WO2022049205A1 - Flachglasscheibe - Google Patents
Flachglasscheibe Download PDFInfo
- Publication number
- WO2022049205A1 WO2022049205A1 PCT/EP2021/074284 EP2021074284W WO2022049205A1 WO 2022049205 A1 WO2022049205 A1 WO 2022049205A1 EP 2021074284 W EP2021074284 W EP 2021074284W WO 2022049205 A1 WO2022049205 A1 WO 2022049205A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flat glass
- glass pane
- tensile stress
- depth
- pane
- Prior art date
Links
- 239000005357 flat glass Substances 0.000 title claims abstract description 124
- 239000002344 surface layer Substances 0.000 claims abstract description 60
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 35
- 239000011591 potassium Substances 0.000 claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 34
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 33
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 33
- 239000011734 sodium Substances 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000005368 silicate glass Substances 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims description 58
- 239000005354 aluminosilicate glass Substances 0.000 claims description 4
- 239000005388 borosilicate glass Substances 0.000 claims description 3
- 239000005361 soda-lime glass Substances 0.000 claims description 3
- 241000428199 Mustelinae Species 0.000 claims description 2
- 239000005329 float glass Substances 0.000 claims description 2
- 239000002585 base Substances 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 12
- 238000005342 ion exchange Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- 239000005336 safety glass Substances 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000006107 alkali alkaline earth silicate glass Substances 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000005345 chemically strengthened glass Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- FZFYOUJTOSBFPQ-UHFFFAOYSA-M dipotassium;hydroxide Chemical compound [OH-].[K+].[K+] FZFYOUJTOSBFPQ-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass 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
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
Definitions
- the invention relates to a flat glass pane which is made from a base material which is an alkaline silicate glass, in particular an alkali-earth-alkaline silicate glass, in particular a soda-lime glass, or a borosilicate glass, or an aluminosilicate glass.
- a base material which is an alkaline silicate glass, in particular an alkali-earth-alkaline silicate glass, in particular a soda-lime glass, or a borosilicate glass, or an aluminosilicate glass.
- thermal tempering columnloquially also referred to as thermal hardening or tempering
- the glass workpiece to be strengthened is heated to approx. 600 °C in a furnace and then quickly quenched to room temperature. This quenching solidifies the surface and the external dimensions of the component change only slightly afterwards. Compressive stresses arise on the surface of the glass workpiece, which ultimately lead to greater breaking strength.
- Thermal toughening is used in particular in the manufacture of toughened safety glass (ESG).
- ESG toughened safety glass
- the stress profile of toughened safety glass shows high internal tensile stresses throughout the glass thickness, which lead to a characteristic crumbly fracture pattern if the pane fails.
- the treatment time in the molten salt is disadvantageously very long. It is usually between 8 and 36 hours.
- the problem of long process times can be reduced by using expensive special glasses with the simultaneous use of complicated, in particular multi-stage, treatment processes.
- From DD 1579 66 is a method and a device for strengthening glass products known by ion exchange.
- the glass products are strengthened by alkali ion exchange between the glass surface and molten alkali salts.
- hollow glass products with the opening facing downwards or hollow glass products that are rotated or pivoted about a horizontal axis are sprinkled with molten salt.
- the salt is constantly circulated and passed through perforated plates in order to create a rain cascade for the glass products arranged in several layers.
- this method can only be used in an economically viable manner when using comparatively expensive special glass.
- DE 11 2014 003 344 T5 discloses chemically hardened glass for flat screens of digital cameras, cell phones, digital organizers, etc.
- the jar is preheated to a temperature of 100′′ Celsius and then immersed in molten salt.
- a flat glass pane which is characterized in that a. at least one surface layer is enriched in potassium and depleted in sodium and/or lithium, while an inner layer, in particular immediately adjacent to the surface layer, is not enriched in potassium and not depleted in sodium and/or lithium and that b.
- the flat glass pane has a compressive stress down to a compressive stress depth and from the compressive stress depth a tensile stress, the tensile stress increasing with increasing depth up to a maximum tensile stress arranged in the inner layer and/or wherein the progression of the tensile stress as a function of the depth does not have a linear section and/ or wherein the plot of tensile stress versus depth has no portion where the tensile stress is constant.
- the invention has the very special advantage that a smaller thickness of the flat glass pane is required, in particular for objects of daily use, due to the increased breaking strength.
- the consequence of this is that glass can be saved during production compared to flat glass panes conventionally made from the same glass material.
- the flat glass panes produced according to the invention can therefore have a lower intrinsic weight than flat glass panes conventionally produced from the same glass material.
- a flat glass pane blank is first produced in the known manner and heated to a primary temperature which is at most 50 Kelvin below and at most 30 Kelvin above the Littleton point of the glass material .
- the flat glass blank is preferably not suddenly quenched to room temperature, but to a higher temperature.
- the heated flat glass blank is preferably quenched to a quenching temperature which is at least 200 Kelvin and at most 550 Kelvin, in particular at least 200 Kelvin and at most 450 Kelvin, below the primary temperature.
- An ion exchange process can then take place, which results in at least one surface layer being enriched in potassium and depleted in sodium and/or lithium, while an inner layer, in particular immediately adjacent to the surface layer, is not enriched in potassium and not in sodium and/or lithium is depleted.
- Considerably shorter treatment times are required for the ion exchange process according to the invention than with known methods of chemical hardening in order to achieve a significant overall increase in the strength values.
- the ion exchange process can in particular directly follow the quenching process.
- very high strength values can be achieved in this way, in particular with regard to bending strength, microhardness and scratch resistance, which exceed the strength values of an untreated, otherwise identical flat glass pane many times over.
- the flat glass pane according to the invention has compressive stress down to a compressive stress depth and from the compressive stress depth a tensile stress, the tensile stress increasing with increasing depth up to a maximum tensile stress arranged in the inner layer and/or the course of the tensile stress being dependent has no linear section in depth and/or wherein the course of the tensile stress as a function of depth does not have a section in which the tensile stress is constant.
- the flat glass pane according to the invention differs very significantly, for example, from flat glass panes that have been treated with a known chemical toughening process.
- the flat glass pane according to the invention can advantageously be designed in particular in such a way that the surface layer has a thickness in the range from 0.5
- the stated thickness of the surface layer advantageously being able to be achieved comparatively quickly despite dispensing with expensive special glasses that are difficult to produce.
- the flat glass pane can advantageously be designed in particular in such a way that at least one surface layer is enriched in potassium and depleted in sodium, while an inner layer, in particular immediately adjacent to the surface layer, is not enriched in potassium and not depleted in sodium and/or lithium, or in such a way that at least one surface layer is enriched in potassium and depleted in sodium and/or lithium, while an inner layer, in particular immediately adjacent to the surface layer, is not enriched in potassium and not depleted in lithium.
- a flat glass pane which has two surface layers, in particular parallel to one another, is particularly robust. It can advantageously be provided that each of the two surface layers is enriched in potassium and depleted in sodium and/or lithium, while an inner layer arranged between the surface layers is not enriched in potassium and not depleted in sodium and/or lithium, and that the flat glass pane on both sides has a compressive stress down to a compressive stress depth and from the compressive stress depth a tensile stress, wherein the tensile stress increases with increasing depth up to a tensile stress maximum arranged in the inner layer and/or wherein the progression of the tensile stress as a function of the depth does not have a linear section and/ or wherein the plot of tensile stress versus depth has no portion where the tensile stress is constant. This can be achieved in particular by treating both outer sides of the flat glass pane blank in the same way.
- the flat glass pane can advantageously be designed in particular in such a way that each of the two surface layers is enriched in potassium and depleted in sodium, while an inner layer arranged between the surface layers is not in potassium is enriched and not depleted in sodium and/or lithium, or such that each of the two surface layers is potassium-enriched and sodium- and/or lithium-depleted, while an inner layer located between the surface layers is potassium-non-enriched and non-lithium-depleted.
- the maximum tensile stress is usually arranged centrally between the surface layers.
- the maximum tensile stress is arranged eccentrically between the surface layers. This can be achieved in particular by treating the surface layers differently during production, in particular during hardening.
- the flat glass pane can be designed in such a way that it has a particularly large stress gradient towards the side on which a high usage load is to be expected, while it can have a lower stress gradient on the side facing away from the expected force action.
- only a first of the two surface layers is enriched in potassium and depleted in sodium and/or lithium, while the other surface layer and an inner layer arranged between the surface layers are not enriched in potassium and not depleted in sodium and/or lithium, with the flat glass pane has compressive stress on both sides down to a compressive stress depth and from the compressive stress depth a tensile stress, and wherein the tensile stress increases with increasing depth up to a maximum tensile stress arranged in the inner layer and/or wherein the course of the tensile stress as a function of the depth does not have a linear section and/or wherein the profile of the tensile stress as a function of the depth has no section in which the tensile stress is constant.
- Such a flat glass pane can be achieved, for example, in that, after the production of the flat glass pane blank, only one side of the flat glass pane blank is further treated in the manner described above.
- the flat glass pane can advantageously have a thickness in the range from 0.03 mm to 22 mm, in particular in the range from 0.5 mm to 10 mm or from 0.5 mm in the range to 5 mm or in the range from 0.6 mm to 3 mm or in the range from 0.68 mm to 3 mm or from 0.68 mm or in the range from 1.5 mm to 3 mm or in the range from 2 mm to 3 mm.
- the wall can have a thickness of more than 1.5 mm. It has been shown that with thicknesses of this type, particularly good strength values can be achieved in comparison to the same but untreated flat glass panes.
- a flat glass pane according to the invention can have a significantly lower weight with the same strength, since a significantly smaller thickness and therefore less glass material is required. Less material is required to produce such a flat glass pane, which reduces the material costs. In addition, weight can be saved with the same strength.
- the flat glass pane according to the invention can in particular be designed in such a way that the strength, in particular a strength measured according to DIN EN 1288-5, of the flat glass pane is at least 1.5 times, in particular at least twice or at least three times or at least four times or at least five times higher than that Strength of the same flat glass pane, in particular a flat glass pane of the same thickness, the same shape and the same base material, which does not have the above-mentioned special features of the flat glass pane according to the invention.
- the flat glass pane according to the invention can be produced in particular in such a way that the surface layer (or the surface layers) has (have) an increased hardness compared to the inner layer and/or that the surface layer (or the surface layers) has a Martens hardness, in particular measured according to DIN EN ISO 14577-1 at a test force of 2N, in the range from 3,500 N/mm2 to 3,900 N/mm2, in particular in the range from 3,650 N/mm2 to 3,850 N/mm2 (have).
- the flat glass pane according to the invention can have such strength values, although no expensive special glasses are used as raw material and although no long process times for strengthening are to be accepted. Process times of less than one hour are usually sufficient to achieve the above-mentioned strength of the flat glass pane.
- the flat glass pane can advantageously be designed in such a way that the proportion of potassium in the surface layer is greater than the total proportion of sodium and lithium down to a depth in the range from 0.5 ⁇ m to 10 ⁇ m and that the proportion of potassium decreases a depth in the range of 0.5
- Such an embodiment advantageously has particularly high strength.
- the depletion of sodium and/or lithium in the potassium-enriched surface layer may be at least 50% (mass percent) down to a depth of at least a quarter of the thickness of the surface layer.
- the glass material from which the flat glass pane is made is advantageously an alkali-alkaline-earth silicate glass, in particular a soda-lime glass, or a borosilicate glass.
- alkali-alkaline-earth silicate glass in particular a soda-lime glass, or a borosilicate glass.
- These glasses, and whole in particular alkali-earth-alkaline silicate glass, have the particular advantage that they are available at low cost.
- Alkali-earth silicate glass has the added benefit of being easy to recycle. In particular, it is not a problem to dispose of such a flat glass pane according to the invention in a waste glass container.
- the glass material from which the flat glass pane is made can also be an aluminosilicate glass.
- the glass material is not an aluminosilicate glass because such glass is too complex and, in particular, too expensive to produce.
- the glass material preferably has an aluminum oxide content of less than 5% (percent by mass) (Al2O3 ⁇ 5%), in particular less than 4.5% (percent by mass) (Al2O3 ⁇ 4.5%).
- the glass material can advantageously have a silicon dioxide content (SiO2) of more than 58% (mass percent) and less than 85% (mass percent), in particular more than 70% (mass percent) and less than 74% (mass percent).
- SiO2 silicon dioxide content
- a glass material that is an alkali-earth-alkaline silicate glass can advantageously have a silicon dioxide content of more than 70% (percent by mass) and less than 74% (percent by mass).
- the glass material has an alkali oxide content, in particular sodium oxide content (Na2O) and/or lithium oxide content (U2O), in the range from 5% (mass percent) to 20% (mass percent), in particular in the range from 10% (mass percent ) to 14.5% (mass percent) or in the range from 12% (mass percent) to 13.5% (mass percent).
- an alkali oxide content in particular sodium oxide content (Na2O) and/or lithium oxide content (U2O)
- Na2O sodium oxide content
- U2O lithium oxide content
- the glass material can (alternatively or additionally) advantageously have a potassium oxide (K2O) content of at most 7% (mass percent), in particular at most 3% (mass percent) or at most 1% (mass percent).
- K2O potassium oxide
- the glass material can have a potassium oxide content in the range from 0.5% (mass percent) to 0.9% (mass percent).
- the glass material has a boron trioxide content (B2O3) of less than 15% (percent by mass), in particular of at most 5% (percent by mass).
- B2O3 boron trioxide content
- the flat glass pane can be, for example, a float glass pane or a rolled glass pane.
- the flat glass pane blank can also be produced, for example, by drawing from a glass melt.
- the flat glass pane according to the invention can be flat.
- flat glass can also be curved in one or two dimensions.
- a curved flat glass pane blank is first produced, which is then treated in the manner described above.
- the flat glass pane according to the invention can be designed or used as a window pane, for example.
- the lower weight with the same strength compared to a conventional window pane can be advantageously used, for example with regard to the dimensioning of the window fittings.
- the flat glass pane according to the invention can be designed, for example, as a display pane, in particular for a computer display or mobile phone display or tablet display or television display. Since the invention makes it possible to use inexpensive utility glasses, displays can be produced more cost-effectively as a result. Electronic devices, in particular computers or tablets or mobile phones, which have such a display are of particular advantage in this regard.
- the flat glass pane according to the invention can be designed, for example, as a motor vehicle pane, in particular as a front glass pane or as a sunroof pane or as a side pane.
- the flat glass pane according to the invention can advantageously be used as a solar glass pane, for example for covering thermal solar collectors or in photovoltaics. It is of particular advantage here that the flat glass pane according to the invention can be made thinner than flat glass panes of the same base material which do not have the above-mentioned special features of the flat glass pane according to the invention, which advantageously increases the light transmission.
- the flat glass pane according to the invention can advantageously be designed as a greenhouse pane.
- the beams of the greenhouse that support the flat glass panes according to the invention can advantageously be made weaker and therefore cheaper because the flat glass panes according to the invention can be made thinner and therefore lighter than conventional flat glass panes of the same base material with the same strength.
- the light transmission range can be increased by using narrower carriers.
- the flat glass pane according to the invention can be particularly advantageous, especially in the Manufacture of vehicles, in particular motor vehicles, are used; This is particularly because vehicles using the flat glass pane according to the invention can achieve a low weight in terms of energy consumption and driving characteristics and, in addition, a high level of safety due to the high strength of the flat glass pane.
- the flat glass pane can be, for example, a windshield or a rear window or a side window or a roof pane, in particular of a glass roof or a glass sliding roof or a glass tilting roof.
- FIG. 3 shows a first exemplary embodiment of a flat glass pane according to the invention
- FIG. 4 shows a second exemplary embodiment of a flat glass pane according to the invention.
- FIG. 1 shows a schematic representation, which is not true to scale, of a first component of the stress curve 1 within a flat glass pane according to the invention, which has a thickness 6 .
- the first component of stress curve 1 is based on the fact that a flat glass pane blank was first produced and heated to a primary temperature that is no more than 50 Kelvin below and no more than 30 Kelvin above the Littleton point of the glass material and then quenched to a quenching temperature which is at least 200 Kelvin and at most 550 Kelvin, in particular at least 200 Kelvin and at most 450 Kelvin, below the primary temperature.
- the compressive stress 3 increases to the right, starting from the zero line drawn in dashed lines, while the tensile stress 4 increases to the left, starting from the zero line drawn in dashed lines.
- the flat glass pane 7 has one on each side towards the inside decreasing compressive stress 3, which transitions into a tensile stress 4 increasing up to the middle between the outer sides, the course of the tensile stress as a function of depth not having a linear section and depending on depth not having a section in which the tensile stress 4 is constant .
- the first component has a maximum 5 of tensile stress 4.
- the strength of the flat glass pane 7 is increased by a second component of the stress profile 1 within the flat glass pane, as is shown schematically in FIG.
- Figure 2 shows a schematic representation, which is not true to scale, of a second component of the stress profile 1 within the flat glass pane, which is based on the fact that the two surface layers 10 are enriched in potassium and depleted in sodium and/or lithium, while those adjacent to the surface layers 10 are directly adjacent inner layer 11 is not enriched in potassium and not depleted in sodium and/or lithium. It can be seen that the stress profile 1 of the second component in the inner layer 11 is largely linear.
- the stress profile acting overall is determined jointly by the first component and the second component, so that the flat glass pane has compressive stress 3 on both sides down to a compressive stress depth 2 and tensile stress 4 from the compressive stress depth 2, with the tensile stress 4 increasing with depth up to a tensile stress maximum 5 arranged in the inner layer 11 and/or wherein the course of the tensile stress 4 as a function of the depth does not have a linear section and/or the course of the tensile stress 4 as a function of the depth does not have a section in which the tensile stress 4 is constant.
- FIG. 3 shows a cross-sectional view of a first exemplary embodiment of a flat glass pane 7 that is flat.
- Detailed view 9 of a section of flat glass pane 7 shows that flat glass pane 7 has a surface layer 10 on both sides that is enriched in potassium and depleted in sodium and/or lithium, while an inner layer 1 1 is not enriched in potassium and not depleted in sodium and/or lithium.
- the flat glass pane 7 has a stress profile 1 which results from the simultaneous action of the two components shown in FIGS.
- FIG. 4 shows a cross-sectional representation of a second exemplary embodiment of a flat glass pane 7 according to the invention, which is curved.
- the flat glass pane 7 has a surface layer 10 on one side that is enriched in potassium and depleted in sodium and/or lithium, while an inner layer 11, which in particular is directly adjacent to the surface layer 10, and the other surface layer 8 not enriched in potassium and not depleted in sodium and/or lithium.
- the flat glass pane 7 has an asymmetrical stress profile 1 based on two asymmetrical components, with the maximum tensile stress being arranged eccentrically between the outer sides of the flat glass pane 7 .
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- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237010175A KR20230059812A (ko) | 2020-09-03 | 2021-09-02 | 평판유리 |
CN202180070740.0A CN116348422A (zh) | 2020-09-03 | 2021-09-02 | 平面玻璃板 |
US18/024,355 US20230312389A1 (en) | 2020-09-03 | 2021-09-02 | Flat glass pane |
EP21770234.9A EP4208422A1 (de) | 2020-09-03 | 2021-09-02 | Flachglasscheibe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LULU102045 | 2020-09-03 | ||
LU102045A LU102045B1 (de) | 2020-09-03 | 2020-09-03 | Flachglasscheibe |
Publications (1)
Publication Number | Publication Date |
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WO2022049205A1 true WO2022049205A1 (de) | 2022-03-10 |
Family
ID=73040199
Family Applications (1)
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PCT/EP2021/074284 WO2022049205A1 (de) | 2020-09-03 | 2021-09-02 | Flachglasscheibe |
Country Status (7)
Country | Link |
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US (1) | US20230312389A1 (de) |
EP (1) | EP4208422A1 (de) |
KR (1) | KR20230059812A (de) |
CN (1) | CN116348422A (de) |
LU (1) | LU102045B1 (de) |
TW (1) | TW202214538A (de) |
WO (1) | WO2022049205A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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LU102044B1 (de) * | 2020-09-03 | 2022-03-03 | Univ Freiberg Tech Bergakademie | Glasbehälter |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3433611A (en) * | 1965-09-09 | 1969-03-18 | Ppg Industries Inc | Strengthening glass by multiple alkali ion exchange |
DD157966A3 (de) | 1977-08-08 | 1982-12-22 | Siegfried Schelinski | Verfahren und vorrichtungen zur verfestigung von glaserzeugnissen durch ionenaustauch |
DE112014003344T5 (de) | 2013-07-19 | 2016-03-31 | Asahi Glass Company, Limited | Chemisch Gehärtetes Glas |
US20190016627A1 (en) * | 2017-07-13 | 2019-01-17 | Corning Incorporated | Glass-based articles with improved stress profiles |
US20200002225A1 (en) * | 2018-07-02 | 2020-01-02 | Corning Incorporated | Glass-based articles with improved stress profiles |
WO2020205304A1 (en) * | 2019-03-29 | 2020-10-08 | Corning Incorporated | Scratch resistant glass and method of making |
-
2020
- 2020-09-03 LU LU102045A patent/LU102045B1/de active IP Right Grant
-
2021
- 2021-09-02 KR KR1020237010175A patent/KR20230059812A/ko active Search and Examination
- 2021-09-02 EP EP21770234.9A patent/EP4208422A1/de active Pending
- 2021-09-02 WO PCT/EP2021/074284 patent/WO2022049205A1/de active Application Filing
- 2021-09-02 TW TW110132607A patent/TW202214538A/zh unknown
- 2021-09-02 US US18/024,355 patent/US20230312389A1/en active Pending
- 2021-09-02 CN CN202180070740.0A patent/CN116348422A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3433611A (en) * | 1965-09-09 | 1969-03-18 | Ppg Industries Inc | Strengthening glass by multiple alkali ion exchange |
DD157966A3 (de) | 1977-08-08 | 1982-12-22 | Siegfried Schelinski | Verfahren und vorrichtungen zur verfestigung von glaserzeugnissen durch ionenaustauch |
DE112014003344T5 (de) | 2013-07-19 | 2016-03-31 | Asahi Glass Company, Limited | Chemisch Gehärtetes Glas |
US20190016627A1 (en) * | 2017-07-13 | 2019-01-17 | Corning Incorporated | Glass-based articles with improved stress profiles |
US20200002225A1 (en) * | 2018-07-02 | 2020-01-02 | Corning Incorporated | Glass-based articles with improved stress profiles |
WO2020205304A1 (en) * | 2019-03-29 | 2020-10-08 | Corning Incorporated | Scratch resistant glass and method of making |
Also Published As
Publication number | Publication date |
---|---|
KR20230059812A (ko) | 2023-05-03 |
CN116348422A (zh) | 2023-06-27 |
TW202214538A (zh) | 2022-04-16 |
EP4208422A1 (de) | 2023-07-12 |
US20230312389A1 (en) | 2023-10-05 |
LU102045B1 (de) | 2022-03-03 |
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