Classifications

• • 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
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
  • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
• • 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
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10293—Edge features, e.g. inserts or holes
• • 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
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
  • B32B17/1044—Invariable transmission
• • 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
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
  • B32B17/10614—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer comprising particles for purposes other than dyeing
• • 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
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
  • B32B17/10651—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer comprising colorants, e.g. dyes or pigments
  • B32B17/1066—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer comprising colorants, e.g. dyes or pigments imparting a tint in certain regions only, i.e. shade band
• • 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
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
  • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
• • 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
  • B60J1/001—Double glazing for vehicles
• • 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
  • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
  • B60J3/007—Sunglare reduction by coatings, interposed foils in laminar windows, or permanent screens
• • 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
  • B32B2250/00—Layers arrangement
  • B32B2250/44—Number of layers variable across the laminate
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/40—Properties of the layers or laminate having particular optical properties
  • B32B2307/412—Transparent
• • 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
  • B32B2313/00—Elements other than metals
  • B32B2313/04—Carbon
• • 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
  • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
  • B32B2315/08—Glass
• • 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
  • B32B2419/00—Buildings or parts thereof
• • 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
  • B32B2605/00—Vehicles
  • B32B2605/08—Cars

Definitions

• the invention relates to a laminated structure, in particular a windshield, which has a capacity for selective and directional filtration of a part of the light radiation, in particular solar radiation, which passes through it.
• automobile windshields are obtained from a laminated structure, that is to say from a composite structure in which two sheets of glass are intimately connected to each other by a spacer.
• plastic material usually consisting of one or more polyvinyl butyral (PVB) films.
• the object of the present invention is to propose such a solution.
• the present invention relates in the first place to a laminated structure, comprising two sheets of glass, one of which is an outer and one inner, interconnected by an interlayer consisting of at least one layer of a plastic material, said first outer sheet defining an outer surface of said structure and said second glass sheet defining an inner surface of said structure, said structure being characterized in that it further comprises, between the two glass sheets, a slit sheet selectively filtering the light rays incident on at least a portion of the outer surface of said structure, said sheet having a louvre angle of between 15 ° and 75 ° relative to the normal to the outer surface of said structure.
• the slatted sheet comprises and preferably consists of a succession of transmissive blades and absorbent blades of the incident light.
• the blades alternate preferably parallel to the length of the sheet (which corresponds to the horizontal width of the laminated structure).
• the blades are continuous from one edge to the other of the sheet (and preferably of the laminated structure). More preferably, they extend from the outer surface to the inner surface of said leaflet.
• the sheet according to the invention advantageously allows to selectively filter towards the inner surface the light rays incident on at least a portion of the outer surface of said structure.
• the sheet having a louvre angle has comprised between 25 ° and 65 °, more preferably between 30 ° and 60 °, with respect to the normal to the outer surface of said structure.
• the slatted sheet is encapsulated in the plastic material forming the interlayer.
• the slatted sheet constitutes all or part of the interlayer.
• the slatted sheet has a thickness of between 0.1 mm and 0.5 mm.
• the material constituting the absorbent regions incorporates particles of carbon black.
• the pitch between two successive transmissive regions is between 3 and 200 microns, more preferably between 5 and 100 microns, even between 10 and 80 microns and very preferably between 20 and 60 microns.
• transmissive and absorbent regions are blades arranged substantially parallel to each other and oriented at a louvre angle of between 15 ° between 75 °, preferably between 25 ° and 65 °, or between 30 ° and 60 ° , relative to the normal to the outer surface of said structure.
• the thickness of the absorbent blades is between 1 and 70 microns, preferably between 3 and 40 microns, more preferably 5 and 20 microns.
• the thickness of the transmissive blades is between 2 and 130 microns, preferably between 7 and 80 microns, more preferably 10 and 30 microns.
• the thickness of the transmissive blades is greater than the thickness of the absorbent blades, preferably by a factor greater than or equal to 1.5.
• the pitch between two transmissive blades is between 0.5 times and 5 times the thickness of the sheet.
• the invention particularly relates to a windshield constituted by or comprising a laminated structure as described above.
• the slatted sheet can be present only in the upper third of said structure, or only in the upper quarter of said structure.
• the invention relates to a roof window, in particular housing, constituted by or comprising a laminated structure as described above.
• the invention relates to a sunroof and / or panoramic, comprising a laminated structure as described above.
• the louvre angle may be less than 15 °, for example less than 10 ° or even less than 5 °, or even substantially zero.
• Fig. 1 illustrates a schematic view of a slit sheet selectively filtering incident light rays, i.e. incident sunlight as may be used in a structure according to the present invention.
• FIG. 2 shows the use of a laminated structure according to the invention, here in the form of a laminated windshield incorporating a slatted leaflet as described in FIG.
• Figure 3 shows in more detail a sectional view of a structure of the laminated windshield of Figure 2 and in particular illustrates the operation and advantages of such a structure.
• Figure 1 there is shown a typical structure of a slatted sheet ("louver film” according to the Anglo-Saxon term commonly used in the art) whose technology and materials are well known, for example US publications 8,503,122, US 8,213,082, US 5,254,388 EP0563241, WO2007 / 118122, EP 1501696, or US 6,924,912. These structures are for example used as a screen cover for computer screens, so that only the person substantially positioned in front of the screen can see the information on it.
• a slatted sheet (louver film” according to the Anglo-Saxon term commonly used in the art) whose technology and materials are well known, for example US publications 8,503,122, US 8,213,082, US 5,254,388 EP0563241, WO2007 / 118122, EP 1501696, or US 6,924,912.
• These structures are for example used as a screen cover for computer screens, so that only the person substantially positioned in front of the screen can see the information on it.
• regions or absorbent blades 2 of the incident radiation alternate with transmissive regions or blades 3 for this same radiation, that is to say which allows the radiation to pass through. incident light.
• regions or absorbent blades 2 of the incident radiation alternate with transmissive regions or blades 3 for this same radiation, that is to say which allows the radiation to pass through. incident light.
• regions are in the form of blades.
• blade is understood to mean a structure of substantially constant thickness over its entire width and length.
• the blades according to the invention extend over the entire thickness and preferably over the entire length of the slatted sheet in which they are incorporated.
• the transmissive regions or blades 3 may consist of a second plastic material, identical to or different from the previous one, and furthermore comprise carbon black or any absorbent material all or part of the visible light.
• the absorbent blades 2 and the transmissive blades 3 alternate, with a louvre angle ⁇ ("angle" according to the Anglo-Saxon term) between 15 and 80 °, preferably between 25 and 65 °, relative to the normal 14 to the outer surface of the sheet (and therefore the laminated structure incorporating it), for reasons which will be explained later in connection with Figures 2 and 3.
• a louvre angle ⁇ (“angle” according to the Anglo-Saxon term) between 15 and 80 °, preferably between 25 and 65 °, relative to the normal 14 to the outer surface of the sheet (and therefore the laminated structure incorporating it), for reasons which will be explained later in connection with Figures 2 and 3.
• the thickness of the absorbent and transmissive blades is constant and their spacing is regular.
• the inclination combined with the spacing between the two regions also makes it possible to adjust the opening angle Q ("cut-off angle" according to the Anglo-Saxon term) for the incident light, according to a mode of operation and filtration similar to that obtained for ventaux a louver.
• FIG. 2 shows a possible and advantageous use of a laminated structure according to the invention, here in the form of a laminated windshield 4 which incorporates a slatted sheet 1 configured to select in its part high a part of the radiation of the incident light.
• the slatted sheet is present only in the upper third of said structure, or only in the upper quarter of said structure.
• Upper third or upper quarter means the portion of the windscreen whose surface is one third or one quarter of the total area of the windscreen, starting from the upper edge of the windscreen as positioned in the vehicle and in accordance with longitudinal direction.
• the windshield 4 is configured to select a part of the radiation of the incident light, so as firstly to avoid excessive illumination of the conductor, while at the same time maintaining a high level of brightness inside the cabin and in particular for the passengers sitting at the rear of the vehicle.
• the same numbers have been used to designate identical elements or of the same nature.
• the sheetlet 1 inserted in the upper part 5 of the windshield 4 allows selective filtration of the sunlight incident on the windshield.
• the glazing is at an angle g obtus with the ground, for example between 15 and 40 °, or even lower.
• this flat surface is represented in FIGS. 2 and 3, but it is of course possible and even frequent that this surface 5, like the windshield 4 as a whole, is curved.
• FIG. 3 is shown in greater detail an example of the upper part 5 of the laminated structure 4 according to the invention and its action on three light rays. , having a substantially vertical incidence (symbolized by the arrow 6), a substantially horizontal incidence (symbolized by the arrow 8) and an oblique incidence (symbolized by the arrow 7), relative to the ground.
• the windshield described in FIG. 3 has a conventional laminated structure 4 of such a structure: two glass sheets, one inner 10 and the other outer 9, are interconnected by a spacer 11, generally polyvinylbutyral (PVB).
• a spacer 11 generally polyvinylbutyral (PVB).
• PVB polyvinylbutyral
• the windshield presents in this region an angle g which can vary between 25 and 40 ° with the horizontal.
• the slatted sheet 1 is configured in such a way that the substantially vertical and substantially horizontal radii 8 are totally or partially absorbed by an absorbent region 2 of the windshield, whereas the radius 7 arrives on the windshield in accordance with a oblique incidence passes through this one substantially without absorption towards the inner surface 13 of the windshield part and the rear of the passenger compartment.
• This provides a blackout or partially obscuring leaf for the driver of the vehicle, especially when the sun is directly above the windshield, while maintaining a significant light in the passenger compartment of the vehicle.
• the angle Q can be adjusted to values between 20 and 50 ° to obtain a sufficiently wide range allowing a very strong illumination of the passenger compartment, whatever the position of the sun above the vehicle.
• the angle g between the windshield and the horizontal is generally between 15 and 40 °.
• the value of the angle of louvre a is generally adjusted so as to let a maximum of light rays directed towards the rear of the passenger compartment and to stop at least partially, or in whole or almost all, the solar radiation coming directly from the sun when it is close to its maximum height, that is to say directly above the vehicle, and directed towards the driver (that is to say substantially along the vertical radius 6 ).
• the windshield can of course have a curvature in the area where is incorporated the slatted sheet.
• the principles described above remain of course the same as those described above.
• the slatted sheet may form all or part of the interlayer present between the two glass sheets constituting the laminated structure.
• the laminated structure is an automobile windshield. It is of course also possible to use the laminated structure described in the following claims in other applications, such as roof window. Such roof windows are positioned on the roof at an angle to the horizontal to substantially respect the plane of the roof. In such a case also, the use of a slipped sheet has the same advantages as previously described, without being repeated here for brevity.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Joining Of Glass To Other Materials (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=63684003

Family Applications (1)

Country Status (6)

Family Cites Families (14)

• 2018
  • 2018-05-31 FR FR1854717A patent/FR3081769B1/fr active Active
• 2019
  • 2019-05-29 US US17/057,330 patent/US20210187911A1/en active Pending
  • 2019-05-29 MX MX2020012558A patent/MX2020012558A/es unknown
  • 2019-05-29 EP EP19737184.2A patent/EP3802119A1/de active Pending
  • 2019-05-29 CN CN201980036165.5A patent/CN112203848A/zh active Pending
  • 2019-05-29 WO PCT/FR2019/051283 patent/WO2019229395A1/fr unknown

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