Double-silver low-emissivity coated glass with medium transparency and medium ash
By optimizing the film structure and material ratio of double-silver low-emissivity coated glass, the problem of inconsistent color between the film surface and the glass surface was solved, achieving a natural light gray effect and improving product performance and market adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINYI GLASS (TIANJIN) CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-08
AI Technical Summary
Existing double-silver low-emissivity coated glass products have problems with color consistency, especially in achieving color consistency between the coating surface and the glass surface, and there are few light gray products with medium transparency and medium gray color on the market.
By optimizing the film structure and thickness design, including the combination of a base dielectric layer, a functional silver layer, a barrier layer, and a dielectric protective layer, and by using specific materials and thickness ratios, such as non-metallic nitrides, metal oxides, and nickel-chromium alloys, a consistent light gray effect is achieved.
It achieves good color consistency between the membrane surface and the glass surface, with a natural light gray color. Its performance is improved, making it suitable for both residential and commercial buildings. It fills a market gap and enhances the product's diversification and practicality.
Smart Images
Figure CN224212589U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coated glass technology, and in particular to a medium-transparency, medium-gray double-silver low-emissivity coated glass. Background Technology
[0002] Low-emissivity (Low-E) glass is a product made by coating a glass surface with multiple layers of metal or other compounds, including a silver layer. Due to the low emissivity of the silver layer, LOW glass has high transmittance for visible light and high reflectivity for infrared radiation, resulting in excellent heat insulation performance. Double-silver LOW glass adds a silver film layer to ordinary single-silver LOW glass. Compared to single-silver LOW glass, double-silver LOW glass maintains high transmittance for visible light while having even higher reflectivity for infrared radiation, providing even stronger heat insulation performance.
[0003] The film structure of double-silver low-emissivity coated glass produced by vacuum magnetron sputtering is generally as follows: glass / base dielectric layer / first functional silver layer / first barrier layer / intermediate dielectric layer / second functional silver layer / second barrier layer / top dielectric layer, etc. The dielectric layer is generally a metal oxide or metal nitride, or a non-metal oxide or non-metal nitride, such as SiZrOx, TiO2, ZnSnOx, SnO2, ZnO, SiO2, Ta2O5, SiNxOy, BiO2, Al2O3, Nb2O5, Si3N4, AZO, etc. The first and second barrier layers are generally metals or metal oxides (nitrides), or alloys or alloy oxides (nitrides), such as Ti, NiCr, or NiCrOx, NiCrNx, etc.
[0004] However, in the development and production of traditional double-silver low-emissivity films, the common products are mostly blue-gray, silver-blue, gold, green, red, and purple. High-performance double-silver products in a light gray, naturally translucent, medium-gray color are rare, and the color of the glass surface and the film surface of most products differ significantly, making it difficult to achieve consistency between the two sides. For example, patent CN218710007U discloses a temperable purple double-silver low-emissivity coated glass, comprising a glass substrate. On one side of the glass substrate, from the inside out, are sequentially arranged a base dielectric layer, a base second dielectric layer, a first functional silver layer, a first barrier layer, an intermediate dielectric layer, a second barrier layer, a second functional silver layer, a third barrier layer, an upper dielectric layer, an upper second dielectric layer, and an outer protective layer. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a medium-transparency, medium-gray double-silver low-emissivity coated glass to achieve good color consistency between the coating surface and the glass surface.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] This medium-transparency, medium-gray double-silver low-emissivity coated glass includes a glass substrate. On one side of the glass substrate, from the inside out, are sequentially disposed a base dielectric layer, a base second dielectric layer, a first functional silver layer, a first barrier layer, a first dielectric protective layer, an intermediate dielectric layer, an intermediate third dielectric layer, a second functional silver layer, a second barrier layer, an upper dielectric layer, an upper second dielectric layer, and an outer protective layer. The thickness of the base dielectric layer is 30-35 nm; the thickness of the base second dielectric layer is 10-12 nm; the thickness of the base second dielectric layer... The thickness of the first layer is 10-12 nm; the thickness of the intermediate third dielectric layer is 8-10 nm; the thickness of the upper second dielectric layer is 45-50 nm; the thickness of the outer protective layer is 1-5 nm; the thickness of the first functional silver layer is 7-8 nm; the thickness of the second functional silver layer is 14-16 nm; the single-layer thickness of the first barrier layer is 1-2 nm; the single-layer thickness of the second barrier layer is 1-2 nm; the thickness of the first dielectric protective layer is 6-8 nm; and the thickness of the upper dielectric layer is 5-7 nm.
[0008] Further or preferred:
[0009] The base dielectric layer is a film composed of non-metallic nitrides.
[0010] The second dielectric layer of the base layer is a film layer composed of metal oxides.
[0011] The first dielectric protective layer is a film layer composed of metal oxides.
[0012] The intermediate dielectric layer is a film made of metal oxide.
[0013] The intermediate third dielectric layer is a film layer composed of metal oxides.
[0014] The upper dielectric protective layer is a film layer composed of metal oxides.
[0015] The upper dielectric layer is a film layer composed of metal oxides.
[0016] The upper second dielectric layer is a film composed of non-metallic nitrides.
[0017] The outer protective layer is a film layer composed of non-metallic oxides, and the first barrier layer and the second barrier layer are both film layers composed of one of the following materials: nickel-chromium, nickel-chromium oxide, or nickel-chromium nitride.
[0018] Compared with the prior art, this utility model has the following advantages:
[0019] This medium-transparency, medium-gray double-silver low-emissivity coated glass has a reasonable design, good color consistency between the coating and the glass surface, and a light gray tone. Its performance is improved (emissivity between 0.025 and 0.035), and it can be widely used in civil and commercial buildings. Attached Figure Description
[0020] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:
[0021] Figure 1 This is a schematic diagram of the double-silver low-emissivity coated glass structure of this utility model.
[0022] Figure 2 This is a flowchart illustrating the production process of the double-silver low-emissivity coated glass of this utility model.
[0023] In the picture:
[0024] 1. Glass substrate; 2. Base dielectric layer; 3. Base second dielectric layer; 4. First functional silver layer; 5. First barrier layer; 6. First dielectric protective layer; 7. Intermediate dielectric layer; 8. Intermediate third dielectric layer; 9. Second functional silver layer; 10. Second barrier layer; 11. Top dielectric layer; 12. Top second dielectric layer; 13. Outer protective layer. Detailed Implementation
[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.
[0026] like Figure 1 and Figure 2 As shown, this medium-transparency, medium-gray double-silver low-emissivity coated glass includes a glass substrate. On one side of the glass substrate, from the inside out, are sequentially arranged a base dielectric layer, a base second dielectric layer, a first functional silver layer, a first barrier layer, a first dielectric protective layer, an intermediate dielectric layer, an intermediate third dielectric layer, a second functional silver layer, a second barrier layer, an upper dielectric layer, an upper second dielectric layer, and an outer protective layer. The medium-transparency, medium-gray light-gray double-silver low-emissivity coated glass provided by this invention achieves a natural light-gray appearance. Both the film surface color and the reflected color conform to the light-gray color, resulting in good color consistency between the film surface and the glass surface. Its color is natural, and the color range can be flexibly adjusted. This invention can obtain multiple varieties of near-light-gray double-silver low-emissivity coated glass with different shading coefficients and emissivity by changing the thickness of each film layer, filling the gap in the double-silver market for medium-transparency, medium-gray light-gray products to meet different market demands.
[0027] Furthermore, the thickness of the base dielectric layer is 30-35 nm; the thickness of the base second dielectric layer is 10-12 nm; the thickness of the base second dielectric layer is 10-12 nm; the thickness of the intermediate third dielectric layer is 8-10 nm; the thickness of the upper second dielectric layer is 45-50 nm; the thickness of the outer protective layer is 1-5 nm; the thickness of the first functional silver layer is 7-8 nm; the thickness of the second functional silver layer is 14-16 nm; the single-layer thickness of the first barrier layer is 1-2 nm; the single-layer thickness of the second barrier layer is 1-2 nm; the thickness of the first dielectric protective layer is 6-8 nm; and the thickness of the upper dielectric layer is 5-7 nm.
[0028] The base dielectric layer is a non-metallic nitride film. The base second dielectric layer is a metal oxide film. The first dielectric protective layer is a metal oxide film. The intermediate dielectric layer is a metal oxide film. The intermediate third dielectric layer is a metal oxide film. The upper dielectric protective layer is a metal oxide film. The upper dielectric layer is a metal oxide film. The upper second dielectric layer is a non-metallic nitride film. The outer protective layer is a non-metallic oxide film. The first and second barrier layers are both made of one of the following materials: nickel-chromium, nickel-chromium oxide, or nickel-chromium nitride.
[0029] The medium-transmittance, medium-gray, light gray double-silver low-emissivity coated glass provided by this utility model has low emissivity (between 0.025 and 0.035), light gray glass surface color (a value 0.2, b value 0.4, transmittance 56), and is very practical in both performance and appearance, and can be promoted to civil buildings.
[0030] In the ongoing process of exploring the boundaries of innovation in the architectural glass industry, this utility model has made a strong entry into the market with its ingeniously designed and high-performance medium-transparency, medium-gray double-silver low-emissivity coated glass, opening up a new path for material applications in the construction field and reshaping the industry's aesthetic and practical standards.
[0031] This glass uses a high-quality glass substrate as its core support, on one side of which a sophisticated yet highly coordinated film structure is meticulously crafted. From the inside out, the layers are arranged sequentially, working together as tightly as components in a precision instrument. The thickness of the base dielectric layer is precisely locked within the golden range of 30-35nm. As the starting key layer of the entire film system, it not only achieves atomic-level tight adhesion with the glass substrate, ensuring the film remains stable during long-term use, but also cleverly undertakes the crucial task of buffering the internal stress of the entire low-emissivity film, laying a rock-solid foundation for the stable and efficient functioning of subsequent layers. Subsequently, the second dielectric layer closely connects, forming a solid link with the base dielectric layer, further strengthening the adhesion to the glass substrate and assisting in adjusting light transmittance characteristics.
[0032] I. The Color Aesthetics of Nature
[0033] 1. The Charm of Light Gray, Naturally Perfect: Its appearance is a meticulously blended, extremely natural light gray. This light gray is far from the ordinary, monotonous gray; rather, it contains rich optical and aesthetic mysteries. It cleverly blends just the right amount of gray with a delicate and soft texture, like a tranquil scene shrouded in morning mist, or a classic charm refined by time. Whether observed directly from the membrane surface or captured through reflected light, the light gray it displays is highly unified and harmonious, giving a visually stunning impression of understated luxury and calm restraint. When applied to modern minimalist commercial buildings, it perfectly interprets the building's simplicity, grandeur, and high-end quality; integrated into warm and elegant residential communities, it creates a peaceful, harmonious, and comfortable living atmosphere. With its unique light gray tone, it blends naturally with the surrounding environment, becoming the finishing touch to architectural aesthetics.
[0034] 2. Color Cube, Changing at Will: A major revolutionary breakthrough of this invention lies in its extraordinary ability to control color. By precisely adjusting the thickness of each film layer at the atomic level, it's as if possessing a universal key to unlock the treasure trove of color. Within the framework of light gray as the main color, it can easily switch freely between a light gray as elegant and ethereal as morning mist, and a medium-light gray with stronger visual tension and richer layers. This feature gives architects unprecedented creative freedom, allowing them to tailor unique color schemes like an artist sculpting a work of art, based on the unique positioning, style requirements, and specific characteristics of the surrounding environment of different architectural projects, fully satisfying the strong desire of the contemporary architectural industry for diversified aesthetic expression.
[0035] II. Diverse and Superior Practical Performance
[0036] 1. Intelligent Temperature Control, Energy-Saving Pioneer: Through ingenious design of the thickness of each film layer, especially the precise control of the two functional silver layers, this glass successfully creates an intelligent thermal insulation system. In the sweltering summer, when the blazing sun shines without restraint, the high shading coefficient acts like a sturdy shield, effectively blocking over 80% of solar radiation heat, significantly reducing the cooling load on indoor air conditioning systems, creating a cool and comfortable environment while significantly reducing energy consumption. In the cold winter, its low emissivity acts as a guardian of warmth, firmly locking in indoor heat and reducing heat loss to the outside, lowering heating costs. It truly achieves a perfect balance between energy saving and comfort, providing an ideal energy-saving solution for buildings in different climate zones.
[0037] 2. Rock-solid and durable: The ingenious design of multiple protective layers endows this glass with exceptional durability. The upper dielectric layer acts as a loyal antioxidant guardian, effectively resisting damage from harsh external environments with its strong resistance to UV rays and acid rain, ensuring that the film's performance remains stable over a long period. The upper second dielectric layer gives the product excellent flexibility and superior impact resistance, allowing it to effectively disperse impact force like a resilient yet tough armor when facing external impacts, preventing the glass from easily breaking. The outermost protective layer, with its ultra-high hardness, provides top-notch scratch and abrasion resistance. Even after long-term exposure to wind, sun, and daily friction, the glass surface remains as smooth as new, greatly extending the product's lifespan, significantly reducing building maintenance costs, and providing long-term stable performance assurance for building projects.
[0038] III. Filling market gaps and leading industry innovation
[0039] In today's fiercely competitive market for double-silver low-emissivity coated glass, product colors have long been dominated by traditional color schemes such as blue-gray, silver-blue, gold, green, red, and purple. Light gray double-silver products with a medium transparency and gray tint have been virtually nonexistent and scarce. The emergence of this utility model is like a dazzling shooting star streaking across the sky, successfully filling this long-standing market gap and injecting new vitality into the product matrix of double-silver low-emissivity coated glass. This innovative achievement not only provides the construction industry with unprecedented material choices, meeting the market's urgent demand for personalized, high-quality architectural glass, but also opens up a new blue ocean market for glass manufacturers, stimulating the industry's innovative vitality and propelling the entire architectural glass industry towards a more diversified and innovative direction, leading the industry into a new era of development.
[0040] The preferred specific example of this utility model is as follows:
[0041] The present invention provides a light blue double-silver low-emissivity coated glass with yellow-green dual-tone, comprising a glass substrate 1; a base dielectric layer 2; a base second dielectric layer 3; a first functional silver layer 4; a first barrier layer 5; a first dielectric protective layer 6; an intermediate dielectric layer 7; an intermediate third dielectric layer 8; a second functional silver layer 9; a second barrier layer 10; an upper dielectric layer 11; an upper second dielectric layer 12; and an outer protective layer 13.
[0042] The base dielectric layer 2 has a thickness of 30-35 nm. It is composed of non-metallic nitrides or oxides, such as SiO2, SiNxOy, and Si3N4. The second base dielectric layer 3 is composed of metal oxides, such as ZnSnOx, SnO2, ZnO, and Al2O3. The thickness of the second base dielectric layer 3 is 10-12 nm. The first dielectric protective layer 6 is composed of metal oxides, such as AZO, ZnO, and Al2O3. The thickness of the second base dielectric layer 6 is 6-8 nm. The intermediate dielectric layer 7 is composed of metal oxides, such as ZnSnOx, SnO2, ZnO, and Al2O3. The thickness of the intermediate dielectric layer 7 is 45-55 nm. The intermediate third dielectric layer 8 is composed of metal oxides, such as ZnSnOx, SnO2, ZnO, and Al2O3. The thickness of the intermediate dielectric layer 8 is 8-10 nm. The upper dielectric layer 11 is composed of metal oxides, such as AZO, ZnO, Al2O3, etc. The thickness of the upper dielectric layer 11 is 5-7 nm.
[0043] The upper dielectric layer 12 is composed of non-metallic nitrides or non-metallic oxides, such as SiO2, Ta2O5, SiNxOy, Si3N4, etc. The thickness of the upper second dielectric layer 12 is 45-50 nm. The outer protective layer 13 is composed of non-metallic oxides or non-metallic oxides, such as TiO2, BiO2, Nb2O5, ZrO, ZrSiAl, etc. The thickness of the outer protective layer 13 is 1-5 nm.
[0044] The thickness of the first silver film layer 4 is 7–8 nm. The thickness of the second silver film layer 9 is 14–16 nm. The material of the first barrier layer 5 is one of nickel-chromium, nickel-chromium oxide, or nickel-chromium nitride, and the thickness of a single layer of the first barrier layer 5 is 1–2 nm. The material of the second barrier layer 10 is one of nickel-chromium, nickel-chromium oxide, or nickel-chromium nitride, and the thickness of a single layer of the second barrier layer 10 is 1–2 nm.
[0045] In practical applications, the commonly used light gray double-silver low-emissivity coated glass with medium transparency and medium gray color has the following film structure and thickness: the base dielectric layer 2 is 40-50nm, the first barrier layer 3 is 1.5-2.5m, the base second dielectric layer 4 is 5-10nm, the first silver film layer 5 is 3.5-4.5nm, the second barrier layer 6 is 1.5-2.5m, the intermediate dielectric layer 7 is 40-50nm, the second silver film layer 8 is 16.5-17.5nm, the third barrier layer 9 is 1.5-2.5nm, the upper dielectric layer 10 is 5-10nm, the upper second dielectric layer 11 is 35-45nm, and the outer protective layer 12 is 1-5nm.
[0046] The following is an application example of the membrane structure of the medium-transparency, medium-gray, light gray double-silver low-emissivity coated glass provided by this utility model:
[0047] Glass substrate, Si3N4 layer, ZnO layer, NiCr layer, silver film layer, AZO layer, SnZnO2 layer, ZnO layer, silver film layer, NiCr layer, AZO, Si3N4 layer and zirconium nitride (ZrSiNx) layer.
[0048] The primary material of the base dielectric layer 2 is silicon nitride (Si3N4) with adjustable nitrogen content, and the film thickness is 30-35 nm.
[0049] The main material of the second dielectric layer 3 is ZnO with adjustable oxygen content, and the film thickness is 10-12 nm.
[0050] The main material of the first barrier layer 5 is nickel-chromium (NiCr), and the film thickness is 1-2 nm.
[0051] The thickness of the first functional silver layer 4 is 7-8 nm.
[0052] The main material of the first dielectric protective layer 6 is AZO with adjustable oxygen content, and the film thickness is 6-8 nm.
[0053] The main material of the intermediate dielectric layer 7 is zinc tin oxide (ZnSnO2) with adjustable oxygen content, and the film thickness is 45-55 nm.
[0054] The main material of the intermediate third dielectric layer 8 is zinc oxide (ZnO2) with adjustable oxygen content, and the film thickness is 8-10 nm.
[0055] The thickness of the second functional silver layer 9 is 14–16 nm.
[0056] The main material of the second barrier layer 10 is nickel-chromium (NiCr), and the film thickness is 1-2 nm.
[0057] The main material of the upper dielectric layer 11 is AZO with adjustable oxygen content, and the film thickness is 5-7 nm.
[0058] The main material of the upper second dielectric layer 12 is silicon nitride (Si3N4) with adjustable nitrogen content, and the film thickness is 45-50 nm.
[0059] The main material of the upper third dielectric layer 13 is zirconium silicon nitride (ZrSiNx) with adjustable nitrogen content, and the film thickness is 1-5 nm.
[0060] The processing technology for the above-mentioned film layer is as follows:
[0061] All silicon nitride layers were sputtered and deposited in an argon-nitrogen atmosphere using a medium-frequency power supply with a rotating cathode. The power was 35 kW to 50 kW and the frequency of the medium-frequency power supply was 30 to 50 kHz.
[0062] All metal oxide layers were deposited by sputtering in an argon-oxygen atmosphere using a medium-frequency power supply and a rotating cathode, with a power of 25 kW to 45 kW and a medium-frequency power supply frequency of 30 to 40 kHz.
[0063] All non-metallic oxide layers were deposited by sputtering in an argon-oxygen atmosphere using a medium-frequency power supply and a rotating cathode, with a power of 20 kW to 25 kW and a medium-frequency power supply frequency of 30 to 40 kHz.
[0064] All nickel-chromium layers were sputtered with a nickel-chromium alloy planar target in an argon atmosphere at a power of 3–7 kW.
[0065] All functional silver layers are deposited by planar or rotating cathodes, DC or DC plus pulsed magnetron sputtering, in an argon atmosphere, with a power of 8–18 kW.
[0066] Example 1
[0067] A light gray, low-emissivity double-silver coated glass with medium transparency and medium gray color includes a glass substrate 1. On one side of the glass substrate 1, from the inside out, are sequentially disposed a Si3N4 layer with a thickness of 33.4 nm, a ZnO layer with a thickness of 10.3 nm, a silver film layer with a thickness of 7.7 nm, a NiCr layer with a thickness of 1.1 nm, an AZO layer with a thickness of 6.8 nm, a ZnSnO2 layer with a thickness of 49.6 nm, a ZnO layer with a thickness of 9 nm, a silver film layer with a thickness of 14.8 nm, a NiCr layer with a thickness of 1.1 nm, an AZO layer with a thickness of 6.4 nm, a Si3N4 layer with a thickness of 45 nm, and a silicon nitride zirconium layer with a thickness of 3 nm.
[0068] Example 2
[0069] A light gray, low-emissivity double-silver coated glass with medium transparency and medium gray color includes a glass substrate 1. On one side of the glass substrate 1, from the inside out, are sequentially disposed a Si3N4 layer with a thickness of 34.4 nm, a ZnO layer with a thickness of 10 nm, a silver film layer with a thickness of 7.8 nm, a NiCr layer with a thickness of 1.2 nm, an AZO layer with a thickness of 7.8 nm, a ZnSnO2 layer with a thickness of 48.6 nm, a ZnO layer with a thickness of 8.5 nm, a silver film layer with a thickness of 14.6 nm, a NiCr layer with a thickness of 1 nm, an AZO layer with a thickness of 7.4 nm, a Si3N4 layer with a thickness of 45 nm, and a silicon nitride zirconium layer with a thickness of 2 nm.
[0070] Example 3
[0071] A light gray, low-emissivity double-silver coated glass with medium transparency and medium gray color includes a glass substrate 1. On one side of the glass substrate 1, from the inside out, are sequentially disposed a Si3N4 layer with a thickness of 32.4 nm, a ZnO layer with a thickness of 11.3 nm, a silver film layer with a thickness of 7.8 nm, a NiCr layer with a thickness of 1.1 nm, an AZO layer with a thickness of 6 nm, a ZnSnO2 layer with a thickness of 50.6 nm, a ZnO layer with a thickness of 9.5 nm, a silver film layer with a thickness of 15 nm, a NiCr layer with a thickness of 1.2 nm, an AZO layer with a thickness of 6 nm, a Si3N4 layer with a thickness of 44 nm, and a silicon nitride zirconium layer with a thickness of 5 nm.
[0072] The glass colors in the above embodiments are shown in Table 1.
[0073] Table 1
[0074]
[0075] The meanings of each letter in Table 1 are as follows:
[0076] G represents the glass surface of the coated glass; R*g represents the reflectance value of the glass surface of the coated glass; a*g and b*g represent the color values of the glass surface of the coated glass, the more positive a*g is, the redder the color, the more negative a*g is, the greener the color, the more positive b*g is, the yellower the color, the more negative b*g is, the bluer the color; L*g represents the brightness of the glass surface of the coated glass.
[0077] F represents the coating surface of the coated glass; R*f represents the reflectance value of the coating surface of the coated glass; a*f and b*f represent the color values of the coating surface of the coated glass, the more positive a*f is, the redder the color, the more negative a*f is, the greener the color; the more positive b*f is, the yellower the color, the more negative b*f is, the bluer the color; L*f represents the brightness of the coating surface of the coated glass.
[0078] T represents the transmittance of the coated glass; Tr represents the transmittance of the coated glass; a*T and b*T represent the color values transmitted by the coated glass, the more positive a*T is, the redder the color, the more negative a*T is, the greener the color; the more positive b*T is, the yellower the color, the more negative b*T is, the bluer the color; L*T represents the brightness transmitted by the coated glass.
[0079] As can be seen from Table 1 above, the double silver low-emissivity coated glass in each embodiment is light gray, the emissivity can be controlled between 0.025 and 0.045, the glass surface color is light gray, the reflectivity Y value ranges from 17.5 to 19, the a* value ranges from 0 to 1.5, the b* value ranges from 0 to 2, and the transmittance is between 55% and 58%.
[0080] The features of the medium-transparency, medium-gray light gray double-silver low-emissivity coated glass and its manufacturing process provided by this utility model are as follows:
[0081] 1. The base dielectric layer and the second dielectric layer of this utility model are anti-reflective coating layers, serving to connect the glass and the functional layers. Good adhesion between the coating layers and the glass is required, and the internal stress of the entire low-emissivity film must be alleviated. The intermediate dielectric layer protects the first and second silver layers and can adjust the polarization color; different degrees of gray color shift can be achieved by adjusting its thickness. The upper three dielectric layers directly affect the product's scratch resistance, wear resistance, oxidation resistance, and corrosion resistance. Oxidation resistance is mainly addressed by the upper dielectric layer, toughness by the upper second dielectric layer, and scratch resistance, wear resistance, and corrosion resistance primarily by the upper third dielectric layer.
[0082] 2. Our medium-transparency, medium-gray, light gray double-silver low-emissivity coated glass features a first barrier layer between the base dielectric layer and the second dielectric layer. This layer enhances glass performance and achieves the desired color without affecting internal pressure. Furthermore, a third dielectric layer made of a novel material is added. The selected material possesses high hardness and is deposited onto the outermost layer of the film using magnetron sputtering, further strengthening the film's hardness. This enhances the film's scratch and abrasion resistance, providing significant advantages in post-processing. It facilitates off-site processing of the double-silver coating, reduces defective product losses during the process, lowers costs, and increases profits.
[0083] 3. By controlling the deposition thickness of the two functional silver layers, the emissivity of the glass is effectively reduced to between 0.025 and 0.035. This ensures excellent thermal insulation performance, aligning better with current green, environmentally friendly, and energy-saving concepts, and contributing more effectively to energy conservation and emission reduction.
[0084] 4. The interaction of the dielectric layer, dielectric protection layer, silver film layer, and barrier layer, along with the control of the thickness of each layer, allows for the deposition of a light gray, medium-transmittance, medium-gray double-silver low-emissivity film. Currently, the most common double-silver low-emissivity coated glass products on the market are blue-gray, silver-blue, gold, green, red, and purple, while light gray double-silver products with medium transmission are rare. This invention fills this market gap and expands the range of options available for double-silver low-emissivity coated glass.
[0085] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.
[0086] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.
Claims
1. A medium-transparency, medium-gray double-silver low-emissivity coated glass, comprising a glass substrate, characterized in that, One side of the glass substrate is provided with, from the inside out, a base dielectric layer, a base second dielectric layer, a first functional silver layer, a first barrier layer, a first dielectric protective layer, an intermediate dielectric layer, an intermediate third dielectric layer, a second functional silver layer, a second barrier layer, an upper dielectric layer, an upper second dielectric layer, and an outer protective layer. The thickness of the base dielectric layer is 30-35 nm; the thickness of the base second dielectric layer is 10-12 nm; the thickness of the intermediate third dielectric layer is 8-10 nm; the thickness of the upper second dielectric layer is 45-50 nm; the thickness of the outer protective layer is 1-5 nm; the thickness of the first functional silver layer is 7-8 nm; the thickness of the second functional silver layer is 14-16 nm; the single-layer thickness of the first barrier layer is 1-2 nm; the single-layer thickness of the second barrier layer is 1-2 nm; the thickness of the first dielectric protective layer is 6-8 nm; and the thickness of the upper dielectric layer is 5-7 nm.
2. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The base dielectric layer is a film composed of non-metallic nitrides.
3. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The second dielectric layer of the base layer is a film layer composed of metal oxides.
4. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The first dielectric protective layer is a film layer composed of metal oxides.
5. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The intermediate dielectric layer is a film made of metal oxide.
6. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The intermediate third dielectric layer is a film layer composed of metal oxides.
7. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The upper dielectric protective layer is a film layer composed of metal oxides.
8. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The upper dielectric layer is a film layer composed of metal oxides.
9. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The upper second dielectric layer is a film composed of non-metallic nitrides.
10. The medium-transparency, medium-gray double-silver low-emissivity coated glass as described in claim 1, characterized in that: The outer protective layer is a film layer composed of non-metallic oxides, and the first barrier layer and the second barrier layer are both film layers composed of one of the following materials: nickel-chromium, nickel-chromium oxide, or nickel-chromium nitride.