Laminated glass, method for manufacturing the same, and vehicle

Abstract

The application provides a kind of laminated glass and its manufacturing method, vehicle.The laminated glass includes: first glass layer, second glass layer, adhesive layer, heating layer and filling layer.The adhesive layer is provided with filling hole, and the filling layer is filled in the filling hole.The heating layer includes substrate and heating part, and the heating part is arranged on the substrate and is fixedly connected with the substrate;The substrate is attached to and covers the surface of the filling layer.Both the first glass layer and the second glass layer are curved, and the first glass layer and the second glass layer are respectively laminated on the opposite two surfaces of the adhesive layer and cover the heating layer, and the first glass layer and the second glass layer are fixedly connected with the adhesive layer, and the filling layer and the heating layer are both located between the second glass layer and the first glass layer.The laminated glass provided by the application can solve the technical problems that the laminated glass is prone to curling when directly attached to the heating element in the prior art and is prone to wrinkle after high-pressure pressing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass, in particular to a laminated glass, a manufacturing method thereof and a vehicle. BACKGROUND

[0002] With the rapid development of the automobile industry, consumers have increasingly high requirements for the safe driving performance of automobiles. The existing automobile glass heating technology is generally used to solve the problem of glass surface fogging and frosting. However, heating the entire surface of the glass will increase the manufacturing cost of the glass, and therefore, in order to reduce the cost, a glass product that is only locally heated has appeared.

[0003] For the glass product that is locally heated, the size of the heating component is much smaller than the size of the entire surface of the glass. For the heating component that is directly bonded to the local bonding layer of the laminated glass, it not only causes inconvenience in the operation of laminating the laminated glass and affects the laminating efficiency, but also the area where the heating component is located is prone to wrinkles during the high-pressure lamination process, which affects the optical effect of the local glass. SUMMARY

[0004] The present application provides a laminated glass, a manufacturing method thereof and a vehicle to solve the technical problems that the laminated glass is prone to curling when directly bonded to the heating component and is prone to wrinkles after high-pressure lamination in the prior art.

[0005] In a first aspect, the present application provides a laminated glass, comprising: a first glass layer, a second glass layer, a bonding layer, a heating layer and a filling layer.

[0006] The first glass layer and the second glass layer are both curved in shape, and the bonding layer is arranged between the first glass layer and the second glass layer.

[0007] The bonding layer is provided with a filling hole.

[0008] The heating layer comprises a substrate and a heating portion, the heating portion is fixedly arranged on one surface of the substrate, and the other surface of the substrate is bonded to and covers the surface of the filling layer.

[0009] The heating layer and the filling layer are fixedly bonded to each other to form a pre-bonding structure, the pre-bonding structure is filled in the filling hole, and the pre-bonding structure is fixedly connected with the bonding layer.

[0010] The softening temperature of the substrate is greater than the softening temperature of the filling layer, and the softening temperature of the substrate is greater than the softening temperature of the bonding layer.

[0011] In an embodiment, the laminated glass comprises a signal transmission area, and a normal projection of the heating layer on the laminated glass is at least partially located in the signal transmission area.

[0012] In one embodiment, the adhesive layer is one layer, the adhesive layer comprises a first adhesive surface and a second adhesive surface, the first adhesive surface and the second adhesive surface are oppositely arranged, the filling hole penetrates through the first adhesive surface and the second adhesive surface, the surface of the first glass layer is attached to the first adhesive surface, and the surface of the second glass layer is attached to the second adhesive surface.

[0013] In one embodiment, the adhesive layer comprises a first adhesive layer and a second adhesive layer which are stacked with each other, the first adhesive layer is stacked on the surface of the first glass layer, the second adhesive layer is arranged between the first adhesive layer and the second glass layer, and the filling hole is arranged on the first adhesive layer or the second adhesive layer.

[0014] In one embodiment, the material of the filling layer and the adhesive layer is selected from at least one of PVB, EVA, and SGP, and the material of the substrate is selected from at least one of PET, PC, PP, PMMA, and PEN.

[0015] In one embodiment, the ratio between the thickness of the filling layer and the depth of the filling hole is 0.95-1.05.

[0016] In one embodiment, the ratio between the surface area of the filling layer and the surface area of the heating layer is 100%-110%.

[0017] In one embodiment, the filling layer is fusedly connected with the adhesive layer at 100-150℃.

[0018] In one embodiment, the thickness of the heating layer is 20-50μm.

[0019] In one embodiment, the heating part is a structured metal mesh, the structured metal mesh comprises metal wires, and the wire diameter of the metal wires is less than 10μm.

[0020] In one embodiment, the ratio between the thickness of the heating layer and the thickness of the filling layer is 0.03-0.14.

[0021] In one embodiment, the heating layer comprises a busbar and a lead, the busbar is electrically connected with the heating part, one end of the lead is electrically connected with the busbar, and the other end of the lead is used for electrically connecting with an external power supply.

[0022] In a second aspect, the application provides a manufacturing method of laminated glass, the manufacturing method comprises:

[0023] providing a first glass layer with a curved shape;

[0024] providing a base adhesive layer, placing the base adhesive layer on a surface of the first glass layer, and forming the adhesive layer by opening a filling hole on the base adhesive layer;

[0025] providing a heating layer and a filling layer, laminating the heating layer on a surface of the filling layer to form a pre-adhesion structure, and filling the pre-adhesion structure into the filling hole, wherein the heating layer comprises a substrate and a heating part laminated on a surface of the substrate away from the filling layer;

[0026] providing a second glass layer matching the curvature of the first glass layer, laminating the second glass layer on a side of the adhesive layer away from the first glass layer, and covering the pre-adhesion structure with the second glass layer to obtain the laminated glass.

[0027] In one embodiment, the step of "laminating the heating layer on a surface of the filling layer to form a pre-adhesion structure" comprises:

[0028] forming an adhesive liquid on a surface of the filling layer or the heating layer;

[0029] placing the heating layer on the surface of the filling layer, the adhesive liquid on the surface of the filling layer or the heating layer being located between the filling layer and the heating layer, and pressing the heating layer with a roller to pre-adhere the heating layer to the filling layer to obtain the pre-adhesion structure.

[0030] In one embodiment, a surface of the heating layer close to the filling layer is provided with a protective film, and the step of "placing the heating layer on the surface of the filling layer, the adhesive liquid on the surface of the filling layer or the heating layer being located between the filling layer and the heating layer, and pressing the heating layer with a roller" comprises:

[0031] partially separating the protective film from the heating layer from one side of the heating layer;

[0032] placing the part of the heating layer separated from the protective film on the surface of the filling layer formed with the adhesive liquid;

[0033] pressing the heating layer with the roller while separating the remaining part of the protective film from the heating layer to pre-adhere the heating layer to the filling layer to obtain the pre-adhesion structure;

[0034] wherein the pressing direction of the roller is consistent with the separating direction of the protective film.

[0035] In one embodiment, the step of "providing a base adhesive layer, placing the base adhesive layer on a surface of the first glass layer, and forming the adhesive layer by opening a filling hole on the base adhesive layer" comprises:

[0036] The base adhesive layer comprises a first base adhesive layer and a second base adhesive layer, the first base adhesive layer and the second base adhesive layer are arranged in a stack, the filling hole is formed on the first base adhesive layer or the second base adhesive layer.

[0037] In a third aspect, the application provides a vehicle, comprising a vehicle body and the laminated glass.

[0038] In summary, in the application, by arranging the heating layer on the surface of the filling layer and then filling the filling hole in the adhesive layer, the heating layer can be prevented from curling when directly attached, thereby improving the manufacturing efficiency and heating efficiency of the laminated glass. At the same time, it can also prevent the heating layer from wrinkling during high-pressure bonding, thereby improving the optical effect of the laminated glass. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0040] Figure 1 is a partial cross-sectional structure schematic diagram of the laminated glass provided by the embodiment of the application;

[0041] Figure 2 is Figure 1 is an exploded structure schematic diagram of the laminated glass shown in FIG. 1;

[0042] Figure 3 is Figure 1 is a structure schematic diagram of the laminated glass shown in FIG. 1 from another angle;

[0043] Figure 4 is a partial cross-sectional structure schematic diagram of the laminated glass provided by the second embodiment of the application;

[0044] Figure 5 is a partial cross-sectional structure schematic diagram of the laminated glass provided by the third embodiment of the application;

[0045] Figure 6 is Figure 5 is an exploded structure schematic diagram of the laminated glass shown in FIG. 1;

[0046] Figure 7 is a partial cross-sectional structure schematic diagram of the laminated glass provided by the fourth embodiment of the application;

[0047] Figure 8 is a partial cross-sectional structure schematic diagram of the laminated glass provided by the fifth embodiment of the application;

[0048] Figure 9 is a partial cross-sectional structure diagram of the laminated glass provided in the sixth embodiment of the present application;

[0049] Figure 10 is a first embodiment of the manufacturing method of the laminated glass provided in the present application;

[0050] Figure 11 is a second embodiment of the manufacturing method of the laminated glass provided in the present application. DETAILED DESCRIPTION

[0051] The embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0052] The present application provides a vehicle (not shown in the figure), which comprises a laminated glass and a vehicle body. The laminated glass is installed on the vehicle body. In some embodiments, the laminated glass is the front windshield of the vehicle. In other embodiments, the laminated glass can also be the rear windshield or other glass.

[0053] Please refer to Figure 1 and Figure 2 , Figure 1 is a partial cross-sectional structure diagram of the laminated glass 100 provided in the embodiments of the present application, Figure 2 is Figure 1 is an exploded structure diagram of the laminated glass 100 shown in FIG. 1.

[0054] For ease of description, the length direction of the laminated glass 100 is defined as the X direction, the width direction is defined as the Y direction, and the thickness direction is defined as the Z direction in the present application. The X direction, the Y direction and the Z direction are perpendicular to each other.

[0055] In some embodiments, the laminated glass 100 is provided with a signal transmission area (not shown in the figure). In order to achieve better heat insulation or ultraviolet insulation effects, the laminated glass is coated with a transparent functional film layer on the surface of the glass. Such a functional film layer will have a certain influence on the signal transmission of the sensors in the vehicle, especially the optical elements. Therefore, the area of the laminated glass 100 through which the signals of the sensors such as optical elements in the vehicle are transmitted needs to be treated to remove the film. The area treated to remove the film is the signal transmission area. The area of the signal transmission area is equal to or greater than the area of the actual signal transmission area of the optical element, wherein the optical element can be a camera, a radar, etc.

[0056] The curvature of the laminated glass 100 is greater than 0. That is, the inner surface and the outer surface of the laminated glass 100 are both curved surfaces, and in some specific embodiments, the laminated glass 100 can be a curved surface shape with a single direction curvature, or a double curved surface shape with different or same curvatures in two directions (such as X direction and Z direction). The laminated glass 100 comprises a first glass layer 10, a second glass layer 20, an adhesive layer 30, a filling layer 40 and a heating layer 50. The adhesive layer 30 is provided with a filling hole 31, the filling layer 40 is filled in the filling hole 31, and is fused with the adhesive layer 30 under certain temperature and pressure to form a fixed connection. The heating layer 50 is arranged on the surface of the filling layer 40, and is fixedly adhered with the filling layer 40 to form a pre-adhesion structure before the filling layer 40 is filled into the filling hole 31. The adhesive layer 30, the filling layer 40 and the heating layer 50 are all arranged between the second glass layer 20 and the first glass layer 10. The second glass layer 20 and the first glass layer 10 are respectively arranged on the opposite two surfaces of the adhesive layer 30, and are fixedly connected with the second glass layer 20 and the first glass layer 10.

[0057] In some embodiments, by arranging the heating layer 50 through the laminated glass 100, and arranging the first glass layer 10 and the second glass layer 20 on the opposite two surfaces of the adhesive layer 30, the fixing of the heating layer 50 can be realized, so that the laminated glass 100 has a heating function at least in the signal transmission area, and the inner surface of the laminated glass is prevented from fogging and frosting. In some embodiments, by arranging the heating layer 50 on the surface of the filling layer 40, and then filling it into the filling hole 31 of the adhesive layer 30, the curling of the heating layer 50 during direct bonding can be avoided, which causes inconvenience in operation, and further avoids affecting the production efficiency of the laminated glass 100. At the same time, it can also avoid the heating layer 50 from being wrinkled during the subsequent high-pressure pressing process, which affects the optical effect of the laminated glass 100.

[0058] The first glass layer 10 comprises a first outer surface 11 and a first inner surface 12, and the first outer surface 11 and the first inner surface 12 are oppositely arranged. In some embodiments, the first outer surface 11 and the first inner surface 12 are both curved surfaces, and the curvatures of the first inner surface 12 and the first outer surface 11 are consistent with the curvature of the laminated glass 100. The second glass layer 20 comprises a second outer surface 21 and a second inner surface 22, and the second outer surface 21 and the second inner surface 22 are oppositely arranged. In some embodiments, the second outer surface 21 and the second inner surface 22 are both curved surfaces, and the curvatures of the second inner surface 22 and the second outer surface 21 are consistent with the curvature of the laminated glass 100. In some embodiments, the first glass layer 10 and the second glass layer 20 are both double curved surface structures. That is, the first glass layer 10 has two or more radii, and the second glass layer 20 has two or more radii.

[0059] In some embodiments, the first glass layer 10 can be a curved surface shape with a single direction curvature, or a double curved surface shape with different or same curvatures in two directions (e.g. X direction and Z direction). The second glass layer 20 has the same curvature as the first glass layer 10. It is understood that when the first glass layer 10 and the second glass layer 20 are both curved surface shapes with a single direction curvature, the laminated glass 100 is a single curved surface structure, and when the first glass layer 10 and the second glass layer 20 are both double curved surface shapes, the laminated glass 100 is a double curved surface structure. The inner surface of the laminated glass 100 is the first outer surface 11 of the first glass layer 10, and the outer surface of the laminated glass 100 is the second outer surface 21 of the second glass layer 20.

[0060] In some embodiments, the first glass layer 10 is an inner glass panel, and the second glass layer 20 is an outer glass panel. That is, when the laminated glass 100 is installed on a vehicle body, the second glass layer 20 faces outward, and the first glass layer 10 faces inward. In other embodiments, the first glass layer 10 can also be an outer glass panel, and the second glass layer 20 can also be an inner glass panel.

[0061] In some embodiments, the material of the bonding layer 30 is polyvinyl butyral (PVB). In other embodiments, the material of the bonding layer 30 can also be ethylene-vinyl acetate copolymer (EVA) or SGP (Surgically formed polymeric film). In some further embodiments, the material of the bonding layer 30 can be one of the above materials, or a combination of at least two of the above materials. In some embodiments, the thickness of the bonding layer 30 can be in the range of 0.38mm-0.76mm. In some specific embodiments, when the bonding layer is double-layered, the thickness of any one layer is preferably 0.38mm, and in some specific embodiments, when the bonding layer is single-layered, the thickness is preferably 0.76mm. In some embodiments, the bonding layer 30 is single-layered. The bonding layer 30 includes a first bonding surface 32 and a second bonding surface 33. The first bonding surface 32 and the second bonding surface 33 are oppositely arranged and located on opposite sides in the Z direction. The bonding layer 30 is provided with a filling hole 31. In some embodiments, the filling hole 31 penetrates the first bonding surface 32 and the second bonding surface 33. The filling hole 31 can be rectangular, square or circular, etc. The filling hole 31 is used to accommodate the filling layer 40. In other embodiments, the filling hole 31 can also penetrate the second bonding surface 33, but not the first bonding surface 32. In other embodiments, the filling hole 31 can also penetrate the first bonding surface 32, but not the second bonding surface 33.

[0062] The adhesive layer 30 has adhesive properties. The adhesive layer 30 is arranged between the first glass layer 10 and the second glass layer 20, and is used to adhere and fix the first glass layer 10 and the second glass layer 20 to the adhesive layer 30 respectively. The first adhesive surface 32 is fixedly connected to the first inner surface 12, and the second adhesive surface 33 is fixedly connected to the second inner surface 22. In some embodiments, the first adhesive surface 32 and the second adhesive surface 33 are both curved surfaces, and the curvatures of the first adhesive surface 32 and the second adhesive surface 33 are consistent with the curvature of the laminated glass 100. The normal projection of the filling hole 31 on the laminated glass 100 in the Z direction is at least partially located in the signal transmission area, so as to ensure that, after the filling layer 40 and the heating layer 50 are filled in the filling hole 31, the heating layer 50 can heat the signal transmission area.

[0063] In some embodiments, the material of the filling layer 40 can be selected from at least one of PVB, EVA or SGP. In some preferred embodiments, the material of the filling layer 40 is the same as the material of the adhesive layer 30. The filling layer 40 includes a first surface 41 and a second surface 42. The first surface 41 and the second surface 42 are oppositely arranged and located on opposite sides in the Z direction respectively. In some embodiments, the shape of the filling layer 40 is consistent with the shape of the filling hole 31, and the size of the filling layer 40 is consistent with the size of the filling hole 31. In some embodiments, the thickness of the filling layer 40 is close to the thickness of the adhesive layer 30, i.e., the ratio of the thickness of the filling layer 40 to the thickness of the adhesive layer 30 is 0.95-1.05, in other words, the ratio of the thickness of the filling layer 40 to the depth of the filling hole 31 is 0.95-1.05. In some embodiments, taking the adhesive layer 30 as 0.76 mm for example, the thickness of the filling layer 40 can be slightly greater than 0.76 mm or slightly less than 0.76 mm, and the thickness of the filling layer 40 can be in the range of 0.722 mm-0.798 mm. Taking the adhesive layer 30 as 0.38 mm for example, the thickness of the filling layer 40 can be slightly greater than 0.38 mm or slightly less than 0.38 mm, and the thickness of the filling layer 40 can be in the range of 0.361 mm-0.399 mm. Therefore, the thickness of the filling layer 40 is in the range of 0.361 mm-0.798 mm. Of course, in some preferred embodiments, the thickness of the filling layer 40 is equal to the thickness of the adhesive layer 30, or the thickness of the filling layer 40 is slightly greater than the thickness of the adhesive layer 30, i.e., the thickness of the filling layer 40 is greater than or equal to the depth of the filling hole 31.

[0064] In some embodiments, the filling layer 40 is arranged in the filling hole 31, and the side surface of the filling layer 40 is attached to the inner wall of the filling hole 31. When the thickness of the filling layer 40 is equal to the thickness of the adhesive layer 30, the first surface 41 is flush with the first adhesive surface 32, and the second surface 42 is flush with the second adhesive surface 33. Of course, there can be a small step difference between the first surface 41 and the first adhesive surface 32, and there can be a small step difference between the second surface 42 and the second adhesive surface 33. That is, the filling layer 40 can completely fill the filling hole 31, so as to avoid the gap between the filling layer 40 and the adhesive layer 30, which affects the light transmission performance of the laminated glass 100.

[0065] In some embodiments, by setting the material of the filling layer 40 to be the same as the material of the adhesive layer 30, the consistency and light transmission of the laminated glass 100 can be ensured, and the problem of inconsistent appearance and poor light transmission caused by color difference between the filling layer 40 and the adhesive layer 30 can be avoided. In some embodiments, by setting the size of the filling layer 40 to be consistent with the size of the filling hole 31, the filling layer 40 can completely fill the filling hole 31, so as to avoid the gap between the filling layer 40 and the adhesive layer 30, which affects the light transmission performance of the laminated glass 100.

[0066] Please continue to refer to Figure 1 and Figure 2 The heating layer 50 includes a substrate 51 and a heating portion 52, the heating portion 52 is fixedly arranged on one surface of the substrate 51, and the other surface of the substrate 51 is attached to and covers the surface of the filling layer 40. The substrate 51 functions to support the heating portion 52, so that the heating portion 52 can maintain its good structure and form to achieve stable and uniform heating performance, especially in the subsequent high-temperature and high-pressure environment, when the filling layer 40 and the adhesive layer 30 reach the softening temperature, the substrate 51 needs to maintain the fixed form, so as to avoid the structure of the heating portion 52 changing with the melting of the filling layer 40 and the adhesive layer 30 in the partially molten state.

[0067] The softening temperature of the substrate 51 is greater than the softening temperature of the filling layer 40, and the softening temperature of the substrate 51 is greater than the softening temperature of the bonding layer 30. The softening temperature refers to the temperature at which the substrate 51, the filling layer 40, and the bonding layer 30 of the laminated glass 100 begin to soften and melt during the high-pressure bonding process. For crystalline polymer materials of the substrate 51 or the filling layer 40 or the bonding layer 30, the softening temperature can also be the temperature at which they change from an ordered state to a disordered viscous flow state. The softening temperature of the substrate 51 is greater than the softening temperature of the filling layer 40 and the bonding layer 30, so that when the filling layer 40 and the bonding layer 30 are heated to fusion bonding during the high-pressure bonding process of the laminated glass 100, the substrate 51 can still maintain a stable solid form and thus maintain the structural stability of the heating portion 52.

[0068] The thickness of the heating layer 50 is 20-50 μm. In some specific embodiments, the thickness of the heating layer 50 can be 20 μm, 30 μm, 40 μm, 50 μm, etc. Using a thin film with a thickness of 20-50 μm as the heating layer 50 can avoid large changes in the thickness of the laminated glass 100 after the heating layer 50 is introduced, which can cause optical distortion and affect the optical performance of the laminated glass 100.

[0069] The heating portion 52 is arranged on the substrate 51 and is fixedly connected to the substrate 51. In some embodiments, the substrate 51 can be a polyethylene terephthalate (PET) film, a polycarbonate (PC) film, a polypropylene (PP) film, or a polymethyl methacrylate (PMMA) film, or a polyethylene naphthalate (PEN) film, etc. The material of the substrate 51 can be selected from at least one of the above film materials. In some preferred embodiments, the substrate 51 is a polyethylene terephthalate (PET) film. In some embodiments, the surface area of the substrate 51 is the same as the surface area of the filling layer 40. That is, the surface area of the substrate 51 projected on the second surface 42 of the filling layer 40 is the same as the area of the second surface 42 of the filling layer 40. In other embodiments, the surface area of the filling layer 40 can be 5-10% larger than the surface area of the substrate 51, i.e., the ratio between the surface area of the filling layer 40 and the surface area of the heating layer 50 is 100-110%.

[0070] In some embodiments, the filling layer 40 is fusion bonded with the adhesive layer 30 at 100-150°C. In the case that the filling layer 40 and the adhesive layer 30 are both PVB, during the high-pressure lamination process of the laminated glass 100 at 100-150°C, the filling layer 40 and the adhesive layer 30 will start to soften and melt, and then melt together at the contact surface between them, so as to improve the stability of the filling layer 40, and at the same time, the contact surface between the filling layer 40 and the adhesive layer 30 will disappear after melting, further improving the optical quality of the laminated glass 100.

[0071] In some embodiments, the heating portion 52 is a structured metal mesh. The structured metal mesh includes a plurality of metal wires arranged in a mesh shape. The metal wires can be made of copper, silver, or other metal materials. In some embodiments, the diameter of the metal wires forming the structured metal mesh is less than 10 μm, for example, 8 μm, 7 μm, 5 μm, 3 μm, etc. In addition, the metal wires can also be flat metal wires, i.e., the cross section is close to a rectangle rather than a circle, and the diameter at this time can also refer to the thickness of the metal wire in the Z direction. It should be noted that the metal wire with a diameter less than 10 μm is almost invisible to the naked eye, and the use of metal wires with a diameter less than 10 μm to form the heating portion 52 makes the heating layer 50 set on the laminated glass 100 still have good light transmittance. In some embodiments, the metal wires with a diameter of 7 μm are used to ensure that the cross-sectional area of the metal wires is large enough, so that the resistance value of the heating portion 52 is low and the heating power is large, thereby improving the heating efficiency of the heating layer 50.

[0072] In some embodiments, the ratio of the thickness of the heating layer 50 to the thickness of the filling layer 40 is 0.03-0.14. Within this thickness ratio range, the heating layer 50 can achieve a better heating effect without affecting the optical effect of the laminated glass.

[0073] In some embodiments, the heating portion 52 of the structured metal mesh is formed on the surface of the substrate 51 by nanoimprint technology. In other embodiments, the heating portion 52 of the structured metal mesh can also be formed on the surface of the substrate 51 by plating and etching technology. In some embodiments, the heating portion 52 is arranged on one surface of the substrate 51. In other embodiments, the heating portion 52 can also be arranged on the opposite two surfaces of the substrate 51.

[0074] Please refer to Figure 3 , Figure 3 is Figure 1 the structural schematic view of the laminated glass 100 from another angle.

[0075] In some embodiments, the size of the substrate 51 is larger than the size of the heating portion 52, that is, the heating portion 52 is entirely located within the substrate 51, and there is a blank area between the edge of the heating portion 52 and the edge of the substrate 51. The heating portion 52 includes a first side edge 521, a second side edge 522, a third side edge 523, and a fourth side edge 524. The first side edge 521 and the second side edge 522 are oppositely arranged and respectively located on opposite sides of the laminated glass 100 in the X direction. The second side edge 522 and the fourth side edge 524 are oppositely arranged and respectively located on opposite sides of the laminated glass 100 in the Y direction. The first side edge 521, the second side edge 522, the second side edge 522, and the fourth side edge 524 are connected end to end.

[0076] The heating layer 50 further includes a busbar 53 and a lead wire 54. The busbar 53 is a conductive silver paste or a thin flat copper conductor. The busbar 53 is electrically connected to the metal mesh and is used to collect the current of the metal mesh. One end of the lead wire 54 is electrically connected to the busbar 53, and the other end is electrically connected to an external power source. The external power source transmits current to the busbar 53 through the lead wire 54, and then transmits the current to the heating portion 52, so that the heating portion 52 generates heat. The busbar 53 includes a first busbar 531 and a second busbar 532. The first busbar 531 includes a first end 533 and a second end 534. The first busbar 531 is mounted on the surface of the substrate 51 and arranged along the first side edge 521 and the second side edge 522, and electrically connected to the heating portion 52. The first end 533 is located at one end of the first side edge 521 close to the fourth side edge 524, and the second end 534 is located at one side of the third side edge 523 and is spaced apart from the third side edge 523. The second busbar 532 includes a third end 535 and a fourth end 536. The second busbar 532 is mounted on the surface of the substrate 51 and arranged along the second side edge 522 and the third side edge 523, and electrically connected to the heating portion 52. The third end 535 is located at one end of the second side edge 522 close to the fourth side edge 524, and the fourth end 536 is located at one side of the third side edge 523 and is spaced apart from the third side edge 523. The fourth end 536 extends towards the direction of the second end 534 and is spaced apart from the second end 534. The first busbar 531 and the second busbar 532 can be fixed on the surface of the substrate 51 by printing and electrically connected to the heating layer 50.

[0077] The lead wire 54 includes a first lead wire 541 and a second lead wire 542. The first lead wire 541 and the second lead wire 542 are arranged at intervals. One end of the first lead wire 541 is fixedly and electrically connected to the second end 534 of the first bus bar 531, and the other end is electrically connected to an external power supply. One end of the second lead wire 542 is fixedly and electrically connected to the fourth end 536 of the second bus bar 532, and the other end is electrically connected to the external power supply. For example, when the end of the first lead wire 541 away from the first bus bar 531 is electrically connected to the positive electrode of the external power supply, and the end of the second lead wire 542 away from the second bus bar 532 is electrically connected to the negative electrode of the external power supply, the current of the external power supply is transmitted from the first lead wire 541 to the first bus bar 531, then transmitted from the first bus bar 531 to the heating portion 52, then transmitted from the heating portion 52 to the second bus bar 532, then transmitted from the second bus bar 532 to the second lead wire 542, and then returned to the external power supply through the negative electrode of the external power supply via the second lead wire 542, so as to realize the electrification of the heating portion 52, and make the heating portion 52 heat up under the action of the current.

[0078] The heating layer 50 is arranged on the second surface 42 of the filling layer 40 and fixedly connected to the filling layer 40. The surface of the substrate 51 away from the heating portion 52 is fixedly connected to the second surface 42 of the filling layer 40, and the heating portion 52 faces the second inner surface 22 of the second glass layer 20. The orthogonal projection of the heating layer 50 on the laminated glass 100 in the Z direction is at least partially located in the signal transmission area, so as to ensure that the heating layer 50 can heat the signal transmission area, realize the heating function of the laminated glass 100, and improve the optical performance of the laminated glass 100 in the signal transmission area. In the actual preparation process of the laminated glass 100, the adhesive layer 30 can be first adhered to the surface of the first glass layer 10, and the filling hole 31 is arranged on the adhesive layer 30; then the heating layer 50 is pre-adhered to the first surface 41 of the filling layer 40, and the heating layer 50 and the filling layer 40 are jointly arranged in the filling hole 31; then the second glass layer 20 is adhered to the second adhesive surface 33 of the adhesive layer 30; finally, the first glass layer 10, the adhesive layer 30, the filling layer 40, the heating layer 50 and the second glass layer 20 are fixedly connected by laminating to form the laminated glass 100.

[0079] In some embodiments, by adhering the heating layer 50 to the surface of the filling layer 40 and then filling it in the filling hole 31 to be fixedly connected with the adhesive layer 30, the curling of the heating layer 50 during direct lamination can be avoided, which causes inconvenience in operation and affects the production efficiency of the laminated glass 100. At the same time, the wrinkling of the heating layer 50 during high-pressure pressing can also be avoided, which affects the optical effect of the laminated glass 100.

[0080] It needs to be explained that the surface of the adhesive layer 30 is a curved surface with relatively large curvature. If the heating layer 50 is directly attached to the surface of the adhesive layer 30 without using adhesive liquid, the heating layer 50 will curl due to its very thin thickness. If the heating layer 50 is directly bonded to the surface of the adhesive layer 30 by spraying adhesive liquid, the heating layer 50 cannot be well attached to the adhesive layer 30 when the heating layer 50 is pushed by the roller, resulting in wrinkles. In some embodiments, a pre-bonding method is used, that is, the filler layer 40 is placed on the platform, and the surface of the filler layer 40 away from the platform is sprayed with adhesive liquid. The heating layer 50 is placed on the surface of the filler layer away from the platform, and the heating layer 50 is pre-bonded to the filler layer 40 by pushing the heating layer 50 with a roller, to obtain the pre-bonding structure. It needs to be noted that it is relatively easy to push the heating layer 50 and the filler layer 40 flat on the plane by the roller, so that they are closely attached without wrinkles.

[0081] Please refer to Figure 4 , Figure 4 is a partial cross-sectional structure schematic diagram of the laminated glass 100 provided by the second embodiment of the present application.

[0082] The difference between the present embodiment and the embodiment shown in Figure 1 is that in some embodiments, the heating layer 50 is arranged on the first surface 41 of the filler layer 40 and fixedly connected with the filler layer 40. The surface of the substrate 51 away from the heating part 52 is fixedly connected with the first surface 41 of the filler layer 40, and the heating part 52 faces the first inner surface 12 of the first glass layer 10.

[0083] Please refer to Figure 5 and Figure 6 , Figure 5 is a partial cross-sectional structure schematic diagram of the laminated glass 100 provided by the third embodiment of the present application, Figure 6 is Figure 5 a schematic diagram of the exploded structure of the laminated glass 100.

[0084] The difference between the present embodiment and the embodiment shown in Figure 1 is that in the present embodiment, the adhesive layer 30 has two layers. The adhesive layer 30 includes a first adhesive layer 70 and a second adhesive layer 60. The first adhesive layer 70 and the second adhesive layer 60 are arranged in a stack. The first adhesive layer 70 is bonded to the first inner surface 12 of the first glass layer 10, and the second adhesive layer 60 is bonded between the first adhesive layer 70 and the second glass layer 20.

[0085] In some embodiments, the first adhesive layer 70 has a thickness of 0.38 mm. Of course, the first adhesive layer 70 can have a thickness slightly greater than 0.38 mm or slightly less than 0.38 mm. The second adhesive layer 60 has the same material as the first adhesive layer 70 and has adhesive properties. The second adhesive layer 60 has a thickness of 0.38 mm. Of course, the second adhesive layer 60 can have a thickness slightly greater than 0.38 mm or slightly less than 0.38 mm.

[0086] The first adhesive layer 70 includes a first sub-adhesive surface 71 and a second sub-adhesive surface 72. The first sub-adhesive surface 71 and the second sub-adhesive surface 72 are oppositely arranged and located on opposite sides of the Z direction, respectively. The filling hole 31 is provided in the first adhesive layer 70 and penetrates the first sub-adhesive surface 71 and the second sub-adhesive surface 72. The second adhesive layer 60 includes a third adhesive surface 61 and a fourth adhesive surface 62. The third adhesive surface 61 and the fourth adhesive surface 62 are oppositely arranged and located on opposite sides of the Z direction, respectively. The second adhesive layer 60 is arranged in a stack with the first adhesive layer 70, and the third adhesive surface 61 is adhesively fixed to the second sub-adhesive surface 72. The filling layer 40 is filled in the filling hole 31, and the heating layer 50 is fixed to the second surface 42 of the filling hole 31 and faces the third adhesive surface 61 of the second adhesive layer 60. The first inner surface 12 of the first glass layer 10 is adhesively fixed to the first sub-adhesive surface 71 of the first adhesive layer 70, and the second inner surface 22 of the second glass layer 20 is adhesively fixed to the fourth adhesive surface 62 of the second adhesive layer 60.

[0087] In the present embodiment, by arranging two adhesive layers and arranging the heating layer 50 between the filling layer 40 and the second adhesive layer 60, the adhesion of the heating layer 50 can be increased, and the stability of the fit between the heating layer 50 and the filling layer 40 is higher, thereby improving the structural stability of the laminated glass 100. In the present embodiment, the thicknesses of the first adhesive layer 70 and the second adhesive layer 60 are both less than 0.38 mm, and the thicknesses of the first adhesive layer 70 and the second adhesive layer 60 are both greater than 0.38 mm. Figure 1 The adhesive layer 30 in the illustrated embodiment.

[0088] Please refer to Figure 7 , Figure 7 is a partial cross-sectional structure schematic diagram of the laminated glass 100 provided in the fourth embodiment of the present application.

[0089] The present embodiment is similar to Figure 5The difference in the illustrated embodiment is that, in this embodiment, the filling layer 40 fills the filling hole 31, and the heating layer 50 is fixed to the first surface 41 of the filling layer 40. The first inner surface 12 of the first glass layer 10 is bonded and fixed to the first sub-bonding surface 71 of the first adhesive layer 70, with the heating layer 50 facing the first inner surface 12 of the first glass layer 10. The second adhesive layer 60 is stacked on top of the first adhesive layer 70, and the third adhesive surface 61 is bonded and fixed to the second sub-bonding surface 72. The second inner surface 22 of the second glass layer 20 is bonded and fixed to the fourth adhesive surface 62 of the second adhesive layer 60.

[0090] Please see Figure 8 , Figure 8 This is a partial cross-sectional structural diagram of the laminated glass 100 provided in the fifth embodiment of this application.

[0091] This embodiment and Figure 5 The difference in the illustrated embodiment is that, in this embodiment, the filling hole 31 is disposed in the second adhesive layer 60 and penetrates the third adhesive surface 61 and the fourth adhesive surface 62. The third adhesive surface 61 and the fourth adhesive surface 62 are disposed opposite each other and are located on opposite sides in the Z direction. The second adhesive layer 60 is stacked with the first adhesive layer 70, and the third adhesive surface 61 is bonded and fixed to the second sub-adhesive surface 72. The filling layer 40 fills the filling hole 31, and the heating layer 50 is fixed to the first surface 41 of the filling layer 40 and faces the second sub-adhesive surface 72 of the first adhesive layer 70. The first inner surface 12 of the first glass layer 10 is bonded and fixed to the first sub-adhesive surface 71 of the first adhesive layer 70, and the second inner surface 22 of the second glass layer 20 is bonded and fixed to the fourth adhesive surface 62 of the second adhesive layer 60.

[0092] Please see Figure 9 , Figure 9 This is a partial cross-sectional structural diagram of the laminated glass 100 provided in the sixth embodiment of this application.

[0093] This embodiment and Figure 8 The difference in the illustrated embodiment is that, in this embodiment, the filling hole 31 is disposed in the second adhesive layer 60, the filling layer 40 fills the filling hole 31, and the heating layer 50 is fixed to the second surface 42 of the filling layer 40. The second inner surface 22 of the second glass layer 20 is bonded and fixed to the fourth adhesive surface 62 of the second adhesive layer 60, and the heating layer 50 faces the second inner surface 22 of the second glass layer 20. The second adhesive layer 60 and the first adhesive layer 70 are stacked, and the third adhesive surface 61 is bonded and fixed to the second sub-adhesive surface 72. The first inner surface 12 of the first glass layer 10 is bonded and fixed to the first sub-adhesive surface 71 of the first adhesive layer 70.

[0094] Please see Figure 10 , Figure 10is a first embodiment of the method for manufacturing the laminated glass 100 provided by the present application, which is used for manufacturing Figure 1 the laminated glass 100 shown in the drawings.

[0095] Figure 10 The manufacturing method shown in the drawings comprises:

[0096] S1: providing a first glass layer 10, the first glass layer 10 having a curved surface shape;

[0097] S2: providing a base adhesive layer, the base adhesive layer being arranged on the surface of the first glass layer 10, and a filling hole 31 being formed on the base adhesive layer to form an adhesive layer 30;

[0098] S3: providing a heating layer 50 and a filling layer 40, the heating layer 50 being stacked on the surface of the filling layer 40 to form a pre-adhesion structure, and then the pre-adhesion structure being filled into the filling hole 31, wherein the heating layer 50 comprises a base material 51 and a heating part 52, and the heating part 52 is stacked on the surface of the base material 51 away from the filling layer 40;

[0099] S4: providing a second glass layer 20 matched with the curvature of the first glass layer 10, the second glass layer 20 being stacked on the side of the adhesive layer 30 away from the first glass layer 10, and the second glass layer 20 covering the pre-adhesion structure to obtain a stacking structure;

[0100] S5: laminating the stacking structure in S4 to obtain the laminated glass 100.

[0101] Please refer to Figure 1 and Figure 2 In S1, the first glass layer 10 comprises a first outer surface 11 and a first inner surface 12, and the first outer surface 11 and the first inner surface 12 are oppositely arranged. The first glass layer 10 is a curved glass plate. Both the first outer surface 11 and the first inner surface 12 are curved. In this embodiment, the first glass layer 10 is an inner glass plate. That is, when the laminated glass 100 is installed on a vehicle body, the first glass layer 10 faces the inside of the vehicle.

[0102] S2 comprises:

[0103] (1) providing a base adhesive layer, the base adhesive layer being adhered to the surface of the first glass layer 10;

[0104] (2) forming a filling hole 31 on the base adhesive layer to form an adhesive layer 30.

[0105] In step (1) of S2, the material of the base adhesive layer is PVB. Alternatively, the material of the base adhesive layer can be EVA, SGP or other material with adhesive property. In this embodiment, the thickness of the base adhesive layer is 0.76 mm. In other embodiments, the thickness of the base adhesive layer can be slightly larger than 0.76 mm or slightly smaller than 0.76 mm. It is noted that the "base adhesive layer" as referred to herein is the adhesive layer 30 without the hole.

[0106] In step (2) of S2, the filling hole 31 is arranged opposite to the signal transmission area of the laminated glass 100. The filling hole 31 at least partially covers the signal transmission area in the orthographic projection of the laminated glass 100. The adhesive layer 30 comprises a first adhesive surface 32 and a second adhesive surface 33 arranged opposite to each other. The first adhesive surface 32 is fixedly connected to the first inner surface 12.

[0107] S3 comprises:

[0108] (1) providing a filling layer 40;

[0109] (2) providing a heating layer 50, the heating layer 50 comprising a substrate 51 and a heating portion 52, the heating portion 52 being arranged on the surface of the substrate 51;

[0110] (3) bonding the heating layer 50 to the surface of the filling layer 40, the surface of the substrate 51 opposite to the heating portion 52 being fixedly connected to the surface of the filling layer 40, to obtain a pre-bonding structure;

[0111] (4) filling the pre-bonding structure into the filling hole 31.

[0112] In step (1) of S3, the material of the filling layer 40 is the same as that of the adhesive layer 30. The shape and size of the filling layer 40 are consistent with those of the filling hole 31. Moreover, the thickness of the filling layer 40 is the same as that of the adhesive layer 30. In this embodiment, the thickness of the filling layer 40 is 0.76 mm. The filling layer 40 comprises a first surface 41 and a second surface 42 arranged opposite to each other.

[0113] In step (2) of S3, the heating layer 50 comprises a substrate 51 and a heating portion 52. In this embodiment, the substrate 51 is a PET film. The heating portion 52 is a structured metal mesh. The heating portion 52 of the structured metal mesh is formed on the surface of the substrate 51 by nanoimprint technology.

[0114] In step (3) of S3, when bonding the heating layer 50 to the surface of the filling layer 40, first, the filling layer 40 is placed on a platform, and the second surface 42 of the filling layer 40 faces away from the platform; then, a layer of bonding liquid is formed on the second surface 42 of the filling layer 40 or the side surface of the heating layer 50 close to the second surface 42; next, the heating layer 50 is placed on the second surface 42, and the surface of the heating layer 50 facing away from the heating part 52 faces the second surface 42, and a roller is used to push the heating layer 50 in one direction to pre-bond the heating layer 50 and the filling layer 40, and a pre-bonding structure is obtained. In this embodiment, the bonding liquid is anhydrous ethanol. In other embodiments, the bonding liquid can also be other liquids, and in some specific embodiments, the bonding liquid can be formed by spraying or smearing, or can be formed by other methods such as soaking, and the present application does not make specific limitations in this regard.

[0115] In this embodiment, the second surface 42 of the filling layer 40 is sprayed with the bonding liquid before bonding, which can increase the bonding force between the filling layer 40 and the heating layer 50. In addition, anhydrous ethanol is used as the bonding liquid, which is easy to volatilize after bonding, and can avoid the generation of bubbles between the filling layer 40 and the heating layer 50.

[0116] In this embodiment, the side surface of the heating layer 50 close to the filling layer 40 is provided with a protective film, and the bonding liquid is formed on the second surface 42 of the filling layer 40. The specific bonding process of the heating layer 50 and the filling layer 40 is as follows: the protective film is partially separated from the heating layer 50 from one side of the heating layer 50; the part of the heating layer 50 separated from the protective film is placed on the surface of the filling layer 40 where the bonding liquid is formed; the heating layer 50 is pre-bonded with the filling layer 40 by pushing the heating layer 50 with a roller while separating the remaining part of the protective film from the heating layer 50, and a pre-bonding structure is obtained; wherein the pushing direction of the roller is consistent with the separation direction of the protective film.

[0117] In some embodiments, before pre-bonding, a protective film can be attached to the heating layer 50 on both opposite surfaces to protect the heating layer 50. In the pre-bonding process, the protective film on the surface facing away from the heating part 52 is first removed, and then the heating layer 50 is pre-bonded with the filling layer 40 by pushing the protective film on the surface bonded to the heating part 52 with a roller, and then the protective film bonded to the surface of the heating part 52 is removed to obtain a pre-bonding structure. In this embodiment, by providing a protective film, the heating layer 50 can be protected from frictional damage to the heating part 52 caused by the roller during pushing, which affects the heating performance of the heating layer 50.

[0118] In another embodiment, a protective film can also be attached to the surface of the heating layer 50 opposite to the heating portion 52. In the pre-bonding process, the protective film is first removed, and then a roller is used to press the surface of the heating layer 50, so that the heating layer 50 is pre-bonded with the filling layer 40 to obtain a pre-bonding structure.

[0119] In step (4) of S3, the size of the pre-bonding structure is approximately the same as the size of the filling hole 31, and the pre-bonding structure is arranged opposite to the signal transmission area of the laminated glass 100, thereby providing heat to the signal transmission area of the laminated glass 100.

[0120] In S4, the second glass layer 20 includes a second outer surface 21 and a second inner surface 22, and the second outer surface 21 and the second inner surface 22 are arranged opposite to each other. The second glass layer 20 is a curved glass plate, and the curvature of the second glass layer 20 is adapted to the curvature of the first glass layer 10. Of course, the curvature of the second glass layer 20 can also have a slight difference from the curvature of the first glass layer 10. In this embodiment, the second glass layer 20 is an outer glass plate. That is, when the laminated glass 100 is installed on a vehicle body, the second glass layer 20 faces outward.

[0121] In the process of attaching the second glass layer 20, the second glass layer 20 is first arranged on the surface of the bonding layer 30 opposite to the first glass layer 10, the second inner surface 22 faces the second bonding surface 33 and is attached to the second bonding surface 33, and the second glass layer 20 covers the heating layer 50 and the filling layer 40. The first glass layer 10, the bonding layer 30, the filling layer 40, the heating layer 50, and the second glass layer 20 together form a stacked structure.

[0122] In S5, the stacked structure is pressed by a laminating process to form the laminated glass 100.

[0123] It should be noted that after the laminating process, the adhesive liquid in step (3) of S3 volatilizes, the heating layer 50 is located between the filling layer 40 and the first glass layer 10, and the bonding layer formed by the filling layer 40 and the bonding layer 30 fixes the heating layer 50 between the filling layer 40 and the first glass layer 10, thereby realizing fixed bonding of the heating layer 50 and improving the structural stability of the heating layer 50.

[0124] In addition, the laminated glass 100 after the laminating process can be further subjected to high-pressure bonding under a high-temperature and high-pressure environment, so that the filling layer 40 and the bonding layer 30 are bonded and fixed, and can be regarded as an integral bonding layer. The working temperature of the high-pressure bonding of the laminated glass 100 is generally in the temperature range of 100°C-150°C, at which the filling layer 40 is fused and connected with the bonding layer 30.

[0125] In the present embodiment, the heating layer 50 is first arranged on the surface of the filling layer 40 to form a pre-bonding structure, and then the pre-bonding structure is filled into the filling hole 31 formed by the bonding layer 30, so that the heating layer 50 is prevented from being curled when directly attached, which is inconvenient for operation and affects the production efficiency of the laminated glass 100. At the same time, the heating layer 50 is also prevented from being wrinkled during high-pressure pressing, which affects the optical effect of the laminated glass 100.

[0126] In the present embodiment, the pre-bonding method is adopted, that is, the filling layer 40 is first placed on a platform, and the bonding liquid is sprayed on the surface of the filling layer 40 away from the platform. Then, the heating layer 50 is placed on the surface of the filling layer 40 away from the platform, and the heating layer 50 is pre-bonded with the filling layer 40 by using a roller to push the heating layer 50, so as to obtain a pre-bonding structure. It should be noted that the surface of the bonding layer 30 is a curved surface with relatively large curvature. If the heating layer 50 is directly attached to the surface of the bonding layer 30 without using the bonding liquid, the heating layer 50 will be curled due to its very thin thickness. If the heating layer 50 is directly bonded with the bonding layer 30 by spraying the bonding liquid on the surface of the bonding layer 30, the heating layer 50 cannot be well attached to the bonding layer 30 when the heating layer 50 is pushed by the roller, which results in wrinkles. In some embodiments, the pre-bonding method is adopted, that is, the filling layer 40 is first placed on a platform, and the bonding liquid is sprayed on the surface of the filling layer 40 away from the platform. The heating layer 50 is placed on the surface of the filling layer 40 away from the platform, and the heating layer 50 is pre-bonded with the filling layer 40 by using a roller to push the heating layer 50, so as to obtain the pre-bonding structure. It should be noted that it is relatively easy to push the heating layer 50 and the filling layer 40 flat on a flat surface by using a roller, so that the two are closely attached and wrinkles are not generated.

[0127] In one embodiment, the heating layer 50 can also be bonded to the first surface 41 of the filling layer 40. The surface of the substrate 51 away from the heating part 52 is fixedly connected to the first surface 41 of the filling layer 40, and the heating part 52 faces the first inner surface 12 of the first glass layer 10.

[0128] Please refer to Figure 11 , Figure 11 is a second embodiment of the method for manufacturing the laminated glass 100 provided by the present application, which is used for manufacturing Figure 5 the laminated glass 100 shown in FIG. 1.

[0129] Figure 11 The manufacturing method comprises the following steps:

[0130] S1’: providing a first glass layer 10, the surface of the first glass layer 10 being a curved surface;

[0131] S2': providing a base adhesive layer, the base adhesive layer including a first base adhesive layer and a second base adhesive layer, the first base adhesive layer being provided on a surface of the first glass layer 10, the first base adhesive layer having a filling hole 31 formed therein, and the first adhesive layer 70 being formed;

[0132] S3': providing a heating layer 50 and a filling layer 40, the heating layer 50 being laminated on a surface of the filling layer 40 to form a pre-adhesion structure, and then the pre-adhesion structure being filled into the filling hole 31, wherein the heating layer 50 includes a base material 51 and a heating portion 52, and the heating portion 52 is laminated on a surface of the base material 51 away from the filling layer 40;

[0133] S4': laminating the second base adhesive layer on a surface of the first adhesive layer 70 away from the first glass layer 10 to form a second adhesive layer, and the second adhesive layer 60 covering the pre-adhesion structure;

[0134] S5': providing a second glass layer 20 matching the curvature of the first glass layer 10, and laminating the second glass layer 20 on a surface of the second adhesive layer 60 away from the first glass layer 10 to form a stacking structure;

[0135] S6': laminating the stacking structure in S5' to form the laminated glass 100.

[0136] In the embodiment, S1' is the same as S1 in the embodiment shown in Figure 10 , and S3' is the same as S3 in the embodiment shown in Figure 10 .

[0137] In the embodiment, S2' is the same as S2 in the embodiment shown in Figure 5 and Figure 6 , and the thickness of the first base adhesive layer and the second base adhesive layer is 0.38 mm. In other embodiments, the thickness of the first base adhesive layer can be slightly greater than 0.38 mm or slightly less than 0.38 mm. That is, the thickness of the first adhesive layer 70 is 0.38 mm. The thickness of the second base adhesive layer can also be slightly greater than 0.38 mm or slightly less than 0.38 mm. The first adhesive layer 70 includes a first sub-adhesive surface 71 and a second sub-adhesive surface 72. The first sub-adhesive surface 71 and the second sub-adhesive surface 72 are oppositely arranged and located on opposite sides in the Z direction, respectively.

[0138] In S4', the material of the second adhesive layer 60 is the same as that of the first adhesive layer 70, and the second adhesive layer 60 has adhesive properties. The second adhesive layer 60 includes a third adhesive surface 61 and a fourth adhesive surface 62 oppositely arranged. After the second adhesive layer 60 is laminated on the first adhesive layer 70, the third adhesive surface 61 is adhesively fixed with the second sub-adhesive surface 72, the heating layer 50 is located between the filling layer 40 and the second adhesive layer 60, and the heating portion 52 faces the third adhesive surface 61.

[0139] In S5', when bonding the second glass layer 20, the second glass layer 20 is first arranged on the surface of the second adhesive layer 60 facing away from the first glass layer 10, the second inner surface 22 faces the fourth adhesive surface 62 and is bonded to the fourth adhesive surface 62, and the second glass layer 20 covers the heating layer 50 and the filling layer 40. The first glass layer 10, the first adhesive layer 70, the second adhesive layer 60, the filling layer 40, the heating layer 50, and the second glass layer 20 together form a stacked structure.

[0140] In S6', the stacked structure is pressed by lamination to form the laminated glass 100.

[0141] In the present embodiment, by arranging two adhesive layers and arranging the second adhesive layer 60 between the first adhesive layer 70 and the second glass layer 20, and arranging the heating layer 50 between the filling layer 40 and the second adhesive layer 60, the bonding degree between the heating layer 50 and the filling layer 40 can be increased, the bonding stability between the heating layer 50 and the filling layer 40 is higher, and thus the bonding force of the heating layer 50 can be increased. In the present embodiment, the thicknesses of the first adhesive layer 70 and the second adhesive layer 60 are both less than Figure 6 the thickness of the adhesive layer 30 in the embodiment shown.

[0142] In addition, the laminated glass 100 after lamination can be further subjected to high-pressure bonding under high temperature and high pressure, so that the first adhesive layer 70 and the second adhesive layer 60 and the filling layer 40 are bonded and fixed, and can be regarded as an integral adhesive layer. The working temperature of the high-pressure bonding of the laminated glass 100 is generally in the temperature range of 100-150°C, at which the first adhesive layer 70 and the second adhesive layer 60 and the filling layer 40 are fused and connected.

[0143] The present application provides a third embodiment of a method for manufacturing a laminated glass 100 for manufacturing the laminated glass 100 shown. Figure 7 The present application provides a third embodiment of a method for manufacturing a laminated glass 100 for manufacturing the laminated glass 100 shown. Figure 11 The difference between the present embodiment and the embodiment shown is that, in the present embodiment, the heating layer 50 is bonded to the first surface 41 of the filling layer 40. The surface of the substrate 51 facing away from the heating portion 52 is fixedly connected to the first surface 41 of the filling layer 40, and the heating portion 52 faces the first inner surface 12 of the first glass layer 10.

[0144] The present application provides a fourth embodiment of a method for manufacturing a laminated glass 100 for manufacturing the laminated glass 100 shown. Figure 8 The present application provides a fourth embodiment of a method for manufacturing a laminated glass 100 for manufacturing the laminated glass 100 shown. Figure 11The difference between the embodiment shown and the previous embodiment is that, in the embodiment shown, the filling hole 31 is formed in the second adhesive layer 60 and penetrates the third adhesive surface 61 and the fourth adhesive surface 62. The heating layer 50 is laminated to the first surface 41 of the filling layer 40 to form a pre-adhesion structure, the pre-adhesion structure is filled in the filling hole 31, and the heating layer 50 faces the second sub-adhesive surface 72 of the first adhesive layer 70. The first inner surface 12 of the first glass layer 10 is adhered to the first sub-adhesive surface 71 of the first adhesive layer 70, and the second inner surface 22 of the second glass layer 20 is adhered to the fourth adhesive surface 62 of the second adhesive layer 60.

[0145] The present application provides a fifth embodiment of a method for manufacturing a laminated glass 100 for manufacturing the laminated glass 100 shown. Figure 9 The difference between the embodiment shown and the previous embodiment is that, in the embodiment shown, the filling hole 31 is formed in the second adhesive layer 60 and penetrates the third adhesive surface 61 and the fourth adhesive surface 62. The heating layer 50 is laminated to the first surface 41 of the filling layer 40 to form a pre-adhesion structure, the pre-adhesion structure is filled in the filling hole 31, and the heating layer 50 faces the second sub-adhesive surface 72 of the first adhesive layer 70. The first inner surface 12 of the first glass layer 10 is adhered to the first sub-adhesive surface 71 of the first adhesive layer 70, and the second inner surface 22 of the second glass layer 20 is adhered to the fourth adhesive surface 62 of the second adhesive layer 60.

[0146] The above describes the embodiments of the present application in detail, and the principles and implementation manners of the present application are described by applying specific examples. The above embodiment descriptions are only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A laminated glass, characterized by, The laminated glass comprises a first glass layer, a second glass layer, an adhesive layer, a heating layer and a filling layer; The first glass layer and the second glass layer are both in a curved shape, and the adhesive layer is arranged between the first glass layer and the second glass layer; The adhesive layer is provided with a filling hole; The heating layer comprises a base material and a heating part, the heating part is fixed on one surface of the base material, and the other surface of the base material is attached to and covers the surface of the filling layer; The heating layer and the filling layer are fixedly connected to each other to form a pre-adhesion structure, the pre-adhesion structure is filled in the filling hole and is fixedly connected with the adhesive layer; The softening temperature of the base material is higher than the softening temperature of the filling layer, and the softening temperature of the base material is higher than the softening temperature of the adhesive layer.

2. The laminated glass according to claim 1, characterized by The laminated glass comprises a signal transmission area, and a normal projection of the heating layer on the laminated glass is at least partially located in the signal transmission area.

3. The laminated glass according to claim 1, characterized by The adhesive layer is one layer, the adhesive layer comprises a first adhesive surface and a second adhesive surface, the first adhesive surface and the second adhesive surface are oppositely arranged, the filling hole penetrates through the first adhesive surface and the second adhesive surface, the surface of the first glass layer is attached to the first adhesive surface, and the surface of the second glass layer is attached to the second adhesive surface.

4. The laminated glass according to claim 1, characterized by The adhesive layer comprises a first adhesive layer and a second adhesive layer which are stacked with each other, the first adhesive layer is stacked on the surface of the first glass layer, the second adhesive layer is arranged between the first adhesive layer and the second glass layer, and the filling hole is arranged on the first adhesive layer or the second adhesive layer.

5. Laminated glass according to any one of claims 1 to 4, characterized in that The material of the filling layer and the adhesive layer is selected from at least one of PVB, EVA and SGP, and the material of the base material is selected from at least one of PET, PC, PP, PMMA and PEN.

6. Laminated glass according to any one of claims 1 to 4, characterized in that The ratio between the thickness of the filling layer and the depth of the filling hole is 0.95-1.

05.

7. Laminated glass according to any one of claims 1 to 4, characterized in that The ratio between the surface area of the filling layer and the surface area of the heating layer is 100%-110%.

8. Laminated glass according to any one of claims 1 to 4, characterized in that The surface of the filling layer is fusedly connected with the adhesive layer at 100-150℃.

9. Laminated glass according to any one of claims 1 to 4, characterized in that The thickness of the heating layer is 20-50μm.

10. Laminated glass according to any one of claims 1 to 4, characterized in that The heating part is a structured metal mesh, the structured metal mesh comprises metal wires, and the wire diameter of the metal wires is less than 10μm.

11. Laminated glass according to any one of claims 1 to 4, characterized in that The ratio between the thickness of the heating layer and the thickness of the filling layer is 0.03-0.

14.

12. Laminated glass according to any one of claims 1 to 4, characterized in that The heating layer comprises a busbar and a lead, the busbar is electrically connected with the heating part, one end of the lead is electrically connected with the busbar, and the other end of the lead is used for being electrically connected with an external power supply.

13. A method of manufacturing a laminated glass, characterized by, The manufacturing method comprises: providing a first glass layer with a curved shape; providing a basic adhesive layer, arranging the basic adhesive layer on the surface of the first glass layer, opening a filling hole on the basic adhesive layer, and forming an adhesive layer; providing a heating layer and a filling layer, first stacking the heating layer on the surface of the filling layer to form a pre-adhesion structure, and then filling the pre-adhesion structure in the filling hole, wherein the heating layer comprises a base material and a heating part, and the heating part is stacked on the surface of the base material away from the filling layer; The second glass layer is provided to match the curvature of the first glass layer, and is laminated to the side of the adhesive layer away from the first glass layer, and covers the pre-adhesion structure, to obtain the laminated glass.

14. The method of manufacturing according to claim 13, wherein, The "laminating the heating layer to the surface of the filling layer to form a pre-adhesion structure" comprises: forming an adhesive liquid on the surface of the filling layer or the heating layer; placing the heating layer on the surface of the filling layer, with the adhesive liquid on the surface of the filling layer or the heating layer between the filling layer and the heating layer, and pushing the heating layer with a roller to pre-adhere the heating layer to the filling layer to obtain the pre-adhesion structure.

15. The method of manufacturing according to claim 14, wherein, The side surface of the heating layer close to the filling layer is provided with a protective film, and the "placing the heating layer on the surface of the filling layer, with the adhesive liquid on the surface of the filling layer or the heating layer between the filling layer and the heating layer, and pushing the heating layer with a roller" comprises: separating the protective film from part of the heating layer from one side of the heating layer; placing the part of the heating layer separated from the protective film on the surface of the filling layer where the adhesive liquid is formed; pushing the heating layer with a roller while separating the remaining part of the protective film from the heating layer, to pre-adhere the heating layer to the filling layer to obtain the pre-adhesion structure; wherein the pushing direction of the roller is consistent with the separating direction of the protective film.

16. The method of manufacturing of claim 13, wherein, The "providing a basic adhesive layer, and placing the basic adhesive layer on the surface of the first glass layer, and opening a filling hole on the basic adhesive layer to form an adhesive layer" comprises: The basic adhesive layer comprises a first basic adhesive layer and a second basic adhesive layer, and the first basic adhesive layer and the second basic adhesive layer are laminated, and the filling hole is opened on the first basic adhesive layer or the second basic adhesive layer to form the adhesive layer.

17. A vehicle characterized by comprising: A vehicle body and the laminated glass according to any one of claims 1 to 11, wherein the laminated glass is installed on the vehicle body.

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