US20140342120A1 - Method for production of glass components - Google Patents

Method for production of glass components Download PDF

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Publication number
US20140342120A1
US20140342120A1 US14/265,765 US201414265765A US2014342120A1 US 20140342120 A1 US20140342120 A1 US 20140342120A1 US 201414265765 A US201414265765 A US 201414265765A US 2014342120 A1 US2014342120 A1 US 2014342120A1
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United States
Prior art keywords
blank
glass
deformation
width
deformation zone
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Abandoned
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US14/265,765
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English (en)
Inventor
Frank Buellesfeld
Ulrich Lange
Ralf Biertuempfel
Lisa Pudlo
Helge Jung
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Schott AG
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Schott AG
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Publication date
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Assigned to SCHOTT AG reassignment SCHOTT AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIERTUEMPFEL, RALF, DR., LANGE, ULRICH, DR., BUELLESFELD, FRANK, DR., JUNG, HELGE, PUDLO, LISA
Publication of US20140342120A1 publication Critical patent/US20140342120A1/en
Priority to US14/675,301 priority Critical patent/US9682883B2/en
Priority to US15/585,360 priority patent/US10611662B2/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/037—Re-forming glass sheets by drawing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Definitions

  • the present invention relates to a method for the production of glass components, a redrawing apparatus for conducting such a method as well as a glass component.
  • a glass piece is partially heated and drawn in the longitudinal direction with the help of suitable mechanical equipment.
  • the glass piece the blank
  • the heating zone at a constant speed and when the heated glass is drawn with a constant speed, then this results in a reduction of the cross-section shape of the blank which depends on the ratio of the speeds.
  • tubular blanks are used, then again tubular products are prepared, but with smaller diameter.
  • the cross-section shape of the products is similar to that of the blank, wherein for the most part it is even desirable to achieve a reproduction of the blank in a reduced scale of 1:1 by suitable measures (see EP 0 819 655 B1).
  • an oblong blank is fixed on one end in a holder and heated at the other end in for example a muffle kiln. Once the glass has become deformable, it is drawn by the exertion of drawing force at the end of the blank being fixed in the holder. When during that the blank is moved forward into the muffle, then with a suitable selection of the temperatures this results in a product with a smaller cross-section, but a similar geometry. For example, a blank with circular cross-section is drawn into a glass fiber. The selection of the speeds of drawing the product of for example a component and optionally moving forward the blank determines the reduction factor of the cross-section. Normally, the ratio of thickness to width of the cross-section of the blank remains constant. In the case of drawing glass fibers this is desired, because starting from a blank with circular cross-section a glass fiber having also a circular cross-section can be drawn.
  • a component having a cross-section with a higher width and the same thickness is only possible, when a blank having a cross-section with a higher width or lower thickness is used.
  • the use of a blank having a higher width often fails due to the impossible producibility, and the use of a blank having a lower thickness is increasingly inefficient, since the blank during redrawing has to be exchanged more often.
  • EP 0 819 655 B1 a method for forming glass is described. In this case in the forming step also redrawing can be used. But it is not described, how the ratio of width to thickness (B/D) is adjusted. Here after heating the glass is locally heated or cooled for manipulating the geometry.
  • the object of the present invention is the provision of an efficient method for the production of glass components. Furthermore, a method should be provided which makes it possible to increase the ratio of width to thickness of the blank (B/D) in comparison to the ratio of width to thickness of the glass component (b/d).
  • a method for the production of flat glass components should be provided, through which from a blank having a width B and a thickness D a flat glass component having a width b and a thickness d can be prepared, wherein the ratio b/d is much higher than the ratio B/D.
  • the method for redrawing glass according to the present invention serves for example for the production of flat glass components. It comprises the following steps:
  • the method is characterized in that the deformation zone is very small in comparison to the state of the art.
  • the deformation zone extends over the whole width of the blank. “Height” of the deformation zone means the extent thereof in the direction into which the blank is drawn.
  • a temperature T2 may prevail, at which the glass of the blank has a viscosity ⁇ 2 of between 104 dPas and 108 dPas.
  • the width b of the drawn glass component increasingly decreases with increasing viscosity in the deformation zone.
  • the drawing speed is increased for achieving a target value of 100 ⁇ m for the thickness d of the glass component
  • the width b of the glass component in comparison to width B of the blank would considerably be decreased. Therefore, for obtaining a flat glass component with a high ratio b/d it is advantageous, when the glass of the blank in the deformation zone has a viscosity ⁇ 2 which is lower than the viscosity of the respective glass at the softening point (EW).
  • the glass of the blank in the deformation zone has preferably a viscosity ⁇ 2 of at most ⁇ 107.6 dPas, further preferably at most 107.5 dPas, even further preferably at most 107.0 dPas, exceptionally preferably at most 106.5 dPas.
  • a viscosity ⁇ 2 which is lower than the viscosity of the respective glass at the softening point is also advantageous, because the drawing force being required for drawing the glass increasingly increases with increasing viscosity.
  • a lower viscosity is also associated with a lower required drawing force.
  • the viscosity ⁇ 2 of the glass of the blank in the deformation zone should also not be too low, since otherwise a uniform drawing of the glass becomes more difficult.
  • the glass of the blank in the deformation zone has a viscosity ⁇ 2 of at least 104.0 dPas, further preferably at least 104.5 dPas, even further preferably at least 105.0 dPas, exceptionally preferably at least 105.8 dPas.
  • the invention described here may be combined with a cooling of the edge region of the blank in analogy with U.S. Pat. No. 3,635,687 A, to achieve an even higher width and/or a better thickness distribution. Also a higher edge temperature is possible for achieving a better thickness distribution.
  • the deformation zone is the part of the blank with a thickness of 0.95*D up to 1.05*d.
  • this is the part of the blank which during the method at a certain time point has temperature T2.
  • T2 At this temperature the viscosity of the glass of the blank is in a range which allows deformation of the glass.
  • the blank has an upper end and a lower end.
  • the deformation zone is located between the upper and the lower ends. Beyond the deformation zone the temperature of the blank is preferably lower than T2. Because of that the deformation of the blank substantially only occurs in the region of the deformation zone. Above and below this region preferably the thickness and also the width remain constant.
  • the term “blank” is used, when the glass is processed in this method, only after the end of the final process step according to the present invention the product is called “glass component”.
  • the increase of the ratio of width to thickness of the blank is substantially achieved by the measure that the thickness d of the glass component produced is substantially lower than the thickness D of the blank.
  • the thickness d is at most D/10, further preferably at most D/30 and particularly preferably at most D/75.
  • the glass component has preferably a thickness d of lower than 10 mm, further preferably lower than 1 mm, more preferably lower than 100 ⁇ m, further preferably lower than 50 ⁇ m and particularly preferably lower than 30 ⁇ m. With the present invention it is possible, to produce such thin glass components in high quality and with relatively large surface area.
  • width b of the glass component produced in relation to width B of the blank is hardly decreased.
  • the ratio B/b is preferably at most 2, further preferably at most 1.6 and particularly preferably at most 1.25.
  • the method can be conducted in a redrawing apparatus which is also according to the present invention.
  • the redrawing facility comprises a holder in which one end of the blank can be fixed.
  • the holder is preferably located in an upper section of the redrawing apparatus. Then, the blank is fixed with its upper end in the holder.
  • the redrawing apparatus comprises at least one heating facility.
  • the heating facility is preferably arranged in a central region of the redrawing apparatus.
  • the heating facility may preferably be an electric resistance heater, a burner arrangement, a radiation heater, a laser with or without laser scanner or a combination thereof.
  • the heating facility is preferably designed such that it can heat the blank being disposed in a deformation region in such a manner that the deformation zone being designed according to the present invention is heated to temperature T2.
  • the deformation region is a region which is preferably located inside the redrawing apparatus.
  • the heating facility increases the temperature of the deformation region and/or a part of the blank to a temperature which is so high that a blank which is disposed in the deformation region is heated within its deformation zone to temperature T2.
  • a heating facility which is suitable for targeted heating of only a part of the blank, such as a laser, then the temperature in the deformation region is hardly increased.
  • the deformation region has preferably a height which results in a deformation zone having a height of at most 6*D (in particular at most 100 mm), preferably at most 5*D (in particular at most 40 mm) and particularly preferably at most 4*D (in particular at most 30 mm). Therefore, according to the heating manner and the blank dimensions the deformation region can be designed in different lengths.
  • the heating facility increases the temperature in the deformation region and/or a part of the blank which preferably has only such an extent that in the blank the deformation zone being designed according to the present invention is heated to temperature T2.
  • the parts of the blank which are above and below the deformation zone have preferably a temperature which is lower than T2. According to the present invention, this is preferably achieved by a heating facility comprising one or more baffles which shadow those parts of the blank which are beyond the deformation region.
  • a heating facility allowing a focused heating of the blank in the deformation region, such as for example a laser or a laser scanner, can be used.
  • a further alternative embodiment relates to a heating facility with only low height which is disposed near to the deformation zone so that substantially the heat does not spread into regions beyond the deformation region.
  • the heating facility may be a radiation heater, wherein the heating effect of which is focused and/or limited to the deformation region by suitable radiation guiding and/or restricting means.
  • a KIR (short-wave IR) heater may be used, wherein by shadowing a deformation region is created which is very small according to the present invention.
  • cooled (with gas, water or air) baffles may be used.
  • a further heating facility which may be used is a laser. In this case for the radiation guidance of the laser a laser scanner may be used.
  • the apparatus may comprise a cooling facility being preferably arranged in a lower region of the redrawing facility, in particular directly below the heating facility.
  • the viscosity of the glass is preferably changed to values of >109 dPas so that no appreciable deformation takes place any longer.
  • This cooling is preferably conducted such that it results in a viscosity change of at least 106 dPas/s.
  • temperatures T3 in a range of 400 to 1000° C.
  • the method according to the present invention preferably comprises the further step of: cooling the blank after leaving the deformation region.
  • the further cooling of the blank to viscosities >109 dPas may be achieved by cooling at ambient temperature (e.g. 10 to 25° C.). But the blank may also be cooled in an active manner in a fluid, such as for example in a gas stream. It is particularly preferable, when the product is cooled so slowly in a cooling zone which follows the deformation zone that the residual tensions at least allow subsequent cross-cutting as well as the removal of sheet edges without any introversive cracks.
  • the deformation region is arranged such and/or the heating facility is designed such that the deformation zone is created within the blank.
  • the deformation zone is that part of the blank which during the process has a thickness of 0.95*D to 1.05*d.
  • the viscosity of the glass at the respective site decreases so much that the blank can be drawn. This means that the blank becomes longer.
  • the thickness D of the blank becomes lower.
  • the redrawing facility comprises a drawing facility which preferably exerts drawing forces at a part of the blank below the deformation region, in particular at the lower end of the blank.
  • the drawing facility is preferably arranged in a lower region of the redrawing facility.
  • the drawing facility may be designed such that is comprises rolls acting on opposing sides of the blank.
  • the blank may detachably be mounted with a lower end at a second holder.
  • the second holder is a component of the drawing facility.
  • a weight may be mounted which then draws the blank into the longitudinal direction.
  • the drawing force used is lower than 350 N/400 mm blank width (B), further preferably lower than 300 N/400 mm blank width, even further preferably lower than 100 N/400 mm blank width, exceptionally preferably lower than 50 N/400 mm blank width.
  • the drawing force is higher than 1 N/400 mm blank width, further preferably higher than 5 N/400 mm blank width, even further preferably higher than 10 N/400 mm blank width, exceptionally preferably higher than 20 N/400 mm blank width.
  • the blank is fed into the direction of the deformation zone so that the method can be conducted in a continuous manner.
  • the redrawing apparatus preferably comprises a feeding facility which is suitable for moving the blank into the deformation region. So the redrawing apparatus can be used in continuous operation.
  • the feeding facility preferably moves the blank into the deformation region with a speed vN which is lower than the speed vZ with which the blank is drawn. So the blank is drawn into the longitudinal direction.
  • the ratio of vN to vZ is in particular ⁇ 1, preferably at most 0.8, further preferably at most 0.4 and particularly preferably at most 0.1. The difference of these two speeds determines the extent of the reduction of the width and the thickness of the blank.
  • the redrawing apparatus Prior to heating the blank is preferably preheated.
  • the redrawing apparatus preferably comprises a preheating zone in which the blank may be heated to a temperature T1.
  • the preheating zone is preferably arranged in an upper region of the redrawing apparatus.
  • Temperature T1 corresponds for example to a viscosity ⁇ 1 of 1010 to 1014 dPas.
  • the blank is preferably preheated, before it enters the deformation region. So a faster movement through the deformation region becomes possible, since the time which is necessary for achieving temperature T2 is shorter. With the preheating zone it can also be avoided that glasses with high temperature expansion coefficients break due to temperature gradients which are too high.
  • the deformation zone is heated to a temperature T2 which corresponds to a viscosity of the glass of the blank of 105.8 to 107.6 dPas, in particular 105.8 to ⁇ 107.6 dPas.
  • the viscosity of a glass depends on the temperature. At each temperature the glass has a certain viscosity.
  • the temperature T2 which is necessary for achieving the desired viscosity ⁇ 2 in the deformation zone depends on the glass.
  • the viscosity of a glass will be determined according to DIN ISO 7884-2, -3, -4, -5.
  • the blank preferably consists of a glass which is selected from fluorophosphate glasses, phosphate glasses, soda-lime glasses, lead glasses, silicate glasses, aluminosilicate glasses and borosilicate glasses.
  • the glass used may be a technical glass, in particular technical flat glass, or an optical glass.
  • Preferred technical glasses are soda-lime glasses and borosilicate glasses.
  • the glasses are display glasses or thin glasses for barrier layers in plastic laminates.
  • Preferred optical glasses are phosphate glasses and fluorophosphate glasses.
  • Phosphate glasses are optical glasses containing P2O5 as glass former. Then, P2O5 is the main component of the glass. When a part of the phosphate in a phosphate glass is replaced by fluorine, then fluorophosphate glasses are obtained.
  • fluorophosphate glasses instead of oxidic compounds such as for example Na2O the respective fluorides such as NaF are added to the glass mixture.
  • a flat blank is used, wherein according to the present invention a “flat blank” means that the width B of the blank is higher than the thickness D thereof.
  • the ratio of width to thickness of the blank (B/D) is at least 5, more preferably at least 7.
  • the blank has a thickness D of at least 0.05 mm, more preferably at least 1 mm.
  • the thickness is preferably at most 40 mm, more preferably at most 30 mm.
  • the width B of the blank is preferably at least 50 mm, more preferably at least 100 mm, most preferably at least 300 mm.
  • the length of the blank L is preferably at least 500 mm, more preferably at least 1000 mm. Generally it is true that the method can be conducted in a more efficient manner, when the blank is longer. So also still longer blanks may be considered and may be advantageous. Also an execution of a method may be considered in which the blank is fed in a continuous manner or the blank is uncoiled from a roll. Furthermore, preferably the following is true: L>B.
  • the method according to the present invention may also be conducted with a blank which is coiled on a first roll.
  • the blank is also fixed in an upper region of the redrawing apparatus, but in such a manner that the blank can be uncoiled from the roll.
  • the free end of the blank is then drawn by means of the drawing facility.
  • the drawing facility then draws the blank through the deformation region in a preferably continuous and constant manner so that within the blank a deformation zone according to the present invention is formed.
  • the glass component so prepared after passing the redrawing apparatus is preferably coiled onto a second roll.
  • the blank may comprise or may not comprise a sheet edge (a thickened boundary region).
  • the obtained glass component may be separated into single pieces. Furthermore, also the optionally somewhat thickened boundary regions (sheet edges) of the glass component may be cut off. If necessary, the glass component may also be polished and/or coated.
  • glass components with a very large useable surface area of glass can be obtained. This means that the part of the glass component with the required quality is very large. In the method of this invention the part of the surface area of sheet edges which optionally have to be removed before the use is small.
  • the glass components have a ratio of thickness to width of 1:2 to 1:20,000.
  • the blank can be classified in a streak class of at most C.
  • the streak class is a result of the optical path difference.
  • the optical path difference through a flat plate has to be ⁇ 30 nm.
  • the present invention is also a glass component which is obtainable by the method according to the present invention.
  • the glass component comprises at least one, in particular two fire-polished surfaces.
  • Fire-polished surfaces are very smooth, i.e. their roughness is very low.
  • the material to be polished is heated to such a high temperature that it flows and thus becomes smooth. Therefore the costs for the production of a smooth surface by fire-polishing are substantially lower than for the production of a highly smooth mechanically polished surface.
  • glass components with at least one fire-polished surface are obtained.
  • surfaces means the upper and/or lower sides, thus both faces which in comparison to the residual faces are the largest.
  • the fire-polished surface(s) of the glass components of this invention preferably have a root mean square roughness (Rq or also RMS) of at most 5 nm, preferably at most 3 nm and particularly preferably at most 1 nm.
  • the depth of roughness Rt of the thin glasses is preferably at most 6 nm, further preferably at most 4 nm and particularly preferably at most 2 nm. The depth of roughness will be determined according to DIN EN ISO 4287.
  • FIG. 1 shows in a side view the schematic structure of an exemplary embodiment of a redrawing apparatus according to the present invention.
  • FIG. 2 shows the schematic operating sequence of a method according to prior art.
  • FIG. 3 shows in a schematic manner a blank.
  • FIG. 4 shows in a schematic manner the mode of action of an optional radiation heater.
  • FIG. 5 shows the dependency of the widths of a glass product on the height of the deformation zone in a redrawing process.
  • FIG. 6 shows the distribution of thickness of a flat glass product across width of the product of example 3.
  • FIG. 7 shows in an exemplary manner average width b (gross width) of the drawn glass component and the drawing force which is required for drawing.
  • FIG. 8 shows in an exemplary manner the ratio of average width b (gross width) to average thickness d (net thickness) of the drawn glass component and the drawing force which is necessary for drawing.
  • FIG. 1 shows in a side view the schematic structure of an exemplary embodiment of a redrawing apparatus according to the present invention.
  • a blank 1 is moved top down through the apparatus.
  • the redrawing apparatus comprises two heating facilities 2 being arranged in a center region of the apparatus.
  • the heating facilities are shielded by baffles 3 in such a manner that a deformation region 4 is formed.
  • a part of blank 1 which is disposed in deformation region 4 is heated such that it reaches temperature T2. This part is the deformation zone 5 having height H.
  • Blank 1 is drawn down with the help of a drawing facility 6 which here is realized in the form of two driven rolls.
  • the feeding facility 7 here also designed in the form of rolls, feeds blank 1 in a speed which is lower than the speed of the drawing facility 6 , blank 1 is deformed in deforming region 4 . Because of that blank 1 becomes thinner; the thickness after the deforming step d is smaller than that prior the deforming step D.
  • preheating facility 8 Prior to feeding blank 1 into deformation region 4 it is preheated to temperature T1 with the help of preheating facility 8 , here symbolized by a burner flame. After passing the deformation region 4 blank 1 is fed into a cooling facility 9 , here symbolized by an ice crystal.
  • FIG. 2 shows the schematic operating sequence of a method according to prior art.
  • Blank 1 is moved into a deformation region 4 .
  • Deformation region 4 is heated with a heating facility 2 —here a resistance heater.
  • Blank 1 is heated such that in the glass a deformation zone 4 is formed, where the glass has low viscosity.
  • this deformation zone 4 is much larger than the deformation zone according to the present invention due to the lack of any limitation and the height of heating facility 2 . So a particularly distinct reduction of the width of blank 1 results.
  • a drawing facility 6 is shown which draws blank 1 into the longitudinal direction.
  • FIG. 3 shows in a schematic manner a blank with length L, thickness D and width B.
  • FIG. 4 shows in a schematic manner the mode of action of an optional radiation heater 6 which may be used as a heating facility.
  • an optional radiation heater 6 which may be used as a heating facility.
  • the height of deformation region 2 is different.
  • the deformation region 7 can be limited to obtain a deformation region 2 with a height which is as low as possible.
  • the distance and also the design of the heating facility may serve for the adjustment of the height of deformation region 2 .
  • FIG. 5 shows the dependency of the widths of a glass product on the height of the deformation zone in a redrawing process. It can be seen that a deformation zone with a lower height results in a reduction of the decrease of the width of the blank.
  • FIG. 6 shows the distribution of thickness d of a flat glass product across width b of the product of example 3.
  • the sheet edges at the rims of the glass product are relatively small.
  • the part with a homogenous low thickness can be used for the application of the glass product, but the sheet edges have to be removed.
  • the use of the method according to the present invention results in a particularly high rate of yield.
  • FIG. 7 shows in an exemplary manner average width b (gross width) of the drawn glass component and the drawing force which is required for drawing, each in dependency on the viscosity of the glass of the blank in the deformation zone, in the case of a blank having a thickness of 4 mm and a width of 400 mm which is fed into a muffle with a height of 40 mm with a speed of 5 mm/min.
  • the glass is drawn with 200 mm/min. It can be clearly seen that the required drawing force increasingly increases with increasing viscosity. Furthermore it can be seen that average width b of the product obtained increasingly decreases with increasing viscosity.
  • FIG. 8 shows in an exemplary manner the ratio of average width b (gross width) to average thickness d (net thickness) of the drawn glass component and the drawing force which is necessary for drawing, each in dependency on the viscosity of the glass of the blank in the deformation zone, in the case of a blank having a thickness of 4 mm and a width of 400 mm which is fed into the muffle with a height of 40 mm with a speed of 5 mm/min. The glass is drawn with 200 mm/min. It can be seen that the ratio b/d of the product obtained increasingly decreases with increasing viscosity. In comparison to the decrease of average width b with increasing viscosity shown in FIG. 7 the ratio b/d decreases in a relatively higher extent with increasing viscosity.
  • the optical glass fluorophosphate glass
  • this bar is inserted into the redrawing apparatus and heated in a preheating zone to a temperature which corresponds to the glass-transition point (ca. 1013 dPas).
  • a temperature which corresponds to the glass-transition point ca. 1013 dPas.
  • the leaving glass is guided through a cooling zone and fixed in a drawing facility and drawn faster than the blank is fed. So this results in a ribbon of glass having a width of 100 mm and an average thickness of 0.3 mm.
  • a flat glass (Borofloat®) having a width of 300 and a thickness of 10 mm is provided.
  • a preheating zone (ca. Tg) this blank is moved into the deformation zone.
  • This zone is heated over the whole width and a height of 20 mm to a minimum temperature which corresponds to a viscosity of 104 dPas to ⁇ 107.6 dPas.
  • the leaving glass is fixed in a drawing facility.
  • By a suitable selection of the speed of the blank and the speed of the product an average thickness of at most 100 ⁇ m is adjusted and the product is coiled onto a cylinder. So this results in a product having a width of at least 250 mm.
  • a blank made of flat glass (Borofloat®) having a width of 50 mm and a thickness of 1.1 mm is provided. After passing a preheating zone (ca. Tg) this blank is moved into the deformation zone. In the deformation zone the glass is heated over the whole width and a height of 3 mm to a temperature which corresponds to a viscosity of ca. 107 dPas. After passing a cooling zone on the leaving glass a weight is attached (drawing facility). By a suitable selection of the speed of the blank and the size of the weight an average thickness of about 50 ⁇ m is adjusted. So this results in a product having a width of at least 40 mm.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
US14/265,765 2013-04-30 2014-04-30 Method for production of glass components Abandoned US20140342120A1 (en)

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US14/675,301 US9682883B2 (en) 2013-04-30 2015-03-31 Method for production of glass components
US15/585,360 US10611662B2 (en) 2013-04-30 2017-05-03 Method for the production of glass components

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DE102013104409 2013-04-30
DE102013104409.3 2013-04-30
DE102014100750.6A DE102014100750B4 (de) 2013-04-30 2014-01-23 Verfahren zur Herstellung von Glaskomponenten
DE102014100750.6 2014-01-23

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140357467A1 (en) 2013-06-04 2014-12-04 Schott Ag Method for redrawing of glass
US9682883B2 (en) 2013-04-30 2017-06-20 Schott Ag Method for production of glass components
US10505129B2 (en) 2016-04-28 2019-12-10 Schott Ag Method of production of high-refractive thin glass substrates
US10619926B2 (en) 2016-10-07 2020-04-14 Corning Incorporated Process for sintering material
US10906831B2 (en) 2018-06-28 2021-02-02 Corning Incorporated Continuous methods of making glass ribbon and as-drawn glass articles from the same
CN114751635A (zh) * 2022-05-07 2022-07-15 河北省沙河玻璃技术研究院 一种制备高表面质量超薄柔性玻璃的方法
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US9682883B2 (en) 2017-06-20
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US20150274573A1 (en) 2015-10-01

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