CN103529500A - Manufacturing method for diffusion membrane - Google Patents
Manufacturing method for diffusion membrane Download PDFInfo
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- CN103529500A CN103529500A CN201310478653.6A CN201310478653A CN103529500A CN 103529500 A CN103529500 A CN 103529500A CN 201310478653 A CN201310478653 A CN 201310478653A CN 103529500 A CN103529500 A CN 103529500A
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Abstract
The invention discloses a manufacturing method for a diffusion membrane. The manufacturing method comprises the following steps: A, coating a base membrane with a layer of coating liquid, wherein the coating liquid consists of the following components in parts by weight: 30-50 parts of polyacrylic acid polylol resin, 5-15 parts of curing agent, 0.5-1.5 parts of ultraviolet light absorber, 0.5-1.5 parts of antistatic agent and 45-55 parts of solvent; B, preheating the coating liquid at the preheating temperature of 20-40 DEG C for 1-4 seconds; C, jetting diffusion particles to the preheated coating liquid, and locally getting into the coating liquid. According to the manufacturing method disclosed by the invention, the getting-in degree of the diffusion particles can be controlled through low temperature drying temperature and drying time; as particle main bodies left at the outer side are not coated with the resin, and the particle main bodies are not viscous, follow-up particles cannot be adhered to surfaces of the particle main bodies, and therefore, pileup is effectively avoided, and the brightness of a backlight device is ensured. Meanwhile, the diffusion particles are embedded into the coating in a jetting manner, so that the distribution of the diffusion particles is comparatively even.
Description
(1) technical field
The present invention relates to a kind of manufacture method of diffusion barrier.
(2) background technology
At the back side of liquid crystal display liquid crystal layer, provide the back lighting device that irradiates this liquid crystal layer.The back lighting device of the type comprises cold-cathode fluorescence lamp, diffusion barrier, light guide plate, diffusion barrier, prism etc.A surface of diffusion barrier contacts with light guide plate, the light that reflection cold-cathode fluorescence lamp produces, and therefore, diffusion barrier is a requisite blooming piece.Diffusion barrier is a kind of film with scattered beam effect, the processing technology of conventional diffusion film comprises the following steps: mix spherical scattering particles and have in the solution of resin to form a mixed liquor in one, use applicator roll that coating mixed liquor is coated on transparent basement membrane, on polyethylene terephthalate (PET) basement membrane, apply layer of transparent particle and realize.
Existing diffusion barrier manufacturing process manufactures its brightness of diffusion barrier of moulding and the distribution consistency degree of diffusion particle need to improve.
(3) summary of the invention
In order to overcome the above-mentioned deficiency of existing diffusion barrier manufacturing process, the invention provides a kind of manufacture method of diffusion barrier, can obtain there is high brightness, diffusion barrier that diffusion particle is more evenly distributed.
The technical scheme that the present invention solves its technical matters is: a kind of manufacture method of diffusion barrier, comprises the following steps:
A. on basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
Polyacrylic acid polyol resin: 30～50 mass parts;
Hardening agent: 5～15 mass parts;
Ultraviolet light absorber: 0.5～1.5 mass parts;
Antistatic agent: 0.5～1.5 mass parts;
Solvent: 45～55 mass parts.
B. coating fluid is carried out to preheating, preheat temperature is 20～40 ℃, and be 1～4 second preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.
Preferably, in step C, diffusion particle is placed in to a particle tank, the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid.
Preferably, the pressure of high pressure draught is 2～10kg/cm
2.
Preferably, described basement membrane is PET film.
Preferably, described hardening agent is polyurethane curing agent; Described ultraviolet light absorber is benzotriazole UV absorbers; Described solvent is one or more in toluene, dimethylbenzene, butanone.
Beneficial effect of the present invention is: the degree that is absorbed in that can control diffusion particle by low temperature drying temperature and drying time, owing to staying the particle main body wrapped resin not in outside, do not there is viscosity, follow-up particle cannot stick to its surface, effectively avoided stacking, guaranteed the brightness of back lighting device.By the mode of spraying, diffusion particle is embedded in coating layer, the distribution of diffusion particle is more even simultaneously.
(4) embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment mono-
A manufacture method for diffusion barrier, comprises the following steps:
A. on PET basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
The polyacrylic acid polyol resin that the model that Hangzhou De Shang Chemical Co., Ltd. produces is MYU1251-XB: 35 mass parts;
Polyurethane curing agent: 15 mass parts;
Benzotriazole UV absorbers: 0.5 mass parts;
Cationic antistatic agent: 0.8 mass parts;
Toluene as solvent: 50 mass parts.
B. coating fluid is carried out to preheating, preheat temperature is 20 ℃, and be 4 seconds preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.Concrete injection method is: diffusion particle is placed in to a particle tank, and the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device (for example air compressor) UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid, and the pressure of high pressure draught is 2kg/cm
2.
Embodiment bis-
A manufacture method for diffusion barrier, comprises the following steps:
A. on PET basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
The polyacrylic acid polyol resin that the model that Hangzhou De Shang Chemical Co., Ltd. produces is MYU1251-XB: 45 mass parts;
Polyurethane curing agent: 8 mass parts;
Benzotriazole UV absorbers: 1.2 mass parts;
Anionic antistatic agents: 1.1 mass parts;
Dimethylbenzene as solvent: 45 mass parts.
B. coating fluid is carried out to preheating, preheat temperature is 25 ℃, and be 1 second preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.Concrete injection method is: diffusion particle is placed in to a particle tank, and the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device (for example air compressor) UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid, and the pressure of high pressure draught is 5kg/cm
2.
Embodiment tri-
A manufacture method for diffusion barrier, comprises the following steps:
A. on PET basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
The polyacrylic acid polyol resin that the model that Hangzhou De Shang Chemical Co., Ltd. produces is MYU1251-XB: 30 mass parts;
Polyurethane curing agent: 5 mass parts;
Benzotriazole UV absorbers: 1.5 mass parts;
Non-ionic antistatic agent: 0.7 mass parts;
Butanone as solvent: 52 mass parts.
B. coating fluid is carried out to preheating, preheat temperature is 40 ℃, and be 1 second preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.Concrete injection method is: diffusion particle is placed in to a particle tank, and the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device (for example air compressor) UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid, and the pressure of high pressure draught is 9kg/cm
2.
Embodiment tetra-
A manufacture method for diffusion barrier, comprises the following steps:
A. on PET basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
The polyacrylic acid polyol resin that the model that Hangzhou De Shang Chemical Co., Ltd. produces is MYU1251-XB: 50 mass parts;
Polyurethane curing agent: 12 mass parts;
Benzotriazole UV absorbers: 0.7 mass parts;
Cationic ion antistatic agent: 1.4 mass parts;
Solvent: 46 mass parts.This solvent is comprised of butanone and toluene, and the volume ratio of butanone and toluene is 1:1.
B. coating fluid is carried out to preheating, preheat temperature is 30 ℃, and be 2 seconds preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.Concrete injection method is: diffusion particle is placed in to a particle tank, and the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device (for example air compressor) UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid, and the pressure of high pressure draught is 10kg/cm
2.
Embodiment five
A manufacture method for diffusion barrier, comprises the following steps:
A. on PET basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
The polyacrylic acid polyol resin that the model that Hangzhou De Shang Chemical Co., Ltd. produces is MYU1251-XB: 32 mass parts;
Polyurethane curing agent: 10 mass parts;
Benzotriazole UV absorbers: 1 mass parts;
Cationic ion antistatic agent: 0.5 mass parts;
Solvent: 48 mass parts.This solvent is comprised of butanone and dimethylbenzene, and the volume ratio of butanone and dimethylbenzene is 1:3.
B. coating fluid is carried out to preheating, preheat temperature is 35 ℃, and be 3 seconds preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.Concrete injection method is: diffusion particle is placed in to a particle tank, and the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device (for example air compressor) UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid, and the pressure of high pressure draught is 3kg/cm
2.
Embodiment six
A manufacture method for diffusion barrier, comprises the following steps:
A. on PET basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
The polyacrylic acid polyol resin that the model that Hangzhou De Shang Chemical Co., Ltd. produces is MYU1251-XB: 40 mass parts;
Polyurethane curing agent: 13 mass parts;
Benzotriazole UV absorbers: 1.3 mass parts;
Cationic ion antistatic agent: 1.5 mass parts;
Solvent: 55 mass parts.This solvent is comprised of toluene and dimethylbenzene, and the volume ratio of toluene and dimethylbenzene is 2:1.
B. coating fluid is carried out to preheating, preheat temperature is 32 ℃, and be 2 seconds preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.Concrete injection method is: diffusion particle is placed in to a particle tank, and the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device (for example air compressor) UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid, and the pressure of high pressure draught is 8kg/cm
2.
Claims (5)
1. a manufacture method for diffusion barrier, is characterized in that comprising the following steps:
A. on basement membrane, be coated with one deck coating fluid, this coating fluid is comprised of following component:
Polyacrylic acid polyol resin: 30～50 mass parts.
Hardening agent: 5～15 mass parts.
Ultraviolet light absorber: 0.5～1.5 mass parts.
Antistatic agent: 0.5～1.5 mass parts.
Solvent: 45～55 mass parts.
B. coating fluid is carried out to preheating, preheat temperature is 20～40 ℃, and be 1～4 second preheating time;
C. diffusion particle is ejected into through on the coating fluid of preheating and part and is absorbed in coating fluid.
2. the manufacture method of diffusion barrier as claimed in claim 1, is characterized in that: in step C, diffusion particle is placed in to a particle tank, the diffusion particle in described particle tank is ejected on coating fluid by jetting system;
Described jetting system comprises a nozzle, in described nozzle, has spray chamber, described spray chamber and described particle tank UNICOM; The rear end of described nozzle and high pressure draught device UNICOM, the front end of described nozzle is provided with the ejiction opening with described spray chamber UNICOM, and described ejiction opening is aimed at described coating fluid;
Thereby the high pressure draught that described high pressure draught device produces produces negative pressure when the particle tank through described drives diffusion particle to be ejected on coating fluid, and diffusion particle part is absorbed in coating fluid.
3. the manufacture method of diffusion barrier as claimed in claim 2, is characterized in that: the pressure of high pressure draught is 2～10kg/cm
2.
4. the manufacture method of diffusion barrier as claimed in claim 2 or claim 3, is characterized in that: described basement membrane is PET film.
5. the manufacture method of diffusion barrier as claimed in claim 2 or claim 3, is characterized in that: described hardening agent is polyurethane curing agent;
Described ultraviolet light absorber is benzotriazole UV absorbers;
Described solvent is one or more in toluene, dimethylbenzene, butanone.
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| CN201310478653.6A CN103529500B (en) | 2013-10-10 | 2013-10-10 | A kind of manufacture method of diffusion barrier |
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| CN201310478653.6A CN103529500B (en) | 2013-10-10 | 2013-10-10 | A kind of manufacture method of diffusion barrier |
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| CN103529500B CN103529500B (en) | 2016-02-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969717A (en) * | 2014-05-09 | 2014-08-06 | 宁波东旭成新材料科技有限公司 | Light diffusion film |
| CN106950624A (en) * | 2017-04-24 | 2017-07-14 | 宁波东旭成新材料科技有限公司 | A kind of quantum dot light diffusion barrier |
| CN113900169A (en) * | 2021-10-14 | 2022-01-07 | 宁波东旭成新材料科技有限公司 | Preparation method of anti-aging light diffusion film |
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| US20080206458A1 (en) * | 2004-03-14 | 2008-08-28 | Sony Corporation | Method for producing anti-glare film |
| JP2008268451A (en) * | 2007-04-18 | 2008-11-06 | Sanyo Electric Co Ltd | Optical element, master standard, resin master, resin mold, and metal mold |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1402083A (en) * | 2001-08-14 | 2003-03-12 | 精碟科技股份有限公司 | Diffusion board and mfg. method thereof |
| US20080206458A1 (en) * | 2004-03-14 | 2008-08-28 | Sony Corporation | Method for producing anti-glare film |
| CN101309955A (en) * | 2005-11-21 | 2008-11-19 | 柯尼卡美能达精密光学株式会社 | Method of treating optical film, apparatus for treating optical film, and process for producing optical film |
| CN101008684A (en) * | 2006-01-24 | 2007-08-01 | 科桥电子股份有限公司 | Light-increase dispersal structure and manufacture process therefor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103969717A (en) * | 2014-05-09 | 2014-08-06 | 宁波东旭成新材料科技有限公司 | Light diffusion film |
| CN103969717B (en) * | 2014-05-09 | 2016-02-03 | 宁波东旭成新材料科技有限公司 | A kind of optical diffusion film |
| CN106950624A (en) * | 2017-04-24 | 2017-07-14 | 宁波东旭成新材料科技有限公司 | A kind of quantum dot light diffusion barrier |
| CN113900169A (en) * | 2021-10-14 | 2022-01-07 | 宁波东旭成新材料科技有限公司 | Preparation method of anti-aging light diffusion film |
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