CN102791466B - Foreign matter removing method in tenter frame apparatus and tenter frame apparatus and solution film-forming equipment - Google Patents
Foreign matter removing method in tenter frame apparatus and tenter frame apparatus and solution film-forming equipment Download PDFInfo
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- CN102791466B CN102791466B CN201180013137.5A CN201180013137A CN102791466B CN 102791466 B CN102791466 B CN 102791466B CN 201180013137 A CN201180013137 A CN 201180013137A CN 102791466 B CN102791466 B CN 102791466B
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- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 10
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- 239000000314 lubricant Substances 0.000 description 3
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- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
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- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 2
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- 239000000470 constituent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
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- 239000012046 mixed solvent Substances 0.000 description 2
- 125000005185 naphthylcarbonyl group Chemical group C1(=CC=CC2=CC=CC=C12)C(=O)* 0.000 description 2
- 125000002811 oleoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
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- 125000003696 stearoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- BGHCVCJVXZWKCC-UHFFFAOYSA-N Tetradecane Natural products CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
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- 230000001070 adhesive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- DCAYPVUWAIABOU-UHFFFAOYSA-N alpha-n-hexadecene Natural products CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
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- 239000000975 dye Substances 0.000 description 1
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- 238000001704 evaporation Methods 0.000 description 1
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- 239000000194 fatty acid Substances 0.000 description 1
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- IIYFAKIEWZDVMP-UHFFFAOYSA-N linear paraffin C13 Natural products CCCCCCCCCCCCC IIYFAKIEWZDVMP-UHFFFAOYSA-N 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 125000002801 octanoyl group Chemical group C(CCCCCCC)(=O)* 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BAZVSMNPJJMILC-UHFFFAOYSA-N triadimenol Chemical compound C1=NC=NN1C(C(O)C(C)(C)C)OC1=CC=C(Cl)C=C1 BAZVSMNPJJMILC-UHFFFAOYSA-N 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 125000003774 valeryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/20—Edge clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0034—Polarising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Abstract
The state conveying that film in pin stenter of the present invention is supported by pin (72) and needle plate (73) with both side ends.Pin (72) and needle plate (73), when the supporting of release film, are sent to and spray wind washing zone (83).Spray in wind washing zone (83), pin (72) and needle plate (73) are covered by chamber (202).In chamber (202), wind is sprayed to pin (72) and needle plate (73) ejection.By spraying this injection wind, the foreign matter of the additive comprising film through the material of liquefaction or solidification or the punching dregs that produce when being inserted in film by pin (72) etc. is removed from pin (72) and needle plate (73).Foreign matter is discharged to chamber (202) outward via suction nozzle.
Description
Technical field
The present invention relates to while carry out stretching while make the foreign matter removing method in the tenter frame apparatus of its drying and tenter frame apparatus to film with certain rate of widening under the state of the both side ends supporting film.The invention still further relates to the solution film-forming equipment possessing this tenter frame apparatus.
Background technology
Polymer film, owing to having excellent light transmission and flexibility and can light weight filming, is thus used in many-side as optical functional film.Wherein, the cellulose esters mesentery employing acylated cellulose etc., except aforesaid characteristic, also has obdurability and low birefringence.This cellulose esters mesentery for representative, is used as the member of formation of liquid crystal indicator (LCD) that market in recent years expands to some extent and the diaphragm of polarizer or optical compensation films with picture photosensitive film.
As one of the manufacture method of polymer film, enumerate solution film-forming method.By this solution film-forming method, first the dope comprising polymer and solvent is cast on supporter from curtain coating mould, forms casting films.Then, after casting films has self-supporting, casting films is peeled off as moistening film from supporter.Then, stenter is utilized to carry this moistening film to keep the state of the both side ends of moistening film (hereinafter referred to as " edge ").In addition, in stenter, for the moistening film in conveying, while the edge that stretches in the direction of the width, implement drying by ejection dry wind.Thus, film is obtained.Then, after the edge of film being blocked, utilize drying device to carry out drying further.Be taken up device through the film of drying device to batch.
The drying of the moistening film in stenter is carried out as follows: the both side ends utilizing clip or pin etc. to support unit supported film is walked to make it, to the film ejection dry wind in this walking.On the other hand, support unit to be fixed on the annular movement bodies such as chain and to make its walking that circulates.Therefore, when near tenter outlet utilize be exposed to reach a high temperature in high temperature drying wind support unit again supported film time, because the boiling of the solvent in film causes foaming, sometimes cause film to block.In addition, utilize cooling gel to make it have in the solution film-forming method of self-supporting, utilize the needle plate supported film possessing pin.If the temperature of pin is very high, then when pin enters in film, there is solidification and peel off in the resin covering pin front end, becomes the powder of hat shape, become and cause foreign matter fault or abrasive reason.In order to prevent this problem, before supported film both side ends, it is made to be cooled (such as with reference to patent document 1) supporting unit by cooling duct.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 9-85846 publication
Summary of the invention
Invent problem to be solved
But, owing to arranging cooling duct, create new problem.The solvent gas evaporated from moistening film is filled with in stenter.Under high-temperature atmosphere in stenter, the plasticizer in moistening film or UV agent (ultra-violet absorber) are evaporated with solvent, and they have also been mixed in solvent gas.This solvent gas along with clip or needle plate movement and go together in cooling duct.There is liquefaction or solidification due to the cooling of this cooling duct in the solvent gas entering cooling duct, is attached on pin or needle plate as foreign matter.The additive such as plasticizer or UV agent much made an addition in dope is comprised in this foreign matter.When the accumulating amount of this foreign matter increases, very large burden is applied to needle plate.And, when foreign matter is deposited on conveying deflector roll used in the conveying of needle plate or its bearing used, the conveying stably cannot carrying out film can be become.
In the face of above problem, the countermeasure such as expect importing the plasticizer that is difficult to evaporate or UV agent, the baking temperature low temperature of stenter, the drying of stenter are changed for a long time.But owing to seeking these countermeasures, the quality creating the film after manufacture changes or spends the new problems such as unnecessary cost, not preferably.In addition, the foreign matter removing using brush etc. to be attached on needle plate is also expected.But, when repeatedly carrying out the removing of foreign matter, have brush to block or the foreign matter that once removed is attached to the first-class problem of needle plate again.In addition, existence is had cannot to sweep the problems such as the part of the foreign matter of attachment with brush.
In stenter, utilize the recycling design from the solvent gas in this stenter such as condensation recovery or absorption recovery, the gas eliminating this solvent is delivered in stenter again.Recovered plasticizer or UV agent etc. while the recovery of this solvent.But, even if the foreign matter amount using the method also cannot make to be attached on needle plate etc. is zero.
In addition, expect using washer solvent to wash needle plate etc.But, have not only clean result difference but also the oil component of the lubricant as conveying deflector roll or bearing is dissolved such problem due to the solvent of this washing.And, when this washer solvent evaporates in stenter, there is the problem that the recovery that must carry out this washer solvent is such.Therefore, the production line of stopper film termly, washs needle plate etc. offline before this.
And then, in pin stenter, except described above except the foreign matter produced in cooling duct, punching dregs produced when inserting a needle in film or remain in the foreign matters such as burr around pin when being extracted from film by pin and also can adhere to, be deposited on needle plate.This foreign matter is same with the above-mentioned foreign matter produced in cooling duct, not only hampers the stable conveying of film, also can become one of reason causing the in-process in pin stenter 13 to pollute.Meanwhile, these foreign matters, when being mixed in film, likely affect the quality of film.
The object of the present invention is to provide the foreign matter removing method in the foreign matter removing of the conveying by hindering film, the tenter frame apparatus making the conveying of film stable and tenter frame apparatus and solution film-forming equipment.
For the means of dealing with problems
In order to reach above-mentioned purpose, tenter frame apparatus of the present invention possesses and supports component, loopy moving portion, stretching/drying section, chamber, injection wind blowing unit and foreign matter discharge portion.Support the both side ends that component supports the film in conveying.Loopy moving portion makes the above-mentioned component that supports support loopy moving between interval and release interval.The above-mentioned interval that supports is the above-mentioned interval supporting component and support above-mentioned film.Above-mentioned release interval above-mentionedly supports the interval supported that component discharges above-mentioned film.Stretching/drying section sprays dry wind by stretching to the above-mentioned film supported in interval with certain rate of widening simultaneously, makes it dry.By making the above-mentioned component that supports gradually move on the direction that above-mentioned film is widened, carry out above-mentioned stretching.To cover in above-mentioned release interval above-mentioned supports component for chamber.Spraying wind blowing unit by spraying injection wind to by the above-mentioned component that supports in above-mentioned chamber, the above-mentioned foreign matter removing supported on component will be attached to.Above-mentioned foreign matter is expelled to outside above-mentioned chamber by foreign matter discharge portion.
In tenter frame apparatus, above-mentioned foreign matter discharge portion preferably aspirates above-mentioned foreign matter in upstream side suction chamber and downstream suction chamber, above-mentioned upstream side suction chamber is arranged at the upstream side of above-mentioned injection wind blowing unit relative to the above-mentioned moving direction supporting component, above-mentioned downstream suction chamber is arranged at the downstream of above-mentioned injection wind blowing unit, is discharged to outside above-mentioned chamber by aspirated foreign matter via the discharge nozzle being arranged on above-mentioned upstream side suction chamber and downstream suction chamber with above-mentioned injection wind.Above-mentioned upstream side suction chamber and downstream suction chamber are preferably in negative pressure state.
Tenter frame apparatus preferably possesses sprays wind circulation portions, injection wind discharge portion and control part.Spray wind circulation portions by reclaiming being sprayed onto the above-mentioned injection wind supported on component in above-mentioned chamber, being back in above-mentioned chamber by reclaimed injection wind, injection wind is circulated.Spray the part that wind discharge portion discharges the injection wind reclaimed.Control part, by regulating the air quantity of the injection wind discharged by above-mentioned injection wind discharge portion, controls the temperature being sprayed onto the above-mentioned injection wind supported on component.
Solution film-forming equipment of the present invention possesses supporter and tenter frame apparatus.Above-mentioned supporter curtain coating has dope, forms casting films.Above-mentioned dope comprises polymer, solvent and additive.The moistening film as above-mentioned casting films peeled off from above-mentioned supporter stretches by above-mentioned tenter frame apparatus in the direction of the width, carries out drying simultaneously, make film by the ejection of dry wind.Above-mentioned tenter frame apparatus comprises and supports component, loopy moving portion, chamber, injection wind blowing unit and foreign matter discharge portion.Support the both side ends of component to the film in conveying to support.Loopy moving portion makes the above-mentioned component that supports support loopy moving between interval and release interval.The above-mentioned interval that supports is the above-mentioned interval supporting component and support above-mentioned film.Above-mentioned release interval above-mentionedly supports the interval supported that component discharges above-mentioned film.To cover in above-mentioned release interval above-mentioned supports component for chamber.Spray wind blowing unit by spraying injection wind to by the above-mentioned component that supports in above-mentioned chamber, foreign matter is removed from above-mentioned supporting component.Foreign matter discharge portion by above-mentioned foreign matter along with above-mentioned injection wind is expelled to outside above-mentioned chamber together.
Above-mentioned foreign matter comprises above-mentioned additive through the material liquefied or solidify.
Above-mentioned foreign matter be included in start or discharge in the above-mentioned dregs that produce when supporting the supporting of component and burr at least any one.
In solution film-forming equipment, above-mentioned tenter frame apparatus preferably comprises separation unit and the pipe arrangement that has a down dip.Above-mentioned foreign matter is separated with above-mentioned injection wind by separation unit.The pipe arrangement that has a down dip is arranged to make the mode gradually reduced to above-mentioned separation unit from above-mentioned foreign matter discharge portion, and the foreign matter from above-mentioned foreign matter discharge portion is delivered to above-mentioned separation unit.
In solution film-forming equipment, above-mentioned tenter frame apparatus preferably comprises sprays wind circulation portions, injection wind discharge portion and control part.Spray wind circulation portions by reclaiming being sprayed onto the above-mentioned injection wind supported on component in above-mentioned chamber, being returned in above-mentioned chamber by reclaimed injection wind, injection wind is circulated.Spray the part that wind discharge portion discharges the injection wind reclaimed.Control part, by regulating the air quantity of the injection wind discharged by above-mentioned injection wind discharge portion, controls the temperature being sprayed onto the above-mentioned injection wind supported on component.The temperature of above-mentioned injection wind is controlled the scope for the temperature of fusing point and the heat resisting temperature lower than the various equipment in above-mentioned tenter frame apparatus exceeding above-mentioned additive by above-mentioned control part.
The temperature of above-mentioned injection wind preferably controls to be more than 49 DEG C and the heat resisting temperature that is less than 120 DEG C of various equipment in above-mentioned tenter frame apparatus.
Above-mentioned tenter frame apparatus preferably has pin and is embedded with the needle plate of this pin multiple as the above-mentioned pin stenter supporting component.
Foreign matter removing method in tenter frame apparatus of the present invention possesses loopy moving step, stretching/drying section step, sprays wind ejection step and foreign matter discharge step.In loopy moving step, the above-mentioned component that supports is made to support loopy moving between interval and release interval.The above-mentioned interval that supports utilizes the interval supporting the both side ends of component to the film in conveying and support.Above-mentioned release interval is that release utilizes the above-mentioned interval supported supporting component and carry out above-mentioned film.In stretching/drying section step, with certain rate of widening, the above-mentioned film supporting interval is stretched, spray dry wind simultaneously, thus be dried.Above-mentioned stretching is gradually moved carry out by being made the above-mentioned component that supports on the direction that above-mentioned film is widened.Spraying in wind ejection step, by spraying wind to by the component ejection that supports in above-mentioned chamber in the above-mentioned chamber supporting component in the above-mentioned release interval of covering, the above-mentioned foreign matter removing supported on component will be attached to.Foreign matter is discharged in step, is discharged to outside above-mentioned chamber by above-mentioned foreign matter.
The effect of invention
Can the foreign matter removing of the conveying obstacle of film be become by the present invention, the conveying of film is stablized.
Accompanying drawing explanation
Fig. 1 is the schematic diagram representing solution film-forming equipment.
Fig. 2 is the top view representing pin stenter of the present invention.
Fig. 3 is the front view representing pin stenter of the present invention.
Fig. 4 is the sectional view of guide rail, guide cover and needle rack.
Fig. 5 is the sectional view representing the guide rail being engaged the interlocking pattern of ditch of sprocket and needle rack, guide cover and needle rack.
Fig. 6 is the VI-VI line sectional view of Fig. 3.
Fig. 7 is the VII-VII line sectional view of Fig. 3.
Fig. 8 is the VIII-VIII line sectional view of Fig. 3.
Fig. 9 is the IX-IX line sectional view of Fig. 3.
Figure 10 is the sectional view of guide rail, guide cover and the needle rack represented in the 1st cooled region.
Detailed description of the invention
1st embodiment of the present invention is described.As shown in Figure 1, solution film-forming equipment 10 is made up of curtain coating room 11, transfer portion 12, pin stenter 13, clip stenter 14, trimming device 15, drying device 16, cooling device 17 and devices for taking-up 18.
Feed head 21, casting drum 22, curtain coating mould 23, stripper roll 26, condenser (condenser, condenser) 27 and retracting device 28 is possessed in curtain coating room 11.Feed head 21 sends into the dope from dope manufacturing equipment 20.Casting drum 22 is supporters of cast dope.Dope is cast to casting drum 22 by curtain coating mould 23.Casting films 24 on casting drum 22 is peeled off as moistening film 25 by stripper roll 26.Condenser 27 carries out condensation liquefaction to the solvent gas evaporated by casting films 24 and moistening film 25.Retracting device 28 reclaims the solvent liquefied.In addition, casting drum 22 connects heat-conducting medium feedway (omitting diagram).By heat-conducting medium being supplied to the inside of this heat-conducting medium feedway, the surface temperature of casting drum 22 is adjusted to temperature required.In addition, curtain coating room 11 is provided with the register 30 for regulating this internal temperature.
The runner of dope is formed in the inside of feed head 21.Curtain coating mould 23 is provided with decompression chamber 32.This decompression chamber 32 reduces pressure to liquid stream (hereinafter referred to as " the drop ") rear shooing out the dope of mouth arrival casting drum 22 from curtain coating mould 23, makes drop become stable relative to the contact of casting drum 22.Big envelope (omitting diagram) is installed in decompression chamber 32, decompression chamber 32 is adjusted to required temperature.
Transfer portion 12 is provided with multiple roll 35.The moistening film 25 peeled off from casting drum 22 is delivered to pin stenter 13 by these rolls 35.Below, using the throughput direction of this moistening film 25 as A direction.Blower 36 is provided with above the transport path of moistening film 25.This blower 36 sprays dry wind to promote the drying of moistening film 25 to moistening film 25.
The edge that pin stenter 13 inserts the needle to moistening film 25 keeps, under the state keeping this edge, carry moistening film 25.In pin stenter 13, by the edge that stretches in the direction of the width, expand the width of moistening film 25 with certain rate of widening.In addition, for this moistening film 25, send dry wind by dry catheter 52,53 (with reference to Fig. 3), be heated to required temperature, promote dry.Dry wind after absorption is reclaimed by dry wind EGR 60 while solvent or plasticizer absorption being reclaimed from the dry wind sent by dry catheter 52,53 is back to dry catheter 52,53.
The downstream of pin stenter 13 is located at by clip stenter 14, while the edge holding the moistening film 25 sent by pin stenter 13 carries out carrying, carry out drying.In clip stenter 14, while the edge that also stretches in the direction of the width, by the ejection of dry wind, drying is carried out to moistening film 25.Thus, film 37 is obtained.In addition, because clip stenter is arranged as required, thus can omit.Now, drying device 16 is sent to from pin stenter 13 film 37 out.Edge from clip stenter 14 film 37 is out blocked by trimming device 15.In addition, trimming device 15 is connected with disintegrating machine 66, utilizes this disintegrating machine 66 edge of film 37 to be pulverized, make sheet bits.Then, the film 37 edge be truncated delivers to drying device 16.
Possess multiple roll 67 in the inside of drying device 16, it is dry on one side that film 37 carries out conveying by roll 67.In this drying device 16, adsorb from the solvent gas of the film 37 generation absorbing recovery device 69 be located at outside drying device 16 and reclaim.Utilize absorption to reclaim the gas eliminating solvent and be again back to drying device 16.Be sent to cooling device 17 from drying device 16 film 37 out, in this cooling device 17, be cooled to roughly room temperature.In addition, trimming device also can be arranged on the outlet of pin stenter 13, after edge being blocked, is delivered to clip stenter.
Devices for taking-up 18 possesses core 70, batches on core 70 from cooling device 17 film 37 out with roll.In addition, devices for taking-up 18 possesses pressure roller 71, and this pressure roller 71 regulates to batch to press and batched by film 37.
As shown in Figures 2 and 3, pin stenter 13, under the state of both side ends (edge) 25a supporting moistening film 25, above stretches at its width (hereinafter referred to as " B direction ") with the percentage elongation of regulation while being carried out carrying on A direction by this moistening film 25.Pin stenter 13 possess brush roll 40 that pin inserts, dust arrester 42, guide rail 44, sprocket wheel 46 ~ 48, dry catheter 52,53, guide cover (conduit) 54 and needle rack 58.
Brush roll 40 is arranged on the entrance 13a side of pin stenter 13, pin 72 is inserted into the edge 25a of the moistening film 25 entering pin stenter 13 to its root (with reference to Fig. 4).Dust arrester 42 is arranged on the outlet 13b side of pin stenter 13, removes the rubbish etc. on edge 25a by aspirating.
Guide rail 44 is arranged on the both sides of the transport path of moistening film 25.Guide rail 44 decides its width according to the percentage elongation of moistening film 25 or widens pattern (pattern), and diagram represents extended state turgidly.In addition, pattern of widening also is an example, can consider that the optical characteristics employing of film is various and widen pattern.Guide rail 44 is made up of 1 couple of guide rail 44a, the 44b being configured in above-below direction.
Sprocket wheel 46,47 is arranged on the entrance 13a side of pin stenter 13.Sprocket wheel 48 is arranged on the outlet 13b side of pin stenter 13.Sprocket wheel 48 is when utilizing the rotary actuation of engine etc. to rotate, and the needle rack 58 for the needle plate (all with reference to Fig. 4) transporting pin 72 and be embedded with multiple pin 72 is walked along guide rail 44.And sprocket wheel 46,47 rotates while the walking of this needle rack 58.
Dry catheter 52 is arranged on the top of the transport path of moistening film 25.Dry catheter 53 is arranged on the below of the transport path of moistening film 25.Dry wind is sprayed onto the upper surface of moistening film 25 by dry catheter 52.In addition, dry wind is sprayed onto the lower surface of moistening film 25 by dry catheter 53.The temperature of the dry wind of dry catheter 52,53 is more than 40 DEG C and be set as required temperature in the scope of less than 200 DEG C.Thus, while the drying of promotion moistening film 25, solvent gas evaporates from moistening film 25.
As shown in Figure 4, guide cover 54 covers a part for guide rail 44a, 44b and needle rack 58.At the upper surface of the inside of guide cover 54, guide rail 44a is installed, at its lower surface, guide rail 44b is installed.Needle rack 58 is configured between guide rail 44a and guide rail 44b.In addition, guide cover 54 is formed with gap 54a along the direction of travel of needle rack 58.This gap 54a is covered by the component 75 that keeps out the wind described later, makes to deliver to inertness gas in guide cover 54 or cooling air can not leak.In addition, as shown in Figure 5, in the guide cover 54 near the setting position of sprocket wheel 46, the gap 54b for making sprocket wheel 46 enter is formed.For the guide cover 54 near the setting position of sprocket wheel 47, be also same, thus omit the description.
As shown in Figure 4, needle rack 58 is made up of pin 72, needle plate 73, rack body 74, the component 75 that keeps out the wind, deflector roll 76 ~ 79.Utilize pin 72 and needle plate 73 to form and support component.Pin 72 is multiple to be at predetermined intervals embedded on needle plate 73.This needle plate 73 is fixed on and keeps out the wind on the windshied part 75a of component 75.In addition, the side of rack body 74 is formed with the jut 74a for supporting the component 75 that keeps out the wind.This jut 74a is fixed with the component 75 that keeps out the wind.In addition, the central portion of the lower surface of rack body 74 is formed with the occlusion ditch 74b be engaged mutually with the tooth of sprocket wheel 46,47,48.
The component 75 that keeps out the wind is fixed via the gap 54a of the guide cover 54 and jut 74a of rack body 74.In addition, this component 75 that keeps out the wind possesses the windshied part 75a that stretches on direction up and down to cover gap 54a, and the gap 54a of guide cover 54 hides by windshied part 75a.By this windshied part 75a, prevent the dry wind comprising the solvent gas evaporated from moistening film 25 from invading the inside of guide cover 54.In addition, windshied part 75a, when place carries out steaming to pin 72 and needle plate 73 to aftermentioned steaming region 82 (with reference to Fig. 7), prevents this steam from entering into guide cover 54 inner.
The width of deflector roll 76 and deflector roll 77 only spaced guide tracks 44a is arranged on the upper surface of rack body 74.Equally, the width of deflector roll 78 and deflector roll 79 only spaced guide tracks 44b is arranged on the lower surface of rack body 74.These deflector rolls 76 ~ 79 clamping guide rail 44a, 44b, when rack body 74 moves along guide rail 44a, 44b, guide support main body 74.
The leading section and rearward end of the direction of travel of each rack body 74 are provided with the connection bracket being interconnected each rack body 74.On this connection bracket, in the horizontal direction connecting needle is installed.Therefore, owing to connecting each rack body 74 via connecting needle, thus can walk in vertical plane as shown in Figure 3 mobile.In addition, also can replace being interconnected block rack body with connecting needle and forming needle rack, use chain to form needle rack.
As shown in Figure 3, along the direction of travel of the needle rack 58 supported of the moistening film 25 of release on pin stenter 13, be provided with gas clean-up region 81, steaming region 82, spray wind washing zone the 83, the 1st cooled region 84, the 2nd cooled region 86.Steaming region 82 and spraying in wind washing zone 83 is comprised from the composition contained by the solvent gas of moistening film 25 evaporation by the major part of the foreign matter of washing removing.As the composition contained by solvent gas, except the additive of the dope of the UV agent such as plasticizer or BTA system raw material such as TPP (triphenyl phosphate), BDP (biphenyl diphenyl ester), Polyester and so on is except the composition of liquefaction or solidification, punching dregs produced when particularly inserting a needle in film in addition or remain in the burr etc. of the surrounding of pin when being extracted from film by pin.In addition, in foreign matter, optical characteristics conditioning agent is comprised through the material liquefied or solidify.By removing this foreign matter, become the conveying that moistening film can not be hindered to needle rack 58.Meanwhile, can prevent the in-process in pin stenter 13 from polluting, foreign matter also can be prevented in addition to be mixed in moistening film 25.
As shown in Figure 6, the guide cover 54 being positioned at gas clean-up region 81 is provided with the nozzle 90 of air feed and the discharge pipe 91 of air-breathing.The blowout hole of nozzle 90 and the suction hole of discharge pipe 91 are respectively towards the inside of guide cover 54.In addition, gas clean-up region 81 is provided with nitrogen gas supply portion 94, aspirator 95, filter 96.Nitrogen gas supply portion 94 is connected on nozzle 90.Aspirator 95 is connected on discharge pipe 91.In addition, aspirator 95 is connected with nitrogen gas supply portion 94 via filter 96.
When carrying out gas clean-up, nitrogen is supplied to nozzle 90 from nitrogen gas supply portion 94.This nitrogen is conducted in guide cover 54 via the blowout hole of nozzle 90.By blowing out nitrogen by nozzle 90, the foreign matter removing will be attached on rack body 74, deflector roll 76 ~ 79 and guide rail 44a, 44b while the pressure increase of guide cover 54 inside.Aspirator 95 carries out air-breathing to gas via the suction hole of discharge pipe 91 in the guide cover 54 of pressurized state, aspirates the foreign matter being trapped in this guide cover 54 inside simultaneously.Filter 96 removes foreign matter from the gas being sucked device 95 suction.Then the nitrogen eliminating this foreign matter is delivered to nitrogen gas supply portion 94.
In this gas clean-up region 81, the region particularly releasing the maintenance of the edge 25a of moistening film 25 becomes extra high region in the concentration of pin stenter 13 internal solvent gas.Therefore, by the pressure utilizing the air feed of nitrogen to improve guide cover 54 inside in advance, can prevent solvent gas from entering into guide cover 54 inner.In addition, be attached to deflector roll 76 ~ 79 on through the material of liquefaction or solidification as foreign matter even if hypothesis solvent gas enters into this solvent gas in guide cover 54, utilize the ejection of nitrogen also above-mentioned foreign matter can be removed.Then, because the foreign matter after this removing is discharged to outside guide cover 54 by aspirator 95, it is inner that the material thus hindering needle rack 58 to walk can not be present in guide cover 54.Thus, needle rack 58 stably can be walked along guide rail 44.
In addition, gas clean-up is not only carried out in the conveyor zones of moistening film 25, carries out in the whole region also can walked at needle rack 58.In addition, discharge pipe 91 is arranged on the position corresponding with nozzle 90 and the opposition side of guide cover 54, but discharge pipe 91 also can be arranged away from nozzle 90 on the direction of travel of needle rack 58.Now, by making the position of drain position offset nozzle 90, can be higher than tentering unit room by the pressure setting in guide cover 54 efficiently.In addition, nozzle 90 and discharge pipe 91 can with on the multiple direction of travel being arranged on needle rack 58 of suitable spacing in gas clean-up region 81.
As shown in Figure 7, steaming region 82 is arranged the nozzle 120a ~ 120c for spraying steam.The blowout hole of nozzle 120a is towards the direction of pin 72 and needle plate 73.In addition, the blowout hole of nozzle 120b, 120c is towards the direction of guide rail 44a, 44b, rack body 74, deflector roll 76 ~ 79.In addition, steaming region 82 is provided with steam supply portion 122.This steam supply portion 122 is connected on nozzle 120a ~ 120c.
When carrying out steaming, steam is supplied to nozzle 120a ~ 120c by steam supply portion 122.This steam is ejected to pin 72 and needle plate 73 from the blowout hole of nozzle 120a.In addition, steam is ejected to guide rail 44a, 44b, rack body 74, deflector roll 76 ~ 79 from the blowout hole of nozzle 120b, 120c.Utilize the ejection of this steam, by the foreign matter removing be attached on pin 72, needle plate 73, guide rail 44a, 44b, rack body 74, deflector roll 76 ~ 79.In addition, utilize the ejection removing foreign matter of steam, but be not limited to this, the steam of the high liquid of the effect containing removing foreign matter can be used to wash.
As shown in Figure 8, in injection wind washing zone 83, spray from the nozzle be configured in chamber 202 203,204 pairs of pins 72 and needle plate 73 and spray wind.By the ejection of the injection wind in this chamber 202, the foreign matters such as punching dregs or burr are removed from pin 72 and needle plate 73.In addition, the foreign matter be trapped in chamber 202 is discharged to outside chamber 202 by exhaust nozzle 240 (with reference to Fig. 9).
Spray wind to be supplied via supply pipe arrangement 206 by the air blast 205 outside sleeve pipe 200.Supply pipe arrangement 206 is connected between air blast 205 with chamber 202.Midway in supply pipe arrangement 206 is provided with to discharge spraying the part of wind from supply pipe arrangement 206 and to be discarded to the discharge wind pipe arrangement 208 in sleeve pipe 200.The branch point of supply pipe arrangement 206 with discharge wind pipe arrangement 208 is provided with the triple valve 209 of the air quantity regulating the injection wind being disposed to discharge wind pipe arrangement 208.
The foreign matter produced in chamber 202 is sent to centrifugal separator 212 via suction pipe arrangement 210 together along with spraying wind.Centrifugal separator 212 is arranged on the position lower than chamber 202, and the suction pipe arrangement 210 connecting them is to make to tilt to the mode of centrifugal separator 212 step-down gradually from chamber 202.Flow through foreign matter in suction pipe arrangement 210 described above, be not only solids such as comprising punching dregs, also comprise the liquefied substance through liquefaction such as TPP.Therefore, by making suction pipe arrangement 210 for descending, the midway of suction pipe arrangement 210 can not be trapped in through the foreign matter liquefied or solidify, can positively deliver to centrifugal separator 212.
Centrifugal separator 212 is by the foreign matter sent into from suction pipe arrangement 210 and spray wind separation.Centrifugal separator 212 is cyclone mode, sends into from the suction foreign matter of pipe arrangement 210 and injection wind along the inner peripheral surface of cylindrical body 214.Foreign matter, due to heavier than injection wind, time thus in each rotational circle cylindrical body 214, is spirally gradually fallen by deadweight.Thus, foreign matter is separated with injection wind.The foreign matter fallen is sent to recoverer 216 via the hopper 215 being arranged on cylindrical body 214 bottom.On the other hand, the injection wind be separated with foreign matter is sent to air blast 205 via pipe arrangement 218.In addition, be recovered in the foreign matter reclaimed in portion 216, TPP is also recycling by filtering.
The temperature sensor 219 measuring internal temperature is provided with in chamber 202.Controller 220 controls the aperture of triple valve 209 according to the temperature in the chamber 202 measured by temperature sensor 219.By controlling its aperture to control the air quantity of the injection wind delivering to discharge wind pipe arrangement 208, thus can regulate by the temperature of nozzle 203, the 204 injection wind out in chamber 202.Therefore, by only a part of spraying wind being disposed in discharge wind pipe arrangement 208, the not only temperature of adjustable injection wind, the temperature also in adjustable chamber 202, thus there is no need to arrange other costs of the cost such as heater or radiator.Here, when utilizing controller 220 to control, preferably regulate the temperature of spraying wind to make it reach to be in the temperature more than TPP fusing point and be less than the heat resisting temperature of other equipment such as sleeve pipe 200, nozzle 203,204 or chamber 202.In addition, such as, the fusing point of TPP is 49 DEG C, and the heat resisting temperature of equipment is 120 DEG C.
As shown in Figure 9, chamber 202 possesses injection wind blowing unit 230, upstream side induction chamber 231 and downstream induction chamber 232.Spray wind blowing unit 230 pairs of pins 72 and needle plate 73 ejection injection wind.Upstream side induction chamber 231 is arranged on relative to the moving direction P of pin and needle plate the upstream side spraying wind blowing unit 230.Downstream induction chamber 232 is arranged on the downstream of spraying wind blowing unit 230.Spray wind blowing unit 230 possess conduit 235,236, multiple nozzle 203a ~ 203e, 204a ~ 204e.Conduit 235,236 transports the injection wind from air blast 205.Multiple nozzle 203a ~ 203e, 204a ~ 204e are arranged on the lower surface of conduit 235,236 and the upper surface of conduit, the injection vane 72 in conduit 235,236 and needle plate 73 are sprayed.
Multiple nozzle 203a ~ 203e, 204a ~ 204e are arranged at certain intervals along the moving direction P of pin 72 and needle plate 73.Nozzle 203a, 204a closest to upstream side induction chamber 231 are arranged in the mode making injection wind and almost blow out along the moving direction P of pin 72 and needle plate 73.On the contrary, nozzle 203b ~ 203e, 204b ~ 204e are in addition arranged in the mode making injection wind and blow out along the direction Q almost contrary with the moving direction P of pin 72 and needle plate 73.In addition, the wind speed of the injection wind sprayed by nozzle 203a ~ 203e, 204a ~ 204e is preferably more than 10 ms/min.
So, by injection wind is sprayed from nozzle 203b ~ 203e, 204b ~ 204e along the direction Q almost contrary relative to the moving direction P of pin 72 and needle plate 73, with spray along moving direction P spray wind time compared with, pin 72 and needle plate 73 with spray the impulsive force that wind occurs when colliding and increase.Thus, the foreign matter be attached on pin 72 and needle plate 73 can easily be removed.In addition, nonetheless injection wind is ejected into the Q direction from downstream towards upstream side, due to nozzle 203a, 204a ejection from upstream side be the most the injection wind in the P direction of counter blow relative to the injection wind in this Q direction, the impetus of the injection wind therefore on Q direction weakens.Thus, the foreign matter spraying wind maybe contained in this injection wind likely exceedes upstream side induction chamber 231 and goes to outside chamber 202.
Exhaust nozzle 240 is installed in upstream side induction chamber 231.By utilizing the gas in this exhaust nozzle 240 pairs of upstream side induction chambers 231 to be exhausted, make to be in negative pressure state in upstream side induction chamber 231.In addition, the exhaust nozzle 242 identical with upstream side induction chamber 231 is also installed in downstream induction chamber 232, by this exhaust nozzle 242, in downstream induction chamber 232, is in negative pressure state.Like this, because upstream side induction chamber 231 and downstream induction chamber 232 are in negative pressure state, the foreign matter of injection wind blowing unit 230 from pin 72 and needle plate 73 after removing is therefore utilized to be sucked into upstream side induction chamber 231 or downstream induction chamber 232.The foreign matter being sucked into upstream side induction chamber 231 or downstream induction chamber 232 is sent in suction pipe arrangement 210 via exhaust nozzle 240,242.
As shown in Figure 10, in the 1st cooled region 84, pin 72 and needle plate 73 are covered by pin lid 130.The side of this pin lid 130 is formed supply hole 130a.The guide cover 54 being positioned at the 1st cooled region 84 is provided with the nozzle 132 of air feed.The blowout hole of this nozzle 132 is towards the inside of guide cover 54.In addition, the 1st cooled region 84 is provided with cooling air supply unit 134, this cooling air supply unit 134 is connected to supply hole 130a.
In 1st cooled region 84, reach roughly uniform mode with the temperature of the whole inside of the inside and pin lid 130 that make the guide cover 54 of the 1st cooled region 84, supply cooling air from cooling air supply unit 134.The temperature of this cooling air is such as set to more than-30 DEG C and less than+30 DEG C temperature required.Thus, the temperature of the inside of guide cover 54 and the whole inside of pin lid 130 be TPP fusing point below, namely less than 50 DEG C.Therefore, when from moistening film 25 with vaporized TPP of solvent etc. along with the moving in the 1st cooled region 84 of needle rack 58 or needle plate 73 time, this TPP etc. precipitate in pin 72 or needle rack 58 etc.
In addition, cooling air is utilized only to cool pin 72 and needle plate 73 in the 2nd cooled region 86.The formation of the 2nd cooled region 86 is not due to except arranging pin lid, same with the 1st cooled region 84, thus omits the description.In 2nd cooled region 86, cool after being connected on the 1st cooled region 84, thus the surface temperature of pin 72 and needle plate 73 reaches more than 35 DEG C and less than 50 DEG C.By making the temperature of pin 72 be the temperature of above-mentioned scope, pin 72 becomes and facilitates penetration of edge 25a.
In present embodiment, from moistening film being retained to and carrying out discharging of edge during, carry when not overturning moistening film.But being not limited to this, can also be repeatedly overturn moistening film while carry out the multistage mode of movement carried.
In present embodiment, in present embodiment, the present invention is applicable to pin stenter, but is not limited to this, also the present invention can be applicable to clip stenter.In addition, pin stenter of the present invention is directed in solution film-forming equipment, but is non-essentially limited to this, also can enforcement the present invention in the web production facility manufacturing the tablet (web) beyond film.
The width of the film 37 manufactured in present embodiment is preferably more than 1400mm and below 2500mm.In addition, even if when the width of film 37 is more than 2500mm, also effect of the present invention can be obtained.In addition, the thickness of the film 37 manufactured by above-mentioned embodiment is preferably more than 20 μm and less than 100 μm, is more preferably more than 20 μm and less than 80 μm, most preferably is more than 30 μm and less than 70 μm.
In above-mentioned embodiment, situation use a kind of dope being manufactured to the film of individual layer is illustrated, but the present invention also can play effect when forming the casting films of multi-ply construction.Now, can use simultaneously or the method for the dope of curtain coating aequum successively, be not particularly limited.In addition, from the structure of curtain coating mould, pressure-reducing chamber, supporter etc., the drying condition of curtain coating, stripping method, stretching, each operation altogether, processing method, curling, flatness correct after method for coiling be recorded in [0617] paragraph of Japanese Unexamined Patent Publication 2005-104148 publication in detail to [0889] paragraph to method for recovering solvents, film recovery method, these inventions involved by record are also applicable to the present invention.In addition, the performance of the film completed, amount of crimp, thickness and their determination method are recorded in [1073] paragraph of Japanese Unexamined Patent Publication 2005-104148 publication to [1087] paragraph, these record involved by invention be also applicable to the present invention.
When implementing surface treatment at least one face of completed film, due to the bond degree with the optical component such as Polarizer can be improved, thus preferably.As surface treatment, such as, can enumerate vacuum glow discharge process, atmospheric plasma discharge process, Ultraviolet radiation process, Corona discharge Treatment, flame treatment, acid treatment, alkali treatment etc., preferably carry out at least a kind of process in these.
With completed film for substrate on two face or a face, required functional layer is set time, can be used as various functional membrane use.As functional layer, such as, can enumerate antistatic backing, curing resin layer, anti-reflection layer, easily adhesive linkage, antiglare layer, optical compensating layer etc.Such as, when arranging anti-reflection layer, acquisition can prevent the reflection of light and provide the antireflection film of high image quality.About above-mentioned functions layer or formation method etc., be recorded in [0890] paragraph of Japanese Unexamined Patent Publication 2005-104148 publication in detail to [1072] paragraph, these record involved by invention be also applicable to the present invention.In addition, about the concrete purposes of polymer film, such as, can enumerate the utilization etc. in the liquid crystal display device such as TN type, STN type, VA type, OCB type, reflection-type of [1088] paragraph to [1265] paragraph of being recorded in Japanese Unexamined Patent Publication 2005-104148 publication.
Then, the raw material of the dope manufactured by dope manufacturing equipment 20 is below shown.
When using the raw material of cellulose esters as dope, due to the high film of transparency can be obtained, thus preferably.As cellulose esters, such as, can enumerate the cellulosic low-grade fatty acid esters such as Triafol T, cellulose acetate propionate, butyric acid acylated cellulose (celluloseacylatebutyrate).Wherein, because transparency is high, preferably use acylated cellulose, more preferably use triacetyl cellulose (TAC).In addition, the dope used in above-mentioned embodiment comprises triacetyl cellulose (TAC) as polymer.During use TAC like this, more than the 90 quality % of preferred TAC are the particle of 0.1 ~ 4mm.
As above-mentioned acylated cellulose, in order to obtain the higher film of transparency, it is whole that the substitution value of preferred acyl group to cellulosic hydroxyl meets in following formula (a) ~ (c).A, B in following formula represent the substitution value of acyl group relative to the hydrogen atom in cellulosic hydroxyl, and specifically, A is the substitution value of acetyl group, the substitution value of B to be carbon number the be acyl group of 3 ~ 22.
(a)2.5≤A+B≤3.0
(b)0≤A≤3.0
(c)0≤B≤2.9
The glucose unit forming cellulosic β-Isosorbide-5-Nitrae key has free hydroxyl 2,3 and 6.Acylated cellulose utilizes carbon number to be that the acyl group of more than 2 is by the polymer (polymer) of part or all esterification of these hydroxyls.Acyl substitution, for 2,3 and 6, represents the ratio of cellulosic hydroxyl generation esterification respectively.Wherein, the situation of 100% esterification is alternatively spent 1.
The value of total acidylate substitution value, i.e. DS2+DS3+DS6 is preferably 2.00 ~ 3.00, is more preferably 2.22 ~ 2.90, is particularly preferably 2.40 ~ 2.88.In addition, the value of DS6/ (DS2+DS3+DS6) is preferably more than 0.28, is more preferably more than 0.30, is particularly preferably 0.31 ~ 0.34.Here, DS2 be the hydrogen of 2 hydroxyls in glucose unit by the ratio of acyl substituted, DS3 be the hydrogen of 3 hydroxyls in glucose unit by the ratio of acyl substituted, DS6 is that the hydrogen of 6 hydroxyls in glucose unit is by the ratio of acyl substituted.
The acyl group used in acylated cellulose can be only a kind, also can use acyl group of more than two kinds.In addition, when using acyl group of more than two kinds, preferably wherein 1 be acetyl group.When making the hydroxyl of 2,3 and 6 be DSA by the degree sum that acetyl group replaces and make the hydroxyl of 2,3 and 6 be DSB by the degree sum of the acyl substituted beyond acetyl group; the value of DSA+DSB is preferably 2.22 ~ 2.90, is particularly preferably 2.40 ~ 2.88.
In addition, DSB is preferably more than 0.30, is particularly preferably more than 0.7.And DSB more than 20% is wherein preferably the substituting group of 6 hydroxyls, is more preferably more than 25%, more preferably more than 30%, be particularly preferably more than 33%.And then the value of the DSA+DSB on 6 of also preferred acylated cellulose is more than 0.75, more preferably more than 0.80, be particularly preferably the acylated cellulose of more than 0.85.When using this acylated cellulose, the dope that dissolubility is very excellent can be modulated.In addition, when using above-mentioned acylated cellulose, can modulate when using chlorine-free solvent and there is very excellent dissolubility, low viscosity and the dope of filterability excellence.
Cellulose as the raw material of acylated cellulose can be the cellulose obtained by any one in velveteen, cotton pulp.
Carbon number as acylated cellulose is the acyl group of more than 2, can be aliphatic group, can be also aryl, be not particularly limited.Such as, cellulosic alkyl-carbonyl ester, alkenyl carbonyl ester, aromatic carbonyl ester, aromatic alkyl carbonyl ester etc. can be enumerated.And then, also can have the group be substituted respectively.As their preferred example, propiono, bytyry, valeryl, caproyl, caprylyl, capryl, dodecane acyl group, tridecane acyl group, tetradecane acyl group, hexadecane acyl group, octadecanoyl, isobutyryl, tertiary bytyry, cyclohexane carbo, oleoyl, benzoyl, naphthyl carbonyl, cinnamoyl etc. can be enumerated.Wherein, more preferably propiono, bytyry, dodecane acyl group, octadecanoyl, tertiary bytyry, oleoyl, benzoyl, naphthyl carbonyl, cinnamoyl etc., particularly preferably propiono, bytyry.
In addition, in the present invention, the details of spendable acylated cellulose is recorded in [0140] paragraph of Japanese Unexamined Patent Publication 2005-104148 publication in [0195] paragraph, and these records are also applicable to the present invention.
The solvent becoming dope raw material preferably uses the organic compound that can dissolve polymer used.In the present invention, dope is owing to referring to by by dissolution of polymer or be scattered in the mixture obtained in solvent, thus also can use the solvent low with structure adaptability.As the solvent that can preferably use, such as, can enumerate the aromatic hydrocarbon such as benzene or toluene; Carrene or the halogenated hydrocarbons such as chloroform, chlorobenzene; The alcohol such as methyl alcohol, ethanol, normal propyl alcohol, n-butanol, diethylene glycol; The ketone such as acetone or MEK; Methyl acetate or the ester such as ethyl acetate, propyl acetate; The ether such as oxolane or methyl cellosolve etc.The mixed solvent selecting solvent of more than two kinds to carry out to mix from these solvents can be used.Wherein, when using carrene, the dope of solubility excellence can be obtained, the solvent in casting films can be made at short notice to evaporate simultaneously, make film, therefore preferably.
As above-mentioned halogenated hydrocarbons, preferably carbon number is used to be the halogenated hydrocarbons of 1 ~ 7.And, from with the intermiscibility of polymer, as the fissility of the index of the easy degree of stripping of the casting films peeled off from supporter, the viewpoint such as mechanical strength, optical characteristics of film, be preferably used in carrene and be mixed with the material that one or more carbon numbers are the alcohol of 1 ~ 5.The content of alcohol is all relative to solvent is preferably 2 ~ 25 % by weight, is more preferably 5 ~ 20 % by weight.As the object lesson of alcohol, methyl alcohol, ethanol, normal propyl alcohol, isopropyl alcohol, n-butanol etc. can be enumerated, wherein preferably use methyl alcohol, ethanol, n-butanol or their mixture.
Recently, in order to minimally suppress the impact on environment, also proposed the solvent composition not using carrene.For this object, the ketone that the ether that preferred carbon number is 4 ~ 12, carbon number are 3 ~ 12, carbon number are the ester of 3 ~ 12, and preferably use behind they suitably mixing.These compounds can have ring-shaped structure, and the compound with any one in the functional group of more than 2 ethers, ketone and esters, i.e.-O-,-CO-and-COO-also can be used as solvent and uses.In addition, solvent can have other the functional group such as alcohol hydroxyl group.Wherein, when there is two or more functional group, as long as its carbon number has in the prescribed limit of the compound of any one functional group, be not particularly limited.
Also the known various additive such as plasticizer, ultra-violet absorber (UV agent), anti-deterioration agent, lubricant, stripping promoter can be added according to object in dope.Such as, the known various plasticizer such as phosphate plasticizer, the diethyl phthalate etc. such as triphenyl phosphate, biphenyl diphenyl ester phthalic acid ester system's plasticizer and flexible polyester polyurethane body can be used as plasticizer.
In addition, to prevent film to be bonded to each other or to regulate for the purpose of refractive index in dope, preferably particulate is added.As this particulate, preferably use silica derivative.Silica derivative of the present invention also comprises silica, has the organic siliconresin of three-dimensional netted structure.Such silica derivative preferably uses its surface to carry out the silica derivative of alkylation process.Due to the excellent dispersion relative to solvent, thus can there is not the situation modulated dope condensed in the particulate implementing the hydrophobization process such as alkylation process, and then manufactures film between particles, thus can manufacture the film that planar defect is few, transparency is high.
As mentioned above, as the particulate having carried out alkylation process from the teeth outwards, the AerosilR805 (Japanese Aerosil (strain) system) etc. that the silica derivative that surface such as can be used as to be imported with octyl group is sold.Wherein, in order to obtain the film that transparency is high while the effect of guaranteeing to add particulate, preferably less than 0.2% is reached relative to the content of the particulate of the solid constituent of dope.And particulate is not in order to hinder passing through of light, and its average grain diameter is preferably less than 1.0 μm, is more preferably 0.3 ~ 1.0 μm, is particularly preferably 0.4 ~ 0.8 μm.
As mentioned above, in order to obtain the high polymer film of transparency in the present invention, TAC is also preferably utilized to modulate dope as polymer.Now, relative to the full dose of the dope after mixed solvent or additive etc., the ratio containing TAC is 5 ~ 40 % by weight.More preferably the ratio containing TAC is 15 ~ 30 % by weight, is particularly preferably 17 ~ 25 % by weight.In addition, the ratio comprising additive (mainly plasticizer) is preferably 1 ~ 20 % by weight relative to the solid constituent entirety comprising contained polymer or other additives etc. in dope.
Wherein, for the various additive such as solvent, plasticizer, ultra-violet absorber, anti-deterioration agent, lubricant, stripping promoter, optical anisotropy controlling agent, delay inhibitor, dyestuff, remover and particulate, be recorded in [0196] paragraph of Japanese Unexamined Patent Publication 2005-104148 publication in detail to [0516] paragraph, these records are also applicable to the present invention.In addition, for as the manufacture method of dope that make use of TAC, dissolving method and adding method, filter method, the deaeration etc. of such as raw material, raw material, additive are recorded in [0517] paragraph of Japanese Unexamined Patent Publication 2005-104148 publication similarly in detail to [0616] paragraph, and these records are also applicable to the present invention.
Claims (10)
1. a tenter frame apparatus, it possesses with lower member:
What support the both side ends of the film in conveying supports component;
Component is supported in the loopy moving portion supporting loopy moving between interval and release interval described in making, wherein, described support interval be described in support the interval that component supports described film, described release interval be described in support the interval supported that component discharges described film;
Made the stretching/drying section of its drying by ejection dry wind while supporting in interval described in stretching with certain rate of widening film, it gradually moves carry out described stretching by supporting component described in making in advance on the direction that described film is widened;
Cover the chamber supporting component described in described release interval;
By spraying wind will support the injection wind blowing unit of the foreign matter removing on component described in being attached to by supporting component ejection described in described chamber;
Described foreign matter is expelled to the foreign matter discharge portion outside described chamber;
By the injection wind supported described in being sprayed onto in described chamber on component being reclaimed and reclaimed injection wind being back in described chamber the injection wind circulation portions making injection wind circulate;
Discharge the injection wind discharge portion of a part for the injection wind reclaimed; And
By supporting the control part of the temperature of the injection wind on component described in regulating the air quantity of the injection wind discharged by described injection wind discharge portion to control to be sprayed onto.
2. tenter frame apparatus according to claim 1, wherein, described foreign matter discharge portion aspirates described foreign matter in upstream side suction chamber and downstream suction chamber, described upstream side suction chamber is arranged at the upstream side of described injection wind blowing unit relative to the described moving direction supporting component, described downstream suction chamber is arranged at the downstream of described injection wind blowing unit, is discharged to outside described chamber by aspirated foreign matter via the discharge nozzle being arranged on described upstream side suction chamber and downstream suction chamber with described injection wind.
3. tenter frame apparatus according to claim 2, wherein, described upstream side suction chamber and downstream suction chamber are in negative pressure state.
4. a solution film-forming equipment, it possesses supporter and tenter frame apparatus, described supporter curtain coating has dope, form casting films, described dope comprises polymer, solvent and additive, described tenter frame apparatus carries out drying using while the moistening film of the described casting films peeled off from described supporter carries out stretching in the direction of the width by the ejection of dry wind, and make film, described tenter frame apparatus comprises with lower member:
What support the both side ends of the film in conveying supports component;
Component is supported in the loopy moving portion supporting loopy moving between interval and release interval described in making, wherein, described support interval be described in support the interval that component supports described film, described release interval be described in support the interval supported that component discharges described film;
Cover the chamber supporting component described in described release interval;
By supporting component ejection injection wind from the described injection wind blowing unit supporting component removing foreign matter to described in described chamber;
Described foreign matter is discharged to the foreign matter discharge portion outside described chamber with described injection wind;
By the injection wind supported described in being sprayed onto in described chamber on component being reclaimed and reclaimed injection wind being back in described chamber the injection wind circulation portions making injection wind circulate;
Discharge the injection wind discharge portion of a part for the injection wind reclaimed; And
By supporting the control part of the temperature of the injection wind on component described in regulating the air quantity of the injection wind discharged by described injection wind discharge portion to control to be sprayed onto, the temperature of described injection wind is controlled the temperature for exceeding described additive fusing point and is less than the scope of the heat resisting temperature of various equipment in described tenter frame apparatus by described control part.
5. solution film-forming equipment according to claim 4, wherein, described foreign matter comprises described additive through the material liquefied or solidify.
6. solution film-forming equipment according to claim 4, wherein, described foreign matter be included in the dregs and burr produced when starting or support the supporting of component described in release at least any one.
7. solution film-forming equipment according to claim 4, wherein, described tenter frame apparatus comprises with lower member:
To the separation unit that described foreign matter is separated with described injection wind; And
Arrange, delivered to by the foreign matter from described foreign matter discharge portion the pipe arrangement that has a down dip of described separation unit to make the mode gradually reduced to described separation unit from described foreign matter discharge portion.
8. solution film-forming equipment according to claim 4, wherein, the temperature of described injection wind controls to be more than 49 DEG C and various equipment heat resisting temperatures that is less than 120 DEG C in described tenter frame apparatus.
9. solution film-forming equipment according to claim 4, wherein, described tenter frame apparatus is have pin and be embedded with the needle plate of this pin multiple as the described pin stenter supporting component.
10. the foreign matter removing method in tenter frame apparatus, it possesses following steps:
Make to support component and supporting loopy moving between interval and release interval, wherein, described support interval be utilize described in support the interval that component supports the both side ends of film in conveying, described release interval supports the interval supported that component carries out described film described in release utilization;
Spray dry wind simultaneously make it dry by stretching to the described film supported in interval with certain rate of widening, wherein, described stretching is undertaken by supporting component described in making and gradually moving on the direction that described film is widened;
By spraying to by the component ejection that supports in described chamber the foreign matter removing that wind will support described in being attached on component in the chamber supporting component described in covering in described release interval;
Described foreign matter is discharged to outside described chamber;
By the injection wind supported described in being sprayed onto in described chamber on component is reclaimed and is back in described chamber by reclaimed injection wind, injection wind is circulated;
Discharge a part for the injection wind reclaimed; And
By supporting the temperature of the injection wind on component described in regulating the air quantity of injection wind of discharge to control to be sprayed onto.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010052842A JP5479165B2 (en) | 2010-03-10 | 2010-03-10 | Tenter device, method of removing foreign matter in tenter device, and solution casting apparatus |
| JP2010-052842 | 2010-03-10 | ||
| PCT/JP2011/054891 WO2011111598A1 (en) | 2010-03-10 | 2011-03-03 | Tenter apparatus, method for removing foreign substances in tenter apparatus, and equipment for producing film from solution |
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| CN102791466A CN102791466A (en) | 2012-11-21 |
| CN102791466B true CN102791466B (en) | 2015-11-25 |
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| JP (1) | JP5479165B2 (en) |
| KR (1) | KR101587316B1 (en) |
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| WO (1) | WO2011111598A1 (en) |
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| JP6280389B2 (en) * | 2014-02-21 | 2018-02-14 | 東レ・デュポン株式会社 | Method for producing polyimide film |
| JP6558092B2 (en) * | 2015-06-16 | 2019-08-14 | コニカミノルタ株式会社 | Manufacturing method of resin film |
| KR101974939B1 (en) * | 2018-10-31 | 2019-05-07 | 주식회사 아이에스더블유 | Tenter machine with autofilter |
| KR102349258B1 (en) * | 2021-06-10 | 2022-01-10 | 일성기계공업 주식회사 | Chamber cleaning apparatus for tenter machine |
| CN114801014A (en) * | 2022-04-28 | 2022-07-29 | 宁波秦鼎材料科技有限公司 | Vacuum width-fixing stenter for vertical polyolefin foaming furnace |
| TW202400399A (en) * | 2022-06-23 | 2024-01-01 | 日商東洋紡股份有限公司 | Method for producing film |
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| CN101396864A (en) * | 2007-09-26 | 2009-04-01 | 富士胶片株式会社 | Pin tenter and solution casting method |
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| JPS6371154U (en) * | 1986-10-27 | 1988-05-13 | ||
| JP3386564B2 (en) * | 1994-03-14 | 2003-03-17 | 東レ株式会社 | Apparatus and method for preventing winding of stenter tear film |
| JPH1177719A (en) * | 1997-09-12 | 1999-03-23 | Konica Corp | Apparatus and method for producing cellulose triacetate film |
| JPH11156937A (en) * | 1997-11-26 | 1999-06-15 | Unitika Ltd | Removing device of link stain in simultaneously, bixilally stretching machine |
| JP4733303B2 (en) * | 2001-07-17 | 2011-07-27 | 株式会社日本製鋼所 | Tenta oven device |
| JP5001197B2 (en) * | 2007-03-29 | 2012-08-15 | 富士フイルム株式会社 | Film drying method and apparatus, and solution casting method |
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| CN101396864A (en) * | 2007-09-26 | 2009-04-01 | 富士胶片株式会社 | Pin tenter and solution casting method |
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| KR20130006611A (en) | 2013-01-17 |
| JP2011183724A (en) | 2011-09-22 |
| WO2011111598A1 (en) | 2011-09-15 |
| CN102791466A (en) | 2012-11-21 |
| JP5479165B2 (en) | 2014-04-23 |
| KR101587316B1 (en) | 2016-02-02 |
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