Composite multi-functional glass and vehicle glass

Abstract

The present invention provides a composite multifunctional glass and a vehicle glass. The composite multifunctional glass includes a first glass sheet, a first adhesive film layer, a composite multifunctional combination layer, a third adhesive film layer and a second glass sheet, the area S1 of the composite multifunctional combination layer is smaller than the area S2 of the composite multifunctional glass, and a void is formed around the entire periphery, and a second adhesive film layer with a thickness of H3 is provided adjacent to the peripheral cross section of the composite multifunctional combination layer in the void, and the thickness of the second adhesive film can be higher, lower or equal to the thickness of the composite multifunctional combination layer according to different circumstances. The present invention can effectively solve the wrinkle or wave phenomenon commonly existing when the conventional composite multifunctional layer is sandwiched between the double curved glass sheets, improve the overall yield, and solve the problem of increasing edge cracks occurring in the composite multifunctional layer glass product.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims priority based on a Chinese patent application filed with the China National Intellectual Property Administration on March 8, 2022, with an application number of 2022102278834 and an invention title of "Composite Multifunctional Glass and Vehicle Glass", and a Chinese patent application filed with the China National Intellectual Property Administration on March 8, 2022, with an application number of 202220502660X and an invention title of "Composite Multifunctional Glass and Vehicle Glass", and incorporates them herein by reference in their entirety.

[0002] The present invention relates to the field of glass manufacturing, and specifically to composite multifunctional glass and vehicle glass.

Background Art

[0003] A composite multifunctional glass product is a multifunctional laminated glass product formed by adding a layer having a composite multifunctional combination material to a glass sandwich.

[0004] Many of the conventional composite multifunctional combination materials have different thickness values and exist as flat surfaces. When sandwiching a double - curved glass plate or a flat glass plate, especially, the flat surface and the double - curved surface cannot be perfectly aligned. After sandwiching, a certain degree of wrinkles or wavy patterns occur in the composite multifunctional material, and as a result, cracks occur due to stress differences at the edges of the glass product.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The object of the present invention is to provide a composite multifunctional glass and a vehicle glass to solve the problems that wrinkles or wavy patterns occur when sandwiching a flat - surface composite multifunctional material with a double - curved or flat glass plate, and cracks occur due to stress differences at the edges of the glass product with a composite multifunctional layer added.

Means for Solving the Problems

[0006] To achieve the above objective, the present invention employs the following means.

[0007] The present invention relates to a composite multifunctional glass comprising, in a first aspect, a first glass plate, a first adhesive film layer, a composite multifunctional combination layer, a third adhesive film layer, and a second glass plate, which are laminated in order. The present invention provides a composite multifunctional glass in which the area of ​​the composite multifunctional combination layer is smaller than the area of ​​the composite multifunctional glass, and a void is formed around it that is equal to or approximately equal to its thickness, a second adhesive film layer is provided within the void adjacent to the peripheral cross-section of the composite multifunctional combination layer, one surface of the second adhesive film layer is in contact with a third adhesive film layer, and the other surface forms a gap with the first adhesive film layer.

[0008] In this composite multi-functional glass, the thickness of the composite multi-functional combination layer is greater than the thickness of the second adhesive film layer. In composite multi-functional glass products, during the processes of heat processing and high-pressure processing, the first adhesive film layer directly presses against the contact surface of the composite multi-functional combination layer, thereby smoothing out wrinkles or wave patterns that have formed on the composite multi-functional combination layer. Specifically, in the subsequent production process, the negative pressure effect due to vacuuming causes the composite multi-functional combination layer to spread outwards during exhaust, and at the same time, the negative pressure allows the first adhesive film layer to directly press against the contact surface of the composite multi-functional combination layer. Wrinkles or wave patterns that have formed on the composite multi-functional combination layer are smoothed out. Furthermore, in combination with the flow characteristics of the first adhesive film layer during processes such as heat processing and high-pressure processing, the gap between the first adhesive film layer and the second adhesive film layer is filled, resulting in a final good product.

[0009] The composite multifunctional combination layer in the present invention refers to a layer structure containing one or more functional elements, or one or more functional elements. Preferably, the composite multifunctional combination layer is an optical functional element, a photovoltaic element, an antenna communication device, a solar power generation device including a solar cell (silicon-based, compound-based, organic-based, etc.), etc. The optical functional element is one or more combinations selected from PDLC (polymer dispersed liquid crystal), GHLC (guest-host liquid crystal), EC (electrochromic element), SPD (suspended particle device), LC, LED, heat insulation film, discoloration film, light guide film, display film, etc., but is not limited thereto.

[0010] According to the composite multifunctional glass provided by the first aspect of the present invention, preferably, the area S1 of the composite multifunctional combination layer is 0.6 to 0.9 times the area S2 of the composite multifunctional glass, that is, 0.6S2 ≤ S1 ≤ 0.9S2.

[0011] According to the composite multifunctional glass provided by the first aspect of the present invention, preferably, the relationship between the thickness H of the composite multifunctional combination layer and the thickness H3 of the second adhesive film layer satisfies 0.7H ≤ H3 < H.

[0012] According to the composite multifunctional glass provided by the first aspect of the present invention, preferably, the relationship between the thickness H of the composite multifunctional combination layer and the thickness H3 of the second adhesive film layer satisfies 0.7H ≤ H3 ≤ 0.8H.

[0013] According to the composite multifunctional glass provided by the first aspect of the present invention, preferably, the thickness H of the composite multifunctional combination layer satisfies 0.1 mm ≤ H ≤ 1.2 mm.

[0014] According to the composite multifunctional glass provided by the first aspect of the present invention, the height H2 of the gap is equal to the difference in thickness between the thickness H of the composite multifunctional combination layer and the thickness H3 of the second adhesive film layer.

[0015] According to the composite multifunctional glass provided in the first aspect of the present invention, preferably, the relationship between the thickness H1 of the first adhesive film layer and the thickness of the composite multifunctional combination layer satisfies 1.3H3 ≤ H1 ≤ 2H3.

[0016] According to the composite multifunctional glass provided in the first aspect of the present invention, preferably, the first glass plate and the second glass plate are independently selected from single-pane glass plates or laminated glass plates made of organic glass or inorganic glass.

[0017] According to the composite multifunctional glass provided in the first aspect of the present invention, preferably, the first glass plate and the second glass plate form both surfaces of the composite multifunctional glass product, and may be flat glass plates or double-curved glass plates. More preferably, the radius of curvature of the double-curved glass plate is ≥ 2200 mm.

[0018] According to the composite multifunctional glass provided in the first aspect of the present invention, preferably, the first adhesive film layer, the second adhesive film layer, and the third adhesive film layer are adhesive film layers independently made of PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), PU (polyurethane), and the like.

[0019] In the composite multifunctional glass provided by the first aspect of the present invention, a gap (with a height of H2) remains between the first adhesive film layer and the second adhesive film layer during the sandwiching process. This prevents the first adhesive film layer from being supported by the second adhesive film layer at its edges during the sandwiching process, allowing the composite multifunctional material layer to be pressed and further stretched, which is advantageous for preventing wrinkles or wavy phenomena from occurring in the double-curved glass plate and improving product yield. Furthermore, the sandwiching process for this composite multifunctional glass is the same as a normal process, making the process simple and the operating procedure convenient.

[0020] The present invention relates to a composite multifunctional glass comprising, in a second aspect, a first glass plate, a first adhesive film layer, a composite multifunctional combination layer, a third adhesive film layer, and a second glass plate, which are laminated in order. The area S1 of the composite multifunctional combination layer is smaller than the area S2 of the composite multifunctional glass, and an empty space that coincides with or is approximately the same as its thickness H is formed in the whole periphery thereof. A second adhesive film layer with a thickness of H3 is provided in the empty space adjacent to the peripheral cross-section of the composite multifunctional combination layer. When S1 / S2≤0.5 and / or H<0.15 mm, H3 = 0. When 0.5 < S1 / S2 < 0.98 and H≥0.15 mm are satisfied, 0 < H3≤H(S1 / S2 + 0.2) is satisfied. A composite multifunctional glass is provided.

[0021] In a preferred embodiment, when 0.5 < S1 / S2 < 0.98 and H≥0.15 mm are satisfied, the thickness H3 of the second adhesive film layer further satisfies H3 < H. In this case, one surface of the second adhesive film layer contacts the third adhesive film layer, and the other surface forms a gap with the first adhesive film layer. The height H2 of this gap is equal to the difference in thickness between the thickness H of the composite multifunctional combination layer and the thickness H3 of the second adhesive film layer.

[0022] In this preferred embodiment, the thickness of the composite multifunctional combination layer in the composite multifunctional glass is greater than the thickness of the second adhesive film layer. In the process of hot processing and high-pressure processing of the composite multifunctional glass product, the wrinkles or wavy patterns generated in the composite multifunctional combination layer can be stretched by directly pressing the contact surface of the first adhesive film layer against the composite multifunctional combination layer. Specifically, in the subsequent production process, due to the negative pressure action of vacuum pumping, the composite multifunctional combination layer is extended to the periphery during exhaust, and at the same time, due to the negative pressure, the first adhesive film layer can directly press the contact surface of the composite multifunctional combination layer. The wrinkles or wavy patterns generated in the composite multifunctional combination layer are stretched. Furthermore, in combination with the flow characteristics of the first adhesive film layer in processes such as hot processing and high pressure, the gap between the first adhesive film layer and the second adhesive film layer can be filled to obtain a final good product.

[0023] In a further preferred embodiment, when 0.5 < S1 / S2 < 0.98 and H ≥ 0.15 mm are satisfied, the thickness H3 of the second adhesive film layer is H3 = H, that is, the second adhesive film layer and the composite multifunctional combination layer are provided flush with the same thickness. The second adhesive film layer is located entirely around the composite multifunctional combination layer and completely fills the area region by which the composite multifunctional combination layer is smaller than the composite multifunctional glass product.

[0024] In a further preferred embodiment, when 0.5 < S1 / S2 < 0.98 and H ≥ 0.15 mm are satisfied, the thickness H3 of the second adhesive film layer further satisfies H3 > H. In this case, a cavity is formed between the composite multifunctional combination layer and the first adhesive film layer. The height H2’ of this cavity is equal to the difference in thickness between the thickness H3 of the second adhesive film layer and the thickness H of the composite multifunctional combination layer.

[0025] In this preferred embodiment, due to the formation of the cavity, after the composite multifunctional layer is sandwich-laminated, in the process of evacuating the glass product from the outside and applying pressure from the outside, the composite multifunctional layer has a space for stretching, reducing the occurrence of wrinkles or wavy phenomena, and also reducing the risk of cracks occurring due to stress differences at the edges of the composite multifunctional glass product.

[0026] According to the composite multifunctional glass provided by the second aspect of the present invention, preferably, the thickness H of the composite multifunctional combination layer satisfies 0.08 mm ≤ H ≤ 1.2 mm.

[0027] According to the composite multifunctional glass provided by the second aspect of the present invention, preferably, the thickness of the first adhesive film layer is 0.38 mm to 0.76 mm, and more preferably, it is 0.76 mm.

[0028] According to the composite multifunctional glass provided by the second aspect of the present invention, preferably, the thickness of the third adhesive film layer is 0.38 mm to 0.76 mm, and more preferably, it is 0.38 mm.

[0029] According to the composite multifunctional glass provided by the second aspect of the present invention, preferably, the first glass plate and the second glass plate are independently selected from single glass plates or laminated glass plates made of organic glass or inorganic glass.

[0030] According to the composite multifunctional glass provided by the second aspect of the present invention, preferably, the first glass plate and the second glass plate form both surfaces of the composite multifunctional glass product, and may be flat glass plates or double-curved glass plates. More preferably, the radius of curvature of the double-curved glass plate is ≥ 2200 mm.

[0031] According to the composite multifunctional glass provided by the second aspect of the present invention, preferably, the first adhesive film layer, the second adhesive film layer and the third adhesive film layer are independently adhesive film layers made of PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), PU (polyurethane), etc.

[0032] The third aspect of the present invention provides a vehicle glass including the composite multifunctional glass provided by the first aspect or the second aspect, such as front glass, rear glass, side glass, roof glass, etc.

[0033] In the process of sandwiching, the composite multifunctional glass provided by the second aspect of the present invention determines the thickness of the second adhesive film layer according to the magnitude relationship between the thickness H and area S1 of the composite multifunctional layer and the area S2 of the composite multifunctional glass product. The selection of the thickness H3 of the second adhesive film layer can preferably solve the following problems. 1) When H < 0.15 mm, and / or S1 / S2 ≤ 0.5, H3 < H, H3 = 0, a void with a height equal to or approximately equal to H is formed between the first adhesive film layer and the second adhesive film layer. The first adhesive film layer in the sandwiching process is not supported by the second adhesive film layer at the edge, and at the same time, the composite multifunctional material layer can be pressed, which is advantageous for further stretching the composite multifunctional material layer and avoiding the occurrence of wrinkles or wavy phenomena in the double-curved glass plate. 2) When 0.5 < S1 / S2 < 0.98 and H ≥ 0.15 mm are satisfied, for the thickness H3 of the second adhesive film layer, H, S1, and S2, they satisfy the relational expression 0 < H3 ≤ H(S1 / S2 + 0.2). When H3 < H, a gap with a height of H2 is formed between the first adhesive film layer and the second adhesive film layer. In the heat treatment process, by the first adhesive film layer contacting and pressing the composite multifunctional combination layer, wrinkles or wavy patterns that may occur on the curved surface product of the composite multifunctional combination layer are stretched. At the same time, in combination with the fluidity of the first adhesive film layer and the third adhesive film layer during the heat treatment and high-pressure treatment processes, the gap between the first adhesive film layer and the second adhesive film layer is filled, and finally a high-quality product can be formed. 3) When 0.5 < S1 / S2 < 0.98 and H ≥ 0.15 mm are satisfied, for the thickness H3 of the second adhesive film layer, H, S1, and S2, they satisfy the relational expression 0 < H3 ≤ H(S1 / S2 + 0.2). When H3 = H, there is no gap between the first adhesive film layer and the second adhesive film layer. When the edge of the composite multifunctional combination layer is close to the edge of the glass product, due to the influence of the stress of the glass, the glass product will be subjected to an external pressure effect during the processing process. This form solves the problem that cracks are extremely likely to occur along the position of the edge of the composite multifunctional layer. 4) When 0.5 < S1 / S2 < 0.98 and H ≥ 0.15 mm are satisfied, for the thickness H3 of the second adhesive film layer, H, S1, and S2, they satisfy the relational expression 0 < H3 ≤ H(S1 / S2 + 0.2). When H3 > H, a cavity with a height of H2' is formed between the composite multifunctional layer and the first adhesive film layer. Due to the formation of this cavity, after the composite multifunctional layer is sandwich laminated, in the process of the glass product being evacuated and pressurized from the outside, the composite multifunctional layer is allowed to have a space to stretch on the surface of the double-curved glass, reducing the occurrence of wrinkles or wavy phenomena, and also reducing the cracks generated by the stress difference at the edge of the composite multifunctional glass product.

Advantages of the Invention

[0034] The present invention can effectively resolve the wrinkle or wave phenomenon that is commonly present when conventional composite multi-functional layers are sandwiched between two curved glass plates, thereby improving the overall yield and solving the problem of increased edge cracking that occurs in composite multi-functional layer glass products. [Brief explanation of the drawing]

[0035] [Figure 1] Schematic cross-sectional view of the composite multi-functional glass in Example 3 [Figure 2] Schematic cross-sectional diagrams of the composite multi-functional glass in Examples 1 and 4 [Figure 3] Planar schematic diagrams of the composite multi-functional glass in Examples 1 and 4 [Figure 4] Schematic cross-sectional view of the composite multi-functional glass in Example 5 [Figure 5] Schematic cross-sectional view of the composite multi-functional glass in Example 2 [Modes for carrying out the invention]

[0036] The drawings provided herein are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way. Furthermore, the shapes and proportions of the parts shown in the drawings are schematic and intended to facilitate understanding of the present invention, and do not specifically limit the shapes and proportions of the parts of the present invention. Those skilled in the art can implement the present invention by selecting various possible shapes and proportions depending on the specific case, based on the teachings of the present invention.

[0037] To further illustrate the present invention, preferred embodiments and drawings are provided below. In the drawings, similar parts are denoted by the same reference numerals. As will be understood by those skilled in the art, the following descriptions are illustrative and not limiting, and the scope of protection of the present invention should not be limited thereto.

[0038] Furthermore, regarding some directional terms such as "up" and "down" mentioned in the embodiments of the present invention, the meaning of these directional terms is related to the arrangement of the composite multi-functional glass and should not be understood as limiting the scope of protection of this application.

[0039] (Example 1) As shown in Figures 2 and 3, the composite multi-functional glass includes, in order from top to bottom, a first glass plate 1, a first adhesive film layer 2, a composite multi-functional combination layer 6, a third adhesive film layer 4, and a second glass plate 5.

[0040] The area S1 of the composite multifunctional combination layer 6 is smaller than the area S2 of the composite multifunctional glass, and a void is formed around its entire periphery that matches or approximately matches its thickness. A second adhesive film layer 3 is provided within this void adjacent to the peripheral cross-section of the composite multifunctional combination layer 6, and one surface of the second adhesive film layer 3 is in contact with the third adhesive film layer 4, while the other surface forms a gap with the first adhesive film layer 2. The width of the second adhesive film layer 3 matches the width of the void (i.e., it fills this void in the planar dimensions of Figure 3), but its thickness is smaller than the height of the void, forming a gap with a height H2 between it and the first adhesive film layer 2. The height H2 of the gap is the difference between the thickness H of the composite multifunctional combination layer 6 and the thickness H3 of the second adhesive film layer 3. The presence of this step H2 prevents the edges of the first adhesive film layer 2 from being supported by the second adhesive film layer 3 during the sandwiching process, allowing the composite multi-functional material layer 6 to be pressed down. This is advantageous for further stretching the composite multi-functional material layer 6, avoiding the occurrence of wrinkles or wavy phenomena in the double curved glass plate and increasing the product yield.

[0041] Specifically, in this embodiment, the first glass plate 1 and the second glass plate 5 are both single-layer glass plates made of organic or inorganic glass, and both are double-curvature glass with a double curvature of 2800 mm. The first adhesive film layer 2, the second adhesive film layer 3, and the third adhesive film layer 4 are all adhesive film layers made of PVB (polyvinyl butyral).

[0042] The thickness H1 of the first adhesive film layer 2 is 0.76 mm, the thickness H3 of the second adhesive film layer 3 is 0.5 mm, the thickness of the third adhesive film layer 4 is 0.38 mm, the thickness H of the composite multifunctional material layer 6 is 0.7 mm, and the height H2 of the gap between the first adhesive film layer 2 and the second adhesive film layer 3 is 0.2 mm. The area (S1) of the composite multifunctional combination layer 6 is 0.6 times the area (S2) of the composite multifunctional glass.

[0043] (Example 2) As shown in Figure 5, the composite multi-functional glass in this embodiment differs from the embodiment in the following respects.

[0044] The first glass plate 1 is a single-layer glass plate made of organic or inorganic glass, and the second glass layer 5 is a laminated glass plate. Both the first glass plate 1 and the second glass layer 5 are double-curvature glass with a double curvature of 3000 mm. The first glass plate 1 may also be a laminated glass plate.

[0045] The first adhesive film layer 2, the second adhesive film layer 3, and the third adhesive film layer 4 are all adhesive film layers made of EVA (ethylene-vinyl acetate copolymer).

[0046] The thickness H1 of the first adhesive film layer 2 is 1.14 mm, the thickness H3 of the second adhesive film layer 3 is 0.76 mm, the thickness of the third adhesive film layer 4 is 0.38 mm, the thickness H of the composite multifunctional material layer 6 is 1.0 mm, and the height H2 of the gap between the first adhesive film layer 2 and the second adhesive film layer 3 is 0.24 mm. The area (S1) of the composite multifunctional combination layer 6 is 0.8 times the area (S2) of the composite multifunctional glass.

[0047] (Example 3) As shown in Figure 1, the composite multifunctional glass includes, in order from top to bottom, a first glass plate 1, a first adhesive film layer 2, a composite multifunctional combination layer 6, a third adhesive film layer 4, and a second glass plate 5. The area S1 of the composite multifunctional combination layer 6 is smaller than the area S2 of the composite multifunctional glass, and a void is formed around its entire periphery that is equal to or approximately equal to its thickness H.

[0048] Here, S1 / S2 = 0.4, and S1 / S2 ≤ 0.5 is satisfied, so the second adhesive film layer 3 is not installed. The thickness H of the composite multi-functional combination layer 6 is 0.1 mm, the thickness H1 of the first adhesive film layer 2 is 0.76 mm, and the height of the space around the composite multi-functional combination layer 6 is 0.1 mm.

[0049] The double curvature of the composite multi-functional glass product is 3000 mm. The first adhesive film layer 2 directly presses against the contact surface of the composite multi-functional combination layer 6, thereby smoothing out any wrinkles or wavy patterns that have formed on the composite multi-functional combination layer 6. During the heat processing and high-pressure processing processes, the fluidity of the first adhesive film layer 2 and the third adhesive film layer 4 fills any voids in the composite multi-functional glass plate product.

[0050] In this embodiment, the first glass plate 1 is a single glass plate made of organic or inorganic glass, the second glass layer 5 is a laminated glass plate, and both the first glass plate 1 and the second glass layer 5 are double curvature glass with a double curvature of 3000 mm. The first adhesive film layer 2, the second adhesive film layer 3, and the third adhesive film layer 4 are all adhesive film layers made of PVB (polyvinyl butyral).

[0051] (Example 4) As shown in Figures 2 and 3, the composite multi-functional glass includes, in order from top to bottom, a first glass plate 1, a first adhesive film layer 2, a composite multi-functional combination layer 6, a third adhesive film layer 4, and a second glass plate 5.

[0052] The area S1 of the composite multi-functional combination layer 6 is smaller than the area S2 of the composite multi-functional glass, and an empty space that coincides with or is approximately the same as its thickness H is formed around the whole of it.

[0053] Here, S1 / S2 = 0.6, the thickness H of the composite multi-functional combination layer 6 is 1.0 mm, the thickness H1 of the first adhesive film layer 2 is 0.76 mm, and the thickness H4 of the third adhesive film layer 4 is 0.76 mm.

[0054] 0.5 < S1 / S2 < 0.98 is satisfied, and H ≥ 0.15 mm. A second adhesive film layer 3 with a thickness of H3 is provided adjacent to the peripheral cross-section of the composite multi-functional combination layer 6 in the empty space. One surface of the second adhesive film layer 3 contacts the third adhesive film layer 4, and the other surface forms a gap with a height of H2 with the first adhesive film layer 2. The width of the second adhesive film layer 3 coincides with the width of the empty space (that is, it fills this empty space in the planar dimension of FIG. 3).

[0055] In this case, when 0 < H3 ≤ H(S1 / S2 + 0.2) is satisfied, H3 ≤ 0.8 mm. When H3 = 0.8 mm, the height H2 of the gap between the first adhesive film layer 2 and the second adhesive film layer 3 is H2 = H - H3, that is, H2 = 1.0 mm - 0.8 mm = 0.2 mm.

[0056] The double curvature of the composite multi-functional glass product is 2800 mm. Here, the second adhesive film layer 3 is located around the whole of the composite multi-functional combination layer 6 and plays a role in filling the area region where the composite multi-functional combination layer 6 is smaller than the composite multi-functional glass product. Here, a gap with a height of H2 is formed after the sandwich lamination. In the heat treatment process, by the first adhesive film layer 2 contacting and pressing the composite multi-functional combination layer 6, wrinkles or wavy patterns that may occur on the curved surface of the composite multi-functional combination layer 6 are stretched. At the same time, in combination with the fluidity of the first adhesive film layer 2 and the third adhesive film layer 4 in the heat treatment and high-pressure treatment processes, the gap between the first adhesive film layer 2 and the second adhesive film layer 3 is filled, and finally a good product can be obtained.

[0057] In this embodiment, both the first glass plate 1 and the second glass plate 5 are single-plate glass plates made of organic glass or inorganic glass, and both are double-curvature glass with a double curvature of 2800mm. The first adhesive film layer 2, the second adhesive film layer 3, and the third adhesive film layer 4 are all adhesive film layers made of PVB (polyvinyl butyral).

[0058] (Example 5) The composite multifunctional glass in this embodiment is different from that in Example 2 in the following points.

[0059] S1 / S2 = 0.9, the thickness H of the composite multifunctional combination layer 6 is 0.9mm, the thickness H1 of the first adhesive film layer 2 is 0.76mm, and the thickness H4 of the third adhesive film layer 4 is 0.38mm.

[0060] When 0.5 < S1 / S2 < 0.98 is satisfied, and H ≥ 0.15mm, and the thickness H3 of the second adhesive film layer satisfies 0 < H3 ≤ H(S1 / S2 + 0.2), then H3 ≤ 0.99mm, preferably H3 = 0.9mm, and the height H2 of the gap between the first adhesive film layer 2 and the second adhesive film layer 3 is 0mm, that is, the thickness of the second adhesive film layer is equal to the thickness of the composite multifunctional combination layer 6.

[0061] The double curvature of the composite multifunctional glass product is 3300mm. Here, the second adhesive film layer 3 is located entirely around the composite multifunctional combination layer 6, and the composite multifunctional combination layer 6 completely fills the area region that is smaller than the composite multifunctional glass product.

[0062] (Example 6) As shown in FIG. 4, the composite multifunctional glass includes a first glass plate 1, a first adhesive film layer 2, a composite multifunctional combination layer 6, a third adhesive film layer 4, and a second glass plate 5 laminated in order from top to bottom.

[0063] The area S1 of the composite multifunctional combination layer 6 is smaller than the area S2 of the composite multifunctional glass, and an empty part that coincides or almost coincides with its thickness H is formed entirely around it.

[0064] Here, S1 / S2 = 0.9, the thickness H of the composite multifunctional combination layer 6 is 1.0 mm, the thickness H1 of the first adhesive film layer 2 is 0.76 mm, and the thickness H4 of the third adhesive film layer 4 is 0.38 mm.

[0065] 0.5 < S1 / S2 < 0.98 is satisfied, and H ≥ 0.15 mm. A second adhesive film layer 3 with a thickness of H3 is provided adjacent to the peripheral cross-section of the composite multifunctional combination layer 6 within the void.

[0066] When the thickness H3 of the second adhesive film layer satisfies 0 < H3 ≤ H(S1 / S2 + 0.2), H3 ≤ 1.1 mm, and preferably H3 = 1.1 mm. In this case, a cavity with a height H2’ = 0.1 mm is formed between the composite multifunctional combination layer 6 and the first adhesive film layer 2.

[0067] The double curvature of the composite multifunctional glass product is 3500 mm. Here, the second adhesive film layer 3 is located entirely around the composite multifunctional combination layer 6 and serves to fill the area region by which the composite multifunctional combination layer 6 is smaller than the composite multifunctional glass product. Here, when the thickness H3 of the second adhesive film layer satisfies H3 > H, a 0.1 mm 2 cavity is formed between the composite multifunctional combination layer 6 and the first adhesive film layer 2. With the formation of this cavity, after the composite multifunctional layer 6 is sandwich laminated, in the process where the glass product is evacuated from the outside and pressure is applied from the outside, the composite multifunctional layer is provided with a space to be extended on the surface of the double-curved glass, reducing the occurrence of wrinkles or wavy phenomena, and at the same time, it is also possible to reduce the risk of cracking due to stress differences at the edge of the glass product.

[0068] Needless to say, the above embodiments of the present invention are merely exemplified for clearly explaining the present invention and do not limit the embodiments of the present invention. Those skilled in the art can make other different forms of changes or variations based on the above description. Here, it is impossible to list all the embodiments comprehensively, and the obvious changes or variations from the technical solution of the present invention still fall within the protection scope of the present invention. [Explanation of Symbols]

[0069] 1. First glass plate 2. First adhesive film layer 3. Second adhesive film layer 4. Third adhesive layer 5. Second glass plate 6. Multifunctional Combination Layer Area of ​​S1 Multifunctional Combination Layer 6 Area of ​​S2 composite multi-functional glass H thickness of composite multi-functional material layer 6 H1 Thickness of the first adhesive film layer 2 H2 Height of the gap between the first adhesive film layer 2 and the second adhesive film layer 3 H2' Height of the cavity between the first adhesive film layer 2 and the composite multi-functional combination layer 6 H3 Thickness of the second adhesive film layer 3 H4 Thickness of the third adhesive film layer 4

Claims

1. A composite multifunctional glass comprising a first glass sheet (1), a first adhesive film layer (2), a composite multifunctional combination layer (6), a third adhesive film layer (4) and a second glass sheet (5) laminated in this order, The area of ​​the composite multifunctional combination layer (6) is smaller than the area of ​​the composite multifunctional glass, and a hollow space is formed around the entire periphery thereof. A second adhesive film layer (3) is provided in the hollow space adjacent to the peripheral cross section of the composite multifunctional combination layer (6), and one surface of the second adhesive film layer (3) contacts the third adhesive film layer (4), and the other surface forms a gap with the first adhesive film layer (2); The area of ​​the composite multifunctional combination layer (6) is 0.6-0.9 times the area of ​​the composite multifunctional glass; the relationship between the thickness H1 of the first adhesive film layer (2) and the thickness H3 of the second adhesive film layer (3) satisfies 1.3H3≦H1≦2H3; A composite multi-functional glass characterized by:

2. The composite multifunctional glass according to claim 1, characterized in that the relationship between the thickness H of the composite multifunctional combination layer (6) and the thickness H3 of the second adhesive film layer (3) satisfies 0.7H≦H3<H.

3. The composite multifunctional glass according to claim 1, characterized in that the relationship between the thickness H of the composite multifunctional combination layer (6) and the thickness H3 of the second adhesive film layer (3) satisfies 0.7H≦H3<0.8H.

4. The composite multifunctional glass according to claim 2, characterized in that the thickness H of the composite multifunctional combination layer (6) satisfies the following: 0.1 mm≦H≦1.2 mm.

5. 2. The composite multifunctional glass according to claim 1, characterized in that the first glass pane (1) and the second glass pane (5) are flat glass panes or double-curvature glass panes.

6. 6. The composite multi-functional glass according to claim 5, wherein the radius of curvature of the double curved glass pane is ≥ 2200 mm.

7. 2. The composite multifunctional glass according to claim 1, characterized in that the composite multifunctional combination layer (6) is an optically functional element.

8. A composite multifunctional glass comprising a first glass sheet (1), a first adhesive film layer (2), a composite multifunctional combination layer (6), a third adhesive film layer (4) and a second glass sheet (5) laminated in this order, The area S1 of the composite multifunctional combination layer (6) is smaller than the area S2 of the composite multifunctional glass, and a hollow space is formed around the entire periphery thereof, and a second adhesive film layer (3) having a thickness H3 is provided adjacent to the peripheral cross section of the composite multifunctional combination layer (6) in the hollow space; When 0.5<S1 / S2<0.98 and H≧0.15 mm are satisfied, 0<H3≦H(S1 / S2+0.2) is satisfied, the thickness H3 of the second adhesive film layer (3) further satisfies H3<H, one surface of the second adhesive film layer (3) contacts the third adhesive film layer (4), and the other surface forms a gap with the first adhesive film layer (2); the relationship between the thickness H1 of the first adhesive film layer (2) and the thickness H3 of the second adhesive film layer (3) satisfies 1.3H3≦H1≦2H3; A composite multi-functional glass characterized by:

9. The composite multifunctional glass according to claim 8, characterized in that the thickness H of the composite multifunctional combination layer (6) satisfies 0.08 mm≦H≦1.2 mm.

10. The composite multifunctional glass according to claim 8, characterized in that the thickness of the first adhesive film layer (2) is between 0.38 mm and 0.76 mm.

11. The composite multifunctional glass according to claim 8, characterized in that the thickness of the third adhesive film layer (4) is between 0.38 mm and 0.76 mm.

12. 9. The composite multifunctional glass according to claim 8, characterized in that the first glass pane (1) and the second glass pane (5) are flat glass panes or double curved glass panes, and the radius of curvature of the double curved glass panes is ≧2200 mm.

13. 9. The composite multifunctional glass according to claim 8, characterized in that the composite multifunctional combination layer (6) is an optically functional element.

14. Vehicle glazing comprising a composite multifunctional glazing according to any one of claims 1 to 13.

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