JP2005211883A - Ornament and production method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ornament which has an anchor layer of high surface quality without occurrence of cobwebbing at the time of spray coating for forming the anchor layer, and to provide a production method therefor. <P>SOLUTION: The production method for the ornament comprises a step of forming the anchor layer 31 by spraying a spray coating material on a substrate 30 and a step of forming an ink receiving layer 33 on the anchor layer 31. In the spray coating material, 2 to 40 ratio of cyclohexanone and 10 ratio of ethyl acetate by weight ratio are compounded. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a decorative article and a method for manufacturing the same, and more particularly to a transmission illumination type automotive instrument display board used for vehicles such as automobiles and a method for manufacturing the same.

  In general, an instrument panel is disposed in a front portion of a vehicle compartment in an automobile, and a display board for an automobile instrument is provided on the instrument panel. A vehicle speed meter, an engine tachometer, and the like are arranged on the display board for automobile instruments, and scales, letters, and the like are printed on these vehicle speed meters.

The display panel for an automobile instrument is manufactured by spraying spray paint on a substrate such as polycarbonate to form an anchor layer, and forming an ink receiving layer and a printing layer on the anchor layer. (For example, refer to Patent Document 1).
JP-A-11-58930

  However, in the prior art, the anchor layer is formed by spray coating. However, as shown in FIG. 4, when the spray paint 101 is sprayed by the spray gun 102, a phenomenon called so-called stringing 103 occurs. This stringing 103 is generated when the binder in the spray paint 101 is solidified when a highly volatile solvent (for example, toluene) is blended in the spray paint 101, and is formed while the stringing 103 is generated. A fine irregular shape is formed on the surface of the anchor layer 104. Therefore, when a receiving layer and a printing layer are formed on this anchor layer 104, uneven | corrugated shape appears also on the surface of these receiving layers and a printing layer, and there exists a possibility that surface quality may fall.

  Therefore, an object of the present invention is to provide a decorative article having a high surface quality of the anchor layer and a method for producing the same without causing stringing in spray coating when forming the anchor layer.

  The method for manufacturing a decorative article according to claim 1 includes a step of forming an anchor layer on a substrate by spray coating with spray paint, and a step of forming an ink receiving layer on the anchor layer. The spray paint is blended at a weight ratio of 2 to 40 with a slow dry solvent with respect to the main agent 10.

  The method for manufacturing a decorative article according to claim 2 is the method for manufacturing a decorative article according to claim 1, further comprising a step of forming a printing layer on the ink receiving layer. Features.

  The method for producing a decorative article described in claim 3 is the method for producing a decorative article according to claim 1 or 2, wherein the slow-drying solvent is cyclohexanone.

  The method for producing a decorative article according to claim 4 is the method for producing a decorative article according to any one of claims 1 to 3, wherein the mixing ratio of the slow-drying solvent is set to the main agent 10. It is characterized by setting to 10-20.

  The ornament described in claim 5 is produced by the method for manufacturing an ornament according to any one of claims 1 to 4.

  The ornament described in claim 6 is the ornament described in claim 5, characterized in that it is a display panel for an instrument of an automobile.

  According to the method for producing a decorative article described in claim 1, since the spray paint is blended in a weight ratio and the slow-drying solvent is blended in a ratio of 2 to 40 with respect to the main agent 10, also in spray coating, The stringing phenomenon is eliminated, the surface of the anchor layer becomes smooth and the surface quality is improved. Therefore, the surface quality of the receiving layer formed on the anchor layer is also improved.

  Conventionally, since spray paint containing a highly volatile solvent such as toluene is sprayed, the binder in the spray paint is solidified and a stringing phenomenon may occur. However, in the present invention, since the slow-drying solvent having low volatility is blended in the range of 2 to 40 which is an appropriate blending ratio with respect to the main agent 10, the binder is difficult to solidify, and the surface after coating Quality is improved.

  According to the method for manufacturing a decorative article described in claim 2, since the method includes a step of forming a printing layer on the ink receiving layer, the surface of the printing layer is also smoothed to improve the surface quality. .

  According to the method for producing a decorative article described in claim 3, since the slow-drying solvent is cyclohexanone, the stringing phenomenon is further reduced, the surface of the anchor layer is smoothed, and the surface quality is improved.

  According to the method for manufacturing a decorative article described in claim 4, since the blending ratio of the slow-drying solvent is set to 10 to 20 with respect to the main agent 10, the stringing phenomenon is further reduced, and the anchor is fixed. The surface of the layer becomes smooth and the surface quality is improved.

  According to the ornament described in the fifth aspect, the same effects as in the first to fourth aspects can be obtained.

  According to the ornament described in the sixth aspect, it is possible to obtain a display panel for an automotive instrument having a good surface quality.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view of a display panel for an automotive instrument according to an embodiment of the present invention. On the display panel 10 for an automobile instrument, a fuel gauge 11 is displayed on the left end side, and a first warning section 12 is displayed below the fuel gauge 11. A vehicle speed meter 13 and an engine tachometer 14 are displayed on the center side, and a water temperature meter 15 and a second warning unit 16 are displayed on the right end side. A third warning unit 17 is displayed on the upper portion between the vehicle speed meter 13 and the engine tachometer 14.

  The automobile instrument display board 10 includes, for example, white letters, numbers, scales, symbols, and the like. For example, the speedometer 13 includes a character 18 “km / h”, a number 19 indicating a speed “180”, and a scale 20. Further, for example, in the third warning unit 17, a hazard lamp arrow symbol 21 is shown. In addition, what is called a base | substrate part without the display of these characters 18 and the scale 20 is formed in the black light-shielding part 22, for example.

  Here, the display board 10 can be roughly divided into three. That is, a desired display color is emitted when the backlight is not turned on, while a desired transmitted light color is emitted when the backlight is turned on. The first to third warning parts 12 that are equivalent to the color of the base part of the display panel (similar colors) and are not limited to day and night, but can be recognized by the transmitted light color when the backlight is lit, while characters and symbols can be recognized. , 16 and 17 and a light shielding portion 22 as a base portion on which characters 18 and the like are not displayed.

  FIG. 2 is an enlarged cross-sectional view of the automotive instrument panel, with the upper side being the front side and the lower side being the back side. A display panel substrate is disposed on the lowermost side, and an anchor layer 31 is formed on the display panel substrate. On the anchor layer 31, two printed layers 35, 35 are formed via an ink receiving layer.

  The display board substrate 30 is made of a substantially transparent synthetic resin such as polycarbonate (PC), polycarbonate ABS, ABS, or the like. The anchor layer (fixing layer) 31 formed on the surface side of the display board substrate 30 is formed to a thickness of about 2 μm, and the ink receiving layer 33 formed thereon is formed to a thickness of about 20 μm. Has been.

  The print layer 35 is obtained by coating a design print layer over two layers. The print layer 35 can be formed by, for example, an ink jet printing method.

  According to this ink jet printing method, the ink receiving layer 33 can be formed by spraying small droplets of black ink on the surface of the ink receiving layer 33 and allowing it to penetrate. The light-shielding portion 22 on which the printing layer 35 is formed has a sufficient ink absorbability by the ink receiving layer 33, and the color developability is also kept good without the ink bleeding. Accordingly, since the boundary between the light transmitting portion and the light shielding portion 22 that becomes the character 18 and the scale 20 is clearly formed, the clarity of the character 18 and the scale 20 is ensured.

  Next, a method for manufacturing a display panel for an automotive instrument according to the present embodiment will be briefly described.

  First, after the surface of the display board substrate 30 is cleaned with a cleaning liquid such as ethanol, as shown in FIG. The anchor layer 31 is formed so as to have a film thickness, for example, 2 to 5 μm. For example, an operator (not shown) holds the spray gun 41 and sprays the spray paint 40 while translating the spray gun 41 along the surface of the substrate 30 to perform spray coating. Here, since the spray coating 40 contains a proper amount of cyclohexanone as a slow-drying solvent, the coating can be performed in a state where the binder is hard to solidify and there is no stringing.

  Next, after the surface of the anchor layer 31 is subjected to plasma irradiation or the like to improve surface wettability, the ink receiving layer 33 is applied with a coater or the like so that the film thickness becomes a predetermined thickness, for example, about 20 μm. Then, the printing layer 35 is printed on the ink receiving layer 33 by using an inkjet printing method or the like.

  Below, the spray coating and spray coating at the time of forming the said anchor layer 31 are demonstrated.

  The spray paint 40 includes a main agent such as ethyl acetate, a curing agent, and a solvent such as cyclohexanone, and the blending ratio thereof is set to 10: 1: (2 to 40) by weight. 10: 1: (10-20) is more desirable. The solvent is a solvent having lower volatility than toluene or the like, and as described above, cyclohexanone is most desirable.

  The spray coating may be performed by an operator holding the spray gun 41 or by attaching the spray gun 41 to a robot hand. As the spray gun 41, for example, those having specifications of model: Mesak G-05A, caliber: φ0.8 mm, atomization pressure: 0.15 mPa, and pattern pressure: 0.18 mPa can be suitably used. As the pump, for example, a pump of type: gear pump and discharge amount: 60 cc / min can be suitably used. Furthermore, in the case of the robot painting, the movement stroke of the spray gun 41: 50 mm, the movement speed: 0.4 m / sec, the distance between the spray gun 41 and the substrate 30: 150 mm, the number of coating times: one time, and the drying time: 100 A condition of ° C. × 30 sec can be applied. The spray gun 41 is desirably one that can be atomized as much as possible, and an electrostatic coating gun is particularly preferable. However, the specifications of the spray gun 41 and the pump are only examples, and other specifications can be suitably employed.

  According to the present embodiment, stringing is eliminated in spray coating when the anchor layer 31 is formed, coating can be performed without unevenness, and the thickness of the anchor layer 31 can be made uniform. Further, the ink receiving layer 33 on the anchor layer 31 can also be formed without unevenness. Furthermore, even when the printing layer 35 is formed by ink jet printing, the color unevenness of the printing layer 35 is eliminated and the appearance quality is improved. For this reason, the color and brightness of the transmitted illumination that is transmitted through the display panel 10 are also stabilized.

  In the embodiment, as shown in FIGS. 2 and 3, the anchor layer 31 and the ink receiving layer 33 are formed only on the surface side of the substrate 30, but the present invention is not limited to this, and the surface of the substrate 30. The anchor layer 31 and the like can be formed on both the side and the back side.

It is the front view which looked at the display board for motor vehicle instruments by this embodiment from the surface side. It is sectional drawing of the display board for motor vehicle instruments by this embodiment. It is a side view which shows the state which has formed the anchor layer by spray coating on the board | substrate for display boards by this embodiment. It is a side view which shows the formation method of the anchor layer by a prior art.

Explanation of symbols

10 Automotive instrument display (decoration)
30 Display Board Substrate 31 Anchor Layer 33 Ink Receptive Layer 35 Print Layer 40 Spray Paint

Claims (6)

  A step of spray-coating spray paint (40) on the substrate (30) to form an anchor layer (31), and an ink receiving layer (33) on the anchor layer (31) are formed. A step of blending the spray paint (40) in a weight ratio with a slow-drying solvent in a ratio of 2 to 40 with respect to the main agent 10.   The method of manufacturing a decorative article according to claim 1, further comprising the step of forming a printing layer (35) on the ink receiving layer (33).   The method for producing a decorative article according to claim 1 or 2, wherein the slow-drying solvent is cyclohexanone.   The method for producing a decorative article according to any one of claims 1 to 3, wherein the blending ratio of the slow-drying solvent is set to 10 to 20 with respect to the main agent 10.   A decorative article produced by the manufacturing method according to any one of claims 1 to 4. 6. The ornament according to claim 5, wherein the ornament is a display panel (10) for an automobile instrument.

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