JP2000006598A - Embossed cosmetic material - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an embossed decorative material showing a high texture and design of a wood grain conduit. SOLUTION: This decorative material is provided with a plurality of elongated wood-grain conduit groove-shaped recesses formed in a specific direction on a surface of a base material, wherein the recesses are sequentially arranged in one of the longitudinal directions. A first depression A that gradually increases in depth and a second depression B that gradually increases in multiple stages in the opposite direction are mixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embossed decorative material formed by embossing a groove of a wood-grain conduit which enables a high degree of design expression.

[0002]

2. Description of the Related Art Proposal of an embossed cosmetic material has been attempted to reproduce the texture of a wood channel groove of a natural wood board in a more realistic manner, not to mention its planar shape, but to the depth of the wood channel groove. Has been made. JP-A-4-
Japanese Patent No. 308799 discloses that a plurality of photoetching processes are performed on an embossed plate substrate surface using a plurality of pattern masks formed from individual wood grain cross-sectional patterns and images obtained by gradually reducing the cross-sectional patterns. Embossing plate, and embossing of the top substrate sheet using the embossing plate, embossed decorative material having a multi-step concave portion in the shape of a wood-grain conduit deeper toward the center, and a method for producing the same Is disclosed. International Publication WO95 / 21060
In the publication, a three-dimensional virtual conduit groove whose deepest part is eccentric to one end of the wooden conduit groove is calculated from only the information of the planar cross-sectional pattern obtained by replacing the wooden conduit groove with the approximate elliptical model, Of an embossing plate obtained by forming a patterning mask with contour lines at equal depths at different depths and using each mask sequentially from the shallower depth to the multi-step embossing plate base material surface and embossing decorative material And a method of manufacturing the same. FIG. 5 is an enlarged schematic view of a plane of a conventional embossed decorative material having a depth change in a wood grain conduit groove. In Japanese Patent Application Laid-Open No. 4-308799, the depth change is as shown in FIG. The depth becomes deeper toward the center of the grain conduit groove, and the center of the contour in plan view at each depth step is concentric. In addition, WO95 / 2
In Japanese Patent Publication No. 1060, as shown in FIG.
The contour shape in plan view at each depth step is expressed in one direction (+ x
Direction), and becomes deeper toward one end of the wood grain conduit groove. And the change of the depth in all the wood conduits is aligned in the same direction. That is, in FIG. 5B, the depth is sequentially increased in the + x direction.

[0003]

However, the texture provided by such a conventional embossed decorative material 30 is such that even if the wood grain groove is weak for a wood grain pattern such as a hairline, the wood grain groove has strength, There is a problem that the finish is too monotonous for wood grain patterns such as oak, oak, and buna with accents. The present invention has been made in view of the above-described problems, and has as its object to provide an embossed decorative material that enables a highly sophisticated design expression.

[0004]

The embossed decorative material according to the present invention, which has been made to solve the above-mentioned problems, has a plurality of elongated wood-grain conduit grooves formed on the surface of a base material so as to be oriented in a specific direction. A decorative material, wherein the concave portion gradually deepens in multiple stages in one direction in the longitudinal direction, and a first concave portion gradually deepens in multiple stages in the opposite direction in the longitudinal direction. The configuration is such that the second concave portion is mixed. Further, the recess may be filled with a coloring ink.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The embossed decorative material produced by the present invention is a sheet or a plate having a surface having a concave and convex pattern formed thereon by embossing or the like. The concavo-convex pattern is composed of an aggregate of concave portions in a wood-grain conduit groove shape as described later. As the material of the substrate, usually, polyethylene, polypropylene, polyolefin resin such as olefin thermoplastic elastomer, polymethyl methacrylate, polybutyl methacrylate, acrylic resin, thermoplastic polyester resin, thermoplastic urethane resin, polyvinyl chloride,
Thermoplastic resins such as ABS and polystyrene, melamine resins, unsaturated (thermosetting) polyester resins, thermosetting resins such as two-pack curing (thermosetting) urethane resins, radical polymerizable unsaturated acrylates (or methacrylates),
Alternatively, an ionizing radiation-curable resin obtained by crosslinking a cationic polymerization type epoxy resin with ionizing radiation (ultraviolet rays, electron beams, etc.) is used. The substrate is generally a laminate as shown in FIG. 4, but may be a single layer. In addition, as applications, interior materials of buildings such as walls, floors, ceilings, doors, window frames, door frames, surface materials of fittings such as handrails, surface materials of housings of home appliances such as television receivers, Surface materials for furniture such as wardrobes, surface materials for containers such as boxes, interior materials for vehicles, interior materials for ships, etc. As shown in FIG. You.

FIG. 1 is an explanatory view of a concave portion embossed in the shape of a grain conduit groove of an embossed decorative material according to the present invention. FIG. 1A is a schematic plan view of a concave portion of the embossed decorative material 20 according to the present invention. The pattern of wood grain conduit grooves appearing on the surface of the actual natural wood board as viewed from the front, that is, the grain pattern of the wood grain conduit in which only the conduit part is extracted (plan view pattern)
At first glance, it looks irregular, but since a plurality of elongated elliptical deformation patterns extending in substantially the same direction are oriented, the individual wood grain conduit cross-sectional patterns are shown below with a schematic elliptical pattern model. And As shown in FIG. 1A, the plurality of recesses in the shape of a wood grain conduit to be embossed on the surface of the embossed decorative material 20 according to the present invention have a specific direction (vertical direction in the figure, that is, the x-axis direction. Are referred to as a longitudinal direction.), And the concave portion A has a depth gradually increasing in one direction in the longitudinal direction (downward in FIG. 1A, that is, + x direction). In accordance with the opposite direction (upward in FIG. 1A, that is, the −x direction), the recesses B whose depth gradually increases are formed in a mixed manner. FIG. 1B is a cross-sectional view of the recess A in the longitudinal direction (x-axis direction) of x1-x1, and FIG. 1C is a cross-sectional view of the recess B in the longitudinal direction of x2-x2. Both are cross-sectional views of FIG. 1A as viewed from the left. FIG.
As is clear from (b) and (c), the direction of the depth change is reversed in the recess A and the recess B. As shown in FIG. 1 (a), each concave portion of the embossed decorative material 20 according to the present invention is formed such that, for example, three types of oblong patterns A1, A2, A3 or B1, B2, B3 having different sizes are eccentric. As shown in FIGS. 1 (b) and 1 (c), the depth of the concave portion where the elliptical pattern, A1, A2, A3 or B1, B2, B3 are all overlapped, is processed. The depth of the concave portion where the two types of patterns A2, A3 or B2 and B3 overlap is the middle, and the depth of the concave portion due to the one type of pattern A1 or B1 is the smallest. The number n of oblong patterns forming the wood channel groove-shaped depressions of the embossed decorative material 20 according to the present invention.
May be two or more, and if it is desired to form a fine-grained multi-step recessed portion, this can be achieved by further increasing the number n of the oblong patterns.

FIG. 2 is an explanatory view of a mixed state of two types of recesses A and B on the embossed decorative material surface according to the present invention.
FIG. 2 (a) shows the case of plate-grain, FIG. 2 (b) shows the case of straight-grain,
The depression A is indicated by a solid line, and the depression B is indicated by a dotted line. The recess A and the recess B, which are formed on the processing surface of the embossed decorative material 20 according to the present invention and oriented in a specific direction and whose depth change directions are opposite to each other, are, of course, as shown in FIG. May be arranged at random, but it is generally preferable to use each of them in a designated area. For example, as shown in FIGS. 2A and 2B, a configuration in which the recesses A and the recesses B are alternately arranged in the area of the early wood portion 9 with the late wood portion 8 as a boundary (in this case, the late wood portion) In addition to the concave portion, the concave portion A may be distributed to the late material portion 8 and the concave portion B may be distributed to the early material portion 9. (Not shown) By mixing the two kinds of recessed portions A and B in this way, compared with the conventional embossed decorative material having a depth change only in one direction, the wood pattern is matched to the conventional one. It has a touch of texture that cannot be seen and can be finished into an embossed decorative material with a high degree of design. The embossed decorative material according to the present invention is particularly effective when applied to a wood grain pattern in which wood conduit grooves such as oak, oak, and bunches are dense and accentuate.

FIG. 3 is a cross-sectional view of the embossed decorative material according to the present invention in an embossed basic sheet state. Depressed parts A and B
The transparent top substrate sheet 1 embossed is generally laminated with a base substrate sheet 2 having a wood pattern printing ink layer 3, and finally, the depressions A and B are brown and black by a known wiping method. Wiping ink layer 4 is formed. By this wiping method, the change in the depth of the concave portion can be further visually distinguished, and the effect of the design property according to the present invention can be further enhanced. As will be described later, the printing ink layer 3 formed in accordance with the recesses A and B to be processed and processed from the binarized image obtained by separating only the wood grain conduit cross-sectional pattern from the manuscript image of the natural wood board and the wood pattern of the manuscript image In tune with the original positional relationship.

FIG. 4 is an explanatory view of a method for producing an embossed decorative material according to the present invention. Hereinafter, a method for manufacturing the embossed decorative material 20 according to the present invention will be described step by step. First, the process starts from a printing pattern image creation process. In this process, a natural wood board manuscript image is once photographed on a photosensitive film by silver halide photography or the like, and the CEPS (COLOR ELECTRONIC PREVIEW) is taken.
PRESS SYSTEM) scans the image using a plate making scanner, converts it into a photoelectric signal, reads it as a digital signal, and stores it on a hard disk. Alternatively, digital image data captured using a digital camera may be directly input to CEPS. Next, only the wood grain conduit cross-sectional pattern is extracted from this image data as a binary image, taken out on the display screen, and subjected to endless correction according to the circumference of the embossing plate, thereby creating a wood grain conduit cross-sectional pattern file. Thereafter, the elliptic patterns A1, A2--An and B1, shown by computer processing based on the input data of the wood grain conduit cross-sectional pattern, are used.
A pattern for printing a concave portion of a deformed ellipse corresponding to B2-Bn can be manufactured. One method is to convert the eye conduit cross-section pattern (deformed elliptical shape) into an approximate ellipse obtained by obliquely cutting a wooden conduit that is once considered to be an elliptic cylinder or a cylinder. Numerical modeling is performed to specify a virtual wood-grain conduit groove, and a plurality of predetermined depths are specified for the virtual wood-grain groove and contour lines S1, S2 and S2 based on these are designated.
--- Sn is extracted, and the area surrounded by S1 is defined as A1 and the areas surrounded by B1 and S2 are defined as A.
An area surrounded by No. 2, B2, and Sn is configured as An and Bn, and this image is inversely transformed into an original modified long ellipse image to be an image file as a burn-in pattern image.
Also, the late material portion 8 of the two types of recesses A and B as shown in FIG.
The distribution to the early wood part 9 can also be processed by designating the respective positions in accordance with the image information of the grain or board previously input to the computer. That is, for example, in FIG. 2, one of the concave portions A or B (whether the depth changes in the + x direction or the −x direction) is imaged in a specified early wood portion 9. It can be fitted by digital processing.

FIGS. 4 to are explanatory views of a process for producing an embossed plate by multi-step photoetching of an embossed decorative material according to the present invention. First, a modified printing pattern image data corresponding to the deepest elliptical pattern A1 (B1) from the above-described printing pattern image file is embossed on a negative resist photosensitive film previously formed by a direct exposure apparatus using laser beam scanning. Light is output onto the copper plating layer of the material 5 and is exposed while modulating the light beam for scanning the surface with the burn-in pattern image data (ON-OFF of the beam), and is baked and developed, and the photosensitive film in the unexposed area is washed. By removing, the surface of the embossing plate base material 5 having the resist layer 6-1 as shown in (5) is obtained. In this state, when the non-resist surface is corroded in the direction of the arrow using ferric chloride or cupric chloride to perform etching, the non-resist portion of the embossed plate base material surface is etched as shown in FIG. (Not shown in the figure) while etching to a predetermined depth D1.
The resist layer 6-1 is peeled off, and on the embossed plate base material 5 on which a resist photosensitive film is formed on the entire surface in the same manner as the first time, this time corresponds to the next deeper oval pattern A2 (B2). Similarly, the deformed printing pattern image data is output, printed, developed, and the non-exposed portions are washed and removed to obtain a resist layer 6-2 as shown in FIG. In this state,
As shown in FIG. 7, etching by the second corrosion is performed until a predetermined depth D2 is reached. In addition, the longest elliptical pattern A
3 (B3), using a resist layer 6-3 formed based on the deformation printing pattern image data,
The third etching is performed until the predetermined depth D3 is reached. As described above, the embossing plate E whose height changes in three stages as shown in the following can be manufactured. . Finally,
The entire surface of the embossing plate E is finished with chrome plating. The plating is preferably mat (matte) plating, or the entire surface of the embossed plate is roughened by sandblasting and then plated to matte the surface of the embossed plate (particularly the surface other than the wood grain conduit cross-sectional pattern). The surface is rough. The embossing plate used in the present invention may be cylindrical (cylindrical) or flat.

Next, using the embossing plate E prepared by the above-described manufacturing method, embossing is performed to form an embossed base sheet 10 composed of a top base sheet 1 and a base base sheet 2 as shown in FIG. can do. As a typical method for producing the embossed base sheet 10, there is a method in which the base sheet 10 made of a thermoplastic resin such as a polyolefin resin or polyvinyl chloride is heated and softened, and the embossed plate E is pressed against the surface thereof. The method is further classified into (1) a single-layer sheet (only a top substrate sheet) is heated and softened, and the embossing plate E is pressed or
(2) Embossing the top base sheet 1 and laminating it on the base base sheet 2 to form a base sheet of a two-layer laminate, or (3) Topping by hot pressure when pressing the emboss plate The substrate sheet 1 and the base substrate sheet 2 are heat-fused to form a two-layer laminate by doubling embossing for simultaneously embossing and laminating, or the top substrate sheet 1 is melt-extruded from a T-die. The embossing plate is also brought into contact with an embossing plate cylinder also serving as a cooling roll, and is embossed. The boss is embossed with a base substrate sheet 2 inserted on the back surface of the top substrate sheet 1 to perform doubling embossing in-line to form a two-layer laminate. There is a way to do that. As another method, as disclosed in JP-A-57-87318, JP-A-7-32476, and the like, an uncured liquid material of an ionizing radiation-curable resin is applied to the surface of an embossing plate E, and Further, the liquid material is cured by irradiating ionizing radiation in a state where the base material 2 is superposed thereon, and the top material 1 is cured.
Alternatively, a method may be used in which after being bonded to the base substrate sheet 2, the mold is released from the embossing plate, and the top substrate sheet 1 is formed with irregularities on the plate.

The final finishing step of the method for manufacturing the embossed decorative material 20 according to the present invention is, as shown in the following, an embossed base sheet 1 composed of an embossed top base sheet 1 and a base base sheet 2. Furthermore, depending on the final use, the embossed decorative material 2 according to the present invention is finally obtained by a method such as bonding a backing material 7, for example, a honeycomb board or the like with an adhesive or the like when processing into a door.
0 is obtained. According to the above manufacturing process, the embossed decorative material 20 having the grain-shaped conduit groove-shaped recessed portion whose depth changes in n stages according to the respective longitudinal directions of the grain-shaped conduit groove can be manufactured.

[0013]

According to the present invention, a concave portion A having a wood grain conduit groove shape oriented in a specific direction is deepened in multiple stages in one longitudinal direction and a concave portion B is deepened in an opposite direction. By mixing, an embossed decorative material having a high design and high designability can be obtained depending on the type of grain.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a concave portion embossed into a groove of a wood grain conduit according to the present invention.

FIG. 2 is an explanatory view of a mixed state of two types of recesses A and B on the embossed decorative material surface according to the present invention.

FIG. 3 is a sectional view of an embossed decorative material according to the present invention in an embossed basic sheet state.

FIG. 4 is an explanatory view of a method for producing an embossed decorative material according to the present invention.

FIG. 5 is an enlarged schematic plan view of a conventional embossed decorative material having a depth change in a wood grain conduit groove.

[Explanation of symbols]

1 Top base sheet 2 Base base sheet 3 Wood grain printing ink layer 4 Wiping ink layer 5 Emboss plate base material 6-1、6-3 Resist layer 7 Backing material 8 Late material part 9 Early material part 10 Emboss basic sheet 20 Embossed decorative material according to the present invention 30 Conventional embossed decorative material having a depth change in the wood grain conduit groove A A concave portion that becomes deeper in one direction B A concave portion that becomes deeper in the opposite direction A1 --- An elongated oval pattern for forming concave portion A B1 --- Bn Long elliptical pattern for forming recess B. E Embossed plate S1 --- Sn contour line

Claims (2)

[Claims] 1. A decorative material having a plurality of elongated wood-grain conduit grooves formed on a surface of a base material oriented in a specific direction, wherein the recesses are sequentially formed in one of the longitudinal directions. An embossed decorative material comprising a mixture of a first concave portion that becomes deeper in multiple stages and a second concave portion that becomes deeper in multiple stages sequentially in the direction opposite to the longitudinal direction. 2. The embossed decorative material according to claim 1, wherein the concave portion is filled with a coloring ink.