CN105174735A - Anti-dazzle glass and preparation method thereof - Google Patents

Anti-dazzle glass and preparation method thereof Download PDF

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Publication number
CN105174735A
CN105174735A CN201510679442.8A CN201510679442A CN105174735A CN 105174735 A CN105174735 A CN 105174735A CN 201510679442 A CN201510679442 A CN 201510679442A CN 105174735 A CN105174735 A CN 105174735A
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glass
glass basis
basis
preparation
uneven surface
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CN105174735B (en
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高为彪
祝健
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SHANGHAI GUANG HE OPTICS MANUFACTURE Co.,Ltd.
SHANGHAI GUANGHE OPTICAL MANUFACTURING Co.,Ltd.
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SHANGHAI GUANG HE OPTICS MANUFACTURE Co Ltd
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Abstract

The invention discloses anti-dazzle glass. The anti-dazzle glass comprises a basic glass body, wherein the upper surface and the lower surface of the basic glass body are respectively a smooth surface and a coarse surface; the basic glass body needs to be subjected to toughening treatment; the coarse surface is provided with an anti-reflection film layer; the anti-reflection film layer is provided with an anti-fouling layer; the smooth surface is provided with a silk screen printing layer. The invention also discloses a preparation method of the anti-dazzle glass. The preparation method comprises the following steps of step one, basic glass body preparation; step two, basic glass body forming and processing; step three, basic glass body toughening treatment; step four, precise printing technology; step five, performing of a precise film coating technology; step six, performing of an anti-fouling treatment technology. Compared with the prior art, the reflectivity of the anti-dazzle glass disclosed by the invention is lower than that of anti-dazzle glass in the prior art, the transmittance of the anti-dazzle glass disclosed by the invention is fundamentally equal to that of the anti-dazzle glass in the prior art, and the attractiveness, the hardness and the decontamination ability of the anti-dazzle glass disclosed by the invention are all higher than those of the anti-dazzle glass in the prior art.

Description

A kind of anti-glare glass and preparation method thereof
Technical field
The present invention relates to glass manufacturing area, particularly a kind of anti-glare glass and preparation method thereof.
Background technology
In China, very large to the demand of anti-glare glass at present, this is because the upstream product of anti-glare glass, the screen etc. as vehicle-mounted glass, mobile phone and other electronic products all needs to use anti-glare glass.Compared with traditional glass, the antireflection rate of anti-glare glass is higher, and general reflectivity is 2 percent, and this makes the experience of traffic safety and electronic product user obtain guarantee.So the research for anti-glare glass is extremely necessary.
But for now, the anti-glare glass quality that market is sold is uneven, although some anti-glare glass antireflection ability is very high, its transmittance but reduces much.Meanwhile, anti-dazzle ability too focused on by most of anti-glare glass, and all do not make too large lifting for the hardness of glass, the aesthetic measure of glass, the detergency ability etc. of glass, this seriously result in the overall performance of anti-glare glass.
Summary of the invention
Object of the present invention, provide the superior anti-glare glass of a kind of overall performance exactly to solve the problem, this anti-glare glass, through a series of special treatment process, not only has antiradar reflectivity, high transmission rate, its hardness also improves simultaneously, and more convenient when cleaning.
Another object of the present invention also there are provided a kind of preparation method of anti-glare glass.
For achieving the above object, technical scheme of the present invention is implemented as follows:
A kind of anti-glare glass of the present invention, comprise glass basis, the upper and lower surface of described glass basis is respectively shiny surface and uneven surface, described glass basis need through tempering process, described uneven surface is provided with anti-reflective film layer, described anti-reflecting layer is provided with stain-proofing layer, described shiny surface is provided with screen-printed layers; Described uneven surface comprises the protruding particle of several random alignment, and the hill height of described protruding particle is 6-8 μm, and the roughness of described uneven surface is greater than 0.8 μm.
Present invention also offers a kind of preparation method of anti-glare glass, this preparation method comprises the following steps:
Step 1: the preparation of glass basis
Being dipped to by sheet glass is added with in the hot water of washing composition, controls water temperature and takes out after 40-50 DEG C, 20-30min, after rinsing 2-3 time, is placed in by sheet glass in dustless dryer, adopts warm air drying 5-10min with clear water; By the sheet glass even spread one deck after oven dry in order to the not etched colloid in protective glass sheet surface, and by colloid dry solidification; Sheet glass after dry solidification is placed in frosting groove, with pump, frosted liquid is sent in frosting groove, frosting groove cap seal is closed, open frosting groove switch, after 30-90s, frosted liquid is discharged frosting groove, then by scavenging solution with in pump input frosting groove, after completing cleaning, discharge scavenging solution; Sheet glass is taken out from frosting groove, in colloid scavenging solution, the colloid in sheet glass one side is removed, and be placed in ultrasonic cleaning machine and clean 30-40min, in ultrasonic cleaning machine, deionized water is housed, after ultrasonic cleaning terminates, take out sheet glass and be placed in dustless dryer, adopt warm air drying 5-10min, namely the glass basis in the present invention is prepared into, stand-by;
Step 2: glass basis forming process
The two sides of glass basis is all coated with one deck ink, and glass basis is placed in ultraviolet ray drying box dry solidification is carried out to ink; Glass basis after dry solidification is cut into different shapes according to the demand of technique, and the glass basis after cutting is placed in clean-out system and carries out moving back ink process; Glass basis after process clear water rinses 2-3 time, is placed in dustless dryer, adopts warm air drying 5-10min;
Step 3: glass basis tempering process
Glass basis after forming process is placed in potassium nitrate solution, and control temperature, after 400-480 DEG C, 8-10h, takes out glass basis, and rinses 4-5 time with clear water, is placed in dustless dryer, adopts warm air drying 5-10min;
Step 4: accurate typography
Glass basis after processing above is divided into shiny surface and uneven surface two faces, shiny surface adopts silk-screen printing technique, is printed on shiny surface by required pattern;
Step 5: accurate coating process
Adopt coating process, described uneven surface evenly plates one deck anti-reflective film, and the material of described anti-reflective film is SnO 2or TiO 2in any one;
Step 6: antifouling treatment process
Adopt nano-spray technology, even application one deck fluorine system macromolecular material in described anti-reflective film layer, form stain-proofing layer.
Beneficial effect of the present invention is as follows:
Compared with prior art, anti-glare glass of the present invention not only have passed through glass etching technique, also through glass tempering treatment process, accurate typography, accurate coating process, antifouling treatment process.Its luminance factor anti-glare glass of the prior art is low, and transmitance is basic and prior art is fair, and aesthetic measure, hardness and soil removability are all higher than prior art.Meanwhile, consider Cost Problems, the starting material used in anti-glare glass preparation process of the present invention are through repetition test, starting material costly among prior art have been replaced to more cheap starting material, has reduced the cost manufacturing anti-glare glass.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of anti-glare glass of the present invention;
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment
The invention discloses a kind of anti-glare glass, this anti-glare glass comprises glass basis 1, and glass basis 1 is divided into shiny surface and uneven surface, shiny surface is provided with screen-printed layers 4, uneven surface is provided with anti-reflective film layer 2, anti-reflecting layer 2 is provided with stain-proofing layer 3.
The invention also discloses the preparation method of this anti-glare glass, its preparation process is divided into six steps, is respectively: the preparation of glass basis 1, glass basis 1 forming process, the process of glass basis 1 tempering, accurate typography, accurate coating process and antifouling treatment process.
The concrete operation method of each step is as follows:
Step 1: the preparation of glass basis 1
The preparation of glass basis 1, selects general silica sheet glass as starting material, carries out glass etching by etch process, reach anti-dazzle effect.
The first step, is dipped to sheet glass and is added with in the hot water of washing composition, controls water temperature at 45 DEG C, takes out, after rinsing 3 times, be placed in by sheet glass in dustless dryer with clear water after 25min, adopt warm air drying 10min.
Second step, the sheet glass even spread one deck after just drying in order to the not etched colloid in protective glass sheet surface, and by colloid dry solidification.
3rd step, is placed in the sheet glass after dry solidification in frosting groove, sends in frosting groove with pump by frosted liquid, frosting groove cap seal is closed, opens frosting groove switch, after 60s, frosted liquid is discharged frosting groove, again scavenging solution pump is inputted in frosting groove, after completing cleaning, discharge scavenging solution.Above-mentioned frosted liquid comprises following component and weight part thereof: 12 parts, hydrogen fluoride, Neutral ammonium fluoride 6 parts, 9 parts, sulfuric acid, 15 parts, nitric acid, potassium sulfate 0.25 part, 0.1 part, ammonium nitrate, 0.25 part, copper sulfate, acid fog inhibitor 0.05 part, alkylphenol polyoxyethylene 0.15 part, sodium alkyl benzene sulfonate 0.6 part, alkyl sodium sulfonate 0.55 part, ethylene glycol 0.35 part, deionized water 42 parts.Adopt the frosted liquid of this formula, not only cost is lower, and the harm caused environment is very little.
4th step, sheet glass is taken out from frosting groove, in colloid scavenging solution, the colloid in sheet glass one side is removed, and be placed in ultrasonic cleaning machine and clean 35min, in ultrasonic cleaning machine, deionized water is housed, after ultrasonic cleaning terminates, taking out sheet glass is placed in dustless dryer, adopt warm air drying 10min, be namely prepared into the glass basis 1 in the present invention, stand-by;
The uneven surface of the glass basis 1 prepared comprises the protruding particle of several random alignment, and the hill height of described protruding particle is 6-8 μm, and the roughness of described uneven surface is greater than 0.8 μm.
Step 2: glass basis 1 forming process
The forming process of glass basis 1 is mainly in order to the step that the demand adapting to different client is formulated, and size as required, parting glass substrate takes on a different shape.
The first step, is all coated with one deck ink by the two sides of glass basis, and glass basis is placed in ultraviolet ray drying box and carries out dry solidification to ink.
Second step, cuts into different shapes by the glass basis 1 after dry solidification according to the demand of technique, and the glass basis 1 after cutting is placed in clean-out system and carries out moving back ink process.
3rd step, the glass basis 1 after process rinses 3 times with clear water, is placed in dustless dryer, adopts warm air drying 10min.
The object being more than coated with ink, mainly in order to protective glass matrix 1 surface, prevents from, when cutting, accidentally injuring glass basis, causing defect ware.
Step 3: glass basis 1 tempering process
Glass basis 1 after forming process is placed in potassium nitrate solution, and control temperature, at 450 DEG C, after 8h, takes out glass basis 1, and rinses 5 times with clear water, be placed in dustless dryer, adopt warm air drying 10min.
Step 4: accurate typography
Glass basis 1 after processing above is divided into shiny surface and uneven surface two faces, shiny surface adopts silk-screen printing technique, is printed on shiny surface by required pattern.What silk screen printing here adopted is traditional technology, and object on anti-glare glass, prints its pattern needed according to the demand of client, makes anti-glare glass more attractive in appearance.
Step 5: accurate coating process
Adopt coating process, described coarse on evenly plate one deck anti-reflective film, the material of described anti-reflective film is SnO 2.This coating process is traditional coating process, and its effect is the antireflection ability strengthening anti-glare glass.
Step 6: antifouling treatment process
Adopt nano-spray technology, even application one deck polytetrafluoroethylmaterial material in described anti-reflective film layer 2, form stain-proofing layer 3.The effect of stain-proofing layer 3 is not only and is made the unsuitable stick-down such as greasy dirt, grieshoch on anti-glare glass, and after having also had stain-proofing layer, cleaning glass becomes and has been more prone to.
Following table is the Performance comparision table of anti-glare glass in embodiments of the invention and prior art.
Reflectivity (%) Transmittance (%) Hardness (HV) Soil removal efficiency (%)
Embodiment 1 1.2 83.5 585 96
Prior art 2 80 525 85
As can be known from the above table, compared with prior art, not only reflectivity is lower in the present invention, and transmittance also promotes to some extent.Meanwhile, after adding tempering process and stain-proofing layer, soil removability and the hardness of anti-glare glass of the present invention also strengthen to some extent.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.

Claims (2)

1. an anti-glare glass, comprise glass basis, the upper and lower surface of described glass basis is respectively shiny surface and uneven surface, it is characterized in that, described glass basis need through tempering process, described uneven surface is provided with anti-reflective film layer, described anti-reflecting layer is provided with stain-proofing layer, described shiny surface is provided with screen-printed layers; Described uneven surface comprises the protruding particle of several random alignment, and the hill height of described protruding particle is 6-8 μm, and the roughness of described uneven surface is greater than 0.8 μm.
2. a preparation method for anti-glare glass as claimed in claim 1, is characterized in that, this preparation method comprises the following steps:
Step 1: the preparation of glass basis
Being dipped to by sheet glass is added with in the hot water of washing composition, controls water temperature and takes out after 40-50 DEG C, 20-30min, after rinsing 2-3 time, is placed in by sheet glass in dustless dryer, adopts warm air drying 5-10min with clear water; By the sheet glass even spread one deck after oven dry in order to the not etched colloid in protective glass sheet surface, and by colloid dry solidification; Sheet glass after dry solidification is placed in frosting groove, with pump, frosted liquid is sent in frosting groove, frosting groove cap seal is closed, open frosting groove switch, after 30-90s, frosted liquid is discharged frosting groove, then by scavenging solution with in pump input frosting groove, after completing cleaning, discharge scavenging solution; Sheet glass is taken out from frosting groove, in colloid scavenging solution, the colloid in sheet glass one side is removed, and be placed in ultrasonic cleaning machine and clean 30-40min, in ultrasonic cleaning machine, deionized water is housed, after ultrasonic cleaning terminates, take out sheet glass and be placed in dustless dryer, adopt warm air drying 5-10min, namely the glass basis in the present invention is prepared into, stand-by;
Step 2: glass basis forming process
The two sides of glass basis is all coated with one deck ink, and glass basis is placed in ultraviolet ray drying box dry solidification is carried out to ink; Glass basis after dry solidification is cut into different shapes according to the demand of technique, and the glass basis after cutting is placed in clean-out system and carries out moving back ink process; Glass basis after process clear water rinses 2-3 time, is placed in dustless dryer, adopts warm air drying 5-10min;
Step 3: glass basis tempering process
Glass basis after forming process is placed in potassium nitrate solution, and control temperature, after 400-480 DEG C, 8-10h, takes out glass basis, and rinses 4-5 time with clear water, is placed in dustless dryer, adopts warm air drying 5-10min;
Step 4: accurate typography
Glass basis after processing above is divided into shiny surface and uneven surface two faces, shiny surface adopts silk-screen printing technique, is printed on shiny surface by required pattern;
Step 5: accurate coating process
Adopt coating process, described uneven surface evenly plates one deck anti-reflective film, and the material of described anti-reflective film is SnO 2or TiO 2in any one;
Step 6: antifouling treatment process
Adopt nano-spray technology, even application one deck fluorine system macromolecular material in described anti-reflective film layer, form stain-proofing layer.
CN201510679442.8A 2015-10-19 2015-10-19 A kind of anti-dazzle glas and preparation method thereof Active CN105174735B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107032635A (en) * 2017-05-19 2017-08-11 信利光电股份有限公司 A kind of bend glass and preparation method thereof
CN107237430A (en) * 2017-05-17 2017-10-10 南通德瑞森复合材料有限公司 A kind of anti-dazzle heat-protecting glass steel curtain wall
CN107902913A (en) * 2017-11-07 2018-04-13 太仓经济开发区蕴源吉光工艺美术品工作室 The production method of concave convered glass
CN109664628A (en) * 2018-12-21 2019-04-23 东莞市银泰丰光学科技有限公司 A kind of production method of novel dumb light anti-dazzle glas
CN109987863A (en) * 2019-04-03 2019-07-09 广东中航特种玻璃技术有限公司 Frosting laminated glass and preparation method thereof
CN110228307A (en) * 2019-05-27 2019-09-13 上海秀卡工业产品设计有限公司 Model interior trim screen silk-screen printing technique
CN110451813A (en) * 2019-09-10 2019-11-15 深圳麦格科技有限公司 Frosting spray equipment and system of processing
CN113459714A (en) * 2021-07-20 2021-10-01 滕州市方长玻璃有限公司 Preparation method of anti-dazzle glass craft picture
CN113772956A (en) * 2021-09-28 2021-12-10 蓝思科技(东莞)有限公司 Anti-glare glass and preparation method thereof
CN114538787A (en) * 2022-01-11 2022-05-27 无锡市科虹标牌有限公司 Glass front etching electroplating method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1081545A (en) * 1996-09-03 1998-03-31 Central Glass Co Ltd Glare-proof glass
CN102448904A (en) * 2009-03-31 2012-05-09 康宁股份有限公司 Glass having anti-glare surface and method of making
CN102887647A (en) * 2012-10-11 2013-01-23 郑州恒昊玻璃技术有限公司 Process for producing anti-glare glass by using high-boron silicon and high-aluminium silicon glasses
CN103214173A (en) * 2013-03-11 2013-07-24 徐州浩通水射流科技有限公司 Method for reducing edge-breaking when cutting brittle materials by water jet
CN104955783A (en) * 2013-01-30 2015-09-30 旭硝子株式会社 Transparent base having stain-proof film attached thereto

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1081545A (en) * 1996-09-03 1998-03-31 Central Glass Co Ltd Glare-proof glass
CN102448904A (en) * 2009-03-31 2012-05-09 康宁股份有限公司 Glass having anti-glare surface and method of making
CN102887647A (en) * 2012-10-11 2013-01-23 郑州恒昊玻璃技术有限公司 Process for producing anti-glare glass by using high-boron silicon and high-aluminium silicon glasses
CN104955783A (en) * 2013-01-30 2015-09-30 旭硝子株式会社 Transparent base having stain-proof film attached thereto
CN103214173A (en) * 2013-03-11 2013-07-24 徐州浩通水射流科技有限公司 Method for reducing edge-breaking when cutting brittle materials by water jet

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107237430A (en) * 2017-05-17 2017-10-10 南通德瑞森复合材料有限公司 A kind of anti-dazzle heat-protecting glass steel curtain wall
WO2018209798A1 (en) * 2017-05-17 2018-11-22 南通德瑞森复合材料有限公司 Anti-glare heat-insulating fiberglass curtain wall
CN107032635A (en) * 2017-05-19 2017-08-11 信利光电股份有限公司 A kind of bend glass and preparation method thereof
CN107902913A (en) * 2017-11-07 2018-04-13 太仓经济开发区蕴源吉光工艺美术品工作室 The production method of concave convered glass
CN109664628A (en) * 2018-12-21 2019-04-23 东莞市银泰丰光学科技有限公司 A kind of production method of novel dumb light anti-dazzle glas
CN109987863A (en) * 2019-04-03 2019-07-09 广东中航特种玻璃技术有限公司 Frosting laminated glass and preparation method thereof
CN110228307A (en) * 2019-05-27 2019-09-13 上海秀卡工业产品设计有限公司 Model interior trim screen silk-screen printing technique
CN110451813A (en) * 2019-09-10 2019-11-15 深圳麦格科技有限公司 Frosting spray equipment and system of processing
CN113459714A (en) * 2021-07-20 2021-10-01 滕州市方长玻璃有限公司 Preparation method of anti-dazzle glass craft picture
CN113772956A (en) * 2021-09-28 2021-12-10 蓝思科技(东莞)有限公司 Anti-glare glass and preparation method thereof
CN114538787A (en) * 2022-01-11 2022-05-27 无锡市科虹标牌有限公司 Glass front etching electroplating method

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Address after: 224100 building 4, east of Changzhou Road and north of Youyi Road, Changzhou Industrial Park, Dafeng District, Yancheng City, Jiangsu Province

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Address before: 200438 Building No. 1135, Baotou Road, Yangpu District, Shanghai, 4

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