Multi-functional composite 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 from a Chinese patent application filed with the China Patent Office on March 8, 2022, bearing application number 2022102278834 and titled "Composite Multi-Functional Glass and Vehicle Glass", and a Chinese patent application filed with the China Patent Office on March 8, 2022, bearing application number 202220502660X and titled "Composite Multi-Functional Glass and Vehicle Glass", both of which are incorporated by reference in their entireties herein.

[0002] The present invention relates to the field of glass manufacturing, specifically to composite multi-functional glazing and vehicle glazing. [Background technology]

[0003] Composite multi-function glass products are multi-function laminated glass products formed by adding layers having composite multi-function combination materials to a glass sandwich.

[0004] Most of the conventional composite multi-functional materials have different thickness values ​​and exist as flat surfaces, and when sandwiched with a double curved glass plate or a flat glass plate, the flat surface and the double curved surface cannot be perfectly matched, and after sandwiching, the composite multi-functional material will have some wrinkles or wavy patterns, and even the edge of the glass product will have the problem of cracks due to stress difference. Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to provide a composite multi-functional glass and vehicle glass to solve the problem of wrinkles or wavy patterns occurring when a flat composite multi-functional material is sandwiched between a double curved or flat glass plate, and the problem of cracks occurring due to stress differences at the edges of a glass product to which a composite multi-functional layer has been added. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention employs the following means.

[0007] In a first aspect, the present invention provides a composite multifunctional glass comprising 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, A composite multifunctional glass is provided, in which the area of ​​the composite multifunctional combination layer is smaller than the area of ​​the composite multifunctional glass, and a hollow space is formed around its entire periphery that corresponds or nearly corresponds to its thickness, a second adhesive film layer is provided within the hollow space adjacent to the peripheral cross section of the composite multifunctional combination layer, and one surface of the second adhesive film layer contacts a third adhesive film layer and the other surface forms a gap with the first adhesive film layer.

[0008] In this composite multifunctional glass, the thickness of the composite multifunctional combination layer is greater than the thickness of the second adhesive film layer. In the process of thermal processing and high pressure processing, the composite multifunctional glass product can be stretched out by directly pressing the contact surface of the composite multifunctional combination layer with the first adhesive film layer, thereby smoothing out the wrinkles or wavy patterns generated in the composite multifunctional combination layer. Specifically, in the subsequent production process, the composite multifunctional combination layer is expanded to the surroundings during exhaust by the negative pressure action of vacuum drawing, and at the same time, the first adhesive film layer can be directly pressed against the contact surface of the composite multifunctional combination layer by the negative pressure. The wrinkles or wavy patterns generated in the composite multifunctional combination layer are smoothed out. Furthermore, in combination with the flow characteristics of the first adhesive film layer in the process of thermal processing, high pressure, etc., the gap between the first adhesive film layer and the second adhesive film layer can be filled to produce a final good product.

[0009] The composite multifunctional combination layer in the present invention refers to one or two or more functional elements, or a layer structure including one or two 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 (such as silicon-based, compound-based, organic-based, etc.), and the optical functional element is one or a combination of two or more 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 by 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 by the first aspect of the present invention, preferably, the first glass sheet and the second glass sheet are independently selected from a single glass sheet or a laminated glass sheet made of an organic glass or an inorganic glass.

[0017] According to the composite multifunctional glass provided by the first aspect of the present invention, preferably, the first glass sheet and the second glass sheet are both surfaces of the composite multifunctional glass product, and may be flat glass sheets or double curved glass sheets. More preferably, the radius of curvature of the double curved glass sheets is ≧2200mm.

[0018] According to the composite multifunctional glass provided by 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 independently adhesive film layers made of PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), PU (polyurethane) or the like.

[0019] In the composite multifunctional glass provided by the first aspect of the present invention, a gap (height H2) is left between the first adhesive film layer and the second adhesive film layer during the sandwiching process, so that the first adhesive film layer is not supported by the second adhesive film layer at the side during the sandwiching process, and the composite multifunctional material layer can be pressed, which is favorable for further stretching the composite multifunctional material layer, and prevents the double curved glass plate from wrinkles or wavy phenomena, and improves the product yield. In addition, the sandwiching process of this composite multifunctional glass is the same as the normal process, and the process is simple and the operation procedure is convenient.

[0020] In a second aspect, the present invention provides a composite multifunctional glass comprising a first glass sheet, a first adhesive film layer, a composite multifunctional combination layer, a third adhesive film layer, and a second glass sheet, 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 portion is formed around it that coincides with or is approximately the same as its thickness H. A second adhesive film layer with a thickness of H3 is provided in the empty portion 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 first adhesive film layer directly presses the contact surface of the composite multifunctional combination layer, so that wrinkles or wavy patterns generated in the composite multifunctional combination layer can be stretched. Specifically, in the subsequent production process, due to the negative pressure action of vacuum pumping, the composite multifunctional combination layer is extended around 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 qualified 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 the composite multifunctional combination layer completely fills the area region that 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 and the glass product is evacuated and pressurized from the outside, the composite multifunctional layer has a space to expand, 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 the surfaces on both sides 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, and 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 side, 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, the relational expression 0 < H3 ≤ H(S1 / S2 + 0.2) is satisfied. 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 hot processing 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 in the hot processing and high-pressure processing processes, the gap between the first adhesive film layer and the second adhesive film layer is filled, and finally a good 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, the relational expression 0 < H3 ≤ H(S1 / S2 + 0.2) is satisfied. 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 action in 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, the relational expression 0 < H3 ≤ H(S1 / S2 + 0.2) is satisfied. 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, when the glass product is evacuated from the outside and pressure is applied from the outside, the composite multifunctional layer has a space to be stretched on the surface of the double-curved glass, which can reduce the occurrence of wrinkles or wavy phenomena and also reduce 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 solve the wrinkle or wavy phenomenon that commonly exists when a conventional composite multi-functional layer is sandwiched between double curved glass plates, improve the overall yield, and solve the problem of increased edge cracks occurring in composite multi-functional layer glass products. [Brief description of the drawings]

[0035] [Figure 1] Schematic cross-sectional view of composite multi-functional glass in Example 3 [Diagram 2] Schematic cross-sectional view of composite multi-functional glass in Examples 1 and 4 [Diagram 3] Schematic plan view of the composite multifunctional glass in Examples 1 and 4 [Figure 4] Schematic cross-sectional view of composite multi-functional glass in Example 5 [Diagram 5] Schematic cross-sectional view of composite multi-functional glass in Example 2 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] The drawings described herein are merely for illustrative purposes and are not intended to limit the scope of the present disclosure in any way. Furthermore, the shapes and ratios of each part in the drawings are schematic and are intended to facilitate understanding of the present invention, and do not specifically limit the shapes and ratios of each part of the present invention. Those skilled in the art can select various possible shapes and ratios according to specific cases based on the teachings of the present invention to implement the present invention.

[0037] In order to more clearly explain the present invention, the present invention will be further described below in conjunction with preferred embodiments and drawings. In the drawings, similar parts are given the same reference numerals. As will be understood by those skilled in the art, the contents specifically described below are illustrative and not restrictive, and the scope of protection of the present invention should not be limited thereby.

[0038] In addition, with regard to some orientation terms, such as "upper" and "lower", mentioned in the embodiments of the present invention, the meanings of these orientation terms are related to the arrangement of the composite multi-functional glass, and should not be understood as limiting the scope of protection of the present application.

[0039] Example 1 As shown in Figures 2 and 3, 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, which are laminated from the top.

[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 the entire periphery, which is equal to or almost equal to the thickness of the composite multifunctional combination layer 6. A second adhesive film layer 3 is provided in the void 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 second adhesive film layer 3 has a width equal to the width of the void (i.e., it fills the void in the planar dimensions of FIG. 3), but a thickness smaller than the height of the void, and a gap with a height H2 is formed between the first adhesive film layer 2 and the second adhesive film layer 3. The height H2 of the gap is the step between the thickness H of the composite multifunctional combination layer 6 and the thickness H3 of the second adhesive film layer 3. Due to the existence of this step H2, the side of the first adhesive film layer 2 during the sandwiching process is not supported by the second adhesive film layer 3, and the composite multifunctional material layer 6 can be pressed, which is advantageous for further stretching the composite multifunctional material layer 6, thereby avoiding the occurrence of wrinkles or wavy phenomena on 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 glass plates made of organic glass or inorganic glass, and are double curvature glasses having 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 FIG. 5, the composite multi-functional glass of this embodiment differs from that of the embodiment in the following points.

[0044] The first glass plate 1 is a single glass plate made of organic glass or inorganic glass, and the second glass layer 5 is a two-ply laminated glass plate, and both the first glass plate 1 and the second glass layer 5 are double curvature glass having a double curvature of 3000 mm. The first glass plate 1 may also be a two-ply 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 Fig. 1, the composite multifunctional glass includes 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, which are laminated from the top. 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 the entire periphery thereof, which is equal to or nearly equal to the thickness H of the composite multifunctional glass.

[0048] Here, S1 / S2=0.4, which satisfies S1 / S2≦0.5, and the second adhesive film layer 3 is not installed. The thickness H of the composite multifunctional 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 void around the composite multifunctional combination layer 6 is 0.1 mm.

[0049] The double curvature of the composite multifunctional glass product is 3000mm. The first adhesive film layer 2 directly presses the contact surface of the composite multifunctional combination layer 6, thereby smoothing out the wrinkles or wavy patterns generated in the composite multifunctional combination layer 6, and the composite multifunctional glass plate product has voids filled by the fluidity of the first adhesive film layer 2 and the third adhesive film layer 4 during the thermal processing and high pressure processing.

[0050] In this embodiment, the first glass plate 1 is a single glass plate made of organic glass or inorganic glass, the second glass layer 5 is a two-ply laminated glass plate, and the first glass plate 1 and the second glass layer 5 are both 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 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, which are laminated from the top.

[0052] The area S1 of the composite multifunctional combination layer 6 is smaller than the area S2 of the composite multifunctional glass, and an empty space that coincides with or substantially coincides with its thickness H is formed throughout the periphery thereof.

[0053] Here, S1 / S2 = 0.6, 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 0.76 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 multifunctional combination layer 6 in the empty space. One surface of the second adhesive film layer 3 contacts the third adhesive film layer 4, and a gap with a height of H2 is formed between the other surface and the first adhesive film layer 2. The width of the second adhesive film layer 3 coincides with the width of the empty space (i.e., fills this empty space in the planar dimensions 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 multifunctional glass product is 2800 mm. Here, the second adhesive film layer 3 is located throughout the periphery of 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, a gap with a height of H2 is formed after the sandwich lamination. In the hot processing process, by the first adhesive film layer 2 contacting and pressing the composite multifunctional combination layer 6, wrinkles or wavy patterns that may occur on the curved surface of the composite multifunctional 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 during the hot processing and high-pressure processing, the gap between the first adhesive film layer 2 and the second adhesive film layer 3 can be filled to obtain a final good product.

[0057] In this embodiment, the first glass plate 1 and the second glass plate 5 are both single - plate glass plates made of organic glass or inorganic glass, and are both 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).

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

[0059] S1 / S2 = 0.9, the thickness H of the composite multifunctional combination layer 6 is 0.9 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.

[0060] When 0.5 < S1 / S2 < 0.98 is satisfied, and H ≥ 0.15 mm, and the thickness H3 of the second adhesive film layer satisfies 0 < H3 ≤ H(S1 / S2 + 0.2), then H3 ≤ 0.99 mm, preferably H3 = 0.9 mm, and the height H2 of the gap between the first adhesive film layer 2 and the second adhesive film layer 3 is 0 mm, 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 3300 mm. 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 by a certain area.

[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 in the void.

[0066] When the thickness H3 of the second adhesive film layer satisfies 0 < H3 ≤ H(S1 / S2 + 0.2), then 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 cavity of 0.1 mm is formed between the composite multifunctional combination layer 6 and the first adhesive film layer 2. 2 Due to the formation of this cavity, after the composite multifunctional layer 6 is sandwich laminated, in the process of the glass product being evacuated and pressurized from the outside, the composite multifunctional layer has 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 Pane 2 First adhesive film layer 3 Second adhesive film layer 4 Third adhesive film layer 5 Second Glass Pane 6. Composite multi-functional combination layer S1 Area of ​​composite multi-functional combination layer 6 S2 Area of ​​composite multi-functional glass H Thickness of composite multifunctional 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 multifunctional combination layer 6 H3 Thickness of second adhesive film layer 3 H4 Thickness of 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 that order, The area of ​​the composite multifunctional combination layer (6) is smaller than the area of ​​the composite multifunctional glass, and a void is formed around the entire periphery of the composite multifunctional combination layer (6). A second adhesive film layer (3) is provided adjacent to the peripheral cross section of the composite multifunctional combination layer (6) in the void, 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). A composite multi-functional glass.

2. 2. The composite multifunctional glass according to claim 1, characterized in that the area of ​​the composite multifunctional combination layer (6) is 0.6-0.9 times the area of ​​the composite multifunctional glass.

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<H.

4. The composite multifunctional glass according to claim 1, characterized in that 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.

5. The composite multifunctional glass according to claim 3 or 4, characterized in that the thickness H of the composite multifunctional combination layer (6) satisfies 0.1 mm≦H≦1.2 mm.

6. The composite multifunctional glass according to claim 1, characterized in that 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.

7. 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.

8. 8. The composite multi-functional glass according to claim 7, characterized in that the radius of curvature of the double curvature glass pane is ≧2200 mm.

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

10. 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 that 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 of the composite multifunctional combination layer (6). 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. If S1 / S2≦0.5 and / or H<0.15 mm is satisfied (where H is the thickness of the composite multifunctional combination layer (6)), H3=0; In the case where 0.5<S1 / S2<0.98 and H≧0.15 mm are satisfied, 0<H3≦H(S1 / S2+0.2) is satisfied. A composite multi-functional glass.

11. When 0.5<S1 / S2<0.98 and H≧0.15 mm are 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).

11. A composite multifunctional glass according to claim 10.

12. The composite multifunctional glass according to claim 10, characterized in that, when 0.5<S1 / S2<0.98 and H≧0.15 mm are satisfied, the thickness H3 of the second adhesive film layer (3)=H.

13. When 0.5<S1 / S2<0.98 and H≧0.15mm are satisfied, the thickness H3 of the second adhesive film layer (3) further satisfies H3>H, and a cavity is formed between the composite multi-functional combination layer (6) and the first adhesive film layer (2); 11. A composite multifunctional glass according to claim 10.

14. The composite multifunctional glass according to claim 10, characterized in that the thickness H of the composite multifunctional combination layer (6) satisfies 0.08 mm≦H≦1.2 mm.

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

16. The composite multifunctional glass according to claim 10, characterized in that the thickness of the third adhesive film layer (4) is between 0.38 mm and 0.76 mm.

17. 11. The composite multifunctional glass according to claim 10, 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.

18. 11. The composite multifunctional glass according to claim 10, characterized in that the composite multifunctional combination layer (6) is an optically functional element.

19. A vehicle glazing comprising a composite multifunctional glazing according to any one of the preceding claims.

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