The disclosure relates to glass articles, and more particularly to laminate glass articles with residual compressive stress and viscosity characteristics suitable for various curved glass applications, including for automotive and architectural glazing. The disclosure also relates to methods of making, and glass compositions, for these articles.
Glass is commonly used in windows for various applications due to its clarity and durability. Automotive and architectural windows and glazing may include a single glass article in a sheet or monolithic form, or a laminate that includes two or more glass articles in sheet form. Many conventional automobile windshields, for example, comprise laminates of two sheets of soda-lime glass (SLG) with a polymer layer (e.g., polyvinyl butyral) between them. More generally, these laminate and monolithic glazing forms can be employed in various windshield, sidelite, rear window, passenger window, sunroofs and automotive window structures. Architectural applications can utilize similar glazing structures in buildings, panels, walls, and the like.
Many of these automotive and architectural applications employ monolithic and laminate glass articles in curved glazing structures that can be manufactured with sagging processes. In a sagging process, the glass layer(s) of the monolith or laminate structure are heated to a temperature at which the glass layer(s) sag to the desired shape for the particular application. As such, the composition of the glass layer(s) can significantly influence the viscosity and, therefore, the sagging-related processing of these glass layer(s) into the desired monolithic or laminate glass article form for the intended automotive or architectural application.
Automotive manufacturers continue to focus on weight saving to improve fuel economy and reduce emissions, which includes reducing the weight of window structures. Building designers and developers also wish to reduce the weight of window structures to reduce raw material costs and mechanical load requirements. Some attempts to achieve such weight saving have involved the use of thinner glass articles in monolith window structures. Similarly, thinner inner glass layers have been envisioned for use in laminate window structures to provide weight savings. Unfortunately, these efforts have often failed as compositional changes and/or strengthening processes to increase the strength levels of these thinned layers to account for the thickness reductions have generally come at the expense of decreased viscosity control for sagging-related processing. For example, conventional strengthened aluminosilicate glasses employed in an attempt to obtain a thickness reduction have not been amenable to a co-sagging process with a conventional SLG layer (e.g., for an automobile windshield) given the significantly higher viscosity levels of these aluminosilicate glasses relative to the SLG glass.
Accordingly, there is a need for glass articles, and more particularly for laminate glass articles with residual compressive stress and viscosity characteristics suitable for various curved glass applications, including for automotive and architectural glazing. Likewise, there is a need for methods of making these articles, along with glass compositions for them.
According to some aspects of the present disclosure, a laminate glass article is provided that includes: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer. The difference in the first and second CTE is about 10×10−7/° C. to about 70×10−7/° C. Further, each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550° C. to about 700° C.
According to other aspects of the present disclosure, a laminate glass-ceramic article is provided that includes: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer. The difference in the first and second CTE is about 10×10−7/° C. to about 70×10−7/° C. Further, each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550° C. to about 700° C. In addition, a total thickness of the plurality of clad glass layers and the core glass layer ranges from about 0.15 mm to about 3 mm.
According to further aspects of the disclosure, a laminate glass-ceramic article is provided that includes: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer. The difference in the first and second CTE is about 10×10−7/° C. to about 70×10−7/° C. Further, each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550° C. to about 700° C. In addition, a ratio of the thickness of the core glass layer to the thickness of the plurality of clad glass layers is about 1 to about 20.
Additional features and advantages will be set forth in the detailed description which follows, and will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments as described herein, including the detailed description which follows, the claims, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description are merely exemplary, and are intended to provide an overview or framework to understanding the nature and character of the disclosure and the appended claims.
The accompanying drawings are included to provide a further understanding of principles of the disclosure, and are incorporated in, and constitute a part of, this specification. The drawings illustrate one or more embodiment(s) and, together with the description, serve to explain, by way of example, principles and operation of the disclosure. It is to be understood that various features of the disclosure disclosed in this specification and in the drawings can be used in any and all combinations. By way of non-limiting examples, the various features of the disclosure may be combined with one another according to the following embodiments.
The following is a description of the figures in the accompanying drawings. The figures are not necessarily to scale, and certain features and certain views of the figures may be shown exaggerated in scale or in schematic in the interest of clarity and conciseness.
In the drawings:
Additional features and advantages will be set forth in the detailed description which follows and will be apparent to those skilled in the art from the description, or recognized by practicing the embodiments as described in the following description, together with the claims and appended drawings.
As used herein, the term “and/or,” when used in a list of two or more items, means that any one of the listed items can be employed by itself, or any combination of two or more of the listed items can be employed. For example, if a composition is described as containing components A, B, and/or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.
In this document, relational terms, such as first and second, top and bottom, and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Modifications of the disclosure will occur to those skilled in the art and to those who make or use the disclosure. Therefore, it is understood that the embodiments shown in the drawings and described above are merely for illustrative purposes and not intended to limit the scope of the disclosure, which is defined by the following claims, as interpreted according to the principles of patent law, including the doctrine of equivalents.
For purposes of this disclosure, the term “coupled” (in all of its forms: couple, coupling, coupled, etc.) generally means the joining of two components directly or indirectly to one another. Such joining may be stationary in nature or movable in nature. Such joining may be achieved with the two components and any additional intermediate members being integrally formed as a single unitary body with one another or with the two components. Such joining may be permanent in nature, or may be removable or releasable in nature, unless otherwise stated.
As used herein, the term “about” means that amounts, sizes, formulations, parameters, and other quantities and characteristics are not and need not be exact, but may be approximate and/or larger or smaller, as desired, reflecting tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art. When the term “about” is used in describing a value or an end-point of a range, the disclosure should be understood to include the specific value or end-point referred to. Whether or not a numerical value or end-point of a range in the specification recites “about,” the numerical value or end-point of a range is intended to include two embodiments: one modified by “about,” and one not modified by “about.” It will be further understood that the end-points of each of the ranges are significant both in relation to the other end-point, and independently of the other end-point.
The terms “substantial,” “substantially,” and variations thereof as used herein are intended to note that a described feature is equal or approximately equal to a value or description. For example, a “substantially planar” surface is intended to denote a surface that is planar or approximately planar. Moreover, “substantially” is intended to denote that two values are equal or approximately equal. In some embodiments, “substantially” may denote values within about 10% of each other, such as within about 5% of each other, or within about 2% of each other.
Directional terms as used herein—for example up, down, right, left, front, back, top, bottom—are made only with reference to the figures as drawn and are not intended to imply absolute orientation.
As used herein the terms “the,” “a,” or “an,” mean “at least one,” and should not be limited to “only one” unless explicitly indicated to the contrary. Thus, for example, reference to “a component” includes embodiments having two or more such components unless the context clearly indicates otherwise.
As also used herein, the terms “glass article” and “glass articles” are used in their broadest sense to include any object made wholly or partly of glass and/or glass-ceramics. Unless otherwise specified, all compositions are expressed in terms of weight percent (wt. %). Coefficients of thermal expansion (CTE) are expressed in terms of 10−7/° C. and represent a value measured over a temperature range from about 20° C. to about 300° C., unless otherwise specified.
The terms “relatively low CTE” and “low CTE” are used interchangeably in the disclosure with regard to clad glass layers with a starting glass composition (e.g., prior to drawing, laminating, and ion exchange) having a CTE that is lower than the CTE of the starting composition of the core glass by at least about 5×10−7/° C. Conversely, the terms “relatively high CTE” and “high CTE” are used interchangeably in the disclosure with regard to core glass layers with a starting glass composition having a CTE that is higher than the CTE of the starting composition of the clad glass by at least about 5×10−7/° C. The CTE of clad glass layers may also be lower than the CTE of the core glass layer by an amount in the range from about 5×10−7/° C. to about 70×10−7/° C., from about 10×10−7/° C. to about 70×10−7/° C., from about 10×10−7/° C. to about 60×10−7/° C., or from about 10×10−7/° C. to about 50×10−7/° C. For example, the core glass may have a CTE of about 100×10−7/° C. and the clad glass layers may have a CTE of about 50×10−7/° C., such that there is a difference of about 50×10−7/° C. between the CTE of the core glass and the clad glass layers.
The terms “mechanically strengthened laminate glass article” and “mechanical strengthening” are used in relation to the laminate glass articles of the disclosure to mean a laminate glass article that has been formed by laminating a high CTE core glass to low CTE clad glass layers, thereby creating compressive stresses in the clad glass layers when the laminate is cooled following lamination. These compressive stresses can offset externally applied mechanical stresses, which have the net effect of strengthening the laminate.
The terms “chemically strengthened”, “chemical strengthening” and “ion exchange strengthening”, as used in the present description, are intended to mean glass (e.g., a core glass layer, a clad glass layer, etc.) that has been strengthened using an ion exchange process, as understood by those with ordinary skill in the field of the disclosure, to create ion-exchanged compressive stresses in the surface region of the glass at one or more of its outer primary surfaces and edges.
As noted earlier, the laminate and monolithic glass articles of the disclosure can be manufactured with sagging processes. As used herein, in a “sagging process”, the glass layer(s) of the monolith or laminate structure are heated to a temperature at which the glass layer(s) sag to the desired shape for the particular application. Further, the temperature at which the glass layer(s) are heated to during a sagging process is referred to as the “sag temperature”. As used herein, the “sag temperature” means the temperature at which the log viscosity of the glass article is 109.9 Poise. The sag temperature is determined by fitting the Vogel-Fulcher-Tamman (VFT) equation: Log h=A+B/(T−C), where T is the temperature, A, B and C are fitting constants and h is the dynamic viscosity, to annealing point data measured using the bending beam viscosity (BBV) measurement, to softening point data measured by fiber elongation or parallel plate viscosity (PPV). As a reference point for the laminate and monolithic glass articles of the disclosure, conventional soda lime glass (SLG) can exhibit a sag temperature between about 550° C. and 720° C. Further, when monolithic, laminate or combinations of monolithic and laminate glass articles of the disclosure are sagged together when stacked on top of one another, the process is referred to as “pair sagging” or “co-sagging”.
In general, the disclosure is directed to glass articles, including laminate glass articles with residual compressive stress (i.e., through CTE mismatch between the core and clad glass layers) and viscosity characteristics suitable for various curved glass applications, including for automotive and architectural glazing. The disclosure also includes methods of making these articles, along with glass compositions for them. The glass compositions of the disclosure are suitable for co-sagging processes with an SLG ply, e.g., to form automotive and architectural glazing. Viscosity within the co-sagging temperature range can be controlled by selecting particular compositions of the core glass and/or clad glass layers. Various viscosity adjustments can be made within the compositional ranges of the disclosure, particularly given that the glass compositions employed for the laminate articles of the disclosure are not required to be ion-exchangeable glass compositions (e.g., given the compressive residual stresses afforded by the CTE mismatch between the core and clad glass layers). It is also possible to control the viscosity of the laminate glass articles by controlling the thickness ratios of the core and clad glass layers. Still further, embodiments of the core and clad glass compositions are ion-exchangeable, thus facilitating the development of compressive stress regions obtained through the summation of mechanical and ion exchange processes.
Referring now to
Referring again to the laminate glass article 100 depicted in
Referring again to the laminate glass article 100 depicted in
Still referring to the laminate glass article 100 depicted in
Again referring to the laminate glass article 100 depicted in
According to some aspects of the disclosure, the laminate glass article 100 depicted in
Referring again to the laminate glass article 100 depicted in
Still referring to the laminate glass article 100 depicted in
In one or more embodiments, the glass composition of the core glass layer 12 and/or the plurality of clad glass layers 10a, 10b of the laminate glass article 100 depicted in
According to some embodiments, each of the core glass layer 12 and the plurality of clad glass layers 10 comprise a glass composition with properties (e.g., liquidus viscosity, liquidus temperature, and CTE) suitable for formation of the laminate glass article 100 depicted in
In some implementations of the laminate glass article 100 depicted in
In some implementations of the laminate glass article 100 depicted in
Although exemplary embodiments of the glass composition for the core glass layer 12 are described herein, the core glass composition can comprise suitable components in suitable amounts such that the core glass composition is compatible with the glass composition for the plurality of clad glass layers 10a, 10b for formation of the laminate glass article 100 as described herein and depicted in
In the embodiments described herein, the glass composition of the plurality of clad glass layers 10a, 10b and core glass layer 12 comprises SiO2, which can serve as a glass network former. For example, the composition of these layers can comprise from about 55% to about 80% SiO2 (by weight). If the concentration of SiO2 is too low, the glass composition can be incompatible with zircon, which is a common component found in fusion-draw equipment (e.g., in refractory). If the concentration of SiO2 is too high, the glass composition can have an undesirably high durability and can have a sufficiently high melting point to adversely impact the formability of the glass.
In the embodiments described herein, the glass composition of the core glass layer 12 and the plurality of clad glass layers 10a, 10b comprises Al2O3, which can serve as a glass network former. For example, the glass composition of these layers can comprise from about 0.25% to about 17.5% Al2O3 (by weight). The presence of Al2O3 can reduce the liquidus temperature of the glass composition, thereby increasing the liquidus viscosity of the glass composition. If the concentration of Al2O3 is too low, the glass composition can be undesirably soft (e.g., the strain point can be undesirably low) and can have an undesirably high CTE. If the concentration of Al2O3 is too high, the glass composition can have an undesirable hardness and be incompatible with any zircon in a refractory or other component in contact with the glass in the fusion-draw equipment.
In some embodiments, the glass composition of the core glass layer 12 and the plurality of clad glass layers 10a, 10b comprises B2O3, which can serve as a glass network former. For example, the glass composition can comprise from about 0% to about 20% B2O3 (by weight). The presence of B2O3 can reduce the durability of the glass composition. Additionally, or alternatively, the presence of B2O3 can reduce the viscosity and the liquidus temperature of the glass composition. For example, increasing the concentration of B2O3 by 1% (by weight) can decrease the temperature required to obtain an equivalent viscosity by about 10° C. to about 20° C., depending on the glass composition. However, increasing the concentration of B2O3 by 1% can lower the liquidus temperature by about 15° C. to about 25° C., depending on the glass composition. Thus, B2O3 can reduce the liquidus temperature of the glass composition more rapidly than it decreases the liquidus viscosity. If the concentration of B2O3 is too low, the glass composition can have an undesirable hardness. If the concentration of B2O3 is too high, the glass composition can be undesirably soft.
In some embodiments, the glass composition of the plurality of clad glass layers 10a, 10b and the core glass layer 12 comprises an alkali metal oxide selected from the group consisting of Li2O, Na2O, K2O, Rb2O, Cs2O, and combinations thereof. For example, the glass composition can comprise from about 2% to about 20% Na2O (by weight). Additionally, or alternatively, the glass composition can comprise from about 0% to about 7% K2O (by weight). The alkali metal oxide can serve as a modifier. For example, the presence of Na2O can reduce the melting temperature of the glass composition, which can enhance the formability of the glass composition. In embodiments comprising Na2O, if the concentration of Na2O is too low, the glass composition can have an undesirable hardness. If the concentration of Na2O is too high, the glass composition can have an undesirably high CTE.
In some embodiments, the glass composition of the plurality of clad glass layers 10a, 10b and the core glass layer 12 comprises an alkaline earth oxide selected from the group consisting of CaO, MgO, SrO, and combinations thereof. For example, the glass composition comprises from about 0% to about 5% CaO (by weight). Additionally, or alternatively, the glass composition comprises from about 0% to about 5% MgO. Additionally, or alternatively, the glass composition comprises from about 0% to about 10% SrO (by weight).
In some embodiments, the glass composition of the plurality of clad glass layers 10a, 10b and the core glass layer 12 comprises a fining agent selected from the group consisting of SnO2, Sb2O3, Ce2O3, Cl (e.g., derived from KCl or NaCl), and combinations thereof. For example, the glass composition comprises from about 0% to about 1% SnO2 (by weight).
In some embodiments, the glass composition of the plurality of clad glass layers 10a, 10b and the core glass layer 12 comprises P2O5. For example, the glass composition comprises from about 0% to about 5% P2O5 (by weight). In other embodiments, the glass composition of the plurality of clad glass layers 10a, 10b and the core glass layer 12 comprises trace amounts of ZrO2. For example, the clad glass composition comprises from about 0% to about 0.025% ZrO2 (by weight).
In some embodiments, the glass composition of the plurality of clad glass layers 10a, 10b and the core glass layer 12 is substantially free of any or all of Pb, As, Cd, and Ba (i.e., constituents comprising the listed elements). For example, the glass composition can be substantially free of Pb. Additionally, or alternatively, the glass composition is substantially free of As. Additionally, or alternatively, the glass composition is substantially free of Cd. Additionally, or alternatively, the glass composition is substantially free of Ba.
According to another embodiment of the disclosure, the laminate glass article 100a depicted in
Referring again to the laminate glass article 100a depicted in
Referring again to the laminate glass article 100a depicted in
Referring again to the laminate glass article 100a depicted in
In some embodiments, as depicted in exemplary form in
In some implementations, the laminate glass article 100a (see
In some embodiments, a display (e.g., an LED or LCD display) comprises a laminate glass article 100 or 100a as described herein (see
In some embodiments, an automotive glazing comprises a laminate glass article 100, 100a as described herein (see
Various embodiments of the laminate glass articles 100, 100a (see
The laminate glass article 100 depicted in
Referring again to the laminate overflow distributor apparatus 200 depicted in
Still referring to the laminate overflow distributor apparatus 200 depicted in
In some embodiments, the laminate glass article 100 is part of a glass ribbon traveling away from draw line 230 of lower overflow distributor 220, as shown in
Although the laminate glass articles 100 and 100a depicted in
The following examples represent certain non-limiting examples of compositions suitable for the clad glass layers 10a, 10b and the core glass layer 12 of the laminate articles 100, 100a, and the methods of making them, as described in the disclosure (see
Referring now to
Referring again to
As shown in
As shown in
As shown in
As shown in
According to an aspect (1) of the present disclosure, a laminate glass article is provided. The laminate glass articles comprises: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer, wherein the difference in the first and second CTE is about 10×10−7/° C. to about 70×10−7/° C., and further wherein each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550° C. to about 700° C.
According to an aspect (2) of the present disclosure, the laminate glass article of aspect (1) is provided, wherein each of the plurality of clad glass layers comprises:
According to an aspect (3) of the present disclosure, the laminate glass article of aspect (1) is provided, wherein the core glass layer comprises:
According to an aspect (4) of the present disclosure, the laminate glass article of aspect (2) is provided, wherein each of the plurality of clad glass layers comprises a second CTE from about 33×10−7/° C. to about 65×10−7/° C.
According to an aspect (5) of the present disclosure, the laminate glass article of aspect (3) is provided, wherein the core glass layer comprises a first CTE from about 75×10−7/° C. to about 103×10−7/° C.
According to an aspect (6) of the present disclosure, the laminate glass article of aspect (1) is provided, wherein the core glass layer comprises:
According to an aspect (7) of the present disclosure, the laminate glass article of aspect (1) is provided, wherein the core glass layer comprises:
According to an aspect (8) of the present disclosure, the laminate glass article of any of aspects (1)-(7) is provided, wherein each of the plurality of clad glass layers further comprises a plurality of ion-exchangeable ions and an ion-exchanged compressive stress region, and further wherein the ion-exchanged compressive stress region is defined from the first primary surface to a first selected depth in each of the plurality of clad glass layers.
According to an aspect (9) of the present disclosure, the laminate glass article of any of aspects (1)-(8) is provided, wherein the laminate glass article comprises an edge ion-exchanged compressive stress region, the edge ion-exchanged compressive stress region defined from an edge of the laminate glass article to a second selected depth in the core and clad glass layers.
According to an aspect (10) of the present disclosure, a laminate glass article is provided. The laminate glass article comprises: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer, wherein the difference in the first and second CTE is about 10×10−7/° C. to about 70×10−7/° C., wherein each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550° C. to about 700° C., and further wherein a total thickness of the plurality of clad glass layers and the core glass layer ranges from about 0.15 mm to about 3 mm.
According to an aspect (11) of the present disclosure, the laminate glass article of aspect (10) is provided, wherein each of the plurality of clad glass layers comprises:
According to an aspect (12) of the present disclosure, the laminate glass article of aspect (10) is provided, wherein each of the plurality of clad glass layers comprises:
According to an aspect (13) of the present disclosure, the laminate glass article of aspect (11) is provided, wherein each of the plurality of clad glass layers comprises a second CTE from about 33×10−7/° C. to about 65×10−7/° C.
According to an aspect (14) of the present disclosure, the laminate glass article of aspect (12) is provided, wherein each of the plurality of clad glass layers comprises a first CTE from about 75×10−7/° C. to about 103×10−7/° C.
According to an aspect (15) of the present disclosure, the laminate glass article of aspect (10) is provided, wherein a total thickness of the plurality of clad glass layers and the core glass layer ranges from about 0.2 mm to about 2 mm.
According to an aspect (16) of the present disclosure, the laminate glass article of any of the aspects of (10)-(15) is provided, wherein each of the plurality of clad glass layers further comprises a plurality of ion-exchangeable ions and an ion-exchanged compressive stress region, and further wherein the ion-exchanged compressive stress region is defined from the first primary surface to a first selected depth in each of the plurality of clad glass layers.
According to an aspect (17) of the present disclosure, the laminate glass article of any of the aspects of (10)-(16) is provided, wherein the laminate glass article comprises an edge ion-exchanged compressive stress region, the edge ion-exchanged compressive stress region defined from an edge of the laminate glass article to a second selected depth in the core and clad glass layers.
According to an aspect (18) of the present disclosure, a laminate glass article is provided. The laminate glass article comprises: a core glass layer comprising a first coefficient of thermal expansion (CTE); and a plurality of clad glass layers, each comprising a first primary surface, a second primary surface in contact with the core glass layer and a second CTE that is lower than the first CTE of the core glass layer, wherein the difference in the first and second CTE is about 10×10−7/° C. to about 70×10−7/° C., wherein each of the core glass layer and the clad glass layers comprises a viscosity from 109.0 to 1014.0 Poise from about 550° C. to about 700° C., and further wherein a ratio of the thickness of the core glass layer to the thickness of the plurality of clad glass layers is about 1 to about 20.
According to an aspect (19) of the present disclosure, the laminate glass article of aspect (18) is provided, wherein each of the plurality of clad glass layers comprises:
According to an aspect (20) of the present disclosure, the laminate glass article of aspect (18) is provided, wherein each of the plurality of clad glass layers comprises:
According to an aspect (21) of the present disclosure, the laminate glass article of aspect (19) is provided, wherein each of the plurality of clad glass layers comprises a second CTE from about 33×10−7/° C. to about 65×10−7/° C.
According to an aspect (22) of the present disclosure, the laminate glass article of aspect (20) is provided, wherein the core glass layer comprises a first CTE from about 75×10−7/° C. to about 103×10−7/° C.
According to an aspect (23) of the present disclosure, the laminate glass article of aspect (18) is provided, wherein a ratio of the thickness of the core glass layer to the thickness of the plurality of clad glass layers is about 1 to about 10.
According to an aspect (24) of the present disclosure, the laminate glass article of any of aspects of (18)-(23) is provided, wherein each of the plurality of clad glass layers further comprises a plurality of ion-exchangeable ions and an ion-exchanged compressive stress region, and further wherein the ion-exchanged compressive stress region is defined from the first primary surface to a first selected depth in each of the plurality of clad glass layers.
According to an aspect (25) of the present disclosure, the laminate glass article of any of aspects (18)-(24) is provided, wherein the laminate glass article comprises an edge ion-exchanged compressive stress region, the edge ion-exchanged compressive stress region defined from an edge of the laminate glass article to a second selected depth in the core and clad glass layers.
While exemplary embodiments and examples have been set forth for the purpose of illustration, the foregoing description is not intended in any way to limit the scope of disclosure and appended claims. Accordingly, variations and modifications may be made to the above-described embodiments and examples without departing substantially from the spirit and various principles of the disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims.
This application is a national stage application under 35 U.S.C. § 371 of International Application No. PCT/US2019/059390, filed on Nov. 1, 2019, which claims the benefit of priority under 35 U.S.C. § 119 of U.S. Provisional Application Ser. No. 62/757,856 filed on Nov. 9, 2018 the content of each of which is relied upon and incorporated herein by reference in its entirety.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/US2019/059390 | 11/1/2019 | WO |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2020/096897 | 5/14/2020 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
9375900 | Tsuchiya et al. | Jun 2016 | B2 |
20140141217 | Gulati | May 2014 | A1 |
20150375475 | Cook | Dec 2015 | A1 |
20170121209 | Dannoux et al. | May 2017 | A1 |
20170361574 | Kiczenski | Dec 2017 | A1 |
20180237326 | Fredholm | Aug 2018 | A1 |
20180326704 | Harris et al. | Nov 2018 | A1 |
Number | Date | Country |
---|---|---|
105392627 | Mar 2016 | CN |
106660327 | May 2017 | CN |
107207310 | Sep 2017 | CN |
108349218 | Jul 2018 | CN |
3116834 | Jan 2017 | EP |
2015138660 | Sep 2015 | WO |
2018102172 | Jun 2018 | WO |
2018102173 | Jun 2018 | WO |
2018237266 | Dec 2018 | WO |
2019161261 | Aug 2019 | WO |
2019200203 | Oct 2019 | WO |
2020046730 | Mar 2020 | WO |
Entry |
---|
Journa l of Research of the National Bureau of Sta ndards Vo!' 59, No. 3, Sep. 1957 Research Paper 2791 Determination and Use of the Sag Point as a Reference Point in the Heating of Glasses Sam Spinner, Given W. Cleek, and Edgar H. Hamilton (Year: 1957). |
International Search Report and Written Opinion of the International Searching Authority; PCT/US2019/059390; dated Feb. 5, 2020; 8 pages; European Patent Office. |
Chinese Patent Application No. 201980085905.4, Office Action, dated Oct. 26, 2022, 32 pages (18 pages of English Translation and 14 pages of Original Copy); Chinese Patent Office. |
Number | Date | Country | |
---|---|---|---|
20210387442 A1 | Dec 2021 | US |
Number | Date | Country | |
---|---|---|---|
62757856 | Nov 2018 | US |