CN202748489U - Light diffusion film - Google Patents
Light diffusion film Download PDFInfo
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- CN202748489U CN202748489U CN 201220325961 CN201220325961U CN202748489U CN 202748489 U CN202748489 U CN 202748489U CN 201220325961 CN201220325961 CN 201220325961 CN 201220325961 U CN201220325961 U CN 201220325961U CN 202748489 U CN202748489 U CN 202748489U
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- light diffusion
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- diffusion
- diffusion film
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Abstract
The utility model relates to a light diffusion film, comprising a PET layer and a PET light diffusion layer, wherein the PET light diffusion layer is arranged on the surface of the PET layer. According to the utility model, by arranging the PET light diffusion layer on the surface of the PET layer, the light diffusion film is prepared by co-extrusion and biaxial tension of three layers; the light diffusion film has high haze, moderate light transmittance and good stability in haze and light transmittance, and is free from solvent in the preparation process and therefore environment-friendly, meanwhile, the light diffusion film is simple in preparation process and low in price, and has good application prospect and considerable commercial value.
Description
Technical field
The utility model relates to a kind of membrane structure, relates in particular to a kind of PET optical diffusion film.
Background technology
Diffusion barrier is a kind ofly point, line source can be converted to the film that line, area source possess light diffusion function.When light when the diffusion layer, the phenomenon of many refractions, reflection and scattering will occur in light, has so just caused the effect of optics diffusion, belongs to optical thin film.Diffusion barrier is widely used in the fields such as flat pannel display, LED lamp.
Traditional diffusion barrier mainly is at the BOPET base material layer of resinizing, the method adopts particulate is dispersed in the resin solvent, be applied to again substrate surface, behind solvent evaporates and resin solidification, prepare diffusion barrier, it is larger that this kind method is affected by coating uniformity, on the mass formation impact of product, not only yield rate is low, production cost is high but also used in process of production a large amount of solvents, and there be certain pollution in environment.
The utility model content
The utility model has overcome the defective that exists in the prior art, is to provide that a kind of quality is good, cost is low, the optical diffusion film of environmental protection.
Concrete technical scheme of the present utility model is as follows:
A kind of optical diffusion film comprises pet layer and PET light diffusion layer, and described PET light diffusion layer is located at the surface of pet layer.
In order to make optical diffusion film reach the effect of better optics diffusion, another surface of described pet layer also is provided with the PET light diffusion layer.
As improvement, each PET light diffusion layer all accounts for 4 ~ 10% of whole film thickness.
As improvement, described PET light diffusion layer contains diffusion particle, and the particle diameter of described diffusion particle is 1.5-25 μ m.
Described diffusion particle is silicon dioxide or barium sulphate.
The utility model arranges the PET light diffusion layer by the surface at pet layer, adopt and three-layer co-extrudedly go out two-way stretch and be prepared from, this optical diffusion film has that mist degree is high, light penetration is moderate and mist degree and light penetration good stability, do not use solvent, environmental protection in the preparation process, the while manufacturing process is simple, low price, has the very big marketable value of better application prospect.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, optical diffusion film of the present utility model, comprise pet layer 2, the upper surface of pet layer 2 is provided with a PET light diffusion layer 1, it is identical with the 2nd PET light diffusion layer 3 that its lower surface can be set up the 2nd PET light diffusion layer 3, the one PET light diffusion layers 1, forms by PET and diffusion particle, the 0.5 ~ 3.5%, the one PET light diffusion layer 1 and the 2nd PET light diffusion layer 3 that the weight of diffusion particle accounts for PET light diffusion layer general assembly (TW) all account for 4 ~ 10% of whole film thickness.When the lower surface of pet layer 2 is not established the 2nd PET light diffusion layer 3, adopt two-layer coextrusion two-way stretch to be prepared from; When the lower surface of pet layer 2 is set up the 2nd PET light diffusion layer 3, adopt three-layer co-extrudedly to go out two-way stretch and be prepared from.
Wherein the diffusion particle that contains of a PET light diffusion layer 1 and the 2nd PET light diffusion layer 3 is silicon dioxide or barium sulphate, described diffusion particle particle diameter is between 1.5 ~ 25 μ m, the percentage by weight of pressing diffusion particle calculates, particle diameter be 1.5 μ m ~ 5 μ m account for 70%, particle diameter be 5 μ m ~ 10 μ m account for 20%, particle diameter be 0 μ m ~ 20 μ m account for 10%.
Optical diffusion film of the present utility model has that mist degree is high, light penetration is moderate and mist degree and light penetration good stability, does not use solvent, environmental protection in the preparation process, and simple, the low price of manufacturing process simultaneously has the very big marketable value of better application prospect.
Certainly, above only is concrete exemplary applications of the present utility model, and protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (5)
1. an optical diffusion film is characterized in that comprising pet layer and PET light diffusion layer, and described PET light diffusion layer is located at the surface of pet layer.
2. optical diffusion film according to claim 1 is characterized in that another surface of described pet layer also is provided with the PET light diffusion layer.
3. optical diffusion film according to claim 1 and 2 is characterized in that each PET light diffusion layer all accounts for 4 ~ 10% of whole film thickness.
4. optical diffusion film according to claim 1 is characterized in that described PET light diffusion layer contains diffusion particle, and the particle diameter of described diffusion particle is 1.5-25 μ m.
5. optical diffusion film according to claim 4 is characterized in that described diffusion particle is silicon dioxide or barium sulphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325961 CN202748489U (en) | 2012-07-06 | 2012-07-06 | Light diffusion film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325961 CN202748489U (en) | 2012-07-06 | 2012-07-06 | Light diffusion film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748489U true CN202748489U (en) | 2013-02-20 |
Family
ID=47707862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325961 Expired - Fee Related CN202748489U (en) | 2012-07-06 | 2012-07-06 | Light diffusion film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202748489U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405698A (en) * | 2016-11-23 | 2017-02-15 | 江苏裕兴薄膜科技股份有限公司 | Preparation method of high-transmittance high-haze light diffusion film |
| WO2019169569A1 (en) * | 2018-03-07 | 2019-09-12 | 重庆颖锋兴瑞光电科技有限公司 | Three-in-one co-extrusion molded pp diffusion plate |
-
2012
- 2012-07-06 CN CN 201220325961 patent/CN202748489U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405698A (en) * | 2016-11-23 | 2017-02-15 | 江苏裕兴薄膜科技股份有限公司 | Preparation method of high-transmittance high-haze light diffusion film |
| WO2019169569A1 (en) * | 2018-03-07 | 2019-09-12 | 重庆颖锋兴瑞光电科技有限公司 | Three-in-one co-extrusion molded pp diffusion plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20160706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |