CN101639586A - Preparation method of brightened optical film - Google Patents
Preparation method of brightened optical film Download PDFInfo
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- CN101639586A CN101639586A CN200910194534A CN200910194534A CN101639586A CN 101639586 A CN101639586 A CN 101639586A CN 200910194534 A CN200910194534 A CN 200910194534A CN 200910194534 A CN200910194534 A CN 200910194534A CN 101639586 A CN101639586 A CN 101639586A
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- embossing
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Abstract
The invention relates to the technical field of optical films, in particular to a preparation method of a brightened optical film. The preparation method is characterized by comprising the following technological steps: stretching a raw coiled material driven by a motor to operate, stripping a protective film to expose a substrate, sending the substrate to a scraper-type coater to coat an opticalfilm material; then, carrying out infrared predrying in a dryer with an additional infrared lamp under the conditions that the infrared illumination power is 1000 mJ, the predrying time is 5-10s, andthe ventilation rate in drying is 30m<3>/min; adopting a rubber embossing roller to emboss in an embossing device, adopting a UV lamp with the power of 600-800 mJ to dry and shape; pasting a transparent protective film; and coiling. Compared with the prior art, the invention has strong suitability by adopting a cutting tool of the scraper-type coater, greatly improves the product-curing effect because a large wrapping angle is formed between the substrate and the output end of the embossing roller and saves energy; embossing and UV shaping are simultaneously carried out so that patterns on the substrate surface are difficult to deform.
Description
[technical field]
The present invention relates to the blooming technical field, relate in particular to a kind of preparation method of brightened optical film.
[background technology]
Along with the photoelectricity development of science and technology, the application of blooming piece is more and more indispensable, especially LCD blooming piece, blooming piece all is the key part and component of LCD backlight module all the time, and the main effect of the blooming piece of backlight module is all once to increase target zone angular brightness, raising light source service efficiency, hoisting module.
At present the technology of preparation blooming piece mainly is first coating in the industry, embossing then, and rolling behind the diaphragm is sticked in UV typing more at last.Because the base material that preparation is adopted during blooming piece generally all contains fugitive constituent, therefore adopt directly this technology of embossing of coating back, cause easily in the diaphragm after the embossing and produce bubble, cavity; And this technology requires very highly for coating institute's glue that uses, because in the embossing type-approval process, fugitive constituent produces volatilization in the glue under the UV irradiate light, and then cools off on knurling rolls, and formation liquid steeps the shape spot, influences the embossing effect; Glue is in liquid state after coating simultaneously, in the unbalanced longitudinal pulling force that in gravity, material surface tension force and the mechanical tension control system that curls, produces, it is inhomogeneous to be easy to generate vertical coating thickness, causes the not full phenomenon of product embossing easily in road, back embossed technology.
In addition, general spin-coating method, slot coated method, the vertical flowing method etc. of adopting of coating in the technology of existing preparation blooming piece, wherein spin-coating method is easy to generate vertical zebra-stripe influences the full degree of embossing; And the slot coated method requires to be difficult to reach for middle large format coating, and for different glue bad adaptability, and must add the WRRM auxiliary agent that reduces dope viscosity, influential to end product quality; The vertical flowing method coating also needs to add WRRM.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, on original technology basis, increased the predrying technology of infrared ray, and embossed technology and setting process are carried out simultaneously, and the preparation method of a kind of brightened optical film of design.
For achieving the above object, the present invention proposes a kind of preparation method of brightened optical film, it is characterized in that adopting following processing step: (1) coating machine coating: will launch by the raw material coiled material of motor-driven running, and divest the base material that exposes behind the diaphragm and send into scraper type coating machine coating optical film material; (2) infrared light is predrying: the base material of coated optical material is carried out infrared light in adding the dryer of infrared lamp predrying, and the power of infrared radiation is 1000mJ, and the predrying time is 5-10s, and the rate of venting when dry is 30m
3/ min; (3) embossing and UV lamp drying and shaping: adopt the embossing of rubber knurling rolls simultaneously in embossing device, adopt the UV lamp to carry out drying and shaping, the power of UV lamp is 600-800mJ; (4) paste transparent protective film; (5) rolling.
Described base material adopts transmitting substrate or light tight base material or high molecular polymer.
The drive motor of control raw material coiled material, embossing and rolling all adopts synchronous motor, and synchronous motor is by system controlled by computer.
The present invention compares with prior art possesses following advantage:
1, adopt scraper type coating machine coating optical film material, can adjust cutter structure as required at any time, adaptability is strong, is applicable to very much present full-bodied optical cement, and cost is far below slit simultaneously;
2, knurling rolls adopt the rubber material to increase decorative pattern texture and plumpness; Base material and knurling rolls output terminal form big cornerite, have strengthened exposure area, improve overall UV photosensitizer energy absorption window, make the products solidifying effect greatly improve, and reduce the UV of unit irradiation power simultaneously, improve the UV lamp tube service life, energy savings;
3, embossing and UV typing is carried out synchronously, has not only improved efficient, and has made the substrate surface decorative pattern not yielding, reaches best optical design angle;
4, adopt system controlled by computer coiled material, embossing, rolling to carry out synchronously, not only help to realize automation mechanized operation, and be convenient to control the speed of whole technology, thereby improved production efficiency according to the needs of unlike material.
[description of drawings]
Fig. 1 is the preparation flow figure of existing brightened optical film.
Fig. 2 is a process flow diagram of the present invention.
Fig. 3 is the base material cornerite synoptic diagram of knurling rolls output terminal among the present invention.
Referring to accompanying drawing 3,1 is last knurling rolls in the knurling rolls; 2 is the support roller; 3 is base material.
Appointment Fig. 1 is a Figure of abstract.
[embodiment]
Below in conjunction with embodiment the present invention is further elaborated.
The base material of rolling of coating usefulness divested send into the scraper type coating machine by the support roller with the conveying device of deflector roll formation behind the diaphragm and be coated with, pour into the respective optical membrane material that will be coated with in the coating machine in advance, application rate is controlled at 3-15m/s; General base material can be selected PVC, PET, acryl resin etc. for use.
Be conveyed into then by under the infrared light pre-dryers of forming adding some infrared lamps under the dryer air port, it is predrying that the base material of coated optical material is carried out infrared light, the power of infrared radiation is 1000mJ, the predrying time is 5-10s, the rate of venting of the wind passage mouth when dry is 30m3/min, the substrate surface that the coating of flowing through of the hot blast in the dryer air port is finished makes the top layer of substrate surface glue form a uniform cured film.
Embossing and UV lamp drying and shaping: in embossing device, adopt the rubber knurling rolls to improve the plumpness and the texture of decorative pattern, take blame for others power that the rubber knurling rolls are applied about 1KG when carrying out embossing by the air pressure of knurling rolls tops, adopt reflective prism that the UV lamp is reflected into up and down between the knurling rolls, base material is carried out drying and shaping, the power of UV lamp is 600-800mJ, by raising the outer set support roller height of knurling rolls output terminal, make the base material of knurling rolls output terminal form 60 ° wrap angle sigma, referring to accompanying drawing 3.In embossing, finalize the design like this, guarantee that the new product decorative pattern can reach best optics design angle, in addition by big cornerite, strengthened exposure area, improve overall UV photosensitizer energy absorption window, make the products solidifying effect greatly improve, reduce the UV of unit irradiation power simultaneously, improve the UV lamp tube service life, energy savings.
Stick transparent protective film after embossing is stereotyped again, promptly obtain brightened optical film, get final product after the rolling finished product.
The drive motor of control raw material coiled material, embossing and rolling all adopts synchronous motor, and synchronous motor has improved the automaticity of producing by system controlled by computer.
Claims (3)
1. the preparation method of a brightened optical film, it is characterized in that adopting following processing step: (1) coating machine coating: will launch by the raw material coiled material of motor-driven running, and divest the base material that exposes behind the diaphragm and send into scraper type coating machine coating optical film material; (2) infrared light is predrying: the base material of coated optical material is carried out infrared light in adding the dryer of infrared lamp predrying, and the power of infrared radiation is 1000mJ, and the predrying time is 5-10s, and the rate of venting when dry is 30m
3/ min; (3) embossing and UV lamp drying and shaping: adopt the embossing of rubber knurling rolls simultaneously in embossing device, adopt the UV lamp to carry out drying and shaping, the power of UV lamp is 600-800mJ; (4) paste transparent protective film; (5) rolling.
2. the preparation method of a kind of brightened optical film as claimed in claim 1 is characterized in that: described base material employing transmitting substrate or light tight base material or high molecular polymer.
3. as the preparation method of claim 1 a kind of brightened optical film as claimed in claim 1, it is characterized in that: the drive motor of control raw material coiled material, embossing and rolling all adopts synchronous motor, and synchronous motor is by system controlled by computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910194534A CN101639586A (en) | 2009-08-25 | 2009-08-25 | Preparation method of brightened optical film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910194534A CN101639586A (en) | 2009-08-25 | 2009-08-25 | Preparation method of brightened optical film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101639586A true CN101639586A (en) | 2010-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910194534A Pending CN101639586A (en) | 2009-08-25 | 2009-08-25 | Preparation method of brightened optical film |
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| CN (1) | CN101639586A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105636A (en) * | 2011-09-27 | 2013-05-15 | 爱思开哈斯显示用薄膜有限公司 | Method for manufacturing high brightness optical sheet |
| CN111212538A (en) * | 2020-02-03 | 2020-05-29 | Oppo广东移动通信有限公司 | Shell machining method, shell and electronic equipment |
-
2009
- 2009-08-25 CN CN200910194534A patent/CN101639586A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105636A (en) * | 2011-09-27 | 2013-05-15 | 爱思开哈斯显示用薄膜有限公司 | Method for manufacturing high brightness optical sheet |
| CN103105636B (en) * | 2011-09-27 | 2016-08-03 | 爱思开哈斯显示用薄膜有限公司 | For the method manufacturing high brightness optical plate |
| CN111212538A (en) * | 2020-02-03 | 2020-05-29 | Oppo广东移动通信有限公司 | Shell machining method, shell and electronic equipment |
| CN111212538B (en) * | 2020-02-03 | 2021-05-07 | Oppo广东移动通信有限公司 | Shell machining method, shell and electronic equipment |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100203 |