CN100419464C - Polyeather film for optical use - Google Patents
Polyeather film for optical use Download PDFInfo
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- CN100419464C CN100419464C CNB2004100451430A CN200410045143A CN100419464C CN 100419464 C CN100419464 C CN 100419464C CN B2004100451430 A CNB2004100451430 A CN B2004100451430A CN 200410045143 A CN200410045143 A CN 200410045143A CN 100419464 C CN100419464 C CN 100419464C
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- Prior art keywords
- film
- filler
- coating
- polyester film
- undercoat
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- Expired - Lifetime
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- 230000003287 optical effect Effects 0.000 title claims abstract description 33
- 229920006267 polyester film Polymers 0.000 claims abstract description 43
- 229920000728 polyester Polymers 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims description 68
- 238000000576 coating method Methods 0.000 claims description 35
- 239000011248 coating agent Substances 0.000 claims description 28
- 229920002799 BoPET Polymers 0.000 claims description 17
- 239000005041 Mylar™ Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 abstract description 9
- 239000010410 layer Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract 4
- 239000012790 adhesive layer Substances 0.000 abstract 2
- 239000010408 film Substances 0.000 description 65
- 238000000034 method Methods 0.000 description 47
- 230000008569 process Effects 0.000 description 25
- 239000002994 raw material Substances 0.000 description 12
- 230000002950 deficient Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 210000002469 basement membrane Anatomy 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 3
- 238000005984 hydrogenation reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 phosphorus compound Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 210000004379 membrane Anatomy 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229940124543 ultraviolet light absorber Drugs 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000003017 thermal stabilizer Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
Abstract
This polyester film for optical use comprises a substrate layer made of a biaxially-stretched polyester and an adhesive layer or layers that are easily adhered to at least one surface of the substrate layer. This substrate layer comprises particles having an average particle size of 1.0-10.0 [mu]m as well as minute particles having an average particle size of 0.03-0.50 [mu]m.
Description
Background of invention
Technical field
The present invention relates to a kind of optical polyester film, particularly relate to optical polyester film with good film planarization that good adhesiveness, transparency, optical transmission performance, mar-resistance and operability and optics uses.This film is specially adapted to field of display.
Background technology
Usually, most of plastic sheetings comprise that mylar all has necessary post-processing function, because all in addition aftertreatments basically of this film.In such last handling process, film during by some rollers owing to separate and produce cut at film surface with the roller friction and from roller.Specifically, in the situation of complete transparent membrane, operating performance is poor because the surfaceness of film is low, so coating performance is poor, is easy to generate cut in last handling process.Except producing in last handling process such surface imperfection, owing to the many rollers of film process, if the operability of film is poor in process, then film surface just produces many defectives in the process of making Biaxially oriented polyester film.Particularly, such film is when being used for making the optical articles of field of display, and such film will make its product produce serious defective.
Biaxially oriented polyester film is widely used as optical thin film, is owing to have good dimensional stability, chemical resistance and the transparency for other plastic sheetings.Particularly, Biaxially oriented polyester film mainly is used as: the panel of touch, it will stand off-line (off-line) and apply owing to will be used for the hard conating etc. of inorganic EL and liquid crystal display, this hard conating is coated with silver thereon afterwards at deposit transparent and ITO that conduct electricity (indium tin oxide), is coated with luminescent material then; Be used in the substrate on the diffusion sheet, it is corresponding to the back light unit of film in LCD watch-dog, prism lens and the protective film etc.; Be used to suppress antireflection (AR) substrate of light reflection, promptly be used for stoping flash of light by the extraneous light generation of display; And the near infrared light barrier plate that is used for plasma display panel (PDP).
Particularly, be used for the Biaxially oriented polyester film of display, the film that is used as basement membrane must have processing stability and the transparency, light transmissive, good anti-zoned property and planarization.Cut can cause the defective (stain) of electron device especially, and this is to process as the event of the inhomogeneous coating in the hard conating process owing to the inhomogeneous coating of transparent membrane on the defective part of correspondence and in the back.
Therefore, Biaxially oriented polyester film as Application of optical film in, obtain the good transparency, adhesiveness etc., just do not allow there is small defective at film surface.And, aspect the film planarization,, in the process of producing basement membrane,, cause part to be slided (slipping) owing to produce uneven tensile strength if the film planarization is poor, therefore cause cut and other defect at film surface.Film planarization difference also causes the inhomogeneous amount of coating weight in back processing coating process, thereby produces the inhomogeneous coated product of low value.Therefore, optical thin film especially needs the planarization that reaches good.
When producing Biaxially oriented polyester film, conventional already used a kind of method is to comprise inorganic filler in the undercoat that forms to avoid cut on the Biaxially oriented polyester film basement membrane.Yet, in producing the process of Biaxially oriented polyester film in the online coating process that forms undercoat (operation that online coating comprises have raw material fusion, extrude and cool off and use this raw material to make thin slice, applicating liquid coating thereon when producing film then, do like this is before or after the single shaft longitudinal stretching, but typically after uniaxial tension), also stretch at horizontal direction subsequently as solvent with a large amount of water, so be difficult to make the thickness of undercoat remain on a few μ m or bigger by such drawing process.Therefore, employed inorganic filler has certain restriction in the coating process aspect granule size.If use the bigger filler of granularity, fixedly the coating thickness of filler is smaller, thereby even in roller small friction in service, filler also can separate with coating.Therefore, can not reach the initial purpose of good film operability, and roller is contaminated owing to isolate filler.Than the problems referred to above even more serious be, because the longitudinal roller travelling speed in online coating process is (in most applications, longitudinal stretching is to carry out film stretching by the roller of driven (followed) and the travelling speed difference that is about between the roller of servo-actuated (following)) most of defectives that the uniaxial tension process is occurred can not avoid, because described online coating generally is to carry out behind vertical uniaxial tension in producing the Biaxially oriented polyester film process.To cause when employed inorganic filler quantity is greater than appropriate amount in coating process and the aftertreatment raw material between adhesiveness reduce, and after aftertreatment, give the product physical property and cause negative effect owing to poor adhesion.
If in film, do not use filler, undertaken by roller turn in the process of longitudinal stretching, because pulling force is inhomogeneous, then reduced the planarization of film after flakes melt and the extruding.The film out-of-flatness causes that crawling is even in last handling process, causes its processing characteristics and runnability to produce serious problem.
In order to improve the transparency of conventional Biaxially oriented polyester film, do not re-used filler.But do not use filler to cause problems such as film planarization difference and cut.Equally, produce cut, improve anti-zoned property, should contain filler in the undercoat in the online coating process, thereby in causing the longitudinal stretching process of most of cuts, a critical limit be arranged for avoiding producing cut for fear of film.Such longitudinal stretching process was carried out before online coating, that is to say, this process is to carry out before the film upper strata forms undercoat.Therefore, can not solve the cut problem that the film that has undercoat is produced in the longitudinal stretching process.The defective that produces in the longitudinal stretching process by coating base coat, makes the related defects lens effect bigger than actual defects seem more outstanding, causes the value of product is produced worse influence.
Japanese patent application JP9-183201 discloses a kind of mylar that suppresses film defects by film surface coating surface activator., the problem includes: the problem that tiny flaw produced that this film can not avoid problem before coating procedure, and therefore can not reach function required in the field of display.
Summary of the invention
For addressing the above problem, an object of the present invention is to provide a kind of optical polyester film, it can improve the film planarization by the film stretching ability that raising has good operation performance and anti-scratch performance, keeps the particularly display necessary transparent characteristic of film of optical thin film simultaneously.
Description of drawings
The features and advantages of the present invention will become clearer according to following detailed description of preferred embodiment and corresponding description of drawings, wherein:
Fig. 1 is the sectional view of the optical polyester film of one embodiment of the invention; With
Fig. 2 shows a kind of instrument that is used to measure optical polyester film of the present invention.
Detailed description of preferred embodiment
The present invention is that the used optical polyester film that achieves the above object is characterised in that, it comprises basalis and at least one lip-deep undercoat that sticks to basalis with resin glue of a biaxially stretched polyester, wherein said basalis comprises the particulate filler that mean diameter is 0.03 to 0.50 μ m, and the content of solid composition is 2 to 10 weight % in the coating liquid of formation undercoat.
In addition, optical polyester film of the present invention is characterised in that basalis comprises that further mean diameter is the filler of 1.0 to 10.0 μ m.
In addition, the feature of optical polyester film of the present invention is that also the turbidity of optical polyester film of the present invention is equal to or less than 1.5%, and the thickness of described film is equal to or greater than 25 μ m.
Making aromatic polyester that the Biaxially oriented polyester film of optics polyester-based bottom of the present invention uses, to be preferably main repetitive be the homopolymer of ethylene terephthalate or the multipolymer of ethylene terephthalate.Particularly, most preferably be the biaxially oriented film that makes by ethylene terephthalate.In the method for producing such polyester, the content that reduces oligomer in the polyester is maybe can use solvent extraction by solid phase, but also can use other method.
In the mylar that the present invention uses, the thermal stabilizer of use such as phosphoric acid or phosphorus compound etc., this for by using static a kind of fusion and the vibrin of extruding contacts with the rotation cooled roller/curing is necessary with the uniform non-stretching thin slice of acquisition thickness on the cooled roller rotating.
If desired, may add as various adjuvants such as antioxidant, organic lubricant, antistatic agent, ultraviolet light absorber, Photoresist, surfactants in mylar.
Usually, in order to keep the transparency of mylar, filler does not add in the substrate film, although employed particulate filler may be used on the demonstration field within the specific limits, but the inventor recognizes that the good transparency of maintenance is possible in optical polyester film of the present invention, thereby this can reach by being distributed in the planarization that the drawing stress that produces in the film stretching process improves the stretching homogeneity and improve film.
The resin that uses in the undercoat can be hydrogenation urethane resin, hydrogenation vibrin, hydrogenation acryloyl group resin etc., and it includes but not limited to water-soluble or water dispersed resin.Wherein said undercoat is arranged at least one surface of optical polyester film basalis of the present invention.
The urethane resin that uses in the undercoat of the present invention can be solvent-borne type, non-solvent or various aqueous coating formulation.For example, urethane resin can be the water-soluble carbamate resin with the thermal response of hydrophilic radical protection isocyanate end, as comprising the resin of protecting isocyanate-based group.The protection reagent of isocyanate group can be phenol, lactams, oxime, alcohol, contain activity methene compound of sulfonic group and thionyl or the like.
The acrylic acid resin preferably includes one or more, or the multipolymer of two or more, the acid number of described multipolymer is equal to or greater than 200eq/t, and this is by dry resin solution two hours under 80 ℃ and 100Pa decompression and records with known potassium hydroxide alcoholic solution titration solid matter subsequently.
Preferably, the coating that is used to form optical polyester film undercoat of the present invention is aqueous coating.When aqueous coating is coated to film surface, preferably adds the known non-ionic surfactant of appropriate amount or the wettability that anionic surfactant improves substrate film, and therefore this coating can evenly be coated with.
Also can add make as adjuvants such as heat-resisting inorganic polymer filler, ultraviolet light absorber, antistatic agent, antiseptic, organic lubricants have anti-electric shock in the undercoat, other function such as the property handled.
A kind of method that is used to produce Biaxially oriented polyester film of the present invention is but is not limited thereto the described successively biaxial-oriented method in back.
At first, pushed with the vibrin vacuum drying fully of raw material, fusion with by extruder, and formed laminar from the rotation chill roll through model the vibrin of high-temperature fusion subsequently.In this case, polyester contacts with chill roll by applying static, obtains a kind of non-stretching polyester sheet.In this case, non-stretching polyester sheet can have individual layer or multilayer structure by complex extruder.
At this, when using mean diameter as the particulate filler of 0.03-0.50 μ m and mean diameter during as the filler of 1.0-10.0 μ m, this application becomes the technology of the present invention feature, only uses the particulate filler of 0.03-0.50 μ m or two kinds of particulate filler to produce non-stretching thin slice.The filler that uses in this situation can be inorganic filler, for example: lime carbonate, calcium phosphate, porcelain earth, silica, talcum powder, titania, aluminium oxide, calcium fluoride, barium sulphate, zeolite, molybdenum sulfide, calcium hydroxide etc., and organic filler, as cross-linked polymer filler etc.Difference between the refraction coefficient of the refraction coefficient of filler and formation undercoat resin is equal to or greater than at 0.1 o'clock, and transparency reduces.Therefore, preferably use the silica filler of from many type fillers, selecting, because silica filler has the refraction coefficient similar to the undercoat refraction coefficient and can obtain good transparency.
Be lower than 0.03 μ m if be used to the mean diameter of the particulate filler of above-mentioned situation, this filler just can not influence the operating performance and the anti-zoned property of thin slice or film, and can not obtain to add the effect that is produced by particulate filler.If the mean diameter of described particulate filler is greater than 0.50 μ m, light transmission is lowered.Low like this light transmission is to be that the filler of 1.0 to 10.0 μ m mix to use and to produce by mean diameter.When using mean diameter to be the filler of 1.0 to 10.0 μ m, light transmission has reduction slightly.When further use when mean diameter is greater than the particulate filler of 0.50 μ m except that above-mentioned filler, light transmission will reduce more.Therefore, need to use mean diameter to be equal to or less than the particulate filler of 0.50 μ m.
Obtain non-stretching polyester sheet and 2.0 to the 4.5 times of mylars that produce uniaxial tension of this thin slice that stretch along the longitudinal direction simultaneously by on 70-120 ℃ of hot-rolling, transmitting.When on roller, rotating thin slice with such uniaxial tension, the lip-deep defective of polyester sheet mainly due to and roller between friction and produce.Can not avoid with such method by the defective that said process produces, promptly by add inactive filler to conventional undercoat to reach abrasion resistance.Characteristics according to optical polyester film of the present invention are that its defective that can avoid producing owing to said process also keeps transparency simultaneously.
80-150 ℃ heating region is fixed and is put on the both sides of the biaxially stretched polyester thin slice of above-mentioned generation with intermediate plate, so that by applying hot-air in the top of film and bottom and along 2.5 to 5.0 times of horizontal direction stretching thin slices.Subsequently, thin slice is introduced into the zone of the higher temperature (150-250 ℃) that is suitable for crystal orientation.
In addition, the process of coating bottom is to finish in arbitrary step of the method for producing film at least one surface of mylar.One or more of known coating processes such as the method that is used for applying undercoat on mylar can be that groove roller coat, rubberizing, rod are coated with, spraying, air doctor blade are coated with, dip-coating.
Solids content in the water-based bonding coating liquid can be preferably 1 to 20 weight %, more preferably is 2 to 10 weight % (in the coating liquids that comprise solids content of 100 weight %).
Can be to the Biaxially oriented polyester film painting bottom coating, or can after applying non-stretching mylar or uniaxial tension mylar, carry out biaxial stretch-formed.The method of back is commonly referred to online coating.In the present invention, be preferably the method (online coating) of back.In this case, the liquid that applies forms complete coating by the reaction of the heat cross-linking in the stenter zone, and Hot air quilt is applied to the top and the bottom of film in the described zone.The coated weight of the undercoat that forms for example is generally 0.01 to 1.00g/m2.
Biaxially oriented polyester film is wrapped on the bobbin by turnbuckle and winder.At this point, wide film is reeled during operation on specifying roller.
The bottom of Biaxially oriented polyester film of the present invention and other materials can bond well, but if desired, can carry out surface treatment with methods such as corona treatment, electron beam irradiation, flame treatment, to obtain better printing or adhesion.
Now, illustrate in greater detail the present invention with reference to embodiment and accompanying drawing.These embodiment especially, it will be apparent to those skilled in the art that scope of the present invention is not limited to these embodiment of the present invention's indication just for the present invention will be described.
[embodiment]
Make filler
Particulate filler A, B and C are used in the substrate of the present invention, wherein are respectively that particulate filler A is by SiO
2Make and have the mean diameter of 50nm; Filler B has the mean diameter of 2 μ m; Filler C has the mean diameter of 4 μ m.
Produce optical polyester film
Thickness be the non-stretching thin slice of 1300 μ m by following steps production: vacuum drying (with 0.5 holder) does not comprise Polyethylene Terephthalates's small pieces of filler as raw polymer high temperature drying in exsiccator, and remove the 0.4% grade of moisture that is included in the small pieces, cool off and solidify the polymkeric substance of fusing then, the extruder of the metallic roll by keeping 25 ℃ of surface temperatures (casting drum (drums)).In this case, particulate filler is sneaked into particulate filler with the small pieces that remove moisture by extruder and filler enters basalis.The longitudinal direction of non-stretching thin slice along film stretched three times, and this is by means of the roller after the non-stretching thin slice of heating moves the PET film that difference produces uniaxial tension with hot-rolling and infrared heater.After said process, the coating liquid of preparation is applied to the two sides of uniaxial tension PET film by Mayer Bar method.In this case, before coating, use independent corona treatment to carry out corona treatment on the two sides of film (wanting applied surface).The film two ends that apply are fixed and are directed to subsequently in the hot-air zone (stenter) with intermediate plate.After dry paint liquid, described film is the biaxial stretch-formed PET film of 100 μ m to produce thickness for four times along the horizontal direction stretching of film.The basalis that is used for present embodiment is characterised in that the thickness of Biaxially oriented polyester film is 100 μ m, and at least one surface of this film is 100 μ m with the thickness that copolymer polyester resin and urethane resin apply.Yet, be to use the film that is coated with by on the two sides of line painting method in this embodiment at basalis.
[embodiment 1]
The particulate filler A that adds in the raw material is that 2.0 weight % are (based on total 100 weight % of basalis and filler, hereinafter have same application) and the content of particulate filler A and filler B be 3 than (A/B), this potpourri is melted and extrudes that to produce thickness be the biaxial stretch-formed PET film of 100 μ m by said method.Subsequently, undercoat liquid is coated onto the two sides of basalis and constitutes undercoat and produce optical polyester film.
[embodiment 2]
With with embodiment 1 in identical method produce optical polyester film, just employed filler C has replaced filler B in raw material and the fill composition.
[embodiment 3]
With with embodiment 1 in identical method produce optical polyester film, just in raw material and fill composition except that the particulate filler A that uses 2.0 weight %, the content ratio (A/B) that also has its particulate filler A and filler B be 3 and the content ratio (A/C) of filler A and filler C be 3.
[embodiment 4]
With with embodiment 1 in identical method produce optical polyester film, just in raw material and fill composition, use the particulate filler A of 2.0 weight % not use filler B and filler C.
[comparative example 1]
With with embodiment 1 in identical method produce optical polyester film, just in raw material and fill composition, only use filler B and do not use particulate filler A.
[comparative example 2]
With with embodiment 1 in identical method produce optical polyester film, just in raw material and fill composition, only use filler C and do not use particulate filler A.
[comparative example 3]
With with embodiment 1 in identical method produce optical polyester film, just in raw material and fill composition, only use filler B and C and do not use particulate filler A.
[comparative example 4]
With with embodiment 1 in identical method produce optical polyester film, just in raw material and fill composition, do not use filler A, B and C.
[form 1]
[test case]
The mensuration of turbidity
Use ASTM D1003 method to measure turbidity.Described surveying instrument is the NDH-300A that is made by N/DENSHOKU.
The mensuration of operating performance
The mensuration of operating performance is to measure the operating characteristic of relevant film.On the test material platform, testing film is contacted face-to-face so that rub between film surface.In this case, the film dimensions of test, that top is 120mm (W) * 63mm (L), that following is 150mm (W) * 100mm (L).Rubbing under the speed 200g load-carrying situation with 150mm/min produces friction, and measures this friction.In this case, when numerical value equals and less than 0.50 the time, it is assessed as " good ", and when being assessed as " poor " greater than 0.50 the time.
The mensuration of planarization
Instrument shown in the accompanying drawing 2 is used to measure planarization.At first, film 1 that will be measured is placed to such an extent that closely contact with lower glass plate 2 and is opened illumination light in the back of acryloyl substrate 3, and the front surface of this plate has grid pattern, by being positioned at the film observation grille-like on the infrabasal plate.In this case, if the planarization of film is bad, be reflected and the grid line that demonstrates seems crooked.When the quantity of crooked grid equals and more than 10/m
2The time be evaluated as " poor ", and less than 10/m
2The time be evaluated as " good "
Mar-resistance
Double-shaft extension polyester film used for optical field with method manufacturing identical in embodiment and the comparative example is made 1m * 1m sample respectively.The rear surface of the irradiate light that 20W fluorescent light regulation produces sample thin film in the darkroom separately and detect cut on the film with this light subsequently.At this moment, the light source rear surface or the front surface that are positioned at film detects film surface.In this case, when being equal to or greater than the cut quantity that 1 μ m and length is equal to and greater than 2mm, the degree of depth is equal to or less than 100/m
2The time be evaluated as " good ", and more than 100/m
2The time, be evaluated as " poor ".
[form 2]
As shown in top form 2, wherein particulate filler A and filler B and/or filler C use jointly, also comprise the situation of only using particulate filler A, optical polyester film of the present invention has good operability, planarization and anti-zoned property and can keep almost identical with comparative example turbidity simultaneously.
Should be noted that the foregoing description is to specify the present invention, but do not limit the scope of the invention.Obviously, can make various modifications and change not breaking away under design of the present invention and the scope.
Claims (4)
1. optical polyester film, it is characterized in that, described film comprises basalis of being made by biaxially stretched polyester and at least one the lip-deep undercoat that adheres to basalis with binding resin, described basalis comprises that mean diameter is the particulate filler of 0.03 to 0.50 μ m, and the concentration that wherein forms solids content in the coating liquid of undercoat is 2 to 10 weight %.
2. mylar as claimed in claim 1 is characterized in that, described basalis also comprises the filler that mean diameter is 1.0 to 10.0 μ m.
3. mylar as claimed in claim 1 or 2 is characterized in that the turbidity of film is equal to or less than 1.5%.
4. mylar as claimed in claim 1 or 2 is characterized in that, the thickness of film is equal to or greater than 25 μ m.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR0076223/03 | 2003-10-30 | ||
| KR1020030076223A KR100783726B1 (en) | 2003-10-30 | 2003-10-30 | Polyester film for optical use |
| KR0076223/2003 | 2003-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1611967A CN1611967A (en) | 2005-05-04 |
| CN100419464C true CN100419464C (en) | 2008-09-17 |
Family
ID=34651251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100451430A Expired - Lifetime CN100419464C (en) | 2003-10-30 | 2004-04-05 | Polyeather film for optical use |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP2005133058A (en) |
| KR (1) | KR100783726B1 (en) |
| CN (1) | CN100419464C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582190A (en) * | 2012-03-12 | 2012-07-18 | 安徽国风塑业股份有限公司 | Optical biaxial oriented polyester base film and manufacturing method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4937550B2 (en) * | 2005-08-29 | 2012-05-23 | 富士フイルム株式会社 | Optical compensation sheet and manufacturing method thereof |
| CN101298203B (en) * | 2008-07-02 | 2011-09-07 | 中国乐凯胶片集团公司 | Transparent smooth polyester film and production method thereof |
| CN102497987B (en) * | 2009-09-17 | 2015-01-28 | 三菱树脂株式会社 | Biaxially-oriented polyester film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112052A (en) * | 1994-03-07 | 1995-11-22 | 代科化学工业株式会社 | Biaxially stretched polystyrene resin sheet |
| CN1237591A (en) * | 1998-06-03 | 1999-12-08 | 日本聚合化学株式会社 | Polyolefin resin composition and stretched film thereof |
| CN1357453A (en) * | 2000-12-08 | 2002-07-10 | 东洋纺绩株式会社 | Optical coated film |
| JP2002212526A (en) * | 2001-01-23 | 2002-07-31 | Nitto Denko Corp | Adhesive type optical film |
| JP2003292734A (en) * | 2002-04-03 | 2003-10-15 | Mitsui Chemicals Inc | Epoxy resin composition and optical part produced by using the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62241928A (en) | 1986-04-15 | 1987-10-22 | Teijin Ltd | White polyester film |
| JPH09202040A (en) * | 1996-01-26 | 1997-08-05 | Diafoil Co Ltd | Ink jet recording sheet and support body therefor |
| JP3687218B2 (en) * | 1996-09-19 | 2005-08-24 | 東レ株式会社 | Laminated polyester film |
| JP4320763B2 (en) * | 1999-02-22 | 2009-08-26 | 東洋紡績株式会社 | Easy adhesive film for optics |
| JP2000239623A (en) * | 1999-02-25 | 2000-09-05 | Mitsubishi Polyester Film Copp | Protective film for adhesive bond |
| JP2000246856A (en) | 1999-03-02 | 2000-09-12 | Toyobo Co Ltd | Optical easy-to-adhere film |
| JP2001247696A (en) * | 2000-03-03 | 2001-09-11 | Teijin Ltd | Polyester film for light diffusion plate |
| JP2002212317A (en) * | 2001-01-24 | 2002-07-31 | Teijin Ltd | Optical film and laminate |
| JP2003026826A (en) * | 2001-07-23 | 2003-01-29 | Fuji Photo Film Co Ltd | Polyester film for optics, hard-coated film and method for producing the same |
| JP2003211606A (en) * | 2002-01-17 | 2003-07-29 | Teijin Dupont Films Japan Ltd | Polyester film for mounting on molded member |
-
2003
- 2003-10-30 KR KR1020030076223A patent/KR100783726B1/en active IP Right Grant
-
2004
- 2004-03-09 JP JP2004065597A patent/JP2005133058A/en active Pending
- 2004-04-05 CN CNB2004100451430A patent/CN100419464C/en not_active Expired - Lifetime
-
2011
- 2011-07-01 JP JP2011147272A patent/JP5129875B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112052A (en) * | 1994-03-07 | 1995-11-22 | 代科化学工业株式会社 | Biaxially stretched polystyrene resin sheet |
| CN1237591A (en) * | 1998-06-03 | 1999-12-08 | 日本聚合化学株式会社 | Polyolefin resin composition and stretched film thereof |
| CN1357453A (en) * | 2000-12-08 | 2002-07-10 | 东洋纺绩株式会社 | Optical coated film |
| JP2002212526A (en) * | 2001-01-23 | 2002-07-31 | Nitto Denko Corp | Adhesive type optical film |
| JP2003292734A (en) * | 2002-04-03 | 2003-10-15 | Mitsui Chemicals Inc | Epoxy resin composition and optical part produced by using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582190A (en) * | 2012-03-12 | 2012-07-18 | 安徽国风塑业股份有限公司 | Optical biaxial oriented polyester base film and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1611967A (en) | 2005-05-04 |
| JP2005133058A (en) | 2005-05-26 |
| JP5129875B2 (en) | 2013-01-30 |
| JP2011231333A (en) | 2011-11-17 |
| KR100783726B1 (en) | 2007-12-07 |
| KR20050041164A (en) | 2005-05-04 |
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