CN117183495A - Method for manufacturing laminated glass - Google Patents

Abstract

The application relates to a method for manufacturing laminated glass, which comprises the following steps: providing a first glass plate, a second glass plate, an adhesive sheet and a joint; at least one first exhaust channel is formed on the adhesive sheet at a position corresponding to the joint, the first exhaust channel extends to the side edge of the adhesive sheet, and the extension length L1 of the first exhaust channel is larger than the width W1 of the transverse extension part of the joint; and/or, at least one second exhaust passage is formed on the transverse extension of the joint, and the second exhaust passages extend to two opposite side edges of the transverse extension respectively; the first glass plate, the second glass plate, the bonding sheet and the joint are laminated and combined together, so that the bonding material of the bonding sheet flows into and fills the first exhaust passage and/or the second exhaust passage. When the lamination process is carried out, the gas close to the joint position can be smoothly discharged outwards through the first exhaust channel and/or the second exhaust channel, the blushing or bubble generation during the lamination process can be reduced, and the product qualification rate is improved.

Description

Method for manufacturing laminated glass

Technical Field

The application relates to the technical field of laminated glass, in particular to a manufacturing method of laminated glass.

Background

The laminated glass is a composite glass product which is formed by permanently bonding two or more pieces of glass with one or more layers of organic polymer intermediate films interposed therebetween and subjected to special high-temperature pre-pressing (or vacuumizing) and high-temperature high-pressure process treatment. Wherein PVB is a commonly used interlayer film of vehicle laminated glass. In order to realize the defrosting and defogging functions, a silver paste heating wire is printed or a clamping wire is arranged between two adjacent pieces of glass, and a sheet type connector which is welded with the silver paste or the clamping wire is arranged. The sheet metal joint is typically welded to the second or third face, sandwiched between the inner and outer sheets of glass and PVB.

In the related art, the sheet type joint has various shapes, especially for the joint with a Z-shaped transverse span, due to the longer transverse length, the compression whitening and the high-pressure bubble generation can occur when the sheet glass is combined with the inner sheet glass and the outer sheet glass, the product percent of pass is lower, the bubbles can expand and be displayed after flowing into the market, and some bubbles are tiny and difficult to find or are shielded by black edges after the sheet glass is combined, and the bubbles can continuously extend and grow for a long time and finally become snowflake-shaped bubbles.

Disclosure of Invention

Based on the above, it is necessary to overcome the defects of the prior art, and to provide a method for manufacturing laminated glass, which can reduce blushing or bubble generation during the lamination process and improve the product yield.

A method for manufacturing laminated glass, the method comprising the steps of:

providing a first glass plate, a second glass plate, an adhesive sheet and a joint; wherein at least one first air discharge channel is formed on the adhesive sheet at a position corresponding to the joint, the first air discharge channel extends to the side edge of the adhesive sheet close to the joint, and the extension length L1 of the first air discharge channel is larger than the width W1 of the transverse extension part of the joint; and/or at least one second exhaust passage is formed on the transverse extension of the joint, and the second exhaust passages respectively extend to two opposite side edges of the transverse extension;

and stacking and combining the first glass plate, the second glass plate, the bonding sheet and the joint together, so that the bonding material of the bonding sheet flows into and fills the first exhaust channel and/or the second exhaust channel.

In one embodiment, the plurality of first exhaust passages are arranged at intervals in sequence along the extending direction of the side edge; and/or the plurality of second exhaust barrel channels are arranged, and each second exhaust barrel channel is arranged at intervals along the extending direction of the transverse extending part.

In one embodiment, the first vent passage includes a notch through opposite surfaces of the adhesive sheet and/or a groove disposed on one of the surfaces of the adhesive sheet.

In one embodiment, the method for manufacturing the laminated glass further comprises the steps of:

forming the notch on the adhesive sheet by using a cutting member; and/or forming the groove on one surface of the adhesive sheet by rolling by using a roller with a protrusion.

In one embodiment, the lateral extension portion is provided with a plurality of first bending portions which are bent back and forth, and the first bending portions are formed with the second exhaust passage.

In one embodiment, the cross-sectional profile of the first fold along its extension is trigonometric curve, semi-circular or semi-elliptical.

In one embodiment, the distance between the wave crest and the wave trough of the transverse extension part along the direction vertical to the joint surface is h1, wherein h1 is less than or equal to 0.3mm; and/or the wavelength of the transverse extension part is set as lambda 1, and lambda 1 is more than or equal to 1.0mm.

In one embodiment, the lateral extension part is provided with a plurality of second bending parts which are sequentially spaced and protrude towards one side of the lateral extension part, and the second bending parts form the second exhaust passage; and/or, a plurality of bonding pieces which are sequentially arranged are arranged on one surface of the transverse extension part, and two adjacent bonding pieces are matched with the transverse extension part to form the second exhaust channel.

In one embodiment, the adhesive is double sided tape or prepreg.

In one embodiment, the distance between the crest of the second bending part and the surface of the transverse extending part is h2, h2 is less than or equal to 0.3mm, and the wavelength of the second bending part is lambda 2, and lambda 2 is more than or equal to 1.0mm; and/or the thickness of the bonding piece is set to be h3, h3 is less than or equal to 0.3mm, and the distance between two adjacent bonding pieces is set to be lambda 3, wherein lambda 3 is more than or equal to 1.0mm.

In one embodiment, before the step of laminating the first glass plate, the second glass plate, the adhesive sheet, and the joint together, the method further comprises: and in the aligning step, the transverse extension part obtains a first projection on the bonding sheet along the direction vertical to the surface of the bonding sheet, the distance between one side of the first projection far away from the side edge and the side edge is L2, and the distance L2 is smaller than or equal to the extension length L1 of the first exhaust channel.

In one embodiment, before the step of laminating the first glass plate, the second glass plate, the adhesive sheet and the joint together, the method further comprises the step of:

providing copper foil and heating wires;

arranging the copper foil, the heating wire and the joint on an adhesive sheet;

welding the copper foil with the joint;

the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet and the joint specifically includes: and stacking and combining the first glass plate, the second glass plate, the adhesive sheet, the joint, the copper foil and the heating wire together.

In one embodiment, before the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet, the joint, the copper foil, and the heating wire together, the method further comprises:

and in the alignment step, the copper foil obtains a second projection on the bonding sheet along the direction vertical to the surface of the bonding sheet, the distance between one side of the second projection, which is far away from the side edge, and the side edge is L3, and the distance L3 is smaller than or equal to the extension length L1 of the first exhaust channel.

In one embodiment, a printed heater wire is provided on a surface of the first glass plate facing the second glass plate or on a surface of the second glass plate facing the first glass plate;

the method further comprises the step of, prior to the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet and the joint together:

and welding the joint with the printing heating wire.

According to the manufacturing method of the laminated glass, when at least one first exhaust channel is formed on the bonding sheet at the position corresponding to the joint, and the first exhaust channel extends to the side edge of the bonding sheet close to the joint, the extending length L1 of the first exhaust channel is larger than the width W1 of the transverse extending part of the joint, so that gas close to the joint can be smoothly discharged outwards through the first exhaust channel in the lamination process, whitening or bubble generation in the lamination process can be reduced, and the product qualification rate is improved; in addition, the bonding material of the bonding sheet is overflowed under pressure and filled in the first exhaust channel in the bonding sheet process, so that air bubbles caused by the fact that air enters the clamping glass can be prevented; when the joint is formed with at least one second exhaust channel on the transverse extension part, the second exhaust channels extend to the two opposite sides of the transverse extension part respectively, and the gas close to the joint can be smoothly discharged outwards through the second exhaust channels during the lamination process, so that whitening or bubble generation during the lamination process can be reduced, and the product qualification rate is improved. In addition, the bonding material of the bonding sheet is overflowed under pressure and filled in the second exhaust channel in the bonding sheet process, so that air bubbles caused by the fact that air enters the clamping glass can be prevented.

Drawings

FIG. 1 is a perspective view of a first glass plate, a second glass plate, an adhesive sheet and a joint according to an embodiment of the present application.

FIG. 2 is a cross-sectional block diagram of one embodiment of the structure shown in FIG. 1 at B-B.

FIG. 3 is a cross-sectional view of one embodiment of the adhesive sheet of the construction shown in FIG. 1 at C-C.

Fig. 4 is a cross-sectional structural view of another embodiment of the adhesive sheet of the structure shown in fig. 1 at C-C.

Fig. 5 is a cross-sectional structural view of still another embodiment of the adhesive sheet of the structure shown in fig. 1 at C-C.

FIG. 6 is a cross-sectional block diagram of another embodiment of the structure shown in FIG. 1 at B-B.

Fig. 7 is a cross-sectional structural view of an embodiment of a lateral extension in the structure of fig. 1.

Fig. 8 is a cross-sectional structural view of another embodiment of a lateral extension in the structure shown in fig. 1.

Fig. 9 is a cross-sectional structural view of yet another embodiment of a lateral extension in the structure shown in fig. 1.

FIG. 10 is a cross-sectional block diagram of yet another embodiment of the structure shown in FIG. 1 at B-B.

10. A first glass plate; 11. a first surface; 12. a second surface; 20. a second glass plate; 21. a third surface; 22. a fourth surface; 30. an adhesive sheet; 31. a first exhaust passage; 32. a side edge; 40. a joint; 41. a lateral extension; 411. a second exhaust passage; 412. a first bending part; 413. a second bending part; 414. an adhesive member; 42. a lead-out part; 50. a bus; 51. copper foil; 511. a first copper foil; 512. a second copper foil; 52. printing a heating wire; 60. an exhaust passage; 70. a heating wire; 80. and a shielding layer.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

As described in the background art, particularly for the problem that the transverse span zigzag joint is easily whitened or air bubbles are generated during the lamination process, the inventor has found that the problem arises because the sheet joint still has a certain thickness, for example, 0.2mm, to raise the gap between PVB and glass, thereby forming a wall to block the vent passage. In addition, the pitch a of the tab and bus bar copper foil is too small, less than 3mm, so that the vent channel is a narrow zigzag channel. Therefore, air bubbles at a position close to the sheet joint during the lamination process cannot be timely discharged outward, and are easily whitened or generated during the lamination process.

Based on the above reasons, the application provides a method for manufacturing laminated glass, which can reduce blushing or bubble generation in the lamination process and improve the product qualification rate.

Referring to fig. 1 and 2, fig. 1 shows a perspective structural view of a first glass plate 10, a second glass plate 20, an adhesive sheet 30 and a joint 40 superimposed together according to an embodiment of the present application, and fig. 2 shows a cross-sectional structural view of an embodiment of the structure shown in fig. 1 at B-B. The manufacturing method of the laminated glass provided by the embodiment of the application comprises the following steps:

step S100, providing a first glass plate 10, a second glass plate 20, an adhesive sheet 30 and a joint 40;

it should be noted that, the connector 40 in this embodiment may be a single connector 40 or a double connector 40, where the single connector 40 and the double connector 40 are different in the structure of the lead-out portion 42, the lead-out portion 42 of the single connector 40 is set to be one, and is connected to two bus bars 50 arranged at intervals through one lead-out portion 42, that is, the two bus bars 50 are connected to the positive electrode or the negative electrode through the same lead-out portion 42; the two lead-out portions 42 of the double connector 40 are provided, and the two lead-out portions 42 are respectively connected with the two bus bars 50 which are arranged at intervals, namely, the two bus bars 50 are respectively connected with the positive electrode or the negative electrode through one lead-out portion 42. The bus bar 50 may be either a copper foil 51 as shown in fig. 2 or 6 or a silver paste as shown in fig. 10. In this embodiment, the joint 40 shown in fig. 1 is specifically taken as an example of a double joint 40, in the double joint 40, two lead-out portions 42 are arranged at intervals, one lead-out portion 42 is connected with one bus bar 50 through a lateral extension portion 41, the lateral direction of the lateral extension portion 41 is shown by a double arrow S in fig. 1, the other lead-out portion 42 is directly connected with the other bus bar 50, an exhaust channel 60 is formed between the one lead-out portion 42 and the other lead-out portion 42 and the bus bar 50 connected with the other lead-out portion, the exhaust channel 60 is in a zigzag shape, and the gas flowing direction of the exhaust channel 60 is shown by a dashed arrow. When the length L of the lateral extension 41 is greater, the distance a between the lateral extension 41 and the bus bar 50 is too small, less than 3mm, which is disadvantageous for outward discharge of gas during the lamination process, resulting in whitening or bubble defects.

Based on this, in the present embodiment, at least one first air discharge passage 31 is formed on the adhesive sheet 30 at a position corresponding to the joint 40, the first air discharge passage 31 extends to a side 32 of the adhesive sheet 30 adjacent to the joint 40, and an extension length L1 of the first air discharge passage 31 is greater than a width W1 of the lateral extension 41 of the joint 40;

of course, the present embodiment may be not limited to the above-mentioned first air discharge channel 31, as an alternative, referring to fig. 6 to 9, at least one second air discharge channel 411 is formed on the lateral extension 41 of the joint 40, and the second air discharge channels 411 extend to two opposite sides 32 of the lateral extension 41 respectively;

in step S200, the first glass plate 10, the second glass plate 20, the adhesive sheet 30 and the joint 40 are laminated and combined together, so that the adhesive material of the adhesive sheet 30 flows into and fills the first exhaust passage 31 and/or the second exhaust passage 411.

In the above-mentioned method for manufacturing laminated glass, referring to fig. 1 to 5, when at least one first air exhaust channel 31 is formed on the adhesive sheet 30 at a position corresponding to the joint 40, and the first air exhaust channel 31 extends to the side 32 of the adhesive sheet 30 adjacent to the joint 40, the extending length L1 of the first air exhaust channel 31 is greater than the width W1 of the lateral extending portion 41 of the joint 40, so that during the lamination process, the air adjacent to the joint 40 can be smoothly discharged outwards through the first air exhaust channel 31, whitening or bubble generation during the lamination process can be reduced, and the product yield is improved; in addition, the bonding material of the bonding sheet 30 is overflowed under pressure and filled in the first exhaust channel 31 during the bonding process, so that air bubbles caused by the air entering the clamped glass can be prevented;

referring to fig. 6 to 9, when at least one second exhaust channel 411 is formed on the lateral extension portion 41 of the joint 40, the second exhaust channels 411 extend to opposite sides of the lateral extension portion 41, respectively, and when the lamination process is performed, the gas close to the joint 40 can be smoothly discharged outwards through the second exhaust channels 411, so that whitening or bubble generation during the lamination process can be reduced, and the product yield is improved. In addition, the adhesive material of the adhesive sheet 30 is overflowed under pressure and filled in the second exhaust passage 411 during the lamination process, so that air bubbles caused by the gas entering the inside of the holding glass can be prevented.

In one embodiment, the plurality of first exhaust passages 31 are provided, and each of the first exhaust passages 31 is sequentially arranged at intervals along the extending direction of the side edge 32; and/or, the second exhaust duct channels are plural, and each of the second exhaust duct channels 411 is sequentially arranged at intervals along the extending direction of the lateral extending portion 41. When the number of the first exhaust channels 31 and/or the second exhaust channels 411 is larger, the exhaust effect is smoother in the lamination process, so that the initial pressure and the high pressure are not whitened or bubble generation, and the improvement is very obvious.

Note that, the extending direction of the side 32 is also shown as S in fig. 1. Further, the lateral extension 41 is located in particular at the side of the laminated glass when arranged, and the extension direction of the lateral extension 41 is parallel to the extension direction of the side edges 32, i.e. as shown in fig. 1S.

In a specific embodiment, the first exhaust passages 31 are sequentially and equally spaced along the extending direction of the side 32, so that the exhaust effect at each position along the extending direction of the side 32 can be made to be equivalent, which is beneficial to improving the quality of the finished product. Of course, the first exhaust passages 31 may also be arranged at unequal intervals, and specifically may be flexibly adjusted and set according to actual requirements, which is not limited herein. Further, similarly, the respective second exhaust passages 411 are arranged at equal intervals in order in the extending direction of the lateral extension 41, so that the exhaust effect at the respective positions in the extending direction of the lateral extension 41 can be made equivalent, which is advantageous in improving the quality of the finished product. Of course, the second exhaust passages 411 may also be arranged in an unequal interval manner, and specifically may be flexibly adjusted and set according to actual requirements, which is not limited herein.

Referring to fig. 2 to 5, in some embodiments, the first exhaust channels 31 on the bonding sheet 30 are more specifically arranged, and can be flexibly adjusted and arranged according to actual requirements, so long as the wall thickness is smaller than other portions of the bonding sheet 30, so that the air can be smoothly exhausted during the lamination process. As an example, referring to fig. 3, the first vent channel 31 includes a notch extending through opposite surfaces of the adhesive sheet 30, the notch including, but not limited to, being cut by a cutting member including, but not limited to, a knife, a laser instrument, or the like. As another example, referring to fig. 4 and 5, the first exhaust passage 31 includes a groove provided on one of the surfaces of the adhesive sheet 30, which may be formed rapidly by rolling on one of the surfaces of the adhesive sheet 30 by a roller with protrusions, may be cut by a cutting member, or may be machined by other means. In addition, the cross-sectional profile of the groove along the extending direction thereof is a regular shape such as a V-shape, a semicircle shape, a semi-ellipse shape, a square shape, or other irregular shape. As yet another example, when the plurality of first exhaust passages 31 are provided, at least one first exhaust passage 31 is provided as a notch, and at least another first exhaust passage 31 is provided as a groove, which can be flexibly adjusted and combined according to actual requirements.

Referring to fig. 6 and 7, in one embodiment, the lateral extension 41 is provided with a plurality of first bending portions 412 that bend reciprocally. The first bent portion 412 is formed with a second exhaust passage 411. Therefore, the exhaust effect is smoother in the lamination process, the initial pressure and the high pressure can not generate blushing or bubble generation, and the improvement is very obvious.

The cross-sectional profile of the first bending portion 412 along the extending direction thereof includes, but is not limited to, an arc shape, such as a trigonometric curve shape, a semicircular shape, a semi-elliptical shape, or a folded line shape, such as a square wave shape, a triangle shape, or various regular shapes and irregular shapes of a combination of an arc shape and a folded line shape, and particularly, the cross-sectional profile can be flexibly adjusted and set according to actual requirements. In this embodiment, the cross-sectional profile of the first bending portion 412 is specifically configured to be arc-shaped, so that the first bending portion can be flattened during the lamination process, so that the laminated glass product has a flat surface after being laminated, and the product yield is improved.

In one embodiment, the cross-sectional profile of the first fold 412 along its extension is trigonometric curve, semi-circular, or semi-elliptical. In this way, the shape of the lateral extension 41 is relatively regular, and is easily flattened during the lamination process, thereby facilitating the improvement of the product quality.

Referring to fig. 6 and 7, in one embodiment, the distance between the peaks and the valleys of the lateral extension 41 along the direction perpendicular to the surface of the joint 40 is set to be h1, where h1 is less than or equal to 0.3mm; and/or, the wavelength of the lateral extension 41 is set to λ1, λ1 being 1.0mm or more. Thus, it has been found that, in the lamination process, on one hand, the second exhaust channel 411 is large enough to facilitate the smooth discharge of the gas through the second exhaust channel 411, thereby better preventing the generation of bubbles; on the other hand, h1 is not excessively large, and the lateral extension 41 is easily flattened by being pressed by the glass plate; in addition, the thickness of the adhesive sheet 30 is generally 0.76mm, enabling filling of the second vent passage 411 and avoiding bubble generation; in addition, if h1 is too large, it is not easy to flatten out, and the product yield is lowered.

In some embodiments, the method of making a laminated glass further comprises the steps of: a plurality of first bending portions 412 are formed on the lateral extension portion 41 to be bent back and forth by means of mold pressing.

It should be noted that the specific form of the lateral extension portion 41 is more, and is not limited to the reciprocally bent first bending portion 412 in the above embodiment, and may be configured in the following ways:

referring to fig. 6 and 8, in another embodiment, the lateral extension 41 is provided with a plurality of second bending portions 413 sequentially spaced apart and protruding toward one side thereof. The second bent portion 413 forms a second exhaust passage 411. Similar to the first bending portion 412, the cross-sectional profile of the second bending portion 413 along the extending direction thereof includes, but is not limited to, an arc shape, such as a trigonometric function curve shape, a semicircular shape, a semi-elliptical shape, or a folded line shape, such as a square wave shape, a triangle shape, and various regular shapes and irregular shapes of a combination of an arc shape and a folded line shape, and particularly, the cross-sectional profile can be flexibly adjusted and set according to practical requirements. In this embodiment, the cross-sectional profile of the second bending portion 413 is specifically configured to be arc-shaped, so that the second bending portion can be flattened during the lamination process, so that the laminated glass product has a flat surface after being laminated, and the product yield is improved.

Referring to fig. 6 and 9, in another embodiment, a plurality of bonding elements 414 are disposed on one surface of the lateral extension 41, and two adjacent bonding elements 414 cooperate with the lateral extension 41 to form a second exhaust channel 411. In this way, the lateral extension 41 does not need to be bent, and each bonding piece 414 is directly bonded to one surface of the lateral extension 41, so that the manufacturing process is simpler, and the process efficiency can be improved.

Referring to fig. 6 and 8, in still another embodiment, the lateral extension 41 is provided with a plurality of second bending portions 413 sequentially spaced apart and protruding toward one side thereof, and an adhesive member 414 between two adjacent second bending portions 413. In this way, the two adjacent bonding pieces 414 are located at the second bending portion 413 and form the second air exhaust channel 411 in a combined manner, so that the peak height of the second bending portion 413 can be reduced, and the lateral extension portion 41 can be flattened conveniently during the lamination process.

In one embodiment, the adhesive 414 includes, but is not limited to, double sided tape or prepreg. The adhesive sheet 30 and the prepreg are separately provided, and include, but are not limited to, polyvinyl butyral (PVB), polycarbonate (PC), soundproof PVB, light shielding tape PVB, heat control PVB, ethylene Vinyl Acetate (EVA), thermoplastic Polyurethane (TPU), ionomer, thermoplastic material, polybutylene terephthalate (PBT), polyethylene vinyl acetate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVf), polyacrylate (PA), polymethyl methacrylate (PMMA), polyurethane (PUR), and combinations thereof.

Referring to fig. 8, in one embodiment, the distance between the peak of the second bending portion 413 and the surface of the lateral extension portion 41 is h2, where h2 is less than or equal to 0.3mm, and the wavelength of the second bending portion 413 is λ2, where λ2 is less than or equal to 1.0mm.

Referring to FIG. 9, the thickness of the bonding member 414 is set to be h3, wherein h3 is less than or equal to 0.3mm, and the distance between two adjacent bonding members 414 is set to be λ3, wherein λ3 is more than or equal to 1.0mm.

Referring again to fig. 1 and 2, in one embodiment, before the step of laminating the first glass plate 10, the second glass plate 20, the adhesive sheet 30 and the joint 40, the method further comprises: in the alignment step, the lateral extension 41 obtains a first projection on the adhesive sheet 30 along a direction perpendicular to the surface of the adhesive sheet 30, wherein a distance L2 between a side of the first projection away from the side 32 and the side 32 is smaller than or equal to an extension length L1 of the first exhaust channel 31. In this way, the first exhaust channel 31 spans across the lateral extension 41 of the joint 40, so that the exhaust is smooth during the lamination process, and the whitening or bubble generation defect is effectively improved, so that the product yield is improved.

Referring back to fig. 1 and 2, in one embodiment, the bus bar 50 is specifically configured as a copper foil 51, and further includes the steps of, before the step of laminating the first glass plate 10, the second glass plate 20, the adhesive sheet 30 and the joint 40 together:

providing a copper foil 51 and a heating wire 70;

a copper foil 51, a heating wire 70 and a joint 40 are arranged on the adhesive sheet 30;

welding the copper foil 51 to the joint 40;

the step of laminating and combining the first glass plate 10, the second glass plate 20, the adhesive sheet 30 and the joint 40 specifically includes: the first glass plate 10, the second glass plate 20, the adhesive sheet 30, the joint 40, the copper foil 51, and the heating wire 70 are laminated and combined.

Referring to fig. 1 and 2, in one embodiment, before the step of laminating the first glass plate 10, the second glass plate 20, the adhesive sheet 30, the joint 40, the copper foil 51 and the heating wire 70, the method further comprises:

in the alignment step, the copper foil 51 obtains a second projection on the adhesive sheet 30 along a direction perpendicular to the surface of the adhesive sheet 30, wherein a distance L3 between a side of the second projection away from the side 32 and the side 32 is smaller than or equal to the extension length L1 of the first exhaust channel 31. In this way, the first air exhaust channel 31 spans across the copper foil 51, so that air exhaust is smooth during the lamination process, whitening or bubble generation defects are effectively improved, and the product yield is improved.

Referring to fig. 1 and 2 or fig. 6, in one embodiment, the copper foil 51 includes a first copper foil 511 and a second copper foil 512 disposed one above the other. The first copper foil 511 is embedded in the adhesive sheet 30 and is located on one side of the joint 40 to be welded with the joint 40, and the second copper foil 512 is located on the other side of the joint 40 and is abutted against the lateral extension 41, so that the lateral extension 41 is clamped and fixed between the first copper foil 511 and the second copper foil 512. In addition, the heating wire 70 is sandwiched and fixed between the first copper foil 511 and the second copper foil 512.

Referring to fig. 1 and 10, in one embodiment, the bus bar 50 is, for example, a printed heater wire 52, and the printed heater wire 52 may be disposed on a surface of the first glass plate 10 facing the second glass plate 20, or may be disposed on a surface of the second glass plate 20 facing the first glass plate 10;

before the step of laminating and combining the first glass plate 10, the second glass plate 20, the adhesive sheet 30 and the joint 40 together, the steps of: the connector 40 is soldered to the printed heater wire 52.

In one embodiment, the printed heater wire 52 includes, but is not limited to, a printed silver paste.

In one embodiment, the first glass sheet 10 is, for example, an outer sheet of glass disposed facing the exterior of the vehicle, and the second glass sheet 20 is correspondingly disposed facing an inner sheet of glass disposed facing the interior of the vehicle. The first glass plate 10 is provided with a first surface 11 and a second surface 12 which are arranged opposite to each other, the second glass plate 20 is provided with a third surface 21 and a fourth surface 22 which are arranged opposite to each other, and the second surface 12 is arranged opposite to the third surface 21. The joint 40 and the bus bar 50 may be disposed between the second surface 12 and the adhesive sheet 30 and connected to the third surface 21 through the adhesive sheet 30, or may be disposed between the third surface 21 and the adhesive sheet 30 and connected to the second surface 12 through the adhesive sheet 30.

In one embodiment, the laminated glass is further provided with a shielding layer 80, the shielding layer 80 being provided on the first surface 11, the second surface 12 or the third surface 21, for example. The shielding layer 80 is commonly called a black edge, the transmittance of invisible light is less than or equal to 10%, the shielding effect is achieved, and the safety and the attractiveness are improved.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (14)

1. The manufacturing method of the laminated glass is characterized by comprising the following steps of:

providing a first glass plate, a second glass plate, an adhesive sheet and a joint; wherein at least one first air discharge channel is formed on the adhesive sheet at a position corresponding to the joint, the first air discharge channel extends to the side edge of the adhesive sheet close to the joint, and the extension length L1 of the first air discharge channel is larger than the width W1 of the transverse extension part of the joint; and/or at least one second exhaust passage is formed on the transverse extension of the joint, and the second exhaust passages respectively extend to two opposite side edges of the transverse extension;

and stacking and combining the first glass plate, the second glass plate, the bonding sheet and the joint together, so that the bonding material of the bonding sheet flows into and fills the first exhaust channel and/or the second exhaust channel.

2. The method of manufacturing a laminated glass according to claim 1, wherein the plurality of first exhaust passages are provided, each of the first exhaust passages being arranged at intervals in the extending direction of the side edge in order; and/or the plurality of second exhaust barrel channels are arranged, and each second exhaust barrel channel is arranged at intervals along the extending direction of the transverse extending part.

3. The method of manufacturing a laminated glass according to claim 1, wherein the first vent passage includes a notch penetrating through opposite surfaces of the adhesive sheet and/or a groove arranged on one of the surfaces of the adhesive sheet.

4. A method of manufacturing a laminated glass according to claim 3, further comprising the steps of:

forming the notch on the adhesive sheet by using a cutting member; and/or forming the groove on one surface of the adhesive sheet by rolling by using a roller with a protrusion.

5. The method according to claim 1, wherein the lateral extension portion is provided with a plurality of first bending portions which are bent back and forth, and the first bending portions are formed with the second exhaust passage.

6. The method according to claim 5, wherein the first bending portion has a triangular curve, a semicircular curve, or a semi-elliptical cross-sectional profile along the extending direction thereof.

7. The method of manufacturing a laminated glass according to claim 5, wherein a distance between a peak and a trough of the lateral extension portion in a direction perpendicular to the joint surface is set to be h1, wherein h1 is not more than 0.3mm; and/or the wavelength of the transverse extension part is set as lambda 1, and lambda 1 is more than or equal to 1.0mm.

8. The method of manufacturing a laminated glass according to claim 1, wherein the lateral extension portion is provided with a plurality of second bent portions which are sequentially spaced apart and protrude toward one side thereof, the second bent portions forming the second exhaust passage; and/or, a plurality of bonding pieces which are sequentially arranged are arranged on one surface of the transverse extension part, and two adjacent bonding pieces are matched with the transverse extension part to form the second exhaust channel.

9. The method of claim 8, wherein the adhesive member is a double sided tape or a prepreg.

10. The method according to claim 8, wherein a distance between a peak of the second bending portion and a surface of the lateral extending portion is h2, h2 is not more than 0.3mm, and a wavelength of the second bending portion is λ2, λ2 is not less than 1.0mm; and/or the thickness of the bonding piece is set to be h3, h3 is less than or equal to 0.3mm, and the distance between two adjacent bonding pieces is set to be lambda 3, wherein lambda 3 is more than or equal to 1.0mm.

11. The method of manufacturing a laminated glass according to claim 1, wherein before the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet, and the joint, the method further comprises: and in the aligning step, the transverse extension part obtains a first projection on the bonding sheet along the direction vertical to the surface of the bonding sheet, the distance between one side of the first projection far away from the side edge and the side edge is L2, and the distance L2 is smaller than or equal to the extension length L1 of the first exhaust channel.

12. The method for producing a laminated glass according to claim 1, further comprising, before the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet, and the joint, the steps of:

providing copper foil and heating wires;

arranging the copper foil, the heating wire and the joint on an adhesive sheet;

welding the copper foil with the joint;

the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet and the joint specifically includes: and stacking and combining the first glass plate, the second glass plate, the adhesive sheet, the joint, the copper foil and the heating wire together.

13. The method of manufacturing a laminated glass according to claim 12, wherein before the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet, the joint, the copper foil, and the heating wire, further comprises:

and in the alignment step, the copper foil obtains a second projection on the bonding sheet along the direction vertical to the surface of the bonding sheet, the distance between one side of the second projection, which is far away from the side edge, and the side edge is L3, and the distance L3 is smaller than or equal to the extension length L1 of the first exhaust channel.

14. The method of manufacturing a laminated glass according to any one of claims 1 to 11, wherein a printed heating wire is provided on a surface of the first glass plate facing the second glass plate or a surface of the second glass plate facing the first glass plate;

the method further comprises the step of, prior to the step of laminating and combining the first glass plate, the second glass plate, the adhesive sheet and the joint together:

and welding the joint with the printing heating wire.