Grooved ultra-thin glass and processing method thereof

Abstract

The application provides a kind of grooving ultra-thin glass and its processing method, the ultra-thin glass includes thinning area and non-thinning area, the thinning area includes folding area, and transition area symmetrically arranged at both ends of the folding area, the transition area and the folding area are smoothly connected, both ends of the transition area are smoothly connected non-thinning area;The processing method includes attaching acid-resistant film on one side surface of ultra-thin glass to obtain glass sample, freezing both ends of the glass sample respectively, and then completing the grooving of ultra-thin glass through etching process and cleaning process.In the application, the processing method of ultra-thin glass grooving is provided, which is cooperated by freezing, etching process and cleaning process, and the specific steps of each operation are controlled, which greatly increases the impact resistance of ultra-thin glass, and the transition area of ultra-thin glass after grooving is very smooth, the overall operation is simple, the cost is low, the grooving effect is good, and it is suitable for popularization and use.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glass slotting method, and relates to a slotted ultra-thin glass and a processing method thereof. BACKGROUND

[0002] The glass cover plate of a smart phone needs to go through a slotting process in the production process, and the process is completed by a glass engraving machine. The glass engraving machine is a kind of numerical control machine tool, also known as a glass carving machine, a glass drilling machine, a glass edge grinding machine, a special-shaped glass cutting machine, a glass slotting machine or a precision glass forming machine. The glass engraving machine is mainly applied to fine processing and special-shaped cutting of various ultra-thin glasses, and the technology is very mature. Due to the development demand of the future electronic consumer market, more digital electronic display screens use glass as display screens or touch screens, and the market of the glass engraving machine is becoming larger and larger.

[0003] CN215319697U discloses a glass cover plate slotting device, and belongs to the technical field of mobile phone cover plate processing, comprising a device shell, a debris drawer is arranged below the device shell, a handle is installed on the debris drawer, a plurality of glass cover plates are arranged in the device shell, a clamping device is arranged below the glass cover plates, a side plate is connected to one side of the device shell, an electric drill support plate is arranged on the top of the side plate, and an electric drill is installed below the electric drill support plate. The utility model discloses a plurality of clamping devices and a plurality of electric drills, which can conveniently slot a plurality of glass cover plates at a time, improve work efficiency, and conveniently collect debris generated in the slotting process, so that the debris is easy to clean.

[0004] CN111453984A discloses a structure for improving the bendability of an ultra-thin glass mobile phone cover plate, which is made by a method for improving the bendability of an ultra-thin glass mobile phone cover plate. The structure for improving the bendability of the ultra-thin glass mobile phone cover plate comprises an ultra-thin glass mobile phone cover plate, and recessed areas are arranged on the bending shaft position and / or the lower surface of the ultra-thin glass mobile phone cover plate. The recessed areas are arc-shaped grooves. The manufacturing method of the application only thins the glass near the bending shaft, saves the amount of hydrofluoric acid thinning agent / leveling agent, saves material cost and environmental protection treatment cost, and because a relatively thick ultra-thin glass is used, the strength is better, and the yield rate is high during the production and manufacturing process of the mobile phone cover plate.

[0005] However, the existing glass cover plate slotting device needs to slot the glass cover plate one by one, which is too low in efficiency and requires a large amount of labor from workers. Debris generated during slotting is troublesome to clean, and long-term accumulation in the equipment can damage the equipment, reduce the service life of the equipment, and there is no good method for slotting ultra-thin glass without damaging the surface. Therefore, it is urgent to design and develop a slotted ultra-thin glass and a processing method thereof to meet the needs of actual production and life. SUMMARY

[0006] In view of the deficiencies of the prior art, the purpose of the present application is to provide a slotted ultra-thin glass and a processing method thereof. In the present application, the processing method for slotted ultra-thin glass is provided, which is cooperated by freezing, etching process and cleaning process, and the specific steps of each operation are controlled, so that the impact resistance of the ultra-thin glass is greatly increased, and the transition zone of the ultra-thin glass after slotted forming is very smooth, the overall operation is simple, the cost is low, the slotted effect is good, and it is suitable for popularization and use.

[0007] To achieve this purpose, the present application adopts the following technical solutions:

[0008] In the first aspect, the present application provides a processing method for etching and slotted ultra-thin glass, which comprises:

[0009] An acid-resistant film is attached to one side surface of the ultra-thin glass to obtain a glass sample, and the two ends of the glass sample are frozen respectively, and then the etching process and the cleaning process are completed to form the slotted ultra-thin glass.

[0010] In the present application, the processing method for slotted ultra-thin glass is provided, which is cooperated by freezing, etching process and cleaning process, and the specific steps of each operation are controlled, so that the impact resistance of the ultra-thin glass is greatly increased, and the transition zone of the ultra-thin glass after slotted forming is very smooth, the overall operation is simple, the cost is low, the slotted effect is good, and it is suitable for popularization and use.

[0011] It should be noted that in the present application, ≤10 pieces of ultra-thin glass attached to the backing plate can be loaded into the etching tool at one time, the production efficiency is improved, and the soaking type thinning device is used, so that each piece of ultra-thin glass has the same thinning effect, and the production stability is improved.

[0012] It should be noted that the acid-resistant film in the present application refers to any one of PVC film, PP film or PET film, and one side surface of the PVC film, PP film or PET film is coated with glue to adhere to the glass sample.

[0013] As a preferred technical solution of the present application, the area of the acid-resistant film is greater than the area of the ultra-thin glass.

[0014] As a preferred technical solution of the present application, the freezing specifically comprises:

[0015] The glass sample is placed in the jig and frozen until one end of the glass sample is completely frozen, and the other end of the glass sample is placed in the jig and frozen to obtain a frozen glass sample.

[0016] Specifically, the two ends of the glass sample are respectively placed in a freezing jig containing pure water, and the glass sample in the freezing jig is frozen as a whole until the pure water in the freezing jig is frozen into ice blocks, thereby obtaining a frozen glass sample.

[0017] As a preferred technical solution of the present application, the freezing temperature is-5 to-7℃, for example, it can be-5℃, -5.2℃, -5.4℃, -5.6℃, -5.8℃, -6℃, -6.2℃, -6.4℃, -6.6℃, -6.8℃, -7℃, but not limited to the listed values, other values not listed in this range are also applicable.

[0018] As a preferred technical solution of the present application, the etching process specifically includes:

[0019] The two ends of the frozen glass sample are fixed on the backing plate by a clamp, and a chemical thinning process is carried out in a soaking etching machine.

[0020] As a preferred technical solution of the present application, the time of the chemical thinning process is 5 to 30 minutes, for example, it can be 5 minutes, 8 minutes, 10 minutes, 13 minutes, 15 minutes, 17 minutes, 20 minutes, 22 minutes, 25 minutes, 28 minutes, 30 minutes, but not limited to the listed values, other values not listed in this range are also applicable.

[0021] The present application limits the time of the chemical thinning process to 5 to 30 minutes, and the width of the transition zone to 10 to 50 mm, because within this size range, the thinning zone and the non-thinning area are smoothly transitioned, if not within this range, such as too long thinning time, the ice block melting amount increases, which will cause the transition zone width to be wider, or the ice block to be completely melted, causing the product to be thinned as a whole; too short thinning time will cause the transition to be not smooth, with a step feeling.

[0022] Preferably, the soaking etching machine contains an etching solution.

[0023] Preferably, the etching solution includes hydrofluoric acid.

[0024] Preferably, the etching solution further includes sulfuric acid and / or hydrochloric acid.

[0025] It should be noted that the etching solution must contain hydrofluoric acid, without hydrofluoric acid, the glass cannot be thinned, and the concentrations of sulfuric acid and hydrochloric acid can be arbitrarily adjusted, but hydrochloric acid and sulfuric acid cannot be used alone for etching.

[0026] Preferably, the concentration of the hydrofluoric acid is ≤ 15%, for example it can be 15%, 14%, 13%, 12%, 11%, 10%, 9%, 8%, 7%, 6%, 5%, 4%, but not limited to the listed values, other values not listed in the range of values are also applicable.

[0027] Preferably, the concentration of the sulfuric acid is 10-12%, for example it can be 10%, 10.2%, 10.4%, 10.6%, 10.8%, 11%, 11.2%, 11.4%, 11.6%, 11.8%, 12%, but not limited to the listed values, other values not listed in the range of values are also applicable.

[0028] Preferably, the concentration of the hydrochloric acid is ≤ 5%, for example it can be 5%, 4%, 3%, 2%, 1%, but not limited to the listed values, other values not listed in the range of values are also applicable.

[0029] Preferably, the temperature of the chemical thinning process is 5-15℃, for example it can be 5℃, 6℃, 7℃, 8℃, 9℃, 10℃, 11℃, 12℃, 13℃, 14℃, 15℃, but not limited to the listed values, other values not listed in the range of values are also applicable.

[0030] In a second aspect, the present application provides a slotted ultra-thin glass, which is processed by the processing method of the first aspect, and comprises a thinning region and a non-thinning region, the thinning region comprises a folding region and a transition region symmetrically arranged at both ends of the folding region, the transition region and the folding region are smoothly connected, and both ends of the transition region are smoothly connected to the non-thinning region.

[0031] It should be noted that the transition region, the folding region and the non-thinning region of the slotted ultra-thin glass in the present application are smoothly connected, which can effectively reduce the distortion phenomenon of the glass after slotted strengthening.

[0032] As a preferred technical solution of the present application, the width of the folding region is 10-50mm, for example it can be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, but not limited to the listed values, other values not listed in the range of values are also applicable.

[0033] As a preferred technical solution of the present application, the width of the transition region is 10-50mm, for example it can be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, but not limited to the listed values, other values not listed in the range of values are also applicable.

[0034] The width of the folding area is 10-50mm, and the width of the transition area is 10-50mm, because within this size range, the thinning area and the non-thinning area are smoothly transitioned, if not within this range, such as too long thinning time, the ice block melting amount increases, which will cause the transition area to be wider, or the ice block to be completely melted, causing the product to be thinned as a whole; too short thinning time will cause the transition to be not smooth, with a step feeling.

[0035] As a preferred technical solution of the present application, the thickness of the non-thinning area is 50-200μm, for example, it can be 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 120μm, 140μm, 160μm, 180μm, 200μm, but not limited to the listed values, other values not listed within this range are also applicable.

[0036] Preferably, the height difference between the upper surface of the folding area and the upper surface of the non-thinning area is 20-150μm, for example, it can be 20μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 100μm, 110μm, 130μm, 150μm, but not limited to the listed values, other values not listed within this range are also applicable.

[0037] The thickness of the non-thinning area is 50-200μm, and the height difference between the upper surface of the folding area and the upper surface of the non-thinning area is 20-150μm, because within this size range, the thickness of the non-thinning area is always greater than the thickness of the folding area, the folding area can meet the bending function, and the thicker thickness of the non-thinning area can improve the impact strength of the product.

[0038] Compared with the prior art, the present application has the following advantages:

[0039] In the present application, the processing method of the ultra-thin glass slotting is provided by the mutual operation and cooperation of the freezing, etching process and cleaning process, and the specific steps of each operation are controlled, which greatly increases the impact resistance of the ultra-thin glass, and the transition area of the ultra-thin glass after slotting is very smooth, the overall operation is simple, the cost is low, the slotting effect is good, and it is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 The structure diagram of the slotting ultra-thin glass is provided for a specific embodiment of the present application;

[0041] Figure 2 The structure diagram of the glass sample is provided for a specific embodiment of the present application;

[0042] Figure 3A process diagram of freezing of the glass sample provided for one embodiment of the present application;

[0043] Figure 4 A structural schematic diagram of the glass sample provided for one embodiment of the present application after being frozen and placed on a backing plate;

[0044] Figure 5 A process diagram of etching of the glass sample provided for one embodiment of the present application;

[0045] Wherein, 1-ultra-thin glass; 2-acid-resistant film; 3-jig; 4-backing plate; 5-clamp; 6- immersion etching machine; 7-folding area; 8-transition area; 9-non-thinning area. DETAILED DESCRIPTION

[0046] It should be understood that, in the description of the present application, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0047] It should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] It should be understood by those skilled in the art that the present application necessarily includes necessary pipelines, conventional valves and general pump equipment for realizing the complete process, but the above content does not belong to the main point of the present application, and those skilled in the art can add layout by themselves based on the process flow and equipment structure selection, and the present application does not make special requirements and specific limitations on this.

[0049] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0050] In one embodiment, the present application provides a processing method for etching slotting of ultra-thin glass 1, the process is as shown in Figures 2 to 5 The processing method comprises the following steps:

[0051] Attaching acid-resistant film 2 on one side surface of the ultra-thin glass 1 to obtain a glass sample, freezing both ends of the glass sample, and then completing the slotting of the ultra-thin glass 1 through etching process and cleaning process.

[0052] In the present application, the processing method for slotting of the ultra-thin glass 1 is provided, which is cooperated by freezing, etching process and cleaning process, and the specific steps of each operation are controlled, so that the impact resistance of the ultra-thin glass 1 is greatly increased, the transition zone 8 of the ultra-thin glass 1 is very smooth after slotting, the overall operation is simple, the cost is low, the slotting effect is good, and the processing method is suitable for popularization and use.

[0053] It should be noted that in the present application, ≤10 large pieces of the backing plate 4 with the ultra-thin glass 1 can be loaded into the etching tool at one time, the production efficiency is improved, and the soaking type thinning device is used, so that the same thinning effect of each piece of the ultra-thin glass 1 can be ensured, and the production stability is improved.

[0054] Further, the area of the acid-resistant film 2 is larger than the area of the ultra-thin glass 1.

[0055] The freezing specifically comprises: placing the glass sample in the jig 3 to freeze until one end of the glass sample is completely frozen, and placing the other end of the glass sample in the jig 3 to freeze to obtain a frozen glass sample, and the freezing temperature is -5 to -7℃.

[0056] The etching process specifically comprises: fixing both ends of the frozen glass sample on the backing plate 4 through the clamp 5, and performing chemical thinning process in the soaking etching machine 6, the time of the chemical thinning process is 5 to 30 min, the soaking etching machine 6 contains etching liquid, the etching liquid comprises hydrofluoric acid, the etching liquid further comprises sulfuric acid and / or hydrochloric acid, the concentration of the hydrofluoric acid is ≤15%, the concentration of the sulfuric acid is 10 to 12%, and the concentration of the hydrochloric acid is ≤5%; further, the temperature of the chemical thinning process is 5 to 15℃.

[0057] In another embodiment, the present application provides a slotting ultra-thin glass, as shown in Figure 1 The slotting ultra-thin glass is processed by the processing method described in one embodiment, and the slotting ultra-thin glass comprises a thinning zone and a non-thinning zone 9, the thinning zone comprises a folding zone 7, and the transition zone 8 symmetrically arranged at both ends of the folding zone 7, the transition zone 8 and the folding zone 7 are smoothly connected, and both ends of the transition zone 8 are smoothly connected with the non-thinning zone 9.

[0058] It should be noted that the transition zone 8, the folding zone 7 and the non-thinning zone 9 of the slotted ultra-thin glass in the present application are smoothly transitioned, which can effectively reduce the distortion phenomenon of the glass after slotted strengthening.

[0059] Further, the width of the folding zone 7 is 10-50mm, the width of the transition zone 8 is 10-50mm, the thickness of the non-thinning zone 9 is 50-200μm, and the height difference between the upper surface of the folding zone 7 and the upper surface of the non-thinning zone 9 is 20-150μm.

[0060] Example 1

[0061] The embodiment provides a processing method for etching and slotting of an ultra-thin glass 1, wherein:

[0062] An acid-resistant film 2 is attached to one side surface of the ultra-thin glass 1 to obtain a glass sample, both ends of the glass sample are frozen respectively, and then etching and slotting of the ultra-thin glass 1 are completed through an etching process and a cleaning process.

[0063] Further, the area of the acid-resistant film 2 is greater than that of the ultra-thin glass 1.

[0064] The freezing specifically comprises: placing the glass sample in a jig 3 to freeze until one end of the glass sample is completely frozen, and then placing the other end of the glass sample in the jig 3 to freeze to obtain a frozen glass sample, and the freezing temperature is-5℃.

[0065] The etching process specifically comprises: fixing both ends of the frozen glass sample on a backing plate 4 through a clamp 5, and performing a chemical thinning process in a soaking etching machine 6, the time of the chemical thinning process is 5min, the soaking etching machine 6 contains an etching liquid, the etching liquid is hydrofluoric acid, the concentration of the hydrofluoric acid is 15%, and further, the temperature of the chemical thinning process is 10℃.

[0066] Example 2

[0067] The embodiment provides a processing method for etching and slotting of an ultra-thin glass 1, wherein:

[0068] An acid-resistant film 2 is attached to one side surface of the ultra-thin glass 1 to obtain a glass sample, both ends of the glass sample are frozen respectively, and then etching and slotting of the ultra-thin glass 1 are completed through an etching process and a cleaning process.

[0069] Further, the area of the acid-resistant film 2 is greater than that of the ultra-thin glass 1.

[0070] The freezing specifically comprises: placing the glass sample in a jig 3 to freeze until one end of the glass sample is completely frozen, and then placing the other end of the glass sample in the jig 3 to freeze to obtain a frozen glass sample, and the freezing temperature is-5℃.

[0071] The etching process specifically includes: fixing both ends of the frozen glass sample on the backing plate 4 through the clamp 5, performing a chemical thinning process in the immersion etching machine 6, the time of the chemical thinning process is 10 min, the immersion etching machine 6 contains an etching solution, the etching solution is hydrofluoric acid, the concentration of the hydrofluoric acid is 10%, further, the temperature of the chemical thinning process is 15℃.

[0072] Example 3

[0073] The embodiment provides a processing method for etching and slotting of ultra-thin glass 1, and the method specifically includes:

[0074] An acid-resistant film 2 is attached to one side surface of the ultra-thin glass 1 to obtain a glass sample, both ends of the glass sample are frozen, and then etching and cleaning processes are performed to complete the slotting of the ultra-thin glass 1.

[0075] Further, the area of the acid-resistant film 2 is greater than the area of the ultra-thin glass 1.

[0076] The freezing specifically includes: placing the glass sample in the jig 3 to freeze until one end of the glass sample is completely frozen, and then placing the other end of the glass sample in the jig 3 to freeze to obtain a frozen glass sample, and the freezing temperature is-7℃.

[0077] The etching process specifically includes: fixing both ends of the frozen glass sample on the backing plate 4 through the clamp 5, performing a chemical thinning process in the immersion etching machine 6, the time of the chemical thinning process is 20 min, the immersion etching machine 6 contains an etching solution, the etching solution is hydrofluoric acid, the concentration of the hydrofluoric acid is 5%, further, the temperature of the chemical thinning process is 12℃.

[0078] The above merely describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and those skilled in the art should understand that any changes or replacements within the technical scope disclosed by the present application can be easily conceived by those skilled in the art, and all these changes or replacements fall within the protection scope and disclosure scope of the present application.

Claims

1. A method for etching grooves in ultrathin glass, characterized in that, The processing method includes: An acid-resistant film (2) is attached to one side of the ultrathin glass to obtain a glass sample. The two ends of the glass sample are frozen respectively, and then the grooving of the ultrathin glass is completed through etching and cleaning processes. The freezing process specifically includes: placing the glass sample in a fixture (3) and freezing it until one end of the glass sample is completely frozen, and then placing the other end of the glass sample in the fixture (3) and freezing it to obtain a frozen glass sample.

2. The processing method according to claim 1, characterized in that, The area of ​​the acid-resistant film (2) is larger than the area of ​​the ultra-thin glass.

3. The processing method according to claim 1, characterized in that, The freezing temperature is -5 to -7°C.

4. The processing method according to claim 1, characterized in that, The etching process specifically includes: The frozen glass sample is fixed at both ends to the backing plate (4) by clamps (5) and chemically thinned in an immersion etching machine (6).

5. The processing method according to claim 4, characterized in that, The chemical thinning process takes 5 to 30 minutes.

6. The processing method according to claim 4, characterized in that, The immersion etching machine (6) contains an etching solution.

7. The processing method according to claim 6, characterized in that, The etching solution includes hydrofluoric acid.

8. The processing method according to claim 7, characterized in that, The etching solution also includes sulfuric acid and / or hydrochloric acid.

9. The processing method according to claim 7, characterized in that, The concentration of the hydrofluoric acid is ≤15%.

10. The processing method according to claim 8, characterized in that, The concentration of the sulfuric acid is 10-12%.

11. The processing method according to claim 8, characterized in that, The concentration of the hydrochloric acid is ≤5%.

12. The processing method according to claim 4, characterized in that, The temperature for the chemical thinning process is 5~15℃.

13. A grooved ultrathin glass, characterized in that, The ultra-thin glass is processed using the processing method described in any one of claims 1-12. The ultra-thin glass includes a thinning region and a non-thinning region (9). The thinning region includes a folding region (7) and a transition region (8) symmetrically arranged at both ends of the folding region (7). The transition region (8) and the folding region (7) are smoothly connected. The two ends of the transition region (8) are smoothly connected to the non-thinning region (9).

14. The ultrathin glass according to claim 13, characterized in that, The width of the folded area (7) is 10~50mm.

15. The ultrathin glass according to claim 13, characterized in that, The width of the transition zone (8) is 10~50mm.

16. The ultrathin glass according to claim 13, characterized in that, The thickness of the non-thinning region (9) is 50~200μm.

17. The ultrathin glass according to claim 13, characterized in that, The height difference between the upper surface of the folded region (7) and the upper surface of the non-thinning region (9) is 20~150μm.

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