Methods for making plasma edged glass laminates and plasma edged glass laminates provided
Plasma torch processing addresses the issues of mechanical damage in glass laminates by smoothing and sealing the edges, improving the structural integrity and longevity of glass laminates.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CORNING INC
- Filing Date
- 2025-11-18
- Publication Date
- 2026-06-04
AI Technical Summary
Mechanical processing of glass laminates, particularly abrasive waterjet cutting, damages the glass surface, edges, and the adhesive layer, leading to flaws, cracks, and moisture ingress, which compromises the integrity and longevity of the laminate.
Plasma torch edge processing is used to heat and reflow the edge region of glass laminates, smoothing the edges, sealing the interlayer, and encapsulating it within the laminate, thereby eliminating defects and preventing delamination.
The method results in a smooth, polished edge finish with improved strength and reduced moisture ingress, enhancing the durability and installation quality of glass laminates.
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Figure US2025055890_04062026_PF_FP_ABST
Abstract
Description
Atorney Docket No.: SP24-312PCTMETHODS FOR MAKING PLASMA EDGED GLASS LAMINATES AND PLASMA EDGED GLASS LAMINATES PROVIDEDCROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of priority under 35 U.S.C. § 119 of U.S. Provisional Application No. 63 / 725,611 filed November 27, 2024, the content of which is incorporated herein by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure pertains to a glass laminate having a smooth finished edge, and more particularly, to a glass laminate with a fire polished edge and seal along at least a portion of the perimetrical edge of the glass laminate, including related methods.BACKGROUND
[0003] Glass laminates, like those utilized in interior architectural applications for decorative and functional advantages, can be challenging to mechanically process and cut to size. Interior architecture glass laminates are rising in popularity and for installation, in-situ processing and cutting to size is required. Abrasive water jet cutting is a one such technology commonly utilized to cut glass laminate stacks to size for installation. Unfortunately, abrasive cutting inherently damages the glass surface, glass, edge, and can impact the strength of the adhesive layer between the glass layer and the backer substrate, which can cause deleterious effects to the glass laminate. These deleterious effects resulting from abrasive waterjet cutting can cause glass laminate cracking, breakage, or even liquid ingress / delamination from moisture present between the glass layer and backer substrate. There is a problem with existing mechanical processing (including abrasive wateijet cutting) of glass laminates, as the resulting outer edge / cut region of a cut glass laminate has damage like flaws, chips, cracks, and moistureAtorney Docket No.: SP24-312PCT present in these damaged regions of the glass layer and the backer layer can drive interlayer vulnerability to liquid ingress in the laminate.SUMMARY
[0004] The problems caused by mechanical processing, including abrasive waterjet cutting, of glass laminates can be solved through one or more embodiments of the present disclosure, which include plasma torch edge processing of glass laminate. Heating the edge region of a mechanically processed glass laminate to a sufficient temperature drives surface reflow and reflow, which provides improved and advantaged glass laminates, including at least one or more of the following: smooth edge finish; strengthened edge compared to as-cut; removal of moisture or water from the perimetrical edge of the glass laminate; healing of damage and flaws caused by mechanical processing; edge sealing of the glass laminate; encapsulation of the interlayer between the glass layer and the backer substrate; improved handling and installation of the glass laminates, and longer life of installed glass laminates, among other advantages and improvements as compared to commercially available glass laminates.
[0005] Through one or more embodiments of methods, as described herein, the plasma torch enables a plasma plume and / or high-temperature region to cause glass reflow to finish the edge of the glass surface and / or encapsulate the interlayer between the glass layer and the backer layer while edge-finishing the glass layer of the glass laminate. When the glass layer surface along the edge is sufficiently heated to cause reflow, and reflow is maintained for a sufficient duration of time, the surface damages in the glass layer of mechanically processed / cut glass laminates can be reduced and / or eliminated, and the glass layer surface and / or edge surface can become smooth and pristine.
[0006] Without being bound by a particular mechanism and / or theory, when the glass is heated up to the annealing temperature, then glass reflow occurs and as the glass is heated, the glass surface becomes more viscous. As the glass on the surface of the edge region (which has theAtorney Docket No.: SP24-312PCT flaws and / or damages caused by cutting) becomes more viscous, the glass on the surface region begins to flow again, which we call the ‘reflow’. As reflow occurs in the glass surface and / or edge region, glass chips and / or shards from cutting migrate and / or remelt with the reflow With sufficient heating, the surface is fully reflowed, which means at least one of (a) the flaws created by mechanical processing to cut the laminate are healed, (b) the glass edge is smoothed, (c) initiation sites for cracking and defect propagation are healed, and (d) any entrained or adhered water or moisture present on the edge or in the stack (from cutting the glass laminate) can be removed via vaporization / evaporation. Additionally, maintaining a reflow for a sufficient duration of time can cause the viscous glass to migrate over the edge of the interlayer to abut, adhere, or otherwise connect with the backer layer (thereby sealing the interlayer in the glass laminate). By edge-sealing the glass laminate, the edge-finished glass laminate is believed to have reduced likelihood of delamination, warping, out of plane distortion or other issues after installation.
[0007] According to a first aspect of the present disclosure provides a method, comprising: heating an edge portion of a glass sheet in a glass laminate via a plasma plume applied at a reflow angle of 30 to 60 degrees relative to the glass sheet; reflowing the edge portion to define a reflow zone, causing glass flow to heal at least one defect in the edge portion; and providing an edge-finished glass laminate having at least one portion of finished edge, wherein a finished edge comprises a polished edge and further wherein, the edge-finished glass laminate comprises an encapsulated interlayer.
[0008] In some embodiments, the reflow angle comprises at least 30 to not greater than 60 degrees. In some embodiments, the reflow angle comprises at least 40 to not greater than 50 degrees. In some embodiments, the reflow angle comprises at least 30 degrees; at least 35 degrees; at least 40 degrees; at least 45 degrees; at least 50 degrees; or at least 55 degrees. In some embodiments, the reflow angle comprises not greater than 35 degrees; not greater thanAtorney Docket No.: SP24-312PCT40 degrees; not greater than 45 degrees; not greater than 50 degrees; not greater than 55 degrees, or not greater than 60 degrees.
[0009] In some embodiments, the reflowing step comprises applying heat via a plasma plume for a sufficient time and temperature to heat the edge portion to an annealing temperature.
[0010] In some embodiments, the method comprises, before the heating step, mechanically processing a glass laminate to cut to size via abrasive waterjet cutting. In some embodiments, the method further comprises after the reflowing step, cooling the glass laminate.
[0011] In another aspect, a method is provided, comprising: heating an edge portion of a glass sheet in a glass laminate via plasma plume applied at a reflow angle of 30 degrees to 60 degrees relative to the glass sheet; reflowing the edge portion to define a reflow zone, wherein the reflow zone causes glass flow to heal at least one defect in the edge portion; and directing the reflow zone perimetrically around an edge of the glass sheet at the reflow angle; and providing a glass laminate with a polished edge and an encapsulated interlayer.
[0012] In another aspect, a glass laminate is provided, comprising: a glass layer; a backer layer; an interlayer positioned between the glass layer and the backer and configured to adhere the glass layer to the backer; and at least one portion of fire polished edge defined by a rounded edge profile and a reflow zone devoid of mechanical cutting flaws.
[0013] In some embodiments, the glass layer is a sodalime glass or a borosilicate glass.
[0014] In some embodiments, the glass layer has a cross-sectional thickness of: at least 0.3 mm to not greater than 5 mm.
[0015] In some embodiments, the interlayer comprises: the interlayer is a cured resin, an adhesive, a thermoplastic polymer, a polyvinyl butyral, ethylene vinyl acetate (EVA), a thermoplastic polyurethane, an ionoplast, or a combination thereof.Atorney Docket No.: SP24-312PCT
[0016] In some embodiments, the backer layer comprises: a metal material; a interior architecture image or decor plate, a second glass layer, a polymer layer, or combinations thereof.
[0017] In some embodiments, the backer layer has a cross-sectional thickness of: at least 0.2 mm to not greater than 5 mm.
[0018] In some embodiments, the cross-sectional thickness of the glass laminate is at least 1 mm to not greater than 8 mm. In some embodiments, the cross-sectional thickness of the glass laminate is at least 1 mm to not greater than 3 mm. In some embodiments, the cross-sectional thickness of the glass laminate is at least 1.5 mm to not greater than 4 mm.
[0019] In another aspect, a glass laminate is provided, comprising: a glass layer; a backer layer; an interlayer positioned between the glass layer and the backer and configured to adhere the glass layer to the backer; and a circumferential edge-finished region surrounding the glass layer, wherein the edge-finished region is defined by a round profile, no mechanical cutting defects, and further wherein the interlayer is retained inside the glass laminate via the edge- finished region.
[0020] Additional features and advantages will be set forth in the detailed description which follows, and in part 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.
[0021] 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 claims. The accompanying drawings are included to provide a further understanding, and are incorporated in and constitute a part of this specification. The drawings illustrate one or more embodiments, and together with the description serve to explain principles and operation of the various embodiments.Atorney Docket No.: SP24-312PCTBRIEF DESCRIPTION OF THE DRAWINGS
[0022] In the Drawings:
[0023] FIG. 1 is an embodiment of a process flow for a method of processing a glass laminate, in accordance with one or more aspects of the present disclosure.
[0024] FIG. 2 is another embodiment of a process flow for a method of processing a glass laminate, in accordance with one or more aspects of the present disclosure.
[0025] FIG. 3 is a schematic plan side view of an embodiment of an edge-finished glass laminate in accordance with one or more aspects of the present disclosure.
[0026] FIG. 4 is a series of images depicting the side profile of a cut edge of a glass sheet in a glass laminate undergoing plasma torch processing, showing the reflow across images A, B, and C, in accordance with one or more aspects of the present disclosure.
[0027] FIG. 5A and 5B are close-up images of the glass-edge region of a glass laminate that has been mechanically cut via abrasive water jet cutting, in accordance with one or more aspects of the present disclosure.
[0028] FIG. 6A and FIG. 6B depict a perspective side image before and after plasma torch processing, in accordance with one or more aspects of the present disclosure.
[0029] FIGs 7A-7C depict three images of experimental ranges evaluated in the reflow temperature, showing 0 degrees, 45 degrees, and 90 degrees, in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0030] Reference will now be made in detail to the present preferred embodiments, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts.Atorney Docket No.: SP24-312PCT
[0031] Referring to FIG 1 and FIG. 2, an embodiment of edge finishing an as-cut glass laminate is provided. The method steps include heating an edge portion of a glass laminate with a plasma jet from a plasma torch at a reflow angle; remelting the edge portion to define a reflow zone, concomitant with healing at least one defect in the region of the glass layer adjacent to the as- cut edge portion; and providing an edge-finished glass laminate with at least a portion of edge- finished glass laminate. In some embodiments, the edge-finished glass laminate includes a fire polished region from the reflow mechanism, such that any chips, cracks, flaws, and the like are reflowed into the glass edge and healed. In some embodiments, the edge finished region is a fire polished edge.
[0032] Referring to FIG. 1, in some embodiments, the glass laminate is treated only in certain areas having flaws or defects exceeding a certain threshold (e.g. chip indicative of future crack initiation site; crack indicative of future laminate stack break, delamination, or water ingress location, etc).
[0033] Referring to FIG. 2, in some embodiments, the method can optionally include finishing the perimeter edge of the glass laminate with the plasma jet, such that an edge-finished glass laminate is provided, with a smooth, round profile edge. In some embodiments, with a fire- polished edge finished region extending perimetrically around the glass laminate edge, the reflow is configured to direct the glass edge to extend over an outer edge of the interlayer, such that the interlayer is encapsulated or entrained within the glass laminate stack via the edge finished perimetrical edge.
[0034] Referring to FIG. 3, an embodiment of an edge-finished glass laminate is provided. As shown, the laminate 10 includes a glass layer (or glass sheet) 12 that’s attached to a backer layer 14 via an interlayer 16 positioned between the glass layer 12 and the backer layer 14. The laminate stack of glass layer, interlayer, and backer layer includes two major surfaces, a first primary surface of the laminate 24 on the glass layer 12 and a second primary surface 26 of theAtorney Docket No.: SP24-312PCT laminate on the backer layer 14. Along the edge of the stack of glass, interlayer, backer, there is an outer edge 18 of the laminate which extends along the outer edge of the glass laminate 10. As shown in Fig 3, the outer edge 18 is configured with an edge finish from one or more embodiments of causing a fire-polished reflowed edge 30 of the glass laminate 10. Here, the edge finished portion extends perimetrically around the outer edge 18 of the glass laminate 18, such that the interlayer 16 is encapsulated or retained inside the laminate stack, as defined by the sealed edge 22, where the edge finished portion 30 has been sufficiently reflowed so that it's migrated to a position to enclose the interlayer and connect to the backer layer 14.
[0035] Referring to FIG. 4, several images are shown in series, depicting the reflow progression through one or more methods of the present disclosure. Image A on the left is the initial, as-cut glass layer edge; while center image B is a partially reflowed glass edge of the glass layer, and finally, image C on the right is the edge-finished portion of the glass layer. As observed in viewing the progression from before to after, one or more embodiments of the present disclosure are configured to mitigate defects and / or flaws in the as-cut glass layer of a glass laminate, to provide a smoothed, round-edge profile with reduced and / or eliminated flaws and / or defects in the edge-polished region.
[0036] Referring to FIG. 5 A and 5B, as-cut edge profiles from two abrasive waterjet cut glass edges are shown. Although abrasive waterjet cutting is an effective process for cutting multilayer, multi-material laminate stacks (here, “glass laminates”), the quality of cut can vary significantly, with even significantly optimized cutting processes yielding sharp edges of the glass layer and potential chips or microcracks, among other items. FIG. 5 A is a typical example of waterjet cut glass surface with many flaws, chips, and cracks. Figure 5B is an example of an optimized waterjet cut glass surface, which has smaller-sized flaws and defects and an overall fewer total number of flaws and defects as compared to the traditional example of waterjet cutAtorney Docket No.: SP24-312PCT glass surface. One or more embodiments set forth herein have the advantage of providing improved edge quality of the as-cut waterjet cut glass surface.
[0037] Referring to FIG. 6A and 6B, comparative perspective side views of the edge of glass laminate are shown, before reflowing edge finish (FIG. 6A) and after reflowing edge finish (FIG. 6B). As observed from the figures, the glass surface in FIG. 6B looks shiny, since the reflow method has remelted the surface and eliminated and healed the flaws as the glass reflowed and the glass surface became smoother. Also, as shown in FIG. 6B, the area where the interlayer should be present also appears to have a shiny appearance. After reflowing, the reflow region resulted in the migration of the glass layer onto the backer layer, so the shiny region where the interlayer was in FIG. 6A is actually the edge profile region where the glass layer has undergone a physical surface reflow to be in contact with the backer in FIG. 6B.
[0038] In some embodiments, the total cross-sectional thickness of the glass laminate is between 1.5 mm and 3 mm, or between 1 mm and 4 mm, or between 2 mm and 5 mm.
[0039] In some embodiments, the interlayer is polyvinyl butyral, ethylene vinyl acetate (EVA), thermoplastic polyurethane, an ionoplast, or a combination thereof. In some embodiments the interlayer is a cured resin or an adhesive.
[0040] In some embodiments, the plasma edge finish is configured to provide a round finish on the glass edge, eliminate flaws and damage caused by cutting, and encapsulate the interlayer between the glass layer and the backer layer to reduce, prevent, and / or eliminate any moisture / liquid ingress into the stack edge.
[0041] In one aspect, a method comprises: cutting a laminate to size; edge finishing at least one edge portion with a plasma torch, wherein the plasma is directed towards the primary face of the glass edge at an angle of between at least 30 degrees to not greater than 60 degrees, wherein via the plasma jet, a fire-polished edge and seal over the interlayer is created in the glass laminate. In some embodiments, the fire polish (via plasma jet) smooths the flaws andAtorney Docket No.: SP24-312PCT defects in the glass layer of the laminate to heal the glass layer. In some embodiments, the fire polish edge configures the glass layer in a round edge profile. In some embodiments, the fire polish edge finish configures the glass layer with improved strength.
[0042] In some embodiments, the glass layer and the backer layer each have a glass composition. For example, one or both of the glass layer and the backer layer can have a soda lime glass composition, although other glass compositions can be used without limitation, such as aluminosilicate glass compositions and alkali aluminosilicate glass compositions. One or both of the glass layer and backer layer can be made by a float manufacturing process or a fusion draw manufacturing process. The glass composition can be a boro-aluminosilicate glass composition, such as an alkaline earth boro-aluminosilicate glass composition, or an alkali-free boro-aluminosilicate glass composition.
[0043] The thickness of the glass layer is the shortest straight-line distance between the first major surface and the second major surface of the glass layer. The thickness of the backer layer is the shortest straight-line distance between the first primary surface and the second primary surface.
[0044] The thickness of the backer layer can be greater than 2.2 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm, 7.5 mm, 8.0 mm, 8.5 mm, 9.0 mm, 9.5 mm, 10.0 mm, or within any range bound by any two of those values (e.g., from 3.0 mm to 5.5 mm, from 4.0 mm to 8.5 mm, and so on). The thickness 40 can be the same or can be different than the thickness 42.
[0045] The thickness of the glass laminate is the shortest straight-line distance between the first primary surface (glass layer outer surface) and the second primary surface (backer layer outer surface), first glass sheet 46 and the second glass sheet 48.
[0046] The thickness of the glass laminate is less than or equal to 2.2 mm, or even less than or equal to 1.0 mm.Atorney Docket No.: SP24-312PCT
[0047] In some embodiments, the interlayer has a thickness within a range of from 0.10 mm to 2.0 mm. For example, the thickness of the interlayer can be 0.10 mm, 0.25 mm, 0.50 mm, 0.55 mm, 0.75 mm, 1.0 mm, 1.3 mm; 1.5 mm, 2 mm, or within any range bound by any two of those values (e.g., from 0.65 mm to 1 mm, from 0.85 mm to 2 mm, and so on).
[0048] In embodiments, the interlayer is a polymer, such as a thermoplastic polymer, or an acoustic dampening polymer configured for noise reduction. For example, the acoustic dampening polymer can be configured with multiple layers (e.g. 3 layers of polymer), one layer (i.e. a central or middle layer in 3-layer polymer example) of which is a relatively soft polymer compared to the other two layers. In other embodiments, the interlayer is an adhesive, such as an optically clear adhesive. In still other embodiments, the interlayer is a cured resin. Selfcuring or cross-linkable resins may be used, such as UV curable resins or room temperature vulcanizing (RTV) materials. Suitable resins are UV curable acrylics or self-cross-linking acrylics, as well as optically clear thermosetting resins. To form the glass laminate of these embodiments, the liquid resin is applied between the glass layer and the backer layer, and then cured.
[0049] As non-limiting examples, the lamination to form the glass laminate may be done by any of several techniques known to individuals skilled in the art, such as nip roll-autoclave, vacuum bag-autoclave, flat bed-autoclave, or any combination of temperature / vacuum / pressing to soften the interlayer and achieve bonding to the glass layer to the backer, taking into account the backer material.
[0050] It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the claims.
[0051] In some embodiments, the plasma jet is configured direct heat to an edge portion with a sufficient temperature and time duration to melt the very surface of the glass layer. With such melting (reflow) of the very surface of the glass layer at this edge portion, sharp edges, chips,Atorney Docket No.: SP24-312PCT and / or cracks created by the cutting step are removed (reflowed via the reflow step) to define a smooth, polished edge finish in the glass laminate. In some embodiments, the edge portion of the glass layer of the glass laminate is heated with a torch (plasma jet) to create a reflow, such that the surface tension from the reflow functions to smooth out any irregularities and / or surface discontinuity (flaws, cracks, chips, and the like), in the edge imparted by the cutting step. In some embodiments, the cutting is abrasive waterjet cutting.Experiment for Plasma Reflow of glass laminate edge.
[0052] Experiments were completed in order to better-under stand plasma edge finishing and to evaluate the appropriate edge of plasma application to the glass layer surface. In order to prove the concept over a various range of process conditions, the variable evaluated for effective reflow and sealing is the angle of plasma plume jet application relative to the major surface of the glass layer. As it was determined experimentally, when the angle of the plasma plume jet application was in the range of 0 degrees to 30 degrees relative to the glass surface, reflow was not successful. Instead, in the range of 0 to 30 degrees relative to the glass surface, failure in the form of glass breakage was observed.
[0053] As it was determined experimentally, when the angle of the plasma plume jet application was in the range of 60 degrees to 90 degrees, reflow of the glass layer was too high and the glass surface was again observed to have a lot of breakage. As it was determined experimentally, when the angle of the plasma plume jet application was in the range of 30 degrees to 60 degrees, reflow of the edge region of the glass surface occurred and the glass was sufficiently viscous to move the edge portion into a rounded edge finish and also heal the flaws and damages in the glass edge.
[0054] Figs. 7A to 7C depict the plasma plume jet applied to the glass laminate’s edge at various angles of flow. Fig. 7A depicts the experimental design where the plasma plume jetAtorney Docket No.: SP24-312PCT was applied to the glass layer edge of the glass laminate at an angle of flow 0 degrees, where reflow was not successful. Fig. 7B depicts the experimental design where the plasma plume jet was applied to the glass layer edge of the glass laminate at an angle of flow 45 degrees, where reflow was successful. Fig. 7C depicts the experimental design where the plasma plume jet was applied to the glass layer edge of the glass laminate at an angle of flow 90 degrees, where reflow was not successful.
[0055] Referring to the experimental case where the angle of flow was 45 degrees, the glass laminate’s edge was successfully edge-finished, as shown in the Figs 6A (before) and Fig. 6B. (after). In comparing the before and after perspective images of the glass laminate, it is observable that the glass edge and glass side of Fig. 6B is much shiner, which is indicative of the finished, smooth surface (which reflects light). Additionally, it’s observed that in comparing Fig. 6A to 6B, the overall side edge of the edge-finished glass laminate is shiner, since in this instance, the glass edge was sufficiently reflowed so that the glass reflowed to seal the interlayer between the glass layer and the backer layer.Reference Numbers:Laminate 10Glass layer (sometimes referred to as glass sheet) 12Backer layer 14Interlayer 16Edge of laminate 18Stack edge 20First primary surface of laminate 24Second primary surface of laminate 26Cut edge 28Edge-finished (reflowed) edge of glass laminate 30 (e.g. fire polished)Sealed edge of glass laminate 22Plasma torch 70Plasma jet or plume 72
Claims
Atorney Docket No.: SP24-312PCTIn the Claims:What is claimed is:
1. A method, comprising: a. heating an edge portion of a glass sheet in a glass laminate via a plasma plume applied at a reflow angle of 30 to 60 degrees relative to the glass sheet; b. reflowing the edge portion to define a reflow zone, causing glass flow to heal at least one defect in the edge portion; and c. providing an edge-finished glass laminate having at least one portion of finished edge, wherein a finished edge comprises a polished edge and further wherein, the edge-finished glass laminate comprises an encapsulated interlayer.
2. The method of claim 1, wherein the reflow angle comprises at least 30 to not greater than 60 degrees.
3. The method of claim 1, wherein the reflow angle comprises at least 40 to not greater than 50 degrees.
4. The method of claim 1, wherein the reflowing step comprises applying heat via a plasma plume for a sufficient time and temperature to heat the edge portion to an annealing temperature.
5. The method of claim 1, wherein the method comprises, before the heating step, mechanically processing a glass laminate to cut to size via abrasive waterjet cutting.Atorney Docket No.: SP24-312PCT6. The method of claim 1, wherein the method further comprises after the reflowing step, cooling the glass laminate.
7. A method, comprising: a. heating an edge portion of a glass sheet in a glass laminate via plasma plume applied at a reflow angle of 30 degrees to 60 degrees relative to the glass sheet; b. reflowing the edge portion to define a reflow zone, wherein the reflow zone causes glass flow to heal at least one defect in the edge portion; and c. directing the reflow zone perimetrically around an edge of the glass sheet at the reflow angle; and d. providing a glass laminate with a polished edge and an encapsulated interlayer.
8. A glass laminate, comprising: a. a glass layer; b. a backer layer; c. an interlayer positioned between the glass layer and the backer and configured to adhere the glass layer to the backer; and d. at least one portion of fire polished edge defined by a rounded edge profile and a reflow zone devoid of mechanical cutting flaws.
9. The glass laminate of claim 8, further wherein the glass layer is a sodalime glass or a borosilicate glass.
10. The glass laminate of claim 8, wherein the glass layer has a cross-sectional thickness of: at least 0.3 mm to not greater than 5 mm.Atorney Docket No.: SP24-312PCT11. The glass laminate of claim 8, wherein the interlayer comprises: the interlayer is a cured resin, an adhesive, a thermoplastic polymer, a polyvinyl butyral, ethylene vinyl acetate (EVA), a thermoplastic polyurethane, an ionoplast, or a combination thereof.
12. The glass laminate of claim 8, wherein the backer layer comprises: a metal material; a interior architecture image or decor plate, a second glass layer, a polymer layer, or combinations thereof.
13. The glass laminate of claim 8, wherein the backer layer has a cross-sectional thickness of: at least 0.2 mm to not greater than 5 mm.
14. The glass laminate of claim 8, wherein the cross-sectional thickness is at least 1 mm to not greater than 8 mm.
15. A glass laminate, comprising: a. a glass layer; b. a backer layer; c. an interlayer positioned between the glass layer and the backer and configured to adhere the glass layer to the backer; and d. a circumferential edge-finished region surrounding the glass layer, wherein the edge-finished region is defined by a round profile, no mechanical cutting defects, and further wherein the interlayer is retained inside the glass laminate via the edge-finished region.