# US 2023/0264455 A1 · Hybrid asymmetric automotive laminate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0264455 A1 - Document ID: US20230264455A1 - Status: Published application - Kind: A1 - Application number: 18/003,901 - Filed: 2021-07-02 - Published: 2023-08-24 - Earliest claimed: 2020-07-02 - Assignees: AGP America S.A. - Applicants: AGP America S.A. - Inventors: Mario Arturo MANNHEIM ASTETE; Osmar CURI GRADOS; Vincenzo MANNINO - Web page: https://patentgrep.com/patent/US20230264455A1 ## CPC - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10064: {comprising at least two glass sheets, only one of which being an outer layer} - B32B 3/06: for securing layers together; for attaching the product to another member, e.g. to a support {, or to another product, e.g. groove/tongue, interlocking} - B32B 3/085: {spaced apart pieces on the surface of a layer} - B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12} - B32B 7/08: by mechanical means - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 17/10091: {thermally hardened} - B32B 17/1011: {having predetermined tint or excitation purity} - B32B 17/10119: {having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate} - B32B 17/10137: {Chemical strengthening} - B32B 17/10155: {Edge treatment or chamfering} - B32B 17/10293: {Edge features, e.g. inserts or holes} - B32B 17/10366: {Reinforcements of the laminated safety glass or glazing against impact or intrusion (containing metal wires for reinforcement B32B17/10412)} - B32B 17/10761: {containing vinyl acetal} - B32B 27/18: characterised by the use of special additives - B32B 27/281: {comprising polyimides} - B32B 2250/03: 3 layers - B32B 2305/08: Reinforcements - B32B 2307/732: Dimensional properties - B32B 2605/00: Vehicles - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract The laminated glazing proposed in this invention has an outer glass layer (201) with holes (20) and a thin inner facing glass layer (202) with shorter length dimension whereas the bottom edge (30) does not have holes on it and which does not overlap with the holes (20) in the outer glass layer (201). One or more retention layers (36), comprising reinforcement and adhesive layers, serve to connect the glazing mounting means (32) to both of the glass layers (201, 202) providing a thin laminated glazing with holes (20) that in the event of failure is retained by the mounting means (32). ## Claims ### Claim 1 An automotive glazing having a vision area when installed as a window in a vehicle, the automotive glazing comprising: an outer glass layer which is strengthened having at least one hole configured to receive mounting means for holding the automotive glazing on the vehicle; an inner glass layer which is strengthened having a lower edge which extends below the vision area of the automotive glazing, said lower edge does not overlap the area captured by mounting means; at least one plastic bonding layer disposed between the inner and outer glass layers, wherein the plastic bonding layer has substantially the same shape as the inner glass layer such that the inner glass layer and said at least one plastic bonding layer define a laminated section of the automotive glazing; and a retention system comprising at least one adhesive layer and at least one reinforcement layer which overlaps the lower part of the laminated section and extends below such that it is captured by mounting means, wherein each adhesive layer of said at least one adhesive layer attaches a reinforcement layer of said at least one reinforcement layer to at least one surface of the outer or/and inner glass layer, the thickness of the said at least one reinforcement layer is less than that of the at least plastic bonding layer, said at least one reinforcement layer has a tensile strength at break greater than that of the at least one plastic bonding layer strength, and said at least one reinforcement layer is more thermally stable and less compressible than the at least one plastic bonding layer. ### Claim 2 (depends on 1) The laminated glazing according to claim 1, wherein the outer glass layer thickness is between 2.5 mm and 6 mm, preferably between 2.5 mm and 5 mm. ### Claim 3 The laminated glazing according to any one of the preceding claims, wherein the inner glass layer thickness is between 0.5 mm and 1.6 mm. ### Claim 4 (depends on 4) The laminated glazing according to claim 4, wherein the inner glass layer thickness is between 0.5 mm and 1.1 mm. ### Claim 5 The laminated glazing according to any one of the preceding claims, wherein the reinforcement layer has a tensile strength at break between 30 and 1000 MPa, preferably between 150 and 1000 MPa. ### Claim 6 The laminated glazing according to any one of the preceding claims, wherein the reinforcement layer is comprised of at least one of the following materials: polycarbonate, glass, steel, aluminum, plastic, and fiberglass reinforced plastic. ### Claim 7 (depends on 1, 2, 3, 4, 5) The laminated glazing according to any one of the claims 1 to 5, wherein the reinforcement layer is comprised of at least one of the following materials: polyimide, polyamide, carbon fiber composite, titanium, and polyethylene terephthalate. ### Claim 8 The laminated glazing according to any one of the preceding claims, wherein the adhesive layer has a peel adhesion to glass about equal to that of the plastic bonding layer. ### Claim 9 (depends on 1, 2, 3, 4, 5, 6, 7) The laminated glazing according to any one of the claims 1 to 7, wherein the adhesive layer has a peel adhesion to glass greater than that of the plastic bonding layer. ### Claim 10 The laminated glazing according to any one of the preceding claims, wherein the adhesive layer is substantially comprised of at least one of the following materials: acrylic adhesive film, double-sided tape, polyurethane, resin, acrylic, thermoplastic. ### Claim 11 The laminated glazing according to any one of the preceding claims, wherein the reinforcement layer overlaps with all of the surface of the non-laminated section. ### Claim 12 The laminated glazing according to any one of the preceding claims, wherein the reinforcement layer has holes concentric to the outer glass layer holes. ### Claim 13 The laminated glazing according to any one of the preceding claims, wherein the reinforcement layer extends at least 10 mm above the lower edge of the inner glass layer. ### Claim 14 The laminated glazing according to any one of the preceding claims, wherein the lower edge of the inner glass layer is extended by at least 20 mm below the beltline of the laminated glazing. ### Claim 15 The laminated glazing according to any one of the preceding claims, wherein the outer glass layer is thermally strengthened to a compressive stress of between 60 and 150 MPa, preferably between 100 and 140 MPa. ### Claim 16 The laminated glazing according to any one of the preceding claims, wherein the inner glass layer is chemically strengthened to a compressive stress of between 400 and 900 MPa, preferably between 500 to 800 M pa. ### Claim 17 (depends on 4) The laminated glazing according to claim 4, wherein the inner glass layer is cold bent. ### Claim 18 The laminated glazing according to any one of the preceding claims, wherein the edge of the inner glass layer is offset inboard from the edge of the outer glass layer along a substantial portion of the glass edge. ### Claim 19 (depends on 18) The laminated glazing according to claim 18, wherein the inner glass layer offset is in the range of 0.5 mm to 3.0 mm, preferably in the range of 0.5 mm to 1.5 mm. ### Claim 20 The laminated glazing according to any one of the preceding claims, wherein the inner glass layer has a chamfered or bullnose edge finish along at least the exposed portion of the edge. ### Claim 21 (depends on 1, 2, 3, 4, 5, 6, 7, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20) The laminated glazing according to any one of claims 1 to 7 and 11 to 20, wherein an adhesive layer of said at least one adhesive layer is made from a slit in a plastic bonding layer of said at least one plastic bonding layer.