CN102520465B - Preparation method of optical film - Google Patents
Preparation method of optical film Download PDFInfo
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- CN102520465B CN102520465B CN201110354874.3A CN201110354874A CN102520465B CN 102520465 B CN102520465 B CN 102520465B CN 201110354874 A CN201110354874 A CN 201110354874A CN 102520465 B CN102520465 B CN 102520465B
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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 manufacture method of optical thin film, particularly at display function film, as the film using in the production of the products such as prism film, anti-dazzling film, diffusion barrier and electronic product decorating film (IML).
Background technology
In recent years, along with popularizing of the electronic products such as notebook computer, LCD TV, mobile phone, the demand of LCD panel increases year by year, optical thin film in LCD panel increases fast as consumptions such as bright enhancement film, anti-dazzling film, diffusion barriers, the manufacture method of known optical thin film conventionally adopt melt extrude, coating composition, heated drying or ultraviolet light polymerization, the shortcomings such as this preparation method's ubiquity complex process, energy consumption is high, efficiency is low, yield rate is low, contaminated environment.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of optical thin film, and the method technique is simple, low cost of manufacture, energy-conserving and environment-protective.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A preparation method for optical thin film, it carries out as follows:
A. feed;
B. coating is supplied with: by feeding device, solvent-free photosensitive coating resin is dripped and drenched in resin film surface or guide roller surface;
C. roll: under the rolling of two deflector rolls, drip the solvent-free photosensitive coating resin drenching 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 to be cured the solvent-free photosensitive coating resin after rolling, make its firm attachment on resin film;
F. rolling, obtains optical thin film.
A preferred version, above-mentioned feeding device is above the first deflector roll and the second deflector roll two rollers, between the first deflector roll and the vertical center line of the second deflector roll.
A preferred version, the width a of above-mentioned feeding device is less than the width of resin film.
A preferred version, above-mentioned feeding device adopts multiple branch circuit manifold configuration, and coating distribution openings is provided with flow control valve.
A preferred version, above-mentioned ultra-violet curing device is positioned at the below of the second deflector roll, and preferably ultra-violet curing device arc shooting is in the below of the second deflector roll.
A preferred version, above-mentioned ultra-violet curing device arranges 2～8 ultraviolet tubes, preferably 3～5 ultraviolet tubes.
Compared with prior art, there is following advantage in the present invention:
1. in photosensitive coating resin of the present invention, do not contain solvent, need not carry out heat drying processing, can save the energy, significantly reduce cost, reduced the health hazard of solvent to environment and operating personnel, energy-conserving and environment-protective.
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. in the present invention, adopt surface with the roller of micromechanism, make the performances such as replica, surface gloss, transmitance of surface microstructure of the film of moulding be better than classic method, product becomes rate high, good in economic efficiency.
4. application of the present invention is wide, is applicable to the manufacture of the bloomings such as prism film, anti-dazzling film, diffusion barrier or electronic product decorating film (IML).
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
Fig. 2 is that forming process face of the present invention changes and control procedure schematic diagram.
Fig. 3 is the structural representation of feeding device of the present invention.
In figure, each label list is shown: feed-1; Resin film-2; The first deflector roll-3; The 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; The first deflector roll 3 and the second deflector roll 4 gaps--d; Feeding device width--a.
Embodiment
In the present invention, solvent-free photosensitive coating resin is the surface at surperficial or second deflector roll 4 of resin film 2 by 6 pouring of feeding device mechanism, and along with the rotation of the first deflector roll 3 and the second deflector roll 4, coating converges in the first deflector roll 3 and the second deflector roll 4 cracks and forms hydrops 7; Along with the rotation of the first deflector roll 3 and the second deflector roll 4 rolls, the air that solvent-free photosensitive coating resin replacement resin film 2 in hydrops 7 and the second deflector roll are 4, and fill up the microstructure hole of the second deflector roll 4, make the surface micro-structure of the second deflector roll 4 be transferred to the surface of resin film.
In order better to control coating, supply with, feeding device 6 of the present invention has adopted 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, for controlling the flow of coating, the total flow Q that coating is supplied with is calculated as follows:
Q≧L×V×D
In formula: Q represents flow (ml/min), D represents precoating wet thickness (μ m), and L represents pre-coating fabric width (m), and V represents Coating Speed (m/min).
The shortcomings such as flow meets the volume that coating is sprawled in unit area volume is slightly larger than hole in roller 4 unit areas, and liquid supply rate will if air residual appears in the very few process of rolling that easily causes of coating, cause product to turn white less times greater than calculated value, and glossiness is low; If settling off, occurs that in the process of rolling coating overflows to both sides, cause the adhesion of coating polluted product or resin film and roller.A pouring for coating can be dripped pouring continuously, also can be interrupted to drip and drench, as long as can guarantee, in the crack of the first deflector roll 3 and the second deflector roll 4, has micro-hydrops.
The width a of coating feeding device 6 is less than the width of resin film.
In the present invention, the first deflector roll 3 can adopt metal deflector roll or rubber guide rollers; The second deflector roll 4 adopts metal material deflector roll, after fine-grinding and polishing is processed, according to the performance requirement of product, process its surface micro-structure, the inside of roller can be designed with cool cycles passage, logical cold water or other cooling mediums during work, with the temperature of control roll, enhance product performance.Gap d between the first deflector roll 3 and the second deflector roll 4 can be adjusted according to the feature of the thickness of product and coating.
When rolling, below the 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, in the present invention owing to being to be cured when rolling, therefore must use no-solvent ultraviolet curing cold coating, if use the ultraviolet-curing paint that contains solvent, solvent has little time volatilization, can cause and solidify not exclusively or degradation disadvantage under apparent mass.Paint film surface after solidifying keeps the micromechanism of the second deflector roll 4, and firm attachment is on resin film
The coating that the product the present invention relates to adopts is solvent-free UV-cured resin coating, produces the coating of the reactions such as polymerization, crosslinked and grafting under ultraviolet irradiation.In the present invention, owing to being to be cured, therefore must use no-solvent ultraviolet curing cold coating in moulding, if use the ultraviolet-curing paint that contains solvent, solvent has little time volatilization, can cause and solidify not exclusively or degradation disadvantage under apparent mass.
Described resin film 2 is transparent, and preferably clear degree is more than 85% optical thin film, and most preferably transparency is more than 95% optical thin film, comprises PET, PMMA, PEN, TAC etc., preferably PET.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
In the present embodiment, use fabric width 1330mm, 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, calculates according to Q=L * V * D is theoretical, and gained flow is 221.2ml/min.
BOPET film is by transmitting continuously for roll unit 1, utilize feeding device 6 that solvent-free photosensitive coating resin is laterally evenly dripped to drench in the crack of rubber the first deflector roll 3 and metal the second deflector roll 4 according to the flow of 225ml/min (a little more than theoretical calculated amount) and form coating hydrops, under the rolling of the first deflector roll 3 and the second deflector roll 4, coating fully contacts with BOPET film, coating is full of the microstructure hole of the second deflector roll 4, and the microcosmic projection on while the second deflector roll 4 surfaces is transferred to BOPET film surface and forms little pit; When rolling, below the second deflector roll 4, the BOPET film of arc shooting after 5 pairs of ultra-violet curing devices that the ultraviolet lamp tube by 4 1300mm forms and rolling imposes ultraviolet ray and irradiates, make coating firm attachment on BOPET film, rolling, obtains surface with the optical thin film of micromechanism.
In embodiment, the feed width of feeding device 6 is compared with the little 200mm of the width of BOPET film, i.e. each little 100mm of both sides.
Embodiment 2
In the present embodiment, use fabric width 1330mm, 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, calculates according to Q=L * V * D is theoretical, and gained flow is 221.2ml/min;
PET film is by transmitting continuously for roll unit 1, utilize feeding device 6 that solvent-free photosensitive coating resin is laterally evenly dripped to film resin 2 surfaces of drenching at clad metal the first deflector roll 3 according to the flow of 225ml/min (a little more than theoretical calculated amount), it is 141 μ m that gap d is set between roller 3 and roller 4, along with the rotation of the first deflector roll 3 and the second deflector roll 4, coating converges in the first deflector roll 3 and the second deflector roll 4 cracks and forms hydrops; Under the rolling of the first deflector roll 3 and the second deflector roll 4, coating fully contacts with PET film, and coating is full of the microstructure hole of the second deflector roll 4, and the microcosmic projection on while the second deflector roll 4 surfaces is transferred to PET film surface and forms little pit; When rolling, below the second deflector roll 4, the PET film of arc shooting after 5 pairs of ultra-violet curing devices that the ultraviolet lamp tube by 8 1300mm forms and rolling imposes ultraviolet ray and irradiates, make coating firm attachment on BOPET film, rolling, obtains surface with the optical thin film of micromechanism.
In embodiment, the feed width of feeding device 6 is compared with the little 150mm of the width of PET film, i.e. each little 75mm of both sides.
Embodiment 3
In the present embodiment, use fabric width 1330mm, 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, calculates according to Q=L * V * D is theoretical, and gained flow is 221.2ml/min.
PET film is by transmitting continuously for roll unit 1, utilize feeding device 6 that solvent-free photosensitive coating resin is laterally evenly dripped to the surface of drenching at the second deflector roll 4 according to the flow of 225ml/min (a little more than theoretical calculated amount), it is 204 μ m that gap d is set between roller 3 and roller 4, along with the rotation of the first deflector roll 3 and the second deflector roll 4, coating converges in the first deflector roll 3 and the second deflector roll 4 cracks and forms hydrops; Under the rolling of the first deflector roll 3 and the second deflector roll 4, coating fully contacts with PET film, and coating is full of the microstructure hole of the second deflector roll 4, and the microcosmic projection on while the second deflector roll 4 surfaces is transferred to PET film surface and forms little pit; When rolling, below the second deflector roll 4, the PET film of arc shooting after 5 pairs of ultra-violet curing devices that the ultraviolet lamp tube by 3 1300mm forms and rolling imposes ultraviolet ray and irradiates, make coating firm attachment on PET film, rolling, obtains surface with the optical thin film of micromechanism.
In embodiment, the feed width of feeding device 6 is compared with the little 100mm of the width of PET film, i.e. each little 50mm of both sides.
Embodiment 4
In the present embodiment, use fabric width 1330mm, 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, calculates according to Q=L * V * D is theoretical, and gained flow is 132ml/min.
PET film is by transmitting continuously for roll unit 1, utilize feeding device 6 that solvent-free photosensitive coating resin is laterally evenly dripped and drenched at PET film surface according to the flow of 135ml/min (a little more than theoretical calculated amount), it is 260 μ m that gap d is set between roller 3 and roller 4, along with the rotation of the first deflector roll 3 and the second deflector roll 4, coating converges in the first deflector roll 3 and the second deflector roll 4 cracks and forms hydrops; Under the rolling of the first deflector roll 3 and the second deflector roll 4, coating fully contacts with PET film, and coating is full of the microstructure hole of the second deflector roll 4, and the microcosmic projection on while the second deflector roll 4 surfaces is transferred to PET film surface and forms little pit; When rolling, below the second deflector roll 4, the PET film of arc shooting after 5 pairs of ultra-violet curing devices that the ultraviolet lamp tube by 5 1300mm forms and rolling imposes ultraviolet ray and irradiates, make coating firm attachment on PET film, rolling, obtains surface with the optical thin film of micromechanism.
In embodiment, the feed width of feeding device 6 is compared with the little 200mm of the width of PET film, i.e. each little 100mm of both sides.
Embodiment 5
In the present embodiment, use fabric width 1330mm, 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, calculates according to Q=L * V * D is theoretical, and gained flow is 66ml/min.
PET film is by transmitting continuously for roll unit 1, utilize feeding device 6 that solvent-free photosensitive coating resin is laterally evenly dripped to the surface of drenching at the second deflector roll 4 according to the flow of 70ml/min (a little more than theoretical calculated amount), it is 105 μ m that gap d is set between roller 3 and roller 4, along with the rotation of the first deflector roll 3 and the second deflector roll 4, coating converges in the first deflector roll 3 and the second deflector roll 4 cracks and forms hydrops; Under the rolling of the first deflector roll 3 and the second deflector roll 4, coating fully contacts with PET film, and coating is full of the microstructure hole of the second deflector roll 4, and the microcosmic projection on while the second deflector roll 4 surfaces is transferred to PET film surface and forms little pit; When rolling, below the second deflector roll 4, the PET film of arc shooting after 5 pairs of ultra-violet curing devices that the ultraviolet lamp tube by 2 1300mm forms and rolling imposes ultraviolet ray and irradiates, make coating firm attachment on PET film, rolling, obtains surface with the optical thin film of micromechanism.
In embodiment, the feed width of feeding device 6 is compared with the little 200mm of the width of PET film, i.e. each little 100mm of both sides.
Claims (4)
1. a preparation method for optical thin film, is characterized in that, it comprises the steps:
A. feed;
B. coating is supplied with: by feeding device (6), solvent-free photosensitive coating resin is dripped and drenched on resin film (2) surface or the second deflector roll (4) surface;
C. roll: under the rolling of the first deflector roll (3) and deflector roll (4), drip to drench on resin film (2) surface or the solvent-free photosensitive coating resin on deflector roll (4) surface fills up the microstructure hole of 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) to be cured the solvent-free photosensitive coating resin after rolling, make its firm attachment on resin film (2);
F. rolling, obtains optical thin film;
Described feeding device (6) is positioned between the first deflector roll (3) and the second deflector roll (4) two roller tops, the first deflector roll (3) and the vertical center line of the second deflector roll (4);
Described ultra-violet curing device (5) is positioned at the below of the second deflector roll (4);
Described feeding device (6) adopts 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), and for controlling the flow of coating, the total flow Q that coating is supplied with is calculated as follows:
Q≧L×V×D，
In formula: Q represents flow (ml/min), D represents precoating wet thickness (μ m), and L represents pre-coating fabric width (m), and V represents Coating Speed (m/min).
2. preparation method according to claim 1, is characterized in that, the width a of described feeding device (6) is less than the width of resin film (2).
3. preparation method according to claim 2, is characterized in that, described ultra-violet curing device (5) arc shooting is in the below of the second deflector roll (4).
4. preparation method according to claim 3, is characterized in that, described ultra-violet curing device (5) is provided with 2～8 ultraviolet tubes.
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| CN201110354874.3A CN102520465B (en) | 2011-11-10 | 2011-11-10 | Preparation method of optical film |
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| CN201110354874.3A CN102520465B (en) | 2011-11-10 | 2011-11-10 | Preparation method of optical film |
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| CN102520465B true CN102520465B (en) | 2014-07-30 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| JP2007185882A (en) * | 2006-01-13 | 2007-07-26 | Fujifilm Corp | Thermoplastic resin film and its manufacturing process |
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| JP2009134190A (en) * | 2007-11-30 | 2009-06-18 | Sumitomo Chemical Co Ltd | Method of manufacturing polarizing plate |
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| JP4506733B2 (en) * | 2005-09-05 | 2010-07-21 | ソニー株式会社 | Manufacturing method of optical film |
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| 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 |
| 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 |
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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 |
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