CN103941317A - Anti-static light diffusion plate and manufacturing method and device thereof - Google Patents
Anti-static light diffusion plate and manufacturing method and device thereof Download PDFInfo
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- CN103941317A CN103941317A CN201410179583.9A CN201410179583A CN103941317A CN 103941317 A CN103941317 A CN 103941317A CN 201410179583 A CN201410179583 A CN 201410179583A CN 103941317 A CN103941317 A CN 103941317A
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- light diffusing
- sheet
- flat sheet
- thin layer
- electrically conducting
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Abstract
The invention relates to an anti-static light diffusion plate which comprises a transparent resin layer and a transparent conductive thin layer, and the transparent resin layer and the transparent conductive thin layer are sequentially overlaid. The transparent conductive thin layer is an ITO transparent conductive thin layer or an AZO transparent conductive thin layer. In the light diffusion plate production process, the process of coating the light diffusion plate with the transparent conductive thin layer is added, and static of the light diffusion plate is removed once and for all. A static groove accommodating transparent conductive liquid is added in a diffusion plate production line, rollers are rotated to coat the surface of a plane plate in contact with the roller with the conductive liquid, the structure is simple, efficiency is high, and coating can be quickly completed before cooling of the light diffusion plate which is made in an injection molding mode. The invention further discloses a production method and device of the anti-static light diffusion plate.
Description
Technical field
The present invention relates to optical material, particularly a kind of antistatic light diffusing sheet and manufacturing method and apparatus thereof, specifically the present invention relates to a kind of antistatic light diffusing sheet and manufacturing method and apparatus thereof that has applied transparent conductive film.
Background technology
Light diffusing sheet claims again even tabula rasa, in LED illumination and liquid crystal flat panel display industry extensive application, requires to have the features such as light diffusing is high, transmittance is high.The Main Ingredients and Appearance of light diffusing sheet is transparent resin base material and doping a little light diffusing agent wherein at present, the transparent resin base material here comprises polycarbonate (polycarbonate, abbreviation PC), polymethyl methacrylate (polymethylmethacrylate, be called for short PMMA) and polystyrene (polystyrene is called for short PS).
The manufacture method of light diffusing sheet, is the transparent resin base material of the diffusion particle that adulterated to be heated to the high temperature of 210 ° of C to 230 ° of C, is extruded into the continuous flat sheet of preset thickness, cooling after-hardening moulding under molten condition.Sheet material as a kind of macromolecule composition, light diffusing sheet molds after die head usually with high-pressure electrostatic, static is often up to 20,000 volts, this has potential safety hazard to operating personnel, high-pressure electrostatic also can adsorb the foreign matter in production environment simultaneously, tend to reduce the transmittance of light diffusing sheet, clean these foreign matters have increased production cost.
So produce the technique of light diffusing sheet, comprise the operation destaticing, traditional technique is to adopt electrostatic rod to remove the static producing.But light diffusing sheet can cause in production technology and need repeatedly to eliminate static again with high-pressure electrostatic again after entering subsequent processing, has increased operating personnel's workload, and in production environment, has brought potential safety hazard.
Summary of the invention
Fundamental purpose of the present invention is to disclose a kind of antistatic light diffusing sheet, the disposable static of thoroughly removing forevermore in the moulding process of light diffusing sheet.
Another object of the present invention is the manufacture method that discloses a kind of antistatic light diffusing sheet, in process of production disposable eternal removal static safely and effectively.
Another object of the present invention is the manufacturing installation that discloses a kind of antistatic light diffusing sheet, embeds the parts that apply nesa coating on diffuser plate production line.
The invention discloses a kind of antistatic light diffusing sheet, comprise the transparent resin layer and the electrically conducting transparent thin layer that stack gradually; Described transparent resin layer comprises transparent resin base material and doping diffusion particle wherein, and described diffusion particle is dispersed to be present in described transparent resin base material; Described electrically conducting transparent thin layer is ITO indium oxide base electrically conducting transparent thin layer, or AZO zinc-oxide-base transparent electrically conductive layer.
Described electrically conducting transparent thin layer is positioned at incidence surface or the exiting surface of described light diffusing sheet.
Described transparent resin base material is polycarbonate, or polymethyl methacrylate, or polystyrene.
The manufacture method that the invention also discloses a kind of aforesaid antistatic light diffusing sheet, comprising:
The first step, heats described transparent resin base material and doping light diffusing agent wherein to molten condition, then is extruded into flat sheet by exit wound of bullet;
Second step, flat sheet reaches needed thickness described in rolling; By running roller, down transmit again, progressively cooling;
The 3rd step, 1/3rd the position that declined of the temperature in the temperature of described flat sheet from described exit wound of bullet place applies electrically conducting transparent thin layer on a surface of described flat sheet.
In described second step, also processing the surface that applies electrically conducting transparent thin layer in described flat sheet is coarse surface.
The invention also discloses the manufacturing installation of aforesaid antistatic light diffusing sheet, comprise that the described transparent resin base material of heating and doping light diffusing agent are wherein to the blast furnace of molten condition; The transparent resin base material of described molten condition and doping light diffusing agent are wherein extruded into the exit wound of bullet parts of flat sheet; Be positioned near described exit wound of bullet parts, three cover rolls of flat sheet described in rolling; And the running roller that down transmits described flat sheet; Also comprise the 4th roll and the static groove that are arranged between the running roller that down transmits described flat sheet, in described static groove, have electrically conducting transparent liquid, described the 4th roll contacts a surface of described flat sheet, partly immerses in described electrically conducting transparent liquid simultaneously.
Described static groove has heat insulation function.The above earth potential of described static groove is zero.The temperature that described the 4th roll and static groove are positioned at described flat sheet is than the temperature at described exit wound of bullet parts place 1/3rd the position that declined.
A kind of antistatic light diffusing sheet disclosed by the invention and manufacturing method and apparatus thereof, by increase the operation that applies electrically conducting transparent thin layer to light diffusing sheet in light diffusing sheet production technology, incidence surface or exiting surface at light diffusing sheet apply layer of transparent electrically conductive layer, thereby once and for all is removed static.The present invention is configured for the static groove that holds electrically conducting transparent liquid in diffuser plate production line, rotation by roll is coated in static liquid on the surface of the flat sheet contacting, efficiency simple in structure is high, can be rapidly before the light diffusing sheet of ejection formation is cooling, completes coating.
Accompanying drawing explanation
Fig. 1 is antistatic light diffusing sheet structural representation of the present invention.
Fig. 2 is diffuser plate production procedure block diagram of the present invention.
Fig. 3 is antistatic light diffusing sheet process units structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
In the prior art, diffuser plate is extrusion molding (flat sheet) under 200 ° of C to 260 ° of C, by electrostatic rod, remove static, then this flat sheet hardening by cooling on delivery roller, erect again trimming and crosscut limit, make the diffuser plate motherboard of one one, packing carrying then, now on diffuser plate motherboard often again with high-pressure electrostatic.The working temperature of extrusion molding is here to take PS material as example, and different material technology temperature can be different, lower same.
For thoroughly remove in the flat sheet of extrusion molding with static, the present invention applies the coating that one deck has electrically conducting transparent function in flat sheet.
The structural representation that the present invention manufactures successful antistatic light diffusing sheet as shown in Figure 1.Diffuser plate 100 comprises the transparent resin layer that is distributed with diffusant 101 and the electrically conducting transparent thin layer 103 stacking gradually.Wherein electrically conducting transparent thin layer 103 is positioned at the incidence surface of light diffusing sheet, or is positioned at the exiting surface of light diffusing sheet.
Be illustrated in figure 2 diffuser plate production procedure block diagram of the present invention.Antistatic light diffusing sheet production procedure of the present invention comprises:
Step 201:
Extrusion molding 201, comprising: the transparent resin that has mixed diffusion particle is heated to molten condition, and the exit wound of bullet parts by sheet extrusion device are extruded into flat sheet, then by thickness and the surface topography of a plurality of these flat sheet of roller roll control.
Step 203:
Electrically conducting transparent liquid applies 203, comprises and adopts running roller gluing method that transparent conductive film solution (for example fused agent of indium oxide is called for short the fused agent of ITO) is coated on a surface of above-mentioned flat sheet, remove simultaneously surface upper with high-pressure electrostatic.On the surface of this flat sheet, form electrically conducting transparent thin layer (for example indium oxide transparent conductive film, is called for short ITO coating).
The for example fused agent of described ITO, comprising the component of following mass percent:
0.5～1% In
2o
3;
4.5～6% SnO
2;
35～45% H
2o;
15～20% complexed surfactant (molecular formula: C6H15NO3xW99 for example; ); And
35～40% crosslinking chemical (as divinylbenzene and diisocyanate, N, N-methylene-bisacrylamide (MBA) etc.).
Also can use AZO fusion agent, its Main Ingredients and Appearance is zinc paste and aluminium oxide.After applying, the surface of flat sheet forms aluminum-doped zinc oxide transparent electrically conductive layer.
Step 205:
Hardening by cooling 205, comprise flat sheet after moulding on delivery roller by blower fan blow cooling after progressively sclerosis.
Step 207:
Trimming 207, comprises the flat sheet of sclerosis is cut to vertical edge and horizontal edge, manufactures the light diffusing sheet motherboard with anti-static function.
Because with electrically conducting transparent thin layer, so can not produce again static in the process of trimming and packing carrying, guaranteed producers' safety, and can not adsorb dust and impurity in environment on a surface of this light diffusing sheet motherboard.
Be illustrated in figure 3 antistatic light diffusing sheet process units structural representation of the present invention.The transparent resin 305 that is mixed with diffusant is molten, extrudes port 301 and slowly extrudes, through the first roll 302, the second roll 303 and the 3rd roll 304 extruding annular knurl moulding from template injection part; As seen from the figure, the first roll 302, the second roll 303 and the 3rd roll 304 locus are each other tight, rotation (not shown motor and transmission shaft) under driven by motor respectively, spacing between such the first roll 302 and the second roll 303, and the thickness that the spacing between the second roll 303 and the 3rd roll 304 can control plane sheet material.The rotation of roll also drives transparent resin 305 from template extruding end mouth 301 to underdrive, and respectively through the first roll 302, the second roll 303 and the 3rd roll 304, and the temperature of the transparent resin of this molten starts progressively to reduce, and is solidified into flat sheet.
The 4th roll 307 is for be coated with electrically conducting transparent thin layer in flat sheet, and its surfacing can take up the electrically conducting transparent liquid in static groove 308 and be coated in the flat sheet surface contacting in rotary course, removes the static on flat sheet surface simultaneously.As shown in Figure 3, the 4th roll 307 passes through a surface of contact plane sheet material, thereby realizes the coating of electrically conducting transparent liquid.The bottom of the 4th roll 307 is combined with and destatics groove 308 simultaneously, and this destatics in groove 308 has electrically conducting transparent liquid, a part for the 4th roll 307 to be just immersed in this electrically conducting transparent liquid.After the coating of the 4th roll 307, on a surface of flat sheet, just with electrically conductive layer, become diffusion motherboard 309.Diffusion motherboard 309 enters next station under roller (in figure for roller is shown) drives, and further lowers the temperature.Light diffusing sheet motherboard is packed transhipment after trimming and cutting, and static electrification again, does not become the light diffusing sheet with anti-static function.
Destatic groove 308 and can also there is heat insulation function, for keeping the temperature of electrically conducting transparent liquid.Destatic groove 308 by wire ground connection, guarantee that electrically conducting transparent liquid is wherein zero potential.
The surface of the 4th roll 307, and flat sheet will apply the surface of electrically conducting transparent thin layer, all comparatively coarsely processed, increase surperficial adhesiveness.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an antistatic light diffusing sheet, is characterized in that, comprises the transparent resin layer and the electrically conducting transparent thin layer that stack gradually; Described transparent resin layer comprises transparent resin base material and doping diffusion particle wherein, and described diffusion particle is dispersed to be present in described transparent resin base material; Described electrically conducting transparent thin layer is ITO indium oxide base electrically conducting transparent thin layer, or AZO zinc-oxide-base transparent electrically conductive layer.
2. antistatic light diffusing sheet as claimed in claim 1, is characterized in that, described electrically conducting transparent thin layer is positioned at incidence surface or the exiting surface of described light diffusing sheet.
3. antistatic light diffusing sheet as claimed in claim 1, is characterized in that, described transparent resin base material is polycarbonate, or polymethyl methacrylate, or polystyrene.
4. a manufacture method for antistatic light diffusing sheet as claimed in claim 1, is characterized in that, comprising:
The first step, heats described transparent resin base material and doping light diffusing agent wherein to molten condition, then is extruded into flat sheet by exit wound of bullet;
Second step, flat sheet reaches needed thickness described in rolling; By running roller, down transmit again, progressively cooling;
The 3rd step, 1/3rd the position that declined of the temperature in the temperature of described flat sheet from described exit wound of bullet place applies electrically conducting transparent thin layer on a surface of described flat sheet.
5. the manufacture method of antistatic light diffusing sheet as claimed in claim 4, is characterized in that, in described second step, also processing the surface that applies electrically conducting transparent thin layer in described flat sheet is coarse surface.
6. the manufacture method of antistatic light diffusing sheet as claimed in claim 5, is characterized in that, also comprises the step of crosscut limit and perpendicular trimming after described the 3rd step.
7. a manufacturing installation for antistatic light diffusing sheet as claimed in claim 1, comprises that the described transparent resin base material of heating and doping light diffusing agent are wherein to the blast furnace of molten condition; The transparent resin base material of described molten condition and doping light diffusing agent are wherein extruded into the exit wound of bullet parts of flat sheet; Be positioned near described exit wound of bullet parts, three cover rolls of flat sheet described in rolling; And the running roller that down transmits described flat sheet; It is characterized in that, also comprise the 4th roll and the static groove that are arranged between the running roller that down transmits described flat sheet, in described static groove, have electrically conducting transparent liquid, described the 4th roll contacts a surface of described flat sheet, partly immerses in described electrically conducting transparent liquid simultaneously.
8. the manufacturing installation of antistatic light diffusing sheet as claimed in claim 7, is characterized in that, described static groove has heat insulation function.
9. the manufacturing installation of antistatic light diffusing sheet as claimed in claim 8, is characterized in that, the above earth potential of described static groove is zero.
10. the manufacturing installation of antistatic light diffusing sheet as claimed in claim 7, is characterized in that, the temperature that described the 4th roll and static groove are positioned at described flat sheet is than the temperature at described exit wound of bullet parts place 1/3rd the position that declined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179583.9A CN103941317B (en) | 2014-04-30 | 2014-04-30 | Antistatic light diffusing sheet and manufacturing method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179583.9A CN103941317B (en) | 2014-04-30 | 2014-04-30 | Antistatic light diffusing sheet and manufacturing method and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103941317A true CN103941317A (en) | 2014-07-23 |
| CN103941317B CN103941317B (en) | 2016-01-20 |
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| CN201410179583.9A Active CN103941317B (en) | 2014-04-30 | 2014-04-30 | Antistatic light diffusing sheet and manufacturing method and apparatus thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950750A (en) * | 2017-03-20 | 2017-07-14 | 青岛骐骥光电科技有限公司 | A kind of quantum dot spreads plate producing process |
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| JP2006133528A (en) * | 2004-11-05 | 2006-05-25 | Takiron Co Ltd | Anti-static light diffusion sheet |
| CN1993633A (en) * | 2004-08-02 | 2007-07-04 | 富士胶片株式会社 | Optical film, producing method therefor, polarizing plate and image display apparatus |
| TW200736757A (en) * | 2006-03-22 | 2007-10-01 | Exploit Technology Co Ltd | A diffusion element and method of making the same |
| TW201013230A (en) * | 2008-06-05 | 2010-04-01 | Sumitomo Chemical Co | Light diffusing plate having antistatic properties |
| CN202256726U (en) * | 2011-09-22 | 2012-05-30 | 无锡睿涛光电科技有限公司 | Anti-static optical thin film |
| CN103293575A (en) * | 2013-05-10 | 2013-09-11 | 张家港康得新光电材料有限公司 | Diffusion and brightness enhancement film and method for manufacturing same |
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2014
- 2014-04-30 CN CN201410179583.9A patent/CN103941317B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993633A (en) * | 2004-08-02 | 2007-07-04 | 富士胶片株式会社 | Optical film, producing method therefor, polarizing plate and image display apparatus |
| JP2006133528A (en) * | 2004-11-05 | 2006-05-25 | Takiron Co Ltd | Anti-static light diffusion sheet |
| TW200736757A (en) * | 2006-03-22 | 2007-10-01 | Exploit Technology Co Ltd | A diffusion element and method of making the same |
| TW201013230A (en) * | 2008-06-05 | 2010-04-01 | Sumitomo Chemical Co | Light diffusing plate having antistatic properties |
| CN202256726U (en) * | 2011-09-22 | 2012-05-30 | 无锡睿涛光电科技有限公司 | Anti-static optical thin film |
| CN103293575A (en) * | 2013-05-10 | 2013-09-11 | 张家港康得新光电材料有限公司 | Diffusion and brightness enhancement film and method for manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106950750A (en) * | 2017-03-20 | 2017-07-14 | 青岛骐骥光电科技有限公司 | A kind of quantum dot spreads plate producing process |
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| CN103941317B (en) | 2016-01-20 |
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Address after: 523000 Heyuan, Guangdong Jiangdong new district, Linjiang Town, Lian Xin Village, Po Po, Henan Road, Lang Lang Industrial Park first, second Patentee after: Guangdong Xuan Long Industrial Co., Ltd. Address before: 523000 A 1 1 and 2 floor, No. 352 Xiangyang Road, Shigu community, Tangxia Town, Dongguan, Guangdong Patentee before: Dongguan Xuan Lang Industrial Company Limited |