A method for preparing aluminum white frosted bottom sign

Abstract

The invention relates to a method for preparing an aluminum white frosted bottom sign, and belongs to the technical field of sign making. The method scrapes and brushes the surface of a clean aviation aluminum plate using copper wire, then applies old powder and then performs acid immersion, and then applies photosensitive resin, performs plate exposure, performs the first dyeing, fills in red, anodizes, performs the second dyeing, removes the filler, and sprays varnish on the surface to obtain an aluminum white frosted bottom sign. The sign prepared by the method has a uniform frosted texture.

Description

Technical Field

[0001] The invention relates to a method for preparing an aluminum white frosted bottom sign, belonging to the technical field of sign making. Background Art

[0002] With the development and progress of society, the level of science and technology is changing with each passing day, and people's requirements for products are getting higher and higher. In some products that require a certain aesthetic appearance, their signs also need to have certain aesthetic properties. At present, aluminum signs usually have a smooth surface. How to frost aluminum signs to obtain a more textured product has not been reported in the prior art. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a method for preparing an aluminum white frosted bottom sign.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] A method for preparing an aluminum white frosted bottom sign, the method comprising the following steps:

[0006] (1) Select aviation aluminum plates and clean the surface of the plates;

[0007] (2) Use a copper wire to scrape one side of the cleaned plate 8 to 12 times back and forth, applying a force of 3 to 5 kg;

[0008] (3) Evenly brushing old powder on the surface of the plate after scraping and brushing, then rinsing with water, and then immersing in a nitric acid solution with a mass fraction of 40-60%, taking it out after 4-10 seconds, washing with water, and drying to obtain a plate with one side brushed white;

[0009] (4) Cut the plate according to the design requirements of the sign and pour photosensitive glue on the whitened side of the plate, shake it evenly to form a film, and expose it. The film thickness is controlled within the exposure time of 2 to 3 minutes and the development is normal to obtain the developed plate;

[0010] (5) The developed plate is sequentially subjected to first dyeing, red filling, anodizing, second dyeing, de-filling (material remaining on the sign), and surface varnishing treatment to obtain an aluminum white frosted bottom sign.

[0011] Preferably, in step (1), the aviation aluminum is 2A11 aluminum alloy or 2A12 aluminum alloy.

[0012] Preferably, in step (1), during the cleaning process: first remove the surface oil stains, then remove the surface oxides, and finally grind the plate.

[0013] Preferably, the copper wire in step (2) is brass wire.

[0014] Preferably, in step (5), during the first dyeing: first, the developed plate is rinsed to remove the unexposed glue during the exposure process; then, it is placed in the dyeing solution, and after dyeing for 10 to 20 seconds, it is etched; then, it is immersed in the photosensitive solution for fading for 5 to 6 seconds, washed with water, and shaken dry.

[0015] Preferably, in step (5), when filling in red: rosin liquid is used to treat the area to be filled in red according to design requirements.

[0016] Preferably, in step (5), during the second dyeing, the anodized plate is first rinsed and placed in a dyeing solution for 1 to 2 minutes, then taken out, rinsed, and placed in a sodium dodecyl sulfate solution for 5 to 6 seconds of surface fading, and finally rinsed and dried.

[0017] Preferably, in step (5), when removing the filler: the board after the second dyeing is rinsed with banana water to melt and dry the filler completely.

[0018] Preferably, in step (5), the surface is sprayed with varnish and then dried at 60 to 80° C. for 1.5 to 2 hours.

[0019] Beneficial Effects

[0020] The present invention scrapes and brushes the surface of a clean aviation aluminum plate with copper wire, then applies old powder and then pickles it, and then applies photosensitive glue, exposure, first dyeing, red filling, anodizing, second dyeing, filler removal and surface varnish spraying to obtain an aluminum white frosted bottom label. In the method, the pressure of the copper wire during scraping is controlled to make the surface of the plate rough and increase the adhesion of the old powder, while the concentration of the nitric acid solution and the pickling time are controlled to uniformly corrode the plate, and after anodizing, a white bottom label with a uniform frosted texture is obtained. In addition, in the method, the content on the label can be made clearer and red filling is facilitated by controlling the exposure time. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with specific embodiments.

[0022] Example 1

[0023] A method for preparing an aluminum white frosted bottom sign, the method comprising the following steps:

[0024] (1) Select aviation aluminum plates and clean the surface of the plates;

[0025] (2) Use a copper wire to scrape one side of the cleaned plate 10 times back and forth, applying a force of 3 kg during the scraping;

[0026] (3) Evenly brushing old powder on the surface of the plate after scraping and brushing, then rinsing with water, and then immersing in a 60% by mass nitric acid solution, taking it out after 4 seconds, washing with water, and drying to obtain a plate with one side brushed white;

[0027] (4) Cut the plate according to the design requirements of the sign and pour photosensitive glue on the whitened side of the plate, place it on a glue shaker and shake it evenly to form a film, expose the plate, and control the film thickness within 3 minutes of exposure time to develop normally, and obtain the developed plate;

[0028] (5) The developed plate is sequentially subjected to first dyeing, red filling, anodizing, second dyeing, filler removal and surface varnish spraying to obtain an aluminum white frosted bottom sign.

[0029] In step (1):

[0030] The aviation aluminum is 2A11 aluminum alloy.

[0031] During cleaning: first clean the surface of the plate with gasoline, then place it in a degreasing solution for 15 seconds, rinse with water and then enter a nitric acid solution to remove surface oxides, and finally use a brushing machine to brush and polish the plate to make the surface uniform and scratch-free.

[0032] The copper wire in step (2) is brass wire.

[0033] In step (5):

[0034] During the first dyeing: first rinse the developed plate to remove the glue that was not exposed during the platemaking process; then put it into the dyeing solution used for red dyeing. During the dyeing process, the dyeing solution must flow so that the dyeing is uniform. After dyeing for 20 seconds, use an etching machine to etch it; then rinse with water and immerse it in the photosensitive solution to remove the red film. The fading time is 5 to 6 seconds. After washing with water, immediately shake it dry on a glue shaker.

[0035] When filling red: Use rosin liquid to fill the part to be filled red according to the design requirements, and anodizing can be carried out after the surface is dry.

[0036] For the second dyeing: first rinse the anodized plate and place it in the dyeing solution used for black dyeing for 1 minute, take it out, rinse it, and place it in a 1% sodium dodecyl sulfate solution for 5 to 6 seconds to fade the surface, rinse it with water and blow it dry with oil-free compressed air.

[0037] When removing the filler: rinse the board after the second dyeing with banana water to melt and dry all the fillers.

[0038] The surface was sprayed with varnish and then dried at 60°C for 2 hours.

[0039] The sign obtained in this embodiment has a uniform frosted texture.

[0040] Example 2

[0041] A method for preparing an aluminum white frosted bottom sign, the method comprising the following steps:

[0042] (1) Select aviation aluminum plates and clean the surface of the plates;

[0043] (2) Use copper wire to scrape one side of the cleaned plate 8 times back and forth, applying a force of 3 kg during scraping.

[0044] (3) Evenly brushing old powder on the surface of the plate after scraping and brushing, then rinsing with water, and then immersing in a 40% by mass nitric acid solution, taking it out after 10 seconds, washing with water, and drying to obtain a plate with one side brushed white;

[0045] (4) Cut the plate according to the design requirements of the sign and pour photosensitive glue on the whitened side of the plate, place it on a glue shaker and shake it evenly to form a film, expose the plate, and control the film thickness within 2 minutes of exposure time to develop normally, and obtain the developed plate;

[0046] (5) The developed plate is sequentially subjected to first dyeing, red filling, anodizing, second dyeing, filler removal and surface varnish spraying to obtain an aluminum white frosted bottom sign.

[0047] In step (1):

[0048] The aviation aluminum is 2A12 aluminum alloy.

[0049] During cleaning: first clean the surface of the plate with gasoline, then place it in a degreasing solution for 15 seconds, rinse with water and then enter a nitric acid solution to remove surface oxides, and finally use a brushing machine to brush and polish the plate to make the surface uniform and scratch-free.

[0050] The copper wire in step (2) is brass wire.

[0051] In step (5):

[0052] During the first dyeing: first rinse the developed plate to remove the glue that was not exposed during the platemaking process; then put it into the dyeing solution used for red dyeing. During the dyeing process, the dyeing solution must flow so that the dyeing is uniform. After dyeing for 10 seconds, use an etching machine to etch it; then rinse with water and immerse it in the photosensitive solution to remove the red film. The fading time is 5 to 6 seconds. After washing with water, immediately shake it dry on a glue shaker.

[0053] When filling red: Use rosin liquid to fill the part to be filled red according to the design requirements, and anodizing can be carried out after the surface is dry.

[0054] For the second dyeing: first rinse the anodized plate and place it in the dyeing solution used for black dyeing for 2 minutes, take it out, rinse it, and place it in a 1% sodium dodecyl sulfate solution for 5 to 6 seconds to fade the surface, rinse it with water and blow it dry with oil-free compressed air.

[0055] When removing the filler: rinse the board after the second dyeing with banana water to melt and dry all the fillers.

[0056] The surface was sprayed with varnish and then dried at 80°C for 1.5 hours.

[0057] The sign obtained in this embodiment has a uniform frosted texture.

[0058] Comparative Example 1

[0059] In step (3) of this comparative example, a nitric acid solution with a mass concentration of 30% was used and taken out after 30 seconds; the rest was the same as in Example 1.

[0060] The sign obtained in this comparative example has a poor frosting effect due to uneven corrosion on the surface of the plate after acid immersion in step (3).

[0061] In summary, the invention includes but is not limited to the above embodiments. Any equivalent substitution or partial improvement made under the spirit and principle of the invention shall be deemed to be within the protection scope of the invention.

Claims

1. A method for preparing an aluminum white frosted bottom sign. Features: The method steps include: (1) Select aviation aluminum plates and clean the surface of the plates; (2) Use a copper wire to scrape one side of the cleaned plate 8 to 12 times back and forth, applying a force of 3 to 5 kg; (3) Evenly brushing old powder on the surface of the plate after scraping and brushing, then rinsing with water, and then immersing in a nitric acid solution with a mass fraction of 40-60%, taking it out after 4-10 seconds, washing with water, and drying to obtain a plate with one side brushed white; (4) Cut the plate according to the design requirements of the sign and pour photosensitive glue on the whitened side of the plate, shake it evenly to form a film, and expose it. The film thickness is controlled within the exposure time of 2 to 3 minutes and the development is normal to obtain the developed plate; (5) The developed plate is subjected to a first dyeing process, red filling, anodizing, a second dyeing process, de-filling and surface varnishing treatment in sequence to obtain an aluminum white frosted bottom sign; In step (5), during the first dyeing, the developed plate is first rinsed to remove the unexposed glue during the printing process; then placed in the dyeing solution, dyed for 10 to 20 seconds, and then etched; then immersed in the photosensitive solution for 5 to 6 seconds to fade, washed with water, and shaken dry; In step (5), when filling in red: use rosin liquid to treat the area to be filled in red according to the design requirements; In step (5), during the second dyeing, the anodized plate is first rinsed and placed in a dyeing solution for 1 to 2 minutes, then taken out, rinsed, and placed in a sodium dodecyl sulfate solution for 5 to 6 seconds to fade the surface, and finally rinsed and dried; In step (5), when removing the filler: the plate after the second dyeing is rinsed with banana water to make the filler completely melt and dry; In step (5), the surface is sprayed with varnish and then dried at 60 to 80° C. for 1.5 to 2 hours.

2. A method for preparing an aluminum white frosted bottom sign as claimed in claim 1, Features: In step (1), the aviation aluminum is 2A11 aluminum alloy or 2A12 aluminum alloy.

3. A method for preparing an aluminum white frosted bottom sign as claimed in claim 1, Features: In step (1), during the cleaning process: first remove the surface oil, then remove the surface oxides, and finally grind the plate.

4. A method for preparing an aluminum white frosted bottom sign as claimed in claim 1, Features: The copper wire in step (2) is brass wire.

5. A method for preparing an aluminum white frosted bottom sign as claimed in claim 1, Features: In step (1), the aviation aluminum is 2A11 aluminum alloy or 2A12 aluminum alloy; during the cleaning process, the surface oil is firstly removed, then the surface oxide is removed, and finally the plate is ground; The copper wire in step (2) is brass wire; In step (5): During the first dyeing process: first, rinse the developed plate to remove the unexposed glue during the printing process; then put it into the dyeing solution, dye it for 10 to 20 seconds, and then etch it; then immerse it in the photosensitive solution to fade for 5 to 6 seconds, wash it with water, and shake it dry; When filling in red: use rosin liquid to treat the areas that need to be filled in red according to design requirements; During the second dyeing process: First, rinse the anodized sheet and then immerse it in the dyeing solution for 1 - 2 minutes. Take it out, rinse it, and then immerse it in the sodium dodecyl sulfonate solution for 5 - 6 seconds for surface decolorization. Finally, rinse and dry it. During the filler removal process: Rinse the sheet after the second dyeing with banana oil to completely melt the filler and then dry it. After spraying clear varnish on the surface, bake it at 60 - 80 °C for 1.5 - 2 hours.