[go: up one dir, main page]

WO2025081367A1 - Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci - Google Patents

Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci Download PDF

Info

Publication number
WO2025081367A1
WO2025081367A1 PCT/CN2023/125156 CN2023125156W WO2025081367A1 WO 2025081367 A1 WO2025081367 A1 WO 2025081367A1 CN 2023125156 W CN2023125156 W CN 2023125156W WO 2025081367 A1 WO2025081367 A1 WO 2025081367A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
strip shaped
shaped section
strip
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/125156
Other languages
English (en)
Inventor
Wei Xiao
Jiahui JI
Feng He
Holger Wegener
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schott Glass Technologies Suzhou Co Ltd
Schott AG
Original Assignee
Schott Glass Technologies Suzhou Co Ltd
Schott AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schott Glass Technologies Suzhou Co Ltd, Schott AG filed Critical Schott Glass Technologies Suzhou Co Ltd
Priority to PCT/CN2023/125156 priority Critical patent/WO2025081367A1/fr
Priority to TW113129875A priority patent/TW202530146A/zh
Publication of WO2025081367A1 publication Critical patent/WO2025081367A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/065—Forming profiled, patterned or corrugated sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions

Definitions

  • the invention relates to manufacturing of glass sheets in general. Specifically, the invention concerns the production of glass sheets having one or more sections with reduced thickness to facilitate bending of the glass.
  • Foldable electronic displays make use of a front cover or carrier that is sufficiently flexible to allow for a tight bending.
  • providing a both foldable and durable cover or carrier for an electronic display has been proven to be challenging.
  • a structured metal plate is frequently used as back-plate for flexible support of the display.
  • a tuned folding force is provided by local structuring.
  • stainless steel or titanium with a thickness of about 0.15 mm is used for this back-plate.
  • a disadvantage of metal carriers is that they are prone to fatigue due to the ductility of the material.
  • UTG ultrathin glass
  • cover glasses with hinge structures or thinned folding regions have become more and more interesting for manufacturers. These cover glasses have thicker glass in the main display areas and either structured or thinned folding regions for the necessary flexibility.
  • Next generation foldable display devices even go beyond a single-fold design and incorporate multi-fold functionality for even bigger screens.
  • Popular solutions are for instance the so-called S-, G-, or book-fold displays.
  • the S-and G-type folding variant features two folding regions with two different bending radii.
  • the S-type is particularly special, because in contrast to previous foldable devices, this display design will feature foldable cover glass also on the unprotected outside of the device when it is in folded state. In this case, also at least one folding region will be exposed on the outside of the device in an especially vulnerable state, as the glass is under tensile stress in its folded state.
  • locally structured glasses will probably not be the best solution as cover glasses, due to their delicate structured hinge regions and the potential optical disadvantages associated with those. Hence, locally slimmed glass could be a viable solution.
  • etching techniques are mainly being manufactured via etching from a uniformly thick preform glass.
  • the folding regions are being thinned.
  • These methods can include or be combined with: locally applying etching solution to the fold region, by either applying an etching paste or liquid, masking of the folding region etc., dipping of only the folding region into an etching solution, locally machining (laser or mechanical machining) the folding region with subsequent etching, or application of etching solution with local heating to increase etching speed only in the target area and other methods.
  • etching solution with local heating to increase etching speed only in the target area and other methods.
  • US 2021/0107829 A1 discloses a method, wherein the glass is thinned using laser ablation.
  • the ablation process may be carried out in the hot state of the glass ribbon.
  • laser ablation requires high beam energies and typically results in narrow trench like structures as determined by the beam profile. To obtain a broader region of reduced stiffness, a multitude of parallel trenches are introduced.
  • a method for producing a foldable glass article comprising shaping the glass of a glass sheet in a hot-forming step by distributing the softened glass so that the glass thickness is reduced along the strip shaped section.
  • a foldable glass article as disclosed herein is understood as a glass article which may be bent at the strip shaped section so that the adjacent sections change their angle from 0° to at least 90°, preferably at least 120°. If fully folded, a booklet like shape is obtained, with the adjacent sections being in opposition at an angle of or near 180° or even more than 180°, e.g. if the opposing edges are brought into contact in folded state.
  • the method is based on the principle that the structuring of the glass article is achieved by hot forming rather than subtractive forming methods such as ablation or cutting out holes.
  • the glass may be distributed with the method according to this disclosure without removing glass from the glass sheet.
  • a device for carrying out the method as disclosed herein to produce the glass article accordingly has means to distribute glass in softened or molten state to produce a glass sheet having a strip shaped section with a reduced average thickness compared to adjacent sections so that the stiffness of the strip shaped section is reduced and the glass sheet can be folded about the strip shaped section without breaking.
  • a foldable plate shaped glass article may be obtained, having two opposed side faces and a circumferential edge and a strip shaped section with a reduced average thickness compared to adjacent sections so that the stiffness of the strip shaped section is reduced due to the reduced average thickness so that the glass sheet can be folded about the strip shaped section without breaking, the strip shaped section extending laterally along the side faces and being terminated at both of its ends by the circumferential edge.
  • the surface profile of at least one of the side faces and/or the thickness profile within the strip shaped section is continuously curved, wherein the surface in the center of the strip shaped section is concavely curved and wherein this concave surface curvature changes into a convex surface curvature in direction from the center towards the adjacent sections so that a centered concavely curved surface portion is arranged between two convexly curved surface portions, wherein the curved surface portions form a depression.
  • the strip shaped section may have a closed surface, i.e. is lacking of openings.
  • the glass article 1 producible with the methods or devices described herein is useable for foldable consumer electronics such as mobile phones, tablet computers, laptops, screens (Monitors or TV's) .
  • foldable glasses of the present invention can also be used as back-plates for respective foldable mobile phones.
  • an electronic device comprising a glass article as described herein.
  • the glass article may in this regard in particular serve as a front cover, or a substrate or support for electronic components.
  • Fig. 1 shows an orifice of a drawing apparatus.
  • Fig. 2 shows a drawing apparatus with an orifice as shown in Fig. 1.
  • Fig. 3 shows a glass article producible with the apparatus of Figs. 1, 2.
  • Fig. 4 is a side view of a further embodiment of a glass article.
  • Fig. 5 shows examples of orifices to produce glass articles with multiple folding regions.
  • Fig. 6 shows examples of glass articles in folded state.
  • Fig. 7 shows an orifice for producing a glass ribbon with multiple folding regions and oppositely arranged protrusions.
  • Fig. 8 shows a section of a glass ribbon with cutting lines to produce foldable glass articles therefrom.
  • Fig. 9 shows a further embodiment of an apparatus, having local heating means.
  • Fig. 10 shows a variant of a glass article with thickened transition sections between a section having reduced thickness and adjacent sections.
  • Figs. 11, 12 show variants of orifices having local heating means.
  • Fig. 13 shows parts of a float glass drawing apparatus.
  • Fig. 14 shows an apparatus for down drawing having various means to introduce slimmed regions transversely to the drawing direction.
  • Fig. 15 and Fig. 16 show an embodiment of an overflow fusion trough.
  • Fig. 17 illustrates method steps to produce a locally slimmed glass sheet by heating a strip-shaped region and drawing the sheet vertically to the longitudinal direction of the strip-shaped region.
  • Fig. 18 illustrates method steps to produce a locally slimmed glass sheet by re-drawing a glass sheet.
  • Fig. 19 and Fig. 20 show embodiments of glass sheets or glass articles produced by fusing glass stripes.
  • Fig. 21 shows a waterfall down draw apparatus.
  • Fig 22 shows a top view onto the device shown in Fig. 21.
  • Fig. 23 and Fig. 24 show an overflow-fusion device set up to combine glass melt streams.
  • Fig. 25 and Fig. 26 show variants of the embodiment of Figs. 23, 24 with single sided troughs.
  • Fig. 27 shows a down drawing apparatus with a guiding body.
  • a preferred method to distribute the glass is drawing the glass sheet from a melt or a preform.
  • the method for forming the glass sheet comprises forming a glass sheet in form of a glass ribbon from a glass melt by drawing, wherein the glass is distributed before the glass of the glass ribbon cools down and solidifies.
  • Figs. 1 and 2 show an example of a device 30 for producing a glass sheet 2 in form of a glass ribbon 20 by down drawing.
  • distributing the glass may be accomplished by at least one protrusion locally reducing or obstructing the flow of a glass melt, in particular by extending into the flow of a glass melt.
  • the protrusion locally reduces the flow and thereby also reduces the resulting glass thickness.
  • the protrusion 14 shown in Fig. 1 is merely an example.
  • the shape, width and height of the protrusion 14 can be varied in many ways.
  • the apparatus 30 comprises an elongated orifice 12 in a duct or container 15, through which the glass melt 21 flows and is drawn into glass ribbon 20.
  • a drawing force may be exerted by means of drawing rollers 13.
  • Fig. 1 shows an example of an orifice 12 in top-view.
  • a glass sheet 2 in form of a glass ribbon 20 is formed by down drawing the glass 10 from a slit shaped orifice 12, the orifice 12 having at least one protrusion 14 narrowing its width.
  • This protrusion 14 which may be located on one or either sides of the orifice 12, or the corresponding narrowing of the orifice distribute the glass 10 so that the thickness of the glass ribbon 20 is lowered in a strip shaped section 3 extending downwards from the protrusion 14. Glass articles that are foldable at the strip shaped section 3 may then be cut from the glass ribbon, with the cutting direction extending transversely, in particular vertically to the longitudinal direction of the glass ribbon 20 or the strip shaped section 3, respectively.
  • a foldable glass article 1 which may be produced by cutting the glass ribbon 20 vertically to the drawing direction is shown in Fig. 3.
  • the glass article 1 is generally plate shaped, having two opposed side faces 101, 102 and a circumferential edge 104.
  • a strip-shaped section 3 where the plate shaped article 1 is locally slimmed extends along the surface of the article 1.
  • the strip shaped section 3 extends all over one of the side faces 101 so that the strip shaped section 3 is terminated at two opposed sections of the edge 104.
  • section 3 is terminated at both of its ends 33, 34 by the circumferential edge 104.
  • the surface within the strip shaped section 3 is continuously curved. Further, the surface in the center of the strip shaped section 3 is concavely curved.
  • the concave surface curvature in the center changes into a convex surface curvature in direction from the center towards sections 5, 7 which are adjacent to the strip shaped section 3.
  • a centered concavely curved surface portion 37 of strip shaped section 3 is arranged between two convexly curved surface portions 36, 38.
  • the curved surface portion forming a depression 105 which results in the local slimming or reduced average thickness, respectively.
  • This continuously curved surface profile and/or the thickness profile of the strip shaped section 3 is achieved by the distribution of the glass during the hot forming.
  • the smoothly rounded profile is also advantageous to achieve a high breaking strength. Generally, it is preferred to distribute the glass during hot forming so that a rather shallow depression compared to its width is formed.
  • the width of the depression 105 is at least three times, preferably at least five times, particularly preferred at least ten times larger than the depth of the depression 105.
  • the width of a strip shaped section 3 generally may be between 5 mm and 50 mm, preferably between 8 mm and 20 mm.
  • the thickness of a glass article 1 as described herein is preferably between 50 ⁇ m and 1500 ⁇ m, preferably 70 ⁇ m to 1000 ⁇ m.
  • a typical thickness for a glass article useable as a back plate for a smart-phone or tablet display is in the range from 60 ⁇ m to 200 ⁇ m. This thickness is referred to as the general or average thickness outside of a strip-shaped section 3, i.e. within adjacent sections 5, 7.
  • the minimum thickness within the strip shaped section 3 of reduced thickness is 15 ⁇ m to 150 ⁇ m. These dimensions of course also depend on the thickness of the glass article 1, i.e. its thickness outside of a strip-shaped section 3. Therefore, the above given ranges overlap, although of course the dimensions are always chosen so that the average thickness in a strip-shaped section 3 is lower than in adjacent sections 5, 7.
  • the orifice 12 may be asymmetric in that a protrusion 14 is arranged on only one side of the orifice 12. This may result in an asymmetric profile of the glass article 1, similarly to the example of Fig. 3, wherein a depression 105 is formed in one of the side faces 101. As shown in Fig. 3, the opposite side face 102 may be flat as shown. However, depending on the viscosity of the glass while it is distributed to form the specific profile disclosed herein, due to fluid dynamics a depression may form on both sides 101, 102 of the glass article 1, even if there is a protrusion in the orifice on only one side. Fluid dynamics in the molten glass can lead to a depression also from the opposite side of the glass.
  • the surface profiles of both side faces 101, 102 and/or the thickness profile within the strip shaped section 3 are continuously curved so that the side faces 101, 102 are approximating each other towards the center of the strip shaped section 3.
  • Such an embodiment is shown in the side view of Fig. 4.
  • the obstructing feature such as a protrusion in the orifice contour
  • the depression 105 is deeper than the opposite depression 106.
  • the depression 105 within the strip shaped section 3 on one of the side faces 101 has a larger depth than the depression on the opposed side face 102.
  • the depth of the depressions 105, 106 may be similar or equal so that the surface profiles are substantially mirror symmetric.
  • a glass article 1 according to this disclosure and as exemplary shown in Figs. 3 and 4 is characterized by a fire polished surface, therefore having very low surface roughness
  • a foldable plate shaped glass article 1, in particular producible using the method or device 30 according to this disclosure is provided, wherein the glass article 1 has two opposed side faces 101, 102 and a circumferential edge 104 and a strip shaped section 3 with a reduced average thickness compared to adjacent sections 5, 7 so that the stiffness of the strip shaped section 3 is reduced due to the reduced average thickness so that the glass sheet 1 can be folded about the strip shaped section 3 without breaking, the strip shaped section 3 extending laterally along the side faces 101, 102 and being terminated at both of its ends 33, 34 by the circumferential edge 104, wherein both side faces 101, 102 including the surface of the strip shaped section 3 have an average surface roughness of less than 0.5 nm, and/or, wherein both side faces 101, 102 including the surface of the strip shaped section
  • the breaking stability if the glass article 1 is chemically strengthened. Chemical strengthening produces a compressive force at the side faces.
  • a difference in expansion due to ion exchange between strip shaped section 3 and the adjacent sections 5, 7 may result, which may cause a wrinkle phenomenon.
  • the compressive stress (CS) and/or the depth of the ion exchange layer (DoL) may be adapted to the local thickness of the glass article 1 in a way that at least one of the parameters CS, DoL is lower in the strip shaped section 3 compared to the adjacent sections 5, 7.
  • Figs. 1 and 2 only a single protrusion 14 is provided in the orifice 12.
  • Fig. 5 shows three examples of orifices to produce glass articles 1 which may be folded at least twice, or, respectively, have more than one folding region or strip shaped section 3.
  • the orifice of example (a) has two protrusions 14 on the same side 121 of the orifice.
  • a glass article 1 produced from a glass ribbon drawn from such an orifice may be folded in a book-fold manner with the outer sections folded inwards.
  • Example (b) is a variant wherein one of the protrusions is wider than the other one. This leads to strip shaped foldable sections 3 of different widths. This is suitable to produce a foldable glass article where the outer sections can be folded inwardly, with one of the sections overlapping the other one. This kind of fold is generally referred to as a “G-fold” .
  • the protrusions are offset along the orifice 12 as in the other examples, but arranged on opposite side of the orifice 12. This way, the depressions produced by the protrusions are on opposite sides of the glass article, so that the glass article 1 is suited for a S-shaped fold.
  • Fig. 6 shows the respective glass articles derivable using these orifices in folded state.
  • Example (a) shows a book-like folded article 1 which may be obtained with an orifice 12 according to Fig. 5, example (a) The article 1 comprises two laterally spaced strip shaped sections 3 of reduced average thickness and adjacent sections 5, 7, 9, wherein the section 7 is arranged between the strip shaped sections 3. The article 1 can be folded as shown with the outer sections 5, 9 folded inwards towards each other.
  • Example (b) is a “G-fold” article 1 which is similar to example (a) , however, with the sections 5, 7, 9 being dimensioned so that the outer sections 5, 9 overlap in folded state.
  • this article 1 may be produced with an orifice 12 according to example (b) of Fig. 5.
  • the strip shaped section 3 between adjacent sections 7, 9 may be broader than the other strip shaped section 3 to provide a larger bending radius so that the section 9 is folded on top of section 5.
  • a glass article 1 folded in S-shape is shown in example (c) .
  • the outer sections 5, 9 are folded in opposite directions so that they face opposite side faces 101, 102 of the centered section 7 arranged between the two strip shaped sections 3. Folding a glass article 1 in this manner may be facilitated if an orifice 12 according to example (c) of Fig. 5 is used, producing a glass ribbon having strip shaped sections 3 with deeper depressions on opposite side faces.
  • a glass ribbon 20 is drawn, having at least two laterally spaced strip shaped sections 3 with reduced average thickness, wherein a glass article 1 is produced, in particular cut from the glass ribbon so that the glass article 1 has at least two strip shaped sections 3 with at least three sections 5, 7, 9 foldably connected together by the strip shaped sections 3.
  • the glass article 1 having at least two strip shaped sections 3 with at least three sections 5, 7, 9 foldably connected together by the strip shaped sections 3 may of course comprise one or more further strip shaped sections 3 and adjacent sections with substantially uniform thickness.
  • a single glass article 1 may be obtained from a glass ribbon 20 per horizontal cut.
  • the down drawing method as well as other drawing methods such as overflow-fusion drawing enable to draw glass ribbons 20 with a large width.
  • a glass ribbon 20 with a multitude of strip like sections 3 having reduced average thickness that are laterally spaced in a direction perpendicular to the drawing direction or, respectively, to the longitudinal direction of the glass ribbon 20 is produced, wherein the glass ribbon 20 is cut along at least one cutting line 40 extending along and between two strip like sections 3 and is further cut transversely, preferably perpendicularly to the longitudinal direction of the glass ribbon 20 to obtain a multitude of glass articles 1, each having at least one strip shaped section 3 with reduced average thickness.
  • Fig. 7 shows an orifice for producing a glass ribbon with multiple folding regions and oppositely arranged protrusions to carry out the embodiment of the method as explained above.
  • the orifice 12 has a multitude of protrusions 14.
  • the orifice 12 is symmetric, having opposed protrusions 14 on both sides 120, 121. This arrangement will produce symmetric depressions along the strip shaped sections 3.
  • the glass ribbon produced with the orifice 12 may be longitudinally cut between every second pair of sections 3. The cutting positions are shown by hatched lines.
  • Fig. 8 schematically shows a section of a glass ribbon 20 producible with an orifice 12 according to Fig. 7.
  • the vertical cutting lines 40 extend along the drawing direction and correspond to the hatched lines shown in Fig. 7.
  • the cutting lines 41 extend transversely, in particular perpendicularly to cutting lines 40 and may be referred to as horizontal cutting lines. If the glass ribbon 20 is cut along both lines 40 and lines 41, a multitude of foldable glass articles 1, or at least intermediate products thereof are obtained. Of course, other cutting patterns may be applied.
  • each foldable glass article 1 has two laterally spaced strip shaped section 3.
  • glass articles having a single strip shaped section 3 similarly to the examples of Fig. 3 and Fig. 4 may be produced as well.
  • Drawing a glass article 2 in form of a glass-ribbon 20 with one or more strip-shaped sections 3 with reduced average thickness can be somewhat challenging regarding controlling the cooling of such ribbons. as the differences in thickness will lead to different cooling speeds of the respective sections.
  • the thin sections will cool down much more rapidly than the thicker sections and may therefore become rigid, while adjacent sections are still soft and deformable.
  • a thickness control of the individual sections is therefore complicated and stress may build up in the ribbon, which can lead to breakage of the ribbon upon bending into the horizontal transport direction at the cold end of the melting tank or during separation of individual sheets.
  • One possibility to avoid building up of strains and achieve homogeneous cooling is to apply a local temperature control.
  • local heaters could be used to adapt the temperature in the one or more thinned strip-shaped sections 3 to adjacent sections.
  • local heating means 25 may be provided to elevate the temperature within the one or more strip-shaped sections 3 to adapt the temperature therein to adjacent sections 5, 7, wherein the heating means 25 are in particular located or arranged so that elevating the heating to the respective strip-shaped section 3 is applied at a position, where the glass of the adjacent sections 5, 7 is still softened or formable, respectively.
  • local heating may also be used to control the thickness of the glass ribbon 20.
  • the means to distribute glass in softened or molten state to produce a glass sheet 2 having a strip shaped section 3 with a reduced average thickness compared to adjacent sections 5, 7 may comprise local heating means.
  • a glass sheet 2 in form of a glass ribbon 20 is formed by drawing, wherein the glass 10 while still in a soft state is locally heated to a higher temperature along a strip shaped region 16 compared to adjacent regions of the glass ribbon 20 so that its viscosity along this region 16 is lower than in adjacent regions, wherein the glass thickness is lowered along the strip shaped region 16 due to the drawing.
  • the strip shaped region 16 i.e. its longitudinal direction generally extends parallel to the drawing direction, or parallel to the longitudinal direction of the glass ribbon.
  • the local heating may be performed using a laser beam 251 from a laser 250 as local heating means.
  • other heating means such as coil heaters may be employed.
  • two laser beams 251 are used so that two laterally spaced strip-shaped regions 16 are formed extending along the longitudinal direction of glass-ribbon 20. Due to the elevated temperature within the strip-shaped region 16, the viscosity of the glass is locally reduced. This way, these regions are drawn out thinner, compared to untreated regions. Accordingly, a strip-shaped section 3 having a reduced average thickness is formed along the region 16.
  • heating can be done from both sides of the glass as well, leading to uniform thinning of the glass on either side.
  • heating with different heat source can be combined, like for instance precise laser heating at certain spots with a broader treatment zone of a coil heater. This can for instance be relevant to smooth out transition areas from the thinned region into the thicker areas of the glass.
  • One possible feature of this method is that the glass is distributed so that it moves out of the heated region 16 to form thickened transition sections between the strip-shaped section 3 and the adjacent sections 5, 7, having substantial constant thickness.
  • Fig. 10 shows such a variant of a glass article 1 with thickened transition sections 50, 70 between a strip-shaped section 3 having reduced thickness and adjacent sections 5, 7.
  • the transition sections 50, 70 may be advantageous for the stability and breaking strength of the glass article 1.
  • a lateral component of the drawing force can be applied in combination with the local heating, e.g. by the drawing rollers to stretch the rippon transversely to the drawing direction.
  • a drawing force is applied having a component perpendicular to the drawing direction.
  • the drawing rollers 13 might be oriented slightly inclined against the longitudinal direction of the glass ribbon 20, applying not only a force in a vertical drawing direction but as well a lateral component, that stretches the glass ribbon 20 and thereby reduces its thickness at the region of lowest viscosity.
  • the formation of thickened transition sections between the strip-shaped section 3 and the adjacent sections 5, 7, having substantial constant thickness can be reduced or completely avoided.
  • a secondary heating in the forming region or below can be achieved by a locally heated down draw orifice in form of either a straight slid or a slid with constrictions, or a protrusion 12, respectively.
  • Fig. 11 shows an orifice 12 with a local heating means 25, e.g. a coil heater 252 to locally elevate the temperature of the glass melt passing the orifice 12 to a temperature above adjacent regions of the glass ribbon 20 to be formed.
  • a local heating means 25 e.g. a coil heater 252 to locally elevate the temperature of the glass melt passing the orifice 12 to a temperature above adjacent regions of the glass ribbon 20 to be formed.
  • a strip like region 16 in the glass ribbon 20 with elevated temperature and extending along the longitudinal direction of the glass ribbon 20 is formed similarly to the example of Fig. 9.
  • Fig. 12 shows a variant of the embodiment of Fig. 11.
  • the orifice 12 has at least one protrusion 14 similar to the embodiment of Fig. 1.
  • local heating means 25 e.g. a coil heater 252 are provided in or at the orifice 12 to heat the glass melt passing the constriction, or protrusion 14, respectively, to elevate its temperature compared to adjacent regions.
  • the local heating means 25 is arranged at the side 121 of the orifice 12 with the protrusion 14.
  • the heating means 25 may be arranged on the opposite side 120 of the orifice. In both cases, a strip shaped region 16 with elevated temperature is formed along the glass ribbon 20.
  • drawing processes which may be employed for the method according to this disclosure have been described on the basis of down drawing a glass ribbon 20 from an orifice 12. However, other drawing processes may be used as well.
  • Another drawing process is the float process.
  • the glass melt is drawn while floating on a liquid metal bath.
  • Fig. 13 shows an example of a device 30 for producing a glass article 1 with a float bath 45 on which a glass sheet in form of a glass ribbon 20 is formed by means of a float process.
  • distributing the softened glass 10 so that the glass thickness is reduced along a strip shaped section 3 may also comprise blowing a gas jet 49 onto the softened glass 10 or glass melt 21.
  • a gas nozzle 47 is provided to blow the gas jet 49 onto the still molten or softened glass ribbon 20.
  • the gas jet 49 displaces the glass 10 outwardly, so that in combination with the movement in drawing direction as indicated by the arrow, a strip-shaped section 3 having reduced average thickness is formed.
  • the gas jet 49 may also be used to locally heat the glass 10.
  • a multitude of nozzles 47 may be arranged in spaced apart relationship to introduce a multitude of spaced apart sections 3 into the glass ribbon 20.
  • a glass sheet 2 in form of a glass ribbon 20 is formed by drawing, wherein a multitude of strip shaped sections 3 with a reduced average thickness compared to adjacent sections 5, 7 are formed in the drawing process, with the longitudinal direction of the strip shaped sections 3 extending transversely, preferably perpendicular to the drawing direction.
  • This structuring of the glass ribbon 20 may in particular be achieved by at least one of
  • Fig. 14 shows an apparatus 30 set up for down drawing a glass ribbon 20 and having various means to produce slimmed strip shaped sections 3 oriented transversely to the drawing direction. These means may be employed alternatively or in combination.
  • heating means 25 may be integrated into the container 15 or the orifice 12 as shown. Again, coil heaters 252 or other electrical heating elements may be used. As well, heating means 25 such as coil heaters 252 that have a sufficiently fast response to produce narrow, well-defined regions of elevated temperature may be arranged below the orifice 12, as also shown. Further, heat energy may be deposited onto the glass ribbon 20 by a confined radiation source such as a laser 250, whose laser beam 251 may be swept in a direction transversally to the drawing direction to produce the strip shaped sections of elevated temperature. Due to the elevated temperature of this regions, the glass is softer than in intermediate regions, causing the regions with elevated temperature to expand under the applied drawing force, thereby reducing their thickness so that the strip-shaped sections 3 with reduced thickness are obtained.
  • a confined radiation source such as a laser 250, whose laser beam 251 may be swept in a direction transversally to the drawing direction to produce the strip shaped sections of elevated temperature. Due to the elevated temperature of this regions, the glass is softer
  • drawing speed or drawing force can be controlled and alternate the drawing speed or drawing force.
  • speed of the drawing rollers 13 can be changed in an oscillating fashion, or rollers 13 with non-circular, e.g. elliptical shape, and/or eccentrically arranged rotation axis can be used.
  • the drawing rollers 13 have elliptical shape and have an eccentrical rotation axis to oscillate the drawing speed and/or drawing force.
  • an overflow fusion supply trough can be adapted as well to vary the flow of molten glass at different locations to obtain the desired thickness profile.
  • Figs 15 shows a cross section of an overflow-fusion trough 18 in operation and
  • Fig. 16 shows a top view onto the trough 18.
  • the glass melt 21 is constantly fed into channel 19 of the trough 18 so that the glass melt 21 overflows the trough 18 and runs down its side walls 180, 182.
  • a glass sheet 2 in form of a glass ribbon 20 is formed by overflow-fusion from a trough 18 having a protrusion 14 on at least one of its sides, in particular on at least one of its side walls 180, 182, as also realized in the shown example.
  • a protrusion may alternatively be also on top of the channel one or both of the sides to reduce the glass flow.
  • protrusions are provided on both opposite side walls 180, 182.
  • a convenient approach is glass redrawing which is also a drawing process.
  • Process steps according to one embodiment based on re-drawing are shown in Fig. 17.
  • a glass sheet 2 of preferably uniform thickness is provided and may be locally heated along a strip shaped region 16, so that the glass in the strip shaped region 16 softens, and wherein the glass sheet 2 is then drawn in a direction transversely to the strip shaped region 16 so that the strip shaped region 16 is expanded and the glass thickness within the strip shaped region 16 is lowered.
  • Heating may be accomplished by appropriate local heating means 25, in particular as already described with respect to embodiments of Figs. 9 and 14.
  • the glass of the glass sheet 2 is in a cold or at least rigid state so that only the glass within the strip shaped region 16 is softened.
  • the glass sheet 2 is already in a hot state and may even be soft, wherein the glass in the strip shaped region 16 is further heated and softened so that its viscosity is relatively lower compared to adjacent regions.
  • Fig. 17 (a) shows a glass sheet 2 and local heating means 25 arranged on top of one of the side faces 101. A strip shaped region 16 below the local heating means 25 is heated until the glass softens. With the local temperature close to or above the softening point, the regions intended to be slimmed will have a much lower viscosity.
  • Fig. 17 (a) shows the glass sheet 2 after drawing.
  • the heated region 16 is widened and thinned, now forming a strip-shaped section 3 having a reduced average thickness with respect to adjacent sections 5, 7.
  • the added width due to the drawing is typically relatively smaller when the initial thickness of the glass is bigger when targeting a same thickness difference. Furthermore, typically, there will be some constriction taking place at the edges of the thinned/drawn out section 3. Thus, advantageously, the processed glass sheet will be cut to size to obtain the glass article 1. However, in some cases it might also be advantageous to have the thinned areas recessed from the main edge to protect the slimmed section 3.
  • a second redraw process could be done in the direction of the strip shaped section 3 to further reduce the thickness of the whole glass sheet to the desired dimensions.
  • a preform with an already pre-shaped thin and thick regions can be drawn out to the target thickness.
  • the thickness of different regions will be reduced by a same ratio by this process. So, the initial thickness profile shall be well designed to reach a desired final thickness profile.
  • This step may be used with a glass article not only obtained with the process as described with respect to Fig. 17 but with all method variants producing a locally slimmed glass sheet, such as down drawing or overflow fusion.
  • a glass sheet 2 with a strip-shaped section 3 with reduced average thickness is provided and heated so that the glass 10 of the glass sheet 2 softens, and wherein the glass sheet 2 is drawn in a direction along the longitudinal direction of the strip-shaped section 3 to reduce the thickness of the glass sheet 2.
  • This process of re-drawing a locally slimmed glass sheet is illustrated in Fig. 18.
  • a strip-shaped region 16 is heated using local heating means 25. This region extends transverse, in particular vertically to the longitudinal direction of strip-shaped section 3
  • a drawing force is applied in direction along the strip-shaped section 3 is applied as indicated by the arrow. This causes a re-drawing of the heated region which expands along the drawing direction and at the same time reduces its thickness.
  • Chart (b) of Fig. 18 shows the re-drawn glass article 2 having a smaller thickness and higher length than the initial glass sheet 2.
  • the glass sheet 2 having a strip-shaped section 3 of reduced average thickness may be subjected to an etching medium. This will uniformly reduce the thickness of the glass sheet. Thus, the average thickness of the strip shaped section 3 is further reduced by etching the glass sheet 2. A similar effect may be achieved with other glass removing methods, such as abrasive methods.
  • a glass sheet 2 having a strip-shaped section 3 of reduced average thickness, wherein the ratio of the thickness D of the glass sheet 2, which is the thickness of the sections 5, 7 adjacent to the strip-shaped section 3, to the minimum thickness D min at the strip-shaped section 3 is enlarged by uniformly removing glass from at least one of the side faces 101, 102 of the glass sheet 2.
  • the thickness D and the minimum thickness D min are indicated in chart (a) of Fig. 18.
  • Etching in particular for reducing the thickness of the glass article 1 also typically results in a specific surface quality.
  • a very homogeneous surface quality may be achieved.
  • a foldable plate shaped glass article 1, in particular producible using the method or device 30 according to this disclosure wherein the glass article 1 has two opposed side faces 101, 102 and a circumferential edge 104 and a strip shaped section 3 with a reduced average thickness compared to adjacent sections 5, 7 so that the stiffness of the strip shaped section 3 is reduced due to the reduced average thickness so that the glass sheet 1 can be folded about the strip shaped section 3 without breaking, the strip shaped section 3 extending laterally along the side faces 101, 102 and being terminated at both of its ends 33, 34 by the circumferential edge 104, wherein the combined surface of both side faces 101, 102 including the surface of the strip shaped section 3 has a roughness homogene
  • a method comprising combining and fusing glass melt streams or softened glass stripes having different widths to produce a glass ribbon in which the glass stripes or glass melt streams are arranged so that at least one strip shaped section 3 with reduced average thickness is produced.
  • Fig. 19 and Fig. 20 show embodiments of glass sheets 2 or glass articles 1 produced therefrom (e.g. simply by cutting the glass sheet 2 to size) produced according to the aforementioned embodiment of the method.
  • a glass sheet 27 is fused together with narrower glass stripes 29 so that a gap 22 remains between the glass stripes 29 that is bridged by glass sheet 27. Due to the gap, a strip shaped section 3 is formed having a reduced thickness compared to sections 5, 7, 9 having the combined thickness of the fused glass elements 27, 29.
  • a single strip-shaped section 3 is formed between glass stripes 5, 7, whereas Fig. 20 shows an embodiment with three spaced glass stripes 29, forming two strip-shaped sections 3, and thereby two folding areas between.
  • the glass element 27 and the glass stripes 29 may be fused, e.g. after re-heating until the glass softens.
  • this kind of distributing glass may instead be achieved by combining stripes of a glass melt, or glass melt streams, respectively.
  • the glass sheet 27 and glass stripes 29 are combined by gluing or, more generally, by a method other than fusing in softened state, i.e. by fixing them together below softening temperature.
  • a method for producing a foldable glass article 1 is contemplated, wherein the glass article 1 has a strip shaped section 3 with a reduced average thickness compared to adjacent sections 5, 7 so that the stiffness of the strip shaped section 3 is reduced due to the reduced average thickness so that the glass sheet 1 can be folded about the strip shaped section 3 without breaking, wherein a glass sheet 27 is connected to narrower glass stripes 29 so that the glass stripes 29 are laterally spaced apart with a gap 22 therebetween, so that a strip shaped section 3 having a reduced average thickness is formed along the gap 3.
  • fixing the stripes 29 to the glass sheet 27 may be performed by glueing and/or at a temperature, where the glass is not softened but rigid, e.g. at room temperature.
  • the glass body formed by combining and fixing the glass stripes to the glass sheet 27 may then be drawn out to reduce the thickness.
  • a glass-ribbon 20 is formed by a waterfall down draw method.
  • This apparatus as well as other devices discussed herein may have means to combine melt streams of different widths to produce a glass-ribbon 20 with at least one strip-shaped section 3 of reduced average thickness.
  • a device 30 for producing a glass article 1 using the waterfall down draw method is shown in Fig. 21 and the top view onto the device shows Fig. 22.
  • the device 30 may comprise a container 15 containing a glass melt 21, the container 15 having a slit 52 through which the glass melt flows out in a melt stream 23 and is guided over a lip 54, wherein this melt stream 23 preferably extends over the full width of the glass-ribbon 20 to be formed, and wherein a second container 16 with a second glass-melt 21 is provided, wherein the glass melt is released through laterally spaced slits 52 out of this second container 16 and guided over a lip 54, wherein the lip 54 of the second container 16 is arranged so that the glass melt streams 24 released from the lip 54 fall onto the glass melt stream 23 on the lip 54 of the first container 15 and combine or fuse with the melt stream 23.
  • the combined melt streams are released from the lip 54 of the first container 15, thereby forming the glass-ribbon 20 which is drawn by pairs of drawing rollers 13.
  • the glass melt streams 24 from the second container 16 have a gap 22 in between so that a thinned strip-shaped section 3 is formed in longitudinal direction of the glass-ribbon 20.
  • a waterfall down draw device may also have means to distribute the glass melt analogously to the down draw device as described with respect to Fig. 1 and Fig. 2. This means that in addition or in alternative to adding melt streams 24, one or more protrusions 14 may be provided at the slit or on the lip to locally reduce the thickness of melt stream 23.
  • Fig. 23 and Fig. 24 show an overflow-fusion device set up to combine glass melt streams 23, 24.
  • Fig. 23 shows a cross section and Fig. 24 a side view of the device 30.
  • Figs. 23, 24 shows a cross section and Fig. 24 a side view of the device 30.
  • the embodiments are based on an overflow-fusion device 30 having at least two troughs arranged on top of each other, wherein the troughs are set up to release glass melt streams having different widths and are combined to produce a glass ribbon having a strip-shaped section of reduced average thickness formed by a gap between two laterally spaced glass melt streams.
  • the top trough 185 releases two melt streams 24 laterally spaced with a gap on each side.
  • the upper edges of the trough 185 may have protrusions 14 as seen in Fig. 24 to divide the overflowing glass melt 21 into the laterally spaced glass melt streams 24.
  • the lower trough 18 produces glass melt streams 23 flowing down at its side walls 180, 182, the glass melt streams 23 having a larger width which defines the width of the glass ribbon 20 to be produced. All glass melt streams 23, 24 combine at the lower end of the lower trough 18 to form the glass ribbon 20. Due to the gap between the glass melt streams 24, the thickness of the glass ribbon 20 is locally reduced, thereby producing a strip-shaped section 3 having reduced average thickness.
  • a series of troughs could be provided to produce the laterally spaced glass melt streams 24.
  • the position of the troughs 18, 185 could be reversed, so that the lower trough releases the laterally spaced glass melt streams 24 having a reduced width and a gap therebetween.
  • at least one of the troughs could be asymmetric so that a glass melt stream is only released on one side thereof.
  • An inverse configuration is also possible, wherein the lower trough may have a protrusion as, e.g. in the examples of Figs. 15 and 16 and the top trough applies a uniform, wide ribbon on top of the separated or locally thinned lower ribbon.
  • Fig. 25 shows such a variant with two single sided troughs 18, 185.
  • Such asymmetric arrangements may be used to produce glass articles with an asymmetric thickness profile such as shown in Fig. 3 or Fig. 4.
  • the glass melt streams 23, 24 in this embodiment are only released to one side of the troughs 18, 185 and only flow along one of the side walls 182 of the lower trough.
  • a protrusion 14 on the upper edge of one of the troughs 18, 185 may be provided to produce laterally spaced glass melt streams 24 having a reduced width to achieve at least one strip-shaped section 3 having reduced average thickness.
  • a rotating cylinder 56 may be arranged under the lower end of the lower trough for guiding the combined glass melt streams 23, 24, as shown in the variant of Fig. 26.
  • in yet another embodiment of joining multiple glass flows into one ribbon, or distributing the glass by combining glass melt flows, respectively comprises producing a glass sheet in the form of a glass ribbon by updrawing. It is possible to produce glass laminates, wherein a first ribbon is drawn through a Fourcault orifice, while infusing a second glass flow into a reservoir on top of the same Fourcault orifice, which is then drawn upwards with the first ribbon.
  • a glass ribbon 20 and a glass article 1 cut therefrom, having a strip-shaped section 3 may be produced by using two or more second glass flows for the thicker sections of the glass ribbon.
  • updrawing is less suited to produce very thin glasses.
  • a device 30 comprising an updrawing apparatus with a Fourcault orifice having a least one protrusion 14 to produce a glass ribbon 20 having a strip-shaped section 3 of reduced average thickness.
  • FIG. 27 shows a schematic example of a device 30 comprising a down drawing apparatus with a guiding body 58.
  • one embodiment of this variant bases on providing a first glass melt flow 23 through an orifice 12 that flows down on a guiding body 58 arranged within and protruding downwards from the orifice 12, and providing second glass melt flows 24 having a width smaller than the first glass melt flow 23 and being laterally spaced apart with a gap in between, wherein the first glass melt flow 23 and the second glass melt flows 24 are combined on the guiding body 58, wherein the combined glass melt flows 23, 24 strip from the guiding body 58 at its lower end and are drawn to a glass ribbon 20, wherein the gap 22 between the second glass melt flows produces a strip-shaped section 3 on the glass ribbon 20 having a reduced average thickness with respect to adjacent sections.
  • the glass melt flows 23, 24 are combined at a position on the guiding body 58 below the orifice 12.
  • a side view shows a similar configuration of the glass melt flows with a gap 22 as shown, e.g, in Fig. 22.
  • the arrangement of the device of Fig. 27 is asymmetric in that the second glass melt streams are provided to only one side of the guiding body 58.
  • feeding the glass melt streams 24 from both sides is possible as well.
  • the second glass melt streams 24 are provided from a separate container 16.
  • the glass melt streams 23, 24 could also be fed from a single container 15 via appropriate ducts.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

L'invention concerne un procédé de production d'article en verre (1) pliable, l'article en verre (1) ayant une section en forme de bande (3) qui présente une épaisseur moyenne réduite par rapport aux sections adjacentes (5, 7), de telle sorte que la rigidité de la section en forme de bande (3) est réduite en raison de l'épaisseur moyenne réduite, ce qui permet de plier l'article en verre (1) autour de la section en forme de bande (3) sans qu'il ne se brise, le procédé consistant à façonner le verre (10) d'une feuille de verre (2) dans une étape de formage à chaud en distribuant le verre ramolli de façon à ce que l'épaisseur du verre soit réduite le long de la section en forme de bande (3).
PCT/CN2023/125156 2023-10-18 2023-10-18 Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci Pending WO2025081367A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2023/125156 WO2025081367A1 (fr) 2023-10-18 2023-10-18 Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci
TW113129875A TW202530146A (zh) 2023-10-18 2024-08-09 用於形成局部減薄玻璃之方法及裝置以及由其製造之可折疊板狀玻璃製品

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/125156 WO2025081367A1 (fr) 2023-10-18 2023-10-18 Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci

Publications (1)

Publication Number Publication Date
WO2025081367A1 true WO2025081367A1 (fr) 2025-04-24

Family

ID=95447591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/125156 Pending WO2025081367A1 (fr) 2023-10-18 2023-10-18 Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci

Country Status (2)

Country Link
TW (1) TW202530146A (fr)
WO (1) WO2025081367A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110799463A (zh) * 2017-05-15 2020-02-14 康宁公司 有轮廓玻璃制品和制造有轮廓玻璃制品的方法
CN113763810A (zh) * 2020-06-03 2021-12-07 三星显示有限公司 盖窗的制造方法、盖窗以及包括其的显示装置
KR102381327B1 (ko) * 2021-02-01 2022-04-01 단국대학교 천안캠퍼스 산학협력단 응력발생을 최소화하기 위하여 글라스층에 응력감소용 홈을 구비한 폴더블 디스플레이 및 그의 제조방법
CN115331560A (zh) * 2022-08-31 2022-11-11 京东方科技集团股份有限公司 折叠显示屏以及玻璃的制造方法
CN115512611A (zh) * 2021-06-23 2022-12-23 三星显示有限公司 覆盖窗制造方法
WO2023038977A1 (fr) * 2021-09-13 2023-03-16 Corning Incorporated Substrats pliables et procédés de fabrication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110799463A (zh) * 2017-05-15 2020-02-14 康宁公司 有轮廓玻璃制品和制造有轮廓玻璃制品的方法
CN113763810A (zh) * 2020-06-03 2021-12-07 三星显示有限公司 盖窗的制造方法、盖窗以及包括其的显示装置
KR102381327B1 (ko) * 2021-02-01 2022-04-01 단국대학교 천안캠퍼스 산학협력단 응력발생을 최소화하기 위하여 글라스층에 응력감소용 홈을 구비한 폴더블 디스플레이 및 그의 제조방법
CN115512611A (zh) * 2021-06-23 2022-12-23 三星显示有限公司 覆盖窗制造方法
WO2023038977A1 (fr) * 2021-09-13 2023-03-16 Corning Incorporated Substrats pliables et procédés de fabrication
CN115331560A (zh) * 2022-08-31 2022-11-11 京东方科技集团股份有限公司 折叠显示屏以及玻璃的制造方法

Also Published As

Publication number Publication date
TW202530146A (zh) 2025-08-01

Similar Documents

Publication Publication Date Title
JP6680673B2 (ja) 薄いガラス製品を成形する装置及び方法
US20220332626A1 (en) Apparatus and method for processing a glass substrate
TWI238149B (en) Method and apparatus for manufacturing thin glass panes
EP1710212A1 (fr) Procédé et dispositif pour la fabrication de feuilles de verre plates
KR20120038962A (ko) 판유리의 제조 장치 및 판유리의 제조 방법
WO2025081367A1 (fr) Procédé et dispositif de formation de verre localement aminci, et article en verre pliable en forme de plaque fabriqué avec ceux-ci
KR20060042932A (ko) 얇은 유리창을 생산하는 장치 및 드로잉 탱크
KR20130040232A (ko) 유리 리본을 연속적으로 형성하는 장치 및 방법
JP2018516218A (ja) 溶融ガラス材料を冷却する装置および方法
US20190202729A1 (en) Antibody-coated nanoparticle vaccines
US20190016621A1 (en) Apparatus and method of manufacturing composite glass articles
KR20180112051A (ko) 유리 시트의 분리 방법
JP5075228B2 (ja) ガラス板、プレス成形用素材、光学素子、薄板ガラスそれぞれの製造方法
JP2014189421A (ja) スクライブ線加工装置、スクライブ線加工方法および板ガラスの製造方法
TW564240B (en) Sheet glass forming apparatus
JP2001192217A (ja) 板硝子の迅速連続製法
JP2001180950A (ja) 連続薄肉板硝子の改良製法
CN112368244B (zh) 玻璃物品的制造方法以及制造装置
TW201718417A (zh) 用於形成玻璃製品的裝置及方法
TW202317487A (zh) 用於製造具有雙相和可調節流體流量的玻璃的設備和方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23955694

Country of ref document: EP

Kind code of ref document: A1