Thangka protection box and production method

Abstract

The invention relates to the technical field of Thangka protection boxes, and particularly discloses a Thangka protection box and a production method thereof, the Thangka protection box comprises a main body material, a decorative material, an adhesive, an antibacterial nano coating and a sealant; through the nano coating and the ultraviolet-proof coating, the protection box can effectively prevent invasion of moisture, mould and ultraviolet rays, and it is ensured that the Thangka does not fade or go mouldy in long-term storage; decoration materials such as jade, agate and mother-of-pearl powder are added into the protection box, so that the protection box has protection and ornamental functions, and the whole appearance has artistic feeling and cultural charm; the low-melting-point alloy framework enhances the shock resistance and impact resistance of the box body, so that the box body is more stable in transportation and display and suitable for long-term use, environment-friendly materials such as biological resin and a photochromic coating are added, carbon footprint is reduced, a new direction is provided for future process innovation, and the market prospect is wide. The new materials enable the protection box to show various colors under different light rays, and a modernized visual effect is added to the Thangka.

Description

Technical Field

[0001] The invention belongs to the technical field of thangka protection boxes, and in particular relates to a thangka protection box and a production method thereof. Background Art

[0002] The main function of the thangka protection box is to protect and display thangka, a unique art form. As a treasure of Tibetan Buddhist art, thangka not only carries profound religious and cultural connotations, but also displays exquisite artistic skills and unique aesthetic value. Therefore, the material selection and requirements of the thangka protection box are extremely strict. It must be able to fully protect the thangka from the external environment and have a certain aesthetic and practicality.

[0003] Traditional thangka protection measures are often unable to effectively resist the damage of ultraviolet rays, causing the thangka pigments to fade and the images to age.

[0004] In this regard, the inventor proposes a thangka protection box and a production method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a thangka protection box and a production method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A thangka protection box, comprising:

[0008] The main body material includes a box body and an ultraviolet absorber, wherein the box body is made of transparent acrylic or transparent bio-resin, and the ultraviolet absorber is coated on the surface of the box body;

[0009] Decorative materials include jade powder or agate powder, jade or agate flakes and copper powder. The jade powder or agate powder is ground into fine powder and added to transparent acrylic or transparent bio-resin. The jade or agate flakes are cut into small pieces and inlaid on the surface or inside of the box body to increase the aesthetics. The copper powder is used as an antioxidant to increase the luxury of the protective box and also helps to resist oxidation.

[0010] Adhesives, used to bond decorative materials;

[0011] Antibacterial nano-coating, applied on the surface of transparent acrylic or transparent bio-resin;

[0012] The sealant is UV glue, which is applied between the gaps of the box body to increase the sealing and prevent the thangka from being affected by air.

[0013] Preferably, the ultraviolet absorber is one or more of octyl salicylate and ethylhexyl salicylate to prevent ultraviolet rays from damaging the thangka inside the box.

[0014] Preferably, the antibacterial nano coating is TiO2 or ZnO nanoparticles.

[0015] A method for producing a thangka protection box comprises the following steps:

[0016] S1. Material selection: according to the size of the thangka, use CNC to cut acrylic or transparent bio-resin with a thickness of 3 to 5 mm. Jade or agate can be cut into thin sheets with a thickness of 1 to 1.5 mm.

[0017] S2, multi-layer molding, through the lamination process, the bottom layer is molded into a transparent base layer of 1 to 1.5 mm, an anti-ultraviolet coating is sprayed on the transparent base layer, a mixed layer of mother-of-pearl powder and resin is added to the middle layer, and a photochromic coating is added to the outer layer;

[0018] S3. Make a fixed tray, place the frame of the inlaid part into the mold, heat and cast the alloy frame, use a 3D printer to print the fixed tray of jade or agate, and the height and thickness of the fixed tray should match the jade or agate to ensure stability;

[0019] S4. Embed jade or agate, laser engrave the outer surface of the protective box with a depth of 0.2 mm to ensure clear lines without damaging the box structure. Place the micro-engraved jade or agate into the grooves engraved by the laser, apply UV glue to the joints to ensure that they are firmly fixed and beautiful to prevent air and moisture from entering the box;

[0020] S5. Curing and polishing. After all coatings are completed, use UV lamp to cure to ensure that each layer reaches the highest strength. After curing, polish the surface with 0.5 micron polishing powder and fine sandpaper until the surface is smooth and flat.

[0021] S6. Assembly inspection: assemble the various components into an overall protective box to ensure that the structure is stable and convenient for loading and unloading thangkas, and conduct performance tests to ensure that the box meets expectations.

[0022] Preferably, the thickness of the mixed layer of mother-of-pearl powder and resin is 0.3-0.5 mm, the powder particle size is 20-30 microns, the content ratio is 5%-10%, and the thickness of the photochromic coating is 0.2-0.3 mm.

[0023] Preferably, in step S2, the thickness of the anti-ultraviolet coating is 0.5 to 1 mm, 10% to 15% of zinc oxide particles are added to the coating, and the ultraviolet transmittance is less than 5%.

[0024] Preferably, the mold in step S3 is a tin-bismuth alloy mold, and the melting point of the alloy is 140°C.

[0025] Preferably, the printing material for 3D printing in step S3 is PLA or ABS, and the printing layer thickness is 0.1 to 0.18 mm.

[0026] Preferably, in step S5, the UV lamp curing time is 2 hours, and the polishing transmittance reaches more than 95%.

[0027] Preferably, the performance test in step S6 includes light transmittance, weather resistance and antibacterial test.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The present invention uses nano-coating and anti-ultraviolet coating to effectively prevent the thangka from being damaged by moisture, mold and ultraviolet rays, ensuring that the thangka will not fade or mold during long-term storage; decorative materials such as jade, agate and mother-of-pearl powder are added to the protective box, so that the protective box has both protective and ornamental functions, and the overall appearance is more artistic and cultural; the low-melting-point alloy skeleton enhances the shock and impact resistance of the box body, making it more stable during transportation and display, and suitable for long-term use.

[0030] (2) The present invention adds environmentally friendly materials such as bio-resin and photochromic coating, which not only reduces the carbon footprint, but also provides a new direction for future process innovation. These new materials enable the protection box to show various colors under different light, adding a modern visual effect to the thangka. The thangka protection box can not only protect the thangka, but also can be displayed as a work of art to enhance the overall display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of a method for producing a thangka protection box of the present invention;

[0032] Figure 2 It is a block diagram of the main material composition of the present invention;

[0033] Figure 3 It is a block diagram of the decorative material composition of the present invention;

[0034] Figure 4 It is a block diagram of the composition of the ultraviolet absorber of the present invention;

[0035] Figure 5 It is a block diagram of the composition of the antibacterial nano coating of the present invention;

[0036] Figure 6 This is a block diagram of the 3D printing material composition of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] See also Figures 1 to 6 As shown, a thangka protection box includes:

[0040] The main body material includes a box body and an ultraviolet absorber, wherein the box body is made of transparent acrylic or transparent bio-resin, and the ultraviolet absorber is coated on the surface of the box body;

[0041] Decorative materials include jade powder, jade flakes and copper powder. The jade powder is ground into fine powder and added to transparent acrylic or transparent bio-resin. The jade flakes are cut into small pieces and inlaid on the surface or inside of the box to increase the aesthetics. The copper powder is used as an antioxidant to increase the luxury of the protective box and also helps to resist oxidation.

[0042] Adhesives, used to bond decorative materials;

[0043] Antibacterial nano-coating, applied on the surface of transparent bio-resin;

[0044] The sealant is UV glue, which is applied between the gaps of the box body to increase the sealing and prevent the thangka from being affected by air.

[0045] Specifically, the ultraviolet absorber is octyl salicylate, which prevents ultraviolet rays from damaging the thangka inside the box.

[0046] Specifically, the antibacterial nano coating is TiO2 nanoparticles, 5 nanometers thick.

[0047] A method for producing a thangka protection box comprises the following steps:

[0048] S1. Material selection: according to the size of thangka, use CNC to cut acrylic or transparent bio-resin with a thickness of 5 mm, and jade is selected in the form of thin slices with a thickness of 1 mm;

[0049] S2. Multilayer molding: Through the lamination process, the bottom layer is molded into a 1 mm transparent base layer, and an anti-ultraviolet coating is sprayed on the transparent base layer. The thickness of the anti-ultraviolet coating is 0.5 mm. 10% of nano zinc oxide particles are added to the coating, and the ultraviolet transmittance is less than 5%. A mixed layer of mother-of-pearl powder and resin is added to the middle layer. The thickness of the mixed layer of mother-of-pearl powder and resin is 0.3 mm, the powder particle size is 20 microns, and the content ratio is 5%. A photochromic coating is added to the outer layer. The thickness of the photochromic coating is 0.2 mm, so that the protective box has a slight gloss.

[0050] S3. Make a fixed tray, place the frame of the inlaid part into a tin-bismuth alloy mold, heat the alloy to a molten state, cast the alloy skeleton, use a 3D printer, the printing material for 3D printing is PLA, the printing layer thickness is 0.1 mm, print the fixed tray of the jade, the height and thickness of the fixed tray are matched with the jade to ensure stability;

[0051] S4. Embed the jade and perform laser engraving on the outer surface of the protective box with a depth of 0.2 mm to ensure clear lines without damaging the box structure. Place the micro-engraved jade into the grooves engraved by the laser and apply UV glue to the joints to ensure that they are firmly fixed and beautiful to prevent air and moisture from entering the box.

[0052] S5. Curing and polishing. After all coatings are completed, use UV lamp to cure for 2 hours to ensure that each layer reaches the highest strength. After curing, polish the surface with 0.5 micron polishing powder and fine sandpaper until the surface is smooth and flat, and the polished transmittance reaches more than 95%;

[0053] S6. Assembly inspection: assemble the various components into an overall protective box to ensure that the structure is stable and convenient for loading and unloading thangkas, and conduct performance tests to ensure that the box meets expectations.

[0054] Embodiment 2:

[0055] refer to Figures 1 to 6 As shown, a thangka protection box includes:

[0056] The main body material includes a box body and an ultraviolet absorber, wherein the box body is made of transparent acrylic or transparent bio-resin, and the ultraviolet absorber is coated on the surface of the box body;

[0057] Decorative materials include agate powder, agate flakes and copper powder. The agate powder is ground into micro powder and added to transparent acrylic or transparent bio-resin. The agate flakes are cut into small pieces and inlaid on the surface or inside of the box to increase the aesthetics. The copper powder is used as an antioxidant to increase the luxury of the protective box and also helps to resist oxidation.

[0058] Adhesives, used to bond decorative materials;

[0059] Antibacterial nano-coating, applied on the transparent acrylic surface;

[0060] The sealant is UV glue, which is applied between the gaps of the box body to increase the sealing and prevent the thangka from being affected by air.

[0061] Specifically, the ultraviolet absorber is octyl salicylate, which prevents ultraviolet rays from damaging the thangka inside the box.

[0062] Specifically, the antibacterial nano coating is TiO2 nanoparticles, 5 nanometers thick.

[0063] A method for producing a thangka protection box comprises the following steps:

[0064] S1. Material selection: according to the size of thangka, use CNC to cut acrylic or transparent bio-resin with a thickness of 5 mm, and agate in the form of thin sheets with a thickness of 1 mm;

[0065] S2. Multilayer molding: Through the lamination process, the bottom layer is molded into a 1 mm transparent base layer, an anti-ultraviolet coating is sprayed on the transparent base layer, the thickness of the anti-ultraviolet coating is 0.5 mm, 10% of nano zinc oxide particles are added to the coating, a mother-of-pearl powder and resin mixed layer is added to the middle layer, the thickness of the mother-of-pearl powder and resin mixed layer is 0.3 mm, the powder particle size is 20 microns, and the content ratio is 5%, and a photochromic coating is added to the outer layer, the thickness of the photochromic coating is 0.2 mm, so that the protective box has a slight gloss;

[0066] S3. Make a fixed tray, place the frame of the inlaid part into a tin-bismuth alloy mold, heat the alloy to a molten state, cast the alloy skeleton, use a 3D printer, the printing material for 3D printing is PLA, the printing layer thickness is 0.1 mm, print the fixed tray of agate, the height and thickness of the fixed tray are matched with agate to ensure stability;

[0067] S4. Embed agate, laser engrave the outer surface of the protective box with a depth of 0.2 mm to ensure clear lines without damaging the box structure. Place the micro-engraved agate into the grooves engraved by the laser, apply UV glue to the joints to ensure that they are firmly fixed and beautiful to prevent air and moisture from entering the box.

[0068] S5. Curing and polishing. After all coatings are completed, use UV lamp to cure for 2 hours to ensure that each layer reaches the highest strength. After curing, polish the surface with 0.5 micron polishing powder and fine sandpaper until the surface is smooth and flat, and the polished transmittance reaches more than 95%;

[0069] S6. Assembly inspection: assemble the various components into an overall protective box to ensure that the structure is stable and convenient for loading and unloading thangkas, and conduct performance tests to ensure that the box meets expectations.

[0070] Embodiment three:

[0071] This design is specifically used in tourist attractions, cultural markets, specialty shops, etc. With the increasing popularity of cultural tourism, souvenirs with local characteristics and cultural connotations are very popular. As one of the representatives of Tibetan culture, the thangka protection box can be designed into an exquisite tourist souvenir, which can not only show the unique charm of Tibetan culture, but also meet the tourists' dual needs for practicality and ornamental value of souvenirs.

[0072] For further information, see Figures 1 to 6 As shown, a thangka protection box includes:

[0073] The main body material includes a box body and an ultraviolet absorber, wherein the box body is made of transparent acrylic or transparent bio-resin, and the ultraviolet absorber is coated on the surface of the box body;

[0074] Decorative material, copper powder, the copper powder is used as an antioxidant to increase the luxury of the protective box and also helps to resist oxidation;

[0075] Adhesives, used to bond decorative materials;

[0076] Antibacterial nano-coating, applied on the transparent acrylic surface;

[0077] The sealant is UV glue, which is applied between the gaps of the box body to increase the sealing and prevent the thangka from being affected by air.

[0078] Specifically, the ultraviolet absorber is ethylhexyl salicylate, which prevents ultraviolet rays from damaging the thangka inside the box.

[0079] Specifically, the antibacterial nano coating is ZnO nanoparticles, 5 nanometers thick.

[0080] A method for producing a thangka protection box comprises the following steps:

[0081] S1. Material selection: according to the size of thangka, use CNC to cut acrylic or transparent bio-resin with a thickness of 5 mm;

[0082] S2. Multilayer molding: Through the lamination process, the bottom layer is molded into a 1 mm transparent base layer, an anti-ultraviolet coating is sprayed on the transparent base layer, the thickness of the anti-ultraviolet coating is 0.5 mm, 10% of nano zinc oxide particles are added to the coating, a mother-of-pearl powder and resin mixed layer is added to the middle layer, the thickness of the mother-of-pearl powder and resin mixed layer is 0.3 mm, the powder particle size is 20 microns, and the content ratio is 5%, and a photochromic coating is added to the outer layer, the thickness of the photochromic coating is 0.3 mm, so that the protective box has a slight gloss;

[0083] S3. Make a fixed tray, put the frame into the mold, and print it using a 3D printer. The printing material for 3D printing is ABS, and the printing layer thickness is 0.1 mm.

[0084] S4, curing and polishing. After all coatings are completed, use UV lamp to cure for 2 hours to ensure that each layer reaches the highest strength. After curing, polish the surface with 0.5 micron polishing powder and fine sandpaper until the surface is smooth and flat, and the polished transmittance reaches more than 95%;

[0085] S5. Assembly inspection: assemble the various components into an overall protective box to ensure that the structure is stable and convenient for loading and removing thangkas, and conduct performance tests to ensure that the box meets expectations.

[0086] The light transmittance, weather resistance and antibacterial properties of the thangka protection boxes in Example 1, Example 2 and Example 3 were tested to evaluate the light transmittance, weather resistance and antibacterial properties of the thangka protection boxes, as follows:

[0087] 1. Light transmittance test steps:

[0088] Equipment: Light transmittance tester, calibrated.

[0089] Sample preparation: Place the complete thangka protection box on the test bench and ensure that the test area is unobstructed.

[0090] Test operation: Turn on the transmittance tester and set the light source to simulate natural light (D65 light source).

[0091] Aim the light source of the tester at the transparent part of the protective box and record the transmittance data of different areas (such as center, edge).

[0092] Repeat the test at least three times and take the average to improve accuracy.

[0093] Result evaluation: Based on the test results, evaluate the light transmittance.

[0094] 2. Weather resistance test steps:

[0095] Test steps:

[0096] Equipment preparation: Constant temperature and humidity chamber, set the temperature range to -20℃ to 50℃, and the humidity range to 20%RH to 80%RH.

[0097] UV Aging Test Chamber: simulates high-intensity UV radiation to accelerate the aging process.

[0098] Sample preparation: Select several thangka protection boxes of the same specifications as test samples.

[0099] Test operation: Temperature and humidity cycle test, place the sample in a constant temperature and humidity chamber, and perform cycle test according to the preset temperature and humidity change program. Each cycle period is at least 7 days, and a total of 3 cycles are performed.

[0100] UV aging test: The samples are exposed to the UV aging test chamber for 72 hours to simulate the effects of years of outdoor UV exposure.

[0101] Result evaluation: Observe the appearance changes of the sample, such as fading, deformation, cracks, etc.

[0102] Measure changes in physical properties such as transmittance and strength, and evaluate weather resistance.

[0103] 3. Antibacterial test steps:

[0104] Purpose of the test: To verify the inhibitory effect of the antibacterial nano-coating on the surface of the thangka protective box on common bacteria.

[0105] Test steps:

[0106] Equipment preparation: sterile operating table, microbial incubator, inoculation loop, LB culture medium.

[0107] Bacterial preparation: Staphylococcus aureus and Escherichia coli were selected as test bacteria and pure cultured.

[0108] Sample preparation: Select a certain area on the surface of the thangka protection box to ensure that the area is evenly coated with the antibacterial nano-coating.

[0109] Test operation: Use an inoculation loop to evenly spread a certain amount of test bacteria on the sample surface.

[0110] The coated sample was placed in a microbial incubator and cultured at a suitable temperature for 24 hours.

[0111] After the incubation, observe and record the growth of colonies on the sample surface.

[0112] Result evaluation: Compared with the control sample without antibacterial coating, the reduction ratio of the number of colonies in the coated sample was evaluated.

[0113] According to industry standards, judge whether the antibacterial effect is qualified.

[0114] The data obtained by testing the above-mentioned Embodiment 1, Embodiment 2 and Embodiment 3 are shown in Table 1 below:

[0115]

[0116]

[0117] Table 1

[0118] As can be seen from the above, the protection box can effectively prevent moisture, mold and ultraviolet damage through nano coating and anti-ultraviolet coating, ensuring that the thangka will not fade or mold during long-term storage; adding decorative materials such as jade, agate and mother-of-pearl powder to the protection box makes the protection box have both protection and ornamental functions, and the overall appearance is more artistic and cultural; the low-melting-point alloy frame enhances the shock and impact resistance of the box, making it more stable during transportation and display, and suitable for long-term use;

[0119] Adding environmentally friendly materials such as bio-resin and photochromic coating not only reduces the carbon footprint, but also provides a new direction for future process innovation. These new materials enable the protective box to show a variety of colors under different light, adding a modern visual effect to the thangka. The thangka protective box can not only protect the thangka, but also be displayed as a work of art to enhance the overall display effect.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0121] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0122] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thangka protection box, characterized in that: include: The main body material includes a box body and an ultraviolet absorber, wherein the box body is made of transparent acrylic or transparent bio-resin, and the ultraviolet absorber is coated on the surface of the box body; Decorative materials include jade powder or agate powder, jade or agate flakes and copper powder, wherein the jade powder or agate powder is ground into fine powder and added into transparent acrylic or transparent bio-resin, the jade or agate flakes are cut into small pieces and inlaid on the surface or inside of the box, and the copper powder is used as an antioxidant; Adhesives, used to bond decorative materials; Antibacterial nano-coating, applied on the surface of transparent acrylic or transparent bio-resin; The sealant is UV glue and is applied between the gaps of the box body.

2. A thangka protection box according to claim 1, characterized in that: The ultraviolet absorber is one or more of octyl salicylate and ethylhexyl salicylate.

3. The thangka protection box according to claim 1, characterized in that: The antibacterial nano coating is TiO2 or ZnO nanoparticles.

4. A method for producing a thangka protection box according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Material selection: according to the size of the thangka, use CNC to cut acrylic or transparent bio-resin with a thickness of 3 to 5 mm. Jade or agate can be cut into thin sheets with a thickness of 1 to 1.5 mm. S2, multi-layer molding, through the lamination process, the bottom layer is molded into a transparent base layer of 1 to 1.5 mm, an anti-ultraviolet coating and a nano coating are sprayed on the transparent base layer, a mixed layer of mother-of-pearl powder and resin is added to the middle layer, and a photochromic coating is added to the outer layer; S3. Make a fixed tray, place the frame of the inlaid part into the mold, heat and cast the alloy frame, use a 3D printer to print the fixed tray of jade or agate, and the height and thickness of the fixed tray should match the jade or agate to ensure stability; S4. Embed jade or agate, laser engrave the outer surface of the protective box with a depth of 0.2 mm, put the micro-engraved jade or agate into the groove engraved by the laser, and apply UV glue to the joint to fix it; S5, curing and polishing. After all coatings are completed, use UV lamp to cure. After curing, polish the surface with 0.5 micron polishing powder and fine sandpaper. S6. Assembly test: assemble the various components into an overall protective box and conduct performance test.

5. The method for producing a thangka protection box according to claim 4, characterized in that: The thickness of the mixed layer of mother-of-pearl powder and resin is 0.3-0.5 mm, the powder particle size is 20-30 microns, the content ratio is 5%-10%, and the thickness of the photochromic coating is 0.2-0.3 mm.

6. The method for producing a thangka protection box according to claim 4, characterized in that: In step S2, the thickness of the anti-ultraviolet coating is 0.5 to 1 mm, 10% to 15% of zinc oxide particles are added to the coating, and the ultraviolet transmittance is less than 5%.

7. The method for producing a thangka protection box according to claim 4, characterized in that: In step S3, the mold is a tin-bismuth alloy mold, and the melting point of the alloy is 140°C.

8. The method for producing a thangka protection box according to claim 4, characterized in that: The printing material for 3D printing in step S3 is PLA or ABS, and the printing layer thickness is 0.1 to 0.18 mm.

9. The method for producing a thangka protection box according to claim 4, characterized in that: In step S5, the UV lamp curing time is 2 hours, and the light transmittance of the polishing reaches more than 95%.

10. The method for producing a thangka protection box according to claim 4, characterized in that: The performance tests in step S6 include light transmittance, weather resistance and antibacterial properties tests.

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