CN102520465A - Preparation method of optical film - Google Patents
Preparation method of optical film Download PDFInfo
- Publication number
- CN102520465A CN102520465A CN2011103548743A CN201110354874A CN102520465A CN 102520465 A CN102520465 A CN 102520465A CN 2011103548743 A CN2011103548743 A CN 2011103548743A CN 201110354874 A CN201110354874 A CN 201110354874A CN 102520465 A CN102520465 A CN 102520465A
- Authority
- CN
- China
- Prior art keywords
- deflector roll
- film
- rolling
- preparation
- solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides a preparation method of an optical film. The method comprises the following steps: a. supplying a film; b. supplying paint: solvent-free photosensitive resin paint is dripped on a resin film surface or a second guide roller surface through a material feed apparatus; c. rolling: under the rolling of a first guide roller and a second guide roller, the solvent-free photosensitive resin paint which is dripped on the resin film surface or the second guide roller surface fills up a microstructure cavity of the second guide roller, and a surface microstructure of the second guide roller is transferred to a surface of a resin film; d. carrying out ultraviolet solidification: at the same time of rolling, an ultraviolet solidification device is utilized to carry out solidification on the rolled solvent-free photosensitive resin paint so that the paint is firmly attached on the resin film; e. rolling up: the optical film is obtained. The method has the advantages of simple process, low manufacture cost, energy saving and environmental protection, and can be widely applied to the production of optical films such as a prism film, an anti-dazzle film, a diffusion film, an electronic product decoration film and the like.
Description
Technical field
The present invention relates to a kind of manufacturing approach of optical thin film, particularly use function film, the film that uses in the production like prism film, anti-dazzling film, diffusion barrier and electronic product decorating film products such as (IML) at display.
Background technology
In recent years; Along with popularizing of electronic products such as notebook computer, LCD TV, mobile phone; The demand of LCD panel increases year by year; Consumptions such as optical thin film in the LCD panel such as bright enhancement film, anti-dazzling film, diffusion barrier increase fast, the manufacturing approach of known optical thin film usually adopt melt extrude, coating composition, heated drying or ultraviolet light polymerization, this preparation method's ubiquity complex process, high, the shortcomings such as efficient is low, yield rate is low, contaminated environment of energy consumption.
Summary of the invention
The technical matters that the present invention will solve provides a kind of preparation method of optical thin film, and this method technology is simple, low cost of manufacture, energy-conserving and environment-protective.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of preparation method of optical thin film, it carries out as follows:
A. feed;
B. coating is supplied with: through feeding device solvent-free photosensitive coating resin is dripped pouring in resin film surface or guide roller surface;
C. roll: under the rolling of two deflector rolls, drip the solvent-free photosensitive coating resin that drenches on resin film surface or roller surface, fill up the microstructure hole of deflector roll, the surface micro-structure of deflector roll is transferred to the surface of resin film;
D. ultra-violet curing: when rolling, utilize ultra-violet curing device that the solvent-free photosensitive coating resin after rolling is cured, make its firm attachment on the resin film;
F. rolling obtains optical thin film.
A kind of preferred version, above-mentioned feeding device is above first deflector roll and second deflector roll, two rollers, between the vertical center line of first deflector roll and second deflector roll.
A kind of preferred version, the width a of above-mentioned feeding device is less than the width of resin film.
A kind of preferred version, above-mentioned feeding device adopts the multiple branch circuit manifold configuration, and the coating distribution openings is provided with flow control valve.
A kind of preferred version, above-mentioned ultra-violet curing device is positioned at the below of second deflector roll, and preferred ultra-violet curing device arc shooting is in the below of second deflector roll.
A kind of preferred version, above-mentioned ultra-violet curing device are provided with 2～8 ultraviolet tubes, preferred 3～5 ultraviolet tubes.
Compared with prior art, there is following advantage in the present invention:
1. do not contain solvent in the photosensitive coating resin that the present invention adopted, need not carry out heat drying and handle, can save the energy, significantly reduce cost, reduced the health hazard of solvent, energy-conserving and environment-protective environment and operating personnel.
2. the present invention replaces known coating process with a pouring, compaction technology, has improved the horizontal homogeneity of paint thickness, has saved the input of equipment.
3. adopt the roller of surface with micromechanism among the present invention, make the performances such as replica property, surface gloss, transmitance of surface microstructure of the film of moulding be superior to classic method, product becomes rate high, and is good in economic efficiency.
4. application of the present invention is wide, is applicable to the manufacturing of prism film, anti-dazzling film, diffusion barrier or electronic product decorating film bloomings such as (IML).
Description of drawings
Fig. 1 is a principle of the invention synoptic diagram.
Fig. 2 is that forming process face of the present invention changes and the control procedure synoptic diagram.
Fig. 3 is the structural representation of feeding device of the present invention.
Each label list is shown among the figure: feed-1; Resin film-2; First deflector roll-3; Second deflector roll-4; Ultra-violet curing device-5; Feeding device-6; Hydrops-7; Wrap-up-8; Coating distribution openings-9; Flow control valve 10; First deflector roll 3 and second deflector roll, 4 gaps--d; Feeding device width--a.
Embodiment
Among the present invention; Solvent-free photosensitive coating resin is through the surface of 6 pouring of feeding device mechanism at surperficial or second deflector roll 4 of resin film 2; And along with the rotation of first deflector roll 3 and second deflector roll 4, coating converges in and forms hydrops 7 in first deflector roll 3 and second deflector roll, 4 cracks; Along with the rotation of first deflector roll 3 and second deflector roll 4 rolls; The air that the solvent-free photosensitive coating resin replacement resin film 2 in the hydrops 7 and second deflector roll are 4; And fill up the microstructure hole of second deflector roll 4, make the surface micro-structure of second deflector roll 4 be transferred to the surface of resin film.
For better control coating supply; Feeding device 6 of the present invention has adopted the multiple branch circuit manifold configuration, and arm is provided with coating distribution openings 9, and each coating distribution openings is provided with flow control valve 10; Be used to control the flow of coating, the total flow Q that coating is supplied with is calculated as follows:
Q≧L×V×D
In the formula: Q representes flow (ml/min), and D representes precoating wet thickness (μ m), and L representes pre-coating fabric width (m), and V representes to be coated with the speed of a motor vehicle (m/min).
Shortcomings such as flow satisfies the volume that coating is sprawled in the unit area volume is slightly larger than hole in roller 4 unit areas, and promptly liquid supply rate will be less times greater than calculated value, and to be prone to cause the process of rolling air to occur residual if coating is very few, causes product to turn white, and glossiness is low; If settling off coating occurs and overflows to both sides in the process of rolling, cause the adhesion of coating pollution product or resin film and roller.A pouring of coating can be dripped pouring continuously, also can be interrupted to drip and drench, and in the crack of first deflector roll 3 and second deflector roll 4, micro-hydrops is arranged as long as can guarantee.
The width a of coating feeding device 6 is less than the width of resin film.
Among the present invention, first deflector roll 3 can adopt metal deflector roll or rubber guide rollers; Second deflector roll 4 adopts the metal material deflector roll; After fine-grinding and polishing is handled, require its surface micro-structure of processing according to performance of products, the inside of roller can be designed with the cool cycles passage, logical cold water or other cooling mediums during work; With the temperature of control roll, enhance product performance.Gap d between first deflector roll 3 and second deflector roll 4 can be adjusted according to the thickness of product and the characteristics of coating.
When rolling, below second deflector roll 4, ultra-violet curing device 5 is set, the solvent-free photosensitive coating resin after rolling is cured.Solvent-free photosensitive coating resin produces polymerization, crosslinked and grafting under ultraviolet irradiation; Among the present invention owing to be when rolling, to be cured; Therefore must use the no-solvent ultraviolet curing cold coating; If use the ultraviolet-curing paint that contains solvent, solvent has little time volatilization, can cause to solidify not exclusively or degradation disadvantage under the apparent mass.Paint film surface after the curing keeps the micromechanism of second deflector roll 4, and firm attachment is on the resin film
The coating that product adopted that the present invention relates to is solvent-free UV-cured resin coating, under ultraviolet irradiation, produces the coating of reactions such as polymerization, crosslinked and grafting.Owing to be in moulding, to be cured, therefore must use the no-solvent ultraviolet curing cold coating among the present invention, if use the ultraviolet-curing paint that contains solvent, solvent has little time volatilization, can cause to solidify not exclusively or degradation disadvantage under the apparent mass.
Described resin film 2 is transparent, and the preferably clear degree is the optical thin film more than 85%, and most preferably transparency is the optical thin film more than 95%, comprises PET, PMMA, PEN, TAC etc., preferred PET.
Below in conjunction with specific embodiment the present invention is described further.
Use fabric width 1330mm in the present embodiment, the BOPET film of thickness 125 μ m, precoating thickness 16 μ m, precoating fabric width 1.32m, speed of a motor vehicle 10m/min, according to Q=L * V * D Theoretical Calculation, the gained flow is 221.2ml/min.
The BOPET film is by supplying roll unit 1 to transmit continuously; Utilize feeding device 6 that solvent-free photosensitive coating resin is drenched in the crack of rubber first deflector roll 3 and metal second deflector roll 4 according to laterally even of the flow (a little more than the Theoretical Calculation amount) of 225ml/min and form the coating hydrops; Under the rolling of first deflector roll 3 and second deflector roll 4; Coating fully contacts with the BOPET film; Coating is full of the microstructure hole of second deflector roll 4, and the microcosmic projections on while second deflector roll, 4 surfaces are transferred to the BOPET film surface and form little pit; When rolling; The BOPET film of after 5 pairs of the ultra-violet curing devices of being made up of the ultraviolet lamp tube of 4 1300mm roll in arc shooting below second deflector roll 4 imposes the ultraviolet ray irradiation; Make the coating firm attachment on the BOPET film, rolling obtains the optical thin film that the surface has micromechanism.
Among the embodiment, the feed width of feeding device 6 is than the little 200mm of width of BOPET film, i.e. each little 100mm of both sides.
Use fabric width 1330mm in the present embodiment, the PET film of thickness 125 μ m, precoating thickness 16 μ m, precoating fabric width 1.32m, speed of a motor vehicle 10m/min, according to Q=L * V * D Theoretical Calculation, the gained flow is 221.2ml/min;
The PET film is by supplying roll unit 1 to transmit continuously; Utilize feeding device 6 that solvent-free photosensitive coating resin is drenched film resin 2 surfaces at clad metal first deflector roll 3 according to laterally even of the flow (a little more than the Theoretical Calculation amount) of 225ml/min; It is 141 μ m that gap d is set between roller 3 and the roller 4; Along with the rotation of first deflector roll 3 and second deflector roll 4, coating converges in first deflector roll 3 and second deflector roll, 4 cracks and forms hydrops; Under the rolling of first deflector roll 3 and second deflector roll 4, coating fully contacts with the PET film, and coating is full of the microstructure hole of second deflector roll 4, and the microcosmic projections on while second deflector roll, 4 surfaces are transferred to the PET film surface and form little pit; When rolling; The PET film of after 5 pairs of the ultra-violet curing devices of being made up of the ultraviolet lamp tube of 8 1300mm roll in arc shooting below second deflector roll 4 imposes the ultraviolet ray irradiation; Make the coating firm attachment on the BOPET film, rolling obtains the optical thin film that the surface has micromechanism.
Among the embodiment, the feed width of feeding device 6 is than the little 150mm of width of PET film, i.e. each little 75mm of both sides.
Use fabric width 1330mm in the present embodiment, the PET film of thickness 188 μ m, precoating thickness 16 μ m, precoating fabric width 1.32m, speed of a motor vehicle 10m/min, according to Q=L * V * D Theoretical Calculation, the gained flow is 221.2ml/min.
The PET film is by supplying roll unit 1 to transmit continuously; Utilize feeding device 6 that solvent-free photosensitive coating resin is drenched the surface at second deflector roll 4 according to laterally even of the flow (a little more than the Theoretical Calculation amount) of 225ml/min; It is 204 μ m that gap d is set between roller 3 and the roller 4; Along with the rotation of first deflector roll 3 and second deflector roll 4, coating converges in first deflector roll 3 and second deflector roll, 4 cracks and forms hydrops; Under the rolling of first deflector roll 3 and second deflector roll 4, coating fully contacts with the PET film, and coating is full of the microstructure hole of second deflector roll 4, and the microcosmic projections on while second deflector roll, 4 surfaces are transferred to the PET film surface and form little pit; When rolling; The PET film of after 5 pairs of the ultra-violet curing devices of being made up of the ultraviolet lamp tube of 3 1300mm roll in arc shooting below second deflector roll 4 imposes the ultraviolet ray irradiation; Make the coating firm attachment on the PET film, rolling obtains the optical thin film that the surface has micromechanism.
Among the embodiment, the feed width of feeding device 6 is than the little 100mm of width of PET film, i.e. each little 50mm of both sides.
Use fabric width 1330mm in the present embodiment, the PET film of thickness 250 μ m, precoating thickness 10 μ m, precoating fabric width 1.32m, speed of a motor vehicle 10m/min, according to Q=L * V * D Theoretical Calculation, the gained flow is 132ml/min.
The PET film is by supplying roll unit 1 to transmit continuously; Utilize feeding device 6 that solvent-free photosensitive coating resin is drenched at the PET film surface according to laterally even the dripping of the flow (a little more than the Theoretical Calculation amount) of 135ml/min; It is 260 μ m that gap d is set between roller 3 and the roller 4; Along with the rotation of first deflector roll 3 and second deflector roll 4, coating converges in first deflector roll 3 and second deflector roll, 4 cracks and forms hydrops; Under the rolling of first deflector roll 3 and second deflector roll 4, coating fully contacts with the PET film, and coating is full of the microstructure hole of second deflector roll 4, and the microcosmic projections on while second deflector roll, 4 surfaces are transferred to the PET film surface and form little pit; When rolling; The PET film of after 5 pairs of the ultra-violet curing devices of being made up of the ultraviolet lamp tube of 5 1300mm roll in arc shooting below second deflector roll 4 imposes the ultraviolet ray irradiation; Make the coating firm attachment on the PET film, rolling obtains the optical thin film that the surface has micromechanism.
Among the embodiment, the feed width of feeding device 6 is than the little 200mm of width of PET film, i.e. each little 100mm of both sides.
Use fabric width 1330mm in the present embodiment, the PET film of thickness 100 μ m, precoating thickness 5 μ m, precoating fabric width 1.32m, speed of a motor vehicle 10m/min, according to Q=L * V * D Theoretical Calculation, the gained flow is 66ml/min.
The PET film is by supplying roll unit 1 to transmit continuously; Utilize feeding device 6 that solvent-free photosensitive coating resin is drenched the surface at second deflector roll 4 according to laterally even of the flow (a little more than the Theoretical Calculation amount) of 70ml/min; It is 105 μ m that gap d is set between roller 3 and the roller 4; Along with the rotation of first deflector roll 3 and second deflector roll 4, coating converges in first deflector roll 3 and second deflector roll, 4 cracks and forms hydrops; Under the rolling of first deflector roll 3 and second deflector roll 4, coating fully contacts with the PET film, and coating is full of the microstructure hole of second deflector roll 4, and the microcosmic projections on while second deflector roll, 4 surfaces are transferred to the PET film surface and form little pit; When rolling; The PET film of after 5 pairs of the ultra-violet curing devices of being made up of the ultraviolet lamp tube of 2 1300mm roll in arc shooting below second deflector roll 4 imposes the ultraviolet ray irradiation; Make the coating firm attachment on the PET film, rolling obtains the optical thin film that the surface has micromechanism.
Among the embodiment, the feed width of feeding device 6 is than the little 200mm of width of PET film, i.e. each little 100mm of both sides.
Claims (7)
1. the preparation method of an optical thin film is characterized in that, it comprises the steps:
A. feed;
B. coating is supplied with: through feeding device (6) solvent-free photosensitive coating resin is dripped pouring on resin film (2) surface or second deflector roll (4) surface;
C. roll: under the rolling of first deflector roll (3) and deflector roll (4); Drip and drench the microstructure hole that solvent-free photosensitive coating resin surperficial at resin film (2) or that deflector roll (4) is surperficial fills up deflector roll (4), the surface micro-structure of deflector roll (4) is transferred to the surface of resin film (2);
D. ultra-violet curing: when rolling, utilize ultra-violet curing device (5) that the solvent-free photosensitive coating resin after rolling is cured, make its firm attachment on resin film (2);
F. rolling obtains optical thin film.
2. preparation method according to claim 1 is characterized in that, said feeding device (6) is positioned between the vertical center line of first deflector roll (3) and second deflector roll (4) two rollers top, first deflector roll (3) and second deflector roll (4).
3. preparation method according to claim 1 and 2 is characterized in that, the width a of said feeding device (6) is less than the width of resin film (2).
4. preparation method according to claim 3 is characterized in that, said feeding device (6) adopts the multiple branch circuit manifold configuration, and coating distribution openings (9) is provided with flow control valve (10).
5. preparation method according to claim 4 is characterized in that, said ultra-violet curing device (5) is positioned at the below of second deflector roll (4).
6. preparation method according to claim 5 is characterized in that, said ultra-violet curing device (5) arc shooting is in the below of second deflector roll (4).
7. preparation method according to claim 6 is characterized in that, said ultra-violet curing device (5) is provided with 2～8 ultraviolet tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354874.3A CN102520465B (en) | 2011-11-10 | 2011-11-10 | Preparation method of optical film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110354874.3A CN102520465B (en) | 2011-11-10 | 2011-11-10 | Preparation method of optical film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102520465A true CN102520465A (en) | 2012-06-27 |
| CN102520465B CN102520465B (en) | 2014-07-30 |
Family
ID=46291447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110354874.3A Active CN102520465B (en) | 2011-11-10 | 2011-11-10 | Preparation method of optical film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102520465B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963055A (en) * | 2012-11-06 | 2013-03-13 | 东莞市纳利光学材料有限公司 | Preparation process for anti-dazzle membrane |
| CN103660275A (en) * | 2013-11-29 | 2014-03-26 | 福建省石狮市通达电器有限公司 | Entire roll embossing production process of IML (in mould labeling) film |
| CN105425323A (en) * | 2015-12-17 | 2016-03-23 | 宁波惠之星新材料科技有限公司 | Impressing roller and coating equipment for preparing ultraviolet curing coating |
| CN106863678A (en) * | 2017-03-10 | 2017-06-20 | 常州华日升反光材料有限公司 | Make the device and method thereof of micro-prism type reflecting material |
| CN107797379A (en) * | 2017-02-23 | 2018-03-13 | 常州华威新材料有限公司 | A kind of method that ultraviolet light micro-nano imprint technology prepares drawing film |
| CN114392906A (en) * | 2022-02-07 | 2022-04-26 | 江苏友威科技股份有限公司 | Environment-friendly film hardening UV coating process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534314A (en) * | 2003-03-26 | 2004-10-06 | ��ʿ��Ƭ��ʽ���� | Dazzle reflection preventing film mfg. method and its device, and dazzle reflection preventing film |
| US20070052118A1 (en) * | 2005-09-05 | 2007-03-08 | Sony Corporation | Method of fabricating optical film |
| JP2007185882A (en) * | 2006-01-13 | 2007-07-26 | Fujifilm Corp | Thermoplastic resin film and its manufacturing process |
| CN101231349A (en) * | 2006-08-07 | 2008-07-30 | 罗门哈斯丹麦金融有限公司 | Microstructured film containing polysulfone polymer |
| JP2009134190A (en) * | 2007-11-30 | 2009-06-18 | Sumitomo Chemical Co Ltd | Method of manufacturing polarizing plate |
-
2011
- 2011-11-10 CN CN201110354874.3A patent/CN102520465B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534314A (en) * | 2003-03-26 | 2004-10-06 | ��ʿ��Ƭ��ʽ���� | Dazzle reflection preventing film mfg. method and its device, and dazzle reflection preventing film |
| US20070052118A1 (en) * | 2005-09-05 | 2007-03-08 | Sony Corporation | Method of fabricating optical film |
| JP2007185882A (en) * | 2006-01-13 | 2007-07-26 | Fujifilm Corp | Thermoplastic resin film and its manufacturing process |
| CN101231349A (en) * | 2006-08-07 | 2008-07-30 | 罗门哈斯丹麦金融有限公司 | Microstructured film containing polysulfone polymer |
| JP2009134190A (en) * | 2007-11-30 | 2009-06-18 | Sumitomo Chemical Co Ltd | Method of manufacturing polarizing plate |
| CN101498806A (en) * | 2007-11-30 | 2009-08-05 | 住友化学株式会社 | Method of manufacturing polarizing plate |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963055A (en) * | 2012-11-06 | 2013-03-13 | 东莞市纳利光学材料有限公司 | Preparation process for anti-dazzle membrane |
| CN102963055B (en) * | 2012-11-06 | 2015-10-28 | 东莞市纳利光学材料有限公司 | A kind of antiglare film preparation technology |
| CN103660275A (en) * | 2013-11-29 | 2014-03-26 | 福建省石狮市通达电器有限公司 | Entire roll embossing production process of IML (in mould labeling) film |
| CN105425323A (en) * | 2015-12-17 | 2016-03-23 | 宁波惠之星新材料科技有限公司 | Impressing roller and coating equipment for preparing ultraviolet curing coating |
| CN107797379A (en) * | 2017-02-23 | 2018-03-13 | 常州华威新材料有限公司 | A kind of method that ultraviolet light micro-nano imprint technology prepares drawing film |
| CN106863678A (en) * | 2017-03-10 | 2017-06-20 | 常州华日升反光材料有限公司 | Make the device and method thereof of micro-prism type reflecting material |
| CN114392906A (en) * | 2022-02-07 | 2022-04-26 | 江苏友威科技股份有限公司 | Environment-friendly film hardening UV coating process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102520465B (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102520465B (en) | Preparation method of optical film | |
| CN103235483B (en) | The patterned apparatus and method of large-area nano | |
| CN105015154B (en) | Extrude print-on coating equipment and system | |
| CN102765239A (en) | Releasing film with light releasing force and manufacture method of releasing film | |
| CN204396293U (en) | One is efficiently coated with drying unit | |
| CN113561517B (en) | High-definition thin brightening polyester base film manufacturing process and equipment | |
| CN203881962U (en) | Ultraviolet light curing optic hardened film and device for preparing ultraviolet light curing optic hardened film | |
| CN103149739B (en) | Alignment films preparation method and system | |
| KR100863568B1 (en) | In-line coating method and apparatus using thereof | |
| CN201904042U (en) | Removable high temperature resistant label material | |
| CN103785596A (en) | Method and device for coating of frame sealing adhesives, and display device | |
| KR100859769B1 (en) | In-line coating method and apparatus using thereof | |
| CN204367554U (en) | Extruding print-on coating equipment and system | |
| CN203110468U (en) | Release film with light release force | |
| CN106291785A (en) | Lens arra manufacture method and birefringent lens array | |
| CN102520546A (en) | High-transparent privacy glass | |
| CN201489238U (en) | Double-layered panel ultra-thin LCD device | |
| CN102981192B (en) | A kind of brightness enhancement film and preparation method thereof | |
| CN102778787B (en) | A kind of alignment films solidification equipment and using method thereof | |
| CN203217239U (en) | Large-area nano graphics device | |
| CN204945556U (en) | Utilize the intelligent glass that Polymer Dispersed Liquid Crystal makes | |
| CN105015205B (en) | Extrude print-on coating method | |
| CN102689446A (en) | Manufacturing system for surface-hardened force-bearing plate | |
| CN104289342A (en) | Method and device for coating polyimide | |
| CN202330952U (en) | High-transmittance dimming glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: South Street, new urban lucky 071054 Hebei province Baoding City No. 6 Applicant after: China Lucky Group Corporation Address before: 071054 Kennan street, Hebei, Baoding, No. 6 Applicant before: Chinese Lekai Film Group Co |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINESE LEKAI FILM GROUP CO TO: CHINA LUCKY GROUP CORPORATION |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |