CN102582180A - Optical biaxially oriented polyester basement membrane for panel display and preparation method thereof - Google Patents
Optical biaxially oriented polyester basement membrane for panel display and preparation method thereof Download PDFInfo
- Publication number
- CN102582180A CN102582180A CN201210063358XA CN201210063358A CN102582180A CN 102582180 A CN102582180 A CN 102582180A CN 201210063358X A CN201210063358X A CN 201210063358XA CN 201210063358 A CN201210063358 A CN 201210063358A CN 102582180 A CN102582180 A CN 102582180A
- Authority
- CN
- China
- Prior art keywords
- polyester
- melt
- basement membrane
- film
- optical grade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses an optical biaxially oriented polyester basement membrane for panel display and a preparation method thereof. The basement membrane is a synchronous biaxially oriented polyester film with polyester serving as a main component and is formed by an upper surface layer, a core layer and a lower surface layer, wherein the component of the core layer is optical level polyester, the components of the upper surface layer and the lower surface layer are both formed by polyester master batch or the polyester master batch and optical level polyester. Haze of the basement membrane is from 0% to 1.0%, transparency>=95%, and thermal yield <=0.5%. The optical biaxially oriented polyester basement membrane for the panel display has the advantages of being high in full ray transparency rate, low in haze, stable in size, not easy to deform under self-weight and the like. In addition, the basement membrane is used for preparing an optical function film in a large-sized panel display.
Description
Technical field
The present invention relates to a kind of FPD with optics biaxial stretching polyester basement membrane and preparation method thereof; A kind of optical functional film that is used for making the large scale flat-panel monitor of more specifically saying so; Have low haze, the high grade of transparency, dimensionally stable, characteristics such as not yielding under deadweight.
?
Background technology
Asynchronous stretching is adopted in the making of polyester film usually, promptly carries out longitudinal stretching earlier and carries out cross directional stretch again, carries out horizontal orientation after strand is machine-direction oriented again; The limit portion both sides of the orientation, particularly film of this manufacture craft meeting saboteur chain cause film performance unbalanced; Produce performance " arc " promptly on the cross section both sides performance and zone line performance unbalanced; Particularly optical property causes the film both sides unavailable, causes great waste; (37 inch and more than) are all the more so when being used for large-sized FPD, cause waste of material.In addition, adopt asynchronous pulling method, film surface has cut, scratch.And the optical grade film is very strict to the optical property requirement of film, on production technology, requires film surface no marking, scratch, and is also very strict to the pigment requirement of film.
?
Summary of the invention
Deficiency to above-mentioned prior art; The object of the present invention is to provide a kind of FPD with optics biaxial stretching polyester basement membrane and preparation method thereof; It can overcome the two-step stretch method behind longitudinal stretching, destroys directed shortcoming again during cross directional stretch, can guarantee that film surface does not have tiny cut, scratch etc.; Film dimensions is very stable simultaneously, balancing performance.
The technical scheme that the present invention is taked for its purpose of realization is: a kind of FPD is with optics biaxial stretching polyester basement membrane; It is a three-decker; Constitute by upper epidermis, sandwich layer and following top layer; The component of basement membrane center core layer is the optical grade polyester, and the component on upper and lower top layer is by polyester masterbatch, or polyester masterbatch and optical grade polyester formation; The basement membrane mist degree is 0 ~ 1.0%, transparency>=95%, hot yield≤0.5%.
Said upper and lower top layer component, by weight percentage: polyester masterbatch is 40-100%wt, the optical grade polyester is 0-60%wt.
Said optical grade polyester inherent viscosity is 0.68 ± 0.01dL/g, and colourity b value is-4 ~+2, and the colourity b value of more optimizing is-3 ~+1.
Said polyester masterbatch active ingredient contains transparent circular SiO
2One or more of particulate, polymethyl methacrylate particulate or crosslinked polystyrene particulate, concentration are 30000ppm ~ 100000ppm.
These basement membrane one or both sides carry out corona treatment, and perhaps corona treatment is not carried out on the two sides.
Make the method for FPD, comprise the steps: with optics biaxial stretching polyester basement membrane
A, optical grade polyester process fluid bed got dried feed in 4～5 hours with 140～160 ℃ temperature drying; Said dried feed is heated into molten condition in melt extruding machine, get into the metering extruder after filtering, gets the sandwich layer melt;
With polyester masterbatch, or polyester masterbatch and polyester slice be through after fusion, vacuumizing processing in two auxiliary double screw extruders, and the moisture content that removes by filter in the raw material obtains respectively as the crowded melt of assisting of upper epidermis and following top layer with impurity; The sandwich layer melt converges in three layers of die head with auxilliary crowded melt extrudes mixed melt, and converging extrusion temperature is 270～290 ℃;
B, for the mixed melt of extruding among the said step a, form the casting sheet through two-sided cooling, will cast sheet again and be cooled to 60～65 ℃;
C, will casting sheet, to carry out longitudinal stretching and cross directional stretch synchronously be film, and the preheating section temperature of synchro-draw is 80～100 ℃, is aided with Infrared Heating, and the stretch section temperature is 120～130 ℃, and heat setting temperature is 90～130 ℃;
D, the gained film among the step c is got into hauling machine after deburring, film flattens through the carry-over pinch rolls cooling;
The film that e, cooling flatten gets into online cutting machine and cuts, batches, processes finished product.
As prioritization scheme: can be with the melt that gets into from steps d deburring rim charge after the fusion of reworked material double screw extruder; In melt extruding machine, be heated into the fusion melt with the dried feed of optical grade polyester; Both converge in melt pipe after filter the back and get into the metering extruder, after smart the filtration the sandwich layer melt.
As prioritization scheme: before first roller of said hauling machine, be provided with a clearer in the steps d.
As prioritization scheme: said sandwich layer melt is no bubble melt, and its aggregated particle is less than 10 μ m.
As prioritization scheme: film described in the steps d flattens and carries out corona treatment through the carry-over pinch rolls cooling.
As prioritization scheme: each step is all carried out in dust proof workshop in the said method, and the workshop cleanliness factor is 100000 grades, and in the production equipment separate space in workshop, its cleanliness factor is 10000 grades.
Can be known by technique scheme: the present invention adopts synchro-draw technology, and film did not contact with roller before thermal finalization aborning, guaranteed that film surface does not have tiny cut, scratch etc.In dust proof workshop, produce the effectively fine dust of control film surface simultaneously.
The specific embodiment
The present invention adopts the synchro-draw method to overcome the two-step stretch method behind longitudinal stretching, destroys directed shortcoming again during cross directional stretch, carries out vertical, horizontal simultaneously and stretches, and film dimensions is very stable, and performance is in admirable proportion.The characteristics of synchro-draw line are, will pass through the pretreated casting sheet of extruding and accomplish stretching, thermal finalization processing and cooling processing on the both direction in length and breadth simultaneously in biaxial orientation stretching machine inside, to process needed film.In this process, the casting sheet is clamped by high performance membrane in the import department of two machine drawings, then by anchor clamps in the same way, synchronous operation, make and cast two the preheating section sufficient preheatings of sheet in two machine drawings; And then preheating section is the biaxial tension section, and under 200 ℃ of draft temperatures, the casting sheet is realized vertical, cross directional stretch orientation that film is synchronous by means of the expanding of anchor clamps and the motion that clocklike increases spacing jig gradually; Then by five elevated temperature heat shaping areas accomplish films crystal formation transformation (γ crystal formation → alpha-crystal form) and quicken crystallization process, eliminate the internal stress of film, improve degree of crystallinity, make crystal structure be tending towards perfect, greatly reduce the percent thermal shrinkage of film than two-step stretch.Can see that from the process of film forming in the method for synchronous bidirectional stretch orientation, film is not contact with any roller when stretching, so it does not receive the influence of roll surface quality, can make the film of the high grade of transparency, no marking, scratch.In this way, the casting sheet receives the position-limiting action of anchor clamps, and the casting sheet can not produce constriction, has improved film gauge uniformity greatly.
The optical grade polyester inherent viscosity that the present invention adopts is 0.68 ± 0.01dL/g, and colour colourity b value is-4 ~+2, and what more optimize is-3 ~+1.Inherent viscosity is big more, and the deflection of film is big more, and this is very meaningful in large-sized FPD, because the large-sized film deadweight of optical thin film thicker (180 μ m ~ 250 μ m) is bigger.Film deflection height is not yielding under deadweight.The b value is big more, and the film color is more yellow, and the b value is not suitable for the blooming manufacturing usually greater than 3; The b value is more little more favourable to producing optical thin film; But the b value is less than 5, and can there be the problem of oozing out in catalyst, additive during polyester, and the long term reliability of film is had bigger influence.Below be embodiments of the invention:
Embodiment 1
Upper epidermis is made up of polyester masterbatch and optical grade polyester slice, and by weight percentage, wherein: polyester masterbatch is 40%wt, and surplus is the optical grade polyester slice; Following top layer is made up of polyester masterbatch and optical grade polyester slice, and by weight percentage, wherein: polyester masterbatch is 40%wt, and surplus is the optical grade polyester slice; Sandwich layer is 100% optical grade polyester slice.The optical grade polyester inherent viscosity is 0.68 ± 0.01dL/g, and colourity b value is-3 ~ ± 1, and the active ingredient of polyester masterbatch is SiO
2Particulate, valid density are 30000ppm.
This film is undertaken by following method:
A, polyester slice process fluid bed got dried feed in 4～5 hours with 140～160 ℃ temperature drying; Said dried feed is heated into molten condition in melt extruding machine, get into the metering extruder after filtering, obtains not having bubble after smart the filtration, does not have the high-quality melt greater than 10 μ m aggregated particles, as the sandwich layer melt; Or will be from the melt after the fusion of steps d deburring rim charge entering reworked material double screw extruder; In melt extruding machine, be heated into the fusion melt with the dried feed of optical grade polyester slice; Both converge in melt pipe after filter back entering metering extruder; Obtain not having bubble after smart the filtration, do not have high-quality melt, as the sandwich layer melt greater than 10 μ m aggregated particles.
With polyester masterbatch, or polyester masterbatch and polyester slice be through after fusion, vacuumizing processing in two auxiliary double screw extruders, and the moisture content that removes by filter in the raw material obtains respectively as the crowded melt of assisting of upper epidermis and following top layer with impurity; The sandwich layer melt converges in three layers of die head with auxilliary crowded melt to be extruded, and converging extrusion temperature is 270～290 ℃;
B, for the mixed melt of extruding among the said step a, form casting sheet through the cooling of first, second sharp cooling roll two sides, will cast sheet and be cooled to 60～65 ℃, wherein first sharp cooling roll is provided with wind pouring cooling device;
C, casting sheet adopt synchro-draw, indulge stretching and cross directional stretch simultaneously, and the preheating section temperature is 80～100 ℃, is aided with Infrared Heating, and the stretch section temperature is 120～130 ℃, and heat setting temperature is 90～130 ℃.
The film of d, process c step gets into hauling machine after deburring, film flattens through carry-over pinch rolls and carries out one or both sides corona treatment (also can not carrying out corona treatment according to actual needs).
Film after e, the corona treatment gets into online cutting machine and cuts, batches, processes finished product.
Embodiment 2
Upper epidermis is made up of polyester masterbatch and optical grade polyester slice, and by weight percentage, wherein: polyester masterbatch is 60%wt, and surplus is the optical grade polyester slice; Following top layer is made up of polyester masterbatch and optical grade polyester slice, and by weight percentage, wherein: polyester masterbatch is 60%wt, and surplus is the optical grade polyester slice; Sandwich layer is 100% optical grade polyester slice.The optical grade polyester inherent viscosity is 0.68 ± 0.01dL/g, and colourity b value is that the active ingredient of-1 ~ ± 1 polyester masterbatch is the polymethyl methacrylate particulate, and valid density is 50000ppm.
Production method and embodiment 1 are together.
?
Embodiment 3
Upper epidermis is made up of polyester masterbatch and optical grade polyester slice, and by weight percentage, wherein: polyester masterbatch is 100%wt; Following top layer is made up of polyester masterbatch and optical grade polyester slice, and by weight percentage, wherein: polyester masterbatch is 100%wt; Sandwich layer is 100% optical grade polyester slice.The optical grade polyester inherent viscosity is 0.68 ± 0.01dL/g, and colourity b value is that the active ingredient of 0 ~ ± 1 polyester masterbatch is the crosslinked polystyrene particulate, and valid density is 100000ppm.
Production method and embodiment 1 are together.
Above-mentioned embodiment only is preferred embodiment of the present invention, is not that the present invention is done any type of restriction.Every foundation technology of the present invention and method essence all still belong in the scope of technology of the present invention and method scheme any simple modification, equivalent variations and modification that above embodiment did.
Claims (11)
1. a FPD is with optics biaxial stretching polyester basement membrane; It is characterized in that: this basement membrane is a three-decker, is made up of upper epidermis, sandwich layer and following top layer, and the component of its center core layer is the optical grade polyester; The component on upper and lower top layer is by polyester masterbatch, or polyester masterbatch and optical grade polyester formation; The basement membrane mist degree is 0 ~ 1.0%, transparency>=95%, hot yield≤0.5%.
2. FPD according to claim 1 is characterized in that with optics biaxial stretching polyester basement membrane: said upper and lower top layer component, and by weight percentage: polyester masterbatch is 40-100%wt, the optical grade polyester is 0-60%wt.
3. FPD according to claim 1 is characterized in that with optics biaxial stretching polyester basement membrane: said optical grade polyester inherent viscosity is 0.68 ± 0.01dL/g, and colourity b value is-4 ~+2, and the colourity b value of more optimizing is-3 ~+1.
4. FPD according to claim 2 is characterized in that with optics biaxial stretching polyester basement membrane: said polyester masterbatch active ingredient contains transparent circular SiO
2One or more of particulate, polymethyl methacrylate particulate or crosslinked polystyrene particulate, concentration are 30000ppm ~ 100000ppm.
5. FPD according to claim 1 is characterized in that with optics biaxial stretching polyester basement membrane: these basement membrane one or both sides carry out corona treatment, and perhaps corona treatment is not carried out on the two sides.
6. make the method for each described FPD of claim 1-5, it is characterized in that carrying out as follows with optics biaxial stretching polyester basement membrane:
A, optical grade polyester process fluid bed got dried feed in 4～5 hours with 140～160 ℃ temperature drying; Said dried feed is heated into molten condition in melt extruding machine, get into the metering extruder after filtering, gets the sandwich layer melt;
With polyester masterbatch, or polyester masterbatch and polyester slice be through after fusion, vacuumizing processing in two auxiliary double screw extruders, and the moisture content that removes by filter in the raw material obtains respectively as the crowded melt of assisting of upper epidermis and following top layer with impurity; The sandwich layer melt converges in three layers of die head with auxilliary crowded melt extrudes mixed melt, and converging extrusion temperature is 270～290 ℃;
B, for the mixed melt of extruding among the said step a, form the casting sheet through two-sided cooling, will cast sheet again and be cooled to 60～65 ℃;
C, will casting sheet, to carry out longitudinal stretching and cross directional stretch synchronously be film, and the preheating section temperature of synchro-draw is 80～100 ℃, is aided with Infrared Heating, and the stretch section temperature is 120～130 ℃, and heat setting temperature is 90～130 ℃;
D, the gained film among the step c is got into hauling machine after deburring, film flattens through the carry-over pinch rolls cooling;
The film that e, cooling flatten gets into online cutting machine and cuts, batches, processes finished product.
7. preparation method according to claim 6; It is characterized in that: from the melt after the fusion of steps d deburring rim charge entering reworked material double screw extruder; In melt extruding machine, be heated into the fusion melt with the dried feed of optical grade polyester; Both converge in melt pipe after filter the back and get into the metering extruder, after smart the filtration the sandwich layer melt.
8. preparation method according to claim 6 is characterized in that: before first roller of said hauling machine, be provided with a clearer in the steps d.
9. according to claim 6 or 7 described preparation methods, it is characterized in that: said sandwich layer melt is no bubble melt, and its aggregated particle is less than 10 μ m.
10. preparation method according to claim 6 is characterized in that: film described in the steps d is through carry-over pinch rolls cooling flattening and carry out corona treatment.
11. preparation method according to claim 6 is characterized in that: each step is all carried out in dust proof workshop in this method, and the workshop cleanliness factor is 100000 grades, and in the production equipment separate space in workshop, its cleanliness factor is 10000 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210063358XA CN102582180A (en) | 2012-03-12 | 2012-03-12 | Optical biaxially oriented polyester basement membrane for panel display and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210063358XA CN102582180A (en) | 2012-03-12 | 2012-03-12 | Optical biaxially oriented polyester basement membrane for panel display and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102582180A true CN102582180A (en) | 2012-07-18 |
Family
ID=46471669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210063358XA Pending CN102582180A (en) | 2012-03-12 | 2012-03-12 | Optical biaxially oriented polyester basement membrane for panel display and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102582180A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196653A (en) * | 2015-09-23 | 2015-12-30 | 安徽国风塑业股份有限公司 | Polyester base film for window film and manufacturing technology of polyester base film |
| CN107538709A (en) * | 2016-06-24 | 2018-01-05 | 可隆工业株式会社 | Polyester multilayer membrane and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759137A (en) * | 2003-03-11 | 2006-04-12 | 三菱聚酯薄膜公司 | Biaxially oriented polyester film and release film |
| CN101293412A (en) * | 2008-05-29 | 2008-10-29 | 常州钟恒新材料有限公司 | Special optical level polyester film and production method thereof |
| US20090068401A1 (en) * | 2004-12-20 | 2009-03-12 | Mitsubishi Plastics , Inc. | Optical Biaxially Oriented Polyester Film |
-
2012
- 2012-03-12 CN CN201210063358XA patent/CN102582180A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759137A (en) * | 2003-03-11 | 2006-04-12 | 三菱聚酯薄膜公司 | Biaxially oriented polyester film and release film |
| US20090068401A1 (en) * | 2004-12-20 | 2009-03-12 | Mitsubishi Plastics , Inc. | Optical Biaxially Oriented Polyester Film |
| CN101293412A (en) * | 2008-05-29 | 2008-10-29 | 常州钟恒新材料有限公司 | Special optical level polyester film and production method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196653A (en) * | 2015-09-23 | 2015-12-30 | 安徽国风塑业股份有限公司 | Polyester base film for window film and manufacturing technology of polyester base film |
| CN107538709A (en) * | 2016-06-24 | 2018-01-05 | 可隆工业株式会社 | Polyester multilayer membrane and preparation method thereof |
| CN107538709B (en) * | 2016-06-24 | 2019-10-15 | 可隆工业株式会社 | Polyester multilayer membrane and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101463170B (en) | Broad width polychloroethylene contraction film, and production facility and manufacturing process thereof | |
| CN109130422B (en) | Matte biaxially oriented polyester film and preparation method thereof | |
| CN102582190A (en) | Optical biaxial oriented polyester base film and manufacturing method thereof | |
| CN101623947B (en) | Ultra-thin BOPET film and manufacturing method thereof | |
| CN104259238A (en) | Processing method of oxygen-free copper sectional materials | |
| CN108281593A (en) | A method of preparing polypropylene, polyethylene/polypropylene three-layer composite microporous membrane | |
| CN102275317B (en) | Three-stage stretching process for cast film | |
| CN103707528A (en) | High-permeability membrane production line and high-permeability membrane production process | |
| CN110450490A (en) | A kind of BOPE film and preparation method thereof | |
| CN101722690B (en) | Surface-skinning free foaming PVC plastic board and preparation method thereof | |
| CN106313577A (en) | Production technology of biaxially oriented polyester film | |
| CN102582180A (en) | Optical biaxially oriented polyester basement membrane for panel display and preparation method thereof | |
| CN103737937A (en) | Processing method for increase longitudinal stretching strength of polyester heat shrinkage film | |
| CN105291444B (en) | The plastic honeycomb board continuous producing method and equipment of synergy are rolled based on plastic uptake | |
| CN102248728A (en) | Uvioresistant BOPP (Biaxially Oriented Polypropylene) film and preparation process thereof | |
| CN103223758B (en) | A kind of architectural engineering BOPET film and preparation method thereof | |
| CN103009750B (en) | A kind of Biaxially oriented polypropylene common cigarette packaging film and manufacture method thereof | |
| CN103231562A (en) | Biaxial stretching polyester high brightness mirror surface film and preparation method thereof | |
| CN202498800U (en) | Continuous fiber reinforced polypropylene foamed board | |
| CN109878050A (en) | PVC foam co-extrusion ASA fiberglass reinforced technique | |
| CN102848560A (en) | PP foaming plate, forming method, polypropylene foaming plate material and forming method | |
| CN102873950A (en) | High-surface-energy double-direction stretching polypropylene thin film and manufacturing method thereof | |
| CN1169911A (en) | Manufacture of bidirectional extension hot shrinking polypropylene film | |
| CN202498676U (en) | Continuous fiber reinforced polypropylene foamed plate forming device | |
| CN107379584A (en) | The method of production of capacitor low-shrinkage Biaxially oriented polypropylene capactive film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |