JP2000094047A - Pressed article having pattern, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a pressed article having a pattern which is excellent in reproducibility and mass productivity. SOLUTION: A flat plate 10 is pressed to form a projecting part 12 to express the grain of wood, and paint is applied to a surface of the flat plate 10. When the paint is applied, the paint of even thickness is also applied to the surface of the projecting part 12 as illustrated in (c). An upper coat layer 18 is formed by applying the paint of even thickness on the surface of an under coat layer 14. After the under coat layer 14 and the upper coat layer 18 are formed, these are dried. After the under coat layer 14 and the upper coat layer 18 are dried, all projecting part 20 of the upper coat layer 18 and a top part of a projecting part 16 of the under coat layer 14 are polished as illustrated by a double-dotted chain line 22 in (e).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patterned press-formed product having a pattern formed on its surface and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, products having patterns such as wood grain and letters formed on the surface have been widely manufactured. As a technique for manufacturing such a patterned product, a technique of attaching a patterned film to the surface of a product having no pattern is known. According to this technique, a patterned product having excellent reproducibility can be manufactured by manufacturing a large number of films on which the same pattern is formed. However, when irregularities such as steps are formed on the surface of the product before the pattern is applied, it may be difficult to attach a patterned film on the surface of the product, which may result in lack of mass productivity.

As another technique for producing a patterned product, there is a technique for drawing a pattern on the surface of a product having no pattern. This technique is a technique in which a skilled person draws a pattern with a brush or a brush, and is inferior in reproducibility and mass productivity. Further, since skilled skills are required, the cost increases. Here, for example, a technique for forming a wood grain pattern on a building material will be described.

First, a base material for preventing rust is applied to a building material having no grain pattern. The base is dried and a surface color is overcoated on the base. After drying the top coat, a skilled person draws a wood grain pattern on the surface of the top coat with a brush or the like, and is dried.
For this reason, the work by a skilled worker includes three coats of a base coat, a top coat, and a pattern, and three coats (coatings) and three bake (drying) operations, each of which is required to be dried three times. Become. For this reason, the working time is prolonged and mass productivity is poor. In addition, since the pattern is manually drawn, the reproducibility is poor.

[0005]

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a patterned press-formed product excellent in reproducibility and mass productivity and a method for producing the same.

[0006]

According to the present invention, there is provided a press-molded article with a pattern according to the present invention, which comprises: (1) a material in which a convex portion for expressing a predetermined pattern is press-formed; An undercoat layer made of a paint applied to the surface. (3) An undercoat layer provided with an overcoat layer applied to the surface of the undercoat layer, in which a portion of the undercoat layer applied to the convex portion is exposed. It is.

Here, (4) the material is wood grain, letters,
Alternatively, the convex portion for representing the mark may be formed by press molding.

[0008] (5) The material may be formed by pressing only a part of the material with a convex portion for expressing the predetermined pattern.

Further, the method for producing a press-molded article with a pattern according to the present invention for achieving the above object is characterized in that: (6) a material is press-formed to form a projection for representing a predetermined pattern;
(7) A paint is applied to the surface of this material to form an undercoat layer of a predetermined thickness, (8) A paint is applied to the surface of the undercoat layer to form an overcoat layer of a predetermined thickness, and (9) the undercoat The method is characterized in that a portion of the layer coated on the convex portion is exposed.

[0010] (10) When press-forming the material, a convex portion for expressing a grain, a character, or a mark may be formed in the material by press-forming.

[0011] (11) When the material is press-formed, a convex portion for expressing the predetermined pattern may be formed only on a part of the material.

(12) In forming the overcoat layer, a paint having a specific gravity higher than that of the paint used as the undercoat layer may be used.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, one embodiment of the method for producing a patterned press-formed product of the present invention will be described.

FIG. 1 is a schematic view showing an example of a method for producing a patterned press-formed product, and FIG. 1 (a) is a perspective view showing a flat plate in which a projection for representing a grain is formed by press molding. (B) is an AA sectional view of (a), and (c)
Is a cross-sectional view showing a flat plate coated with an undercoat layer,
(D) is a cross-sectional view showing a flat plate coated with an overcoat layer, (e) is a cross-sectional view showing a surface of the undercoat layer and the overcoat layer to be polished and removed, and (f) is a cross-sectional view. It is sectional drawing which shows the flat plate in which the wood grain was formed.

Here, a method of manufacturing a patterned press-formed product 30 having a woodgrain pattern formed thereon will be described. In forming a woodgrain pattern on a flat plate (an example of the material according to the present invention) 10, first, as shown in (a) and (b), the flat plate 10 is press-formed to remove the woodgrain. A convex portion 12 for representing is formed. As the press molding method, the projection 1
A well-known press molding method is used using a mold having a convex portion corresponding to 2. Further, as the flat plate 10, a plate made of steel such as stainless steel, aluminum, or plastic is used.

Next, a paint is applied to the surface of the flat plate 10 on which the convex portions 12 are formed by press molding. When applying the paint, as shown in (c), a paint having a uniform thickness is also applied to the surface of the projection 12. As a result, the undercoat layer 14 having a uniform thickness (an example of the predetermined thickness according to the present invention) is formed on the surface of the flat plate 10. On the undercoat layer 14, convex portions 16 corresponding to the convex portions 12 are formed. This undercoat layer 14 is for representing a grain line, as described later. Therefore, the color of the paint of the undercoat layer 14 becomes the color of the grain line. The undercoat layer 14 is formed by well-known electrodeposition coating or spray coating using a spray gun.

Next, a paint having a uniform thickness is applied to the surface of the undercoat layer 14 to form an overcoat layer 18. When the paint is applied, the surface of the convex portion 16 is also applied with a paint having a uniform thickness as shown in FIG. Thereby, the undercoat layer 14 and the overcoat layer 18 are formed on the surface of the flat plate 10. This overcoat layer 18
Is formed with a protrusion 20 corresponding to the protrusion 12.
The color of the overcoat layer 18 is the color of the fabric. The overcoat layer 18 is formed by well-known electrodeposition coating or spray coating using a spray gun, similarly to the undercoat layer 14.
The overcoat layer 18 may be applied before the undercoat layer 14 dries, or the overcoat layer 18 may be applied after the undercoat layer 14 dries.
May be applied.

After forming the undercoat layer 14 and the overcoat layer 18 as described above, these are dried by natural drying (normal temperature) or baking (70 ° C. to 300 ° C.). Although any drying method may be used, a drying method suitable for the paint constituting the undercoat layer 14 and the overcoat layer 18 is used. After the undercoat layer 14 and the overcoat layer 18 are dried, as shown by the two-dot chain line 22 in (e), all of the protrusions 20 of the overcoat layer 18 and the undercoat layer 14 are removed.
And the top of the convex portion 16 are polished. The polishing method will be described later with reference to FIG.

In this manner, all of the projections 20 and the projections 16
By polishing the top portion of the undercoat layer 14, the portion of the undercoat layer 14 applied to the projections 12 is exposed on the surface of the overcoat layer 18 as shown in FIG. As a result, the grain pattern is represented by the undercoat layer 14 and the overcoat layer 18, and the undercoat layer 14
Represents the wood grain line, and the color of the paint becomes the color of the wood grain line.
In this way, a patterned press-formed product 30 having a woodgrain pattern formed thereon can be manufactured.

Referring to FIG. 2, undercoat layer 14 and overcoat layer 1
No. 8 will be described.

FIG. 2A is an enlarged sectional view showing a part of FIG. 1E, and FIG. 2B is a perspective view showing a polishing tool.

As shown in FIG. 2A, the portion 24 to be polished is made up of all the projections 20 of the overcoat layer 18 and the undercoat layer 1.
4 and the top of the projection 16. When the portion 24 to be polished is polished to remove the coating, a buffing tool 32 as shown in FIG. This buffing tool 32
Is composed of a disk-shaped member 36 which is rotated around a cylindrical shaft 34 by compressed air or electric power, and a very soft thread mass 38 attached to the outer peripheral surface of the disk-shaped member 36. While rotating the disc-shaped member 36, the thread lump 38
The portion 24 to be polished is shaved by being applied to the portion 24 to be polished. As a result, the undercoat layer 14 and the overcoat layer 18 represent a grain pattern.

As described above, in manufacturing the patterned press-formed product 30 on which the woodgrain pattern is formed, the flat plate 1 is used.
0 is press-formed to form a convex portion 12, an undercoat layer 14 and an overcoat layer 18 are sequentially formed on the surface of this material, and then the convex portion 16 of the undercoat layer 14 is exposed by buffing to form a patterned press. Since the molded product 30 is manufactured, a press molded product 30 with a pattern having excellent reproducibility and mass productivity can be obtained. In addition, by changing the color of the paint of the undercoat layer 14 and the color of the paint of the overcoat layer 18 in various ways, it is possible to manufacture a press-formed article 30 having a pattern colored in various colors.

Although the press-formed product 30 described with reference to FIGS. 1 and 2 has a two-dimensional shape, an example of a three-dimensional press-formed product will be described with reference to FIGS.

FIG. 3 is a perspective view showing a press-formed product having a substantially "U" -shaped cross section, and FIG. 4 is a perspective view showing a press-formed product having a concave portion formed in a central portion. FIG. 5 is a perspective view showing a press-formed product in which a projection is formed at a central portion.

The press-formed product 40 shown in FIG. 3 is formed by cutting a plate-shaped material into a predetermined size and, at the same time, press-forming the cross-section so as to have a substantially U-shape. At the time of this press molding, a convex portion 42 for representing a grain is formed. As the press forming method, a known press forming method is used.
Thereafter, in the same manner as described above, the undercoat layer 14 (see FIG. 1)
And an overcoat layer 18 are formed, and a press-formed product 40 is manufactured through drying and buffing.

In the press-formed product 50 shown in FIG. 4, the material is drawn by using a punch and a die. By this drawing, a convex portion 52 for representing a grain, a concave portion 54 at a central portion, and a flange 56 are formed. As the press forming method, a known press forming method is used. Thereafter, as described above, the undercoat layer 14 (see FIG. 1) and the overcoat layer 1 are formed.
8 is formed, and a press-formed product 50 is manufactured through drying and buffing.

The press-formed product 60 shown in FIG. 5 is formed by cutting a plate-shaped material into a predetermined size and, at the same time, press-forming the cross-section so as to have a substantially U-shape. At the time of this press molding, a convex portion 62 for representing a grain and a projection portion 64 at a central portion are formed. As the press forming method, a known press forming method is used. Thereafter, in the same manner as described above, the undercoat layer 14 (see FIG. 1) and the overcoat layer 18 are formed, and a press-formed product 60 is manufactured through drying and buffing.

As described above, the press-formed product of the present invention includes not only a two-dimensional flat product but also a three-dimensional product.

With reference to FIG. 6, a description will be given of a press-formed product having a wood grain pattern only partially.

FIG. 6 is a perspective view showing a press-formed product having a wood grain pattern only in a part thereof.

In manufacturing the press-formed product 70 having the wood pattern 72 only partially, a mold capable of forming a projection corresponding to the wood pattern 72 is used. Using this mold, press-forming a material with a convex part formed only in part,
Thereafter, the undercoat layer 14 (see FIG. 1) and the overcoat layer 18 are formed in the same manner as described above, and after drying and buffing,
A press-formed product 70 is manufactured.

With reference to FIG. 7, a description will be given of a press-formed product having a pattern such as characters and marks.

FIG. 7 shows a press-formed product having a pattern such as characters and marks. FIG. 7A is a plan view showing a press-formed product having a pattern formed of characters and marks.
(B) is a plan view showing a press-formed product on which a pattern consisting of characters is formed, and (c) is a plan view showing a press-formed product on which a pattern consisting of marks is formed.

As shown in (a), when manufacturing a press-formed product 80 in which a pattern consisting of the characters PRESS and rhombic marks surrounding the characters is formed, the convex portions corresponding to the characters and the marks are formed. Use a mold that can be formed. Using this mold, a material on which a pattern consisting of characters and marks is formed is press-formed, and then, as described above, an undercoat layer 14 (see FIG. 1) and an overcoat layer 18 are formed and dried. After that, the press-formed product 80 is manufactured.

Press-formed products 90 and 100 on which patterns composed of characters and marks are formed as shown in (b) and (c).
Is used in manufacturing a metal mold capable of forming a convex portion corresponding to the character or mark. Using this mold,
A material on which a pattern consisting of characters and marks is formed is press-formed, and then, as described above, an undercoat layer 14 (see FIG. 1) and an overcoat layer 18 are formed. Articles 90 and 100 are manufactured.

A technique for easily exposing the undercoat layer will be described with reference to FIG.

FIG. 8 is a schematic diagram showing a state in which a paint having a specific gravity higher than that of the paint used as the undercoat layer is used as the paint for the overcoat layer.

When manufacturing the press-formed product 110 with a pattern, an undercoat layer 114 is formed on the surface of the material 112 on which the convex portions 112a are formed, and an overcoat layer 116 is formed on the surface of the undercoat layer 114. In forming the overcoat layer 116, a paint having a specific gravity larger than that of the paint used as the undercoat layer 114 is used. Thereby, the convex portion 112a
Of the top coat applied on the top coat falls, and the top coat 11
6, the thickness of the portion 116a applied to the convex portion 112a is smaller than the thickness of the other portion 116b. As a result, the portion 114a of the undercoat
And the press-formed product 110 can be manufactured efficiently.

[0041]

As described above, in the patterned press-formed product of the present invention, the portion of the undercoat layer applied to the projections is exposed on the surface of the overcoat layer. For this reason,
A predetermined pattern is represented by the exposed portion and the overcoat layer. As described above, since the predetermined pattern is formed by the undercoat layer and the overcoat layer coated on the surface of the material in which the convex portions for expressing the pattern are press-formed, the patterned press having excellent reproducibility and mass productivity. A molded article is obtained. In addition, by changing the color of the paint of the undercoat layer and the color of the paint of the overcoat layer in various ways, it is possible to obtain a press-formed product with a pattern in which patterns colored in various colors are formed.

In the case where the material is formed by press-forming a convex portion for representing a grain, a character, or a mark, even if the grain, the character, or the mark has a complicated pattern, Since the convex portion for expressing a complicated pattern is formed by press molding, a patterned press-formed product excellent in reproducibility and mass productivity can be obtained.

In the case where the material is formed by press-forming only a portion of the material with a convex portion for representing a predetermined pattern, the convex portion is press-formed only on a portion of the material. A press-formed product with a pattern in which a pattern is formed only is obtained.

According to the method for producing a patterned press-formed product of the present invention, the material is press-formed to form a convex portion,
An undercoat layer and an overcoat layer are sequentially formed on the surface of this material,
Then, since a part of the undercoat layer is exposed to produce a patterned press molded product, a patterned press molded product excellent in reproducibility and mass productivity can be obtained. Also, by changing the color of the paint of the undercoat layer and the color of the paint of the overcoat layer in various ways, it is possible to produce a press-molded article with a pattern formed in various colors. Further, since the projection is formed by pressing the material, a three-dimensional molded product can be easily manufactured.

Here, when the material is press-formed, when a convex portion for representing a grain, a character, or a mark is formed on the material by press molding, the grain, character, mark, or the like has a complicated pattern. However, since the convex portions for representing these patterns are obtained by press molding,
A patterned press-formed product excellent in reproducibility and mass productivity can be manufactured.

In the case where the material is press-formed, if a convex portion for representing a predetermined pattern is formed only on a portion of the material, the convex portion is press-formed only on a portion of the material. It is possible to manufacture a press-formed product with a pattern in which a pattern is formed only. Furthermore, in forming the overcoat layer, when a paint having a specific gravity larger than the specific gravity of the paint used as the undercoat layer is used, when forming the overcoat layer, the specific gravity of the paint is heavy. Paint falls. For this reason, the thickness of the portion of the overcoat layer applied to the protrusions is smaller than the thickness of the other portions. As a result, the portion of the undercoat layer applied to the convex portion is easily exposed, so that a press-formed product can be manufactured efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of a method for producing a patterned press-formed product, and FIG. 1 (a) is a perspective view showing a flat plate formed by press-forming a convex portion for representing a grain, and FIG. )
FIG. 3A is a cross-sectional view taken along line AA of FIG. 3A, FIG. 4C is a cross-sectional view illustrating a flat plate coated with an undercoat layer, and FIG. 4D is a cross-sectional view illustrating a flat plate coated with an overcoat layer. FIG. 4E is a cross-sectional view illustrating a surface of the undercoat layer and the overcoat layer to be polished and removed, and FIG. 4F is a cross-sectional view illustrating a flat plate on which wood grain is formed.

2A is a cross-sectional view showing an enlarged part of FIG. 1E, and FIG. 2B is a perspective view showing a polishing tool.

FIG. 3 is a perspective view showing a press-formed product having a substantially “U” -shaped cross section.

FIG. 4 is a perspective view showing a press-formed product having a concave portion formed in a central portion.

FIG. 5 is a perspective view showing a press-formed product in which a projection is formed at a central portion.

FIG. 6 is a perspective view showing a press-formed product having a wood grain pattern only in a part thereof.

7A is a plan view showing a press-formed product having a pattern including characters and marks, and FIG. 7A is a plan view showing a press-formed product having a pattern formed of characters and marks. FIG. FIG. 4 is a plan view showing a press-formed product having a pattern formed thereon, and FIG. 4C is a plan view showing a press-formed product having a pattern formed of marks.

FIG. 8 is a schematic diagram showing a state in which a paint having a specific gravity greater than that of a paint used as an undercoat layer is used as a paint for an overcoat layer.

[Explanation of symbols]

10 flat plates 30, 40, 50, 60, 70, 80, 90, 100,
110 Press-formed product 12,112a Convex part 14 Undercoat layer 18 Overcoat layer

Continued on the front page F-term (reference) 4D075 AE03 BB02X BB06X CB21 DA07 DB01 DC02 EA05 4F100 AB03 AB10 AK01 AT00A BA03 BA07 BA10A BA10C BA43 CC01B CC01C DC14C DC30C DD04A DD04B DD08A DD08B EH46 EJ27 EJ30 EJ27 EJ27 HB40A JL02

Claims (7)

[Claims] 1. A material in which a convex portion for expressing a predetermined pattern is press-molded, an undercoat layer made of a paint applied to the surface of the material, and a portion of the undercoat layer coated on the convex portion Was exposed,
A press-formed product with a pattern, comprising: an overcoat layer applied to the surface of the undercoat layer. 2. The patterned press-formed product according to claim 1, wherein the material is formed by press-forming a convex portion for expressing a grain, a character, or a mark. 3. The press forming with a pattern according to claim 1, wherein the material is formed by press forming a convex portion for expressing the predetermined pattern only on a part of the material. Goods. 4. A material is press-molded to form a convex portion for representing a predetermined pattern, a paint is applied to the surface of the material to form an undercoat layer having a predetermined thickness, and a paint is applied to the surface of the undercoat layer. Forming an overcoat layer having a predetermined thickness by coating the undercoat layer, and exposing a portion of the undercoat layer applied to the projections. 5. The press forming with a pattern according to claim 4, wherein, when the raw material is press-formed, a convex portion for representing a grain, a character, or a mark is formed in the raw material by press forming. Product manufacturing method. 6. The press with a pattern according to claim 4, wherein, when the material is press-formed, a convex portion for representing the predetermined pattern is formed only on a part of the material. Manufacturing method of molded article. 7. A coating material having a specific gravity higher than a specific gravity of the coating material used as the undercoating layer in forming the overcoating layer.
3. The method for producing a press-formed product according to item 1.