Printing ink for processing colored glazed glass

Abstract

The invention provides printing ink for processing colored glazed glass, which relates to the technical field of glass processing auxiliary materials and comprises bottom layer printing ink and surface layer printing ink matched with the bottom layer printing ink, the bottom layer ink is prepared from the following raw materials in percentage by mass: 65% of inorganic glass powder, 12% of pigment, 6% of resin binder, 10% of solvent, 1.5% of dispersing agent, 0.5% of flatting agent and 5% of filling agent; the surface layer ink is prepared from the following raw materials in percentage by mass: 51% of inorganic glass powder, 23% of high-temperature isolation filler, 9% of an interface separant, 4.5% of a resin binder, 8.5% of a solvent, 1.5% of a dispersing agent, 0.4% of a flatting agent and 2.1% of a thermal expansion regulator; the melting point of the inorganic glass powder used by the bottom layer ink is lower than that of the inorganic glass powder used by the surface layer ink; and after the bottom layer printing ink is applied to the glass plate surface and cured, the surface layer printing ink is applied. The method has the advantages of simplifying the processing procedure of the colored glazed glass and the like.

Description

Technical Field

[0001] This invention relates to the field of glass processing auxiliary materials technology, and in particular to an ink for processing colored enamel glass. Background Technology

[0002] Colored enamel glass can achieve multiple color combinations through screen printing. Two-tone colored enamel glass can provide buildings with a unique visual aesthetic, meeting the requirements of modern architecture for personalized and artistic decoration. For example, it is often used in curtain walls, partitions, and bathroom spaces, enhancing the sense of spatial layering through color layering.

[0003] Current screen printing process: 1. First step: screen print the first color pattern and then dry it; 2. Second step: Semi-tempered glass; 3. Third step: After silkscreening the second color pattern onto the first layer pattern, dry it; 4. Fourth step: Fully tempered glass; The resulting product appears as the first pattern color when viewed from the outside of the glass enclosure, and as the second pattern color when viewed from the inside of the glass enclosure (for example: the first layer (viewed from the outside) is white, and the second layer (viewed from the inside) is yellow).

[0004] Problems exist: Pattern Overlap and Misalignment: When printing the second layer of pattern, it is impossible to completely overlap with the first layer, resulting in a 2-5mm misalignment (caused by: screen printing machine precision error, screen printing alignment deviation, glass size deviation, etc., all of which can cause the second layer pattern to not completely overlap with the first layer pattern). This is because, in the existing colored enamel glass manufacturing process, the pigments applied in the two layers are the same paint of different colors. The first layer bonds to the glass surface, and the second layer can also bond to the surface of the first layer pattern. This results in two colors on the same glass surface, and the pattern on the two sides of the glass must have different colors. Therefore, the two printed patterns must completely overlap, otherwise it will greatly affect the aesthetics. However, it is impossible to achieve complete alignment of the positioning by clamping and mounting the glass twice, especially for large-sized glass. Therefore, the existing colored enamel glass processing technology has the defects of difficult processing and poor aesthetics.

[0005] In this context, if a certain glaze application ink can selectively adhere to both the glass surface and the glaze surface, the processability of glazed glass can be significantly improved, costs reduced, and the visual effect of the glaze enhanced. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention proposes a two-component ink blend that simplifies the processing steps of colored enamel glass.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an ink for processing colored glaze glass, characterized in that it includes a base layer ink and a top layer ink used in conjunction with the base layer ink; the two are prepared by mixing their respective raw materials.

[0008] The raw material ratio of the base ink, by weight percentage, is: 65% inorganic glass powder, 12% pigment, 6% resin binder, 10% solvent, 1.5% dispersant, 0.5% leveling agent, and 5% filler; The raw material ratio of the topcoat ink, by weight percentage, is as follows: inorganic glass powder 51%, high-temperature isolation filler 23%, interface release agent 9%, resin binder 4.5%, solvent 8.5%, dispersant 1.5%, leveling agent 0.4%, and thermal expansion regulator 2.1%. The inorganic glass powder used in the base layer ink has a lower melting point than the inorganic glass powder used in the top layer ink; after the base layer ink is applied and cured on the glass plate, the top layer ink is then applied.

[0009] Furthermore, the inorganic glass powder in the bottom layer ink is one or more of SiO2, B2O3, ZnO, Na2O, and Li2CO; the inorganic glass powder in the top layer ink is one or more of borosilicate glass powder, phosphate glass powder, and lead-free low-melting-point glass powder (SiO2-B2O3-ZnO-Na2O system).

[0010] Furthermore, the pigment in the base ink is one or more of copper chromium black, manganese iron black, chromium oxide, and cobalt oxide.

[0011] Furthermore, the resin binders in both the base layer ink and the top layer ink are one or more of polyvinyl butyral (PVB), ethyl cellulose, and alkyd resin.

[0012] Furthermore, the interface isolator in the topcoat ink is a composition of zinc stearate and microcrystalline wax in a mass ratio of 7:3.

[0013] Furthermore, the solvent in the bottom layer ink is terpineol or water; the solvent in the top layer ink is one of terpineol, ethanol, propylene glycol methyl ether acetate (PMA), or diethylene glycol butyl ether.

[0014] Furthermore, the dispersant in the bottom layer ink is one or a combination of diethylene glycol butyl ether, fatty alcohol polyether amide, methyl benzoate, and butyl benzoate; the dispersant in the top layer ink is one or a combination of polyamide wax paste and dodecyltrimethylammonium chloride.

[0015] Furthermore, the leveling agent in the bottom layer ink is one or more of the following: alkyl-polyether co-modified siloxane copolymer, polysiloxane-polyether copolymer, and modified polysiloxane solution; the leveling agent in the top layer ink is one or more of the following: fluorocarbon modified leveling agent, organosilicon leveling agent, and polyether modified polysiloxane.

[0016] Furthermore, the filler in the bottom ink is one or more of alumina, zircon powder, and quartz powder, or a mixture thereof.

[0017] Furthermore, the topcoat ink contains one or a mixture of hexagonal boron nitride (h-BN), a thermal expansion regulator, and talc.

[0018] Furthermore, the high-temperature isolation filler in the surface layer ink is one or a mixture of α-alumina (α-Al2O3), zircon powder (ZrSiO4), and quartz powder (SiO2).

[0019] The ink obtained by this solution can maintain strong adhesion between the bottom layer ink and the glass, strong adhesion between the bottom layer ink and the top layer ink, and weak adhesion between the top layer ink and the glass surface during the glass tempering process, which facilitates the processing of colored glaze glass. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] First step: Apply the first layer of colored glaze pattern using screen printing technology, followed by drying. 1. Base layer ink formulation (Formula 1): (1) Inorganic glass powder: 65% Low melting point glass powder (such as SiO2, B2O3, ZnO, Na2O, Li2CO), including one or more of them, as the core filler, melts into film at high temperature and combines with other components.

[0022] (2) Pigment / Pigment: Percentage: 12% Provide color that is heat resistant (such as copper chromium black, manganese iron black, chromium oxide, cobalt oxide), including one or more of them; (3) Resin binder: 6% (such as ethyl cellulose, alkyd resin), containing one or more of them, responsible for dispersing pigments and forming the matrix. (4) Solvent: 10% (such as terpineol, water), containing one or more of them, used to adjust viscosity; (5) Dispersant: 1.5% (e.g., diethylene glycol butyl ether, fatty alcohol polyether amide, methyl benzoate, butyl benzoate) containing one or more of these to promote uniform dispersion of pigments and fillers, prevent sedimentation and clumping, and ensure the stability of ink color and performance; (6) Leveling agent: 0.5% (e.g., alkyl and polyether co-modified siloxane copolymer, polysiloxane-polyether copolymer, modified polysiloxane solution) contains one or more of these to improve the leveling properties of the ink coating, reduce surface defects such as orange peel and pinholes, and obtain a smooth film.

[0023] (7) Filler: 5% (e.g., alumina, zircon powder (ZrSiO4), quartz powder (SiO2)) containing one or more of these to adjust the concentration and improve wear resistance.

[0024] Second step: Cover the surface of the first layer of colored glaze with a full-size second layer of colored glaze, and after drying, perform full tempering treatment; 1. Topcoat ink formulation (Formula 2): (1) Medium melting point glass powder: accounting for 51% (e.g., borosilicate glass powder, phosphate glass powder, lead-free low melting point glass powder (SiO2-B2O3-ZnO-Na2O system) including one or more of them.

[0025] Function: Borosilicate glass powder is the core base material. This is to improve the interfacial reactivity with Formula 1.

[0026] (2) High temperature isolation filler: accounting for 23%, including one or more of them, such as α-alumina (α-Al2O3), zircon powder (ZrSiO4), and quartz powder (SiO2).

[0027] Function: Its melting point reaches 2050℃, which can effectively prevent bonding with glass substrate.

[0028] (3) Interface isolation agent: 9% (e.g., zinc stearate and microcrystalline wax 7:3).

[0029] Function: Zinc stearate effectively decomposes and carbonizes during heating, forming a protective film. When used in conjunction with microcrystalline wax, it helps form a more complete and continuous protective layer on the glass contact surface of Formula 2, preventing any form of bonding.

[0030] (4) Resin: 4.5% (e.g., polyvinyl butyral (PVB), ethyl cellulose, alkyd resin) containing one or more of these.

[0031] Functions: PVB has good film-forming properties, and ethyl cellulose and alkyd resin are commonly used resin binders in glass inks, which can provide good printable film-forming properties.

[0032] (5) Solvent: 8.5% (such as terpineol, ethanol, propylene glycol methyl ether acetate (PMA), diethylene glycol butyl ether) containing one or more of these.

[0033] Function: Used to adjust viscosity (6) Dispersant: 1.5% (such as polyamide wax paste, dodecyltrimethylammonium chloride) contains one or more of them.

[0034] Functions: Polyamide wax paste effectively prevents the sedimentation of high-proportion solid fillers (such as alumina) and provides good suspension. Dodecyltrimethylammonium chloride, as a small molecule dispersant, can also assist in the uniform dispersion of powders.

[0035] (7) Leveling agent: 0.4% (such as fluorocarbon modified leveling agent, organosilicon leveling agent, polyether modified polysiloxane) containing one or more of them.

[0036] Function: Reduces surface tension, improves print smoothness, and prevents pinholes.

[0037] (8) Thermal expansion regulator: 2.1% (such as hexagonal boron nitride (h-BN), talc) containing one or more of them.

[0038] Function: Its coefficient of thermal expansion differs greatly from that of glass, and it also has lubricating properties, which can significantly promote the automatic peeling of the coating after cooling.

[0039] (1) Use glass powder similar to Formula 1 but with a slightly higher melting point to ensure that the two can fuse at the interface at 680-720℃; (2) Add a large amount of high melting point isolation filler to prevent the bonding of formulation 2 with the glass substrate; (3) A high-temperature decomposition isolation layer is formed at the interface between Formulation 2 and the glass through an organic isolating agent. Third step: The second layer of full-color glaze and the residue on the glass substrate surface are removed by the cleaning machine, and the final result is a two-color pattern glaze effect. When viewed from the glass surface, it appears as champagne gold, and when viewed from the glaze surface, it appears as pure black. After color treatment, there is only a color difference. However, it can be clearly seen that when the glass is viewed from the back of the coated surface, there is a three-dimensional effect, while when the glass is viewed from the coated surface, there is no ghosting. IV. Tempering process, coating changes during the tempering process of Formula 1 and Formula 2 Step 1: Printing and Drying 1. First, print the pattern from Formula 1 and dry it: this forms the basis for a permanent decorative layer; 2. Print Formula 2 on the dried Formula 1 pattern in its entirety; (1) Where the patterns of Formula 2 and Formula 1 overlap: in close contact; (2) At the point of direct contact between Formula 2 and the glass substrate: an isolation interface is formed; Step 2: Changes inside the tempering furnace (680-720℃) 1. In the pattern area of ​​Recipe 1: (1) The low melting point glass powder of Formula 1 melts first (starting at about 620°C); (2) The medium melting point glass powder of Formula 2 then softens and melts (starting at about 670°C); (3) The two diffuse and fuse at the interface to form a strong chemical bond; (4) The alumina particles in Formula 2 are encapsulated by the molten glass phase, but this does not prevent the bonding between Formula 1 and Formula 2 at the interface; 2. In the area where Formulation 2 directly contacts the glass substrate: (1) Low temperature stage (200-400℃): ① Zinc stearate and microcrystalline wax melt → decompose → carbonize; ② A continuous carbonaceous barrier film is formed between Formulation 2 and the glass substrate; (2) Medium temperature stage (400-600℃): ① The organic carrier completely decomposes and volatilizes; ②The carbonaceous insulating film remains stable, preventing direct contact between Formula 2 and the glass; 3. High-temperature stage (680-720℃): ①Formula 2 glass powder melts, but is blocked by carbon film and alumina particles, and cannot bond with the glass substrate; ② Micro-stress is generated between alumina particles and boron nitride due to the difference in their coefficients of thermal expansion; ③Formula 2 forms a porous and loose sintered body, but there is a clear isolation layer between it and the glass; Step 3: Cooling and Post-processing ① At the junction of Formula 1 and Formula 2: they shrink synchronously and bond firmly; ② At the contact point between Formula 2 and glass: Due to the severe mismatch in thermal expansion coefficients, huge stress is generated, and the carbonaceous isolation layer further weakens the interfacial bonding force; Step 4: Water washing to remove: (1) The part of Formula 2 that comes into contact with the glass does not have a substantial bond, but only relies on weak physical adsorption. (2) The loose coating of Formula 2 is easily washed away by water flow. (3) The pattern of Formula 1 is well preserved, and the overlapping part with Formula 2 forms a special three-dimensional decorative effect when viewed from the back; This ink not only simplifies the process and reduces energy consumption, but also has zero VOC emissions (volatile organic compounds), aligning with the trend of green manufacturing. All component parameters mentioned above are in units of mass percentage or mass proportion.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An ink for processing colored enamel glass, characterized in that, This includes the base layer ink obtained by mixing raw materials and the top layer ink used in conjunction with the base layer ink; The raw material ratio of the base ink, by weight percentage, is: 65% inorganic glass powder, 12% pigment, 6% resin binder, 10% solvent, 1.5% dispersant, 0.5% leveling agent, and 5% filler; The raw material ratio of the topcoat ink, by weight percentage, is as follows: inorganic glass powder 51%, high-temperature isolation filler 23%, interface release agent 9%, resin binder 4.5%, solvent 8.5%, dispersant 1.5%, leveling agent 0.4%, and thermal expansion regulator 2.1%. The inorganic glass powder used in the base layer ink has a lower melting point than the inorganic glass powder used in the top layer ink; after the base layer ink is applied and cured on the glass plate, the top layer ink is then applied.

2. The ink for processing colored enamel glass according to claim 1, characterized in that, The inorganic glass powder in the bottom layer ink is one or more of SiO2, B2O3, ZnO, Na2O, and Li2CO; the inorganic glass powder in the top layer ink is one or more of borosilicate glass powder, phosphate glass powder, and lead-free low-melting-point glass powder (SiO2-B2O3-ZnO-Na2O system).

3. The ink for processing colored enamel glass according to claim 2, characterized in that, The pigments in the base ink are one or more of copper chromium black, manganese iron black, chromium oxide, and cobalt oxide.

4. The ink for processing colored enamel glass according to claim 2, characterized in that, The resin binders in both the base layer ink and the top layer ink are one or more of polyvinyl butyral (PVB), ethyl cellulose, and alkyd resin.

5. The ink for processing colored enamel glass according to claim 2, characterized in that, The interface isolator in the topcoat ink is a combination of zinc stearate and microcrystalline wax in a mass ratio of 7:

3.

6. The ink for processing colored enamel glass according to claim 2, characterized in that, The dispersant in the base layer ink is one or a combination of diethylene glycol butyl ether, fatty alcohol polyether amide, methyl benzoate, and butyl benzoate; the dispersant in the top layer ink is one or a combination of polyamide wax paste and dodecyltrimethylammonium chloride.

7. The ink for processing colored enamel glass according to claim 2, characterized in that, The leveling agent in the base layer ink is one or more of the following: alkyl-polyether co-modified siloxane copolymer, polysiloxane-polyether copolymer, and modified polysiloxane solution; the leveling agent in the top layer ink is one or more of the following: fluorocarbon modified leveling agent, organosilicon leveling agent, and polyether modified polysiloxane.

8. The ink for processing colored enamel glass according to claim 2, characterized in that, The filler in the bottom ink is one or more of alumina, zircon powder, and quartz powder, or a mixture thereof.

9. The ink for processing colored enamel glass according to claim 2, characterized in that, The topcoat ink contains one or a mixture of hexagonal boron nitride (h-BN), a thermal expansion regulator, and talc.

10. The ink for processing colored enamel glass according to claim 2, characterized in that, The high-temperature isolation filler in the topcoat ink is one or a mixture of α-alumina (α-Al2O3), zircon powder (ZrSiO4), and quartz powder (SiO2).