CN109552711B - Method for packaging product by using liquid metal - Google Patents
Method for packaging product by using liquid metal Download PDFInfo
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- CN109552711B CN109552711B CN201710882619.3A CN201710882619A CN109552711B CN 109552711 B CN109552711 B CN 109552711B CN 201710882619 A CN201710882619 A CN 201710882619A CN 109552711 B CN109552711 B CN 109552711B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
- B65B61/025—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging for applying, e.g. printing, code or date marks on material prior to packaging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0058—Digital printing on surfaces other than ordinary paper on metals and oxidised metal surfaces
Abstract
The invention provides a method for packaging a product by using liquid metal, which comprises the following steps: s1, printing a liquid metal prepared in advance on the surface of a product to be packaged through a pattern template to be printed prepared in advance to obtain a liquid metal packaging layer; and S2, preparing a transparent and flexible light covering protective layer on the surface of the liquid metal packaging layer. According to the invention, the liquid metal is printed on the surface of the product to be packaged, so that the complex process operation in product packaging is avoided, the printing method is simple and convenient, pollution is avoided, and the anti-corrosion and anti-aging effects are excellent; the service life can be prolonged through the light-covering protective layer, and the attractiveness of the product is obviously improved; the conductive performance of the liquid metal is utilized, the packaging pattern can be converted into a light-emitting circuit, and the attraction of the product is increased.
Description
Technical Field
The invention relates to the technical field of product packaging, in particular to a method for packaging a product by using liquid metal.
Background
The packaging material is used for manufacturing packaging containers, packaging printing and the like to meet the packaging requirements of products. The metal packaging material has the advantages of good mechanical properties such as firmness, compression resistance, shatterproof property and the like, good comprehensive protection properties such as air impermeability, moisture resistance and the like, good appearance, good processing performance, rich resources and the like. Metal packaging materials generally focus on appearance and practicality. At present, in the aspect of metal packaging technology, generally used methods include vacuum plating, gold stamping, cold stamping, anodic oxidation, aluminum spraying technology, magnetron sputtering and the like.
The vacuum plating is a process of performing metal coating on the surface of a product in a vacuum pumping and electrode mode. The vacuum plating is suitable for packaging large-area bottle bodies and bottle caps, plastic products with metal effects can be obtained, and common plating metals comprise aluminum, chromium, copper, silver, gold and the like. However, the products packed by vacuum plating have poor adhesion, and the packing pattern on the surface of the products becomes blurred when the products are used for a long time.
The gold stamping is to transfer the metal foil to the surface of a printed article in a hot pressing mode or only in a pressure mode, so that the decorative effect of metal texture of various colors is achieved. The gold stamping is suitable for stamping complicated logos, patterns with various patterns and the like, and the temperature, the pressure, the speed and the like need to be controlled well. However, the gold stamping process is not suitable for articles with uneven surfaces, and articles such as metal, ceramic, glass and the like are not suitable for being packaged by the process, and the problems of infirm hot stamping and the like exist.
The anodic oxidation is to form a layer of oxide film package with various colors, decoration and protection on the surface of the aluminum alloy by using an electrolytic oxidation method, and the process is slowly eliminated by more advanced process technology.
Magnetron sputtering is a process of depositing on the surface of an object to be plated by using enough kinetic energy carried by target atoms, but the product packaged by the method has poor penetrability and has certain limitation when being packaged in a semitransparent or fully transparent way.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a method for packaging a product using liquid metal.
The invention provides a method for packaging a product by using liquid metal, which comprises the following steps: s1, printing a liquid metal prepared in advance on the surface of a product to be packaged through a pattern template to be printed prepared in advance to obtain a liquid metal packaging layer; and S2, preparing a transparent and flexible light covering protective layer on the surface of the liquid metal packaging layer.
Wherein the step S1 further includes: s11, printing a base coating material on the surface of the product to be packaged to obtain a base coating; s12, printing the liquid metal on the surface of the bottom coating through the pattern template to be printed and the printing device, and finely adjusting the thickness of the coating by controlling at least one of the viscosity, solid content, size and model of a spray head, spray printing amplitude, spray flow and spray time of the material to obtain a liquid metal packaging layer; wherein the printing device comprises at least one of a screen printing device, an ultra-micro atomized inkjet printing device, a direct write printing device, and a gravure printing device.
Wherein the step of printing the liquid metal in S1 to obtain the liquid metal packaging layer further comprises: supplying the liquid metal to a spray head of a spray gun; selecting a spray printing mode for spray printing; controlling the thickness, uniformity, glossiness, droplet size, surface roughness and oxidation rate of the liquid metal packaging layer by controlling at least one of the aperture and spray width of a spray head, spraying time, a spraying mode, liquid metal flow, air flow and protective atmosphere, so as to adjust the metallation, reflectivity and brightness of the liquid metal packaging layer; wherein the spray printing comprises common spray coating and ultramicro atomization spray coating; the spray printing mode comprises crescent spray, central point spray, uniform atomization spray and split mode spray; in the spraying printing, the distance between the spray gun and a product to be packaged is 10-20 cm; the spraying time is 2-20 s; the spraying air pressure is 0.1-0.68 MPa.
Wherein the step S2 further includes: uniformly spraying transparent flexible packaging finish paint on the surface of the liquid metal packaging layer to obtain a finishing protective layer; and carrying out curing and drying treatment on the light covering protective layer through an oven and/or a UV (ultraviolet) light curing machine.
Wherein the liquid metal comprises gallium, indium, tin, bismuth, zinc and leadAt least one of gold; the alloy comprises at least one of a binary alloy, a ternary alloy and a quaternary alloy; the binary alloy comprises GaZn5Or GaSn8(ii) a The liquid metal is the liquid metal with a certain proportion of oxides after continuously stirring for 0.5 to 1 hour; the liquid metal comprises liquid metal with different melting points and the temperature of 20-60 ℃.
The product to be packaged is made of at least one of PET, PVC, common white paper, crepe paper, copy paper, honeycomb paper, hard paper, bubble paper, baoli wool, sponge, pearl wool, metal, wood, cloth, acrylic, glass, ceramic, bamboo, natural fibers, chemical fibers and composite materials.
The transparent flexible packaging finish paint comprises a photocuring finish paint and a naturally curing finish paint; the light-cured finish paint comprises at least one of UV epoxy acrylate finish paint, UV polyurethane acrylate finish paint, UV polyether acrylate finish paint, UV polyester acrylate finish paint and UV unsaturated polyester finish paint; the natural curing finish paint comprises at least one of polydimethylsiloxane finish paint polyacrylic finish paint, polyurethane finish paint, alkyd finish paint, nitro finish paint, phenolic aldehyde finish paint and epoxy finish paint.
The template is a relief structure with the thickness of 10-1000 mu m, the thickness of the liquid metal packaging layer is controlled to be 10-500 mu m, and the roughness is 2-10 mu m; the glossiness of the liquid metal packaging layer is 15-100, and the reflectivity of the metal packaging layer is 70% -90%.
The liquid metal is at a temperature higher than room temperature by 5-10 ℃, the thickness of the liquid metal packaging layer is 10-30 mu m, and the glossiness of the liquid metal packaging layer is 100.
Wherein the effect of the liquid metal packaging layer comprises at least one of a trademark pattern, a decorative pattern and a uniform and flat pattern; the packaging color effect of the liquid metal packaging layer comprises silvery white, a metal mirror surface color and a silver white to black gradient transparent color.
According to the method for packaging the product by using the liquid metal, disclosed by the invention, the liquid metal is printed on the surface of the product to be packaged, so that the complex process operation in product packaging is avoided, and the printing method is simple and convenient, has no pollution, and has excellent anti-corrosion and anti-aging effects; the service life can be prolonged through the light-covering protective layer, and the attractiveness of the product is obviously improved; the conductive performance of the liquid metal is utilized, the packaging pattern can be converted into a light-emitting circuit, and the attraction of the product is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for packaging a product with liquid metal according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a packaged product according to a method of packaging a product with a liquid metal according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a pattern structure of a method for packaging a product using liquid metal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a method for packaging a product by using liquid metal according to an embodiment of the present invention, as shown in fig. 1, including: s1, printing a liquid metal prepared in advance on the surface of a product to be packaged through a pattern template to be printed prepared in advance to obtain a liquid metal packaging layer; and S2, preparing a transparent and flexible light covering protective layer on the surface of the liquid metal packaging layer.
The liquid metal (gallium-indium eutectic alloy EGaIn) is a metal material which can flow at normal temperature, has high flexibility, deformability, printability, surface tension, conductivity and nontoxicity, and is widely applied to various industrial fields; the liquid metal has very good fluidity and printability, and the liquid metals with different oxide proportions also have different melting points and adhesions; the above-mentioned characteristics of liquid metal enable the packaging of various types of products with liquid metal.
The pattern template to be printed is a template corresponding to a pattern or trademark logo to be printed on a product; during printing, the selected image, graphic or object is used to block the processed image (wholly or partially) to control the image processing area or process; i.e. the specific image or object used for overlay, is called a mask or stencil.
Wherein, the product to be packaged can be various products, such as bath products, toothpaste, cosmetics, cigarettes, wine, medicines, high-grade foods, greeting cards, invitation cards or calendars.
In step S1, shielding the pattern template to be printed from the product to be packaged according to the requirement of the pattern to be printed; printing liquid metal on the surface of the product to be packaged, wherein the liquid metal forms a liquid metal packaging layer on the surface, and the pattern of the liquid metal packaging layer is the pattern to be printed; it should be noted that the liquid metal layer with metallic luster texture can be sprayed for many times under the condition of protective atmosphere, so as to ensure that the liquid metal packaging layer is not oxidized, and the metallic luster effect reaches the optimal state.
In step S2, after the liquid metal packaging layer obtained in step S1 is completed, a certain protection measure needs to be performed on the liquid metal packaging layer, that is, a light-shielding protective layer is prepared; the light-covering protective layer can isolate the liquid metal from air, prevent the liquid metal from deforming, flowing, oxidizing and the like, and has good protection and brightness increasing effects.
The product packaging is finished based on the two steps; in addition, when the liquid metal packaging box is actually used, a program of any personalized pattern can be set on a computer, so that a complex and exquisite packaging pattern can be conveniently prepared, the liquid metal packaging box is different from a traditional single pattern large-scale packaging method, various personalized customized patterns can be printed on the liquid metal packaging box at will, and the liquid metal packaging box is more flexible and humanized.
Moreover, after the liquid metal is used for packaging the product, the outer-layer packaging pattern can be directly converted into a luminous circuit due to the good electric conductivity of the liquid metal, so that the packaged product has both electric and optical properties, and the functionality of the packaged product is greatly expanded.
According to the method for packaging the product by using the liquid metal, provided by the embodiment of the invention, the liquid metal is printed on the surface of the product to be packaged, so that the complex process operation in product packaging is avoided, and the printing method is simple and convenient, has no pollution, and has excellent anti-corrosion and anti-aging effects; the service life can be prolonged through the light-covering protective layer, and the attractiveness of the product is obviously improved; the conductive performance of the liquid metal is utilized, the packaging pattern can be converted into a light-emitting circuit, and the attraction of the product is increased.
On the basis of any of the above embodiments, the step S1 further includes: s11, printing a base coating material on the surface of the product to be packaged to obtain a base coating; s12, printing the liquid metal on the surface of the bottom coating through the pattern template to be printed and the printing device, and finely adjusting the thickness of the coating by controlling at least one of the viscosity, solid content, size and model of a spray head, spray printing amplitude, spray flow and spray time of the material to obtain a liquid metal packaging layer; wherein the printing device comprises at least one of a screen printing device, an ultra-micro atomized inkjet printing device, a direct write printing device, and a gravure printing device.
The priming coating material and the liquid metal have good viscosity, and the liquid metal packaging layer is favorably attached to the surface of a product to be packaged.
In step S11, since the liquid metal has different adhesion to different materials, and for materials with weak adhesion, the primer may be first sprayed on the surface of the product to obtain a primer; when the base coating material is sprayed, the thickness of the base coating is adjusted by controlling the viscosity, solid content, size and model of a spray head, spray printing amplitude, spraying time and the like of the base coating material; and the priming paint can be uniformly sprayed and printed on the whole surface of the product to be packaged according to the requirement, or the priming paint can be sprayed only on the area where the liquid metal needs to be printed.
In step S12, after the printing of the undercoat layer in step S11 is completed, a liquid metal may be printed on the undercoat layer using a printing apparatus and a pattern template to be printed. Furthermore, various printing devices can be used for printing the liquid metal, such as screen printing devices, inkjet printing devices, direct-write printing devices, gravure printing devices or 3D printing, and can be selected according to the characteristics of the product to be packaged and the specific pattern.
The bottom coating material is printed on the surface of the product to be packaged, so that the liquid metal is better adsorbed on the surface of the product, the service life is prolonged, and the falling-off of the liquid metal is effectively prevented.
On the basis of any of the above embodiments, the step of printing the liquid metal prepared in advance in S1 to obtain the liquid metal packaging layer further includes: supplying the liquid metal to a spray head of a spray gun; selecting a spray printing mode for spray printing; controlling the thickness, uniformity, glossiness, droplet size, surface roughness and oxidation rate of the liquid metal packaging layer by controlling at least one of the aperture and spray width of a spray head, spraying time, a spraying mode, liquid metal flow, air flow and protective atmosphere, so as to adjust the metallation, reflectivity and brightness of the liquid metal packaging layer; wherein the spray printing comprises common spray coating and ultramicro atomization spray coating; the spray printing mode comprises crescent spray, central point spray, uniform atomization spray and split mode spray; in the spraying printing, the distance between the spray gun and a product to be packaged is 10-20 cm; the spraying time is 2-20 s; the air pressure of the spraying is 0.1-0.68 MPa.
Wherein the protective atmosphere is a closed gas environment with an etching resist composition.
Specifically, liquid metal is provided for a spray head, and the liquid metal is directly sprayed and printed on the surfaces of different product packaging materials by an ink-jet film printing method or a screen printing method; the thickness, the particle size and the oxidation rate of the liquid metal layer are controlled by controlling the sizes and the models of different spray heads, different spraying time, protective atmosphere and the like, so that the luster and the brightness of the liquid metal packaging layer are adjusted, and the optimal packaging effect is achieved.
On the basis of any of the above embodiments, the step S2 further includes: uniformly spraying transparent flexible packaging finish paint on the surface of the liquid metal packaging layer to obtain a finishing protective layer; and carrying out curing and drying treatment on the light covering protective layer through an oven and/or a UV (ultraviolet) light curing machine.
The UV curing machine is a device for curing the UV coating by utilizing a UV light source, and the UV curing machine and a photosensitizer in the UV coating perform chemical reaction and instantly dry and cure.
Specifically, after the liquid metal packaging layer is finished, preparing a surface finish protective layer; specifically, transparent flexible finishing paint (packaging finish paint) is used; and adding the finishing paint into a spray gun to uniformly spray the liquid metal layer for the second time, and quickly drying the transparent protective layer by using an oven, a UV (ultraviolet) curing machine and the like after spraying.
On the basis of any one of the above embodiments, the liquid metal includes at least one of gallium, indium, tin, bismuth, zinc, and lead-based alloy; the alloy comprises at least one of a binary alloy, a ternary alloy and a quaternary alloy; the binary alloy comprises GaZn5Or GaSn8(ii) a The liquid metal is the liquid metal with a certain proportion of oxides after continuously stirring for 0.5 to 1 hour; the liquid metal comprises liquid metal with different melting points and the temperature of 20-60 ℃.
Wherein, the liquid metal is continuously stirred for different time lengths, so that the liquid metal with oxides with different proportions can be obtained; and the liquid metal can be slightly stirred for 0.5 to 1 hour for oxidation, and the adhesion of the liquid metal with a small amount of oxidation on materials such as PET, PVC and the like is high.
On the basis of any one of the above embodiments, the material of the product to be packaged includes at least one of PET, PVC, plain white paper, crepe paper, copy paper, honeycomb paper, hard paper, bubble paper, baoli wool, sponge, pearl wool, metal, wood, cloth, acrylic, glass, ceramic, bamboo, natural fiber, chemical fiber, and composite material.
The method provided by the embodiment of the invention can be used for packaging products made of various materials and has wide application.
On the basis of any one of the embodiments, the transparent flexible packaging finish paint comprises a photocuring finish paint and a naturally curing finish paint; the light-cured finish paint comprises at least one of UV epoxy acrylate finish paint, UV polyurethane acrylate finish paint, UV polyether acrylate finish paint, UV polyester acrylate finish paint and UV unsaturated polyester finish paint; the natural curing finish paint comprises at least one of polydimethylsiloxane finish paint polyacrylic finish paint, polyurethane finish paint, alkyd finish paint, nitro finish paint, phenolic aldehyde finish paint and epoxy finish paint.
According to the embodiment of the invention, a proper material can be selected as the transparent flexible packaging finish paint according to actual requirements.
On the basis of any embodiment, the template is a relief structure with the thickness of 10-1000 μm, the thickness of the liquid metal packaging layer is controlled to be 10-500 μm, and the roughness is 2-10 μm; the glossiness of the liquid metal packaging layer is 15-100, and the reflectivity of the metal packaging layer is 70% -90%.
Specifically, the template can be a relief structure, the thickness is about 10-1000 mu m, and the effect is obvious and clear; the template can be acrylic, steel membrane plate or silk screen.
In addition, the thickness of the coating of the liquid metal can be 10-500 mu m, so that large-area ultrathin decorative patterns can be conveniently printed. When spraying, require that the location is accurate, the resolution ratio is higher, the color effect of liquid metal packaging layer includes silvery white, bright metallic quality feel colour etc..
On the basis of any one of the embodiments, the temperature of the liquid metal is 5-10 ℃ higher than the room temperature, the thickness of the liquid metal packaging layer is 10-30 μm, and the glossiness of the liquid metal packaging layer is 100.
On the basis of any one of the above embodiments, the liquid metal packaging layer has at least one of a trademark pattern, a decorative pattern, a gradually-changed transparent texture and a uniform and smooth pattern; the packaging color effect of the liquid metal packaging layer comprises silvery white, metal mirror color and transparent color from silvery white to black.
Specifically, the shape of the liquid metal packaging layer can be a specific pattern, a gradually-changed transparent texture, a large-area uniform and flat pattern, or the like.
To illustrate the above embodiments, the following are given by way of example:
example 1, fig. 2 is a schematic view of a packaged product according to a method for packaging a product using liquid metal according to an example of the present invention, as shown in fig. 2, in which 1 is a spray gun containing liquid metal; 2, packaging patterns, trademarks, bottle caps and integral bottle bodies printed by the liquid metal; 3 is the initial product to be packaged; 4, the liquid metal is used for packaging the logo and the decorative pattern of the product; 5, performing large-area uniform flat packaging by using liquid metal; the method comprises the following specific steps:
step 1, packaging a PET bottle with a smooth surface, taking liquid metal with high purity (99.99%), and preparing a mask plate with different patterns and logo marks;
and 4, finishing packaging the PET liquid metal beverage bottle with the pattern and logo characters.
Example 2, fig. 3 is a schematic cross-sectional view of a pattern structure of a method for packaging a product using liquid metal according to an example of the present invention, as shown in fig. 3, wherein 2 is a product to be packaged; 3, printing a packaging pattern by liquid metal; and 4, transparent and flexible gloss oil for sealing the surface of the package, acrylate UV curing agent and the like. The method comprises the following specific steps:
step 1, preparing liquid metal with higher melting point at room temperature, preparing hard paper business cards, and preparing silk screens with the word patterns and the patterns of the business cards;
and 3, finishing the preparation of the name card packaged by the liquid metal.
Compared with the traditional metal printing, the method for packaging the product by using the liquid metal provided by the embodiment of the invention has the following advantages:
the packaging is directly carried out by using liquid metal ink jet printing or silk screen printing, the printing method is simple and convenient, no pollution is caused, and a series of complicated process flows of high pressure, high temperature and electroplating, such as front gold stamping, vacuum electroplating, magnetron sputtering and the like, are avoided. The metal packaging material can be quickly and simply applied to a large number of product packaging industries, has good metal bright texture, and obviously improves the attractiveness and experience of metal packaging products. The packaged liquid metal pattern layer has higher metal glossiness which is obviously superior to that of the traditional aluminum paste packaging layer;
the liquid metal for packaging has excellent corrosion resistance and aging resistance, after being packaged and packaged by the top paint, the liquid metal is not easy to age after being exposed to the sun for a long time, the weather resistance is high, the service life is long, and the liquid metal packaging coating can be recovered by a series of simple and convenient chemical methods after the product is scrapped, so that the next continuous packaging is facilitated.
The used liquid metal product package can set a program of any personalized pattern on a computer, so that a complex and exquisite package pattern is conveniently prepared, the method is different from the traditional single large-scale packaging method with patterns, the liquid metal package can be randomly printed with various personalized customized patterns, and is more flexible and humanized;
after the liquid metal is used for packaging the product, the outer-layer packaging pattern can be directly converted into a luminous circuit due to the good electric conductivity of the liquid metal, so that the packaged product has both electric and optical properties, and the functionality of the packaged product is greatly expanded.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of packaging a product with a liquid metal, comprising:
s1, printing a liquid metal prepared in advance on the surface of a product to be packaged through a pattern template to be printed prepared in advance to obtain a liquid metal packaging layer;
s2, preparing a transparent and flexible light covering protective layer on the surface of the liquid metal packaging layer;
wherein the step S1 further includes:
s11, printing a base coating material on the surface of the product to be packaged to obtain a base coating for enhancing the adhesive force of the liquid metal on the product to be packaged;
s12, printing the liquid metal on the surface of the bottom coating through the pattern stencil to be printed and a printing device to obtain the liquid metal packaging layer;
the step S2 further includes:
uniformly spraying transparent flexible packaging finish paint on the surface of the liquid metal packaging layer to obtain a finishing protective layer;
curing and drying the light-covering protective layer through an oven and/or a UV (ultraviolet) light curing machine;
the liquid metal includes at least one of gallium, indium, tin, bismuth, zinc, and a lead-based alloy.
2. The method of claim 1, wherein the step of printing a liquid metal prepared in advance in S1 to obtain the liquid metal packaging layer further comprises:
supplying the liquid metal to a spray head of a spray gun;
selecting a spray printing mode for spray printing; controlling the thickness, uniformity, glossiness, droplet size, surface roughness and oxidation rate of the liquid metal packaging layer by controlling at least one of the aperture and spray width of a spray head, spraying time, a spraying mode, liquid metal flow, air flow and protective atmosphere, so as to adjust the metallation, reflectivity and brightness of the liquid metal packaging layer;
wherein the spray printing comprises common spray coating and ultramicro atomization spray coating; the spray printing mode comprises crescent spray, central point spray, uniform atomization spray and split mode spray; in the spraying printing, the distance between the spray gun and a product to be packaged is 10-20 cm; the spraying time is 2-20 s; the spraying air pressure is 0.1-0.68 MPa.
3. The method of claim 1, wherein the alloy comprises at least one of a binary alloy, a ternary alloy, and a quaternary alloy.
4. The method of claim 3, wherein the binary alloy comprises GaZn5Or GaSn8。
5. The method of claim 1, wherein the liquid metal is a liquid metal with a certain proportion of oxides after continuous stirring for 0.5 to 1 hour; the liquid metal comprises 20-60 of different melting pointsoC, a liquid metal.
6. The method as claimed in claim 1, wherein the material of the product to be packaged comprises at least one of PET, PVC, plain white paper, crepe paper, copy paper, honeycomb paper, bubble paper, baoli wool, sponge, pearl wool, metal, wood, cloth, acrylic, glass, ceramic and bamboo.
7. The method of claim 1, wherein the transparent flexible encapsulation topcoat comprises a light-cured topcoat and a naturally-cured topcoat;
the light-cured finish paint comprises at least one of UV epoxy acrylate finish paint, UV polyurethane acrylate finish paint, UV polyether acrylate finish paint, UV polyester acrylate finish paint and UV unsaturated polyester finish paint;
the natural curing finish paint comprises at least one of polydimethylsiloxane finish paint, polyacrylic acid finish paint, polyurethane finish paint, alkyd finish paint, nitro finish paint, phenolic aldehyde finish paint and epoxy finish paint.
8. The method according to claim 1 or 5, wherein the template is a relief structure with a thickness of 10-1000 μm, the liquid metal packaging layer has a thickness controlled between 10-500 μm and a roughness of 2-10 μm; the glossiness of the liquid metal packaging layer is 15-100, and the reflectivity of the metal packaging layer is 70-90%.
9. The method of claim 8, wherein the liquid metal has a temperature 5-10 ℃ higher than room temperatureoAnd C, the thickness of the liquid metal packaging layer is 10-30 mu m, and the glossiness of the liquid metal packaging layer is 100.
10. The method of claim 1, wherein the effect of the liquid metal packaging layer comprises a decorative pattern; the liquid metal packaging layer has a packaging color effect including at least one of silvery white, a metallic mirror color, and a silvery white to black, gradient transparent color.
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| CN105220013A (en) * | 2015-09-17 | 2016-01-06 | 中国科学院理化技术研究所 | A kind of color liquid metal and preparation method thereof |
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| KR100727434B1 (en) * | 2005-03-04 | 2007-06-13 | 주식회사 잉크테크 | Transparent silver inks and their methods for forming thin layers |
| KR101221780B1 (en) * | 2009-08-28 | 2013-01-11 | 주식회사 엘지화학 | Conductive metal ink composition and preparation method for conductive pattern |
| CN103657748B (en) * | 2012-09-25 | 2015-12-09 | 中国科学院理化技术研究所 | Printing-type papery micro-fluid chip and preparation method |
| CN104108248A (en) * | 2013-04-19 | 2014-10-22 | 中国科学院理化技术研究所 | Liquid metal ink-jet printing equipment and printing method |
| CN105611753B (en) * | 2016-02-24 | 2018-05-04 | 北京梦之墨科技有限公司 | A kind of liquid metal multilayer circuit production method and device |
| CN105934105B (en) * | 2016-04-29 | 2020-08-04 | 北京梦之墨科技有限公司 | Method for packaging liquid metal printed circuit by using light-cured resin |
| CN106677455B (en) * | 2016-12-05 | 2019-07-05 | 云南科威液态金属谷研发有限公司 | A kind of Intellective wallpaper based on liquid metal |
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| CN103945951A (en) * | 2011-11-14 | 2014-07-23 | 巴斯夫涂料有限公司 | A liquid metal composition |
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