CN110639780A - Gradient color spraying process - Google Patents
Gradient color spraying process Download PDFInfo
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- CN110639780A CN110639780A CN201911027553.5A CN201911027553A CN110639780A CN 110639780 A CN110639780 A CN 110639780A CN 201911027553 A CN201911027553 A CN 201911027553A CN 110639780 A CN110639780 A CN 110639780A
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
- B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
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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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
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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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/53—Base coat plus clear coat type
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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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- B05D2503/00—Polyurethanes
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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
- B05D2504/00—Epoxy polymers
-
- 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
- B05D2508/00—Polyesters
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a gradient color spraying process. The gradient color spraying process comprises the following steps: providing a substrate, chameleon paint and color-permeable paint, wherein the substrate is provided with a front surface and a back surface which are opposite; the front or the back of substrate is sprayed with chameleon paint and color-permeable paint, and a chameleon paint layer and a color-permeable paint layer are formed in a drying mode, and the color-permeable paint layer and the chameleon paint layer are sequentially arranged along the direction away from the front of the substrate. The technical scheme of the invention can solve the problem that the heterochromic effect of the gradient color is not obvious in the related technology.
Description
Technical Field
The invention relates to the technical field of spraying processes, in particular to a gradient color spraying process.
Background
In the related art, the effect of the gradient color generally realized by the spraying process is usually the lamp effect of gradually changing blue to purple, blue to green, blue to black, green to black, red to blue, or gradually changing various colors from dark to light. However, the colors of the gradations are fixed when viewed from different viewing angles, i.e., the heterochromic effect of the gradations is less obvious.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a gradient color spraying process, and aims to solve the problem that the heterochromic effect of the gradient color is not obvious in the related technology.
In order to achieve the purpose, the gradient color spraying process provided by the invention comprises the following steps:
providing a substrate, chameleon paint and color-permeable paint, wherein the substrate is provided with a front surface and a back surface which are opposite;
the front or the back of substrate is sprayed with chameleon paint and color-permeable paint, and a chameleon paint layer and a color-permeable paint layer are formed in a drying mode, and the color-permeable paint layer and the chameleon paint layer are sequentially arranged along the direction away from the front of the substrate.
Optionally, when the substrate is a transparent substrate, in the step of spraying the chameleon paint and the color-through paint on the front or back surface of the substrate, the method comprises:
spraying color-permeable paint and chameleon paint on the back of the transparent substrate in sequence; alternatively, the first and second electrodes may be,
and spraying chameleon paint and color-permeable paint on the front surface of the transparent substrate in sequence.
Optionally, when the substrate is an opaque substrate, the step of spraying the chameleon paint and the color-through paint on the front or back of the substrate comprises:
and sequentially changing color dragon paint and color permeable paint to the front side of the opaque substrate.
Optionally, in the step of spraying the color-permeable paint and drying to form the color-permeable paint layer, the method comprises the following steps:
the whole surface of the paint is sprayed by adopting color-permeable paint according to parallel spraying paths, and then spraying areas are reduced gradually to form a color-permeable paint layer with gradient thickness, wherein the thickness range of the color-permeable paint sprayed by each spraying path is 3-5 mu m.
Optionally, the color-permeable paint comprises, by weight, 20-40 parts of a first resin, 10-30 parts of a color paste and 40-60 parts of a first solvent, wherein the first resin is an acrylic resin or a polyester resin, the color paste has a particle size of 200nm-300nm, and the first solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; and/or the presence of a gas in the gas,
according to parts by weight, the chameleon paint contains 70-80 parts of second resin, 5-15 parts of chameleon powder and 10-20 parts of second solvent, wherein the second resin is acrylic resin or polyester resin, the particle size range of the chameleon powder is 15-25 mu m, and the second solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons.
Optionally, the chameleon paint layer has a thickness in the range of 6 μm to 8 μm.
Optionally, the gradient color spray coating process further comprises the steps of:
and spraying bright paint on the surface of the chameleon paint layer, which is back to the color-permeable paint layer, and drying to form the bright paint.
Optionally, the gradient color spray coating process further comprises the steps of:
and spraying bright paint on the surface of the chameleon paint layer, which is back to the color-permeable paint layer, and drying to form the bright paint.
Optionally, after the steps of spraying chameleon paint and color-permeable paint on the front surface or the back surface of the substrate and drying to form the chameleon paint layer and the color-permeable paint layer, the method further comprises the following steps:
spraying protective paint, and drying to form a protective paint layer.
Optionally, the protective paint is a matte paint or a varnish, wherein the matte paint contains 70-80 parts by weight of fourth resin, 1-10 parts by weight of toner, 1-10 parts by weight of matte powder and 10-20 parts by weight of fourth solvent, the fourth resin is epoxy resin or polyester resin, the toner and the matte powder both have a particle size range of 5 μm-7 μm, and the fourth solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; the varnish contains 75-85 parts of fifth resin and 15-25 parts of fifth solvent, wherein the fifth resin is polyester resin or acrylic resin, and the fifth solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; and/or the protective paint layer has a thickness in the range of 8 μm to 15 μm.
According to the technical scheme, the color matching and overlapping of the chameleon paint and the color-permeable paint are adopted, the color-changing paint layer and the color-permeable paint layer are formed in a spraying mode, and the color-permeable paint layer and the color-changing paint layer are sequentially arranged in the direction far away from the front surface of the base material, so that a good gradient color effect can be presented when the base material is observed from the front surface of the base material, and the gradient color effect can achieve the effect that the different colors are converted under different observation angles, namely, a relatively full color heterogonic color effect is presented. Meanwhile, the superposition of the chameleon paint and the color-permeable paint can form a new color, and the color is bright and full.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a gradient color spraying process. The gradient color spraying process comprises the following steps:
providing a substrate, chameleon paint and color-permeable paint, wherein the substrate is provided with a front surface and a back surface which are opposite;
the front or the back of substrate is sprayed with chameleon paint and color-permeable paint, and a chameleon paint layer and a color-permeable paint layer are formed in a drying mode, and the color-permeable paint layer and the chameleon paint layer are sequentially arranged along the direction away from the front of the substrate.
The substrate may be a transparent substrate or an opaque substrate, and has a front surface and a back surface opposite to each other, and the front surface is a viewing surface. The spraying sequence of the chameleon paint and the color-permeable paint is determined according to the characteristics and the spraying surface of the base material, if the base material is a transparent base material, the chameleon paint and the color-permeable paint can be sprayed on the same surface of the base material, and when the chameleon paint and the color-permeable paint are sprayed on the front surface of the base material, the color-permeable paint is sprayed firstly, and then the chameleon paint is sprayed; when the two are sprayed on the back of the base material, firstly the chameleon paint is sprayed, and then the transparent paint is sprayed. And after each paint is sprayed, the paint is dried, generally, the paint is put into an oven to be dried for 5 to 40 minutes at 120 to 200 ℃, so that the chameleon paint layer and the permeable paint layer can be respectively obtained. It can be understood that according to the above spraying sequence, the color-permeable paint layer obtained by spraying is close to the front surface of the substrate, that is, close to the observation surface, that is, when observing, the sight line reaches the color-permeable paint layer first and then reaches the color-changing paint layer, so that the conversion between different colors can be realized under different observation angles through the color superposition of the color-permeable paint layer and the color-changing paint layer, that is, a relatively full color heterogonic color-changing effect is realized.
It should be noted that the color of the chameleon paint can be red to gold, gold to silver, blue to red, etc., the color of the permeable paint can be blue, red, yellow or other colors, the superposition of the chameleon paint and the permeable paint can form a new color, for example, the highly permeable blue paint can be matched with the red to gold paint, and the superposed color is purple; the color of the paint is green. The high-transmittance red paint can be matched with gold-to-silver paint, and the superimposed color is orange; the blue-to-red paint is matched, and the superimposed color is purple. The high-transparency butter paint can be matched with red-to-gold paint, and the additive color is orange; the blue-to-red paint is matched, and the superimposed color is green.
Therefore, it can be understood that, according to the technical scheme of the invention, the color matching and superposition of the chameleon paint and the permeable paint are adopted, the chameleon paint layer and the permeable paint layer are formed in a spraying mode, and the permeable paint layer and the chameleon paint layer are sequentially arranged along the direction far away from the front surface of the substrate, so that when the substrate is observed from the front surface of the substrate, a better gradient color effect can be presented, and the gradient color effect can achieve the effect that the different colors are converted under different observation angles, namely, a fuller color heterogonism color effect is presented. Meanwhile, the superposition of the chameleon paint and the color-permeable paint can form a new color, and the color is bright and full.
In an embodiment of the present invention, the substrate is a transparent substrate, and the step of spraying the chameleon paint and the color-permeable paint on the front or back of the substrate includes: and spraying color-permeable paint and chameleon paint on the back of the transparent substrate in sequence.
The transparent substrate can be glass, such as 3D glass of a mobile phone, or a PC plastic plate, and when spraying is carried out, the transparent paint and the chameleon paint are sequentially sprayed on the back surface of the substrate, so that a full color heterogonic color change effect can be displayed by observing from the front surface of the substrate.
In another embodiment of the present invention, the step of spraying the chameleon paint and the color-through paint to the front or back of the substrate comprises: and spraying chameleon paint and color-permeable paint on the front surface of the transparent substrate in sequence.
The color-changing dragon paint is sprayed on the front surface of the transparent base material, the spraying sequence is opposite to that of the back surface of the base material, namely, the color-changing dragon paint is sprayed firstly, and then the transparent paint is sprayed, so that when the front surface of the base material is observed, a fuller color-changing effect can be presented.
In an embodiment of the present invention, the step of spraying the color-permeable paint and drying to form the color-permeable paint layer includes:
the whole surface of the paint is sprayed by adopting color-permeable paint according to parallel spraying paths, and then spraying areas are reduced gradually to form a color-permeable paint layer with gradient thickness, wherein the thickness range of the color-permeable paint sprayed by each spraying path is 3-5 mu m.
The color-permeable paint is sprayed by adopting a multi-layer spraying mode, the spraying area of the color-permeable paint is gradually reduced every time the color-permeable paint is sprayed, generally, the spraying area is reduced by 1/2, 1/3 or 3/4 every time the color-permeable paint is sprayed, so that a color-permeable paint layer with the thickness gradient change can be formed, and the color-permeable paint layer can present the gradual change effect of the color from dark to light. The thickness of the color-permeable paint sprayed on each spraying path is controlled appropriately to ensure that the final gradient effect is good, and the control of the thickness also has an influence on the superposition effect of the final color, for example, the thickness is controlled to be 3 μm, 4 μm or 5 μm.
Optionally, the color-permeable paint comprises, by weight, 20-40 parts of a first resin, 10-30 parts of a color paste and 40-60 parts of a first solvent, wherein the first resin is an acrylic resin or a polyester resin, the particle size of the color paste is 200nm-300nm, and the first solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons.
The color-permeable paint mainly comprises first resin, color paste and a first solvent, wherein the first resin mainly provides adhesion with a base material or adhesion between paint layers and can be acrylic resin or polyester resin; the color paste mainly presents high color transmission color, is generally in a nanometer level, for example, the particle size of the color paste can be 200nm, 250nm or 250nm, and the color paste can be blue color paste, red color paste, yellow color paste or color pastes of other colors, so that high-transmission blue paint, high-transmission red paint, high-transmission yellow paint or high-transmission paint of other colors can be correspondingly obtained; the first solvent is used as a dissolving medium, and is generally a mixed solvent, such as a mixed solvent of esters, ketones, alcohol ethers, alcohols, and aromatic hydrocarbons, wherein the ratio of each component is not limited.
It should be noted that, when preparing the color-permeable paint, the amount of each component is strictly controlled so that the color-permeable paint can exhibit a better high color-permeable effect, for example, 20 parts, 25 parts, 30 parts, 35 parts or 40 parts of the first resin, 10 parts, 15 parts, 20 parts, 25 parts or 30 parts of the color paste, 40 parts, 45 parts, 50 parts, 55 parts or 60 parts of the first solvent are adopted.
Optionally, the chameleon paint comprises, by weight, 70-80 parts of a second resin, 5-15 parts of chameleon powder and 10-20 parts of a second solvent, wherein the second resin is an acrylic resin or a polyester resin, the particle size range of the chameleon powder is 15 μm-25 μm, and the second solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons.
The chameleon paint mainly contains second resin, chameleon powder and a second solvent, wherein the second resin mainly provides adhesion with a base material or adhesion between paint layers and can be acrylic resin or polyester resin; the chameleon powder is used as a pigment, mainly has an isogonic color effect, the particle size of the chameleon powder is generally 15 microns, 20 microns or 25 microns, the second solvent is used as a dissolving medium, and the second solvent is also a mixed solvent, such as a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons, wherein the proportion of the components is not limited.
It should be noted that, when preparing the chameleon paint, the dosage of each component is strictly controlled, so that the chameleon paint has a vivid heterochromic color effect. For example, 70 parts, 75 parts or 80 parts of second resin, 5 parts, 10 parts or 15 parts of chameleon powder and 10 parts, 15 parts or 20 parts of second solvent are adopted.
Optionally, the chameleon paint layer has a thickness in the range of 6 μm to 8 μm. The thickness of the chameleon paint layer directly affects the superposition effect of the final color, that is, the color effect of the chameleon, so the thickness of the chameleon paint layer is strictly controlled, for example, the thickness of the chameleon paint layer is 6 μm, 7 μm or 8 μm.
Further, the gradient color spraying process further comprises the following steps:
and spraying bright paint on the surface of the chameleon paint layer, which is back to the color-permeable paint layer, and drying to form the bright paint.
The sprayed bright paint mainly plays a role in covering and eliminating other interference, so that the finally presented heterochromy color effect is more vivid and full. It can be understood that when the back surface of the transparent substrate is sprayed, the transparent paint is firstly sprayed, the chameleon paint is then sprayed, and the bright paint is then sprayed, so that the final presented heterochromatic color effect is more vivid and full. When the front surface of the opaque substrate is sprayed, the bright paint is firstly sprayed, the chameleon paint is then sprayed, and the transparent paint is then sprayed, so that the final presented heterochromy color effect is more vivid and full.
Optionally, the bright color paint comprises, by weight, 60-70 parts of a third resin, 20-30 parts of a toner and 5-15 parts of a third solvent, wherein the third resin is an acrylic resin or a polyester resin, the toner has a particle size ranging from 5 μm to 7 μm, and the third solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons.
The bright paint mainly comprises a third resin, a toner and a third solvent, wherein the third resin provides adhesion to a substrate or a paint layer and can be acrylic resin or polyester resin, the toner is used as a pigment, and the particle size of the toner is selected to be suitable so as to facilitate dispersion and finally present a good color effect, for example, the particle size of the toner is 5 μm, 6 μm or 7 μm, and the toner can be carbon black toner or toner of other colors. The third solvent is also a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons, wherein the ratio of the components is not limited.
It should be noted that, when preparing the bright paint, the dosage of each component is strictly controlled to present a more bright color effect and play a better role in covering, so that the final presented heterochromic color effect is more bright and full. For example, 60 parts, 65 parts or 70 parts of the third resin, 20 parts, 25 parts or 30 parts of the toner, and 5 parts, 10 parts or 15 parts of the third solvent are used.
Alternatively, the thickness of the bright paint layer may range from 8 μm to 10 μm. The thickness of the bright paint layer affects the covering effect and further affects the final color-changing effect of the chamfers, so the thickness of the bright paint layer is strictly controlled, for example, the thickness of the bright paint layer is 8 μm, 9 μm or 10 μm, so that the final color-changing effect of the chamfers is more vivid and full.
Further, after the steps of spraying chameleon paint and color-permeable paint on the front surface or the back surface of the substrate and drying to form a chameleon paint layer and a color-permeable paint layer, the method further comprises the following steps:
spraying protective paint, and drying to form a protective paint layer.
The protective paint is sprayed on the surface of the substrate to protect the substrate from damage. It should be noted that, when the back surface of the transparent substrate is sprayed, the transparent paint is firstly sprayed, the chameleon paint is then sprayed, the bright paint is then sprayed, and the protective paint is finally sprayed to play a protective role, so that the finally presented heterochromic color effect is more vivid and full, and the color effect can be kept lasting. When the front surface of the opaque substrate is sprayed, firstly, the bright color paint is sprayed, then, the chameleon paint is sprayed, then, the transparent color paint is sprayed, and finally, the protective paint is sprayed, so that the final presented heteroleptic color-changing effect is more vivid and full, and the color effect can be kept lasting. It will be appreciated that here the protective paint is sprayed onto the outermost surface of the substrate.
Generally, the protective paint is a matte paint or a varnish, wherein the matte paint contains 70-80 parts by weight of fourth resin, 1-10 parts by weight of toner, 1-10 parts by weight of matte powder and 10-20 parts by weight of fourth solvent, the fourth resin is epoxy resin or polyester resin, the particle sizes of the toner and the matte powder are both 5-7 mu m, and the fourth solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; the varnish contains 75-85 parts of fifth resin and 15-25 parts of fifth solvent, wherein the fifth resin is polyester resin or acrylic resin, and the fifth solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons.
The matte paint is used as protective paint and is sprayed on the outermost surface of the base material, the matte paint mainly contains fourth resin, toner, matte powder and a fourth solvent, the fourth resin mainly provides adhesion with the paint layer, and polyester resin or acrylic resin can be selected; the toner and the matte powder are pigments, the toner mainly plays a role in covering, the matte powder provides a dyne value, and the particle diameters of the toner and the matte powder are both selected to be suitable, so that the toner is convenient to disperse and the finally presented color effect is good, for example, the particle diameter of the toner is 5 microns, 6 microns or 7 microns, and the particle diameter of the matte powder is 5 microns, 6 microns or 7 microns; the fourth solvent is also a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons, wherein the ratio of the components is not limited.
It should be noted that, when preparing a matte paint, the amount of each component is strictly controlled so as to present a vivid color effect. For example, 70 parts, 75 parts or 80 parts of fourth resin, 1 part, 5 parts or 10 parts of toner, 1 part, 5 parts or 10 parts of matte powder and 10 parts, 15 parts or 20 parts of fourth solvent are adopted.
The varnish is also used as a protective paint and is sprayed on the outermost surface of the substrate to play a role in protection. The varnish mainly comprises a fifth resin and a fifth solvent, wherein the fifth resin is polyester resin or acrylic resin and is 75 parts, 80 parts or 85 parts, and the fifth solvent is also a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons and is 15 parts, 20 parts or 25 parts.
Typically, the protective paint layer has a thickness in the range of 8 μm to 15 μm. The thickness of the protective paint layer affects the final appearance of the metachromatic effect, so the thickness of the protective paint layer is strictly controlled, for example, the thickness of the protective paint layer is 8 μm, 10 μm, 12 μm or 15 μm, so that the final appearance of the metachromatic color effect is more vivid and full.
The spraying process of the gradient of the present invention is described in detail by the following specific examples.
Example 1
The substrate is made of 3D glass of a mobile phone, a back spraying mode is adopted, and the gradient color spraying process comprises the following steps:
(1) and (3) spraying high-blue-permeable paint, firstly carrying out whole-surface spraying, then sequentially reducing the spraying area of 1/2 to carry out 2-layer spraying, wherein the thickness of the paint sprayed each time is 3 mu m, thus forming a deep-to-light high-blue-permeable effect, then putting the paint into an oven to dry for 5min at 150 ℃, and forming a high-blue-permeable paint layer after surface drying. Wherein, the high-transmittance blue paint comprises 40 parts of acrylic resin, 10 parts of blue color paste with the particle size of 200nm and 50 parts of mixed solvent by weight.
(2) Spraying purple red color-to-golden yellow color-changing dragon paint, spraying the whole surface of the purple red color-to-golden yellow color-changing dragon paint on the surface of a high-transparency blue paint layer, wherein the thickness of the sprayed paint is 6 mu m, then putting the sprayed paint into an oven, drying the sprayed paint for 5min at 150 ℃, and forming a color-changing dragon paint layer after surface drying. Wherein the mauve-to-golden color chameleon paint comprises 75 parts by weight of acrylic resin, 10 parts by weight of chameleon powder with the particle size of 15 mu m and 15 parts by weight of mixed solvent.
(3) Spraying brilliant black paint, then spraying the whole brilliant black paint on the surface of the chameleon paint layer, wherein the thickness of the sprayed paint is 5 mu m, then placing the chameleon paint into an oven to dry for 5min at 150 ℃, and forming the brilliant black paint layer after the surface is dried. Wherein the brilliant black paint comprises 75 parts by weight of polyester resin, 10 parts by weight of carbon black toner with the particle size of 5 mu m and 15 parts by weight of mixed solvent.
(4) Spraying matte black paint, and finally spraying the whole surface of the matte black paint on the surface of the bright black paint, wherein the thickness of the sprayed paint is 8 mu m, then drying the paint in an oven at 150 ℃ for 30min, and forming a matte black paint layer after surface drying. Wherein, the matte black paint comprises 75 parts of epoxy resin, 5 parts of carbon black toner with the particle diameter of 5 mu m, 5 parts of matte powder with the particle diameter of 5 mu m and 15 parts of mixed solvent by weight.
After the spraying is finished, the color can be observed to be purple when the front surface is observed at 90 degrees, the color can be observed to be changed from blue to green when the front surface is observed at 45 degrees, and the color can be changed from green to yellow when the side surface is observed at 45 degrees, so that the color jumping effect is formed, and the blue-green color and the purple-yellow color are alternately changed to present a vivid and full heterogonic color changing effect. It should be noted that the green color presented here is a color obtained by superimposing the high-transmittance blue and the chameleon yellow, so that the colors of the color-permeable paint layer and the chameleon paint layer can be superimposed to form a new color.
Example 2
The substrate is a PC plastic plate, a back spraying mode is adopted, and the gradient color spraying process comprises the following steps:
(1) and (3) spraying high-transparency red paint, firstly carrying out whole-surface spraying, then sequentially reducing the spraying area of 1/2 to carry out 2-layer spraying, wherein the thickness of the paint sprayed each time is 4 mu m, thus forming a high-transparency red effect from deep to light, then placing the paint into an oven to dry for 5min at 150 ℃, and forming a high-transparency red paint layer after surface drying. Wherein, the high-transparency red paint comprises 30 parts of polyester resin, 20 parts of red color paste with the particle size of 250nm and 50 parts of mixed solvent by weight.
(2) Spraying yellow-green chameleon paint, spraying the whole surface of the yellow-green chameleon paint on the surface of the high-transmittance red paint layer, wherein the thickness of the sprayed paint is 7 mu m, then putting the paint into an oven, drying the paint for 5min at 150 ℃, and forming the chameleon paint layer after surface drying. Wherein the yellow-green chameleon paint comprises 75 parts of polyester resin, 10 parts of chameleon powder with the particle size of 20 mu m and 15 parts of mixed solvent by weight.
(3) Spraying brilliant black paint, then spraying the whole brilliant black paint on the surface of the chameleon paint layer, wherein the thickness of the sprayed paint is 9 mu m, then placing the chameleon paint into an oven to dry for 5min at 150 ℃, and forming the brilliant black paint layer after the surface is dried. Wherein the brilliant black paint comprises 75 parts by weight of acrylic resin, 10 parts by weight of carbon black toner with the particle size of 6 mu m and 15 parts by weight of mixed solvent.
(4) Spraying matte black paint, and finally spraying the whole surface of the matte black paint on the surface of the bright black paint, wherein the thickness of the sprayed paint is 9 mu m, then drying the paint in an oven at 150 ℃ for 30min, and forming a matte black paint layer after surface drying. Wherein, the matte black paint comprises 75 parts of epoxy resin, 5 parts of carbon black toner with the particle diameter of 6 mu m, 5 parts of matte powder with the particle diameter of 6 mu m and 15 parts of mixed solvent by weight.
After the spraying is finished, the front surface is observed at 90 degrees, the color is observed to be yellow gradually changing, the color is observed to be brown gradually changing to green gradually changing at 45 degrees on the side surface, so that the color jumping effect is formed, the red color and the brown color are alternately changed, and the bright and full heterogonic color changing effect is presented. Similarly, the green color presented here is the color of the high transparent red and the golden color of chameleon, so the colors of the transparent color paint layer and the chameleon paint layer can be superimposed to form a new color.
Example 3
The substrate is a stainless steel vacuum cup, a front spraying mode is adopted, and the gradient color spraying process comprises the following steps:
(1) spraying brilliant black paint, then spraying the whole face of the brilliant black paint on the front face of the base material, wherein the thickness of the sprayed paint is 10 mu m, then placing the base material into an oven to dry for 5min at 150 ℃, and forming a brilliant black paint layer after surface drying. Wherein the brilliant black paint comprises 68 parts by weight of acrylic resin, 22 parts by weight of carbon black toner with the particle size of 7 mu m and 10 parts by weight of mixed solvent.
(2) Spraying red-to-golden chameleon paint, spraying the whole red-to-golden chameleon paint on the surface of the bright black paint layer, wherein the thickness of the sprayed paint is 7 mu m, then putting the paint into an oven, drying the paint for 5min at 150 ℃, and drying the paint to form the chameleon paint layer. Wherein the red-to-golden chameleon paint comprises 75 parts of polyester resin, 10 parts of chameleon powder with the particle size of 25 mu m and 15 parts of mixed solvent by weight.
(3) And (3) spraying high-blue-permeable paint, firstly carrying out whole-surface spraying, then sequentially reducing the spraying area of 1/2 to carry out 2-layer spraying, wherein the thickness of the paint sprayed each time is 4 mu m, thus forming a deep-to-light high-blue-permeable effect, then putting the paint into an oven to dry for 5min at 150 ℃, and forming a high-blue-permeable paint layer after surface drying. Wherein, the high-transparency blue paint comprises 40 parts of polyester resin, 10 parts of red color paste with the particle size of 300nm and 50 parts of mixed solvent by weight.
(4) And spraying varnish, namely spraying the whole varnish on the surface of the high-transmittance blue varnish layer, wherein the thickness of the sprayed varnish is 15 microns, then drying in an oven at 150 ℃ for 30min, and drying to form a varnish layer. Wherein the varnish contains 80 parts by weight of epoxy resin and 20 parts by weight of mixed solvent.
After the spraying is finished, the color can be observed to be purple when the front surface is observed at 90 degrees, the color can be observed to be changed from blue to green when the front surface is observed at 45 degrees, and the color can be changed from green to yellow when the side surface is observed at 45 degrees, so that the color jumping effect is formed, and the blue-green and the purple-yellow are alternately changed to present a vivid and full heterogonic color changing effect. Similarly, the green color presented here is a color superimposed by the high-transmittance blue and the chameleon yellow, so the colors of the color-permeable paint layer and the chameleon paint layer can be superimposed to form a new color.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the present specification and directly/indirectly applied to other related technical fields within the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A gradient color spraying process is characterized by comprising the following steps:
providing a substrate, chameleon paint and color-permeable paint, wherein the substrate is provided with a front surface and a back surface which are opposite;
the front or the back of substrate is sprayed with chameleon paint and color-permeable paint, and a chameleon paint layer and a color-permeable paint layer are formed in a drying mode, and the color-permeable paint layer and the chameleon paint layer are sequentially arranged along the direction away from the front of the substrate.
2. The gradient color spray coating process according to claim 1, wherein when the substrate is a transparent substrate, the step of spraying the chameleon paint and the color-through paint on the front surface or the back surface of the substrate comprises:
spraying color-permeable paint and chameleon paint on the back of the transparent substrate in sequence; alternatively, the first and second electrodes may be,
and spraying chameleon paint and color-permeable paint on the front surface of the transparent substrate in sequence.
3. The gradient color spray process of claim 1, wherein when the substrate is an opaque substrate, the step of spraying the chameleon paint and the color-through paint onto the front or back of the substrate comprises:
and sequentially changing color dragon paint and color permeable paint to the front side of the opaque substrate.
4. The gradient color spray coating process according to any one of claims 1 to 3, wherein in the step of spraying the color-through paint, drying to form a color-through paint layer, comprises:
the whole surface of the paint is sprayed by adopting color-permeable paint according to parallel spraying paths, and then spraying areas are reduced gradually to form a color-permeable paint layer with gradient thickness, wherein the thickness range of the color-permeable paint sprayed by each spraying path is 3-5 mu m.
5. The gradient color spraying process according to any one of claims 1 to 3, wherein the color-permeable paint comprises, by weight, 20 to 40 parts of a first resin, 10 to 30 parts of a color paste and 40 to 60 parts of a first solvent, wherein the first resin is an acrylic resin or a polyester resin, the color paste has a particle size of 200nm to 300nm, and the first solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; and/or the presence of a gas in the gas,
according to parts by weight, the chameleon paint contains 70-80 parts of second resin, 5-15 parts of chameleon powder and 10-20 parts of second solvent, wherein the second resin is acrylic resin or polyester resin, the particle size range of the chameleon powder is 15-25 mu m, and the second solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons.
6. The gradient color spray coating process according to any one of claims 1 to 3, wherein the thickness of the chameleon paint layer is in the range of 6 μm to 8 μm.
7. The gradient color spray process according to any one of claims 1 to 3, further comprising the steps of:
and spraying bright paint on the surface of the chameleon paint layer, which is back to the color-permeable paint layer, and drying to form the bright paint.
8. The gradient color spray coating process according to claim 7, wherein the bright paint comprises 60-70 parts by weight of a third resin, 20-30 parts by weight of a toner and 5-15 parts by weight of a third solvent, wherein the third resin is an acrylic resin or a polyester resin, the toner has a particle size range of 5 μm-7 μm, and the third solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; and/or the presence of a gas in the gas,
the thickness range of the bright paint layer is 8-10 μm.
9. The gradient color spray coating process according to any one of claims 1 to 3, further comprising the steps of, after the steps of spraying the chameleon paint and the clear paint to the front or back surface of the substrate, and drying to form the chameleon paint layer and the clear paint layer:
spraying protective paint, and drying to form a protective paint layer.
10. The gradient color spray coating process according to claim 9, wherein the protective paint is a matte paint or a varnish, wherein the matte paint comprises 70-80 parts by weight of a fourth resin, 1-10 parts by weight of a toner, 1-10 parts by weight of a matte powder and 10-20 parts by weight of a fourth solvent, the fourth resin is an epoxy resin or a polyester resin, the toner and the matte powder both have a particle size range of 5 μm-7 μm, and the fourth solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; the varnish contains 75-85 parts of fifth resin and 15-25 parts of fifth solvent, wherein the fifth resin is polyester resin or acrylic resin, and the fifth solvent is a mixed solvent of esters, ketones, alcohol ethers, alcohols and aromatic hydrocarbons; and/or the presence of a gas in the gas,
the protective paint layer has a thickness in the range of 8 μm to 15 μm.
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| CN112140762A (en) * | 2020-09-25 | 2020-12-29 | 东莞华清光学科技有限公司 | Novel gradient printing process |
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