CN103969718A - Diffusion film preparing method - Google Patents
Diffusion film preparing method Download PDFInfo
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- CN103969718A CN103969718A CN201410194873.0A CN201410194873A CN103969718A CN 103969718 A CN103969718 A CN 103969718A CN 201410194873 A CN201410194873 A CN 201410194873A CN 103969718 A CN103969718 A CN 103969718A
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Abstract
Disclosed is a diffusion film preparing method. A diffusion film comprises a core layer and diffusion layers arranged on the two sides of the core layer. During preparation, the core layer is drawn longitudinally through a film longitudinally-drawing machine firstly. The method is characterized by further comprising the steps of preparing a film horizontally-drawing machine and arranging an on-line coating device between the film longitudinally-drawing machine and the film horizontally-drawing machine at the same time, pre-coating diffusion layer coating liquid on the two sides of the core layer treated with longitudinal drawing through the on-line coating device, and then conducting horizontal drawing on the core layer in the film horizontally-drawing machine. According to the diffusion layer coating liquid on-line coating method, complicated procedures adopted in the prior art according to which bidirectional drawing is conducted firstly and then coating is conducted are avoided, bidirectional drawing and coating can be conducted on the same production line, the horizontally-drawing heating process and the diffusion layer coating liquid thermocuring process are integrated in the same area, and equipment cost is saved.
Description
Technical field
The present invention relates to a kind of preparation method of diffusion barrier.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) has become the most general current display technique.Because LCD has the advantages such as environmental protection, low power consuming, low radiation, picture be soft, so LCD will be the main flow display technique in coming few decades.LCD is non-luminiferous display device, need to just can reach Presentation Function by backlight module, so the quality of backlight module performance can directly affect LCD video picture quality.The main member of backlight module comprises: light source, light guide plate, all kinds of blooming piece.
The blooming piece of backlight module mainly comprises three kinds of reflectance coating, diffusion barrier and brightness enhancement film.The Main Function of diffusion barrier is by the light appearing from light guide plate, reaches the effect of atomizing light source by the scattering of diffusion particle.When light passes from diffusion layer, because the difference of the difference of medium refraction index and angle of incidence of light degree, light can reflect, reflection and scattering phenomenon, so diffusion barrier can be revised the effect that light source becomes uniform area light source and reaches optics diffusion.
Existing diffusion barrier preparation technology obtains optical grade base material by two-way stretch, then applies at substrate surface the coating that one deck contains diffusion particle, realizes the function of diffusing light.Existing diffusion barrier preparation technology is generally the Complicated Flow being coated with after first two-way stretch, manufacturing process link complexity.Need to be from the quality of a series of strict final diffusion barriers of process monitoring guarantee such as raw material, two-way stretch, coating.
Summary of the invention
In order to overcome preparation method's the above-mentioned deficiency of existing diffusion barrier, the invention provides a kind of preparation method that can realize the diffusion barrier that two-way stretch and coating procedure complete on a production line.
The technical scheme that the present invention solves its technical matters is: a kind of preparation method of diffusion barrier, this diffusion barrier comprises that sandwich layer is also located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing (MDO) by film in the preparation and carry out longitudinal stretching, prepare film transverse stretching machine (TDO) simultaneously, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
Recommend consisting of of diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 1 ~ 8 mass parts.
Be recommended in film transverse stretching machine, the temperature setting of its preheating section is set to 70～90 DEG C, and the temperature setting of stretch section is set to 90～125 DEG C.
Described online apparatus for coating can be bar seam apparatus for coating or nick roller apparatus for coating or dropping curtain apparatus for coating.
Beneficial effect of the present invention is: the method that applies online diffusion layer coating fluid has been avoided the Complicated Flow being coated with after the first two-way stretch of current technology, can realize two-way stretch and coating procedure completes on a production line, draw heating process and diffusion layer coating fluid curing process to be integrated in the same area to complete, saved equipment cost horizontal.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment mono-
A kind of preparation method of diffusion barrier, this diffusion barrier comprises sandwich layer and is located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing (MDO) by film in the preparation and carry out longitudinal stretching, prepare film transverse stretching machine (TDO) simultaneously, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
Consisting of of diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 4 mass parts.
In film transverse stretching machine, the temperature setting of its preheating section is set to 80 DEG C, and the temperature setting of stretch section is set to 110 DEG C.
Described online apparatus for coating can be bar seam apparatus for coating.
Embodiment bis-
A kind of preparation method of diffusion barrier, this diffusion barrier comprises sandwich layer and is located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing (MDO) by film in the preparation and carry out longitudinal stretching, prepare film transverse stretching machine (TDO) simultaneously, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
Consisting of of diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 1 mass parts.
In film transverse stretching machine, the temperature setting of its preheating section is set to 85 DEG C, and the temperature setting of stretch section is set to 100 DEG C.
Described online apparatus for coating can be nick roller apparatus for coating.
Embodiment tri-
A kind of preparation method of diffusion barrier, this diffusion barrier comprises sandwich layer and is located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing (MDO) by film in the preparation and carry out longitudinal stretching, prepare film transverse stretching machine (TDO) simultaneously, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
Consisting of of diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 3 mass parts.
In film transverse stretching machine, the temperature setting of its preheating section is set to 70 DEG C, and the temperature setting of stretch section is set to 120 DEG C.
Described online apparatus for coating can be dropping curtain apparatus for coating.
Embodiment tetra-
A kind of preparation method of diffusion barrier, this diffusion barrier comprises sandwich layer and is located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing (MDO) by film in the preparation and carry out longitudinal stretching, prepare film transverse stretching machine (TDO) simultaneously, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
Consisting of of diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 7 mass parts.
In film transverse stretching machine, the temperature setting of its preheating section is set to 90 DEG C, and the temperature setting of stretch section is set to 125 DEG C.
Described online apparatus for coating can be bar seam apparatus for coating.
Embodiment five
A kind of preparation method of diffusion barrier, this diffusion barrier comprises sandwich layer and is located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing (MDO) by film in the preparation and carry out longitudinal stretching, prepare film transverse stretching machine (TDO) simultaneously, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
Consisting of of diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 8 mass parts.
In film transverse stretching machine, the temperature setting of its preheating section is set to 75 DEG C, and the temperature setting of stretch section is set to 90 DEG C.
Described online apparatus for coating can be dropping curtain apparatus for coating.
Claims (4)
1. a preparation method for diffusion barrier, this diffusion barrier comprises sandwich layer and is located at the diffusion layer on sandwich layer two sides, first sandwich layer is indulged to machine drawing by film in the preparation and carries out longitudinal stretching, it is characterized in that this preparation method also comprises the following steps:
Prepare film transverse stretching machine, between the vertical machine drawing of film and film transverse stretching machine, online apparatus for coating is set simultaneously, through the sandwich layer of longitudinal stretching first by online apparatus for coating at its two sides precoating diffusion layer coating fluid, enter again afterwards and in film transverse stretching machine, carry out cross directional stretch.
2. the preparation method of diffusion barrier as claimed in claim 1, is characterized in that: the consisting of of described diffusion layer coating fluid: butanone 20 mass parts; Ethyl acetate 12 mass parts; Acrylate resin 10 mass parts; Isocyanates 1 mass parts; Diffusion particle 1 ~ 8 mass parts.
3. the preparation method of diffusion barrier as claimed in claim 2, is characterized in that: in film transverse stretching machine, the temperature setting of its preheating section is set to 70～90 DEG C, and the temperature setting of stretch section is set to 90～125 DEG C.
4. the preparation method of the diffusion barrier as described in one of claim 1 ~ 3, is characterized in that: described online apparatus for coating is bar seam apparatus for coating or nick roller apparatus for coating or dropping curtain apparatus for coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410194873.0A CN103969718A (en) | 2014-05-10 | 2014-05-10 | Diffusion film preparing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410194873.0A CN103969718A (en) | 2014-05-10 | 2014-05-10 | Diffusion film preparing method |
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| CN103969718A true CN103969718A (en) | 2014-08-06 |
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| CN201410194873.0A Pending CN103969718A (en) | 2014-05-10 | 2014-05-10 | Diffusion film preparing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183984A (en) * | 2019-06-11 | 2019-08-30 | 广州市默孚材料科技有限公司 | Biodegradable tape |
| CN110205044A (en) * | 2019-06-11 | 2019-09-06 | 广州市默孚材料科技有限公司 | Biodegradable tape preparation method and biodegradable tape |
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| CN101663153A (en) * | 2007-03-27 | 2010-03-03 | 富士胶片株式会社 | Method for production of polyester resin film, and polyester resin film, antireflective film and diffusion film produced by the method |
| CN101362370A (en) * | 2007-08-08 | 2009-02-11 | 颖台科技股份有限公司 | Molding method for light diffusion structure of diffusion film and apparatus thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110183984A (en) * | 2019-06-11 | 2019-08-30 | 广州市默孚材料科技有限公司 | Biodegradable tape |
| CN110205044A (en) * | 2019-06-11 | 2019-09-06 | 广州市默孚材料科技有限公司 | Biodegradable tape preparation method and biodegradable tape |
| CN110205044B (en) * | 2019-06-11 | 2021-06-04 | 广州市默孚材料科技有限公司 | Preparation method of biodegradable box sealing adhesive tape and biodegradable box sealing adhesive tape |
| CN110183984B (en) * | 2019-06-11 | 2021-09-14 | 广州市默孚材料科技有限公司 | Biodegradable adhesive tape for sealing box |
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Application publication date: 20140806 |