WO2022050188A1 - 車両用合わせガラス - Google Patents
車両用合わせガラス Download PDFInfo
- Publication number
- WO2022050188A1 WO2022050188A1 PCT/JP2021/031550 JP2021031550W WO2022050188A1 WO 2022050188 A1 WO2022050188 A1 WO 2022050188A1 JP 2021031550 W JP2021031550 W JP 2021031550W WO 2022050188 A1 WO2022050188 A1 WO 2022050188A1
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- WO
- WIPO (PCT)
- Prior art keywords
- interlayer film
- glass plate
- functional member
- feeding body
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
Definitions
- the present invention relates to laminated glass for vehicles.
- a layer having various functions is provided between one glass and the other glass, and the layer is driven by power supply from an external power source so as to exhibit a desired function.
- a vehicle window glass that realizes this function is known (for example, Patent Document 1).
- the vehicle window glass of Patent Document 1 is provided with a coating as a layer between the outer glass and the inner glass, and the coating has a heating function.
- the vehicle window glass of Patent Document 1 has a coating that can be electrically heated and a current conductor provided for electrical connection between the two poles of the voltage source in order to exert a heating function.
- the current conductor is connected to the lead wire leading to the outside.
- the laminated glass is required to be provided with a plurality of functional members such as a dimming member and an image display member that require power supply from the outside of the laminated glass.
- a plurality of functional members are provided inside the laminated glass, it is necessary to connect a plurality of feeding bodies extending from the outside to the inside of the laminated glass according to the number of the laminated glass.
- a plurality of feeding leads (feeding bodies) connected to one heatable conductive coating are separated from the outside by current conductors on the upper side and the lower side inside the glass.
- the lead wire connected to the window glass for the vehicle is routed from the upper side to the current conductor on the lower side inside the glass, outside the glass, inside the body frame of the vehicle, and along the peripheral edge of the glass. I had to wire it.
- the present invention has been made in view of the above problems, and provides a laminated glass for vehicles that is easy to wire even when a plurality of feeding bodies are taken out outside the laminated glass.
- the laminated glass for vehicles according to one embodiment of the disclosure is a laminated glass for vehicles in which a first glass plate, an interlayer film, and a second glass plate are laminated in this order, and the interlayer film is a first. It has one interlayer film and a second interlayer film, and between the first interlayer film and the second interlayer film, a first functional member, a second functional member, and a first functional member. It has a first power feeding body electrically connected and a second feeding body electrically connected to a second functional member, and has a first function in a plan view of the first glass plate.
- the sex member and the second functional member are arranged inside the peripheral edge of the first glass plate, and the first feeding body and the second feeding body have only the feeding side which is one side of the first glass plate. It is characterized by intersecting and not overlapping in the plane of the first glass plate.
- the method for manufacturing a laminated glass for a vehicle is a method for manufacturing a laminated glass for a vehicle in which a first glass plate, an interlayer film, and a second glass plate are laminated in this order.
- It has a laminating step of preparing a laminated body and a first crimping step of heating and pressurizing the laminated body to crimp the laminated body
- the interlayer film has a first interlayer film and a second interlayer film.
- the first functional member to which the first feeding body is electrically connected and the second functional member to which the second feeding body is electrically connected are connected to the first interlayer film. It is located between and the second interlayer film, and in the plan view of the first glass plate, the first feeding body and the second feeding body intersect only the feeding side which is one side of the first glass plate.
- the step of arranging the first feeding body and the second feeding body so as not to overlap in the plane of the first glass plate is included, and the laminating step includes the feeding side of the first glass plate. It is characterized in that the following equations (1) and (2) are satisfied in the cross-sectional view including.
- FIG. 11 (a) is a side view of the laminated body
- FIG. 11 (b) is an excerpt of the broken line portion shown in FIG. 11 (a)
- FIG. 11 (c) is FIG. 11 It is an enlarged view near the feeding body in (a) and FIG. 11 (b).
- the notations “top” and “bottom” represent the top and bottom, respectively, when the laminated glass for a vehicle is mounted on a vehicle.
- the “side side” of laminated glass for vehicles represents the part connecting the upper side and the lower side.
- the “cross section” refers to a cut end when the laminated glass for a vehicle is cut in the thickness direction, or a side surface of the laminated glass for a vehicle. It should be noted that the side surface is not a term that limits only the surface including the side side.
- the "periphery” represents the outermost side of a predetermined member, and the “peripheral portion” represents the vicinity of the "periphery”. When a predetermined member has a hollow, the “periphery” is also referred to as an "outer edge” and may be distinguished from the “inner edge” which is the outer peripheral edge of the hollow.
- “same shape” and “same size” mean having the same shape and the same size in human appearance. And, unless otherwise noted, “abbreviation” means the same in human appearance. In addition, “to” representing a numerical range includes upper and lower limits.
- laminated glass for vehicles can be applied to, for example, a windshield, a rear glass, a side glass, a roof glass, a quarter glass and the like.
- Laminated glass for vehicles is also simply referred to as "laminated glass” below.
- FIG. 1 is a plan view of a laminated glass for a vehicle according to a first embodiment of the present invention, and is also a plan view showing a second embodiment and a third embodiment of the present invention described later.
- the laminated glass 100 for vehicles has a first glass plate 10 and a second glass plate 18 having a main surface having the same shape, and an interlayer film 20 arranged between them. Then, the first glass plate 10, the interlayer film 20, and the second glass plate 18 are laminated in this order. Further, the central axis (not shown) of the laminated glass 100 for a vehicle is a virtual line in the thickness direction passing through the center of gravity G of the laminated glass 100 for a vehicle.
- the laminated glass 100 for a vehicle has a substantially trapezoidal shape in a plan view, but is not limited to this.
- the laminated glass 100 for a vehicle may have, for example, a substantially triangular shape or a substantially rectangular shape in a plan view, depending on the portion of the vehicle on which the laminated glass 100 is mounted.
- the plan view of the laminated glass 100 for vehicles and the plan view of the first glass plate 10 are such that the laminated glass 100 for vehicles is placed on a horizontal plane with the first glass plate 10 facing up and vertically upward with respect to the horizontal plane.
- the cross-sectional view refers to viewing from a direction perpendicular to a predetermined cross section of the laminated glass for a vehicle.
- the side view refers to a view from a direction perpendicular to a predetermined side surface (for example, a side surface including the feeding side 10s) of the laminated glass for a vehicle.
- the vertical cross section of the laminated glass 100 for a vehicle may have a substantially wedge shape in which the thickness gradually decreases.
- Laminated glass having a vertical cross-sectional shape that is at least partially thickened from the bottom to the top is suitable for functioning as a head-up display (HUD), and can be particularly preferably used for a windshield. ..
- HUD head-up display
- the laminated glass 100 for vehicles may have such a cross-sectional shape
- at least one of the first glass plate 10, the second glass plate 18, and the interlayer film 20 has at least one cross section in the vertical direction.
- the portion may be substantially wedge-shaped.
- the laminated glass 100 for a vehicle includes a first functional member 14 and a second functional member 15 inside the interlayer film 20.
- the first functional member 14 and the second functional member 15 do not overlap. That is, in the plan view of the first glass plate 10, the first functional member 14 and the second functional member 15 are separated from each other.
- the peripheral edges of the two functional members 14 and 15 are both inside the peripheral edge of the first glass plate 10.
- “inside” represents the direction of the central axis passing through the center of gravity G of the laminated glass 100 for vehicles when viewed from the peripheral edge of a predetermined member (here, the first glass plate 10).
- the "outside” represents the peripheral direction of a predetermined member (here, the first glass plate 10) when viewed from the central axis passing through the center of gravity G of the laminated glass 100 for vehicles.
- first feeding body 16 and the second feeding body 17 are collectively referred to simply as a "feeding body".
- the end portion of the power feeding body on the functional member side may be electrically connected directly to the functional member, or may be electrically connected via a transparent conductive film or a foil-like conductor called a bus bar. ..
- the connection method may be any known means.
- the first feeding body 16 and the second feeding body 17, respectively, are flexible strip-shaped connecting members in which at least two foil-like conductors having different potentials during operation of the functional member are covered with an insulating material.
- the first feeding body 16 has foil-shaped conductors 36 and 36'inside the insulating material
- the second feeding body 17 has foil-shaped conductors 37 and 37'inside the insulating material, respectively.
- the foil-like conductors 36 and 36'of the first feeding body 16 are arranged apart in the insulating material so that they are not electrically short-circuited.
- the foil-like conductors 37 and 37'of the second feeding body 17 are also arranged apart in the insulating material so that they do not electrically short-circuit.
- the foil-shaped conductor 36' is arranged on the second feeding body 17 side, and the foil-shaped conductor 37'is arranged on the first feeding body 16 side. Therefore, the foil-shaped conductor 36'and the foil-shaped conductor 37'are the closest conductors in the first feeding body 16 and the second feeding body 17.
- the foil-shaped conductors 36, 36', 37, 37' are covered with an insulating material except for the end portion (contact point with the functional member).
- the portion shown by the alternate long and short dash line in FIG. 1 represents the outline of the portion covered with the insulating material
- the portion indicated by the dotted line represents the outline of the portion not covered by the insulating material.
- the first glass plate 10 and the second glass plate 18 can be configured to have no notch.
- the laminated glass 100 for a vehicle according to the present embodiment may be provided with a notch.
- the “notch” refers to a recess provided in a part of the peripheral edge of the first glass plate 10 or the second glass plate 18 in the plan view of the laminated glass 100 for a vehicle.
- the notch does not overlap the first glass plate 10 and the second glass plate 18 in the plan view of the first glass plate 10, and is adjacent to a part of the peripheral edge of the first glass plate 10. It can be said to be an area.
- the first feeding body 16 and the second feeding body 17 are usually made of a flexible material. In the plan view of the first glass plate 10, when these feeding bodies overlap each other, the conductor portion of one feeding body may be damaged after the laminated glass 100 for a vehicle is assembled to the vehicle. May come into contact with the conductor portion of the other feeder and cause a short circuit. Therefore, the first feeding body 16 and the second feeding body 17 do not overlap in the plane of the first glass plate 10 in the plan view of the first glass plate 10, so that a short circuit can be prevented. It is preferable that the first feeding body 16 and the second feeding body 17 do not overlap even outside the plane of the first glass plate 10 in the plan view of the first glass plate 10.
- the first feeding body 16 and the second feeding body 17 intersect only one side of the first glass plate 10 (hereinafter, also referred to as a feeding side).
- a feeding side the wiring in the body frame of the vehicle taken out to the outside of the laminated glass 100 for the vehicle can be simplified, and the handling becomes easy.
- the position of the feeding side is not particularly limited, but for example, it may be the upper side or the lower side of the first glass plate 10, and the lower side (feeding side 10s) close to the power source mounted on the vehicle is preferable.
- the first feeding body 16 and the second feeding body 17 are from the lower side feeding side 10s to the first functional member 14 and the second functional member 15. , Arranged approximately parallel. However, a part of the first feeding body 16 and the second feeding body 17 may not be substantially parallel between the feeding side 10s and each functional member.
- the first feeding body 16 may be electrically connected to the first functional member 14 via the vicinity of the side side and / or the vicinity of the upper side inside the laminated glass 100 for a vehicle.
- the second feeding body 17 may be electrically connected to the second functional member 15 via the vicinity of the side side and / or the vicinity of the upper side inside the laminated glass 100 for a vehicle.
- substantially parallel means up to ⁇ 20% with respect to the distance d1 between the first feeding body 16 and the second feeding body 17 (hereinafter, also simply referred to as “distance between feeding bodies”) in the feeding side 10s. Allow changes in distance.
- the distance d 1 between the feeding bodies refers to the distance from the end of the foil-shaped conductor 36'on the second feeding body side to the end of the foil-shaped conductor 37'on the first feeding body 16 side, and is along the feeding side 10s. Be measured.
- the distance d 1 between the feeding bodies is preferably 100 mm or less.
- the distance d 1 between the feeding bodies is 100 mm or less, it becomes easy to bundle the cables connected from the feeding body to the power supply mounted on the vehicle, and it is easy to bundle the cables, and each power is supplied from the branch point of the bundled cables.
- the distance to the body is shortened, and the cable is less likely to swing and move without being fixed to the body frame of the vehicle.
- the distance d 1 between the feeding bodies is more preferably 50 mm or less, and further preferably 35 mm or less.
- the first feeding body 16 and the second feeding body are viewed in plan view of the first glass plate 10. Compared with the arrangement in which the laminated glass 100 for a vehicle is exposed to the outside from the sides different from those of the 17th, the above-mentioned ease of bundling the cables and the effect of suppressing the shaking of the cables become remarkable.
- the first functional member 14 (second functional member 15) in order to protect the first functional member 14 (second functional member 15) from the physical impact, moisture and the like on the feeding side 10s, the first functional member 14 (second) from the feeding side 10s.
- the distance d 2 in the plane direction (Y-axis direction) to the peripheral edge of the functional member 15) is larger than 0 mm, preferably 5 mm or more, and more preferably 10 mm or more.
- the peripheral edges of the first functional member 14 and the second functional member 15 are preferably separated from the peripheral edge of the first glass plate by 5 mm or more, and more preferably 20 mm or more.
- the laminated glass 100 for vehicles may be provided with a band-shaped light-shielding portion 50 on the peripheral edge portion as shown in FIG.
- the light-shielding portion 50 can completely or partially conceal the peripheral edges of the functional members 14 and 15, the feeding bodies 16 and 17, the attachment portion to the frame body of the vehicle, and the foam residue described later.
- FIG. 2 is a cross-sectional view of the laminated glass 100 for a vehicle seen from the minus direction of the Y axis when the laminated glass 100 for a vehicle is cut at the position of X 1 to X 2 in FIG. 1 in the XZ plane (hereinafter, “X 1 ⁇ ”). X 2 cross section ").
- the laminated glass 100 for a vehicle is laminated in the order of the first glass plate 10, the interlayer film 20, and the second glass plate 18.
- the intermediate film 20 is laminated in the order of the first intermediate film 11, the first adjusting intermediate film 21, and the second intermediate film 12 from the first glass plate 10 side.
- the first functional member 14 and the second functional member 15 are both sandwiched between the first intermediate film 11 and the second intermediate film 12, and are present on substantially the same plane.
- the first glass plate 10 has a first main surface 10a on the side opposite to the first interlayer film 11 side and a second main surface 10b on the first interlayer film 11 side.
- the second glass plate 18 has a third main surface 18c on the side of the second interlayer film 12 and a fourth main surface 18d on the side opposite to the second interlayer film 12 side.
- unnecessary bubbles in the laminated glass 100 for vehicles due to a step generated at the peripheral edge of a functional member or a power feeding body at the time of laminating each member in a manufacturing process. ) May occur. Since the interlayer film 20 is deformed during the manufacturing process, foam residue may occur outside the vicinity of the step.
- the foam residue in the laminated glass 100 for a vehicle reduces the adhesive force between the first glass plate 10 and the second glass plate 18 via the interlayer film 20, and may easily cause damage due to an external impact. be. Therefore, in the laminated glass 100 for vehicles, it is preferable that the area of the remaining foam portion is small in the plan view of the first glass plate 10. Further, when the laminated glass 100 is attached to the vehicle as a windshield, if the driver sees the remaining bubbles, it may hinder the operation. Therefore, at least in the laminated glass 100 for vehicles, it is preferable that the foam residue in the opening, which will be described later, is inconspicuous.
- the laminated glass 100 in order to eliminate the step (gap) at the peripheral edge of the functional member and reduce the bubble residue, the laminated glass 100 is placed between the first interlayer film 11 and the second interlayer film 12.
- the first adjustment interlayer film 21 is provided.
- the inner edge shape of the first adjustment interlayer film 21 is substantially the same as the peripheral shape of the first functional member 14 and the second functional member 15. Then, the first functional member 14 and the second functional member 15 are accommodated in the hollow portion inside the outer edge of the first adjusting interlayer film 21.
- first functional member 14 and the second functional member 15 do not necessarily have to fit in the two hollows of the first adjusting interlayer film 21, which exist independently of each other, and are independent of each other.
- a plurality of functional members may be accommodated in one (large) hollow.
- at least a part of the peripheral edge of the first functional member 14 and the second functional member 15 may be in contact with the inner edge of the first adjusting interlayer film 21.
- the peripheral edges of the first functional member 14 and the second functional member 15 is in contact with the inner edge of the first adjustment interlayer film 21, so that in the contacting portions, each of them is formed at the time of laminating.
- a gap is less likely to be formed in the peripheral edge of the functional member, and the first glass plate 10 and the second glass plate 18 are easily brought into close contact with each other via the interlayer film 20.
- the ratio of the length in contact with the inner edge of the first adjusting interlayer film 21 among the lengths of the peripheral edges of the first functional member 14 and the second functional member 15 is 50% or more, respectively. Is preferable, 70% or more is more preferable, 90% or more is further preferable, and 100% is particularly preferable.
- the distance d 1 between the feeding bodies is preferably 50 mm or less, more preferably 45 mm or less, further preferably 35 mm or less, particularly preferably 25 mm or less, and most preferably 15 mm or less. Further, the distance d 1 between the feeding bodies is preferably, for example, 2 mm or more. If the distance d 1 between the feeding bodies is 2 mm or more, the feeding bodies are of each other even if the misalignment of the first functional member 14 and the second functional member 15 at the time of stacking and the mounting accuracy of the feeding bodies are taken into consideration. Duplicates are unlikely to occur.
- the distance d 1 between the feeding bodies may be 3 mm or more, 4 mm or more, or 5 mm or more.
- the distance d 2 from the feeding side 10s to the peripheral edge of the first functional member (second functional member) is preferably 65 mm or less, more preferably 60 mm or less, further preferably 40 mm or less, and particularly preferably 30 mm or less. It is preferably 20 mm or less, and most preferably 20 mm or less.
- the laminated interlayer film 20 flows under the high temperature and high pressure environment in the manufacturing process of the laminated glass 100 for vehicles.
- the smaller the distance d 2 the higher the probability that the bubbles generated in the laminated glass 100 for the vehicle will reach the feeding body side 10s and disappear, and the remaining bubbles can be reduced.
- FIG. 3 is a side view including the feeding side 10s of the laminated glass 100 for a vehicle.
- the first feeding body 16 is sandwiched between the first interlayer film 11 and the first adjusting interlayer film 21, and the second feeding body 17 is. It is sandwiched between the second interlayer film 12 and the first adjustment interlayer film 21.
- the laminated glass 100 for vehicles can firmly hold these feeding bodies.
- the first feeding body 16 is arranged on one main surface side of the first adjusting interlayer film 21, and the second feeding body 17 is The first adjustment interlayer film 21 is arranged on the other main surface (the main surface on the opposite side of the one surface) side, respectively.
- the first feeding body 16 and the second feeding body 17 are arranged on different main surfaces.
- the first functional member 14 and the second functional member 15 are present on substantially the same plane, but from the main surface of one glass plate (for example, the second main surface 10b of the first glass plate 10).
- the distance to the first feeding body 16 and the distance from the main surface (10b) of the glass plate to the second feeding body 17 are different.
- the laminated interlayer film 20 flows. Then, each of the interlayer films constituting the interlayer film 20 adheres to each other to reduce the area of the boundary surface and has an action of trying to make the thickness uniform.
- the interlayer film 20 can be formed. It flows vigorously and easily fills every corner between the glass plates. As a result, foam residue is less likely to occur, and the adhesion between the glass plate and the interlayer film 20 is improved.
- FIG. 4 is a side view including a feeding side 10s of the laminated glass 200 for a vehicle according to the second embodiment of the present invention.
- the points different from the laminated glass 100 for vehicles according to the first embodiment will be described, and the description of the first embodiment will be referred to for other points.
- the first feeding body 16 and the second feeding body 17 are arranged on one surface side of the first adjusting interlayer film 21 as shown in FIG. That is, the laminated glass 100 for a vehicle has the distance from the main surface of one glass plate (for example, the second main surface 10b of the first glass plate 10) to the first feeding body 16 and the main surface of the glass plate (for example). The distance from 10b) to the second feeding body 17 is substantially the same.
- the interlayer film 20 is provided with an auxiliary interlayer film 25 at least in a part between the first feeding body 16 and the second feeding body 17 (in the X-axis direction), whereby the foam residue can be reduced. Further, by providing the auxiliary interlayer film 25, the stress applied to the glass during crimping can be reduced. This makes it possible to reduce cracks due to primary stress during crimping and cracks due to residual stress in the market.
- the auxiliary interlayer film 25 may be made of the same material as at least one of the first interlayer film 11, the second intermediate film 12, and the first adjustment interlayer film 21. Further, the auxiliary interlayer film 25 extends in the Y-axis direction from between the first feeding body 16 and the second feeding body 17, for example, between the first functional member 14 and the second functional member 15. You may be doing it. In this case, if the auxiliary interlayer film 25 is arranged at least in a part between the first functional member 14 and the second functional member 15 (in the X-axis direction), it is preferable from the viewpoint of the effect of reducing foam residue, and all of them. It is more preferable to be arranged in. Further, it is more preferable that the auxiliary intermediate film 25, the first intermediate film 11, the second intermediate film and the first adjusting intermediate film 21 are all made of the same material.
- FIG. 5 is a side view including a feeding side 10s of the laminated glass 300 for a vehicle according to the third embodiment of the present invention.
- the outline of the first functional member 14 and the second functional member 15 is shown by a broken line, and the arrangement of the interlayer film 20, the functional members 14, 15 and the feeding bodies 16 and 17 is clarified. There is.
- the laminated glass 300 for vehicles has an interlayer film 20, and the interlayer film 20 is laminated in the order of the first intermediate film 11, the third intermediate film 13, and the second intermediate film 12. Further, a third interlayer film 13 is arranged between the first functional member 14 and the second functional member 15 (in the Z direction). The first functional member 14 and the first feeding body 16 are sandwiched between the first intermediate film 11 and the third intermediate film 13, and the second functional member 14 and the second feeding body 16 are fed. The body 17 is sandwiched between the second interlayer film 12 and the third interlayer film 13.
- the first functional member 14 and the first feeding body 16 and the second functional member 17 and the second feeding body 17 are separated by the third interlayer film 13. Has been done.
- the first functional member 14 and the second functional member 15 do not exist on the same plane.
- the first feeding body 16 and the second feeding body 17 are not coplanar.
- the distance from the second main surface 10b of the first glass plate 10 to the first feeding body 16 and the distance from the second main surface 10b of the first glass plate 10 to the second feeding body 17 are different. .. Therefore, under the high temperature and high pressure environment in the manufacturing process of the laminated glass 300 for vehicles, the interlayer film 20 actively flows, and it becomes easy to fill every corner between the glass plates. As a result, foam residue is less likely to occur, and the adhesion between the glass plate and the interlayer film is improved.
- the laminated glass 300 for vehicles according to the present embodiment may have a first adjusting interlayer film (not shown) between the first interlayer film 11 and the third interlayer film 13.
- the first adjusting interlayer film has a hollow having substantially the same shape as the outer edge shape of the first functional member 14 in the plan view of the laminated glass 100, and has the outer edge shape of the second functional member 15. It differs from the first embodiment in that it does not have substantially the same shape of hollowing out.
- a second adjusting interlayer film may be provided between the second interlayer film 11 and the third intermediate film 13.
- the outer edge shape of the second adjusting interlayer film has substantially the same shape as the first glass plate 10, and has a hollow having substantially the same shape as the outer edge shape of the second functional member 15.
- the second functional member 15 fits in the hollow portion inside the outer edge of the second adjusting interlayer film.
- These adjusting interlayer films improve the adhesion to the first glass plate 10 and the second glass plate 18 at the peripheral edge of each functional member, and are effective in reducing foam residue. Further, by providing these adjusting interlayer films, the stress applied to the glass during crimping can be reduced. This makes it possible to reduce cracks due to primary stress during crimping and cracks due to residual stress in the market.
- FIG. 6 is a plan view showing a laminated glass for vehicles according to a fourth embodiment, and is also a plan view showing a laminated glass for vehicles according to a fifth embodiment to be described later.
- the points different from the laminated glass 100 for vehicles according to the first embodiment will be described, and the description of the first embodiment will be referred to for other points.
- both the first functional member 14 and the second functional member 15 overlap in the plan view of the first glass plate 10. Both of the two functional members are present inside the peripheral edge of the first glass plate 10.
- the first functional member 14 and the second functional member 15 may have at least a part of the first glass plate 10 that overlaps with each other and does not overlap with each other in the plan view of the first glass plate 10.
- the peripheral edges of the two functional members overlap in the plan view of the first glass plate 10.
- the laminated glass 400 for vehicles has the following configuration in order to reduce foam residue by preventing gaps from being formed in the peripheral edges of these functional members.
- FIG. 7 is an X1 - X2 cross - sectional view of the laminated glass 400 for a vehicle according to the fourth embodiment.
- the interlayer film 20 is laminated in the order of the first intermediate film 11, the first adjusting intermediate film 21, the second adjusting intermediate film 22, and the second intermediate film 12 from the first glass plate 10 side. Will be done. Further, both the first functional member 14 and the second functional member 15 are sandwiched between the first interlayer film 11 and the second interlayer film 12, and do not exist on the same plane.
- the laminated glass 400 for a vehicle has the first adjusting interlayer film 21 on the outside of the peripheral edge of the first functional member 14 and the first adjusting interlayer film 21 on the outside of the peripheral edge of the second functional member 15.
- Each of the two adjusting interlayer films 22 is provided.
- the second adjusting interlayer film 22 has an outer edge shape substantially the same as the outer edge shape of the first glass plate 10 and a substantially same shape as the outer edge shape of the second functional member 15. Has an inner edge shape (hollow).
- the first adjusting interlayer film 21 is the first. It may be arranged outside the periphery of both the functional member 14 and the second functional member 15. In that case, the second adjustment interlayer film 22 may not be arranged, and only the first adjustment intermediate film 21 may be arranged.
- the laminated glass 400 for vehicles may have an adhesive (not shown) between the first functional member 14 and the second functional member 15 to reduce foam residue between the functional members. ..
- the interlayer film 20 has a first adjusting interlayer film 21, or a first adjusting interlayer film 21 and a second adjusting interlayer film 22. Therefore, in the laminated glass 400 for vehicles, the interlayer film 20 and the first glass plate 10 and the second glass plate 18 are easily brought into close contact with each other at the peripheral edge of each functional member, and the foam residue can be reduced.
- the stress applied to the glass during crimping can be reduced. This makes it possible to reduce cracks due to primary stress during crimping and cracks due to residual stress in the market.
- the effect of the first adjusting interlayer film 21 and the second adjusting interlayer film 22 is that the thickness of the first adjusting interlayer film 21, or the first functional member 14 and the second functional member 15 is sufficient. It is remarkable when it is 0.15 mm or more, and particularly remarkable when it is 0.18 m or more.
- FIG. 8 is a side view including the feeding side 10s of the laminated glass 400 for a vehicle according to the fourth embodiment.
- the first feeding body 16 and the second feeding body 17 are firmly held by the interlayer film 20.
- the first feeding body 16 is sandwiched between the first adjusting intermediate film 21 and the second adjusting intermediate film 22, but is sandwiched between the first intermediate film 11 and the first adjusting intermediate film 21. May be done.
- the second feeding body 17 may be sandwiched between the first adjusting interlayer film 21 and the second adjusting interlayer film 22.
- (Fifth Embodiment) 9 and 10 are a cross - sectional view of X1 - X2 of the laminated glass 500 for a vehicle according to the fifth embodiment of the present invention shown in FIG. 6, and a side view including a feeding body side 10s.
- the interlayer film 20 of the laminated glass 500 for a vehicle has a third layer between the first functional member 14 and the second functional member 15 in the thickness direction (Z-axis direction). It differs from the fourth embodiment in that it has an interlayer film 13. Then, the first functional member 14 is sandwiched between the first intermediate film 11 and the third intermediate film 13, and the second functional member 15 is the second intermediate film 12 and the third intermediate film 13. It is sandwiched between and.
- the first feeding body 16 is sandwiched between the first adjusting intermediate film 21 and the third intermediate film 13, and the second feeding body 17 is sandwiched between the second adjusting intermediate film 22 and the second adjusting intermediate film 22. It is sandwiched between the second interlayer film 12 and the second interlayer film 12.
- the first feeding body 16 is sandwiched between the first adjusting intermediate film 21 and the second adjusting intermediate film 22, it may be sandwiched between the first intermediate film 11 and the first adjusting intermediate film 21. good.
- the second feeding body 17 may be sandwiched between the third interlayer film 13 and the second adjusting interlayer film 22.
- the first functional member 14 and the first feeding body 16 and the second functional member 15 and the second feeding body 17 are the third. It is separated in the thickness direction by the interlayer film 13 of the above. Therefore, the first functional member 14 and the second functional member 15 do not exist on the same plane. Further, the first feeding body 16 and the second feeding body 17 also do not exist on the same plane.
- the distance from the second main surface 10b of the first glass plate 10 to the first feeding body 16 and the distance from the second main surface 10b of the first glass plate 10 to the second feeding body 17 are different. Therefore, under the high temperature and high pressure environment in the manufacturing process of the laminated glass 500 for vehicles, the interlayer film 20 actively flows, and it becomes easy to fill every corner between the glass plates. As a result, the laminated glass 500 for vehicles is less likely to generate foam residue, and the adhesive force between the glass plate and the interlayer film 20 is also improved.
- each component included in the laminated glass 100 to 500 for vehicles according to each embodiment of the present invention will be described in more detail.
- the reference numerals used in FIGS. 1 to 10 are used, but the reference numerals of the laminated glass for vehicles are omitted.
- the first glass plate 10 and the second glass plate 18 may have a flat plate shape, at least one of them may be curved, or both may be curved.
- the first glass plate 10 and the second glass plate 18 may each have a single curved shape (cylindrical) having a single bending direction, or may have a compound shape curved in two orthogonal directions.
- the radius of curvature of the first glass plate 10 is substantially the same as the radius of curvature of the second glass plate 18 (including the case where both are flat plates) or larger than the radius of curvature of the second glass plate 18. That is, the ratio of the minimum radius of curvature (r 2 ) of the second glass plate 18 to the minimum radius of curvature (r 1 ) of the first glass plate 10 is preferably 1 ⁇ r 1 / r 2 .
- r 1 and r 2 are preferably 500 mm or more, and more preferably 700 mm or more in order to reduce the occurrence of wrinkles and fluoroscopic distortion of the interlayer film 20.
- the maximum radius of curvature (R 1 ) of the first glass plate 10 and the maximum radius of curvature (R 2 ) of the second glass plate 18 are 100,000 mm or less. It is preferably 50,000 mm or less, more preferably 30,000 mm or less, and particularly preferably 20,000 mm or less.
- first glass plate 10 or the second glass plate 18 may be arranged inside the vehicle.
- the glass plate corresponding to the larger value of r1 and r2 is arranged on the outside of the vehicle in order to maintain the strength of the laminated glass. It is preferable to be done.
- the first glass plate 10 may be arranged on the outside of the vehicle, and the second glass plate 18 may be arranged on the inside of the vehicle.
- first glass plate 10 and the second glass plate 18 conventionally known inorganic glass or organic glass used for the window glass of a vehicle can be used.
- the composition of the first glass plate 10 and the composition of the second glass plate 18 may be the same or different.
- the inorganic glass include ordinary soda lime glass, aluminosilicate glass, borosilicate glass, non-alkali glass, quartz glass and the like.
- These glass plates are manufactured by any known method such as a float method, a fusion method, a rollout method, and a down draw method.
- Gravity molding, press molding, or the like is used for bending and molding of inorganic glass, and the glass plate is bent and molded at a high temperature.
- the inorganic glass may be unreinforced glass obtained by molding molten glass into a plate shape and slowly cooling it, and may be subjected to strengthening treatment such as physical strengthening (for example, wind cooling strengthening) or chemical strengthening, if necessary. ..
- organic glass examples include polycarbonate resin, acrylic resin, polystyrene resin, aromatic polyester resin, polyester resin, polyarylate resin, polycondensate of halogenated bisphenol A and ethylene glycol, acrylic urethane resin, and acrylic halide containing aryl halides. And so on.
- a polycarbonate resin is preferable because a lightweight and flexible sheet can be obtained.
- 2 or more kinds of the said resin may be used together.
- the first glass plate 10 and the second glass plate 18 are preferably soda lime glass or non-alkali glass, among the above-exemplified examples. Float glass is preferable for the first glass plate 10 and the second glass plate 18.
- Both the inorganic glass and the organic glass are usually colorless, but they may be transparent and may be colored.
- so-called privacy glass having a dark color such as gray may be used.
- the privacy glass has an effect of reducing the transmission of sunlight from the outside of the vehicle to the inside of the vehicle and an effect of improving the aesthetics from the inside and outside of the vehicle while making it difficult to see the inside of the vehicle from the outside of the vehicle.
- Privacy glass is preferably used for parts other than the windshield, particularly the roof, the side glass at the rear of the vehicle, the rear glass, the quarter glass, and the like.
- the inorganic glass and the organic glass can contain an infrared ray shielding material, an ultraviolet ray shielding material and the like.
- the thickness of the first glass plate 10 and the second glass plate 18 is appropriately selected depending on the type and portion of the vehicle on which the laminated glass for the vehicle is mounted, but is generally 0.1 mm to 10 mm, respectively. can. In order to keep the density (area density) per unit area determined by the mass and surface area of the laminated glass 100 for vehicles within a preferable range, the thickness of the first glass plate 10 and the second glass plate 18 is 0. It is preferably .3 mm to 2.6 mm. The thicknesses of the two glass plates 10 and 18 may be the same or different from each other.
- the difference between the thickness of the first glass plate 10 and the thickness of the second glass plate 18 is preferably 0.3 mm to 1.5 mm from the viewpoint of impact resistance against flying stones. More preferably, it is 0.3 mm to 1.3 mm.
- the thickness of the glass plate located on the outside of the vehicle is preferably 1.1 mm or more, more preferably 1.3 mm or more, further preferably 1.6 mm or more, and more preferably 1.8 mm or more. Especially preferable.
- the thickness of the glass plate located on the outside of the vehicle is preferably 2.6 mm or less, more preferably 2.1 mm or less.
- the thickness of the glass plate located inside the vehicle is preferably 0.3 mm or more, more preferably 0.5 mm or more, further preferably 0.7 mm or more, and further preferably 1.1 mm.
- the above is particularly preferable, and 1.6 mm or more is most preferable.
- the thickness of the glass plate located inside the vehicle is preferably 2.6 mm or less, more preferably 2.1 mm or less.
- the two glass plates 10 and 18 have a coating film that imparts water-repellent function, hydrophilic function, anti-fog function, etc. laminated on at least one of the surfaces exposed to the atmosphere (first main surface 10a, fourth main surface 18d). May be done. Further, the two glass plates 10 and 18 usually include a metal layer such as a low-radiation coating, an infrared light-shielding coating, a conductive coating, etc. on the surfaces facing each other (second main surface 10b, third main surface 18c). The coating film may be laminated.
- interlayer film 20 those generally used for laminated glass can be used, and examples thereof include thermoplastic resins, thermosetting resins, and photocurable compositions, which can be formed by solidifying these resins. .. In addition, “solidification” here includes hardening.
- the interlayer film 20 has various functions such as facilitation of adhesion between members, shock absorption, and sound insulation described later. From the viewpoint of adhesiveness, among the first intermediate film 11, the second intermediate film 12, the third intermediate film 13, the first adjusting intermediate film 21, the second adjusting intermediate film 22, and the auxiliary intermediate film 25. It is preferable that at least two or more of them are made of the same material, and it is more preferable that the interlayer film 20 is made of the same material.
- the interlayer film 20 is provided with sound insulation by laminating layers having different glass transition points.
- the layer at the intermediate position in the thickness direction is a core layer having a glass transition point of less than 15 ° C., and the core layer (intermediate layer) is sandwiched.
- the two layers may be a skin layer having a glass transition point of 15 ° C. or higher.
- the interlayer film 20 may be configured to be laminated in the order of a skin layer, a core layer, a skin layer, a core layer, and a skin layer.
- the laminated glass for vehicles according to each embodiment has a sound insulating effect in addition to the effect of reducing foam residue.
- thermoplastic resin polyvinyl acetal resin such as polyvinyl butyral resin (PVB), polyvinyl chloride resin (PVC), saturated polyester resin, polyurethane resin, ethylene-vinyl acetate copolymer resin (EVA), ethylene-ethyl acrylate copolymerization Systematic resins, cycloolefin polymers (COP) and the like can be mentioned.
- the thermoplastic resin used for the interlayer film 20 is preferably PVB, EVA, polyurethane resin or the like. These thermoplastic resins may be used alone or in combination of two or more.
- the thermosetting resin is typically a silicone-based resin or an acrylic-based resin.
- the photocurable composition typically contains a curable compound (A) having a curable group and a photopolymerization initiator (B).
- the photocurable composition may contain a non-curable component other than the photopolymerization initiator (B), if necessary.
- the non-curable component include a non-curable polymer (C), a chain transfer agent (D), and other additives.
- the curable compound (A) examples include acrylic, silicone, urethane acrylate, and epoxy compounds.
- the curable compound (A) is preferably a silicone-based compound or a urethane acrylate-based compound because the storage elastic modulus G'can be easily adjusted to 5 ⁇ 10 2 Pa to 1 ⁇ 10 7 Pa.
- the curable compound (A) is more preferably urethane acrylate type in that the gel fraction can be easily adjusted to 1% to 50%.
- the interlayer film 20 may use one of these resins alone or in combination.
- materials having different properties at the central portion and the peripheral portion of the laminated glass for vehicles may be used.
- the peripheral portion of the laminated glass for a vehicle is a region in which the first adjusting interlayer film 21 and the second adjusting interlayer film 22 are arranged in a plan view of the first glass plate 10, and the central portion is an outer peripheral portion. It may be an area inside the area.
- the interlayer film 20 contains any one of a thermoplastic resin, a thermosetting resin, and a photocurable composition as a main component.
- the interlayer film 20 is an infrared absorber, an ultraviolet absorber, a colorant, a fluorescent agent, an adhesive adjuster, a coupling agent, a surfactant, an antioxidant, a heat stabilizer, a light stabilizer, a dehydrating agent, and a defoaming agent. , Antistatic agent, flame retardant and other various additives can be contained in one or more.
- the colored layer made of a colorant can be used as a so-called shade band layer that reduces the glare of a vehicle occupant due to sunlight.
- the shade band layer may be provided in a band shape along the upper side thereof, for example, when the laminated glass for a vehicle is attached to the vehicle.
- the total thickness of the interlayer film may be 0.1 mm to 3.1 mm from the viewpoint of ensuring handleability.
- the thickness per interlayer film is preferably 0.3 mm to 3.0 mm from the viewpoint of ensuring penetration resistance, and more preferably 0.3 mm to 1.2 mm due to the weight limitation of the laminated glass, and more preferably 0.3 mm to 1.2 mm. 0.8 mm is particularly preferable.
- the thickness of each interlayer film may be the same or different.
- the functional member is a layer in which electric power is supplied from a power source by a power feeding body to drive electric power.
- the electric power driven functional member may be a dimming layer, a light emitting layer, an electric heating layer, or the like.
- the electric power driven portion constitutes a flat surface as a whole.
- the infrared light-shielding coating film and the resin film that emits light by ultraviolet rays which are arranged between the first glass plate 10 and the second glass plate 18, form a flat surface as a whole, but are electric power. Since it is not driven, it is not included in the functional members.
- the first functional member 14 and the second functional member 15 may be layers having the same function or layers having different functions.
- the first functional member 14 may be a light control layer
- the second functional member 15 may be a light emitting layer
- the first functional member 14 may be a light emitting layer
- the second functional member 15 may be an electric heating layer.
- the first functional member 14 and the second functional member 15 may both be a dimming layer.
- the dimming layer may have a function of changing the visible light transmittance by electric power drive, and may change the color.
- Examples of the light control layer include an electrochromic (EC) film, a liquid crystal (LC) film, a suspended particle device (SPD) film, an electrokinetic (EK) film, and the like.
- EC electrochromic
- LC liquid crystal
- SPD suspended particle device
- EK electrokinetic
- the dimming layer can also be used as a shade band.
- the light emitting layer may contain a material that emits light by power driving.
- a cold cathode fluorescent lamp CCFL
- a light emitting diode LED
- OLED organic light emitting diode
- the light emitting layer can also be used as a display for indicating a direction or calling attention.
- the electric heating layer may include a layer that generates heat by being driven by electric power, and may contain at least one of a metal, a metal oxide, and a conductive polymer.
- the electric heating layer may have any shape, and examples thereof include a thin film shape and a fine wire shape. Further, the heating layer may be specifically a heating film for preventing fogging, a heating wire for melting ice, or the like.
- the direction in which the foil-shaped conductors 36 and 36'is separated from each other may be the thickness direction of the laminated glass for vehicles.
- the direction in which the first feeding body 16 is separated from each other is preferably the plane direction. This also applies to the foil-shaped conductors 37 and 37'in the second feeding body 17.
- the foil-shaped conductor 36'and the foil-shaped conductor 37' may be conductors driven at the same potential. Specifically, if the foil-shaped conductor 36'and the foil-shaped conductor 37' are grounded, they will not short-circuit even if they come into contact with each other, and damage to the functional member can be prevented.
- the insulating material may be a thermosetting resin or a thermoplastic resin.
- the insulating material include polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polybutylene terephthalate (PBT), polyamide resins such as nylon 6, nylon 66 and nylon 610, polyimides and polyamideimides.
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PBT polybutylene terephthalate
- polyamide resins such as nylon 6, nylon 66 and nylon 610
- polyimides and polyamideimides polyamideimides.
- Polycarbonate resin such as polyetherimide, fluororesin, polyether sulfone, polyether ketone, polyether sulfide, polyarylate, polyester ether, total aromatic polyamide, polyaramid, polypropylene (PP), polycarbonate (PC), liquid crystal polymer Etc. may be used.
- a polyimide resin such as polyimide that can withstand high temperature and high pressure conditions at the time of manufacturing laminated glass for vehicles can be preferably used as the insulating material.
- the resin used as the insulating material is not particularly limited as long as it is a material having insulating properties, flexibility, and heat resistance.
- a metal such as gold, silver, or copper is preferable, and copper is more preferable. Further, the material may use carbon instead of metal.
- the foil-like conductors may be made of the same material or different materials.
- the thickness of the foil-like conductor depends on the type of functional member, but in order to correspond to the functional member used for laminated glass for vehicles, the width of the feeding body becomes wider if it is 0.01 mm or more per layer. Not too much, it is preferable in handling, 0.05 mm or more is more preferable, and 0.07 mm or more is further preferable. Further, the thickness of the foil-like conductor is preferably 0.6 mm or less per layer because the feeding body does not become excessively thick, more preferably 0.4 mm or less, further preferably 0.2 mm or less, and 0.1 mm or less. Especially preferable.
- the thickness of the feeding body is preferably 0.1 mm or more in the portion including the foil-like conductor because it is difficult to break the wire even when exposed to the vibration of the vehicle, and more preferably 0.15 mm or more, 0.2 mm or more. Is even more preferable. Further, the thickness of the feeding body is preferably 0.8 mm or less in the portion including the foil-like conductor because the influence of the step can be suppressed by the auxiliary interlayer film or the like, more preferably 0.6 mm or less, and 0.4 mm or less. The following is more preferable, and 0.3 mm or less is particularly preferable.
- the thickness of the feeding body is preferably 0.08 mm or more in the portion not including the foil-like conductor because it is difficult to break the wire, more preferably 0.1 mm or more, still more preferably 0.12 mm or more.
- the upper limit of the thickness of the feeding body in the portion not including the foil-shaped conductor may be generally equal to or less than the thickness of the portion including the foil-shaped conductor.
- the laminated glass for vehicles has, for example, a light-shielding portion 50 having a width overlapping at least a part of the peripheral edges of the first functional member 14 and the second functional member 15 from the feeding side 10s toward the central portion. You may. When the width of the light-shielding portion 50 is 5 mm or more inward from the peripheral edge of the first functional member 14 or the second functional member 15, the peripheral edge of the functional member can be effectively concealed, which is preferable.
- the laminated glass for a vehicle When the laminated glass for a vehicle has a light-shielding portion 50, the laminated glass for a vehicle is a portion that overlaps with the first glass plate 10 and does not have the light-shielding portion 50 in the plan view of the first glass plate 10. It has an opening to ensure the driver's view.
- the width of the light-shielding portion 50 is preferably 50 mm or less, more preferably 30 mm or less, and more preferably 20 mm or less inward from the peripheral edge of the first functional member 14 or the second functional member 15 in order to secure the area of the opening. Is particularly preferable.
- Examples of the material constituting the light-shielding portion 50 include organic ink, inorganic ceramics, and a colored interlayer film.
- the light-shielding portion 50 can be formed by, for example, applying organic ink or inorganic ceramics on a glass surface by screen printing or the like and drying the light-shielding portion 50.
- the color of the light-shielding portion 50 may be any color as long as it can block visible light to the extent that it can be concealed, at least in the portion where concealment is required, but dark colors such as black, brown, gray, and navy blue are preferable, and black is preferable. More preferred.
- the light-shielding portion 50 is composed of a ceramic layer on a glass surface is shown.
- the ceramic layer constituting the light-shielding portion 50 may be provided on at least one of the second main surface 10b and the fourth main surface 18d, for example.
- the light-shielding portion 50 provided on the second main surface 10b contributes to the concealing property when viewed from the outside of the vehicle
- the light-shielding portion 50 provided on the fourth main surface 18d contributes to the concealing property when viewed from the inside of the vehicle.
- a method for manufacturing a laminated glass 100 for a vehicle in which a first glass plate 10, an interlayer film 20, and a second glass plate 18 are laminated in this order includes (1) a laminating step and (2) a first crimping step. After going through the step (1), the process proceeds to the step (2). Further, the manufacturing method may include (3) a second crimping step after passing through the first crimping step of (2).
- the interlayer film 20 has a first intermediate film 11 and a second intermediate film 12. Then, in the laminating step, specifically, the first functional member 14 to which the first feeding body 16 is connected and the second functional member 15 to which the second feeding body 17 is connected are connected. This is a step of arranging the first interlayer film 11 and the second interlayer film 12 so as to be located between the first interlayer film 11 and the second interlayer film 12. In the laminating step, it is preferable that the peripheral edges of the first functional member 14 and the second functional member 15 are arranged so as to be inside the peripheral edge of the first glass plate 10.
- a laminated body is prepared so that the laminated glass 100 for vehicles shown in FIGS. 1 to 3 can be obtained when the first crimping step of (2) and the second crimping step of (3) described later are performed. It can be said to be a process.
- at least a part of the first feeding body 16 and the second feeding body 17 is only the feeding side 10s which is one side of the first glass plate 10.
- the first feeding body 16 and the second feeding body 17 intersect each other and do not overlap in the plane of the first glass plate 10.
- the inventors have described the first crimping step (2) in the first crimping step of (2) and the portion described later in the portion where the laminated body overlaps with the feeding body and the portion where the laminated body does not overlap with the feeding body. Attention was paid to the change in the thickness of the interlayer film 20 and the feeding body in the second crimping step (3) and the like. Then, as a result of diligent studies, the inventors have found the following equations (1) and (2) using a value of 0.8 as a weighting. (1) In the laminating step, the foam residue of the laminated glass 100 for a vehicle can be reduced by satisfying the equation (1) in the side view including the feeding side 10s of the first glass plate 10. Further, by satisfying the formula (2) at the same time, the foam residue can be further reduced, which is preferable.
- the first glass plate 10, the interlayer film 20, and the second glass plate 10 are satisfied by satisfying the equation (3) in the side view including the feeding side 10s of the first glass plate 10. It is possible to manufacture a laminated glass 100 for a vehicle in which the glass plate 18 of the above is sufficiently adhered. Further, by satisfying the formula (4) at the same time, the laminated glass 100 for a vehicle can be more preferably manufactured. Equation (3): 1.2 ⁇ (t F1 + ti F1) ⁇ ti Equation (4): 1.2 ⁇ (t F2 + ti F2) ⁇ ti
- FIGS. 11 (a) to 11 (c) are side views including the feeding side 10s of the first glass plate 10 of the laminated body.
- FIG. 11A shows a portion where the laminated body overlaps with the first feeding body 16, a portion where the laminated body overlaps with the second feeding body 17, and a laminated body in a plan view of the first glass plate 10.
- Excerpts shown in FIG. 11B are shown by broken lines in the portion between the first feeding body 16 and the second feeding body 17 in the plane direction (X-axis direction).
- 11 (b) shows an excerpt of the broken line portion of FIG. 11 (a).
- 11 (c) is an enlarged view of the vicinity of the first feeding body 16 and the second feeding body 17 of FIGS. 11 (a) and 11 (b). The thickness of each member in the above formulas (1) and (2) will be described with reference to FIGS. 11 (b) and 11 (c).
- ti, tiF1, and tiF2 are the (total) thicknesses of the interlayer film 20 in each portion shown in FIG. 11 (a).
- the interlayer film 20 has a first intermediate film 11, a first adjustment intermediate film 21, and a second intermediate film 12 in any portion. Therefore, when the thickness of the first interlayer film 11 is t 1 , the thickness of the first adjustment interlayer film 21 is t 2 , and the thickness of the second interlayer film 12 is t 3 , then ti and t iF1 , T iF2 all represent the sum of t 1 to t 3 .
- the thickness thereof is also included.
- t F1 and t F2 represent the thickness of the thickest portion of the first feeding body 16 and the second feeding body 17.
- the thickest portion is, for example, a portion of the feeding bodies 16 and 17 shown in FIG. 11C including the foil-shaped conductors 36, 26', 37, 37'.
- the first crimping step is a step of heating and pressurizing a first glass plate and a second glass plate to crimp.
- the laminated body obtained in the laminated step is put into a vacuum bag, for example, sandwiched between a pair of nip rollers, or the peripheral portion is covered with a rubber channel, and the laminated body is pressurized and heated to bond. It may be a process of performing.
- the first crimping step can be performed by controlling the temperature at usually 50 ° C. to 130 ° C.
- the absolute pressure when the vacuum bag is used is preferably 36 kPa to 1 kPa.
- Second crimping step If necessary, after the first crimping step, there may be a second crimping step in which the laminated body obtained in the laminating step is crimped more firmly.
- the second crimping step can be performed by putting the laminate in an autoclave, for example, controlling the temperature at 110 ° C. to 150 ° C., and holding the absolute pressure at 0.98 MPa to 1.47 MPa for a predetermined time.
- the second crimping step is preferably kept at a higher temperature and pressure than the first crimping step.
- the first embodiment is an example corresponding to the laminated glass 500 for a vehicle of the fifth embodiment.
- first glass plate and the second glass plate light green glass (300 mm ⁇ 300 mm, thickness 2 mm) normally used as vehicle glass is used as the first to third interlayer films and the first and second adjustments.
- Polyvinyl butyral (PVB) film (Sekisui Chemical Co., Ltd., thickness 0.38 mm) is used as the interlayer film, and suspended particle device (SPD) (Hitachi Kasei Co., Ltd.) is used for the first and second functional members. , Thickness 0.34 mm) was used.
- the size of the first to third interlayer films is 300 mm ⁇ 300 mm.
- the first and second adjusting interlayer films have a hollow according to the size of the first and second functional members, and the portion other than the hollow portion has a predetermined width. There is.
- the first and second feeders (0.13 mm at the thinnest part, 0.24 mm at the thickest part) are made of tin-coated copper foil (thickness 0.1 mm) and polyimide (thickness 0.1 mm) via an epoxy adhesive. It is coated (thickness 0.13 mm, width 360 mm).
- the laminated glass for vehicles according to Example 1 was obtained through a laminating step, a first crimping step, and a second crimping step.
- a second interlayer film, a second adjusting interlayer film, a second functional member to which a second feeding body is electrically connected, and a third interlayer film are placed on the second glass plate.
- the first adjusting interlayer film, the first functional member to which the first feeding body is electrically connected, the first interlayer film, and the first glass plate are laminated in this order from the lower layers of FIGS. 9 and 10. did.
- the distance d 1 between the first feeding body and the second feeding body is 45 mm or less and / or from the feeding side to the peripheral edge of the first functional member (second functional member).
- the distance d 2 is 60 mm or less, it was confirmed that no foam residue was generated in the region (a) and the region (b) after the second crimping step.
- the laminated glass for vehicles according to the present invention is also expected to be used in a high temperature environment for a long period of time.
- the compressed and melted air expands, and there is a possibility that larger foam (foam residue) than in the stage after the second crimping process or new foam residue that was not confirmed after the second crimping process may occur.
- a test was conducted in which the laminated glass for a vehicle after the second crimping step was allowed to stand in an oven, controlled at 100 ° C to 130 ° C, and heated for 2 hours to accelerate firing.
- the inside of the peripheral edge of the first functional member (second functional member) is 20 mm or more even after the bake test. , Or it was confirmed that no foam residue was generated between the first feeding body and the second feeding body.
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Abstract
Description
式(1):ti≧0.8×(tF1+tiF1)
式(2):ti≧0.8×(tF2+tiF2)
ti:第1の給電体および第2の給電体の平面方向間における中間膜の厚さ
tF1:第1の給電体の最厚部分の厚さ
tF2:第2の給電体の最厚部分の厚さ
tiF1:第1の給電体と重複する部分における中間膜の厚さ
tiF2:第2の給電体と重複する部分における中間膜の厚さ
以下、本発明の第1実施形態について、図1乃至図3を用いて説明する。図1は、本発明の第1実施形態にかかる車両用合わせガラスの平面図であり、後述する本発明の第2実施形態および第3実施形態を示す平面図でもある。
図4は、本発明の第2実施形態にかかる車両用合わせガラス200の給電辺10sを含む側面図である。なお、本実施形態では、第1実施形態にかかる車両用合わせガラス100と異なる点について説明し、それ以外については第1実施形態の説明を援用する。
図5は、本発明の第3実施形態にかかる車両用合わせガラス300の給電辺10sを含む側面図である。図5では、第1の機能性部材14と第2の機能性部材15の概形を破線で示し、中間膜20と機能性部材14、15、および給電体16、17の配置を明確にしている。
以下、本発明の第4実施形態について、図6乃至図8を用いて説明する。図6は、第4実施形態にかかる車両用合わせガラスを示す平面図であり、後述する第5実施形態にかかる車両用合わせガラスを示す平面図でもある。なお、本実施形態でも、第1実施形態にかかる車両用合わせガラス100と異なる点について説明し、それ以外については第1実施形態の説明を援用する。
図9および図10は、それぞれ、図6に示す、本発明の第5実施形態にかかる車両用合わせガラス500のX1-X2断面図、および給電体辺10sを含む側面図である。図9のように、車両用合わせガラス500の中間膜20は、厚さ方向(Z軸方向)において、第1の機能性部材14と第2の機能性部材15との間に、第3の中間膜13を有する点で、第4実施形態と異なる。そして、第1の機能性部材14は、第1の中間膜11と第3の中間膜13に挟持され、第2の機能性部材15は、第2の中間膜12と第3の中間膜13との間に挟持される。
第1のガラス板10および第2のガラス板18は、平板状でもよく、少なくとも一方が湾曲してもよく、両方とも湾曲してもよい。第1のガラス板10および第2のガラス板18は、それぞれ、湾曲方向が単一である単曲形状(シリンドリカル)でもよく、直交する2方向に湾曲する複曲形状でもよい。
中間膜20は、合わせガラスに一般的に採用されているものを使用でき、例えば、熱可塑性樹脂、熱硬化性樹脂、または光硬化性組成物が挙げられ、これらの樹脂を固化させて形成できる。なお、ここでいう「固化」は、硬化を含む。
以下、第1の機能性部材14と第2の機能性部材15を、まとめて単に「機能性部材」ともいう。機能性部材は、給電体によって電源から電力を供給して電力駆動する層である。電力駆動する機能性部材は、調光層、発光層、電熱層等でもよい。機能性部材は、電力駆動する部分が全体として平面を構成していれば十分である。一方で、例えば、第1のガラス板10と第2のガラス板18の間に配置される、赤外線遮光コーティング膜や紫外線により発光する樹脂フィルム等は、全体として平面を構成しているが、電力駆動しないため、機能性部材には含まない。
第1の給電体16において、箔状導体36と36’が互いに離間する方向は、車両用合わせガラスの厚さ方向でもよい。しかし、この場合、第1の給電体16の厚さが増加して中間膜20への封入後の泡残りが発生しやすくなるおそれがあるため、互いに離間する方向は平面方向の方が好ましい。このことは、第2の給電体17における箔状導体37と37’についても当てはまる。
車両用合わせガラスは、例えば、給電辺10sから中央部に向かって、第1の機能性部材14および第2の機能性部材15の周縁の、少なくとも一部と重複する幅の遮光部50を有してもよい。遮光部50の幅は、第1の機能性部材14または第2の機能性部材15の周縁から内側方向に5mm以上あると、機能性部材の周縁を効果的に隠蔽でき好ましい。
<車両用合わせガラスの製造方法>
第1のガラス板10、中間膜20、および第2のガラス板18がこの順に積層された車両用合わせガラス100の製造方法は、(1)積層工程および(2)第1圧着工程を含み、(1)の工程を経た後に(2)の工程に進む。また、該製造方法は、(2)の第1圧着工程を経た後に、(3)第2圧着工程を含んでもよい。
積層工程は、第1のガラス板10、中間膜20、第1の給電体16が接続された第1の機能性部材14、第2の給電体17が接続された第2の機能性部材15、および第2のガラス板18を有する積層体を準備する工程である。
ti:第1の給電体および第2の給電体の平面方向(X軸方向)間における中間膜の厚さ
tF1:第1の給電体の最厚部分の厚さ
tiF1:第1の給電体と重複する部分における中間膜の厚さ
式(2):ti≧0.8×(tF2+tiF2)
tF2:第2の給電体の最厚部分の厚さ
tiF2:第2の給電体と重複する部分における中間膜の厚さ
式(3):1.2×(tF1+tiF1)≧ti
式(4):1.2×(tF2+tiF2)≧ti
第1圧着工程は、第1のガラス板と第2のガラス板とを加熱および加圧して圧着する工程である。第1圧着工程は、積層工程で得られた積層体を、例えば真空バッグに入れ、または一対のニップローラーで挟持し、あるいはラバーチャンネルで周縁部を覆い、積層体を加圧および加熱して接着する工程でもよい。第1圧着工程は、温度を通常50℃乃至130℃で制御して行える。真空バッグを用いたときの絶対圧力は36kPa乃至1kPaが好ましい。
必要に応じて、第1圧着工程後に、積層工程で得られた積層体を更に強固に圧着させる第2圧着工程を有してもよい。第2圧着工程は、積層体を例えばオートクレーブに入れ、温度を110℃乃至150℃で制御し、絶対圧力を0.98MPa乃至1.47MPaで所定時間保持することにより行える。第2圧着工程は第1圧着工程より高温高圧に保つことが好ましい。
<実施例1>
実施例1は、第5実施形態の車両用合わせガラス500に対応した例である。第1のガラス板および第2のガラス板として、通常車両用ガラスとして用いる薄緑色のガラス(300mm×300mm、厚さ2mm)を、第1乃至第3の中間膜ならびに第1および第2の調整中間膜としてポリビニルブチラール(PVB)製フィルム(積水化学工業株式会社製、厚さ0.38mm)を、第1および第2の機能性部材には懸濁粒子デバイス(SPD)(日立化成株式会社製、厚さ0.34mm)を用いた。第1乃至第3の中間膜のサイズは300mm×300mmである。第1および第2の調整中間膜は、表1のように、第1および第2の機能性部材のサイズに応じたくり貫きを有し、くり貫き部以外の部分は所定の幅を有している。
第2圧着工程後の車両用合わせガラスについて、下記領域(a)および領域(b)の範囲において、第1のガラス板の平面視において、泡残りの有無を確認した。直径1mm以上の気泡が1個以上確認された場合に、泡残りがあるとした。領域(a):第1の機能性部材(第2の機能性部材)の周縁より20mm以上内側、領域(b):第1の給電体および第2の給電体の間。
本発明にかかる車両用合わせガラスは、長期間、高温環境下で使用されることも想定される。高温環境下では圧縮・溶解していた空気が膨張し、第2圧着工程後の段階よりも大きな発泡(泡残り)あるいは第2圧着工程後には確認されなかった泡残りが新たに生じる可能性がある。そこで、実施例1において、第2圧着工程後の車両用合わせガラスをオーブンに静置し、100℃乃至130℃に制御して2時間加熱することで、発砲を加速させる試験を行った。
10 第1のガラス板
10a 第1主面
10b 第2主面
10s 給電辺
G 重心
11 第1の中間膜
12 第2の中間膜
13 第3の中間膜
14 第1の機能性部材
15 第2の機能性部材
16 第1の給電体
17 第2の給電体
d1 給電体間距離
d2 給電辺から機能性部材の周縁までの距離
18 第2のガラス板
18c 第3主面
18d 第4主面
20 中間膜
21 第1の調整中間膜
22 第2の調整中間膜
23 第3の調整中間膜
25 補助中間膜
36、36’、37、37’ 箔状導体
50 遮光部
なお、2020年9月2日に出願された日本国特願2020-147753号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (15)
- 第1のガラス板と、中間膜と、第2のガラス板と、がこの順に積層された車両用合わせガラスであって、
前記中間膜は、第1の中間膜と第2の中間膜を有し、
前記第1の中間膜と前記第2の中間膜の間に、第1の機能性部材、第2の機能性部材、前記第1の機能性部材に電気的に接続される第1の給電体、および前記第2の機能性部材に電気的に接続される第2の給電体、を有し、
前記第1のガラス板の平面視において、
第1の機能性部材と第2の機能性部材は、前記第1のガラス板の周縁より内側に配置され、
前記第1の給電体および前記第2の給電体は、前記第1のガラス板の一辺である給電辺のみと交差し、かつ、前記第1のガラス板の面内において重複しないことを特徴とする、車両用合わせガラス。 - 前記中間膜は、第1の調整中間膜を含み、
前記第1の調整中間膜は、前記第1の機能性部材の周縁に配置される、請求項1に記載の車両用合わせガラス。 - 前記第1の調整中間膜は、前記第2の機能性部材の周縁に配置される、請求項2に記載の車両用合わせガラス。
- 前記第1のガラス板は、第1主面を有し、
前記第1のガラス板の前記給電辺を含む断面視において、
前記第1主面から前記第1の給電体までの距離と、前記第1主面から前記第2の給電体までの距離が略同一であり、
前記中間膜は、補助中間膜を含み、
前記補助中間膜は、前記第1の給電体と前記第2の給電体の間に配置される、請求項1から3のいずれか一項に記載の車両用合わせガラス。 - 前記中間膜は、第2の調整中間膜を含み、
前記第2の調整中間膜は、前記第2の機能性部材の周縁に配置される、請求項1から4のいずれか一項に記載の車両用合わせガラス。 - 前記第1のガラス板の平面視において、
前記第1の機能性部材と前記第2の機能性部材は、少なくとも一部が重複している、請求項1から5のいずれか一項に記載の車両用合わせガラス。 - 前記中間膜は、第3の中間膜を含み、
前記第3の中間膜は、前記第1の中間膜と前記第2の中間膜の間に配置され、
前記第1の機能性部材は、前記第3の中間膜の一方の主面側に配置され、
前記第2の機能性部材は、前記第3の中間膜の他方の主面側に配置される、請求項1から6のいずれか一項に記載の車両用合わせガラス。 - 前記第1のガラス板は、第1主面を有し、
前記第1のガラス板の前記給電辺を含む断面視において、
前記第1主面から前記第1の給電体までの距離と、前記第1主面から前記第2の給電体までの距離が異なる、請求項1から7のいずれか一項に記載の車両用合わせガラス。 - 前記第1のガラス板の平面視において、
前記第1の給電体と前記第2の給電体の給電体間距離d1は、100mm以下である、請求項1から8のいずれか一項に記載の車両用合わせガラス。 - 前記給電辺と、前記第1の機能性部材の周縁の距離d2は、65mm以下である、請求項1から9のいずれか一項に記載の車両用合わせガラス。
- 前記第1のガラス板の前記給電辺から、前記第1の機能性部材に向かって、遮光部を有し、
前記遮光部は、前記第1の機能性部材の周縁の少なくとも一部と重複する、請求項1から10のいずれか一項に記載の車両用合わせガラス - 前記第1のガラス板は、略台形形状であり、
前記給電辺は、前記第1のガラス板のうち最も長い辺または2番目に長い辺である、請求項1から11のいずれか一項に記載の車両用合わせガラス。 - 前記第1のガラス板および前記第2のガラス板は、切り欠きを有さない、請求項1から12のいずれか一項に記載の車両用合わせガラス。
- 第1のガラス板と、中間膜と、第2のガラス板と、がこの順に積層された車両用合わせガラスの製造方法であって、
前記第1のガラス板、前記中間膜、第1の給電体が接続された第1の機能性部材、第2の給電体が接続された第2の機能性部材、および前記第2のガラス板を有する積層体を準備する積層工程と、
前記積層体を加熱および加圧して圧着する第1圧着工程と、を有し、
前記中間膜は、第1の中間膜と第2の中間膜を有し、
前記積層工程は、前記第1の給電体が電気的に接続された前記第1の機能性部材と、前記第2の給電体が電気的に接続された前記第2の機能性部材とが、前記第1の中間膜と前記第2の中間膜の間に位置するとともに、前記第1のガラス板の平面視において、前記第1の給電体と前記第2の給電体が、前記第1のガラス板の一辺である給電辺のみと交差し、かつ、前記第1の給電体と前記第2の給電体とが、前記第1のガラス板の面内において重複しないように配置する工程を含み、
前記積層工程は、前記第1のガラス板の前記給電辺を含む断面視において、次の式(1)および式(2)を満たすことを特徴とする車両用合わせガラスの製造方法。
式(1):ti≧0.8×(tF1+tiF1)
式(2):ti≧0.8×(tF2+tiF2)
ti:前記第1の給電体および前記第2の給電体の平面方向間における前記中間膜の厚さ
tF1:前記第1の給電体の最厚部分の厚さ
tF2:前記第2の給電体の最厚部分の厚さ
tiF1:前記第1の給電体と重複する部分における前記中間膜の厚さ
tiF2:前記第2の給電体と重複する部分における前記中間膜の厚さ - 前記第1圧着工程後に、第2圧着工程を含む、請求項14に記載の車両用合わせガラスの製造方法。
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| WO2020054286A1 (ja) * | 2018-09-10 | 2020-03-19 | Agc株式会社 | ガラス、合わせガラス |
| WO2020171063A1 (ja) * | 2019-02-20 | 2020-08-27 | Agc株式会社 | 合わせガラス |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022126259A1 (de) * | 2022-10-11 | 2024-04-11 | Bayerische Motoren Werke Aktiengesellschaft | Scheibenverbund, hiermit ausgestattetes Fahrzeug sowie eine mit einem solchen Scheibenverbund ausgestattete Immobilie |
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| Publication number | Publication date |
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| CN116018281B (zh) | 2025-03-28 |
| JPWO2022050188A1 (ja) | 2022-03-10 |
| CN116018281A (zh) | 2023-04-25 |
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