JP2000199082A - Production of aluminum thin sheet excaving display formed part and excaving formed part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a formed part of high quality free from bends and burrs in the periphery of the formed part without using a die and a press forming machine. SOLUTION: As for the method for producing an excaving display formed part, a planar stock M obtd. by pasting the back side of an aluminum thin sheet 1 which surface has been applied with an oxidized film 1a with a supporting sheet 2 is prepd., on the upper face, a picture with an optional shape is partially masking-printed by masking ink, thereafter, the part of an exposed face which has not been applied with masking is excaved to reach the surface of the supporting sheet 2 pasted on the back side by etching treatment and to produce an aluminum excaving formed sheet 1' in which display parts 6 composed of an aluminum sheet part 1B surrounded by excaved holes 5 are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an engraved display molded product of an aluminum sheet and an engraved molded product.

[0002]

2. Description of the Related Art Conventionally, a thin aluminum plate whose surface has been subjected to anodizing treatment is used as a material, and a desired character, pattern,
In order to manufacture a display molded product in which a display portion of an arbitrary shape such as a pattern or a picture is defined, a metal mold corresponding to the predetermined shape is manufactured, and the aluminum thin plate is formed by a mechanical press machine using the metal mold. It was stamped and molded.

[0003]

However, such a punching display molding method has the following disadvantages. That is, it is necessary to prepare and prepare a mold required for press molding. Requires expensive mechanical press machines.
When the aluminum thin plate is press-formed by using these dies and a mechanical press machine, a slight curvature (R surface) is generated on the inner surface of the outer periphery of the press-formed product due to the strain caused by the stress of the press die. At the same time, so-called burrs are generated on the outer peripheral edge on the back side of the molded product by press cutting the aluminum thin plate. This phenomenon occurs because
Because it is due to the clearance of the male and female molds of the mold,
As long as a molded product is manufactured by punching and molding with a mechanical press machine using a mold, the above disadvantages cannot be avoided. Therefore, without using such a press molding method, the above-mentioned disadvantages were solved, that is, a display molded product that uses a thin aluminum plate as a material and defines a display portion of a desired shape from which distortion and burrs do not occur. Development of a manufacturing method is desired.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional disadvantages and provides a method for producing an engraved aluminum thin plate which satisfies the above-mentioned needs. Attaching a support sheet to the back surface of the coated aluminum sheet to produce a laminated sheet material,
(B) partial masking printing with a masking ink on the anodized film surface on the upper surface of the aluminum thin plate;
An image of any shape defined by the masking part itself and / or
And defining an image of any shape consisting of an unmasked exposed portion surrounded by a masking portion, (c)
Then, the exposed portion is cut out by etching until the exposed portion reaches the surface of the support sheet, and (d) the masking portion is then removed, whereby the aluminum thin plate portion has a predetermined shape formed of an aluminum plate portion. And / or molded into an engraved formed plate having a display portion of a predetermined shape composed of an engraved hole. Further, the present invention provides, after the step (c) in the above production method,
Anodizing treatment is performed to form an anodic oxide film on the etching cut surface of the aluminum sheet surrounding the engraved hole, and then the masking portion is removed. In the present invention described above, the support sheet may be a transparent or opaque and room temperature compression-bonding type, or the synthetic resin film may be transparent or opaque and a heat compression type. Further, the present invention is characterized in that the support sheet is peeled off after the production method described above. Further, according to the present invention, after a transparent support sheet is attached to the surface of the engraved display molded plate of the engraved display molded product obtained by the above-described production method, the support sheet on the back surface of the display molded product is peeled off. It is characterized in that it is removed, and then a two-sided pressure-sensitive adhesive sheet is attached. Further, in the present invention, in the above-mentioned production method, the support sheet is a transparent synthetic resin film, and a position corresponding to a display portion comprising an engraved hole formed by engraving the engraved molding plate on the back surface. In addition, a translucent colorless or colored adhesive piece is attached. Furthermore, the present invention
In the masking printing step (b) of the manufacturing method described above, the masking image portion surrounded by the exposed portion and the surrounding masking portion are printed on an aluminum margin plate portion electrically connected to a power supply outside the masking image portion. After printing at least one thin-line masking bridge connecting the masking image portion and the surrounding masking portion across the exposed portion, and after performing the etching process of (c), the engraved hole is formed. It is characterized in that anodizing treatment is performed on the etching end face of the surrounding aluminum thin plate, and then the masking image portion and the surrounding masking portion are removed. Further, the present invention provides the above production method,
(A) adhering a support sheet to the back surface of an aluminum sheet having an anodized film on its surface to produce a laminated sheet material; (b) forming a primary sheet on the anodized film surface on the upper surface of the aluminum sheet. The primary masking part is partially printed with the masking ink, and the solvent is different from the primary masking ink along the periphery of the primary masking part on the exposed part adjacent to the primary masking part. Printing a secondary masking part having a desired outer contour shape and a small width with the secondary masking ink to be formed into the aluminum mask, and (c) then exposing the exposed part adjacent to the secondary masking part to the thickness of the aluminum plate. (D) removing the secondary masking portion; and (e) removing the secondary masking portion. Engraving the exposed portion of the trace to the middle of the thickness of the aluminum thin plate, and engraving the etched concave surface formed previously to the support sheet surface, and performing a second etching process, (f) then performing the primary masking It is characterized in that the part is removed. Further, in the masking printing step (b) of the above-mentioned manufacturing method, the primary masking ink is used to position the first primary masking image part inside the outer part surrounded by the exposed part and the outer part outside the exposed part. And printing the surrounding masking portion on the aluminum margin plate portion electrically connected to the anode for anodizing treatment, and simultaneously connecting the primary masking image portion and the surrounding masking portion across the exposed portion. At least one thin-line masking bridge is printed, and the solvent is different from the primary masking ink on the exposed portion adjacent to the primary masking image portion along the periphery of the primary masking image portion. Printing a secondary masking image portion having a desired outer contour shape and a small width with the secondary masking ink to be made;
(C) performing a first etching process in which an exposed portion between the second masking image portion and the surrounding masking portion is carved to halfway in the thickness of the aluminum plate to form an etching concave surface; (d) (E) removing the secondary masking image portion; (e) then engraving the exposed portion of the removed mark of the secondary masking image portion halfway through the thickness of the aluminum thin plate; Engraving the etched concave surface formed on the support sheet surface and performing a second etching process for forming an engraved hole, (f) then performing anodizing on the formed two-stage etched cross section, (g) Next, the primary masking image portion and the surrounding masking portion are removed. Further, in the masking step (b) of the above-mentioned production method, the primary masking ink may be located inside the primary masking image portion surrounded by the exposed portion and outside the exposed portion by the primary masking ink; Printing a surrounding masking portion provided on an aluminum margin plate portion to be electrically connected to an anode for anodizing treatment, and further printing the primary masking image portion on an exposed portion adjacent to the primary masking image portion; Along with the periphery of the primary masking ink, a secondary masking ink having a different solvent from the primary masking ink is used to print a secondary masking image portion having a desired outer contour shape and a small width, and at the same time, traverse the exposed portion and Printing at least one thin-line masking bridge connecting the secondary masking image portion and the surrounding masking portion; (c) then printing the secondary masking image portion and the surrounding Subjecting the exposed portion between the masking portion to a part of the thickness of the aluminum plate to perform a first etching process for forming an etched concave surface, and (d) subsequently, the second masking image portion and the masking bridge (E) Then, the exposed portion of the secondary masking image portion and the removed mark of the masking bridge is carved to a middle of the thickness of the aluminum sheet, and the etched concave surface formed earlier is removed. Engraved to the surface of the support sheet, and subjected to a second etching process for forming an engraved hole, (f) then anodizing the formed two-stage etched cross section, (g) The primary masking image portion and the surrounding masking portion are removed.

Further, the present invention provides the following display part molded products. In other words, an engraved display molding having a display portion composed of a hole engraved according to an image of an arbitrary shape and / or a display portion composed of an aluminum plate portion surrounded by the engraved hole on an aluminum thin plate coated with an anodized film. An engraved display molded product comprising a plate and a transparent or opaque support sheet adhered to the back surface of the engraved display molded plate. Also, an engraved display molded product comprising individual display portions peeled from the support sheet of the above engraved molded product. In addition, an engraved display molded product in which a support sheet is attached to the surface of the above-described engraved molded product, and a backing sheet pressure bonding material is attached to the back surface of the molded product. In addition, the color of the colorless or colored anodic oxide film applied to the etched end face of the periphery of the display portion of an arbitrary shape of the engraved molded plate is the same as or different from the color of the anodic oxide film on the surface of the engraved molded plate. Display moldings that are color. In addition, the contour of the lower etched end surface of the two-stage etched cross-section formed in the engraved display molded product by the above manufacturing method is the same as or different from the contour shape of the upper etched end surface. In addition, the color of the anodized film applied to the two-step etched section formed on the molded product by the above-described manufacturing method is the same as or different from the color of the anodized film on the surface of the engraved molded plate. Molding.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 5
Fig. 1 shows an embodiment of the method for producing a cutout molded product by etching a thin aluminum plate of the present invention. 1 and 2
FIG. 1 and FIG.
Is prepared and prepared. That is, the laminated sheet material M is subjected to a colored or non-colored anodizing treatment on the entire peripheral surface to form an anodized film 1a, and a sealing treatment is applied to the anodized film 1a. It comprises a rectangular aluminum thin plate 1 having a small area of 0 mm and a transparent or opaque support sheet 2 adhered to the entire back surface thereof. In the present invention, the term "transparent" is used to include "translucent" which has translucency. The support sheet 2 is preferably a strong transparent or opaque synthetic resin sheet having chemical resistance such as an etching solution or an anodizing solution. As the synthetic resin sheet, generally, various synthetic resin films such as polyvinyl chloride, polyester, polyolefin such as polyethylene and polypropylene, and polyamide can be selectively used. In the example shown in the figure, the aluminum sheet 1 is pre-coated (not shown) with a room-temperature adhesive having a thickness of 50 to 100 μm and a pressure-sensitive adhesive applied on one entire surface thereof (not shown). The laminated sheet material M is formed by pressing and attaching a vinyl-based synthetic resin film 2. The formation of the anodic oxide film on the aluminum thin plate is performed, for example, by using sulfuric acid H ₂ SO ₄
In an electrolytic solution of an aqueous solution of 10 to 15% by weight of an aluminum plate as an anode, a current density of 1 A / dm ² , a bath voltage of 15 V to 20 V, and a liquid temperature of 20 ° C. ± 2 ° C., an anodizing treatment for applying a DC current to the anode plate. An anodic oxide layer having a thickness of 6 to 15 microns can be formed on the entire surface of the aluminum plate. This colorless oxide film is optionally colored with a vivid primary color organic dye or various metal salts. The sealing treatment of the anodized film is achieved by, for example, treating with a mixed solution of nickel acetate and cobalt acetate at 95 to 100 ° C. for 20 to 50 minutes.

According to the present invention, a desired masking printing such as screen printing is performed by using a masking ink of a desired color on the anodic oxide film surface 1a on the upper surface of the aluminum thin plate 1 of the laminated sheet material M thus configured. Thereby, an image of an arbitrary shape such as a character, a pattern, a figure, and a picture is partially defined. In the illustrated example, as shown in FIG. 3, ABC characters are arranged at regular intervals (aluminum blank plate portion 1B) on the main plate surface region of the aluminum thin plate 1, that is, on the aluminum plate portion 1A in the central surface region. Masking printing 3,3,3
There is an exposed portion 4 which is not masked and printed on the outer periphery of the masking portion 3 of each character, and the aluminum margin plate portion 1 surrounding the outer periphery of the ABC masking portions 3, 3, 3 is provided.
A surrounding masking print 3 'was defined on B in a frame shape. The masking ink is selected from those having a desired material and color. For example, a resist ink mainly composed of a UV-curable acrylic resin colored green or another desired color with an inorganic solvent or an organic solvent, a resist blue A mainly composed of a cellulose resin, 540 brown, etc. A cyclized rubber-based ink or the like is used.

Next, the laminated sheet material M shown in FIG. 3 which has been subjected to the masking printing as described above is etched with an etching solution. As an etching solution, NaOH100
g / liter caustic soda aqueous solution
Using an etching solution heated to 0 to 80 ° C. or a normal temperature iron chloride aqueous solution prepared by adjusting FeCl ₃ to Baume 38 to 42 ° C. with hydrochloric acid or the like, immersing or spraying the exposed portions 4, 4, 4 is etched by a chemical reaction with the etching solution, and as shown in FIG. 4, the engraving is performed until the surface of the support sheet 2 adhered to the back surface of the aluminum thin plate 1 is reached. 5 and 5 are formed. Specifically, a laminated sheet material M having a thickness of 0.2 mm to 1 mm is added to the above-described aqueous caustic soda solution in accordance with the thickness thereof.
By immersing for 0 minutes to 2 hours, the engraved hole 5 can be formed. Thus, the image masking portions 3, 3, 3 of A, B, C composed of aluminum plate portions are engraved around the periphery of each character by the cutout holes 5, 5, 5, and the aluminum plate portions protruding from the support sheet 2 surface. The engraved and formed plate 1 'engraved and formed on the protruding display portions 6, 6, and 6 formed of the portions. The aluminum thin plate 1 is formed by engraving the engraved display molding plate 1 in which each display portion 6 composed of each aluminum plate portion 1A and the aluminum margin plate portion 1B on the outer periphery thereof are separated from the engraved hole 5 by the etching process. However, since the engraved and formed plate 1 ′ is still adhered and supported by the support sheet 2 on the back surface, the respective display portions 6 do not separate from the support sheet 2. Since it is held at the initial sticking position, stable and good handling such as etching and transport can be performed.

After the completion of the etching process, all the masking portions 3, 3 'are removed by dipping or spraying with a solvent that dissolves the masking ink. In this way, as shown in FIG. 5, a laminated sheet-type engraved display molded product P1 comprising the engraved display molded plate 1 'and the support sheet 2 of a synthetic resin film adhered to the back surface is obtained. That is, each of A, B,
Display part 6, 6, 6 consisting of aluminum plate part of letter C
Is separated and isolated from the aluminum margin plate portion 1B on the outer periphery thereof by the engraved hole 5 on the outer periphery thereof, but is adhered to the synthetic resin film 2 on the back surface thereof. A predetermined engraved display molded product P1 is obtained while maintaining the same shape and position as the masking images 3, 3, 3 printed at the intervals of. This engraved molded product P1 can be used as a product as it is, and can be attached to a desired object and used as a display panel.

Further, according to the present invention, each of the display portions 6, 6, and 6 is separated from the engraved display molded product P1 of the laminated sheet type thus obtained, and each of the display portions 6, 6, and 6 is separated from each aluminum. Engraved display moldings P2, P consisting of plate parts
2, P2 may be a product. For this purpose, the end of the synthetic resin film 2 of the laminated sheet-type display molded product P1 is pinched and peeled off from the engraved display molded plate 1 'to form the display portion 6 composed of the characters A, B and C. , 6,6
Are sequentially dropped from the synthetic resin film 2, so that the display portions 6, 6, 6 formed of the respective aluminum plate portions 1A are formed.
As shown in FIG. 6, individual engraved and displayed molded products P2, P
2, P2.

As is apparent from the above, according to the method of engraving an aluminum thin plate by etching of the present invention, the generation of an R-plane due to the distortion caused by the press stress on the outer periphery of the display molded product seen in the conventional stamping press molding method. And no burr is generated on the back surface of the molded product, and a good molded product can be obtained. Further, it is economical without the need for manufacturing and using a mold and a mechanical press machine, and a molded product can be easily and inexpensively manufactured. That is, in the etching molding method of the present invention, instead of a conventional press die, a product such as a brand mark and a name plate can be produced from graphic design through screen printing plate making, masking printing, and an etching process. Starting with a significant reduction, the cost of making graphic designs and screen plates can be made very inexpensively compared to the cost of making molds.
In addition, it is relatively easy to screen-print a graphic design image of a complicated shape or a large area, for example, about 1,000 mm x 2,000 mm, which is impossible with a press die. It is also possible, and there is an advantage that it can efficiently cope with various kinds of small-quantity production to mass production.

Further, according to the present invention, the engraved display used as a so-called "paste mark" which is adhered and displayed on the surface of various industrial products and buildings from the molded article P1 shown in FIG. Molded articles can also be manufactured. That is, a room-temperature press-fit type in which an adhesive having an adhesive property at room temperature is previously applied to the surface of the engraved formed plate 1 'of the engraved display molded product P1 of the laminated sheet type shown in FIG. As shown in FIG. 7, a transparent support sheet 7, for example, a transparent synthetic resin film 7 having a thickness of 50 to 100 microns is stuck at room temperature, and then the support sheet 2 stuck on the back side is indicated by a virtual line. Peel as follows. Thus, the engraved and formed plate 1 'is now supported by the transparent synthetic resin film 7 adhered to its surface. In other words, the engraved and formed plate 1 'supported by the support sheet 2 on the back surface, that is, the display units 6, 6, and 6 formed of the A, B, and C aluminum plates engraved on the plate. The aluminum blank portions between the inner and outer peripheral portions of the display portions 6, 6, and 6 are supported by the support sheet 7 on the front surface without changing the initial position, and the engraved and formed plate 1 '. Is obtained in a state where the back surface is exposed to the outside. Next, a double-sided pressure-bonding material 8b (that is, a normal-temperature pressure-bonding material layer 8b2 on both sides of the core material 8b1) attached to one surface of the mount 8a.
8b2) is formed into an aluminum plate portion 1A, 1A,
Compression bonding with interleaving paper provided with a double-sided compression bonding material 8b formed by stamping and forming a molded body of characters A, B, and C according to the same shape of A, B, and C as the display portions 6, 6, and 6 composed of 1A. Material 8
As shown in FIG. 8, on the back of the engraved display molding plate 1 ', the above-mentioned A, B,
The double-sided press-bonded material 8b of the stamped character C is pressed and adhered to produce a stamped and formed display molded product P3 for a pasting mark. The interleaving paper 8a of the interleaf crimping material 8 is cut into a rectangular shape by using a desired cutter to match the outer shape of the rectangular plate 1 'with the rectangular engraving display. In general, it is prepared before sticking to the back surface of the molded plate 1 '. The core material 8b1 of the double-sided pressure-bonded material 8b is selected from woven fabric, nonwoven fabric, Japanese paper, and the like, and the adhesive layers 8b2 and 8b2 on both surfaces are made of various adhesives such as vinyl, butyl rubber, silicone, and polyester. Choose from and use.

The engraved display molded product P3 is used as a sticking mark as follows. That is, the interleaf 8a of the interleaf-bonding material 8 attached to the back surface is peeled off, and as shown in FIG. 9, a desired object B such as various industrial products or buildings is formed.
After pressing against a predetermined position of the transparent surface support sheet 7 attached to the surface of the molded product P3, pressing with a fingertip or a palm (palm) from the outside, the aluminum of A, B, C A display unit 6 composed of plate portions 1A, 1A, 1A
6 and 6 are securely adhered to the object B via the pressure-sensitive adhesive material 8 with a slip sheet on the back side while maintaining the initial fixed arrangement state. Next, after the attachment is completed, the surface support sheet 7 is peeled off to complete the attaching operation. Note that, in the illustrated example, the aluminum margin plate portion 1B between the display portions 6 and 6 without the interleaf crimping material 8 and the frame-shaped aluminum margin plate portion 1B on the outer periphery of the display portions 6, 6 and 6 are shown. Since there is no double-sided pressure-bonding material on the back surface, the case where the support sheet 7 on the front surface is removed together with the peeling is shown. However, including the aluminum blank plate portion 1B, it is adhered to the object B as the engraved and formed plate 1 '. If it is desired to display the image, it is sufficient that the back surface thereof is bonded in advance with a crimping material 8 having a double-sided crimping material layer stamped and formed in the same manner as the engraved formed plate 1 '. In this attaching operation, the synthetic resin film 7 attached to the surface
Is transparent, the display portions A, B, and C on its back surface can be seen through, so that it can be accurately attached to a predetermined attachment position on the object B. Thus, the object B
Since the display portions 6, 6, and 6 of A, B, and C can be pasted and displayed on the object B while maintaining the initial predetermined interval, the use as a "paste name" or "paste mark" is not possible. Be satisfied.
As described above, the molded product for a pasting mark manufactured by the manufacturing method of the present invention is used for a desired pasting mark such as a logo type by arranging a combination of brands, nameplates or characters, figures, etc. in which various characters are arranged. Suitable for manufacturing.

When it is not necessary to peel off the backing synthetic resin film 2 as a product of the molded article P1 shown in FIG. 5 of the present invention, the supporting sheet cannot be easily peeled off by hand at room temperature. A thermocompression-bonded transparent or opaque support sheet may be used. As the thermocompression-bonding type synthetic resin film, for example, a polyester-based film whose one surface is coated with a hot melt adhesive or the like is used.

FIG. 10 to FIG. 13 show a method of manufacturing an engraved display molded product of a thin aluminum plate by etching according to another embodiment of the present invention. In this embodiment, a method for manufacturing a carved display molded product in which a carved hole itself is formed into a concave display portion having an arbitrary shape such as a character or a figure. As a laminated sheet material, a thermocompression-type support sheet 2 ', for example, a thermocompression-type support sheet, is provided as a support sheet on the back surface of an aluminum thin plate 1 in which the surface of an aluminum plate material is formed on a colored or uncolored sealed anodic oxide film 1a. A laminated sheet in which both members 1, 2 'formed by thermocompression-bonding a polyester synthetic resin film 2' at a temperature of 100 to 150 ° C via a thermocompression-bonding adhesive applied to its back surface are firmly adhered to each other. A material M 'is prepared and prepared. As shown in FIGS. 10 and 11, a predetermined color image is formed on the upper surface of the laminated sheet material M 'using a masking ink of a predetermined color, for example, an image composed of characters A, B, and C is outlined. Images 9, 9,
In order to display 9 at predetermined intervals, it is surrounded by a masking print 3 to define a central area thereof. In other words,
A, B, C in the white images 9, 9, 9 consisting of the exposed portions 4, 4, 4 where the anodic oxide film 1a surface without masking is exposed
The masking printing 3 was performed on the upper surface of the aluminum thin plate 1 so that the characters Next, the respective exposed portions 4, 4, 4 are immersed or sprayed with an etching solution in the laminated sheet material M 'in the same manner as in the previous embodiment until the surface of the synthetic resin film 2' on the back surface appears. Etching to carve out the entire thickness. Thus, A, B, C comprising the engraved holes 5, 5, 5 themselves as shown in FIG.
The display portions 6 ', 6', 6 'are molded. Next, the masking 3 is removed with a solvent that dissolves the masking ink. Thus, an engraved display molded product P4 composed of the engraved display molded plate 1 'shown in FIG. 13 and the support sheet 2' firmly adhered to the back surface is obtained. This can be used as it is as a display panel. For example, a desired adhesive is applied to the back surface, and is adhered to an appropriate place for use. Printing on the back surface of the display portions 6 ', 6', 6 'with ink of opaque or transparent and white or other desired color, or sticking a sticky piece of opaque or transparent and white or other desired color Thus, a desired color can be given to the display section. In particular, as shown in the figure, when the support sheet 2 'is a transparent support sheet 2', an illumination light source such as an incandescent lamp or a fluorescent lamp is provided on the back side, and the engraving holes 5, 5, 5 are provided by the illumination. The characters A, B, and C can be used as a display panel that can be displayed brightly on the back surface. In this case, the display portions 6 ', 6', 6 'are formed by the engraved holes 5, 5, 5.
The product may be formed by applying a light-transmissive printing surface with a colorless or colored ink on the back surface corresponding to the above, or attaching a sticking piece such as a colorless or colored light-transmitting synthetic resin film.
The engraved display molded product P of the present invention of the illumination display type, in which the display section emerges brightly by being projected by such illumination, and is visually observed.
Manufacture of No. 4 brings novel functions as a display board of various electric appliances, office equipment, advertising billboards and the like, and an instrument panel of an automobile, a railway car, a ship, an aircraft, and the like.
In addition, when the opaque white or colored support sheet is used instead of the transparent support sheet as the support sheet 2 ′, the display portion 6 ′,
6 'and 6' can improve the visual display effect by their colors, and may be products which are not necessarily used as illumination display.

FIGS. 14 and 15 show an engraved display of an instrument panel for an automobile as a modification of the engraved display molded product P4 of the present invention in which the engraved hole 5 suitable for lighting display is a display portion 6 '. A molded product P4 'is shown. The etching molding method is the same as that of the molded article P4. More specifically, the engraved display molded plate 1 'of the display molded product P4'
In order from left to right, thermometer O, tachometer T,
Various components such as arc-shaped scales, English characters, pictograms, and Arabic numerals, which are components for displaying the display units of the speedometer S and the fuel gauge N, are appropriately combined, and all the components of these displays are displayed. Engraved and formed by the display portions 6 ', 6', 6 ',...
Further, transparent windows TW and SW for displaying numerical values of the tachometer and the speedometer, and windows GW, GW,... Each of the display portions 6 ', 6', 6 ',... Formed by engraving holes 5, 5,..., Is formed by engraving, and a narrow frame F surrounding these instrument display portions is also engraved.
It is formed by engraving with a display portion 6 'made of.
In addition, the shaft hole G of the pointer shaft insertion portion at the center of each arc-shaped scale was also formed by engraving with the engraving hole 5. Further, after manufacturing a display molded product P4 including the engraved display molded plate 1 'and a transparent thermocompression-bonded polyester-based synthetic resin film 2' firmly adhered to the back surface by thermocompression bonding, When the display portions 6 ', 6',... Are observed from the front surface by printing the substantially entire surface in the engraved enclosing frame F on the back surface of the synthetic resin film 2 'with white and semi-transparent ink. A white translucent printing ink surface 10 is formed so as to appear as a white display portion, and a red and translucent printing ink surface 11 is formed at a predetermined position on the back surface of the printing ink surface 10 by the water temperature. Part of the scale of the meter and part of the scale of the tachometer are applied so as to overlap each other, and a part of each scale is displayed in red.
Further, a green and translucent printing ink surface 12 is applied so as to overlap the left and right direction instruction arrows, and the direction instruction is displayed in green. Further, the black and green and translucent characters PRN are displayed.
Except for D321, a printing ink surface 13 displaying a black, opaquely colored, elongated rectangular synthetic resin print character is applied so that each character overlaps the respective gear position display window, and further, each numerical display is performed. A colorless and transparent printing ink surface 14 is applied to the windows TN and SN to form a display molded product as an instrument panel for an automobile. Preferably, the entire surface of the display panel of the molded product P4 'is subjected to a surface treatment for enhancing a metallic feeling by spin processing, wire head line processing, or the like. It has the effect of emphasizing a natural atmosphere. Incidentally, instead of applying the above-mentioned respective translucent colorless or colored printing ink surfaces to the back surface of the translucent support sheet 2 ', respective colorless or colored translucent sticking pieces are attached. You may do it.

The above various display molded articles P1, P of the present invention
2, P3, P4, and P4 'are, in the manufacturing method, a peripheral edge 1b of the aluminum plate portion surrounding the engraved hole 5 formed by etching the aluminum thin plate 1, in other words, a thickness of the plate. Since the etched end face 1b along the pulling-out direction is in a state where the aluminum material is exposed, at least the etched end face 1b at the periphery of the display portion 6 or 6 'is anodized and colored or uncolored. It is preferable to produce an engraved display molded product provided with an anodic oxide film of (1) and having corrosion resistance.

For this purpose, there is a need for a manufacturing method that allows anodizing treatment of the engraved display molded product after the etching process. One example of the manufacturing method will be described with reference to FIGS. That is, when the masking portion 3 is printed in the masking printing step (b) in the method of manufacturing the engraved display molded product P1 including the display portions A, B, and C made of the aluminum plate portion of the present invention. At the same time, on the upper surface of the oxide film 1a of the aluminum thin plate 1, the respective exposed portions 4 surrounding the respective masking images 3, 3, 3, A, B, and C, which are not coated with the masking ink, are shown in FIG.
As shown in the figure, a masking image portion 3 on the aluminum plate portion 1A on which the image 3 is displayed and an anode of an external anodizing power supply surrounding the outside of the exposed portion 4 surrounding the outer periphery (not shown) ), At least one, preferably a plurality of thin line-shaped masking bridges 3 "for connecting with the surrounding masking portion 3 on the aluminum margin plate portion 1B to be connected are printed. The thickness may be about 0.5 to 1.5 mm. After the masking step is completed, the etching step (c) for engraving the entire thickness of the aluminum plate is performed. As a result, as shown in FIG. 17, each of the thin line-shaped masking bridges 3 ″, 3 ″,
In the traces where 3 ″,... Were removed, the respective engraved holes 5, 5
Aluminum thin wire 1 connecting each of the convex display portions 6, 6, 6 made of aluminum plate portions 1A of A, B, and C to an aluminum margin plate portion 1B surrounding the outer periphery thereof.
The engraved display molding plate 1 'having 5, 15,... Is obtained. Generally, the width of the aluminum thin wire 15 is set according to the thickness of the aluminum thin plate. For example, when the thickness of the aluminum thin plate is 0.2 mm to 1 mm, the width of the thin masking line is printed in advance in the range of 0.5 to 1.5 mm in consideration of the narrow width due to the side etching effect during the etching process. After the etching step, after removing the fine line-shaped masking bridge 3 ", a bridge conductor 15 having a width of 0.2 to 1.0 mm is obtained. In this manner, the engraved display provided with the bridge conductors 15, 15,. Molded plate 1 '
Etched stump face 1b surrounding each engraved hole 5
Are exposed surfaces of the aluminum material by the above-mentioned etching treatment. Therefore, in order to form a colorless or colored anodic oxide film on the etching cut surface 1b of each of the engraved holes 5, the engraved display molding plate 1 'is anodized. That is, in the anodizing treatment, if the blank plate portion 1B of the engraved display molding plate 1 'is connected to an anode connected to an external power supply and energized, the current from the power supply will be applied to the outer blank plate portion. 1B, the display portions 6, 6, and 6 of A, B, and C formed by the respective aluminum plate portions 1A, 1A, and 1A on the inner side thereof are energized through the respective bridge conductors 15, 15, and 15, respectively. Each carved hole 5
Is formed on the stump face 1b of the aluminum thin plate 1 surrounding the display, that is, the peripheral edge 1b of each display portion 6, 6, 6 and the peripheral edge 1b of the outer margin plate portion 1B surrounding each display portion 6. Thus, a corrosion-resistant engraved and displayed molded product P1 'shown in FIG. 18 is obtained. As an example of specific conditions for the anodic oxidation treatment in this case, a 15% sulfuric acid aqueous solution is used as an electrolytic bath, and the engraved molded product P1 is immersed in the electrolytic bath. With the current density of 1 A / dm ² , bath voltage of 15 V to 20 V,
Energize at a liquid temperature of 20 ° C. ± 2 ° C. for about 40 minutes. This allows
An oxide film 1a 'having a thickness of 10 microns or more is formed.
In this case, a colored or uncolored anodic oxidation treatment is performed, and the color of the oxide film 1a 'can be colored to a desired color, and the color of the oxide film 1a on the surface of each display section 6 can be the same as or different from the color of the oxide film 1a. Various engraved display moldings P that can be colored, are appropriately selected according to the application of the product, and have different design aesthetics
1 'can be manufactured. For example, when the color of the anodic oxide film on the surface of the display section 6 of the engraved display molded plate 1 'of the engraved display molded product P1 is a non-colored aluminum color, the anodized end surface 1b has a gold anodized surface. In order to form the film 1a ', it is obtained by immersing it in a ferric oxalate aqueous solution at 40 ° C. for about 1 minute.

In this case, since each bridge conductor 15 is extremely thin, when the synthetic resin film 2 on the back surface of the above-mentioned engraved display molding plate 1 'is peeled off or when producing a pasting mark, the synthetic wire adhered to the front surface thereof. When the resin film is peeled off and transferred, it is easily broken and removed, and the trace is obtained as a substantially invisible engraved display molded product P1 '. However, if necessary, it may be positively cut off by a molding die. . Although not shown, the engraved and displayed molded product P1 'of the aluminum sheet having improved corrosion resistance obtained in this manner is also shown in FIG. It goes without saying that the engraved display molded product for a pasting mark shown in FIG.

FIGS. 19 and 20 show the engraved holes 5, 5,
In the case of manufacturing an engraved display molded product provided with corrosion resistance to the molded product P4 shown in FIG. 13 in which the concave display portions 6 ', 6', 6 'of A, B, C are engraved and formed by itself. An example will be described. That is, as shown in FIG. 19, in the masking printing step of the manufacturing method, the masking images 3 of A, B, C composed of the exposed portions 4, 4, 4 defined on the upper surface of the laminated sheet material M '. Among the portions 3, 3, the surrounding masking portion 3 'on the aluminum plate portion 1A outside the exposed portions 4, 4 constituting the characters A and B and the surrounding masking portion 3 inside the aluminum plate portion 1A are separated and isolated. Aluminum plate 1A, 1
A thin line-shaped masking bridge 3 "connecting the masking portion 3 on A is printed. Then, an etching step is performed in the same manner as described above. A bridge conductor 15 that connects the inner and outer aluminum plate portions across the hole 5 remains. Therefore, the engraved display molded plate 1 'is then connected to an anode for anodizing treatment connected to an external power supply through the aluminum blank plate portion 1B and anodized, as shown in FIG. Then, a corrosion-resistant molded product P4 ″ in which the anodic oxide film 1a ′ is applied to the etching cut surface 1b surrounding each of the engraved holes 5 is obtained.
The masking portion 3 and the surrounding masking portion 3 'may be removed after the etching process. However, it is preferable to remove the masking portion 3 and the surrounding masking portion 3' after performing the anodic oxidation process after the etching process because the working efficiency is improved. After the production of the molded product P4 ″,
The bridge conductor 15 may be cut and removed by a cutter or a Thomson type. 14 and 15, the bridge conductor 15 'for connecting the aluminum plate portion 1A inside the cutout hole 5 of the surrounding frame F and the margin plate portion 1B outside the cutout display molded product P4' of the same type. May be formed in advance, so that an anodized film may be formed by performing anodizing treatment on the etched end face 1b of the aluminum 1A surrounding the engraving hole 5 for each display inside the enclosing frame F. Needless to say.

Further, the present invention relates to a method for manufacturing a carved display molded product, wherein the etched cut end face 1b of the carved hole is formed into two steps of upper and lower steps. Provide the law. The two-stage etched cross section increases the visual three-dimensional appearance of the engraved molded plate, and softens the feel of the etched cross section. That is, even if a hand touches the etched cut end surface of the periphery of the display portion of the engraved formed plate, the hit is soft and the effect of preventing damage is brought about. FIG. 21 and FIG. 22 show an engraved and displayed molded product P5 of one example of the embodiment. That is,
In the manufacture of the engraved display molded product P1 shown in FIG. 5, the A, B, C convex display portions 6, 6 composed of aluminum plate portions surrounded by the engraved holes 5 of the engraved molded plate 1 '. , 6 at the middle of the thickness of the aluminum plate, a horizontal etching section 1b3, an inner upper etching section 1b1 in the thickness direction, and a lower etching section at the thickness direction outside the section. The engraved display molded product P5 formed on the step-like two-step etched cross section 1b 'including the end face 1b2 is shown. The two-stage etched section 1b 'is provided with an anodic oxide film 1a'.

Next, a method 1 of manufacturing the engraved display molded product P5 in which the cut end face 1b of the engraved hole 5 shown in FIGS. 21 and 22 (a) is formed in the above-described two-step etched section 1b 'is shown. An example will be described with reference to FIGS. As shown in FIGS. 23 and 24, a green UV-curable acrylic based on a primary masking ink, for example, a glycol-based solvent, is dissolved on the surface of the anodic oxide film of the aluminum sheet 1 of the laminated sheet material M. A, B, C character images 3 in the central area with masking ink mainly composed of resin
A surrounding masking portion 3 'is printed on the aluminum margin plate portion 1B with the exposed portions 4, 4 and 4 surrounding the outer periphery of the portions 3, 3 and is cured by UV irradiation. Next, the primary masking ink is dissolved in an organic solvent that dissolves in a different kind of secondary masking ink, and the primary ink is dissolved in a methylene chloride-based solvent. Masking image part 3,3,3
A second masking image portion 16 which is adjacent to the periphery of each contour and has the same or different outer contour shape as the outer contour shape and masks a part of the small-width exposed portions 4, 4, 4 , 16, 16 are printed and solidified by natural drying or preferably by hot air drying at about 50 to 80 ° C.
In order to form the secondary masking image portion 16, usually,
As clearly shown in FIGS. 29 and 30, each of the characters A, B, and C of the primary masking image portions 3, 3, and 3 is formed by the secondary masking ink different in color from the primary masking ink. A wider character A, B, C is superimposed and printed on the primary masking image portions 3, 3, 3 so that the extra end of the character extends beyond the periphery of each primary masking image portion 3 and The secondary masking image portion 16 is printed by masking a part of the exposed surface 4 having a suitable small width along. Next, a primary etching process is performed, and as shown in FIG. 25, the exposed portion 4 surrounding the secondary masking image portions 16, 16, 16 composed of characters A, B, C is In the illustrated example, the etching concave surface 5a is formed so as to be engraved to half of the thickness in the illustrated example. Next, each of the secondary masking image portions 16 was removed by immersion or spraying in an organic solvent, and after exposing the aluminum anodic oxide film surface on the lower surface thereof, a second etching treatment was performed. As described above, the etched concave surface 5a is cut out to the synthetic resin film 2 surface adhered to the back surface thereof to form the cutout hole 5, while
The exposed portion from which each of the secondary masking image portions 16 has been removed is carved to half the thickness of the plate, and the carved hole 5 is formed.
Then, an L-shaped etched section is formed. Thus, as shown in FIG. 26, the periphery of each of the letters A, B, and C composed of the aluminum plate portion surrounded by the engraving hole 5 is located at the middle position of the thickness of the aluminum plate at the horizontal etched section 1b3 and the inside thereof. As a result, an engraved plate 1 'having a two-stage etched section 1b' formed of an upper-stage etched end surface 1b1 in the thickness direction and a lower-stage etched end surface 1b2 in the thickness direction is obtained outside the cut end surface 1b1.

The two-step etched cross section 1 formed on the engraved and formed plate 1 'shown in FIG.
Since b 'has an exposed aluminum material, it is preferable to form an anodic oxide film thereon. for that purpose,
As shown in FIGS. 23 and 24, in the above-mentioned masking step, primary masking image portions 3, 3, 3 of A, B, C are printed on the aluminum sheet 1 of the laminated sheet material M in the above-mentioned masking step. At the same time, a thin line-shaped masking bridge 3 ″ connecting the respective primary masking image portions 3, 3, 3 and the surrounding masking portion 3 outside the exposed portions 4, 4, 4 at the same time. , 3 ″ to the exposed part 4,
Print across 4 and 4. Next, after printing the secondary masking image portion 16 in the same manner as above,
By the step-etching process, on the lower surface of the thin line-shaped masking bridges 3 ", 3",... The bridge conductor 15 connecting the outer aluminum plate is formed. Thus, the engraved and formed plate 1 'is then connected to the anode in the same manner as in the previous embodiment, and the two-step etched section 1b' is anodized to obtain each of the plates as shown in FIGS. 21 and 22. In the two-step etching section 1b 'of the display section 6, that is, the horizontal etching section 1b3 and the upper etching section 1b
1 and an anodic oxide film 1
a 'can be formed. Furthermore, in this case, it goes without saying that the anodic oxide film 1a 'is also formed on the etched section 1b of the aluminum margin plate 1B surrounding the outer periphery of the engraved hole 5 surrounding each display section 6 at the same time. Next, the primary masking image section 3 and the surrounding masking section 3 'are removed. In this way, a corrosion-resistant, engraved and displayed molded product P5 is obtained. The masking removal may be performed before the anodic oxidation treatment, but is preferably performed after the anodic oxidation treatment because it improves the production efficiency.
If desired, the color of the anodic oxide film 1a 'applied to the two-step etched section 1b' may be the same as or different from the non-colored or colored color of the surface of the aluminum thin plate 1. Thereby, the design effect of the display unit 6 can be increased, and various products with improved commercial value can be obtained.

The peripheral contour of the upper etching cut surface 1b1 formed by the two-stage etching section 1b 'can be linear or non-linear such as corrugated. Also, the peripheral contour shape of the upper etching cut surface 1b1 and the peripheral contour shape of the lower etching cut surface 1b2 projecting outward from the upper contour need not necessarily be formed in the same contour shape as shown in FIG. If desired, the shapes may be different from each other. FIG. 27 shows an example of the manufacturing method,
In the masking printing process of the aluminum sheet 1 of the laminated sheet material M, as shown in FIG. 27A, the peripheral contour shape 3a of the masking portion 3 of the print image of the character A with the primary masking ink is flattened. Formed in a straight line,
When the contour 16a of the image 16 of the secondary masking portion to be printed on the peripheral edge is formed in a waveform, the two-stage etching process described above causes the two-stage etching of the display unit 6 as shown in FIG. The outer contour of the upper etching cut surface 1b1 of the etching cross section 1b 'is formed in a flat linear shape, and the outer contour shape of the lower etching cut surface 1b2 projecting outward can be formed in a waveform. In addition, it is possible to obtain an engraved display molded product P5 'having a design change in appearance. Although not shown, it is not necessary to continuously project along the entire periphery of the upper etching cut surface 1b1 projecting outward from the upper etching end cross section 1b1, but it is formed to project discontinuously partially. As a result, the design can be changed.

In the case of manufacturing the engraved display molded product subjected to the two-stage etching process, as shown in FIG. 28, the bridge conductor 15 for anodizing treatment is provided at a depth from the surface of the engraved display molded plate 1 '. It is preferable to produce the engraved display molded product P5 'which is retracted in the direction and provided at a position where the external appearance is inconspicuous. An example of such a two-stage etching method will be described below. 29 to 32 show the steps of manufacturing the engraved display molded product P5 'shown in FIG. 28 by the two-stage etching. First, as shown in FIG. 29, the surface of the anodic oxide film 1a of the aluminum thin plate 1 of the laminated sheet material M is coated with the primary masking ink as shown in FIG.
26, the primary masking image portion 3 of characters A, B, and C and the surrounding masking portion 3 'on the outer periphery are printed with the exposed portions 4, 4, and 4 on the outer periphery. And is cured by UV irradiation. Next, as shown in FIG. 30, the secondary masking ink is adjacent to and along the respective peripheral edges of the primary masking image portions 3, 3, 3 as shown in FIG. The secondary masking image portions 16, 16, 16 which have an outer contour shape and mask a part of the small-width exposed surfaces 4, 4, 4 are printed and solidified by natural drying or preferably by hot air drying. In this case, the thicker A, A than the first image portions 3, 3, 3 are obtained by the second masking ink in the same manner as in the previous embodiment.
The images A, B, and C of B and C are combined with the primary masking image portion 3
The second masking image portion 16 is formed such that the second masking image portion 16 overlaps the upper surface of the first masking image portion 3 and masks a part of the exposed surface 4 beyond the peripheral edge of the first masking image portion 3 with a small width. . In this case, according to this embodiment, FIG.
9 and FIG. 30, when the secondary masking image portion 16 is printed, the secondary masking portions 16, 16, 16 and the Surrounding masking portion 3 'on outer aluminum margin plate
Then, a thin line-shaped masking bridge 3 ″ is printed. Next, primary etching is performed, and as shown in FIG. 31, secondary masking surrounding the primary masking image portions 3, 3, 3 respectively. An etching concave surface 5a is formed so that the exposed portion 4 between the image portion 16 and the surrounding masking portion 3 'is carved into the middle of the thickness of the aluminum thin plate 1 to half of the thickness of the aluminum thin plate 1 in the illustrated example. After removing the secondary masking image portion 18 and the thin line-shaped masking bridge 3 ″ by immersing or spraying in an organic solvent, and exposing the anodic oxide film surface of the aluminum sheet on the lower surface thereof, A second etching process is performed, and as shown in FIG. 32, the etched concave surface 5a is cut out to the surface of the synthetic resin film 2 adhered to its back surface to form a cutout hole 5. On the other hand, the exposed portion of the trace from which the secondary masking image portion 16 has been removed is carved down to half the thickness of the plate to form an L-shaped etched cross-section connected to the carved hole 5, and The thin line-shaped exposed portion of the trace from which the thin line-shaped masking bridge 3 ″ has been removed is carved to half the thickness of the plate, and the display portion 6 consisting of the aluminum plate portion inside the cutout hole 5 and the aluminum outside the portion are formed. By performing the second etching to form the bridge conductor 15 whose height connecting to the plate portion is reduced to half of the thickness of the plate, the engraved display molding plate 1 ′ having the two-step etched section 1 b ′ is formed. Then, without removing the primary masking image portions 3, 3,... And the surrounding masking portion 3 'on the upper surface of the engraved display molding plate 1' shown in FIG. Engraving By removing the primary masking portion 3 and the surrounding masking portion 3 inside 5, the anodic oxide film 1 a is formed on the two-step etching cross section, that is, the upper etching cut end face 1 b 1, the horizontal etching cross section 1 b 3 and the lower etching cross section 1 b 2. '.
At this time, the etching streak face 1 outside each engraving hole 5
The anodic oxide film 1b is also formed on b. Thus FIG.
A highly corrosion-resistant engraved display molded product P5 ″ shown in FIG.

The two types of two-stage etching and the anodic oxidation are described in FIGS. 11 to 13 and FIG.
It is needless to say that the present invention can be applied in the process of manufacturing an engraved display molded product of the type in which the engraved hole 5 itself shown in FIG.

In all of the above embodiments, the features of the present invention are described in a manner that is easy to understand.
Thin aluminum sheet 1 and support sheet 2 or 2 '
The method of manufacturing the engraved molded product of the aluminum sheet of the present invention using the laminated sheet material M or M 'of the present invention has been described. Of course, mass production of the engraved molded product of the present invention can be performed efficiently and at low cost. In this case, a large-sized aluminum thin plate 1 is used, and a large-sized support sheet is adhered to the back surface of the aluminum thin plate 1 to prepare a laminated sheet material. Thus, for example, using the large-sized laminated sheet material M, a plurality of images of a desired shape are vertically and horizontally arranged and mask-printed on the anodic oxide film surface of the aluminum thin plate. Therefore, it is of course practically preferable to mass-produce engraved products in which a large number of engraved molded products are arranged vertically and horizontally at a time. Of course, even if a desired large-sized laminated sheet material is used, an engraved display molded product is produced by combining the desired characters, figures, patterns, patterns, etc. into one integrated work. You may.

FIGS. 33 and 36 show one embodiment of a manufacturing method for mass-producing a large number of engraved display moldings having the same display mode at once. First, as shown in FIGS. 33 and 34, a laminated sheet material M is prepared by removably attaching a large-sized support sheet 2 to the entire surface of a large-sized aluminum thin plate 1. At the same time, a surrounding masking portion 3 'is printed on the aluminum margin plate portion 1B so as to surround the left and right rectangular exposed surfaces 4 and 4 of a large area on which no masking ink is applied on the upper surface of the anodic oxide film 1a. Square exposed surface portions 4 and 4 of each large area
An image 3 in which image parts 3A, 3A, 3A composed of characters A, B, and C and an image part 3B composed of an enclosing frame surrounding the image parts 3A, 3A, 3A are vertically arranged at predetermined intervals in the vertical direction. To 3
, And a total of six sets of images 3, 3,... Arranged in two rows are masked and printed. More preferably, in order to enable the anodizing process, the character masking image portions 3A, 3A, 3A including the characters A, B, and C of each masking image 3 are connected to the surrounding frame masking image portion 3B. Thin-line masking bridge 3 ″, each adjacent masking image 3,
3 and a masking image 3, 3 ′ on the left and right margin plates 1 B surrounding the outer periphery of the masking images 3, 3, 3 arranged on the left and right, respectively, Are printed in a desired number of masking bridges 3 ″. Next, this laminated sheet material M is subjected to an etching treatment of the unmasked exposed portions 4, 4,... In the exposed surface portions 4, 4 in the large left and right areas, as shown in FIG. The thickness of the aluminum thin plate is completely engraved, and engraved holes 5, 5,... Reaching the surface of the transparent synthetic resin film 2 attached to the back surface are formed. Next, the engraved and formed plate 1 'thus obtained is subjected to anodizing treatment. Next, all the masking image portions 3A and 3B are removed. Thus, the anodic oxide films 1a ', 1 are formed on the etched end surfaces 1b, 1b, ... surrounding the respective engraved holes 5, 5, ....
a ′,... are formed. That is, as shown in FIG. 35 and FIG. 36, the engraved and formed plate 1 ′ is composed of a combination of the character display plate 6 A and the surrounding frame display plate 6 B inside the aluminum margin plate 1 B, and Six display portions 6 each made of a corrosion-resistant aluminum plate having an anodized film 1b formed on each of the etching stumps are aligned vertically and horizontally on a large-size peelable synthetic resin sheet 2. Are obtained.

In the production of the engraved display molded product manufactured in the above-mentioned embodiment, it is general and preferable that the colorless or colored anodic oxidation treatment is performed and then the anodized film is sealed. The sealing process is performed by, for example, nickel acetate 5
This is carried out by immersing in a g / l aqueous solution at 95 ° C. for 25 minutes or more.

In the above embodiment, the engraved display molded product consisting of only the convex display portion composed of the aluminum plate portion surrounded by the engraved hole by the etching molding method of the aluminum sheet of the laminated sheet material. And the case of manufacturing an engraved display molded product consisting only of a concave display portion composed of an engraved hole is shown.However, an engraved display molded product in which a convex display portion and a concave display portion composed of an engraved hole itself are mixed is described. It goes without saying that it may be manufactured. Also,
It goes without saying that in the manufacture of all the above-mentioned engraved display molded articles of the present invention, the masked portion is entirely removed, then washed and dried.

[0031]

As described above, according to the present invention, a laminated sheet material is prepared by attaching a support sheet to the back surface of an aluminum sheet having an anodized film on the surface, and a masking ink is applied to the surface of the aluminum sheet. After printing to define a desired image by the printed masking portion itself or the unmasked exposed surface portion surrounded by the masking portion, the exposed surface portion not masked by the etching process is reduced in thickness. By penetrating and carving out the surface of the support sheet on the back surface of the plate, bending of the peripheral edge of the display molded product caused when mechanically punching out the display molded product using a male and female mold as in the past. There is no generation of burrs and burrs, and a high quality display molded product of a predetermined shape can be obtained smoothly. Further, a desired engraved display molded product can be easily and inexpensively obtained by using masking printing or graphic design.

In this case, when using a support sheet which is releasably adhered to the aluminum sheet, the support sheet is peeled off and the aluminum sheet section formed by engraving a large number of pieces on the aluminum sheet is used. The resulting molded parts are obtained individually.

Further, in order to manufacture a display molded product for a pasting mark from the above-described engraved molded plate, a transparent support sheet is releasably adhered to the surface of the engraved molded plate, and the back surface of the transparent support sheet is supported. The sheet was peeled off, and then, on the back surface, a pressure-bonded material with a slip sheet having a double-sided pressure-bonded material punched and formed in the same shape as the engraved display molded product on one side of the mount was punched and formed on the engraved display molded plate. By attaching each double-sided pressure-bonded material to the corresponding display portion of the corresponding aluminum molded plate, a display molded product for a pasted mark can be obtained.

When a thermocompression bonding type is used for the aluminum thin plate as the support sheet, a laminated sheet type display molded product which is firmly and integrally bonded to the engraved display molded plate can be manufactured. Then, it can be fixed to a target object at a desired place via a fixture such as an adhesive and used as various display boards.

In this case, when the engraved display molded plate is manufactured as an engraved display molded plate having an engraved hole itself as a display portion, and a transparent support sheet is used as a support sheet to be adhered to the back surface. In this way, an engraved display molded product suitable for lighting display is obtained, and upon use, if it is illuminated from the back side with a lighting fixture such as an incandescent lamp or a fluorescent lamp,
When viewed from the surface, the display portion consisting of the engraved hole itself can be raised brightly from the engraved display molding plate by the light emitting effect to enhance the visual effect, and can be used for automobiles, electric equipment, office equipment It can be used as an illumination display panel for various applications such as. In this case, when applying a printing ink surface or a sticking piece having a desired color such as opaque or transparent red, blue, or white on the back surface of the transparent support sheet corresponding to the engraved hole of the engraved display molding plate. Provides an engraved display molded product with improved visual and design effects as a display panel for instruments and advertising guides.

Further, according to the present invention, the inner masking portion surrounded by the exposed surface portion of the aluminum thin plate and the masking plate portion connected to the outside of the masking portion and connected to the anode of the power supply for anodizing treatment outside. When a thin line-shaped masking bridge is printed on the exposed surface portion and an etching process is performed, a bridge for electrically connecting an inner masking plate portion and an outer masking plate portion to a lower surface of the thin line-shaped masking bridge. Since the conducting wire is formed, the resulting engraved plate can be subjected to anodic oxidation treatment, and a colorless or colored anodic oxide film can be formed on the etched end faces on both sides of the engraved hole. It is possible to produce a stamped molded product having a corrosion resistance as a whole.

Further according to the present invention, an aluminum sheet is partially printed with a primary masking ink so that an image of a desired shape is exposed on the primary masking portion itself or surrounding the primary masking portion. A second masking portion having a small width adjacent to and along the periphery of the primary masking portion was printed with a secondary masking ink having a different solvent from the primary masking ink. rear,
The exposed portion adjacent to the periphery of the secondary masking portion is first etched to form an etched concave surface in the middle of the thickness of the aluminum sheet, and then the secondary masking portion is removed. By engraving the etched concave surface to the support sheet surface and engraving the removal trace to the middle of the thickness of the aluminum thin plate, the etched end face of the engraved hole can be formed into a two-step etched cross section,
An engraved display molded product which is formed on the engraved display molded plate and which has a soft touch to the periphery of the display portion made of an aluminum plate, does not damage the hand, and at the same time has an improved design effect can be obtained.

In the masking printing step of the above-described manufacturing method, the primary masking ink is used to position the inner primary masking image portion surrounded by the exposed portion and the outer portion of the exposed portion, and A primary surrounding masking portion is printed on an aluminum marginal plate portion electrically connected to the anode, and at least one connecting the primary masking image portion and the surrounding masking portion across the exposed portion. A thin line-shaped masking bridge is printed on the exposed portion adjacent to the primary masking image portion, and a second solvent having a different solvent from the primary masking ink along the periphery of the primary masking image portion. Printing a secondary masking image portion having a desired outer contour and a small width with the secondary masking ink, and then exposing the secondary masking image portion between the secondary masking image portion and the surrounding masking portion. Part is carved to the middle of the thickness of the aluminum plate to perform a first etching process to form an etched concave surface, then removes the secondary masking image portion, and then removes the secondary masking image portion While engraving the exposed portion of the trace to the middle of the thickness of the aluminum thin plate, engraving the etching concave surface formed earlier to the support sheet surface, performing a second etching process to form an engraved hole, The formed two-step etched section was subjected to anodic oxidation treatment, and then the primary masking image area and the surrounding masking section were removed, so that an anodic oxidation film was formed on the two-step etched section. A molded product with a sculpted character can be obtained.

Further, in the masking step of the above-described manufacturing method, the primary masking ink is used to position the inside of the primary masking image area surrounded by the exposed portion and the outside of the exposed portion, and And a surrounding masking portion provided on an aluminum margin plate portion to be electrically connected to the anode, and further printed on an exposed portion adjacent to the primary masking image portion along the periphery of the primary masking image portion. A secondary masking ink having a desired outer contour and a small width is printed with a secondary masking ink having a different solvent from the primary masking ink, and the secondary masking ink is printed across the exposed portion. Printing at least one thin line-shaped masking bridge connecting the masking image portion and the surrounding masking portion, and then printing between the secondary masking image portion and the surrounding masking portion; The exposed portion is subjected to a first etching process of forming an etching concave surface by carving the exposed portion down to the middle of the thickness of the aluminum plate, then removing the second masking image portion and the masking bridge, and then removing the second masking image portion. The next masking image portion and the exposed portion of the trace where the masking bridge has been removed are carved to the middle of the thickness of the aluminum thin plate, and the etching concave surface formed earlier is carved to the support sheet surface to form a carved hole. A second etching process was performed, and then the formed two-stage etched cross section was subjected to an anodic oxidation process, and then the primary masking image portion and the surrounding masking portion were removed. Bridge wires connecting the enclosed isolated inner aluminum plate and the outer aluminum margin plate are located inside the engraved hole. Because it is formed in a state of low height Tsu position, and appearance, good corrosion resistance the bridge conductor is a format that obscured carved vent display molded article is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a laminated sheet material used in an example of a method for producing a display molded product of a thin aluminum plate according to the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a front view of a mask sheet-printed laminated sheet material.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a front view of a laminated sheet type engraved display molded product.

FIG. 6 is a perspective view of an individual engraved display molded product manufactured in another embodiment of the present invention.

7 shows a step of attaching a support sheet to a surface of the engraved display molded article of the present invention shown in FIG. 5 in a production method according to still another embodiment of the present invention using the molded article of the present invention as a starting material.
FIG. 4 is the same sectional view as the IV line.

FIG. 8 is a cut-away sectional view of a stamping-mark engraved display molded product obtained by sticking a bonding material with an interleaf paper to the back surface after the support sheet is peeled off.

9 is a cross-sectional view showing a use state of the engraved and marked display molded product for a pasting mark shown in FIG. 8;

FIG. 10 is a front view of a laminated sheet material in a masking printed state according to still another embodiment of the method of manufacturing the engraved display molded product according to the present invention.

FIG. 11 is a sectional view taken along line XI-XI of FIG. 10;

FIG. 12 is a cross-sectional view after an etching process.

FIG. 13 is a front view of the engraved display molded product from which a masking portion has been removed.

FIG. 14 is a front view of an engraved display-formed product manufactured as an automotive instrument panel suitable for lighting display manufactured by the manufacturing method of the present invention.

FIG. 15 is a rear view of the engraved molded product shown in FIG. 14;

FIG. 16 is a front view of a mask-printed laminated sheet material according to another embodiment of the method for producing an engraved display molded product of the present invention that enables anodization.

FIG. 17 is a front view of an engraved display molded product manufactured by etching the laminated sheet material shown in FIG. 16;

FIG. 18 is a sectional view taken along line XVIII-XVIII in FIG. 17;

FIG. 19 is a front view of a masking-printed laminated sheet material according to still another embodiment of the method for producing an engraved display molded product of the present invention that enables anodization.

20 is an engraved display molded product manufactured by etching the laminated sheet material shown in FIG. 19;
XX-ray cutting diagram.

FIG. 21 is a front view of an engraved display molded product manufactured by a two-stage etching process in still another embodiment of the manufacturing method of the present invention.

FIG. 22 is a sectional view taken along line XXII-XXII of FIG. 21;

FIG. 23 is a front view of a masking-printed laminated sheet material in the method of manufacturing the engraved display molded article shown in FIG. 21.

24 is a sectional view taken along line XXIV-XXIV of FIG. 23.

FIG. 25 is the same cross-sectional view as FIG. 24 after the first etching process.

FIG. 26 is the same cross-sectional view as FIG. 24 after the secondary etching process has been performed;

FIG. 27 shows a modified example of the method for producing an engraved display molded product by the two-stage etching process of the present invention, and FIG.
(A) is a front view of a part of the masked laminated sheet material, and (b) of FIG. 27 is a front view of a part of the manufactured engraved display molding.

FIG. 28 is a sectional view of an engraved display molded product manufactured by another two-stage etching method of the present invention.

FIG. 29 is a front view of a masking-printed laminated sheet material in the method for producing the engraved display molded article shown in FIG. 28.

FIG. 30 is a sectional view taken along the line XXX-XXX in FIG. 29;

FIG. 31 is a cross-sectional view of the same material that has been subjected to a primary etching process.

FIG. 32 is a cross-sectional view of the same material that has been subjected to a second etching process.

FIG. 33 is a front view of a masking-printed laminated sheet material according to still another embodiment of the present invention in a method for producing an engraved display molded article.

FIG. 34 is a sectional view taken along the line XXXIV-XXXIV of FIG. 32.

FIG. 35 is a front view of an engraved display molded product according to still another embodiment of the present invention.

36 is a sectional view taken along the line XXXVI-XXXVI of FIG. 35.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Aluminum thin plate 1A Aluminum plate part in the central surface area 1B Aluminum blank plate part 1a Anodized film on the entire surface 1b Etched end face of engraved hole 1b 'Two-stage etched section 1b1 Upper-stage etched end face 1b2 Lower-stage etched end Surface 1b3 Horizontal etched cross section 2 Opaque or transparent peelable support sheet, room temperature pressure-bondable synthetic resin film 2 'Opaque or transparent support sheet, heat-pressable synthetic resin film M laminated sheet material M' laminated sheet material 3 Masking image, Masking part, primary masking part, primary masking image part 3a Contour shape of masking image part 3 'Surrounding masking part 3 "Thin line-shaped masking bridge 4 Exposed part, exposed surface part 3A Character image part 3B Surrounding frame image part 5 Engraved hole 5a Etched concave surface 6 Aluminum plate Display part 6 'Display part by engraving hole 7 Support sheet to be stuck on the surface 8 Adhesive material with interleaf paper 8a Backing 8b Die-cut double-sided adhesive material 9 White image 11 Red printing ink surface 15 Bridge conductor 16 Secondary masking Printing and masking parts P1, P1 ', P2, P3, P4, P4', P4 ", P
5, P5 ', P6 Engraved display molding

Claims (17)

[Claims] 1. A laminated sheet material is produced by attaching a support sheet to the back surface of an aluminum sheet having an anodized film on its surface, and (b) the anodized film surface on the upper surface of the aluminum sheet. (2) Partially masking printing with a masking ink to form an image of an arbitrary shape defined by the masking portion itself and / or an image of an arbitrary shape composed of an unmasked exposed portion surrounded by the masking portion. (C) engraving the exposed portion by etching until reaching the support sheet surface on the back surface thereof;
(D) Then, the masking portion is removed, whereby the aluminum thin plate portion is formed into an engraved plate having a display portion having a predetermined shape formed of an aluminum plate portion and / or a display portion having a predetermined shape formed of a cutout hole. A method for producing an engraved display molded product of an aluminum sheet, characterized by being molded. 2. The method according to claim 1, wherein, after the step (c), anodizing treatment is performed to form an anodized film on the etched end face of the aluminum sheet surrounding the engraved hole, and then to perform masking. A method for producing an engraved display molded article, characterized by removing a part. 3. The method according to claim 1, wherein the support sheet is a transparent or opaque, room temperature pressure-bondable synthetic resin film. 4. The method according to claim 1, wherein the support sheet is a transparent or opaque synthetic resin film of a thermocompression bonding type. 5. A method for producing an engraved display molded product, wherein the support sheet is peeled off after the production method according to claim 1, 2, or 3. 6. An engraved display molded product obtained by the production method according to claim 1, 2, or 3, wherein a transparent support sheet is attached to the surface of the engraved display molded plate, and then the display molded product is formed. Removing the support sheet on the back surface of the above, and then attaching an interleaf double-sided pressure bonding material thereto. 7. The engraving method according to claim 1, wherein said support sheet is a transparent synthetic resin film, and the back surface of which is formed by engraving said engraving plate. A method for producing an engraved display molded product, characterized in that a transparent and colorless or colored adhesive piece is adhered to a position corresponding to a display portion comprising a hole. 8. The masking printing step (b) of the manufacturing method according to claim 1, wherein the masking image portion surrounded by the exposed portion and an aluminum margin plate portion electrically connected to a power supply outside the masking image portion. Printing at least one thin-line masking bridge connecting the masking image portion and the surrounding masking portion across the exposed portion at the same time as printing the surrounding masking portion, and then the etching process of (c). After performing an anodizing treatment of the etching end face of the aluminum sheet surrounding the engraving hole, and then removing the masking image portion and the surrounding masking portion, Manufacturing method. 9. A laminated sheet material comprising: (a) attaching a support sheet to the back surface of an aluminum sheet having an anodized film formed on its surface; (b) the anodized film surface on the upper surface of the aluminum sheet. First, a primary masking portion is partially printed with a primary masking ink, and the primary masking ink is further printed on the exposed portion adjacent to the primary masking portion along the periphery of the primary masking portion. (C) printing a secondary masking portion having a desired outer contour shape and a small width with a secondary masking ink having a different solvent;
Next, the exposed portion adjacent to the secondary masking portion is subjected to a primary etching process of forming an etching concave surface by engraving the exposed portion to the middle of the thickness of the aluminum plate. (D) Then, the secondary masking portion (E) Then, the exposed portion of the trace that has been removed from the secondary masking portion is carved to the middle of the thickness of the aluminum thin plate, and the etched concave surface formed earlier is carved to the support sheet surface. (F) removing the primary masking portion, and then performing a secondary etching process. 10. The masking printing step (b) of the manufacturing method according to claim 9, wherein the primary masking ink and the exposed primary masking image portion and the exposed inner portion surrounded by the exposed portion are covered with a primary masking ink. And printing the surrounding masking portion on an aluminum margin plate portion which is electrically connected to the anode for anodizing treatment, and simultaneously traverses the exposed portion with the primary masking image portion and the surrounding masking. At least one thin line-shaped masking bridge connecting the parts is printed, and the primary masking ink is formed on the exposed part adjacent to the primary masking image part along the periphery of the primary masking image part. Printing a secondary masking image portion having a desired outer contour shape and a small width with a secondary masking ink having a different solvent, and (c) then printing the secondary masking image portion and the secondary masking image portion. Performing a first etching process of forming an etching concave surface by engraving an exposed portion between the surrounding masking portion and the middle of the thickness of the aluminum plate,
(D) removing the secondary masking image portion; (e) then engraving the exposed portion of the removed trace of the secondary masking image portion halfway down the thickness of the aluminum sheet; Engraving the etching concave surface formed previously to the support sheet surface, and performing a second etching process for forming an engraved hole, (f) then performing anodizing on the formed two-stage etched cross section; (G) Next, a method for producing an engraved display molded product, wherein the primary masking image portion and the surrounding masking portion are removed. 11. The masking step (b) of the manufacturing method according to claim 9, wherein the first masking ink is surrounded by the primary masking ink inside the exposed primary masking image portion and outside the exposed portion. And a surrounding masking portion provided on an aluminum margin plate portion electrically connected to an anode for anodizing treatment, further printed on an exposed portion adjacent to the primary masking image portion. At the same time as printing the secondary masking image portion having a desired outer contour shape and a small width with the secondary masking ink having a different solvent from the primary masking ink along the periphery of the secondary masking image portion, Printing at least one thin-line masking bridge connecting the secondary masking image portion and the surrounding masking portion across; (c)
Subjecting the exposed portion between the secondary masking image portion and the surrounding masking portion to a halfway down the thickness of the aluminum plate to perform a primary etching process of forming an etching concave surface; Removing the secondary masking image portion and the masking bridge; (e) then engraving the exposed portion of the secondary masking image portion and the removed trace of the masking bridge halfway through the thickness of the aluminum sheet. Lowering and engraving the etching concave surface formed previously to the support sheet surface and performing a second etching process for forming an engraved hole; (f) Next, performing an anodizing process on the formed two-stage etched cross section And (g) removing the primary masking image portion and the surrounding masking portion. 12. A sculpture having a display portion comprising a hole cut out according to an image of an arbitrary shape and / or a display portion comprising an aluminum plate portion surrounded by a cutout hole, on an aluminum sheet covered with an anodized film. An engraved display molded product comprising a punched display molded plate, and a transparent or opaque support sheet adhered to the back of the engraved display molded plate. 13. An engraved display molded product comprising the individual display portions peeled from the support sheet of the engraved molded product according to claim 12. 14. An engraved display molded product obtained by attaching a support sheet to the front surface of the engraved molded product according to claim 12, and attaching an interleaf pressure bonding material to the back surface in place of the support sheet. 15. The colorless or colored anodic oxide film applied to the etched cut end surface of the periphery of the display portion having an arbitrary shape of the engraved and formed plate according to any one of claims 12 to 14, Engraved display moldings with the same or different color of the anodic oxide film on the surface of the engraved molded plate. 16. A contour of a lower etched end surface of a two-stage etched cross section formed on the engraved display molded product manufactured by the manufacturing method according to claim 9 to 11, is a contour of an upper etched end surface. Engraved display moldings with the same or different shape. 17. The engraved display molded product according to claim 16, wherein the color of the anodized film applied to the two-step etched section is the same as or different from the color of the anodized film on the surface of the engraved molded plate. Die display molded product.