CN1698976A - Film manufacturing method - Google Patents
Film manufacturing method Download PDFInfo
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- CN1698976A CN1698976A CNA2004100347992A CN200410034799A CN1698976A CN 1698976 A CN1698976 A CN 1698976A CN A2004100347992 A CNA2004100347992 A CN A2004100347992A CN 200410034799 A CN200410034799 A CN 200410034799A CN 1698976 A CN1698976 A CN 1698976A
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- resin
- roll
- glue
- film
- particle
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Abstract
This invention relates to a method for making film, which coats a liquid gum applying with beads on the base material. The method can prevent the particle deposition in the liquid gum effectively, and avoid generating the imperfect coating line of film.
Description
Technical field
The invention relates to glue that a kind of use contains particle (beads) and coat on the base material to make the method for film, this method can effectively be prevented the solids precipitation in the glue, eliminates coating and finishes rear film and produce the bad phenomenon that is coated with line.
Background technology
(back light) backlight module often is applied on the various liquid crystal panels, so that the backlight of liquid crystal to be provided.Certainly because of the difference of liquid crystal form, the form of backlight module is also different.Generally speaking, backlight module is by LGP (light guide panel), diffusion barrier (diffusion film), and reflectance coating (reflection film) is formed.Diffusion barrier is positioned at the top of LGP, and its major function is the light that sees through LGP to be done scattering handle, to reach the effect of atomizing.
Traditional diffusion barrier mainly is on the mylar base material, is coated with many chemical particle (beads), with as scattering particles.If but utilized mould coating machine (die coater) coating, chemical particle would be stuck on the spraying nozzle easily in coating process, causes diffusion barrier to produce the bad phenomenon that is coated with line.Precipitate easily owing to chemical particle in addition, so be difficult for obtaining uniform coating.
This case inventor finds after furtheing investigate, utilize the processing method of a kind of pair of roller mould coating machine (2-rolldie coater), glue can not produce the solids precipitation phenomenon, and particle wherein is difficult for being stuck on the spraying nozzle, therefore, glue can evenly be coated on the base material.Moreover, the film that utilizes this processing method to make, its thickness is controlled easily, therefore can effectively solve the aforesaid drawbacks.
Summary of the invention
The invention provides a kind of film-forming method, be preferably used as optical thin film, particularly diffusion film.This method comprises: first back-up roll is provided; Rolling by this first back-up roll drives a banded macromolecule resin base material; The glue that will contain particle is coated on this macromolecule resin base material via the mould dispense tip, to form thin film; Provide rotation direction the second metering roll identical with this first back-up roll; And provide a horizontal line to be 10 ° of scrapers to 80 ° of angles with this metering roll axle center, it is characterized in that this first back-up roll and this second metering roll are contacted with each other, and strike off glue on this metering roller surface with this scraper, with the thickness of control film.Above-mentioned steps can repeat repeatedly.
The horizontal line in scraper and this metering roll axle center is 60 ° of angles in the method for the invention.
Macromolecule resin is selected from poly-(methyl) acrylate, Merlon, polystyrene, polyolefin, cyclic olefine copolymer, cellulose acetate, polyimide resin, mylar and composition thereof constitute group, preferred macromolecule resin is a mylar, and preferably this mylar is terephthaldehyde's acetoacetic ester (PET).
Glue comprises particle, cement and additive.This particle is organic filler, inorganic particulate or both mixing with the diameter between 1 μ m to the 100 μ m, between preferred 3 μ m to the 30 μ m, organic filler be selected from acrylic resin, polystyrene resin, polyurethane resin and composition thereof constitute group, inorganic particulate is selected from group that zinc oxide, silica, titanium dioxide, aluminium oxide, calcium sulfate, barium sulfate, calcium carbonate and composition thereof constitute.Cement is selected from group that acrylic resin, polyamide, epoxy resin, polyimide resin, polyurethane resin, alkyd resins, mylar and composition thereof constitute.Additive comprises leveling agent, stabilization agent, wetting agent, anti-deterioration agent and/or dispersant.
Description of drawings
Fig. 1, Fig. 2 (A) and Fig. 2 (B) are the schematic diagram of two roller mould coating machines of being used to implement the inventive method.
To being described as follows of conventional letter among the figure:
1 back-up roll
2 banded macromolecule resin base materials
3 mould dispense tips
4 glues
5 metering rolls
6 scrapers
Tray on 7
8 reclaim glue
9 help the Pu
10 collagen solutions
11 glue grooves
The specific embodiment
The invention provides a kind of film-forming method, particularly relevant a kind of not optical thin film processing method of device (LCD) backlight module of liquid crystal that is applied to.With reference to shown in Figure 1, the inventive method comprises provides first roll (backup roll) (1) that supports; A kind of banded macromolecule resin base material (2) that drives by the rolling of this first back-up roll; The glue (4) that will contain particle (beads) is coated on this macromolecule resin base material via mould dispense tip (die coater head) (3), to form a film; Provide rotation direction the second metering roll (meteringroll) (5) identical with aforementioned first back-up roll, and provide a horizontal line to be the scraper at 10 ° to 80 ° θ angle (doctor blade) (6) with this metering roll axle center, it is characterized by this first back-up roll and this second metering roll are contacted with each other, and strike off glue on this metering roller surface with this scraper, with the thickness of control film.
The conventional films processing method is to use single round roller, its film thickness is controlled by the mould dispense tip, therefore need control glue discharge-amount, and often cause the particle in the glue to produce deposited phenomenon like this, and because the glue discharge-amount is few, therefore use after a period of time, particle easily is stuck on the nozzle, is coated with the generation of line when causing coating.
In the of the present invention pair of roller mould coating machine processing method, the spray volume of mould coating machine is bigger, and glue can not produce the solids precipitation phenomenon, and particle is difficult for being stuck on the spraying nozzle.
According to a particular embodiment of the invention, import the glue (4) of mould dispense tip through group Pu (9) from glue groove (11), coat via on the first coating macromolecule resin base material (2) that roll drove, the macromolecule resin base material film that formation is coated with by glue, the second metering roll that simultaneously another is rotated in the same way contacts with this first back-up roll, control the thickness of film in the mode of taking away unnecessary glue by it, be 10 ° of scrapers (6) by horizontal line again and strike off glue on this metering roller surface to 80 ° of θ angles with this metering roll axle center, recyclable in last tray (7) through the glue that strikes off.Preferred specific embodiment according to the present invention shown in Fig. 2 (A) and Fig. 2 (B), this scraper is 60 ° of angles for the horizontal line with this metering roll axle center.The method according to this invention is more even in the time of can making glue coat base material.
Employed macromolecule resin base material there is no particular restriction in the inventive method, it for example can be (methyl) acrylic resin, Merlon, polystyrene, polyolefin, cyclic olefine copolymer, cellulose acetate, polyimide resin, mylar etc., be preferably mylar, as polyethylene terephthalate (PET) or poly-dioctyl phthalate ethyl ester.
The method according to this invention, its employed glue comprises particle, cement (binder) and additive.
Particle used in the present invention has the diameter between 1 μ m to 100 μ m, preferably between 3 μ m to 30 μ m.This particle can be organic filler or inorganic particulate, is that those skilled in the art are known, and normally used in technology.For example, organic filler can be acrylic resin, polystyrene resin or polyurethane resin or its mixture; Group that for example optional free zinc oxide of inorganic particulate, silica, titanium dioxide, aluminium oxide, calcium sulfate, barium sulfate, calcium carbonate and composition thereof constitute.
Cement used in the present invention, be the macromolecular material in the common already known processes, group that for example optional free acrylic resin, polyamide, epoxy resin, polyimide resin, polyurethane resin, alkyd resins (alkyd resin), mylar and composition thereof constitute.Bond is transparent owing to allowing light see through to form, and it is preferably colourless transparent material.
Additive used in the present invention is that to be familiar with the technical staff of this technology known, and it for example can be leveling agent, stabilization agent, wetting agent, anti-deterioration agent and/or dispersant etc.
The prepared film of the inventive method comprises aforesaid macromolecule resin base material and glue, and it can be applicable to blooming, especially is applied in LCD (LCD) backlight module usefulness as optical diffusion film.
According to the present invention, can use above-mentioned glue to repeat above-mentioned identical coating step, preparing the two-sided film that contains particle, or the preparation plural layers.Prepared film has surface of good smoothness, flatness and is difficult for advantages such as scratch.
Claims (15)
1. method of making film comprises:
First back-up roll is provided;
Rolling by this first back-up roll drives a banded macromolecule resin base material;
The glue that will contain particle is coated on this macromolecule resin base material via the mould dispense tip, to form thin film;
Provide rotation direction the second metering roll identical with this first back-up roll, and
Provide a horizontal line to be 10 ° of scrapers to 80 ° of angles with this metering roll axle center, it is characterized by: this first back-up roll and this second metering roll are contacted with each other, and strike off glue on this metering roller surface with this scraper, with the thickness of control film.
2. method according to claim 1, wherein the horizontal line in this scraper and this metering roll axle center is 60 ° of angles.
3. method according to claim 1, wherein this glue comprises particle, cement and additive.
4. method according to claim 3, wherein this particle is organic filler, inorganic particulate or both mixing with the diameter between 1 μ m to the 100 μ m.
5. method according to claim 4, wherein this particle is organic filler, inorganic particulate or both mixing with the diameter between 3 μ m to the 30 μ m.
6. method according to claim 4, wherein this organic filler is selected from group that acrylic resin, polystyrene resin, polyurethane resin and composition thereof constitute.
7. method according to claim 4, wherein this inorganic particulate is selected from group that zinc oxide, silica, titanium dioxide, aluminium oxide, calcium sulfate, barium sulfate, calcium carbonate and composition thereof constitute.
8. method according to claim 3, wherein this cement is selected from group that acrylic resin, polyamide, epoxy resin, polyimide resin, polyurethane resin, alkyd resins, mylar and composition thereof constitute.
9. method according to claim 3, wherein this additive comprises leveling agent, stabilization agent, wetting agent, anti-deterioration agent and/or dispersant.
10. method according to claim 1, wherein this macromolecule resin is selected from group that poly-(methyl) acrylate, Merlon, polystyrene, polyolefin, cyclic olefine copolymer, cellulose acetate, polyimide resin, mylar and composition thereof constitute.
11. method according to claim 10, wherein this macromolecule resin is a mylar.
12. method according to claim 11, wherein this mylar is terephthaldehyde's acetoacetic ester (PET).
13. method according to claim 1, wherein this film is an optical thin film.
14. method according to claim 13, wherein this optical thin film is a diffusion barrier.
15. method according to claim 1, wherein said step can repeat for several times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100347992A CN1309488C (en) | 2004-05-17 | 2004-05-17 | Film manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100347992A CN1309488C (en) | 2004-05-17 | 2004-05-17 | Film manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1698976A true CN1698976A (en) | 2005-11-23 |
| CN1309488C CN1309488C (en) | 2007-04-11 |
Family
ID=35475321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100347992A Expired - Fee Related CN1309488C (en) | 2004-05-17 | 2004-05-17 | Film manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1309488C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131622A (en) * | 2008-08-29 | 2011-07-20 | 康宁股份有限公司 | Methods of applying a layer to a honeycomb body |
| CN101821324B (en) * | 2007-10-13 | 2012-06-27 | 柯尼卡美能达精密光学株式会社 | Optical film |
| CN103464348A (en) * | 2013-09-13 | 2013-12-25 | 浙江南洋科技股份有限公司 | Spraying method and spraying device for film with particles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0916480A4 (en) * | 1996-07-30 | 2001-10-10 | Hitachi Chemical Co Ltd | Manufacture of laminated film and printed wiring board |
| US20030215582A1 (en) * | 2002-05-20 | 2003-11-20 | Eastman Kodak Company | Optical films prepared by coating methods |
-
2004
- 2004-05-17 CN CNB2004100347992A patent/CN1309488C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821324B (en) * | 2007-10-13 | 2012-06-27 | 柯尼卡美能达精密光学株式会社 | Optical film |
| CN102131622A (en) * | 2008-08-29 | 2011-07-20 | 康宁股份有限公司 | Methods of applying a layer to a honeycomb body |
| CN102131622B (en) * | 2008-08-29 | 2014-01-15 | 康宁股份有限公司 | Methods of applying a layer to a honeycomb body |
| CN103464348A (en) * | 2013-09-13 | 2013-12-25 | 浙江南洋科技股份有限公司 | Spraying method and spraying device for film with particles |
| CN103464348B (en) * | 2013-09-13 | 2015-10-07 | 浙江南洋科技股份有限公司 | A kind of coating process of the film containing particle and apparatus for coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1309488C (en) | 2007-04-11 |
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| CP01 | Change in the name or title of a patent holder |
Address after: Kaohsiung City, Taiwan, China Patentee after: Changxing material industry limited-liability company Address before: Kaohsiung City, Taiwan, China Patentee before: Changxing Chemical Industrial Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20210517 |
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| CF01 | Termination of patent right due to non-payment of annual fee |