CN112679113A - Preparation method of ultrathin glass and laminated composite glass thereof - Google Patents
Preparation method of ultrathin glass and laminated composite glass thereof Download PDFInfo
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- CN112679113A CN112679113A CN201911058169.1A CN201911058169A CN112679113A CN 112679113 A CN112679113 A CN 112679113A CN 201911058169 A CN201911058169 A CN 201911058169A CN 112679113 A CN112679113 A CN 112679113A
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- laminated composite
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- 239000011521 glass Substances 0.000 title claims abstract description 193
- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 50
- 239000000853 adhesive Substances 0.000 claims abstract description 33
- 230000001070 adhesive effect Effects 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000005340 laminated glass Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000010923 batch production Methods 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- XOJVVFBFDXDTEG-UHFFFAOYSA-N Norphytane Natural products CC(C)CCCC(C)CCCC(C)CCCC(C)C XOJVVFBFDXDTEG-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
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- Laminated Bodies (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention provides a preparation method of ultrathin glass and laminated composite glass thereof, wherein the preparation method of the ultrathin glass comprises the following steps: s1) preparing laminated composite glass, at least comprising a top glass layer and a bottom glass layer (100) which are laminated with each other and bonded by a water-soluble bonding glue (200); s2) carrying out single-side or double-side thinning treatment on the surface of the laminated composite glass; s3) dissolving the water-soluble adhesive glue (200) in the laminated layers with water at 60 ℃ or higher to separate at least two laminated glass layers (100) from each other into independent ultra-thin glasses, each ultra-thin glass having a thickness of 0.001mm to 0.55 mm. The method for preparing the ultrathin glass by using the laminated composite glass has high cost rate, can realize batch production of the ultrathin glass, and has ingenious design and strong practicability.
Description
Technical Field
The invention relates to the field of foldable mobile phone accessories, in particular to a preparation method of ultrathin glass and laminated composite glass thereof.
Background
At present, a foldable mobile phone is emerging, and as a cover plate of the foldable mobile phone, tempered glass may be broken by abutting each other in the folding and unfolding processes, which cannot meet the requirement of high-frequency use of the foldable mobile phone. In this case, a transparent polyimide (CPI) cover sheet is attracting attention, however, the CPI cover sheet has disadvantages in that: when the phone is dropped on a rough floor, the CPI cover plate may be scratched. Therefore, there is a need to provide a plate body that is used as a foldable mobile phone cover and is not easily scratched. The ultra-thin glass can be used as a protective glass material of a foldable mobile phone. In 2014, samsung electronics developed Ultra-Thin Glass (UTG) for foldable cellular phones with their hands, which also works with Dowinsys, a korean special Glass maker, and published information showing that Ultra-Thin Glass developed by Dowinsys, which has a thickness of 100 μm or less, can be used as a foldable cellular phone protective Glass material. Corning corporation has also developed ultra-thin bendable glass having a thickness of about 0.1mm and a bend radius of up to 5 mm. The german schottky group is also developing ultra-thin glass thinner than human hair, and the flexible material can be used for manufacturing a folding smart phone or a flexible display screen, and the thickness of the ultra-thin glass can reach 0.07 mm. The south glass group of China also has related products. However, the thickness of the ultra-thin glass in the prior art is usually reduced by hydrofluoric acid (HF) direct corrosion, and the thickness reduction mode cannot be reduced to below 0.3mm, so the ultra-thin glass is easy to break and difficult to form, the yield is low, and if the adopted production equipment generates a clamping plate, the production equipment is difficult to process in the aspect of environmental protection and safety due to the existence of hydrofluoric acid, and the difficulty is brought to mass production. Therefore, a method for manufacturing ultra-thin glass, which is simple to process and can be mass-produced, is still lacking.
Disclosure of Invention
The invention provides a preparation method of ultrathin glass aiming at the technical problems, which can provide ultrathin glass with higher yield and lower preparation cost; the invention also provides laminated composite glass for preparing the ultrathin glass.
The invention provides a preparation method of ultrathin glass, which comprises the following steps:
s1) preparing laminated composite glass, at least comprising a top glass layer and a bottom glass layer (100) which are laminated with each other, and solidifying and bonding the top glass layer and the bottom glass layer through water-soluble bonding glue (200);
s2) carrying out single-side or double-side thinning treatment on the surface of the laminated composite glass;
s3) dissolving the water-soluble adhesive glue (200) in the laminated layers with water at 60 ℃ or higher to separate at least two laminated glass layers (100) from each other into independent ultra-thin glasses, each ultra-thin glass having a thickness of 0.001mm to 0.55 mm.
In the method for manufacturing the ultra-thin glass of the present invention, when the single-sided thinning process is performed in step S2, one of the top glass layer and the bottom glass layer is used as the thinned layer, and the rest is used as the supporting layer, wherein the thickness of the supporting layer is greater than 0.55mm or greater than or equal to the thickness of the thinned layer.
In the above method for manufacturing ultra-thin glass of the present invention, when the double-sided thinning process is performed in step S2, both the top surface of the top glass layer and the bottom surface of the bottom glass layer are thinned, and the thinning amounts of the two layers are the same.
In the above method for manufacturing ultra-thin glass of the present invention, step S1 includes a step of bonding and laminating the top glass layer and the bottom glass layer to each other by a water-soluble adhesive.
In the above ultra-thin glass manufacturing method of the present invention, in step S1, including step S11), a support layer is manufactured; s12) bonding and laminating the top glass layer, the support layer and the bottom glass layer to each other with a water-soluble adhesive; wherein, the supporting layer is a plastic or glass layer.
In the above method for manufacturing ultra-thin glass of the present invention, in step S1, the water-soluble adhesive glue (200) forms a glue frame or a glue surface.
In order to implement the preparation method, the invention also provides laminated composite glass for preparing ultrathin glass, which comprises a top glass layer and a bottom glass layer, wherein the top glass layer and the bottom glass layer are bonded through water-soluble adhesive.
In the laminated composite glass, a support body is further arranged between the top glass layer and the bottom glass layer (100); the support body is a glass layer or a plastic layer, and the support body and the adjacent bottom glass layer or top glass layer are bonded through water-soluble bonding glue (200).
In the laminated composite glass of the present invention, the water-soluble adhesive glue (200) is integrally formed as a glue surface.
In the laminated composite glass, the water-soluble bonding glue (200) is integrally formed into a glue frame, the glue frame and two adjacent glass layers of the glue frame enclose a containing cavity, and the containing cavity is filled with fillers, wherein the fillers comprise white newspaper, hydrosol or peelable glue.
The preparation method of the ultrathin glass comprises the steps of preparing laminated composite glass comprising at least two glass layers, thinning one or two surfaces of the laminated composite glass, and dissolving the water-soluble bonding glue to dissolve the composite glass into a plurality of pieces of ultrathin glass. The laminated composite glass in the preparation method comprises two laminated glass layers which are laminated together, and adjacent two layers are bonded through a water-soluble adhesive. The invention utilizes the laminated composite glass to prepare the ultrathin glass, and has good thinning effect, high yield and strong practicability.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of a laminated composite glass according to a first embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along the line A-A of the laminated composite glass shown in FIG. 1;
FIG. 3 is a schematic view of the attachment of a water-soluble adhesive glue to the laminated composite glass shown in FIG. 1;
FIG. 4 is a schematic structural view of a laminated composite glass according to a second embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view in the direction B-B of the laminated composite glass shown in FIG. 4;
fig. 6 shows a schematic structural view of a laminated composite glass according to a third embodiment of the present invention.
Detailed Description
The prior art can not directly reduce the thickness of glass by less than 0.3, and the glass is easy to break and can not be formed. The technical idea of the invention for solving the technical problem is as follows: the laminated composite glass is prepared, comprises at least two glass layers, is subjected to thinning treatment and is decomposed, so that the ultrathin glass is prepared. The laminated composite glass prepared firstly comprises at least two laminated glass layers, wherein the two adjacent glass layers are bonded through a water-soluble adhesive; on the basis of preparing the laminated composite glass, one surface or two surfaces of the laminated composite glass are thinned, and after the laminated composite glass is thinned, at least two glass layers can be conveniently separated by dissolving water-soluble bonding glue in the laminated composite glass, so that the preparation of the ultrathin glass is completed. The preparation method of the ultrathin glass has the advantages of wide application range, high equipment utilization rate, capability of being thinned in a horizontal type, a vertical type and a waterfall flow type, and high yield.
In order to make the technical purpose, technical solutions and technical effects of the present invention more clear and facilitate those skilled in the art to understand and implement the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Laminated composite glass
First embodiment
As shown in fig. 1-3, fig. 1 shows a schematic structural view of a laminated composite glass in a first embodiment of the present invention; FIG. 2 is a schematic cross-sectional view taken along the line A-A of the laminated composite glass shown in FIG. 1; fig. 3 is a schematic view showing the connection of the water-soluble adhesive of the laminated composite glass shown in fig. 1. Specifically, the laminated composite glass comprises two glass layers 100, a top layer and a bottom layer, which are arranged in a laminated manner, wherein the two glass layers 100 are both white glass layers; it is contemplated that other glass layers may be used for the top and bottom glass laminates 100. Here, each glass layer 100 has a thickness of 0.3mm to 1.5 mm. Wherein two laminated glass layers 100 are bonded by a water-soluble adhesive glue 200. In this embodiment, the water soluble adhesive 200 forms a frame between two adjacent layers along the periphery of the contact surface, that is, the water soluble adhesive is coated only on the edges of the two contact surfaces to form the frame, and the width of the frame is 0.2mm-1.0 mm. Here, the water-soluble adhesive tape 200 is a double-sided tape or other adhesive. Further, the glue frame and the two laminated glass layers 100 define a containing cavity, the containing cavity can be filled with the filler 300, and the filler 300 can be white newspaper, hydrosol, peelable glue and the like, so as to be separated during hot melting.
Second embodiment
The second embodiment differs from the first embodiment only in that: the water-soluble adhesive glue 200 covers the whole contact surface on two adjacent layer surfaces to form a glue surface, namely the water-soluble adhesive glue is coated on the whole surface of the two contact surfaces to form the glue surface, and the water-soluble adhesive glue forms the glue surface instead of a glue frame.
Specifically, as shown in fig. 4 and 5, fig. 4 shows a schematic structural view of a laminated composite glass according to a second embodiment of the present invention; FIG. 5 is a schematic cross-sectional view in the direction B-B of the laminated composite glass shown in FIG. 4. The laminated composite glass includes two glass layers 100 arranged in a laminated manner, and the two glass layers 100 are both white glass layers. It is understood that other glass layers may be used for glass layer 100.
Further, the two glass layers 100 are bonded by a water-soluble adhesive glue 200. Preferably, in the present embodiment, the water-soluble adhesive glue 200 forms a glue surface. The thickness of the rubber surface is 0.2mm-1.0 mm. The water-soluble adhesive tape 200 is a double-sided tape or other adhesive. The thickness of the pristine glass layer 100 is 0.3mm to 1.5 mm.
Third embodiment
As shown in fig. 6, the laminated composite glass according to the third embodiment of the present invention shown in fig. 6 includes a top glass layer 100, a support layer 100, and a bottom glass layer 100, which are laminated, and the layers are bonded by a water-soluble adhesive 200. Wherein, the top glass layer 100 and the bottom glass layer 100 are both white glass layers; it is understood that other glass layers may be used for glass layer 100. And the support body is positioned between the top glass layer and the bottom glass layer and is a glass layer or a plastic layer. The plastic layer is typically organic resistant to hydrofluoric acid.
Further, the water-soluble adhesive tape 200 is a double-sided tape or other adhesive. The water soluble adhesive glue 200 may form a glue face or a glue frame. The thickness of the rubber surface or the rubber frame is 0.2mm-1.0mm, and the width of the rubber frame is 1.0-20 mm.
When the water-soluble adhesive glue 200 is a glue frame, the two glass layers 100 adjacent to the water-soluble adhesive glue enclose a containing cavity, and the containing cavity can be filled with fillers, such as white newspaper or hydrosol. The filler can be filled by dispensing. Wherein the initial thickness of the glass layer 100 is 0.5mm to 1.5 mm. The thickness of the support is greater than 0.55mm or greater than or equal to the thickness of the bottom layer glass or the top layer glass.
Examples of methods for producing ultra-thin glass
A preparation method of ultrathin glass based on laminated composite glass comprises the following steps:
s1) preparing a laminated composite glass, which may be as shown in the first or second embodiment;
s2) thinning the laminated composite glass, wherein the thinning can be performed by single-sided or double-sided thinning;
s3) dissolving the water-soluble bonding glue 200 in the laminated composite glass after thinning treatment by water at the temperature of more than 60 ℃, thereby separating the two glass layers 100 into two ultrathin glasses with the thickness being thinned to be within 0.001mm-0.55 mm.
When the laminated composite glass is thinned on one side, one glass layer 100 is used as a thinned glass layer, and the other glass layer 100 is used as a support layer. The thickness of the support layer is preferably greater than 0.55mm or the thickness of the support layer is required to be greater than or equal to the thickness of the reduced glass layer.
If the laminated composite glass is thinned on both sides, the thicknesses of the two glass layers 100 are the same.
When the laminated composite glass is the laminated composite glass according to the third embodiment, single-sided or double-sided thinning may be employed. Double-sided thinning is preferred, which can improve throughput.
The laminated composite glass of the third embodiment is suitable for thinning to 0.001mm-0.55 mm.
Further, the glass layers 100 of the top and bottom surfaces of the laminated composite glass of the third embodiment may be used as the thinned glass layers, and the thickness of the support body is determined according to the size of the thinned glass layers. For large sheets of reduced thickness glass, the support thickness is 0.55mm to 4 mm. The thinning mode can adopt a vertical thinning mode.
When the glass layers 100 on the top and bottom surfaces of the laminated composite glass are thinned glass layers, the two thinned glass layers may have the same thickness or may not have the same thickness.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The preparation method of the ultrathin glass is characterized by comprising the following steps of:
s1) preparing laminated composite glass, at least comprising a top glass layer and a bottom glass layer (100) which are laminated with each other, and solidifying and bonding the top glass layer and the bottom glass layer through water-soluble bonding glue (200);
s2) carrying out single-side or double-side thinning treatment on the surface of the laminated composite glass;
s3) dissolving the water-soluble adhesive glue (200) in the laminated layers with water at 60 ℃ or higher to separate at least two laminated glass layers (100) from each other into independent ultra-thin glasses, each ultra-thin glass having a thickness of 0.001mm to 0.55 mm.
2. The method according to claim 1, wherein in the step S2, when the single-sided thinning process is performed, one of the top glass layer and the bottom glass layer is used as the thinned layer, and the rest is used as a supporting layer, and the thickness of the supporting layer is greater than 0.55mm or greater than or equal to the thickness of the thinned layer.
3. The manufacturing method according to claim 1, wherein in the step S2, when the double-sided thinning process is performed, both the top surface of the top glass layer and the bottom surface of the bottom glass layer are thinned, and the thinning amounts of the two layers are the same.
4. The method of claim 1, wherein step S1 includes a step of bonding and laminating the top and bottom glass layers to each other by a water-soluble adhesive.
5. The production method according to claim 1, wherein in step S1, including step S11), a support layer is prepared; s12) bonding and laminating the top glass layer, the support layer and the bottom glass layer to each other with a water-soluble adhesive; wherein, the supporting layer is a plastic or glass layer.
6. The method of claim 4 or 5, wherein in step S1, the water-soluble adhesive glue (200) forms a glue frame or a glue surface.
7. A laminated composite glass for preparing ultrathin glass is characterized by comprising a top glass layer and a bottom glass layer which are bonded through a water-soluble adhesive.
8. The laminated composite glass of claim 7, further comprising a support between the top and bottom glass layers (100); the support body is a glass layer or a plastic layer, and the support body and the adjacent bottom glass layer or top glass layer are bonded through water-soluble bonding glue (200).
9. The laminated composite glass of claim 7 or 8, wherein the water soluble adhesive glue (200) integrally forms a glue face.
10. The laminated composite glass according to claim 7 or 8, wherein the water-soluble adhesive glue (200) is integrally formed into a glue frame, the glue frame and the two adjacent glass layers enclose a containing cavity, and the containing cavity is filled with a filler, and the filler comprises white newspaper or hydrosol or peelable glue.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019109942082 | 2019-10-18 | ||
| CN201910994208 | 2019-10-18 |
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| CN112679113A true CN112679113A (en) | 2021-04-20 |
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| CN201921875023.1U Active CN211770940U (en) | 2019-10-18 | 2019-11-01 | Laminated composite glass |
| CN201911058169.1A Pending CN112679113A (en) | 2019-10-18 | 2019-11-01 | Preparation method of ultrathin glass and laminated composite glass thereof |
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| CN211770940U (en) * | 2019-10-18 | 2020-10-27 | 重庆鑫景特种玻璃有限公司 | Laminated composite glass |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223049A1 (en) * | 2011-02-01 | 2012-09-06 | Micro Technology Co., Ltd. | Thin-sheet glass substrate laminate and method of manufacturing the same |
| CN204644161U (en) * | 2015-05-13 | 2015-09-16 | 湖北鸿创科技有限公司 | The thinning production line of glass single-sided on liquid crystal display production line |
| CN106565103A (en) * | 2016-11-15 | 2017-04-19 | 惠州市宝明精工有限公司 | Method for thinning glass |
| CN106698958A (en) * | 2016-08-29 | 2017-05-24 | 湖北鸿创科技有限公司 | OLED single side thinning method |
| CN106746705A (en) * | 2017-02-13 | 2017-05-31 | 京东方科技集团股份有限公司 | Glass single-sided thining method and glass thinning equipment |
| CN211770940U (en) * | 2019-10-18 | 2020-10-27 | 重庆鑫景特种玻璃有限公司 | Laminated composite glass |
-
2019
- 2019-11-01 CN CN201921875023.1U patent/CN211770940U/en active Active
- 2019-11-01 CN CN201911058169.1A patent/CN112679113A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120223049A1 (en) * | 2011-02-01 | 2012-09-06 | Micro Technology Co., Ltd. | Thin-sheet glass substrate laminate and method of manufacturing the same |
| CN204644161U (en) * | 2015-05-13 | 2015-09-16 | 湖北鸿创科技有限公司 | The thinning production line of glass single-sided on liquid crystal display production line |
| CN106698958A (en) * | 2016-08-29 | 2017-05-24 | 湖北鸿创科技有限公司 | OLED single side thinning method |
| CN106565103A (en) * | 2016-11-15 | 2017-04-19 | 惠州市宝明精工有限公司 | Method for thinning glass |
| CN106746705A (en) * | 2017-02-13 | 2017-05-31 | 京东方科技集团股份有限公司 | Glass single-sided thining method and glass thinning equipment |
| CN211770940U (en) * | 2019-10-18 | 2020-10-27 | 重庆鑫景特种玻璃有限公司 | Laminated composite glass |
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Application publication date: 20210420 |