WO2012176644A1 - ロール表面の再生方法 - Google Patents

ロール表面の再生方法 Download PDF

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Publication number
WO2012176644A1
WO2012176644A1 PCT/JP2012/064907 JP2012064907W WO2012176644A1 WO 2012176644 A1 WO2012176644 A1 WO 2012176644A1 JP 2012064907 W JP2012064907 W JP 2012064907W WO 2012176644 A1 WO2012176644 A1 WO 2012176644A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
dry ice
rubber
granular dry
polarizing film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/064907
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
富隆 中島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to KR1020147001313A priority Critical patent/KR102145954B1/ko
Publication of WO2012176644A1 publication Critical patent/WO2012176644A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00634—Production of filters
    • B29D11/00644—Production of filters polarizing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation

Definitions

  • the present invention relates to a method for regenerating the surface of a roll used in a polarizing film manufacturing apparatus.
  • Polarizing films are widely used in which a dichroic dye is adsorbed and oriented on a polyvinyl alcohol-based resin film.
  • a dichroic dye is adsorbed and oriented on a polyvinyl alcohol-based resin film.
  • a dye-type polarizing film used as a pigment is known.
  • These polarizing films are usually made into polarizing plates by bonding a protective film such as triacetyl cellulose to at least one surface, preferably both surfaces, via an adhesive.
  • a polyvinyl alcohol film is immersed in water to swell, then dyed with the dichroic dye described above, stretched, then treated with boric acid, washed with water, and then dried. It has been known.
  • a manufacturing apparatus for manufacturing the polarizing film is usually installed in a clean room for preventing foreign matter from adhering.
  • This polarizing film manufacturing apparatus is composed of a plurality of processing baths and a drying furnace, and uses many rolls such as a guide roll and a nip roll for transporting the film.
  • nip rolls are arranged before and after the treatment bath, a peripheral speed difference is given to the nip rolls to stretch the film in the treatment bath, or a constant tension is applied to the film between the front and rear nip rolls.
  • the polarizing film and the protective film are sandwiched between nip rolls, and the film is bonded.
  • expander rolls, spiral rolls, crown rolls, bend bars, and the like are also used for wrinkle stretching of films.
  • Rubber rolls used for guide rolls, nip rolls, etc. when used for a long time, the surface condition changes due to deterioration, deterioration, dirt, etc. on the rubber surface, and the film is easily scratched and wrinkled, and the film is also broken. It tends to occur. Therefore, a surface polishing process is performed in order to remove a deteriorated part and a dirty part on the surface of the rubber roll.
  • Examples of the polishing treatment include a method of cutting the roll surface while rotating the polishing wheel, a method of cutting by applying a cutting tool while rotating the roll, and the like.
  • a roll Had to be removed from the polarizing film manufacturing apparatus and carried out of the clean room in order to avoid polishing scraps generated by the polishing process from adhering to the polarizing film manufacturing apparatus and affecting the quality of the polarizing film to be manufactured, a roll Had to be removed from the polarizing film manufacturing apparatus and carried out of the clean room.
  • the roll carried out of the clean room is set, for example, in front of a polishing wheel that rotates at high speed, and is subjected to polishing treatment.
  • the present invention has been made to solve the above-described problems, and the object of the present invention is to remove the roll having the surface deteriorated or deteriorated or the surface is contaminated from the polarizing film manufacturing apparatus.
  • the present invention provides a method for easily regenerating the roll surface on the spot.
  • the present inventors have found a method in which the roll can be easily regenerated even in a clean room without spraying the roll from the equipment by spraying granular dry ice on the roll surface.
  • the present invention has been completed.
  • the present invention has the following configuration.
  • [1] A method for regenerating a roll surface in which granular dry ice is sprayed onto the roll surface used in a polarizing film manufacturing apparatus.
  • the roll surface can be easily polished without removing the roll from the polarizing film manufacturing apparatus and without contaminating the equipment even in a clean room, the time required for roll replacement and maintenance is greatly reduced. .
  • rolls to be regenerated in the present invention include metal rolls made of metal such as stainless steel, carbon fiber rolls, and rubber rolls whose outermost surfaces are covered with rubber.
  • the rubber roll is a roll in which the outermost surface of a metal roll or the like is covered with rubber as described above, but the outermost surface of the roll in contact with the film may be made of rubber.
  • the type of rubber is not particularly limited, and examples thereof include natural rubber, styrene butadiene rubber (SBR), nitrile rubber (NBR), chloroprene rubber, butyl rubber, ethylene propylene rubber (EP, EPDM), chlorosulfonated polyethylene rubber, Silicone rubber, hyperon rubber, fluoro rubber, urethane rubber and the like can be mentioned.
  • the hardness of the rubber on the outermost surface of the rubber roll is not particularly limited and varies depending on the type of rubber.
  • natural rubber hardness: 10 to 100
  • styrene butadiene rubber hardness: 30 to 100
  • Nitrile rubber hardness: 15 to 100
  • chloroprene rubber hardness: 10 to 90
  • butyl rubber hardness: 25 to 85
  • ethylene propylene rubber hardness: 25 to 85
  • chlorosulfonated polyethylene rubber hardness: 50 To 95
  • silicone rubber hardness: 20 to 90
  • fluororubber hardness: 55 to 80
  • urethane rubber hardness: 10 to 99.
  • the rubber roll may be any roll such as a flat guide roll, a nip roll, a crown roll, an expander roll, a spiral roll, and a sponge roll as long as the outermost surface is covered with rubber.
  • a rubber roll is arrange
  • a roll whose outermost surface is made of metal is also an object of suitable reproduction.
  • the roll having the outermost surface formed of metal include the above-described stainless steel metal roll, and more specifically, a metal roll formed of SUS304 and SUS316 is preferable.
  • metal plating such as aluminum plating and chromium plating, may be sufficient as the surface of such a metal roll and the carbon fiber roll mentioned above.
  • Such a roll formed of metal on the outermost surface has a surface roughness of 0.1 to 2.0 S expressed by an average interval S of local peaks of the roughness curve of JIS B 0601 (surface roughness). Preferably there is.
  • gravure rolls and the like on which the roll surface is engraved in order to apply the resin liquid to the film surface are also subject to regeneration of the present invention.
  • the present invention is a method for regenerating a roll surface in which granular dry ice is sprayed on the surface of a roll used in a polarizing film manufacturing apparatus.
  • the shape of the granular dry ice used in the present invention is appropriately selected from a spherical shape, a columnar shape, a cubic shape, a rectangular parallelepiped shape, an amorphous shape, and the like.
  • the “granular dry ice” in the present invention includes powdered dry ice also called dry ice snow or dry ice powder.
  • the particle size of the granular dry ice is not particularly limited, but when the shape is spherical or indefinite, the diameter (length of the longest part) is preferably within the range of 10 ⁇ m to 10 mm, and 100 ⁇ m to 5 mm. It is more preferable to be within the range. When the particle diameter is less than 10 ⁇ m, it is easily vaporized and it is difficult to maintain the shape as particles, and the collision force is also reduced. When the particle diameter is larger than 10 mm, it may be difficult to uniformly treat the surface of the roll. When the shape of the granular dry ice is cylindrical, the bottom diameter is preferably in the range of 100 ⁇ m to 5 mm and the height is preferably in the range of 300 ⁇ m to 10 mm. Further, when the shape of the granular dry ice is a cube or a rectangular parallelepiped, one side is preferably within a range of 100 ⁇ m to 5 mm.
  • the apparatus for spraying granular dry ice is not particularly limited.
  • apparatuses described in Japanese Patent Application Laid-Open No. 2009-178805 (Patent Document 1), Japanese Patent Application Laid-Open No. 2002-66483 (Patent Document 2), and the like are preferably used. it can.
  • a nozzle for spraying granular dry ice on a target a dry ice supply means for supplying granular dry ice to the nozzle, and a compressed gas for supplying compressed gas for spraying granular dry ice to the target to the nozzle
  • a dry ice spraying device provided with a supply means is preferably used.
  • the dry ice supply means includes, for example, a hopper for storing and supplying a certain amount of granular dry ice, and the hopper and the nozzle are connected via a screw feeder to supply the granular dry ice of the hopper to the nozzle.
  • the structure is preferably employed.
  • the pressure when spraying granular dry ice is preferably 0.01 to 50 MPa.
  • the pressure is less than 0.01 MPa, the surface peeling effect due to the impact of the granular dry ice is not sufficient, and when the pressure is more than 50 MPa, the roll surface is damaged, which is not preferable.
  • FIG. 1 is a diagram schematically showing a preferred example of the roll regeneration method of the present invention.
  • the suction nozzle 4 is disposed in the vicinity.
  • FIG. 2 is a diagram schematically showing another preferred example of the roll regeneration method of the present invention.
  • the suction nozzle 4 ′ is provided so as to cover the nozzle 2 ′ for spraying the granular dry ice 3. Even in such a case, the same effect as the example shown in FIG. 1 is produced.
  • Example 1 A rubber nip roll (manufactured by EPDM) that was installed in a polarizing film manufacturing apparatus and used for two months had a particle size of 1 mm on average using a dry ice spraying device (ED, MINIMO, manufactured by Toyo Union Co., Ltd.) The surface of the rubber roll was polished by spraying granular dry ice at a pressure of 1.0 MPa. The outermost surface of the rubber roll was removed and a new surface was exposed.
  • ED dry ice spraying device
  • Example 2 SUS304 metal roll with chrome plating that was installed in the polarizing film manufacturing equipment and used for 3 months, with an average particle size of 1 mm using a dry ice spray device (EDMINIMO, Toyo Union Co., Ltd.) The surface of the metal roll was polished by spraying granular dry ice with a pressure of 1.0 MPa.
  • EDMINIMO dry ice spray device
  • Example 3 Using a dry ice spraying device (ED MINIMO, Toyo Union Co., Ltd.) while rotating a rubber nip roll (EPDM) installed at a polarizing film manufacturing device at 25 m / min for 2 months.
  • the surface of the rubber roll was polished by spraying cylindrical dry ice having an average bottom diameter of 3 mm and height of 5 mm at a pressure of 0.4 MPa.
  • the distance between the ejection port and the rubber roll was maintained at a distance of 60 mm, and the ejection port was sprayed while moving parallel to the roll at a speed of 50 mm / min.
  • the outermost surface of the rubber roll was removed and a new surface was exposed.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Polarising Elements (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Cleaning In General (AREA)
PCT/JP2012/064907 2011-06-22 2012-06-11 ロール表面の再生方法 Ceased WO2012176644A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020147001313A KR102145954B1 (ko) 2011-06-22 2012-06-11 롤 표면의 재생 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011138260 2011-06-22
JP2011-138260 2011-06-22

Publications (1)

Publication Number Publication Date
WO2012176644A1 true WO2012176644A1 (ja) 2012-12-27

Family

ID=47422484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/064907 Ceased WO2012176644A1 (ja) 2011-06-22 2012-06-11 ロール表面の再生方法

Country Status (4)

Country Link
JP (1) JP5400193B2 (enExample)
KR (1) KR102145954B1 (enExample)
TW (1) TWI608901B (enExample)
WO (1) WO2012176644A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101779488B1 (ko) 2015-06-30 2017-09-19 주식회사 아이엠티 마이크로 이산화탄소 스노우 세정장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11216507A (ja) * 1998-01-27 1999-08-10 Nisshin Steel Co Ltd 稼働中のロール表面の異物除去装置およびロール表面の異物除去方法
JP2009258193A (ja) * 2008-04-14 2009-11-05 Japan Steel Works Ltd:The 偏光フィルムの製造方法および製造装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06246792A (ja) * 1993-02-24 1994-09-06 Asahi Glass Co Ltd 樹脂成形用金型
JPH07186048A (ja) * 1993-12-28 1995-07-25 Toray Ind Inc 糸条移送ロールの洗浄方法及びその装置
JPH09153682A (ja) * 1995-11-29 1997-06-10 Mitsubishi Rayon Co Ltd 多層プリント基板の製造方法
JP3437361B2 (ja) * 1996-01-24 2003-08-18 独立行政法人産業技術総合研究所 樹脂成形用金型
JP2002066483A (ja) 2000-08-25 2002-03-05 Nippon Sanso Corp ドライアイス噴射洗浄方法とその装置
US7208113B2 (en) * 2001-10-30 2007-04-24 Hitachi Chemical Co., Ltd. Sealing material tablet method of manufacturing the tablet and electronic component device
JP5060707B2 (ja) * 2004-11-10 2012-10-31 日立化成工業株式会社 光反射用熱硬化性樹脂組成物
JP4929747B2 (ja) * 2005-03-28 2012-05-09 コニカミノルタオプト株式会社 光学フィルムの製造方法
JP2007241149A (ja) * 2006-03-10 2007-09-20 Canon Inc 現像装置及び画像形成装置
JP4169362B1 (ja) 2008-01-31 2008-10-22 株式会社東洋ユニオン ドライアイスブラスト装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11216507A (ja) * 1998-01-27 1999-08-10 Nisshin Steel Co Ltd 稼働中のロール表面の異物除去装置およびロール表面の異物除去方法
JP2009258193A (ja) * 2008-04-14 2009-11-05 Japan Steel Works Ltd:The 偏光フィルムの製造方法および製造装置

Also Published As

Publication number Publication date
TWI608901B (zh) 2017-12-21
KR102145954B9 (ko) 2025-01-08
KR20140042863A (ko) 2014-04-07
KR102145954B1 (ko) 2020-08-19
JP5400193B2 (ja) 2014-01-29
TW201304909A (zh) 2013-02-01
JP2013029825A (ja) 2013-02-07

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