CN112679101A - Glass with different thicknesses and processing technology thereof - Google Patents
Glass with different thicknesses and processing technology thereof Download PDFInfo
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- CN112679101A CN112679101A CN202011565144.3A CN202011565144A CN112679101A CN 112679101 A CN112679101 A CN 112679101A CN 202011565144 A CN202011565144 A CN 202011565144A CN 112679101 A CN112679101 A CN 112679101A
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Abstract
The invention provides glass with different thicknesses and a processing technology thereof, wherein the glass is flat glass with a strip-shaped groove on one surface, and the distance from the bottom of the groove to the surface far away from the groove is less than 0.1 mm. According to the glass with different thicknesses and the processing technology thereof, the strip-shaped groove is formed in the middle of the plate glass, and the thickness of the thinnest part of the plate glass is enabled to be less than 0.1mm by the strip-shaped groove, so that the glass can be used as a folding groove, and the defect that the plate glass cannot be effectively folded is overcome; and the processing technology overcomes the defect that the existing ultra-thin glass production is difficult to realize the mass production.
Description
Technical Field
The invention relates to the technical field of glass processing and forming, in particular to glass with different thicknesses and a processing technology thereof.
Background
At present, a display screen of a folding screen mobile phone is made of a flexible polymer material, and a main screen and an auxiliary screen of the mobile phone are connected by a hinge. Although the flexible polymer material has the advantages of easy folding and the like, the defects are also obvious: the mobile phone screen has low hardness, when a metal object or a hard object is contacted with the mobile phone screen, scratches are easily left on the mobile phone screen, and the flexible polymer material is easy to generate wrinkles, so that the definition of the mobile phone screen is reduced, and the service life of the mobile phone is influenced. The impact strength of the flexible polymer material is low, the folding screen mobile phone can be damaged if the folding screen mobile phone drops from the hand of a user carelessly, the user needs to use a mobile phone cover or needs to pay special protection to avoid the defects of scratching of the mobile phone screen and the like, and more inconvenience is brought to the user.
To solve the problems of folding and low hardness of flexible polymer cover plates for screens, the cell phone industry introduced the concept of foldable ultra-thin glass (UTG). When the foldable ultra-thin glass (UTG) is used for folding the cover plate of the mobile phone, the problem of corrugation generated in the folding area of the traditional cover plate material CPI cover plate film and the problem of film deformation generated when repeated folding are effectively solved.
However, in practical applications, the conventional ultra-thin glass cannot be folded effectively, and for the production of the ultra-thin glass itself, the conventional process directly etches and thins the thick glass to below 0.1mm, and then performs cutting, grinding and polishing, so that the process has high defect rate and poor mass productivity.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the glass with different thicknesses and the processing technology thereof, the strip-shaped groove is formed in the middle of the plate glass, and the strip-shaped groove enables the thickness of the thinnest part of the plate glass to be less than 0.1mm, so that the glass can be used as a folding groove, and the defect that the plate glass cannot be effectively folded is overcome; and the processing technology overcomes the defect that the existing ultra-thin glass production is difficult to realize the mass production.
The invention provides glass with different thicknesses, which is flat glass with a strip-shaped groove on one surface, wherein the distance from the bottom of the groove to the surface far away from the groove is less than 0.1 mm.
Preferably, the distance from the bottom of the groove to the side away from the groove is 0.03 + -0.005 mm.
Preferably, the edge of the groove is in smooth transition with the plate glass.
Preferably, the groove is trapezoid-like.
The invention provides a processing technology of glass with different thicknesses, which comprises the following steps:
processing one surface of the plate glass by a CNC (computerized numerical control) process to form strip-shaped depressions on one surface of the plate glass;
and adhering one surface of the plate glass with the recess with the first substrate, and processing the other surface of the plate glass by a chemical thinning process to thin the whole thickness of the plate glass until the required glass thickness is reached to obtain the plate glass with one surface provided with the strip-shaped groove, namely the plate glass with different thicknesses.
Preferably, the distance from the bottom of the recess to the surface far away from the groove is 0.2 +/-0.01 mm.
Preferably, before the adhering the side of the flat glass with the recess to the first substrate, polishing the flat glass;
preferably, the polishing specifically comprises: firstly, adhering one surface of the flat glass without the depression to a second substrate, then sequentially using a brush and a woolen blanket to perform 2.5D light scanning on the depression, and then performing degumming separation;
preferably, the second substrate has a size larger than that of the plate glass.
Preferably, the chemical thinning process is specifically an etching process;
preferably, the first substrate has the same size as the flat glass.
Preferably, the distance from the bottom of the groove to the side facing away from the groove is less than 0.1mm, preferably 0.03 ± 0.005 mm.
Preferably, after the other side of the flat glass is processed by the chemical thinning process, the post-treatment of the flat glass is further included;
preferably, the post-treatment specifically comprises: the flat glass bonded with the first substrate is bonded into a whole layer by layer, the whole is ground and processed by a CNC (computer numerical control) process, then edge chamfering is carried out, and then glue dissolving separation, frame insertion, cleaning and tempering are carried out in sequence.
Preferably, the first substrate is adhered to the surface of the flat glass at the outermost layer of the whole body.
According to the invention, the plate glass is firstly processed through a CNC (computerized numerical control) process, so that one surface of the plate glass forms a strip-shaped recess, and then the other surface of the plate glass, which is far away from the recess, is chemically thinned, so that the thickness of the thinnest part of the plate glass reaches the design requirement, for example, the thickness of the thinnest part of the plate glass can reach 0.03 mm. Therefore, the flat glass meets the folding requirements and has the free bending characteristic of being capable of being folded more than 150 thousands times.
Compared with the two prior processes of directly cutting the groove on the plate glass to enable the thickness of the thinnest part of the plate glass to be less than 0.1mm, or directly etching and thinning the thick glass to be less than 0.1mm, and then cutting, grinding and polishing, the invention also cuts the groove on the plate glass, but the thickness of the thinnest part of the plate glass is only required to be 0.2mm, so the processing difficulty is lower, the accuracy is higher, and the defects of high reject ratio and incapability of mass production caused by one-time cutting and processing molding are avoided; the required thickness is controlled by a chemical thinning method, so that the defect of high reject ratio caused by polishing after ultra-thin glass is formed by chemical thinning can be avoided, the processing thickness and the shape of the plate glass are easy to control, and the accurate and thin glass is manufactured, thereby realizing effective folding and mass production.
In conclusion, the variable-thickness glass process has the advantages of being capable of realizing mass production, accurate in thickness tolerance control, not prone to being broken, not prone to being scratched and the like.
Drawings
FIG. 1 is a side view of the structure of the product obtained in step (1) of the embodiment of the present invention;
FIG. 2 is a side view of the structure of the product obtained in step (2) of the example of the present invention;
FIG. 3 is a side view of the structure of the product obtained in step (3) of the embodiment of the present invention;
FIG. 4 is a side view of the structure of the product obtained in step (4) of the embodiment of the present invention;
FIG. 5 is a side view of the structure of the product obtained in step (5) of the example of the present invention.
Detailed Description
Hereinafter, the technical solution of the present invention will be described in detail by specific examples, but these examples should be explicitly proposed for illustration, but should not be construed as limiting the scope of the present invention.
The glass with different thicknesses is flat glass with a strip-shaped groove on one surface, and the distance from the bottom of the groove to the surface far away from the groove is less than 0.1 mm. Referring to fig. 5, the stripe-shaped groove of the present invention has a trapezoid-like shape, but is not limited to these shapes.
Examples
The unequal-thickness glass is essentially plate glass with a strip-shaped groove on one surface, and the distance from the bottom of the groove to the surface far away from the groove is less than 0.1mm, and the processing technology comprises the following steps:
(1) selecting a plate glass 1 with the thickness of 0.55mm, processing the plate glass 1 by adopting a CNC engraving and milling machine, processing a strip-shaped recess 2 on one surface of the plate glass 1, wherein the thickness H1 of the strip-shaped recess 2 is 0.2mm, and controlling the thickness deviation to be +/-0.01 mm;
(2) coating UV (ultraviolet) adhesive on one surface, which is not provided with the recess 2, of the flat glass 1 in the product obtained in the step (1), then attaching and fixing the flat glass on a protective substrate 3, wherein the size of the protective substrate 3 is 5mm larger than that of the flat glass 1, then performing 2.5D mode light scanning by using a hairbrush, and further performing 2.5D mode light scanning by using a wool blanket to finish polishing;
(3) carrying out degumming separation on the product obtained in the step (2), and then grinding and removing the edge collapse area on the upper edge of the plate glass 1 by using a CNC engraving and milling machine; coating UV (ultraviolet) adhesive on one surface of the flat glass 1 with the recess 2, and then attaching and fixing the flat glass on the protective substrate 4, wherein the size of the protective substrate 4 is the same as that of the flat glass 1, so that one surface of the flat glass 1 with the recess is protected; etching the surface of the plate glass 1, which is not adhered with the protective substrate 4, so that the plate glass 1 is integrally thinned until the thickness H2 of the strip-shaped recess 2 is 0.03mm, and controlling the thickness deviation to be +/-0.005 mm;
(4) coating UV viscose glue on the surfaces of the products obtained in the five steps (3), adhering the products into a whole layer by layer, adhering a protective substrate 4 on the surface of the plate glass on the outermost layer of the whole body, grinding the products by using a CNC engraving and milling machine, and then transferring the products to UTG glass chamfering tools for chamfering;
(5) and (4) performing dispergation and separation on the product obtained in the step (4), sequentially inserting frames, cleaning and tempering to obtain the glass with different thicknesses.
According to the process, the plate glass with the strip-shaped groove on one surface is obtained, the thickness of the thinnest part of the plate glass reaches 0.03mm, so that the plate glass can be effectively folded, and the whole production process has the advantages of being capable of being produced in a large scale, accurate in thickness tolerance control, not prone to being broken, not prone to being scratched and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The glass with different thicknesses is characterized in that the glass is flat glass with a strip-shaped groove on one surface, and the distance from the bottom of the groove to the surface far away from the groove is less than 0.1 mm.
2. The non-uniform thickness glass according to claim 1, wherein the distance from the bottom of the groove to the side away from the groove is 0.03 ± 0.005 mm.
3. The non-uniform thickness glass according to claim 1 or 2, wherein the groove edge is in smooth transition with the flat glass.
4. The non-uniform thickness glass according to any one of claims 1 to 3, wherein the grooves have a trapezoidal-like shape.
5. A processing technology of glass with different thicknesses is characterized by comprising the following steps:
processing one surface of the plate glass by a CNC (computerized numerical control) process to form strip-shaped depressions on one surface of the plate glass;
and adhering one surface of the plate glass with the recess with the first substrate, and processing the other surface of the plate glass by a chemical thinning process to thin the whole thickness of the plate glass until the required glass thickness is reached to obtain the plate glass with one surface provided with the strip-shaped groove, namely the plate glass with different thicknesses.
6. The process of claim 5, wherein the distance from the bottom of the recess to the surface away from the groove is 0.2mm ± 0.01 mm.
7. The process for manufacturing a variable thickness glass as claimed in claim 5 or 6, further comprising polishing the plate glass before bonding the side of the plate glass having the recess to the first substrate;
preferably, the polishing specifically comprises: firstly, adhering one surface of the flat glass without the depression to a second substrate, then sequentially using a brush and a woolen blanket to perform 2.5D light scanning on the depression, and then performing degumming separation;
preferably, the second substrate has a size larger than that of the plate glass.
8. The process for processing the variable-thickness glass according to any one of claims 5 to 7, wherein the chemical thinning process is an etching process;
preferably, the first substrate has the same size as the flat glass.
9. The process for processing variable thickness glass according to any one of claims 5 to 8, wherein the distance from the bottom of the groove to the side away from the groove is less than 0.1mm, preferably 0.03 ± 0.005 mm.
10. The process for processing the variable-thickness glass according to any one of claims 5 to 9, wherein after the other surface of the plate glass is processed by the chemical thinning process, the process further comprises post-treating the plate glass;
preferably, the post-treatment specifically comprises: bonding the flat glass layer bonded with the first substrate into a whole layer by layer, grinding the whole by a CNC (computer numerical control) process, chamfering, sequentially performing degumming separation, frame insertion, cleaning and tempering;
preferably, the first substrate is adhered to the surface of the flat glass at the outermost layer of the whole body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011565144.3A CN112679101B (en) | 2020-12-25 | 2020-12-25 | Glass with different thicknesses and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011565144.3A CN112679101B (en) | 2020-12-25 | 2020-12-25 | Glass with different thicknesses and processing technology thereof |
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| CN112679101A true CN112679101A (en) | 2021-04-20 |
| CN112679101B CN112679101B (en) | 2022-12-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114850975A (en) * | 2022-05-13 | 2022-08-05 | 万津实业(赤壁)有限公司 | Preparation method of glass cover plate with different thicknesses |
| CN115073020A (en) * | 2022-06-22 | 2022-09-20 | 芜湖东信光电科技有限公司 | Chemical tempering method for ultrathin foldable non-equal-thickness glass and ultrathin foldable non-equal-thickness tempered glass |
| WO2023205026A1 (en) * | 2022-04-20 | 2023-10-26 | Corning Incorporated | Thermal management of variable thickness glass ribbon |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023205026A1 (en) * | 2022-04-20 | 2023-10-26 | Corning Incorporated | Thermal management of variable thickness glass ribbon |
| CN114850975A (en) * | 2022-05-13 | 2022-08-05 | 万津实业(赤壁)有限公司 | Preparation method of glass cover plate with different thicknesses |
| CN115073020A (en) * | 2022-06-22 | 2022-09-20 | 芜湖东信光电科技有限公司 | Chemical tempering method for ultrathin foldable non-equal-thickness glass and ultrathin foldable non-equal-thickness tempered glass |
| CN115073020B (en) * | 2022-06-22 | 2023-12-26 | 芜湖东信光电科技有限公司 | Chemical tempering method of ultrathin foldable non-uniform thickness glass and ultrathin foldable non-uniform thickness tempered glass |
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| CN112679101B (en) | 2022-12-16 |
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