JP2003341297A - Decorative material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative material which enables a photoluminescent pigment with a large particle size to be properly transferred onto a base material, so that a highlight part can have preferable reproducibility. <P>SOLUTION: A photoluminescent pattern layer 22 is formed by transferring photoluminescent ink onto the base material 21 through the use of a gravure printing plate in which an area of each cell (dot) is made uniform and in which distribution densities are different from one another in accordance with shading to be expressed. Additionally, a normal pattern layer 23 is formed by transferring normal ink through the use of the gravure printing plate in which the position and distribution density of each cell are made constant and in which the areas of the cells are made different from one another in accordance with the shading to be expressed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative material used for decorating the surface of a building material product.

[0002]

2. Description of the Related Art Conventionally, various types of decorative materials have been used for decoration of building material products. this house,
A decorative material having gloss by printing with a glittering ink such as a pearl ink is particularly preferred and often used.
In the case of expressing a pattern having a gray scale in a cosmetic material having such a gloss, it is usually printed by a gravure printing method. The gravure printing method is a method in which cells are formed on a gravure cylinder, ink is poured into the cells, and the ink is transferred to a base material such as a sheet for printing. The gravure printing method is broadly divided into a method of expressing shading by the size of a cell (halftone dot) area such as a net gravure method and a mechanical engraving gravure method, and a frontage (area) of a cell like a conventional gravure method. There are two methods, that is, a method of expressing the lightness and darkness by the depth of the cell, which is fixed.

[0003]

The bright pigment is a flaky foil piece and has a large average particle size of about 10 to 30 μm. Therefore, when printing using glitter ink, in the mesh gravure method or the mechanical engraving gravure method, the cell area becomes narrower and the depth becomes shallower in the highlight portion, and therefore, in the highlight portion, the pigment is not present in the cell. Cannot be filled. Further, in the conventional gravure method, the frontage of the cell is as wide as the shadow portion even in the highlight portion, but the cell is not filled with the pigment because the cell depth is shallow. If the highlight portion is not sufficiently filled with ink, the ink will not be transferred well onto the substrate that is the material to be printed, and a desirable pattern cannot be obtained.

Therefore, printing was carried out using a gravure printing plate having a uniform cell area as disclosed in JP-A-8-146594. However, it was not always possible to reliably transfer the large particle size pigment to the highlight portion on the substrate.

In view of the above points, the present invention makes it possible to transfer a bright pigment having a large particle size onto a substrate well, and as a result, to provide a cosmetic material having preferable reproducibility in a highlight portion. The task is to do.

[0006]

In order to solve the above-mentioned problems, in the present invention, the structure of the decorative material is composed of an ink containing a pigment on a base material and has a glittering property and a gradation of dark and light in density. The glittering picture layer having the above is formed, and the glittering picture layer is composed of an aggregate of cells made of ink, and the density of the glittering picture layer is per unit area of the cells made of the ink. Is represented by the size of the number density, and the pigment is a bright pigment.

According to the present invention, a glittering picture layer formed of an ink containing a glittering pigment is provided, and the size of the ink cells in the glittering picture layer is made uniform to express the lightness and darkness by the number density per unit area. By doing so, it is possible to successfully transfer the bright pigment having a large particle size onto the base material, and as a result, it is possible to obtain preferable reproducibility in the highlight portion.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment) First, a decorative material according to a first embodiment of the present invention will be described. In the first embodiment, the gravure printing plate disclosed in JP-A-8-146594 is used. FIG. 1 is a diagram showing a state in which a cell array of a gravure printing plate disclosed in JP-A-8-146594 is viewed from the surface. As shown in FIG. 1, in the gravure printing plate used in the first embodiment, the cell area is constant, and in the shadow part (high density part), the middle part and the highlight part (low density part), the unit is The number of cells per area, that is, the cell density is different.

The gravure printing plate shown in FIG. 1 has a constant cell area and reproduces density gradation by changing the distribution density of cells.
The M-like sequence is shown. The cell array shown in FIG. 1 is based on the so-called Frequency Modulation concept in which density is reproduced by the frequency of providing cells having a certain area, that is, the distribution density of cells (modulation of array period), and is hereinafter referred to as an FM modulation method. The cell array position in this case is characterized by being random at least in the highlight part and the middle part. Letting Px be the period in the x-axis direction and Py in the y-axis direction in the cell array coordinate system (x, y), the two-dimensional cell array period (Px,
Py) does not have a constant value, and Px and Py are random variables according to predetermined probability density functions f (Px) and f (Py). Examples of this function include a normal distribution (Gauss distribution), a binomial distribution, and a Poisson distribution, which may be appropriately selected and used. However, f (P
It is preferable that x) and f (Py) have the same functional system.
That is, the cell array periods Px and Py have the probability density function f (P
x), f (Py) average value (corresponding to the period of the carrier wave in FM modulation) mx, my as the center, standard deviation σ
It is distributed in a predetermined range evaluated by x and σy. Moreover, the distribution method is random.

The distribution density of the cells 1 increases as the shadow portion is approached, and since the above random arrangement continues, the cells come into contact with each other or overlap each other. Difficult to form. Therefore, in the present invention, the following restrictions are placed on the arrangement of cells in the shadow portion, and the shadow portion may be any of the following.

(1) As shown in FIG. 1, at the limit of the shadow portion (final point of gradation), the cells are aligned with a predetermined bank width. That is, after entering the shadow portion, the FM-like array of cells gradually shifts to the AM array.

(2) As shown in FIG. 2, a collective area 3 having a predetermined size is provided, and the collective areas 3 are randomly arranged so as not to come closer to each other than a predetermined interval. Randomly distributed only within. Therefore, in the limit, the cell fills the gathering region 3, and the gathering region is in a state of being closely packed as shown in FIG. However, depending on the density gradation to be reproduced, it is not necessary to set the shadow part to the extreme state as described above, and the shadow part is in a density state in which cells do not yet contact each other or a stage in which the gathering regions 3 are randomly arranged. You may end it with. In such a case, only flat gradation can be reproduced, but it is effective for reproducing the main details of the highlight part and the halftone part.

The decorative material according to the present invention can be obtained by printing with a brilliant ink using the gravure printing plate as described above. Specifically, the glitter ink is supplied to the plate surface of the above-mentioned gravure printing plate, the glitter ink is scraped off with a doctor blade to fill the glitter ink into the cells, and then this glitter ink is the material to be printed. It is obtained by applying a printing pressure to the base material and transferring it.

In the present invention, the area of the cell is fixed so that the particles of the glitter ink are filled in the cell even in the highlight portion. Therefore, it is necessary to specify the relationship between the cell size and the particle diameter. In this embodiment,
When the shape of the cell is circular, the diameter of the cell is specified to be larger than the average particle size of the glitter ink, and when the shape of the cell is polygon, the diagonal length of the cell shape is the glitter ink. It is specified to be larger than the average particle size of. Here, the average particle size of the glitter ink is evaluated by the circumscribed sphere diameter of the pigment particles or the diagonal length L _MAX .

FIG. 3 shows a cross-sectional view of a decorative material obtained by printing a substrate with glitter ink. In FIG. 3, 10 is a decorative material, 11 is a base material, and 12 is a glittering pattern layer made of glittering ink. Decorative material 1 as shown in FIG.
When 0 is viewed from the surface, the glittering ink is transferred well to the highlight portion, so that the preferable reproducibility is obtained in the highlight portion.

By the method as described above, a decorative material having a desirable gloss even in the highlight portion was obtained. However, when an ordinary pattern is printed in combination with the above-described glossy pattern, the gravure printing plate shown in FIGS. 1 and 2 has the following problems.

The gravure printing plate shown in FIGS. 1 and 2 has a random cell distribution as described above. Therefore, the glitter ink is originally bright and dazzling, and causes unevenness of vision, and the unevenness of color is less noticeable. Therefore, in the case of a normal pigment, the unevenness of color is noticeable. On the other hand, the conventional gravure printing plates, that is, the cells (halftone dots) that have been used by the screen gravure method, mechanical engraving gravure method, and conventional gravure method.
The position is fixed, and when printing is performed using a printing plate that expresses shading by adjusting the amount of ink transferred in the area or depth of each cell, as described above, the bright pigment sufficiently fills the cells. Although this is not possible, ordinary inks have a small average pigment particle size and good dispersibility, so that the inks are transferred smoothly even in highlight areas.

(Second Embodiment) Therefore, in the second embodiment, the normal ink is printed using a printing plate having a constant number of cells per unit area as shown in FIG. It is characterized in that the glitter ink is printed using a printing plate having a constant cell area. The resulting decorative material is as shown in FIG. In FIG. 5, 20 is a decorative material, 21 is a base material, 22 is a glittering picture layer made of a glittering ink, and 23 is a normal picture layer made of ordinary ink. The base material 21 and the glittering pattern layer 22 in FIG.
It is the same as the base material 11 and the glittering pattern layer 12 shown in FIG. When the decorative material 20 as shown in FIG. 5 is viewed from the surface, the glitter ink is successfully transferred to the highlight portion, so that the preferable reproducibility can be obtained in the highlight portion, and the designability is high by combining with the ordinary ink. A cosmetic material is obtained. In particular, a preferable decorative material can be obtained by using a wood grain pattern as a normal pattern and expressing the luster of the tree with a glittering pattern.

(Brightening pigment) The pigment applied in the present invention,
The base material and the like are not limited to those in the above embodiment, and various modifications are possible. For example, as the bright pigment, a metal pigment made of foil powder such as aluminum or brass, a titanium dioxide-coated mica, a pearlescent pigment made of foil powder such as basic lead carbonate, or the like can be used.

(Ordinary pigments) As the ordinary pigments, inorganic pigments such as titanium white, zinc white, rouge, vermilion, ultramarine blue, cobalt blue, titanium yellow, yellow lead, carbon black, isoindolinone, Hansa Yellow A Organic pigments (or dyes are also included) such as quinacridone, permanent red 4R, phthalocyanine blue, induslen blue RS, and aniline black can be used.

(Characteristics of Base Material) As the base material, a thermoplastic polyester resin such as polyethylene terephthalate, polybutylene terephthalate or polyethylene naphthalate,
Polyethylene, polypropylene, polymethylpentene,
Polyolefin resin such as olefin thermoplastic elastomer, resin sheet such as polyvinyl chloride, polycarbonate, polystyrene, ABS, acrylic resin, thin paper, high quality paper, kraft paper, paper such as Japanese paper, glass, vinylon, polyester, cellulose, etc. Nonwoven fabrics made of fibers, woven fabrics, metal foils of aluminum, iron, copper or the like can be used. Further, the shape of the base material may be a sheet, a plate material, or another three-dimensional object.

(Cell Shape) The planar shape of the cells in the gravure printing plates shown in FIGS. 1 and 2 is not necessarily a regular square, but may be a rectangle, a diamond, a polygon, a circle, an ellipse, or the like. Good. It is desirable that the diagonal length or diameter of the cell 1 is 20 to 400 μm (needless to be larger than the particle size of the bright pigment) and the bank width is 10 μm or more.

(Manufacturing Method) Known so-called gravure plate-making method, direct gravure plate-making method, laser beam engraving method and the like can be applied to the so-called gravure plate-making method for forming cells on the gravure cylinder by the arrangement described above. Further, copper, iron, ceramics, synthetic resin or the like can be applied to the material of the plate, and the plate may have a cylindrical shape or a flat plate shape. To create a film original, digitize the image gradation with a scanner, import it into a personal computer, use application software to correct and collect the plate, and output the halftone dots on the film with an image setter. It suffices to install software that makes a simple cell (halftone dot) arrangement. Also, instead of the film, the photosensitive resist film coated on the surface of the cylinder is exposed (output) by scanning with a light beam (laser light, etc.) and developed to develop the resist film in the cell (halftone dot) portion. The cells may be formed by removing and then corroding.

[0024]

The present invention will be described in more detail with reference to the following examples. First, a gravure printing plate for printing the glitter pattern layer is prepared. Specifically, after applying a photosensitizer to a cylindrical cylinder (plate cylinder), laser exposure is performed with ultraviolet rays. As a result, halftone dots are formed. In this embodiment, two printing plates, one for printing the glittering pattern layer and the other for printing the normal pattern layer, are prepared. Since the printing plate for printing the glittering pattern layer has a uniform halftone dot size, it is adjusted by the distribution density.
A printing plate for printing a pattern layer usually has a constant distribution density and changes the size of halftone dots. When two gravure printing plates are obtained in this way, they are rotated around the axis. Further, the long strip-shaped substrate sheet is supplied at the same speed as the peripheral speed of the plate cylinder. As the cylindrical plate cylinder, basically, the same material, similar structure, and similar manufacturing method as those of the known intaglio and gravure plates may be used. As the plate material, metals such as iron and copper are usually used. Rotational driving around the axis of the plate cylinder may be performed by using the same mechanism and method as those of a normal transfer type gravure printing machine. In order to adhere the base material sheet to the plate cylinder, it is pressure-bonded with a roller (pressure roller) made of rubber, metal or the like. Further, when the base material sheet is peeled from the plate cylinder, the base material sheet is pressed by a roller (peeling roller) made of rubber, metal or the like and peeled. As the base material sheet, a long and strip-shaped one is used. Such a substrate sheet is unwound from an unwinding roll (supply roll), and after printing, is wound up by a winding roll (paper discharge roll).

[0025]

As described above, according to the present invention,
On the base material, a glittering picture layer composed of an ink containing a pigment and having a glittering property and having a gradation of light and shade is formed, and the glittering picture layer is composed of an aggregate of cells composed of an ink. The density of the glittering picture layer is expressed by the size of the number density per unit area of the cells formed by the ink, and the pigment is configured as a glittering pigment. It is possible to transfer the functional pigment onto the substrate well, and as a result, it is possible to obtain preferable reproducibility in the highlight portion.

[Brief description of drawings]

FIG. 1 is a diagram showing an FM-like cell arrangement of a gravure printing plate used for printing glitter ink, in which cells of a shadow portion are aligned.

FIG. 2 is a diagram showing an FM-like cell array of a gravure printing plate used for printing glitter ink, in which cells in a shadow portion are not aligned.

FIG. 3 is a cross-sectional view of the decorative material according to the first embodiment.

FIG. 4 A of a gravure printing plate used for printing ordinary ink
It is a figure which shows M type cell arrangement.

FIG. 5 is a cross-sectional view of a decorative material according to a second embodiment.

[Explanation of symbols]

1 ... cell (dot) 2 ... Embankment 10, 20 ... Decorative material 11, 21 ... Base material 12, 22 ... Glittering picture layer 23 ... Normal pattern layer

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 4F100 AA21 AB01 AB33 AK41 AT00A                       BA02 BA03 BA07 BA10A                       BA10C CA13B CA13C DG10                       DG11 EH46 EJ54 GB07 HB00B                       HB00C HB01 HB31 HB35B                       HB35C JN21B JN22

Claims (5)

[Claims] 1. A glittering picture layer made of an ink containing a pigment and having a glittering property and having a gradation of light and shade in density is formed on a base material, and the glittering picture layer is made of an ink. It is composed of an aggregate of cells, the density of the glittering picture layer is expressed by the size of the number density per unit area of the cells formed by the ink, and the pigment is a glittering pigment. Cosmetic material characterized by. 2. The decorative material according to claim 1, wherein the bright pigment is a flaky foil piece. 3. The decorative material according to claim 1, wherein the bright pigment has an average particle diameter smaller than a cell diameter. 4. The decorative material according to any one of claims 1 to 3, further comprising a normal pattern layer containing a normal pigment other than the bright pigment on the substrate, and the normal pattern layer is an ink. The decorative material is characterized by comprising an aggregate of cells each of which is represented by the size of the area of the cells formed by the ink. 5. The decorative material according to claim 4, wherein the glittering pattern layer expresses the luster of a tree and the normal pattern layer expresses a wood grain pattern.