo-convex patterns use a shaping plate in which the direction in which the lines extend is not completely the same but is substantially the same in a plan view pattern, for example, In the shining expression, the shining direction and its surface distribution are almost the same as the expression using a single line-shaped uneven pattern, but since there is also a slightly different second line-shaped uneven pattern, the contour of the distribution is slightly blurred. And the shine is calm. For this reason, as compared with the expression using a single line-shaped uneven pattern, the feeling becomes softer and the explicitness is reduced. Therefore, in the shine expression of the grain, the shine can be expressed with a more natural feeling. Further, when both the first and second line-shaped uneven patterns are not completely the same but substantially the same in the plan view pattern, the line-shaped unevenness is further increased. In the case where the pattern is a staggered line pattern, a feeling close to the actual grain of wood can be expressed with a calm and natural feeling rather than a sharp and glaring feeling. In addition, by combining the fluctuation line segments with the linear irregularities, the surface density of the line elements becomes dense (or sparse) in some places with the single fluctuation line segments and the linear irregularities, and the line becomes dark (or whitish). ), It is possible to express the grain of wood with a more natural feeling by making it less noticeable.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram for explaining a shaping plate and a complex line-shaped concavo-convex pattern used in the method for producing a decorative material of the present invention, by a method for forming a concavo-convex pattern on the plate.

FIG. 2 is a cross-sectional view conceptually illustrating a line-shaped uneven pattern in a general (in the case of one-step corrosion).

FIG. 3 is a plan view conceptually illustrating overlapping of first and second line-shaped uneven patterns in a plan view in a composite line-shaped uneven pattern.

FIG. 4 is a plan view conceptually illustrating a line-shaped uneven pattern with fluctuation lines.

FIG. 5 is a conceptual diagram illustrating a fluctuation (irregularity) given to a parallel relationship of a line element forming a planar pattern of a fluctuation line segment line-shaped uneven pattern.

FIG. 6 is a conceptual diagram illustrating the shape of a line element in a plan view pattern that forms a line-shaped uneven pattern with fluctuation lines.

FIG. 7 is a conceptual diagram illustrating the size of a cross section of a line-shaped uneven pattern such as a fluctuation line segment line-shaped uneven pattern.

FIG. 8 is a conceptual diagram showing various examples of anisotropy of a fluctuation line segment linear irregular pattern.

FIG. 9 is a conceptual diagram showing an example in which a surface distribution is provided for illumination and the like with a fluctuation line segment line-like uneven pattern.

FIG. 10 is a conceptual diagram showing an example of a direction vector for a straight grain such as a plate grain in a line-shaped uneven pattern with fluctuation lines.

FIG. 11 is a conceptual diagram showing an example of an annual ring pattern of a plate in combination with the fluctuation line segment line-shaped uneven pattern of FIG. 10;

12 is a partially enlarged view showing a specific example of a planar view pattern of a line element in a line-shaped uneven pattern with respect to a fluctuation vector with respect to the direction vector in FIG.

FIG. 13 is an explanatory diagram of a process of producing a line-like uneven pattern slightly different from a yearly ring pattern of a plate as a planar view pattern of each of the first and second line-like uneven patterns.

FIG. 14 is a perspective view (conceptual diagram) showing an actual composite line-like uneven pattern (using two fluctuation line segment line-like uneven patterns) of the imprinting plate.

FIG. 15 is a perspective view (conceptual diagram) showing an actual composite linear concavo-convex pattern applied to the decorative material (using a line-shaped concavo-convex pattern with two fluctuation lines).

FIG. 16 is a cross-sectional view illustrating some layer configurations of a decorative material obtained by the manufacturing method of the present invention.

FIG. 17 is a cross-sectional view conceptually illustrating a mode in which a fine uneven pattern smaller than the composite linear uneven pattern is further combined.

FIG. 18 is an explanatory view for explaining various examples of a conventional line pattern.

FIG. 19 is an explanatory diagram for explaining another example of the conventional line pattern.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Concave part (groove-shaped concave part) 2 Convex part 3 Composite line-shaped concave-convex pattern 4, 4a-4d Line element 5 A line connecting direction vectors of virtual planes in parallel relation in the vicinity of 6 Linear ring pattern 7 Virtual line element Surface direction vector (continuous line) 8 Conventional line uneven pattern 9 Fluctuation line segment Line-shaped uneven pattern in plan view (P
1, P2) 11 Base material 12 Picture layer 12a Pattern layer 12b Concealing layer 13 Colored resin layer 14 Transparent adhesive layer 15 Transparent protective layer 16 (Larger than composite linear irregular pattern) Concavo-convex pattern (conduit pattern etc.) 17 ( Fine uneven pattern (smaller than the composite linear uneven pattern) (grain pattern, etc.) 21 Plate substrate 22, 22a Photosensitive resist film 23 Imprinting plate for single-step corrosion 20 Imprinting plate 31 First linear unevenness Pattern planar view pattern (P1) 32 Second line-like concave-convex pattern planar view pattern (P2) 41a to 41c First line-like concave-convex pattern line element (P1) 42a to 42c Second parallel line Line element of uneven pattern (P2) a1 to a3 Area of certain surface D Cosmetic material F1, F2, F3 Level surface in shaping plate L Illumination light Ls Light source N Normal direction O1, O2 Observer P line element The virtual plane to be arranged P1 P2 A second line-like uneven pattern in a plan view Q A point on a line representing the directional vector of the virtual surface R A point on a line representing the directional vector of the virtual surface Vq → the point of the virtual surface at the point Q Direction vector Vr → Direction vector of virtual surface at point R V1, V2 Level surface of groove in decorative material V3 Level surface of outermost surface in decorative material w1 Concave width w2 Convex width θ Incident angle

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukimasa Iwamoto 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Naoki Kawai 1-chome, Ichigaya-cho, Shinjuku-ku, Tokyo No. 1-1 Dai Nippon Printing Co., Ltd. F term (reference) 4F209 PA02 PB01 PC05 PG02 PG11 PH27 PJ06 PN01 PN03 PN06 PN09 PQ11

Claims (4)

[Claims] 1. A first line-shaped concave-convex pattern having a line-shaped concave-convex pattern on a surface of a substrate, wherein the line-shaped concave-convex pattern does not completely overlap each other in a plan view. And a second line-shaped concavo-convex pattern, wherein the leveling surface in the depth direction is a composite line-shaped concavo-convex pattern having three or four levels, . 2. A method for producing a decorative material having a line-shaped uneven pattern, wherein a shaping plate for forming the line-shaped uneven pattern on an object to be applied is formed by a two-step corrosion to form a first line. After the corrugated pattern is formed on the surface of the plate base material, a second line-shaped concavo-convex pattern is further formed on the plate substrate so that the concavo-convex pattern does not completely overlap with the first line-shaped concavo-convex pattern. Then, using a shaping plate on which a composite composite linear concavo-convex pattern having at least two levels of depth by the first and second linear concavo-convex patterns is formed, the first object is applied to the object to be applied. A method for producing a decorative material having a line-shaped uneven pattern, which forms a composite line-shaped uneven pattern composed of a line-shaped uneven pattern and a second line-shaped uneven pattern. 3. A makeup having a line-shaped uneven pattern according to claim 2, wherein both the first and second line-shaped uneven patterns have substantially the same extending direction, though not completely the same. Material production method. 4. A method according to claim 1, wherein each of the first line-shaped uneven pattern and the second line-shaped uneven pattern fluctuates a large number of line elements having irregularly different line lengths between adjacent line elements. 4. The method for producing a decorative material having a line-shaped uneven pattern according to claim 3, wherein the line is a line-shaped uneven pattern composed of patterns arranged so as to have a parallel relationship.