CN100384617C - Smoothing method of film - Google Patents
Smoothing method of film Download PDFInfo
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- CN100384617C CN100384617C CNB2003101149710A CN200310114971A CN100384617C CN 100384617 C CN100384617 C CN 100384617C CN B2003101149710 A CNB2003101149710 A CN B2003101149710A CN 200310114971 A CN200310114971 A CN 200310114971A CN 100384617 C CN100384617 C CN 100384617C
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- liquid crystal
- acid
- foreign matter
- film roll
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Abstract
Provided is a film smoothing method for eliminating the deformation of a strip-like polymeric film yielded by foreign matter held to a film roll of the strip-like polymeric film. The film smoothing method includes a process (1) for unwinding the film roll of the strip-like polymeric film, a process (2) for removing the foreign matter on the surface of the film, a process (3) for winding the film to form the film roll and a process (4) for heat-treating the film roll obtained in the process (3).
Description
Technical field
The present invention relates to the smoothing method of banded macromolecule membrane.
Background technology
When being mingled with foreign matter between the thin layer of the banded macromolecule membrane that provides as film roll, the winding pressure that is produced by film roll makes foreign matter be compressed between the film, produces the convex-concave distortion thus on film.Also can residual distortion down even remove foreign matter from film.When on making the orientation substrate forms by macromolecule membrane, being coated with optical element used in the liquid crystal indicator that forms liquid crystal liquid crystal property macromolecule layer etc. etc. (for example opening flat 7-113993 communique) with reference to the spy, when deformation of thin membrane partly is coated with, produce the phenomenon of uneven thickness, cause optical defect thus.Foreign matter is mainly the powder that produces when film is cut into desired width, its diameter is tens of～hundreds of μ m, and produce on the film be deformed into hundreds of μ m～number mm.During coating liquid, the degree of crawling is number mm thereon.Because film roll reels tightly, the deformation of thin membrane that is caused by foreign matter occurs in and is being mingled with up and down on several layers of this foreign matter.When roller is extracted film out and is coated with, find every certain-length defectiveness on film.This defective makes the effective rate of utilization of optical element descend.
Summary of the invention
The method that the purpose of this invention is to provide the deformation of thin membrane of the foreign matter generation that is mingled with on the film roll of a kind of elimination by banded macromolecule membrane.
The present invention the 1st aspect relates to a kind of film smoothing method, it is characterized in that comprising successively (1) step to the film roll enforcement uncoiling of banded macromolecule membrane, (2) remove the step of this film surface foreign matter, (3) step of this film formation film roll of wraparound and (4) are to the film roll step of heat treatment by step (3) gained.
The feature of the present invention the 2nd aspect be aspect the of the present invention the 1st in, the winding tension of the film roll of described step (3) is 10～200N/m.
The feature of the present invention the 3rd aspect is in the of the present invention the 1st or the 2nd either side, and the heat treatment temperature of described step (4) is 30～120 ℃, and the time is 1～50 hour.
The accompanying drawing simple declaration
Fig. 1 is for implementing the schematic drawing of of the present invention one embodiment that installs.
Fig. 2 is the schematic drawing of annealing device of the present invention.
The working of an invention mode
Can be used for film of the present invention is macromolecule membrane, preferably uses any in the single or multiple lift.In addition, also can use the laminated body of other materials such as macromolecule membrane and metal film, on macromolecule membrane, be formed with the product of metal level, perhaps on macromolecule membrane, be formed with the product of filming of other material etc. by modes such as evaporations.Can adopt suitable method to make film according to macromolecular material and purposes.In addition, also can implement to extend processing to film.
As the material that is used for macromolecule membrane of the present invention, can be the polyamide of nylon etc.; Polyimides; Polyamidoimide; Polyesterimide; PEI; Polyether-ketone; Polyether-ether-ketone; Polyketone; Polyether sulfone; The polyhenylene thioether; The polyphenyl oxide; The polyester of PETG, poly-naphthoic acid glycol ester etc.; Polyacetals; Merlon; Polyacrylate; Polymethacrylates; Primary cellulose acetate; Polyolefin; Polystyrene; Polyvinyl chloride; Polyvinylidene chloride; Teflon (login trade mark); Polyvinyl alcohol etc.
The width of film, thickness can suitably determine according to purposes, but width at 10mm～5000mm, thickness at 1～10000 μ m, preferably in the scope of 1～200 μ m.The length of film can be suitably determined in the operation etc. of considering roller, and is preferred usually in the degree of 10000m.
Followingly method of the present invention is described with reference to accompanying drawing.Fig. 1 is the schematic drawing of device one example of enforcement the inventive method.In the figure, 1 is untreated film roll, extracts film from here out by conveying roller 2 and adhesive roller 3 and 4, removes two lip-deep foreign matters of film thus.As adhesive roller, be preferably the pair roller surface and have weak close-burning rubber rollers.Although be that to remove foreign matter with adhesive roller be that example describes in the drawings, also can adopt in addition rotating brush, air-brush, supersonic dust removal, attraction and other suitable method to remove foreign matter.
Residual the convex-concave distortion that is produced by foreign matter again with this winding film, forms film roll 5 on the film of having removed foreign matter.Then film roll is heat-treated.Fig. 2 is the schematic drawing that is used for annealing device one example of the present invention.Film roll is left standstill, or film often or intermittently is contained in the annealing device 6 rotatably.On annealing device, can suitably be provided with the support film roller with or keep rotating member, heater or hot air blow port, other is means and the member of keeping the heating-up temperature homogeneous of film roll.
If in heat treatment step,, then can alleviate deformation of thin membrane, make film level and smooth to the film heating.The winding pressure of the film roll that is provided when heat treatment must be suitable.If winding pressure is too tight, then can not alleviate deformation of thin membrane effectively, and produce to curl fold or residual foreign matter make film produce new distortion.On the other hand, if pine then produce the dislocation of reeling too.The coiling degree is regulated by the winding tension in the step (3).The scope of preferred winding tension is 10～200N/m.10～100N/m more preferably.
, time low when heat treated temperature can not fully be alleviated deformation of thin membrane in short-term.On the other hand, heat treated temperature height, time may produce the danger that film adds thermal deformation or film roll distortion when long.Whether heat treated temperature and time extends according to material, the film of macromolecule membrane and degree is determined its condition.For example, during for polyhenylene thioether film, only is to heat 10～20 hours down at 50～60 ℃.During for the primary cellulose acetate film, preferably heated 5～20 hours down at 30～60 ℃.During for pet film, preferably heated 5～20 hours down at 30～50 ℃.
The fine foreign matter that can not excise fully in step (2) when the wraparound film forms film roll in step (3), may have the danger that foreign matter produces new deformation of thin membrane as residual same as before.For preventing this phenomenon, preferably on the end of band-like film width or single face at least in its vicinity, form convex-concave portion.This mode also is known as annular knurl and handles (Knurling).Convex-concave portion can be arbitrary shape, for example is wire or point-like convex-concave portion, is formed by row or multiple row embossing.The average height of the aspect ratio film of protuberance is higher, so the end of film roll is when being reeled strong, and central portion is reeled by loose ground, and contains air layer.Thus, even between film, there is residual foreign matter, can between film and foreign matter, not apply the pressure that makes the deformation of thin membrane degree yet.In addition, by there being convex-concave portion on the end that makes the thin-film width direction,, can preventing that also film roll from being forbidden and lateral shift spending, and can prevent to produce scratch and frictional electrification even take low winding tension in the present invention.
The film that adopts the inventive method to handle, its defective is considerably less and be the film of dead smooth.During to accurate coating such as the film of this film embodiment such as emulsion, tape or liquid crystal aligning processing etc., obtain the few optical element of optical defect.Therefore, having implemented the film of processing method of the present invention, is useful when the various optical thin films that have in the various displays that make photographic base materials or LCD, plasma display, EL display etc. and substrate film etc. for example.More specifically, be to be very useful passing when forming oriented layer on this film or handle obtainable cholesteric film, holographic film, Polarizer, colored Polarizer, phasic difference plate, colorimetric compensation film, the film that improves the visual angle, the film that improves briliancy, antireflective film, optically-active film such as back coating fluid crystallinity macromolecule etc. at implementation orientation.
As such liquid crystal liquid crystal property macromolecule; can exemplify out the condensation class liquid crystal polymer that forms by compound condensation with carboxyl, alcohol radical, phenylol, amino, sulfenyl etc.; to have liquid crystal compounds that acryloyl group, methacryl, vinyl, pi-allyl etc. have two keys etc. is the liquid crystal liquid crystal property ethene polymers that raw material makes; by synthetic liquid crystal liquid crystal property polysiloxanes such as the liquid-crystal compounds with alkoxysilane group, by synthetic liquid crystal liquid crystal property epoxy resin such as the liquid crystal compounds with epoxy radicals and the high molecular compound of above-mentioned liquid crystal liquid crystal property etc.In above various liquid crystal liquid crystal property macromolecules, from the viewpoint of optical characteristics of gained liquid crystal liquid crystal property macromolecule membrane etc., most preferably condensation class liquid crystal polymer.
Condensation class liquid crystal polymer can adopt proper method that two common functional monomer's condensations are obtained.As this two functional monomer, be preferably two functional monomers with aromatic series or cyclohexane, can exemplify out two amines of phenylenediamine etc. particularly, quinhydrones, the 2-methylnaphthohydroquinone, resorcinol, catechol, the 4-methyl pyrocatechol, the 4-tert-butyl catechol, 2, the glycols of 3-dihydroxy naphthlene etc., 1,4-phenylene two mercaptan, 1, the dithiols of 2-phenylene two mercaptan etc., salicylic acid, the 3-Para Hydroxy Benzoic Acid, the 4-Para Hydroxy Benzoic Acid, 3-hydroxyl-2-naphthoic acid, 6-hydroxyl-2-naphthoic acid, the hydroxycarboxylic acid of 7-hydroxyl-2-naphthoic acid etc., the amino benzoic acid of 2-, the amino benzoic acid of 3-, the amino acids of the amino benzoic acid of 4-etc., phthalic acid, isophthalic acid, terephthalic acids, 1, the 4-naphthalene dicarboxylic acids, 2, the 6-naphthalene dicarboxylic acids, 2, the 7-naphthalene dicarboxylic acids, 4,4 '-diphenyl dicarboxylic acid, 4,4 '-stilbene dicarboxylic acids, 1, the omega-dicarboxylic acids of 4-cyclohexane dicarboxylic acid etc.Wherein most preferably contain as the hydroxyl composition, with the catechol unit serve as must construction unit condensation class liquid crystal liquid crystal property macromolecule.
When preparation condensation class liquid crystal liquid crystal property macromolecule, in the degree of not damaging liquid crystal liquid crystal property, can in raw materials used monomer, add for example oxalic acid, fumaric acid, butanedioic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, the aliphatic dicarboxylic acid class of decanedioic acid etc., ethylene glycol, propane diols, butanediol, pentanediol, hexylene glycol, heptandiol, ethohexadiol, nonanediol, the aliphatic diol class of decanediol etc., diaminoethanes, diaminopropanes, diaminobutane, the diaminourea pentane, diamino hexane, the diaminourea heptane, the diaminourea octane, the diaminourea nonane, the aliphatic diamine class of diamino decane etc., glycolic acid, hydracrylic acid, hydroxybutyric acid, hydroxypentanoic acid, hydroxycaproic acid, the hydroxyl enanthic acid, Hydroxyoctanoic acid, the hydroxyl n-nonanoic acid, the aliphatic hydroxyl carboxylic acids of hydroxydecanoic acid etc. etc.
In addition, for the end to the liquid crystal liquid crystal property high polymer main chain as required carries out modification, can in starting monomer, add simple function monomer or trifunctional monomer.Can enumerate the monomer that has a carboxyl, amino, alcohol radical, phenylol, mercapto etc. in the molecule as the simple function monomer, for example be aromatic carboxylic acid class, aliphatic carboxylic acid class, aromatic amine, aliphatic amine, phenol, aliphatic phenol.In addition, can enumerate for example trimellitic acid, dihydroxy benzoic acid, hydroxybenzoic acid, benzenetricarboxylic acid, PMA etc. as the trifunctional monomer.
Make these monomer condenses obtain condensation class liquid crystal liquid crystal property macromolecule, be in particular the method that obtains liquid crystalline polyester and be not particularly limited, can suitably adopt the known any method in this field.For example can adopt arbitrarily by make carboxylic acid become sour halide or in the presence of the dicyclohexyl carbon imidodicarbonic diamide etc. with the carboxylic acid activation after, make method that itself and alcohol, amine etc. react, pass through after the phenol acetic esterization, make itself and carboxylic acid reaction the synthetic method of taking off acetic acidreaction, make carboxylic acid become carboxylate as methyl esters after, in the presence of needed suitable catalyst, make it with the synthetic method of the dealcoholization of alcohol reaction etc.
In liquid crystal liquid crystal property macromolecule of the present invention, aforesaid condensation class liquid crystal liquid crystal property macromolecule can use separately, in addition, also can use 2 kinds or 3 kinds or the above high molecular mixture of condensation class liquid crystal liquid crystal property.In addition, in the scope of not damaging effect of the present invention, can suitably mix the various liquid crystal liquid crystal property macromolecules that use optically active liquid crystal macromolecule, liquid crystal liquid crystal property ethene polymers, liquid crystal liquid crystal property polysiloxanes, liquid crystal liquid crystal property epoxy resin etc. or non-liquid crystal polymer etc.
Embodiment
Below adopt embodiment that the present invention is specifically described, but the present invention is not subjected to the restriction of these embodiment.
Various analytical methods used among reference example and the embodiment are as follows.
(1) mensuration of liquid crystal liquid crystal property macromolecule logarithm viscosity
Adopt Wu Bailuode type viscosimeter, in the mixed solvent of phenol/tetrachloroethanes (60/40 weight ratio), measure at 30 times.
(2) observation of defective
Adopt the BH2 petrographic microscope of Olympus Optical (strain) system to carry out defects detection (detecting) in number.
What (3) the liquid crystal liquid crystal property macromolecule was formed determines
Liquid crystalline polyester is dissolved in the heavy-hydrogenated chloroform, adopts 400MHz's
1H-NMR (JNM-GX400 that NEC makes) measures, and determines its composition.
[embodiment 1]
Making by conveying roller 2 is that 60 μ m, width are that 400mm, length are that two surfaces of the film extracted out of the film roll 1 of polyether-ether-ketone (PEEK) system of 1000m contact with the adhesive roller 3,4 that butyl rubber makes from thickness, removes foreign matter thus.Adopt the winding tension of 400N/400m that this winding film is become film roll 5.On the two ends of the width of this film, form 3 protuberances respectively.The average height of protuberance is 30 μ m.Then this film roll is placed in the annealing device 6, is blown into hot blast and makes temperature maintenance, implement 24 hours heat treatment at 50 ℃ ± 10 ℃.The mixed liquor of butyl cellosolve and N-N-methyl-2-2-pyrrolidone N-), and dry, curing be to determine the smoothing effect, adopt comma shape coating machine on this film, be coated with the polyimide solution that 20 μ m are thick, viscosity is 5cP (5% solution, solvent:.The film that being formed with of gained filmed is checked the 0.1/1m of defective number average out to that it is caused by the film convex-concave
2, its mean size is 0.1mm.
For comparing, to not implementing processing method of the present invention with a collection of film, and be coated with above-mentioned polyimide solution and make its curing with film roll 1, when it is checked, 20/1m of defective number average out to
2, its mean size is 0.3mm.
(reference example)
Synthesize the liquid crystal liquid crystal property polymer substance (logarithm viscosity=0.22dl/g, Tg=61 ℃) of formula (1) and comprise (R)-3-methyl hexane-1 of formula (2), and the optically active liquid crystal polymer substance of 6-diol units (logarithm viscosity=0.17dl/g).
The synthetic of these macromolecular materials is in the o-dichlorohenzene solvent, under triethylamine coexistence, makes the react enforcement of the sour chloride corresponding with dicarboxylic acid units and diol compound.
The liquid crystal liquid crystal property macromolecule of the 18.1g formula (1) of gained and the liquid crystal liquid crystal property macromolecule mixture of 1.9g formula (2) are dissolved in the 80g N-methyl pyrrolidone preparation liquid crystal liquid crystal property Polymer Solution.
Formula (1)
Formula (2)
*Expression optical activity carbon
[embodiment 2]
Extracting thickness by conveying roller 2 out from film roll 1 is that 60 μ m, width are that 400mm, length are the orientation substrate film of polyether-ether-ketone (PEEK) system of 1000m, and two surfaces of this film are contacted with the adhesive roller 3,4 that butyl rubber is made, and removes foreign matter thus.Adopt the winding tension of 400N/ thin-film width (400mm) that this winding film is become film roll 5.On the two ends of this thin-film width direction, handle by annular knurl in advance and form 3 protuberances respectively.The average height of protuberance is 30 μ m.Then this film roll is placed in the annealing device 6, is blown into hot blast and makes temperature maintenance, implement 24 hours heat treatment at 50 ℃ ± 10 ℃.For determining the smoothing effect, being the 45 degree with respect to this film length direction rubs to this film, carry out drying after adopting the liquid crystal liquid crystal property Polymer Solution of gained in the roll coater coating reference example then, and 200 ℃ of following heat treated 15 minutes, the liquid crystal liquid crystal property macromolecule is orientated, further be cooled to room temperature, liquid crystal structure is fixed.The thickness of the liquid crystal liquid crystal property macromolecule layer that forms on the orientation substrate film that PPS makes is 5 μ m.On liquid crystal liquid crystal property macromolecule layer surface, be coated with the ultraviolet hardening binding agent then, on fitting in non-involvement air ground mode on this adhesive layer be after 400mm, thickness are the light-transmitting substrate film that forms of the plain triacetate of ribbon-like fibre of 80 μ m by width, with the scheduled volume irradiation ultraviolet radiation, adhesive layer is solidified from this light-transmitting substrate film top.Peel off the orientation substrate film from the laminate film with orientation substrate film/liquid crystal liquid crystal property macromolecule layer/cured binders layer/light-transmitting substrate film layer structure of gained thus, obtain the liquid crystal liquid crystal property macromolecule layer and be transferred to laminate film on the light-transmitting substrate film by solidifying the cohesive agent.The spy that the details of this manufacture method is applied for the applicant opens in the flat 7-113993 communique and has been described in detail.
The liquid crystal liquid crystal property macromolecule layer of gained laminate film is carried out the defects detection that caused by the film convex-concave, 0.1/1m of its defective number average out to
2, its mean size is 0.1mm.
The invention effect
According to the inventive method, can eliminate be mingled with on the film roll by banded macromolecule membrane different The deformation of thin membrane of deposits yields. Be coated with at the orientation substrate of making for being formed by macromolecule membrane When forming the optical element in the liquid crystal indicator etc. of liquid crystal liquid crystal property macromolecule layer etc., can obtain not having The excellent film of defective.
Claims (1)
1. film smoothing method, it is characterized in that comprising successively (1) step to the film roll enforcement uncoiling of banded macromolecule membrane, (2) remove the step of this film surface foreign matter, (3) form the step of film roll and (4) to carry out the heat treated step of 5～24 hours time 30～60 ℃ of temperature by the film roll of step (3) gained with this film of winding tension 10～200N/m wraparound.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP332664/2002 | 2002-11-15 | ||
| JP2002332664A JP2004167688A (en) | 2002-11-15 | 2002-11-15 | Film smoothing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1500619A CN1500619A (en) | 2004-06-02 |
| CN100384617C true CN100384617C (en) | 2008-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101149710A Expired - Fee Related CN100384617C (en) | 2002-11-15 | 2003-11-14 | Smoothing method of film |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004167688A (en) |
| CN (1) | CN100384617C (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847033A (en) * | 1988-02-16 | 1989-07-11 | Eastman Kodak Company | Process for improving dimensional stability of polymeric films useful in optical disk assemblies |
| JPH08142209A (en) * | 1994-11-18 | 1996-06-04 | Fuji Photo Film Co Ltd | Improvement of flatness of thermoplastic film |
| JPH10180784A (en) * | 1996-12-26 | 1998-07-07 | Nippon Petrochem Co Ltd | Rolling method of plastic film |
| WO1999013379A1 (en) * | 1997-09-11 | 1999-03-18 | Mikkelsen Oeystein | Polishing roll and method for making same |
| JP2000042470A (en) * | 1998-07-31 | 2000-02-15 | Teijin Ltd | Method and apparatus for manufacturing plastic film |
| CN1293107A (en) * | 1999-10-01 | 2001-05-02 | 富士摄影胶片株式会社 | Deformed correcting method and cutting method, deformed correcting and cutting devices for thin sheet body |
| CN1300250A (en) * | 1998-04-24 | 2001-06-20 | 吴羽化学工业株式会社 | Heat-shrinkable multiplayer film |
| US20020008015A1 (en) * | 2000-07-24 | 2002-01-24 | Mamoru Kosakai | Plastic film electrostatic adsorption apparatus and electrostatic adsorption method |
| JP2002254513A (en) * | 2001-02-28 | 2002-09-11 | Mitsuboshi Belting Ltd | Apparatus for embossing rubber sheet and method for manufacturing rubber sheet |
-
2002
- 2002-11-15 JP JP2002332664A patent/JP2004167688A/en active Pending
-
2003
- 2003-11-14 CN CNB2003101149710A patent/CN100384617C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847033A (en) * | 1988-02-16 | 1989-07-11 | Eastman Kodak Company | Process for improving dimensional stability of polymeric films useful in optical disk assemblies |
| JPH08142209A (en) * | 1994-11-18 | 1996-06-04 | Fuji Photo Film Co Ltd | Improvement of flatness of thermoplastic film |
| JPH10180784A (en) * | 1996-12-26 | 1998-07-07 | Nippon Petrochem Co Ltd | Rolling method of plastic film |
| WO1999013379A1 (en) * | 1997-09-11 | 1999-03-18 | Mikkelsen Oeystein | Polishing roll and method for making same |
| CN1300250A (en) * | 1998-04-24 | 2001-06-20 | 吴羽化学工业株式会社 | Heat-shrinkable multiplayer film |
| JP2000042470A (en) * | 1998-07-31 | 2000-02-15 | Teijin Ltd | Method and apparatus for manufacturing plastic film |
| CN1293107A (en) * | 1999-10-01 | 2001-05-02 | 富士摄影胶片株式会社 | Deformed correcting method and cutting method, deformed correcting and cutting devices for thin sheet body |
| US20020008015A1 (en) * | 2000-07-24 | 2002-01-24 | Mamoru Kosakai | Plastic film electrostatic adsorption apparatus and electrostatic adsorption method |
| JP2002254513A (en) * | 2001-02-28 | 2002-09-11 | Mitsuboshi Belting Ltd | Apparatus for embossing rubber sheet and method for manufacturing rubber sheet |
Non-Patent Citations (2)
| Title |
|---|
| 流延PP薄膜工艺介绍. 张家仁.塑料包装，第7卷第3期. 1997 |
| 流延PP薄膜工艺介绍. 张家仁.塑料包装，第7卷第3期. 1997 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004167688A (en) | 2004-06-17 |
| CN1500619A (en) | 2004-06-02 |
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