JP6379771B2 - Laminated glass, mesh sheet and intermediate member for laminated glass - Google Patents

Description

  The present invention relates to a laminated glass, a mesh sheet, and an intermediate member for laminated glass.

  2. Description of the Related Art Conventionally, as a defroster device used for a window glass such as a front window or a rear window of a vehicle, an apparatus in which a heating wire made of tungsten wire or the like is arranged on the entire window glass is known (for example, Patent Document 1 and Patent Document 2). reference). In this prior art, a heating wire arranged on the entire window glass is energized, and the window glass is heated by resistance heating to remove fogging of the window glass or to melt snow and ice attached to the window glass. The occupant's field of view can be secured.

JP 2013-173402 A JP-A-8-72674

  In a conventional defroster device, a bonding layer and a heating wire are sandwiched between a pair of glass plates and thermocompression bonded to form a laminated glass. Moreover, as a heating wire, what consists of thin wires, such as tungsten manufactured at the separate process, was used. However, as a result of extensive studies by the present inventors, it has been found that in such a laminated glass, the diffusion and diffraction of light in a thin line adversely affects visibility. In particular, in the method of arranging the heating wire manufactured in a separate process, the arrangement pattern of the heating wire is limited to a simple shape such as a straight line or a wavy line, and the above-described adverse effects on the visibility due to the diffusion and diffraction of light become remarkable. It was.

  On the other hand, as a wiring forming method, a method of forming a conductive wiring on a base substrate by patterning using a photolithography technique is known. In this method, first, a conductive metal layer is formed on a flat base substrate by attaching a metal foil such as a copper foil, plating, sputtering, or the like. Next, a resist pattern is formed on the conductive metal layer using a photolithography technique. Then, the conductive metal layer is etched using this resist pattern as a mask. By this etching, the conductive metal layer is patterned into a pattern substantially the same as the resist pattern. This method has an advantage that even a conductive wiring having a complicated arrangement pattern can be easily formed.

  However, in this method, since the wiring is formed on the base substrate, if the wiring formed by this method is used as it is as a heating wire for laminated glass, at least, a glass plate, a bonding layer, a heating wire, It has a six-layer configuration of a base substrate, a bonding layer, and a glass plate. In this case, since the glass plate and the heating wire are necessarily laminated via the bonding layer, the heating efficiency of the glass plate by the heating wire is lowered. Further, when the number of laminated glass layers increases, the optical interface increases, leading to a decrease in optical properties that leads to a decrease in visibility. In addition, an increase in the number of layers and an increase in the weight of the entire laminated glass may contribute to a deterioration in fuel consumption of the vehicle.

  The present invention has been made in consideration of the above points, and an object of the present invention is to improve the degree of freedom in pattern design of conductive wiring without increasing the number of laminated glass layers.

The laminated glass according to the present invention includes a pair of glass plates,
A bonding layer disposed between the pair of glass plates and bonding the pair of glass plates;
A conductive mesh disposed between the bonding layer and one of the pair of glass plates.

  In the laminated glass according to the present invention, the conductive mesh may be in surface contact with one of the pair of glass plates.

  In the laminated glass according to the present invention, each glass plate may be curved with opposing convex surfaces and concave surfaces, and the conductive mesh may be in surface contact with one concave surface of the pair of glass plates.

The mesh sheet according to the present invention is:
A substrate;
A release layer provided on the substrate;
A conductive mesh provided on the release layer.

The intermediate member for laminated glass according to the present invention is:
A bonding layer;
A conductive mesh at least partially embedded in one of the first surface and the second surface of the bonding layer;
Is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the freedom degree of the pattern design of an electrically conductive wiring can be improved, without increasing the number of layers of a laminated glass.

FIG. 1 is a diagram for explaining an embodiment according to the present invention, and is a perspective view schematically showing a vehicle provided with a laminated glass. In particular, FIG. 1 schematically shows an automobile with laminated glass as an example of a vehicle. FIG. 2 is a view of the laminated glass as viewed from the normal direction of the plate surface. FIG. 3 is a cross-sectional view of the laminated glass of FIG. FIG. 4 is a plan view showing an example of a conductive mesh pattern. Drawing 5 is a figure for explaining an example of the manufacturing method of a mesh sheet. Drawing 6 is a figure for explaining an example of the manufacturing method of a mesh sheet. Drawing 7 is a figure for explaining an example of the manufacturing method of a mesh sheet. FIG. 8 is a diagram for explaining an example of a mesh sheet manufacturing method. FIG. 9 is a diagram for explaining an example of a mesh sheet manufacturing method. Drawing 10 is a figure for explaining an example of the manufacturing method of a mesh sheet. FIG. 11 is a diagram for explaining an example of a mesh sheet manufacturing method. FIG. 12 is a diagram for explaining an example of a mesh sheet manufacturing method. FIG. 13 is a diagram for explaining an example of a method for producing laminated glass. FIG. 14 is a diagram for explaining an example of a method for producing laminated glass. FIG. 15 is a diagram for explaining an example of a method for manufacturing a laminated glass. FIG. 16 is a diagram for explaining a modification of the method for manufacturing laminated glass. FIG. 17 is a diagram for explaining another example of a method for manufacturing a laminated glass. FIG. 18 is a diagram for explaining still another example of a method for manufacturing a laminated glass.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, the vertical / horizontal dimension ratio, and the like are appropriately changed and exaggerated from those of the actual product.

  In the present specification, the terms “plate”, “sheet”, and “film” are not distinguished from each other only based on the difference in names. For example, “mesh sheet” is a concept that includes a member that can be called a plate or a film. Therefore, “mesh sheet” is a member called “mesh plate (substrate)” or “mesh film”. It cannot be distinguished only by the difference.

  In addition, “sheet surface (plate surface, film surface)” means a target sheet-like member (plate-like) when the target sheet-like (plate-like, film-like) member is viewed as a whole and globally. It refers to the surface that coincides with the plane direction of the member or film-like member.

  In this specification, “joining” includes not only “main joining” that completely completes joining but also so-called “temporary joining” for temporarily fixing before “main joining”.

  In addition, as used in this specification, the shape and geometric conditions and the degree thereof are specified, for example, terms such as “parallel”, “orthogonal”, “identical”, length and angle values, etc. are strictly Without being bound by meaning, it should be interpreted including the extent to which similar functions can be expected.

  1 to 4 are diagrams for explaining an embodiment according to the present invention. Among these, FIG. 1 is a diagram schematically showing an automobile equipped with a laminated glass, FIG. 2 is a diagram of the laminated glass viewed from the normal direction of the plate surface, and FIG. 3 is a diagram of FIG. It is a cross-sectional view of glass.

  As shown in FIG. 1, an automobile 1 as an example of a vehicle has window glasses such as a front window, a rear window, and a side window. Here, an example in which the front window 5 is composed of a laminated glass 10 is illustrated. The automobile 1 has a power source 7 such as a battery.

  FIG. 2 shows the laminated glass 10 viewed from the normal direction of the plate surface. Moreover, the cross-sectional view corresponding to the III-III line of the laminated glass 10 of FIG. 2 is shown in FIG. The laminated glass 10 includes a pair of glass plates 11 and 12, a bonding layer 20 for bonding the pair of glass plates 11 and 12, and a conductive mesh 30 disposed between the bonding layer 20 and the glass plate 11. Have.

  In addition, the laminated glass 10 includes a wiring portion 15 for energizing the conductive mesh 30 and a connection portion 16 that connects the conductive mesh 30 and the wiring portion 15. In the example shown in FIGS. 2 and 3, the conductive mesh 30 is energized from the power source 7 such as a battery via the wiring portion 15 and the connection portion 16, and the conductive mesh 30 is heated by resistance heating. The heat generated in the conductive mesh 30 is transmitted to the glass plates 11 and 12, and the glass plates 11 and 12 are warmed. Thereby, the cloudiness by the dew condensation adhering to the glass plates 11 and 12 can be removed. Moreover, when snow and ice adhere to the glass plates 11 and 12, this snow and ice can be melted. Therefore, a passenger | crew's visual field is ensured favorable.

  First, the conductive mesh 30 will be described with reference to FIG. FIG. 4 is a plan view showing an example of an arrangement pattern of the conductive mesh 30.

  The conductive mesh 30 is energized from the power source 7 such as a battery through the wiring portion 15 and the connection portion 16 and generates heat by resistance heating. And when this heat is transmitted to the glass plates 11 and 12, the glass plates 11 and 12 are warmed.

  As shown in FIG. 4, the conductive mesh 30 is a mesh member that defines a large number of openings 33. The conductive mesh 30 includes a plurality of thin conductive wires 31 extending between two branch points 32 and defining an opening 33. That is, the conductive mesh 30 is configured as a collection of a large number of thin conductive wires 31 that form branch points 32 at both ends. In particular, in the illustrated example, at the branch point 32, three conductive thin wires 31 are connected at an equal angle, so that a large number of honeycomb-shaped openings 33 having the same shape surrounded by the six conductive thin wires 31 are defined. Yes.

  In addition, each thin conductive wire 31 is integrally formed at each branch point 32. That is, they are formed from the same material without joints. When each thin conductive wire 31 is integrally formed at each branch point 32, it is possible to effectively prevent the conductive thin wire 31 from being broken or broken at each branch point 32.

  Examples of the material for forming the conductive mesh 30 include one or more of gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, tungsten, and alloys thereof. Can be illustrated.

  The conductive mesh 30 can be formed using an opaque metal material as described above. On the other hand, the conductive mesh 30 is formed with a high aperture ratio of about 70% to 90%. Moreover, the line width of the thin conductive wire 31 is about 2 μm or more and 20 μm or less. For this reason, the electroconductive mesh 30 is grasped | ascertained transparently as a whole, and it does not impair visibility.

  Incidentally, FIG. 15 shows an example of the cross-sectional shape of the conductive thin wire 31 of the conductive mesh 30 in the same cross section as FIG. In the illustrated example, the conductive thin wire 31 has a surface 31d that contacts the glass plate 11, a surface 31a opposite to the side facing the glass plate 11, and side surfaces 31b and 31c, and has a rectangular shape as a whole. It has a cross section. The width W of the thin conductive wire 31, that is, the width W along the plate surface of the laminated glass 10 is 2 μm or more and 20 μm or less, and the height (thickness) H, that is, along the normal direction to the plate surface of the laminated glass 10. The height (thickness) H is preferably 1 μm or more and 60 μm or less. According to the conductive thin wire 31 having such a size, since the conductive thin wire 31 is sufficiently thinned, the conductive mesh 40 can be effectively invisible.

  15 includes a first dark color layer 36 provided on the glass plate 11, a conductive metal layer 35 provided on the first dark color layer 36, and a conductive metal. A second dark color layer 37 provided on the layer 35 is included. In other words, the surface of the conductive metal layer 35 facing the glass plate 11 is covered by the first dark color layer 36, and the surface of the conductive metal layer 35 faces the glass plate 11. The second dark color layer 37 covers the surface opposite to the side and both side surfaces.

  The conductive metal layer 35 made of a metal material having excellent conductivity exhibits a relatively high reflectance. When the light is reflected by the conductive metal layer 35 that forms the conductive thin wires 31 of the conductive mesh 30, the reflected light is visually recognized, which may obstruct the occupant's field of view. Further, when the conductive metal layer 35 is visually recognized from the outside, the designability may be deteriorated. Therefore, the dark color layers 36 and 37 are disposed on at least a part of the surface of the conductive metal layer 35. The dark color layers 36 and 37 may be layers having lower visible light reflectivity than the conductive metal layer 35, and are dark color layers such as black. The dark color layers 36 and 37 make it difficult for the conductive metal layer 35 to be visually recognized, thereby ensuring a good occupant's field of view. Moreover, the fall of the designability when seen from the outside can be prevented.

  Next, the glass plates 11 and 12 will be described. In particular, when the glass plates 11 and 12 are used for a front window, it is preferable to use a glass plate having a high visible light transmittance so as not to obstruct the occupant's field of view. Examples of the material of the glass plates 11 and 12 include soda lime glass. The glass plates 11 and 12 preferably have a transmittance in the visible light region of 90% or more. Here, the visible light transmittance of the glass plates 11 and 12 is measured within a measurement wavelength range of 380 nm to 780 nm using a spectrophotometer (“UV-3100PC” manufactured by Shimadzu Corporation, JISK0115 compliant product). Of the transmittance at each wavelength. The visible light transmittance may be lowered by coloring a part or the whole of the glass plates 11 and 12. In this case, it is possible to block direct sunlight and to make it difficult to visually recognize the inside of the vehicle from outside the vehicle.

  Moreover, it is preferable that the glass plates 11 and 12 have a thickness of 1 mm or more and 5 mm or less. With such a thickness, the glass plates 11 and 12 excellent in strength and optical characteristics can be obtained.

  Next, the bonding layer 20 will be described. The bonding layer 20 is disposed between the pair of glass plates 11 and 12 and bonds the pair of glass plates 11 and 12 to each other. In the example shown in FIG. 3, a conductive mesh 30 is disposed between the bonding layer 20 and one glass plate 11. However, as described above, the conductive mesh 30 forms the opening 33 with a high opening ratio from the viewpoint of ensuring transparency or visibility. For this reason, as shown in FIG. 3, the bonding layer 20 and the one glass plate 11 are in contact with each other through the opening 33 of the conductive mesh 30. That is, one glass plate 11 is bonded to the bonding layer 20 through the opening 33 of the conductive mesh 30. For this reason, the conductive mesh 30 is embedded in the bonding layer 20.

  Further, the fine metal wires 31 of the conductive mesh 30 are in contact with one glass plate 11, particularly in surface contact. Therefore, the heat generated when the conductive mesh 30 is energized can be directly transmitted from the conductive mesh 30 to the one glass plate 11. That is, one glass plate 11 can be heated very efficiently. Thereby, the fog of the glass plate 11 can be efficiently removed, or the snow and ice adhering to the glass plate 11 can be efficiently melted, and the sight of the occupant can be ensured more quickly and reliably. In particular, in the illustrated example, the conductive mesh 30 is in contact with the concave surface of one glass plate 11. That is, one glass plate 11 is a glass plate exposed to the outside of the pair of glass plates 11 and 12 when applied to the automobile 1. Therefore, the glass plate 11 that is efficiently heated is a glass plate that should be freed from fogging due to condensation, and deposits made of snow, ice, and the like, thereby ensuring the visibility of the laminated glass 10 efficiently. It becomes possible to do.

  As such a joining layer 20, a layer made of a material having various adhesiveness or tackiness can be used. Moreover, it is preferable to use the bonding layer 20 having a high visible light transmittance. As a typical joining layer, the layer which consists of polyvinyl butyral (PVB) can be illustrated. The thickness of the bonding layer 20 is preferably 0.15 mm or more and 1 mm or less.

  The laminated glass 10 is not limited to the illustrated example, and may be provided with other functional layers expected to exhibit a specific function. In addition, one functional layer may exhibit two or more functions. For example, a function may be imparted to at least one of the pair of glass plates 11 and 12 and the bonding layer 20 of the laminated glass 10. Also good. Examples of functions that can be imparted to the laminated glass 10 include antireflection (AR) function, hard coat (HC) function having scratch resistance, infrared shielding (reflection) function, ultraviolet shielding (reflection) function, and polarization function. An antifouling function and the like can be exemplified.

  Next, an example of a method for manufacturing the laminated glass 10 will be described with reference to FIGS. 5-15 is sectional drawing which shows an example of the manufacturing method of the mesh sheet 40 in order.

  In the manufacturing method described below, the laminated glass 10 shown in FIG. 15 is manufactured. In the manufactured laminated glass 10, the conductive thin wires 31 forming the conductive mesh 30 are, as shown in FIG. 15, the conductive metal layer 35, the first dark color layer 36 covering the conductive metal layer 35, and the second dark layer 36. A dark color layer 37. In the manufacturing method described below, first, the mesh sheet 40 shown in FIG. 12 is manufactured, and then the laminated glass 10 is manufactured using the mesh sheet 40. Here, as shown in FIG. 12, the mesh sheet 40 includes a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42. ing. By using this mesh sheet 40, it is possible to easily and efficiently manufacture the laminated glass 10 that does not include the base material 41 used for forming the conductive mesh 30 and has excellent thermal conductivity. In particular, the above-described conductive mesh 30 contacts the glass plate 11, and the laminated glass 10 in which the bonding layer 20 is bonded to the glass plate 11 through the opening 33 of the conductive mesh 30 is easily and efficiently manufactured. Can do. In the following, the method for manufacturing the mesh sheet 40 will be described first with reference mainly to FIGS. 5 to 12, and then the laminated glass using the mesh sheet 40 mainly with reference to FIGS. 12 to 15. A method of manufacturing 10 will be described.

  In manufacturing the mesh sheet 40, first, a base material 41 is prepared as shown in FIG. The base material 41 functions as a base material when the conductive mesh 30 is created. The base material 41 may be made of any material as long as the conductive mesh 30 can be appropriately held, and examples thereof include polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polystyrene, and cyclic polyolefin. Moreover, considering the retainability of the conductive mesh 30, the ease of peeling from the bonding layer 20 and the conductive mesh 30, which will be described later, etc., the thickness of the substrate 41 should be 30 μm or more and 150 μm or less. Is preferred.

  Next, as shown in FIG. 6, a release layer 42 is provided on the base material 41. The peeling layer 42 has a function of assisting peeling of the base material 41 when the base material 41 is removed from the bonding layer 20 and the conductive mesh 30 in a process described later. As the peeling layer 42, for example, an interfacial peeling type peeling layer, an interlayer peeling type peeling layer, an aggregation peeling type peeling layer, or the like can be used. As the interface peeling type peeling layer, a peeling layer having relatively low adhesion to the bonding layer 20 and the conductive mesh 30 as compared with the adhesion to the substrate 41 can be suitably used. Examples of such a layer include a silicone resin layer, a fluororesin layer, and a polyolefin resin layer. In addition, a release layer that has relatively low adhesion to the base material 41 as compared with adhesion to the bonding layer 20 and the conductive mesh 30 can also be used. As the delamination type, a delamination layer that includes a plurality of layers of films and has relatively low adhesion between the plurality of delaminations compared to the adhesion between the bonding layer 20 and the conductive mesh 30 and the base material 41. Can be illustrated. Examples of the cohesive release type include a release layer in which a filler as a dispersed phase is dispersed in a base resin as a continuous phase. In addition, while the electroconductive mesh 30 shown by FIG. 3 contacts the glass plate 11, the laminated glass 10 with which the joining layer 20 joined to the glass plate 11 through the opening 33 of the electroconductive mesh 30 is produced efficiently. In view of this, it is preferable to use a release layer that has relatively low adhesion to the bonding layer 20 and the conductive mesh 30 compared to the adhesion to the substrate 41.

  Next, as shown in FIG. 7, a dark color film 36 a that forms the first dark color layer 36 of the conductive metal layer 35 is provided on the peeling layer 42. The dark color film 36a can be provided by, for example, a plating method including electric field plating and electroless plating, a sputtering method, a CVD method, a PVD method, an ion plating method, or a combination of these two or more. Various known materials can be used as the material of the dark color film 36a. For example, copper nitride, copper oxide, nickel nitride and the like can be exemplified.

  Next, as shown in FIG. 8, a metal film 35a for forming the conductive metal layer 35 is provided on the dark color film 36a. The metal film 35a is made of gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, tungsten, and alloys thereof, as already described as the material forming the conductive metal layer 35. It can be formed using one or more. The metal film 35a can be formed by a known method. For example, a method of attaching a metal foil such as a copper foil, a plating method including electroplating and electroless plating, a sputtering method, a CVD method, a PVD method, an ion plating method, or a method in which two or more of these are combined is adopted. can do.

  Next, as shown in FIG. 9, a resist pattern 39 is provided on the metal film 35a. The resist pattern 39 is a pattern corresponding to the pattern of the conductive mesh 30 to be formed. In the method described here, the resist pattern 39 is provided only on the portion finally forming the conductive mesh 30. The resist pattern 39 can be formed by patterning using a known photolithography technique.

  Next, as shown in FIG. 10, the metal film 35a and the dark color film 36a are etched using the resist pattern 39 as a mask. By this etching, the metal film 35 a and the dark color film 36 a are patterned into a pattern substantially the same as the resist pattern 39. As a result, a conductive metal layer 35 that forms a part of the conductive wire 31 is formed from the patterned metal film 35a. Further, a first dark color layer 36 that forms a part of the thin conductive wire 31 is formed from the patterned dark color film 36a.

  The etching method is not particularly limited, and a known method can be employed. Known methods include, for example, wet etching using an etchant, plasma etching, and the like. Thereafter, as shown in FIG. 11, the resist pattern 39 is removed.

  Finally, the second dark color layer 37 is formed on the surface 35a and the side surfaces 35b, 35c opposite to the first dark color layer 36 of the conductive metal layer 35. The second dark color layer 37 is formed by, for example, applying a darkening process (blackening process) to a part of the material forming the conductive metal layer 35, and then forming a metal oxide or metal sulfide from a part of the conductive metal layer 35. A second dark color layer 37 made of a material can be formed. Further, a second dark color layer 37 may be provided on the surface of the conductive metal layer 35 such as a coating film of dark color material or a plating layer of nickel or chromium. Alternatively, the second dark color layer 37 may be provided by roughening the surface of the conductive metal layer 35.

  A cross-sectional view of the mesh sheet 40 manufactured as described above is shown in FIG. The mesh sheet 40 includes a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 formed on the release layer 42.

  In the illustrated example, a plurality of fine conductive wires 31 forming the conductive mesh 30 are formed on the base material 41 via the release layer 42. The conductive thin wire 31 has a surface 31a opposite to the side facing the peeling layer 42, side surfaces 31b and 31c, and a surface 31d facing the peeling layer 42, and a surface 31d facing the peeling layer 42. The surface 31a opposite to the side facing the release layer 42 is parallel. The thin conductive wire 31 has a substantially square cross-sectional shape as a whole.

  The thin conductive wire 31 includes a first dark color layer 36 provided on the peeling layer 42, a conductive metal layer 35 provided on the first dark color layer 36, and a second covering the conductive metal layer 35. The dark color layer 37 is included. In other words, of the surface of the conductive metal layer 35, the first dark color layer 36 covers the surface 35 d facing the release layer 42, and the surface of the conductive metal layer 35 faces the release layer 42. The second dark color layer 37 covers the surface 35a and the side surfaces 35b and 35c on the opposite side to the side to be performed.

  Next, an example of a method for manufacturing the laminated glass 10 using the mesh sheet 40 described above will be described with reference to FIGS. FIGS. 13-15 is sectional drawing which shows an example of the manufacturing method of the laminated glass 10 in order.

  First, the joining layer 20 and the glass plate 12 are laminated on the mesh sheet 40 from the conductive mesh 30 side (upper side in FIG. 12), and then the mesh sheet 40, the joining layer 20 and the glass plate 12 are joined. 1 intermediate member 51 (intermediate member for laminated glass) is produced. For example, the mesh sheet 40 laminated with the bonding layer 20 and the glass plate 12 is carried into an autoclave device, and the mesh sheet 40, the bonding layer 20 and the glass plate 12 are heated and pressurized and taken out from the autoclave device. it can. In this case, if the inside of the autoclave apparatus is depressurized before heating and pressurizing the mesh sheet 40, the bonding layer 20, and the glass plate 12, the bonding layer 20, the interface between the bonding layer 20 and the mesh sheet 40, bonding It is possible to prevent bubbles from remaining at the interface between the layer 20 and the glass plate 12.

  Thereby, as shown in FIG. 13, the first intermediate member 51 in which the base material 41, the release layer 42, the conductive mesh 30, the bonding layer 20, and the glass plate 12 are laminated is obtained. The bonding layer 20 of the first intermediate member 51 has a first surface 20 a and a second surface 20 b, and the conductive mesh 30 is at least partially embedded in the first surface 20 a of the bonding layer 20. It is. In the illustrated example, the conductive mesh 30 is completely embedded in the bonding layer 20 from the first surface 20 a side of the bonding layer 20. As a result, the bonding layer 20 is in surface contact with the release layer 42 through the opening 33 of the conductive mesh 30. Further, the bonding layer 20 is in surface contact with the entire area of the release layer 42 exposed in the conductive mesh 30 33.

  In addition, in the example shown in FIGS. 13-15, although the glass plate 12 is shown with the flat thing for the simplification of illustration, in this example, the glass plate 12 is the side which faces the mesh sheet 40 ( The surface 12a on the lower side of the paper surface is curved so as to be a convex surface. In other words, the glass plate 12 is curved so that the surface 12b opposite to the side facing the mesh sheet 40 (upper side of the paper surface) is a concave surface. Therefore, for example, in FIG. 13, the bonding layer 20 and the mesh sheet 40 bonded to the glass plate 12 are also curved in the same manner as the glass plate 12. That is, the first intermediate member 51 is curved so that the surface 51a on the mesh sheet 40 side (the lower side of the paper surface) is a convex surface as a whole.

  Next, as shown in FIG. 14, the base material 41 of the mesh sheet 40 of the first intermediate member 51 is removed, and the second intermediate member 52 (intermediate member for laminated glass) is produced. In the example shown in FIG. 14, the base material 41 of the mesh sheet 40 is peeled from the first intermediate member 51 using the release layer 42 and removed from the first intermediate member 51. When an interfacial release type release layer having a layer with relatively low adhesion to the bonding layer 20 and the conductive mesh 30 as compared with the adhesion to the base material 41 is used as the release layer 42, the release layer 42 is used. And the bonding layer 20 and the conductive mesh 30 are peeled off. In this case, it is possible to prevent the release layer 42 from remaining on the bonding layer 20 and the conductive mesh 30 side. That is, the base material 41 is removed from the first intermediate member 51 together with the release layer 42. In the first intermediate member 51 from which the base material 41 and the release layer 42 are removed in this way, the bonding layer 20 is exposed in the opening 33 of the conductive mesh 30.

  On the other hand, as an exfoliation layer 42, when an interfacial exfoliation type exfoliation layer having relatively low adhesion with the base material 41 is used as compared with the adhesion with the bonding layer 20 and the conductive mesh 30, Peeling occurs between the peeling layer 42 and the base material 41. As the release layer 42, an interlayer release type having a plurality of films and having relatively low adhesion between the plurality of layers compared to the adhesion with the bonding layer 20 and the conductive mesh 30 and the base material 41. When a release layer is used, peeling occurs between the plurality of layers. In the case where an agglomerated exfoliation type release layer in which a filler as a dispersed phase is dispersed in a base resin as a continuous phase is used as the exfoliation layer 42, exfoliation occurs due to a cohesive failure in the exfoliation layer 42.

  Also in the second intermediate member 52, the bonding layer 20 has the first surface 20 a and the second surface 20 b, and the conductive mesh 30 is at least partially on the first surface 20 a of the bonding layer 20. Embedded.

  As described above, although not shown, the glass plate 12 is curved, so the bonding layer 20 and the conductive mesh 30 bonded to the glass plate 12 are also curved in the same manner. That is, the second intermediate member 52 is curved so that the surface 52a on the conductive mesh 30 side (the lower side of the paper surface) is a convex surface as a whole.

  And the glass plate 11 is laminated | stacked on the 2nd intermediate member 52 from the side of the joining layer 20 and the electroconductive mesh 30 (lower side of FIG. 14), and the joining layer 20 and the glass plate 11 are joined after that. In this example, the glass plate 11 is curved so that the surface 11 a on the opposite side (the lower side of the paper surface) of the glass plate 12 becomes a convex surface in accordance with the glass plate 12. In other words, the glass plate 11 is curved so that the surface 11b on the glass plate 12 side (upper side of the paper surface) is a concave surface. Therefore, the convex surface 12a of the curved glass plate 12 and the concave surface 11b of the curved glass plate 11 are laminated so as to face each other. The conductive mesh 30 is in surface contact with the concave surface 11 b of the curved glass plate 11.

  This joining can be performed in the same process as the production of the first intermediate member 51 described above. That is, the laminated glass plate 11 and the second intermediate member 52 can be carried into the autoclave device, and the glass plate 11 and the second intermediate member 52 can be heated and pressurized to be taken out from the autoclave device. Also in this case, if the inside of the autoclave apparatus is depressurized before heating and pressurizing the glass plate 11 and the second intermediate member 52, it is possible to suppress bubbles from remaining at the interface between the bonding layer 20 and the glass plate 11. be able to.

  In the production of the first intermediate member 51 described above, for example, the heating temperature may be lowered or the heating time may be shortened. In this case, in the manufactured first intermediate member 51, the bonding of the glass plate 12 to the conductive mesh 30 via the bonding layer 20 may not be complete. However, the glass plate 12 can be sufficiently bonded to the conductive mesh 30 through the bonding layer 20 by heating and pressurizing when the second intermediate member 52 is performed thereafter. That is, when the first intermediate member 51 is manufactured, the bonding of the glass plate 12 to the conductive mesh 30 via the bonding layer 20 is not only “main bonding” that completely completes the bonding but also “main bonding”. So-called “temporary bonding” may be used for temporary fixing.

  The laminated glass 10 manufactured as described above is shown in FIG. Laminated glass 10 is disposed between a pair of glass plates 11 and 12, a pair of glass plates 11 and 12, a bonding layer 20 that bonds the pair of glass plates 11 and 12, and a bonding layer 20 and a pair of glass plates. 11 and 12, and a conductive mesh 30 disposed between the one and the other. The laminated glass 10 can be manufactured using the mesh sheet 40 as described above. The conductive mesh 30 of the mesh sheet 40 can be produced on the base material 41 using various materials and various methods, and a desired pattern can be imparted with high accuracy. Therefore, it is possible to reduce adverse effects on visibility due to light diffusion and diffraction in the conductive fine wires 31 constituting the conductive mesh 30. Moreover, since the conductive mesh 30 and one of the pair of glass plates 11 and 12 are in contact, the heating efficiency of the glass plates 11 and 12 by the conductive mesh 30 can be increased. Furthermore, the number of interfaces in the laminated glass 10 can be reduced, and the thickness of the entire laminated glass 10 can be reduced. Accordingly, it is possible to suppress a decrease in optical characteristics, that is, a decrease in visibility. In addition, the weight of the laminated glass 10 as a whole can be reduced, which contributes to an improvement in the fuel consumption of the vehicle.

  The illustrated conductive mesh 30 of the laminated glass 10 is in surface contact with the glass plate 11. In such a laminated glass 10, the heating efficiency of the glass plate 11 by the conductive mesh 30 can be further increased.

  In the illustrated laminated glass 10, the concave surface 11b of the curved glass plate 11 and the convex surface 12a of the curved glass plate 12 are opposed to each other, that is, the pair of glass plates 11 and 12 are respectively opposed to the convex surface 12a and the concave surface. The conductive mesh 30 is in surface contact with the concave surface 11 b of the glass plate 11. In such a laminated glass 10, since the base material 41 does not exist between the glass plates 11 and 12, even if the pair of glass plates 11 and 12 are curved, the bonding layer 20 and the conductive mesh 30 are formed on the glass plate 11. , 12 can be easily followed. That is, the problem that the base material 41 generates wrinkles between the pair of glass plates 11 and 12 can be solved.

  In addition, the manufacturing method according to this example is based on a mesh sheet 40 having a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42. From the side of the mesh 30, the step of bonding the glass plate 12 through the bonding layer 20, the step of removing the base material 41, the side opposite to the side facing the glass plate 12 to the bonding layer 20, etc. Bonding the glass plate 11. In this example, when the base material 41 is peeled from the first intermediate member 51, the bonding layer 20 and the conductive mesh 30 are held on the glass plate 12, so that the base material 41 can be easily peeled off. Moreover, since the joining layer 20 and the glass plate 12 are joined to the mesh sheet 40 at a time, there is an advantage that the number of processes can be reduced.

  Note that, as described above, as the peeling layer 42, an interfacial peeling type peeling layer having relatively low adhesion to the base material 41 compared to the adhesion to the bonding layer 20 and the conductive mesh 30 is used. In this case, peeling occurs between the peeling layer 42 and the base material 41. As the release layer 42, an interlayer release type having a plurality of films and having relatively low adhesion between the plurality of layers compared to the adhesion with the bonding layer 20 and the conductive mesh 30 and the base material 41. When a release layer is used, peeling occurs between the plurality of layers. In the case where an agglomerated exfoliation type release layer in which a filler as a dispersed phase is dispersed in a base resin as a continuous phase is used as the exfoliation layer 42, exfoliation occurs due to a cohesive failure in the exfoliation layer 42. When these peeling layers 42 are used, in the second intermediate member 52 from which the base material 41 has been removed using the peeling layer 42, at least a part of the peeling layer 42 remains on the bonding layer 20 and the conductive mesh 30 side. Therefore, the bonding layer 20 is not exposed in the opening 33 of the conductive mesh 30. In this case, when the glass plate 11 is laminated on the second intermediate member 52, providing a further bonding layer 21 between the second intermediate member 52 and the glass plate 11 ensures the reliable bonding of the glass plate 11. Preferred above. In this case, the release layer 42 remaining on the bonding layer 20 and the conductive mesh 30 side becomes the support layer 45 that supports the conductive mesh 30. The laminated glass 10 obtained as a result is, as shown in FIG. 16, a pair of glass plates 11 and 12, a pair of bonding layers 20 and 21 disposed between the pair of glass plates 11 and 12, and a pair of bondings. A support layer 45 disposed between the layers 20 and 21, and a conductive mesh 30 disposed between one of the pair of bonding layers 20 and 21 and the support layer 45 and supported by the support layer 45. It becomes like this.

  Next, another example of the method for manufacturing the laminated glass 10 will be described with reference to the drawings as appropriate. In addition, all the manufacturing methods of the laminated glass 10 demonstrated below utilize the above-mentioned mesh sheet shown by FIG.

  First, the bonding layer 20 is laminated on the mesh sheet 40 shown in FIG. 12 from the conductive mesh 30 side (the upper side in FIG. 12), and the mesh sheet 40 and the bonding layer 20 are bonded together. A third intermediate member 53 (intermediate member for laminated glass) shown in FIG. The bonding between the bonding layer 20 and the mesh sheet 40 may be “temporary bonding” in a bonding state weaker than the bonding state in the final laminated glass 10, or similar to the bonding state in the final laminated glass 10. The “main joining” may be a joining state of As shown in FIG. 17, the bonding layer 20 of the third intermediate member 53 has a first surface 20 a and a second surface 20 b, and the conductive mesh 30 is the first surface 20 a of the bonding layer 20. Embedded at least partially. In the illustrated example, the conductive mesh 30 is completely embedded in the bonding layer 20 from the first surface 20 a side of the bonding layer 20. As a result, the bonding layer 20 is in surface contact with the release layer 42 through the opening 33 of the conductive mesh 30. Further, the bonding layer 20 is in surface contact with the entire area of the release layer 42 exposed in the conductive mesh 30 33.

  And the glass plate 12 is laminated | stacked on the 3rd intermediate member 53 from the side of the joining layer 20 (upper side of FIG. 17), the 3rd intermediate member 53 and the glass plate 12 are joined, and the 4th intermediate member 54 (laminated glass). Intermediate member). In the fourth intermediate member 54, the bonding between the bonding layer 20 and the glass plate 12 may be “temporary bonding” in a bonding state weaker than the bonding state in the final laminated glass 10, or the final bonding. The “main bonding” may be a bonding state similar to the bonding state in the glass 10.

  The fourth intermediate member 54 created as described above is the same as the first intermediate member 51 shown in FIG. Also in the fourth intermediate member 54, the bonding layer 20 has the first surface 20 a and the second surface 20 b, and the conductive mesh 30 is at least partially on the first surface 20 a of the bonding layer 20. Embedded. In particular, in the illustrated example, the conductive mesh 30 is completely embedded in the bonding layer 20 from the first surface 20 a side of the bonding layer 20. As a result, the bonding layer 20 is in surface contact with the release layer 42 through the opening 33 of the conductive mesh 30. Further, the bonding layer 20 is in surface contact with the entire area of the release layer 42 exposed in the conductive mesh 30 33.

  Since the glass plate 12 is curved as described above, the bonding layer 20 and the conductive mesh 30 bonded to the glass plate 12 are also curved in the same manner. That is, the fourth intermediate member 54 is curved so that the surface 54a on the conductive mesh 30 side (the lower side of the paper surface) is a convex surface as a whole.

  The laminated glass 10 is manufactured from the fourth intermediate member 54 shown in FIG. 13 by the same method as the method of manufacturing the laminated glass 10 from the first intermediate member 51 of FIG. 13 described in the above embodiment. Can do.

  The manufacturing method according to this example includes a conductive mesh 30 on a mesh sheet 40 having a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42. The step of bonding the bonding layer 20 from the side, the step of bonding the glass plate 12 to the bonding layer 20 from the side opposite to the side facing the mesh sheet, the step of removing the base material 41, and bonding The layer 20 includes a step of bonding another glass plate 11 from the side opposite to the side facing the glass plate 12. In this example, when the base material 41 is peeled from the fourth intermediate member 54, the joining layer 20 and the conductive mesh 30 are held by the glass plate 12, so that the base material 41 can be easily peeled off.

  Moreover, if the 3rd intermediate member 53 or the 4th intermediate member 54 mentioned above is used, the laminated glass 10 containing the useful electroconductive mesh 30 produced with the freedom degree of high design will be manufactured easily and stably. Can do. In particular, if the third intermediate member 53 or the fourth intermediate member 54 described above is used, the laminated glass 10 in which the conductive mesh 30 and one of the pair of glass plates 11 and 12 are in contact with each other can be manufactured easily and stably. You can also.

  Next, still another example of the method for manufacturing the laminated glass 10 will be described with reference to the drawings as appropriate.

  First, in the same manner as described above, the bonding layer 20 is laminated on the mesh sheet 40 from the conductive mesh 30 side (upper side in FIG. 12), and the mesh sheet 40 and the bonding layer 20 are bonded. A fifth intermediate member 55 (intermediate member for laminated glass) is produced. The obtained fifth intermediate member 55 can be the same as the third intermediate member 53 shown in FIG. Therefore, in the fifth intermediate member 55, the bonding between the bonding layer 20 and the mesh sheet 40 may be “temporary bonding” in a bonding state weaker than the bonding state in the final laminated glass 10. The “main bonding” may be a bonding state similar to the bonding state in the laminated glass 10. As shown in FIG. 17, the bonding layer 20 of the fifth intermediate member 55 has a first surface 20 a and a second surface 20 b, and the conductive mesh 30 is the first surface 20 a of the bonding layer 20. Embedded at least partially.

  Next, the base material 41 of the mesh sheet 40 is removed from the fifth intermediate member 55, and a sixth intermediate member 56 (an intermediate member for laminated glass) having the conductive mesh 30 and the bonding layer 20 shown in FIG. 18 is obtained. Make it. The base material 41 of the mesh sheet 40 is peeled off by the peeling layer 42 and removed from the fifth intermediate member 55. In the example shown in FIG. 18, the base material 41 of the mesh sheet 40 is peeled from the bonding layer 20 and the conductive mesh 30 together with the peeling layer 42. Also in the sixth intermediate member 56, the bonding layer 20 has the first surface 20 a and the second surface 20 b, and the conductive mesh 30 is at least partially on the first surface 20 a of the bonding layer 20. Embedded.

  And the glass plate 11 and the glass plate 12 are laminated | stacked from the both surfaces side of the 6th intermediate member 56 which has the electroconductive mesh 30 and the joining layer 20, ie, the electroconductive mesh 30 between a pair of glass plates 11 and 12. FIG. The laminated glass 10 is manufactured by arranging the bonding layer 20 and bonding the pair of glass plates 11 and 12 and the bonding layer 20 together. The obtained laminated glass 10 has the same configuration as the laminated glass 10 shown in FIG.

  In the manufacturing method according to this example, the conductive mesh 30 is formed on a mesh sheet having a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42. Between the step of bonding the bonding layer 20 from the side, the step of removing the base material 41, and the pair of glass plates 11 and 12, the conductive mesh 30 and the bonding layer 20 are disposed, Joining the joining layer 20. In this example, since the process of joining each glass plate 11 and 12 and the joining layer 20 is performed at once, the number of processes can be reduced.

  As mentioned above, the laminated glass 10 in this Embodiment is arrange | positioned between a pair of glass plates 11 and 12 and a pair of glass plates 11 and 12, and the joining layer 20 which joins a pair of glass plates 11 and 12 together. And a conductive mesh 30 disposed between the bonding layer 20 and one of the pair of glass plates 11 and 12.

  Further, the mesh sheet 40 in the present embodiment has a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42.

  Furthermore, the intermediate member for laminated glass in the present embodiment includes the bonding layer 20 and the conductive mesh 30 that is at least partially embedded in one of the first surface and the second surface of the bonding layer 20. doing.

  In such a laminated glass 10, the mesh sheet 40, and the intermediate members 51 to 56 for laminated glass, the conductive mesh 30 can be produced on the base material 41 using various materials and various methods. A desired pattern can be given to the conductive mesh 30 with high accuracy. Therefore, it is possible to reduce adverse effects on visibility due to light diffusion and diffraction in the conductive fine wires 31 constituting the conductive mesh 30.

  Moreover, in the laminated glass 10, since the electroconductive mesh 30 and one of a pair of glass plates 11 and 12 are contacting, the heating efficiency of the glass plates 11 and 12 by the electroconductive mesh 30 can be raised. Furthermore, the number of interfaces in the laminated glass 10 can be reduced, and the thickness of the entire laminated glass 10 can be reduced. Accordingly, it is possible to suppress a decrease in optical characteristics, that is, a decrease in visibility. In addition, the weight of the laminated glass 10 as a whole can be reduced, which contributes to an improvement in the fuel consumption of the vehicle.

  Furthermore, the method for manufacturing laminated glass in an example of the present embodiment includes a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42. A step of bonding the glass plate 12 to the mesh sheet 40 from the conductive mesh 30 side through the bonding layer 20, a step of removing the base material 41, a side facing the glass plate 12 to the bonding layer 20, and Includes a step of laminating other glass plates 11 from the opposite side and bonding the glass plates 11 and 12 and the bonding layer 20 together.

  In this manufacturing method, the mesh sheet 40 is first produced, and the laminated glass 10 is produced using the mesh sheet 40. When producing the mesh sheet 40, the conductive mesh 30 having a desired pattern can be easily and stably produced on the base material 41 and the release layer 42. Therefore, according to the method for producing the laminated glass 10 using the mesh sheet 40, the laminated glass 10 including the useful conductive mesh 30 produced with a high degree of design freedom can be produced easily and stably. be able to. In particular, the laminated glass 10 described above in which the conductive mesh 30 and one of the pair of glass plates 11 and 12 are in contact with each other can be easily and stably manufactured.

  Moreover, if the 5th intermediate member 55 or the 6th intermediate member 56 mentioned above is used, the laminated glass 10 containing the useful electroconductive mesh 30 produced with the high freedom degree of design will be manufactured easily and stably. Can do. In particular, if the fifth intermediate member 55 or the sixth intermediate member 56 described above is used, the laminated glass 10 in which the conductive mesh 30 and one of the pair of glass plates 11 and 12 are in contact can be manufactured easily and stably. You can also.

  In such a laminated glass manufacturing method, when the base material 41 is peeled from the first intermediate member 51, the bonding layer 20 and the conductive mesh 30 are held by the glass plate 12. It becomes easy. Moreover, since the joining layer 20 and the glass plate 12 are joined to the mesh sheet 40 at a time, the number of processes can be reduced.

  The laminated glass manufacturing method in another example of the present embodiment includes a base material 41, a release layer 42 provided on the base material 41, a conductive mesh 30 provided on the release layer 42, A step of bonding the bonding layer 20 to the mesh sheet 40 having the conductive mesh 30 side, and a step of bonding the glass plate 12 to the bonding layer 20 from the side opposite to the side facing the mesh sheet. The step of removing the base material 41 and the step of bonding the other glass plate 11 to the bonding layer 20 from the side opposite to the side facing the glass plate 12 are included.

  Also in this manufacturing method, the mesh sheet 40 is first produced, and the laminated glass 10 is produced using the mesh sheet 40. When producing the mesh sheet 40, the conductive mesh 30 having a desired pattern can be easily and stably produced on the base material 41 and the release layer 42. Therefore, according to the method for producing the laminated glass 10 using the mesh sheet 40, the laminated glass 10 including the useful conductive mesh 30 produced with a high degree of design freedom can be produced easily and stably. be able to. In particular, the laminated glass 10 described above in which the conductive mesh 30 and one of the pair of glass plates 11 and 12 are in contact with each other can be easily and stably manufactured.

  In such a laminated glass manufacturing method, when the base material 41 is peeled from the fourth intermediate member 54, the bonding layer 20 and the conductive mesh 30 are held by the glass plate 12. It becomes easy.

  In addition, a method for manufacturing a laminated glass in still another example of the present embodiment includes a base material 41, a release layer 42 provided on the base material 41, and a conductive mesh 30 provided on the release layer 42. , The step of bonding the bonding layer 20 from the conductive mesh 30 side, the step of removing the base material 41, and the conductive mesh 30 and the bonding layer between the pair of glass plates 11 and 12. 20 and arranging the glass plates 11 and 12 and the bonding layer 20 together.

  Also in this manufacturing method, the mesh sheet 40 is first produced, and the laminated glass 10 is produced using the mesh sheet 40. When producing the mesh sheet 40, the conductive mesh 30 having a desired pattern can be easily and stably produced on the base material 41 and the release layer 42. Therefore, according to the method for producing the laminated glass 10 using the mesh sheet 40, the laminated glass 10 including the useful conductive mesh 30 produced with a high degree of design freedom can be produced easily and stably. be able to. In particular, the laminated glass 10 described above in which the conductive mesh 30 and one of the pair of glass plates 11 and 12 are in contact with each other can be easily and stably manufactured.

  In such a method for producing laminated glass, the steps of bonding the glass plates 11 and 12 and the bonding layer 20 are performed at a time, so the number of steps can be reduced.

  As mentioned above, when manufacturing the laminated glass 10, the mesh sheet 40 or the intermediate members 51-56 are useful. And when manufacturing the laminated glass 10, the mesh sheet 40 or the intermediate members 51-56 are prepared beforehand, and the mesh sheet 40 or the intermediate members 51-51 prepared beforehand according to the production amount of the laminated glass 10 are prepared. 56 may be used in a necessary amount. That is, when manufacturing the laminated glass 10, the process until it manufactures the mesh sheet 40 or the intermediate members 51-56, and the process after it do not need to be implemented continuously. The mesh sheet 40 or the intermediate members 51 to 56 may be stored in a wound state wound around the winding core.

  Note that various modifications can be made to the above-described embodiment.

  For example, in the example shown in FIG. 4, the conductive mesh 30 has a mesh pattern in which honeycomb-shaped openings 33 having the same shape are regularly arranged. However, the present invention is not limited to such a mesh pattern. A mesh pattern in which openings 33 having the same shape such as triangles and rectangles are regularly arranged, a mesh pattern in which openings 33 having a different shape are regularly arranged, and irregular openings 33 such as a Voronoi mesh are irregular. Various mesh patterns such as a mesh pattern arranged in the above may be used.

  In the example shown in FIGS. 5 to 12, the second dark color layer 37 is formed on the surface 35 a and the side surfaces 35 b and 35 c opposite to the first dark color layer 36 of the conductive metal layer 35. However, the second dark color layer 37 may be formed only on the surface 35a of the conductive metal layer 35 opposite to the first dark color layer 36 or only on the side surfaces 35b and 35c of the conductive metal layer 35. .

  When the second dark color layer 37 is formed only on the surface 35a opposite to the first dark color layer 36 of the conductive metal layer 35, for example, on the conductive metal layer 35 after the step shown in FIG. The second dark color layer 37 and the resist pattern 39 are provided in order, and then the second dark color layer 37, the conductive metal layer 35, and the first dark color layer 36 may be etched using the resist pattern 39 as a mask.

  Further, when the second dark color layer 37 is formed only on the side surfaces 35b and 35c of the conductive metal layer 35, for example, the second dark color layer without removing the resist pattern 39 after the step shown in FIG. 37 is formed, and then the resist pattern 39 is removed.

  If the first dark color layer 36 is not necessary, the step of providing the first dark color layer 36 on the release layer 42 shown in FIG. 7 may be omitted.

  The cross-sectional shape of the thin conductive wire 31 is not limited to the substantially rectangular shape described above. For example, the width of the thin conductive wire 31 changes so as to become narrower along the normal direction of the mesh sheet 40 from the release layer 42. It may be. As such a cross-sectional shape, the surface 31d on the release layer 42 side and the surface 31a opposite to the release layer 42 are parallel, and the side surface 31b is peeled along the normal direction of the sheet surface of the mesh sheet 40. A taper surface that approaches the side surface 31c as it separates from the layer 42 is formed, and the side surface 31c also has a taper surface that approaches the side surface 31b as it separates from the release layer 42 along the normal direction of the sheet surface of the mesh sheet 40. Thus, the one having a substantially trapezoidal cross section as a whole can be exemplified. When the thin conductive wire 31 has such a cross-sectional shape, the thin conductive wire 31 forming the conductive mesh 30 can be reliably embedded in the bonding layer 20.

  Further, the conductive mesh 30 may be at least partially embedded in the second surface 20 b of the bonding layer 20. That is, the conductive mesh 30 may be in contact with the convex surface of the glass plate 12.

  The laminated glass 10 may be used for a rear window, a side window, or a sunroof of the automobile 1. Moreover, you may use for windows of vehicles other than a motor vehicle, such as a railway, an aircraft, a ship, and a spacecraft.

  Furthermore, the laminated glass 10 can also be used in places other than the vehicle, in particular, in places that divide the room from the outdoors, such as buildings, stores, and house windows.

  In addition, although the some modification with respect to embodiment mentioned above was demonstrated above, naturally, it is also possible to apply combining several modifications suitably.

DESCRIPTION OF SYMBOLS 1 Automobile 5 Front window 7 Power supply 10 Laminated glass 11 Glass plate 11a Convex surface 11b Concave surface 12 Glass plate 12a Convex surface 12b Concave surface 15 Connection part 16 Wiring part 20 Bonding layer 20a First surface 20b Second surface 21 Bonding layer 30 Conductive mesh 31 Conductive wire 32 Branch point 33 Opening 35 Conductive metal layer 35a Metal film 36 First dark color layer 36a Dark color film 37 Second dark color layer 39 Resist pattern 40 Mesh sheet 41 Base material 42 Release layer 45 Support layer 51 First intermediate Member 51a convex surface 52 second intermediate member 52a convex surface 53 third intermediate member 54 fourth intermediate member 54a convex surface 55 fifth intermediate member 56 sixth intermediate member

Claims (4)

A pair of glass plates;
A bonding layer disposed between the pair of glass plates and bonding the pair of glass plates;
A conductive mesh disposed between the bonding layer and one of the pair of glass plates ;
The conductive mesh is at least partially embedded in one of the first surface and the second surface of the bonding layer;
The conductive mesh includes a plurality of conductive thin wires,
The conductive thin wire has one side surface and the other side surface that face each other, and the one side surface forms a tapered surface that approaches the other side surface as the distance from the one of the pair of glass plates increases. The other side surface forms a tapered surface that approaches the one side surface as the distance from the one of the pair of glass plates increases.
Laminated glass in which a dark color layer is provided on at least a part of the surface of the thin conductive wire .   The laminated glass according to claim 1, wherein the conductive mesh is in surface contact with one of the pair of glass plates. Each glass plate is curved with opposing convex and concave surfaces,
The laminated glass according to claim 2, wherein the conductive mesh is in surface contact with one concave surface of the pair of glass plates. A bonding layer;
A conductive mesh at least partially embedded in the first surface of the bonding layer;
Equipped with a,
The conductive mesh includes a plurality of conductive thin wires,
The thin conductive wire has one side surface and the other side surface facing each other, and the one side surface forms a tapered surface that approaches the other side surface as the distance from the first surface increases. The side surface forms a tapered surface that approaches the one side surface as the distance from the first surface increases.
An intermediate member for laminated glass , wherein a dark color layer is provided on at least a part of the surface of the conductive wire .

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