KR101180292B1 - A Method for Producing Polarizer - Google Patents

A Method for Producing Polarizer Download PDF

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KR101180292B1
KR101180292B1 KR1020080116801A KR20080116801A KR101180292B1 KR 101180292 B1 KR101180292 B1 KR 101180292B1 KR 1020080116801 A KR1020080116801 A KR 1020080116801A KR 20080116801 A KR20080116801 A KR 20080116801A KR 101180292 B1 KR101180292 B1 KR 101180292B1
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polarizing plate
polarizer
adhesive
manufacturing
protective film
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KR20090056843A (en
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히로미치 노마
도모야스 다케우치
리키야 마쓰모토
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후지 기카이 고교 가부시키가이샤
스미또모 가가꾸 가부시키가이샤
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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/0015—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid warp or curl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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Abstract

편광자(35)의 양면에 각각 보호 필름(31, 32)을 적층 접착하는 편광판의 제조 방법으로서, 편광자(35)와 보호 필름(31, 32)을 접착제를 개재시키고 중첩시켜 적층체(37)를 얻고, 이어서, 이 적층체(37)의 반송 방향을 따라 원호형으로 형성된 볼록 곡면, 바람직하게는 롤(38)의 외표면에 상기 적층체(37)를 밀착시키면서 활성 에너지선 조사 장치(39, 40)로부터 활성 에너지선을 조사하여 접착체를 중합 경화시킨다.

Figure R1020080116801

A method of manufacturing a polarizing plate in which the protective films 31 and 32 are laminated and bonded to both surfaces of the polarizer 35, respectively, wherein the laminate 37 is formed by overlapping the polarizer 35 and the protective films 31 and 32 with an adhesive interposed therebetween. Next, the active energy ray irradiation apparatus 39 is brought into close contact with the convex curved surface formed in an arc shape along the conveyance direction of the laminate 37, preferably the laminate 37 is brought into close contact with the outer surface of the roll 38. The energy is irradiated from 40) to polymerize and cure the adhesive.

Figure R1020080116801

Description

편광판의 제조 방법{A Method for Producing Polarizer}A method for producing polarizer

본 발명은, 액정 표시 장치를 구성하는 광학 부품의 하나로서 유용한 편광판의 제조 방법에 관한 것이다.This invention relates to the manufacturing method of the polarizing plate useful as one of the optical components which comprise a liquid crystal display device.

편광판은, 액정 표시 장치를 구성하는 광학 부품의 하나로서 유용하다. 도 4는 액정 셀에 편광판의 1종인 직선 편광 필름을 적층한 구조를 도시하고 있다. 액정 표시 패널을 구성하는 액정 셀(10)의 광원측 표면에는, 접착제층(11)에 의해 직선 편광 필름(12)이 점착 적층되고, 액정 표시 패널이 구성되어 있다. A polarizing plate is useful as one of the optical components which comprise a liquid crystal display device. 4 illustrates a structure in which a linear polarizing film of one kind of polarizing plate is laminated on a liquid crystal cell. The linear polarizing film 12 is adhesively laminated by the adhesive bond layer 11 on the light source side surface of the liquid crystal cell 10 which comprises a liquid crystal display panel, and the liquid crystal display panel is comprised.

편광판은 통상, 편광자의 양면에 보호 필름을 적층한 상태로, 액정 표시 장치에 내장되어 사용된다. 즉, 도 5에 도시하는 바와 같이, 통상의 편광판(20)은, 편광자(21)의 양면에 보호 필름(22, 23)이 접착제층(24, 25)을 개재시켜 적층되어 접착되어 있다(일본 특허 공개 제2004-245925호 공보, 일본 특허 공개 제2005-173216호 공보). A polarizing plate is normally used by being embedded in a liquid crystal display device in the state which laminated | stacked the protective film on both surfaces of the polarizer. That is, as shown in FIG. 5, in the normal polarizing plate 20, the protective films 22 and 23 are laminated | stacked and adhere | attached on both surfaces of the polarizer 21 via the adhesive layers 24 and 25 (Japan) Japanese Patent Laid-Open No. 2004-245925 and Japanese Patent Laid-Open No. 2005-173216).

그런데, 이와 같이 하여 제조되는 편광판은, 액정 셀에 점착하는 쪽이 오목해지도록 컬이 형성되거나(이하, 「리버스 컬」이라고 칭함.), 편광판 전체가 굽이지게 되는(이하, 이것을 「웨이브 컬」이라고 칭함.) 경우가 있다. 이러한 리버스 컬 및 웨이브 컬은, 액정 셀에 점착할 때에, 접착면에 기포가 남기 쉬워져 액정 패널에 불량을 발생시키는 원인이 된다. 이 때문에, 편광판은 리버스 컬 및 웨이브 컬을 발생시키지 않고, 컬이 형성되지 않거나, 또는 컬이 형성되어도 액정 셀에 점착하는 쪽이 볼록해지는 컬(이하, 「레귤러 컬」이라고 칭함.)로 하는 것이 요구되고 있다. By the way, in the polarizing plate manufactured in this way, a curl is formed so that the side which sticks to a liquid crystal cell may become concave (henceforth "reverse curl"), or the whole polarizing plate will bend (henceforth "wave curl"). Is sometimes called.) When the reverse curl and the wave curl adhere to the liquid crystal cell, bubbles are likely to remain on the adhesive surface, which causes defects in the liquid crystal panel. For this reason, a polarizing plate does not generate reverse curl and wave curl, and it is set as the curl (henceforth "regular curl") which becomes convex in the side which adheres to a liquid crystal cell even if curl is not formed or curl is formed. It is required.

본 발명의 목적은, 리버스 컬 및 웨이브 컬의 발생이 억제된 편광판의 제조 방법 및 제조 장치를 제공하는 것에 있다. The objective of this invention is providing the manufacturing method and manufacturing apparatus of a polarizing plate by which generation | occurrence | production of reverse curl and wave curl was suppressed.

본 발명자는, 상기 목적을 달성하기 위해 예의 검토를 거듭한 결과, 편광자의 한 면 또는 양면에 보호 필름을 접착제를 개재시켜 적층한 적층체를 레귤러 컬이 되도록 구부린 상태로 접착제를 중합 경화시킴으로써, 리버스 컬 및 웨이브 컬의 발생이 억제되는 것을 발견하여, 본 발명을 완성하였다.As a result of earnestly examining in order to achieve the said objective, this inventor reverse-polymerized and hardened | cured the adhesive agent in the state which bent so that the laminated body which laminated | stacked the laminated body which laminated | stacked the protective film through the adhesive agent on one or both surfaces of a polarizer to become a regular curl, It was found that the occurrence of curls and wave curls was suppressed, and completed the present invention.

즉 본 발명의 편광판의 제조 방법은, 편광자의 한 면 또는 양면에 각각 보호 필름을 적층 접착하는 편광판의 제조 방법으로서, 상기 편광자와 보호 필름을 접착제를 개재시키고 중첩시켜 적층체를 얻고, 이어서, 이 적층체의 긴 길이 방향(반송 방향)을 따라 원호형으로 형성된 볼록 곡면에 상기 적층체를 밀착시키면서 상기 접착제를 중합 경화시킨다. 상기 볼록 곡면에는, 예컨대 롤의 외주면을 이용할 수 있다.That is, the manufacturing method of the polarizing plate of this invention is a manufacturing method of the polarizing plate which laminates a protective film on one or both surfaces of a polarizer, respectively, Comprising: The said polarizer and a protective film are laminated | stacked through an adhesive agent, and a laminated body is obtained, The adhesive is polymerized while the laminate is in close contact with the convex curved surface formed in an arc shape along the long longitudinal direction (the conveying direction) of the laminate. As the convex curved surface, for example, an outer circumferential surface of a roll can be used.

상기 편광자로서는, 일축 연신되어 요오드 또는 이색성 염료가 흡착 배향된 폴리비닐알코올계 필름을, 상기 보호 필름의 한 쪽으로서는 비정질 폴리올레핀계 수지 필름을, 다른 쪽으로서는 트리아세틸셀룰로오스 필름을 들 수 있지만, 이들에 한정하는 것은 아니다.As said polarizer, although the polyvinyl alcohol-type film uniaxially stretched and the iodine or dichroic dye was adsorption-oriented, the amorphous polyolefin resin film on one side of the said protective film, and the triacetyl cellulose film on the other side are mentioned, It is not limited to.

상기 볼록 곡면에 밀착된 적층체에 활성 에너지선을 조사하여 중합 경화시키 는 것이 바람직하지만, 가열하여 중합 경화시켜도 좋다.Although it is preferable to irradiate an active energy ray to superposition | polymerize and harden | cure the laminated body in close contact with the said convex curved surface, you may heat-polymerize and harden | cure.

또한, 본 발명의 편광판의 제조 장치는, 보호 필름의 한 면 또는 편광자의 양면에 접착제를 도포하는 수단과, 편광자의 양면에 접착제층을 개재시켜 보호 필름을 중합시키는 수단과, 접착제를 중합 경화시키기 위한 수단을 포함한 편광판의 제조 장치로서, 상기 접착제를 중합 경화시키기 위한 수단이 보호 필름을 중첩시킨 편광자를 외주면에 밀착시키면서 반송하는 롤과, 이 롤의 외주면을 향해 활성 에너지선을 조사하는 활성 에너지선 조사 장치를 포함한다.Moreover, the manufacturing apparatus of the polarizing plate of this invention is a means which apply | coats an adhesive agent to one side of a protective film or both surfaces of a polarizer, a means which superpose | polymerizes a protective film through an adhesive bond layer on both surfaces of a polarizer, and polymerizes and hardens an adhesive agent. An apparatus for manufacturing a polarizing plate including means for producing a polarizing plate, the means for polymerizing and curing the adhesive, a roll conveying the polarizer having a protective film superimposed on the outer circumferential surface, and an active energy ray for irradiating active energy rays toward the outer circumferential surface of the roll. Irradiation device is included.

본 발명에 의하면, 편광자와 보호 필름을 접착제를 개재시켜 중첩시킨 적층체를, 이 적층체의 긴 길이 방향(반송 방향)을 따라 원호형으로 형성된 볼록 곡면에 밀착시키면서 활성 에너지선을 조사하여 접착제를 중합 경화시킴으로써, 편광판을 액정 셀에 접착시킬 때에, 접착면에 기포가 남아 액정 패널에 불량을 발생시키는 원인이 되는 리버스 컬 및 웨이브 컬의 발생이 억제된다.According to the present invention, an adhesive is formed by irradiating an active energy ray while bringing a laminate in which a polarizer and a protective film are superposed through an adhesive to an convex curved surface formed in an arc shape along the long longitudinal direction (transfer direction) of the laminate. By polymerizing and hardening, when adhering a polarizing plate to a liquid crystal cell, generation | occurrence | production of the reverse curl and wave curl which cause a bubble to remain in an adhesive surface and generate a defect in a liquid crystal panel is suppressed.

이하, 본 발명의 일 실시형태를 설명한다. 이 실시형태에 따른 편광판은, 편광자 및 그 양면에 접착제를 개재시켜 적층한 보호 필름으로 이루어진다. 상기 편광자로서는, 종래부터 편광판의 제조에 사용되고 있는 것(예컨대 상기한 일본 특허 공개 제2004-245925호 공보에 기재한 편광자)이 사용 가능하고, 일반적으로는 일축 연신한 폴리비닐알코올 필름에 요오드 또는 이색성 염료에 의한 염색을 실시하며, 이어서 붕산 처리하여 이루어지는 필름을 들 수 있다. 편광자의 두께는, 5 ㎛～50 ㎛ 정도가 바람직하다.EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described. The polarizing plate which concerns on this embodiment consists of a polarizer and the protective film laminated | stacked through the adhesive agent on both surfaces. As said polarizer, what is conventionally used for manufacture of a polarizing plate (for example, the polarizer described in Unexamined-Japanese-Patent No. 2004-245925) can be used, and iodine or dichroic is generally used for the uniaxially stretched polyvinyl alcohol film. The film | membrane which performs dyeing by a dye and then boric-acid-processes is mentioned. As for the thickness of a polarizer, about 5 micrometers-about 50 micrometers are preferable.

상기 편광자의 양면에 적층되는 보호 필름은, 동일하여도 좋고, 또는 상이한 종류여도 좋다. 상이한 종류의 보호 필름을 사용하는 경우, 보호 필름의 한 쪽으로서는, 비정질 폴리올레핀수지 필름, 폴리에스테르 수지 필름, 아크릴 수지 필름, 폴리카보네이트 수지 필름, 폴리술폰 수지 필름, 지환식 폴리이미드 수지 필름 등의 투습도가 낮은 수지 필름이 사용되고 있다. 비정질 폴리올레핀 수지 필름에는, 예컨대 독일의 티코나(Ticona)사제의 「토파스」, 제이에스알(주)사제의 「아톤」, 니혼제온(주)사제의 「제오노아(ZEONOR)」나 「제오넥스(ZEONEX)」, 미쓰이화학(주)사제의 「아펠」 등이 있다. 보호 필름의 다른 쪽으로서는, 이들 필름 외에, 예컨대 트리아세틸셀룰로오스 필름이나 디아세틸셀룰로오스 필름 등의 셀룰로오스아세테이트계의 수지 필름이 사용되고 있다. 트리아세틸셀룰로오스 필름에는, 예컨대 후지 사진 필름(주)사제의 「후지테크 TD80」, 「후지테크 TD80UF」 및 「후지테크 TD80UZ」, 코니카(주)사제의 「KC8UX2M」 및 「KC8UY」 등이 있다.The protective film laminated | stacked on both surfaces of the said polarizer may be the same, or may be a different kind. When using a different kind of protective film, as one side of the protective film, moisture permeability, such as an amorphous polyolefin resin film, a polyester resin film, an acrylic resin film, a polycarbonate resin film, a polysulfone resin film, an alicyclic polyimide resin film, etc. A low resin film is used. In the amorphous polyolefin resin film, for example, "topas" made by Germany's Ticona Corporation, "Aton" made by JSR Co., Ltd., "ZEONOR" made by Nihon Xeon Co., Ltd. and "Zeonex" ZEONEX) "," Apel "by Mitsui Chemicals, Inc., etc. are mentioned. As the other side of a protective film, besides these films, cellulose acetate type resin films, such as a triacetyl cellulose film and a diacetyl cellulose film, are used, for example. Examples of the triacetyl cellulose film include "FUJI TECH TD80", "FUJI TECH TD80UF" and "FUJI TECH TD80UZ" by Fuji Photo Film Co., Ltd., "KC8UX2M" and "KC8UY" by Konica Corporation.

보호 필름은, 편광자에의 접합에 앞서서, 접합면에 비누화처리, 코로나처리, 프라이머처리, 앵커코팅처리 등의 이접착 처리가 실시되어도 좋다. 또한 보호 필름의 편광자에의 접합면과 반대측 표면에는, 하드코트층, 반사방지층, 방현층 등의 각종 처리층을 갖고 있어도 좋다. 보호 필름의 두께는 통상 5 ㎛～200 ㎛ 정도의 범위이며, 바람직하게는 10 ㎛～120 ㎛, 더 바람직하게는 10 ㎛～85 ㎛이다.Prior to the bonding to the polarizer, the bonding film may be subjected to easy bonding treatment such as saponification treatment, corona treatment, primer treatment, anchor coating treatment, or the like. Moreover, you may have various process layers, such as a hard-coat layer, an antireflection layer, an glare-proof layer, on the surface on the opposite side to the bonding surface to the polarizer of a protective film. The thickness of a protective film is the range of 5 micrometers-about 200 micrometers normally, Preferably it is 10 micrometers-120 micrometers, More preferably, it is 10 micrometers-85 micrometers.

접착제로서는, 내후성이나 굴절률, 양이온 중합성 등의 관점에서, 예컨대 일본 특허 공개 제2004-245925호 공보에 기재한 바와 같은, 분자 내에 방향환을 포함 하지 않는 에폭시 수지를 접착제에 이용할 수 있지만, 이것에 한정되는 것이 아니라, 종래부터 편광판의 제조에 사용되고 있는 각종 접착제가 채용 가능하다. 상기한 에폭시 수지로서는, 예컨대 수소화에폭시 수지, 지환식 에폭시 수지, 지방족 에폭시 수지 등이 사용되고 있다. 에폭시 수지 성분에 중합 개시제, 예컨대 활성 에너지선 조사로 중합시키기 위한 광 양이온 중합 개시제, 가열에 의해 중합시키기 위한 열 양이온 중합 개시제, 또한 다른 첨가제(증감제 등)를 첨가하여 도포용 접착제 조성물을 조제한다.As the adhesive, an epoxy resin which does not contain an aromatic ring in the molecule can be used for the adhesive, for example, from the viewpoint of weather resistance, refractive index, cation polymerization property, and the like. It is not limited, Various adhesives conventionally used for manufacture of a polarizing plate are employable. As said epoxy resin, a hydrogenated epoxy resin, an alicyclic epoxy resin, an aliphatic epoxy resin, etc. are used, for example. A polymerization initiator such as a photocationic polymerization initiator for polymerizing by active energy ray irradiation, a thermal cationic polymerization initiator for polymerizing by heating, and other additives (sensitizer, etc.) are added to the epoxy resin component to prepare an adhesive composition for application. .

다음에 도면을 참조하면서 본 발명의 편광판의 제조 장치 및 제조 방법을 설명한다. 도 1은 본 발명의 편광판의 제조 장치의 일 실시형태를 도시하는 개략도이다. Next, the manufacturing apparatus and manufacturing method of the polarizing plate of this invention are demonstrated, referring drawings. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows one Embodiment of the manufacturing apparatus of the polarizing plate of this invention.

도 1에 도시하는 편광판의 제조 장치(30)는, 보호 필름(31, 32)의 한 면에 접착제를 도포하기 위한 접착제 도장 장치(33, 34)와, 보호 필름(31, 32), 편광자(35)를 중첩시키기 위한 닙 롤(36)과, 상기 보호 필름(31, 32)과 편광자(35)가 접합된 적층체(37)를 밀착시키기 위한 롤(38)과, 이 롤(38)의 외주면과 상대하는 위치에 설치된 제1 활성 에너지선 조사 장치(39, 40)와, 이것보다 반송 방향 하류측에 더 설치된 제2 활성 에너지선 조사 장치(41)와, 반송용 닙 롤(42)을 반송 방향을 따라 순서대로 설치하고 있다.The manufacturing apparatus 30 of the polarizing plate shown in FIG. 1 has adhesive coating apparatuses 33 and 34 for apply | coating an adhesive agent to one surface of the protective films 31 and 32, protective films 31 and 32, and a polarizer ( The nip roll 36 for superimposing 35, the roll 38 for contact | adhering the laminated body 37 with which the said protective films 31 and 32 and the polarizer 35 were bonded, and the roll 38 of 1st active energy ray irradiation apparatuses 39 and 40 provided in the position which opposes an outer peripheral surface, the 2nd active energy ray irradiation apparatus 41 further installed in the conveyance direction downstream than this, and the nip roll 42 for conveyances. It installs in order along the conveyance direction.

즉, 롤형으로 권취된 상태로부터 연속적으로 인출되는 보호 필름(31, 32)은, 접착제 도장 장치(33, 34)에 의해 한 면에 접착제가 도포된다. 그리고, 상기 보호 필름(31, 32)과 마찬가지로 하여 연속적으로 인출된 편광자(35)의 양면에 각각 보 호 필름(31, 32)이 닙 롤(36)에 의해 접착제를 개재시켜 중첩되어 적층체(37)가 형성된다. 이 적층체(37)를 롤(38)의 외주면에 밀착시키면서 반송하는 과정에서, 제1 활성 에너지선 조사 장치(39, 40)로부터 롤(38)의 외주면을 향해 활성 에너지선을 조사하고, 접착제를 중합 경화시킨다. 또한, 반송 방향 하류측에 배치되는 제2 활성 에너지선 조사 장치(41)는 접착제를 완전히 중합 경화시키기 위한 장치로서, 필요에 따라 생략할 수 있다.That is, the adhesive film is apply | coated to the one surface by the adhesive coating devices 33 and 34 for the protective films 31 and 32 continuously drawn out from the state wound by roll shape. In addition, the protective films 31 and 32 are superposed on both surfaces of the polarizers 35 continuously drawn out in the same manner as the protective films 31 and 32, respectively, with the nip roll 36 interposed therebetween, so that the laminates ( 37) is formed. In the process of conveying this laminated body 37 in close contact with the outer peripheral surface of the roll 38, an active energy ray is irradiated toward the outer peripheral surface of the roll 38 from the 1st active energy ray irradiation apparatus 39 and 40, and an adhesive agent Polymerization curing. In addition, the 2nd active energy ray irradiation apparatus 41 arrange | positioned downstream of a conveyance direction is an apparatus for polymerizing and hardening an adhesive completely, and can be omitted as needed.

보호 필름(31, 32)에의 접착제의 도장 방법은 특별히 한정되지 않지만, 예컨대 닥터 블레이드, 와이어 바, 다이 코터, 콤마 코터, 그라비아 코터 등, 여러 가지의 도장 방식을 이용할 수 있다. 이 중, 박막 도장, 패스라인의 자유도, 폭 넓이에 대한 대응 등을 고려하면, 접착제 도장 장치(33, 34)로서는 그라비아 롤이 바람직하다.Although the coating method of the adhesive agent to the protective films 31 and 32 is not specifically limited, For example, various coating methods, such as a doctor blade, a wire bar, a die coater, a comma coater, a gravure coater, can be used. Among them, gravure rolls are preferable as the adhesive coating devices 33 and 34 in consideration of thin film coating, the degree of freedom of the pass line, the correspondence to the width, and the like.

접착제 도장 장치(33, 34)로서 그라비아 롤을 이용하여 접착제의 도포를 행하는 경우, 접착제층의 두께는 라인 속도에 대한 그라비아 롤의 속도비인 드로우비에 의해 조정한다. 보호 필름(31, 32)의 라인 속도를 15～50 m/분으로 하고, 그라비아 롤을 이 보호 필름(31, 32)의 반송 방향과 역방향으로 회전시켜, 그라비아 롤의 속도를 5～500 m/분(드로우비 1～10)으로 함으로써, 접착제층의 도포 두께를 약 1 ㎛～10 ㎛로 조정한다.When applying an adhesive using a gravure roll as the adhesive coating devices 33 and 34, the thickness of an adhesive bond layer is adjusted by the draw ratio which is the speed ratio of the gravure roll with respect to a line speed. The line speed of the protective films 31 and 32 is set to 15-50 m / min, and the gravure roll is rotated in the opposite direction to the conveyance direction of this protective films 31 and 32, and the speed of the gravure roll is 5-500 m / min. By setting it as powder (draw ratio 1-10), the application thickness of an adhesive bond layer is adjusted to about 1 micrometer-10 micrometers.

롤(38)은, 외주면이 경면 마무리된 볼록 곡면을 구성하고 있고, 그 표면에 적층체(37)를 밀착시키면서 반송하며, 그 과정에서 활성 에너지선 조사 장치(39, 40)에 의해 접착제를 중합 경화시킨다. 접착제를 중합 경화시켜, 적층체(37)를 충 분히 밀착시키는 데에 있어서, 롤(38)의 직경은 특별히 한정되지 않지만, 접착층이 미경화 상태인 적층체(37)가, 롤(38)을 통과하는 동안에 활성 에너지선을 자외선의적산 광량으로 30 mJ/cm2로 조사되도록 하는 것이 바람직하다. 롤(38)은, 적층체(37)의 라인의 움직임에 따르는 구동 또는 회전 구동시켜도 좋고, 또는 고정시켜 표면을 적층체(37)가 미끄러지도록 하여도 좋다. 또한, 롤(38)은 활성 에너지선의 조사에 의한 중합 경화시에 적층체(37)에 열이 잘 가해지지 않게 하기 위해 냉각롤로서 작용시켜도 좋다. 그 경우의 냉각롤의 표면 온도는, 20℃～25℃가 바람직하다.The roll 38 comprises the convex curved surface of which the outer peripheral surface was mirror-finished, conveys, while adhering the laminated body 37 to the surface, and polymerizes an adhesive agent by the active energy ray irradiation apparatus 39 and 40 in the process. Harden. Although the diameter of the roll 38 is not specifically limited in polymerizing hardening | curing an adhesive agent and the adhesiveness of the laminated body 37 fully, the laminated body 37 in which an adhesive layer is an uncured state will roll the roll 38. It is preferable to let the active energy ray be irradiated at 30 mJ / cm 2 with the accumulated amount of ultraviolet rays during the passage. The roll 38 may be driven or rotated in accordance with the movement of the line of the laminate 37, or may be fixed so that the surface of the laminate 37 slides. In addition, the roll 38 may act as a cooling roll in order to prevent heat from being applied to the laminated body 37 at the time of polymerization hardening by irradiation of an active energy ray. As for the surface temperature of the cooling roll in that case, 20 degreeC-25 degreeC is preferable.

활성 에너지선의 조사에 의해 중합 경화를 행하는 경우, 이용하는 광원은 특별히 한정되지 않지만, 파장 400 ㎚ 이하에 발광 분포를 갖는다, 예컨대 저압 수은등, 중압 수은등, 고압 수은등, 초고압 수은등, 케미컬램프, 블랙라이트램프, 마이크로웨이브 여기 수은등, 메탈할라이드램프 등을 이용할 수 있다. 에폭시 수지 조성물에의 광 조사 강도는, 목적으로 하는 조성물마다 결정되는 것으로서, 역시 특별히 한정되지 않지만, 개시제의 활성화에 유효한 파장 영역의 조사 강도가 O.1 mJ/cm2～100 mJ/cm2인 것이 바람직하다. 수지 조성물에의 광 조사 강도가 0.1 mJ/cm2 미만이면, 반응 시간이 너무 길어지고, 100 mJ/cm2를 초과하면, 램프로부터 복사되는 열 및 조성물의 중합시의 발열에 의해, 에폭시 수지 조성물의 황변이나 편광자의 열화를 발생시킬 가능성이 있다.When performing polymerization curing by irradiation of active energy rays, the light source to be used is not particularly limited, but has a luminescence distribution at a wavelength of 400 nm or less, for example, a low pressure mercury lamp, a medium pressure mercury lamp, a high pressure mercury lamp, an ultra high pressure mercury lamp, a chemical lamp, a black light lamp, Microwave-excited mercury lamps, metal halide lamps and the like can be used. The light irradiation intensity to the epoxy resin composition is determined for each desired composition and is not particularly limited, but the irradiation intensity of the wavelength range effective for the activation of the initiator is from 0.1 mJ / cm 2 to 100 mJ / cm 2 . It is preferable. When the light irradiation intensity to the resin composition is less than 0.1 mJ / cm 2 , the reaction time becomes too long, and when it exceeds 100 mJ / cm 2 , the epoxy resin composition is produced by the heat radiated from the lamp and the heat generated during the polymerization of the composition. There is a possibility of causing yellowing and deterioration of the polarizer.

조성물에의 활성 에너지선의 조사 시간은, 경화하는 조성물마다 제어되는 것 으로서, 역시 특별히 한정되지 않지만, 조사 강도와 조사 시간의 곱으로서 나타내는 적산 광량이 10 mJ/cm2～5,000 mJ/cm2가 되도록 설정되는 것이 바람직하다. 예컨대 상기 에폭시 수지 조성물에의 적산 광량이 10 mJ/cm2 미만이면, 개시제 유래의 활성종의 발생이 충분하지 않고, 얻어지는 보호 필름의 경화가 불충분해질 가능성이 있으며, 한 쪽에서 그 적산 광량이 5,000 mJ/cm2를 초과하면, 조사 시간이 매우 길어져, 생산성 향상에는 불리한 것이 된다.The irradiation time of the active energy ray to the composition is controlled for each composition to be cured and is not particularly limited, but the amount of accumulated light expressed as the product of the irradiation intensity and the irradiation time is 10 mJ / cm 2 to 5,000 mJ / cm 2 . It is preferable to be set. For example, when the amount of accumulated light in the epoxy resin composition is less than 10 mJ / cm 2 , generation of active species derived from an initiator may not be sufficient, and curing of the resulting protective film may be insufficient, and the amount of accumulated light in one side may be 5,000 mJ. If it exceeds / cm 2 , irradiation time becomes very long, which is disadvantageous for productivity improvement.

자외선을 활성 에너지선으로 할 때, 적층체(37)의 라인 속도는 특별히 한정되지 않고, 긴 길이 방향(반송 방향)으로 100 N～800 N의 장력 하, 또한 적어도 조사 강도를 30 mJ/cm2 이상, 조사 시간을 O.3초 이상의 조건 하에서, 적층체(37)에 활성 에너지선을 조사하는 것이 바람직하다. 또한, 활성 에너지선 장치(39, 40)에 의한 활성 에너지선의 조사로 적산 광량이 불충분한 경우는, 보조적으로 제2 활성 에너지선 장치(41)를 설치하고, 활성 에너지선을 추가 조사시켜 적층체(37)의 접착제의 중합을 완료시켜도 좋다.When the ultraviolet ray is an active energy ray, the line speed of the laminate 37 is not particularly limited, and the irradiation intensity is 30 mJ / cm 2 under a tension of 100 N to 800 N in the long longitudinal direction (conveying direction). As mentioned above, it is preferable to irradiate an active energy ray to the laminated body 37 on conditions for 0.3 second or more of irradiation time. If the accumulated light amount is insufficient due to irradiation of the active energy rays by the active energy ray devices 39 and 40, the second active energy ray device 41 is auxiliaryly installed, and the active energy ray is further irradiated to laminate the laminate. You may complete superposition | polymerization of the adhesive agent of (37).

이와 같이 하여 얻어진 편광판은, 종래와 같이 활성 에너지선 장치의 아래를 소정의 장력으로 수평으로 반송시켜 통과시키는 경우(도 3을 참조)에 비해, 리버스 컬 및 웨이브 컬의 발생이 억제되어 있기 때문에, 액정 셀에 점착할 때에, 접착면에 기포가 남지 않고, 따라서 액정 패널의 불량 발생을 저감할 수 있다.Since the polarizing plate thus obtained is suppressed in the generation of reverse curl and wave curl as compared with the case where the bottom of the active energy ray device is horizontally conveyed under a predetermined tension and passed through (see FIG. 3), When adhering to a liquid crystal cell, air bubbles do not remain on the adhesive surface, and therefore, occurrence of defects in the liquid crystal panel can be reduced.

이하, 실시예를 들어 본 발명을 구체적으로 설명하지만, 본 발명은 이하의 실시예에 한정되는 것이 아니다.Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to a following example.

[실시예 1] Example 1

두께 75 ㎛의 비정질 폴리올레핀 수지 필름 「ZEONOR」(니혼제온사제)와, 두께 80 ㎛의 트리아세틸셀룰로오스 필름 「KC8UX2MW」(코니카미놀타사제)를 준비하였다. 비정질 폴리올레핀 수지 필름 및 트리아세틸셀룰로오스 필름의 각각의 한 면에 접착제로서 에폭시 수지 조성물 「KRX492-30」(ADEKA사제)을 접착제 도장 장치인 마이크로 챔버 닥터(후지기계사제)를 이용하여 도장하였다. 적층체의 라인 속도를 11 m/분으로 하고, 그라비아 롤을 적층재의 반송 방향과 역방향으로 회전시켜, 그라비아 롤의 속도 22 m/분으로 함으로써, 접착제층의 두께를 약 2 ㎛로 하였다.A 75-micrometer-thick amorphous polyolefin resin film "ZEONOR" (manufactured by Nippon Zeon) and a 80-micrometer-thick triacetyl cellulose film "KC8UX2MW" (manufactured by Konica Minolta) were prepared. An epoxy resin composition "KRX492-30" (manufactured by ADEKA Corporation) was coated on each side of the amorphous polyolefin resin film and the triacetyl cellulose film using an adhesive coating device using a microchamber doctor (manufactured by Fuji Machine Corporation). The thickness of the adhesive bond layer was made into about 2 micrometers by setting the line speed of the laminated body to 11 m / min, rotating the gravure roll in the reverse direction to the conveyance direction of a laminated material, and making the speed of the gravure roll 22 m / min.

다음에, 두께 25 ㎛의 요오드가 흡착 배향된 폴리비닐알코올계 필름의 양면에 상기 에폭시 수지 조성물을 개재시켜 상기 비정질 폴리올레핀 수지 필름과, 상기 트리아세틸셀룰로오스 필름을 닙롤에 의해 중첩시켰다.Next, the amorphous polyolefin resin film and the triacetyl cellulose film were overlapped by a nip roll through the epoxy resin composition on both sides of a polyvinyl alcohol-based film in which iodine having a thickness of 25 μm was adsorbed and oriented.

상기 편광판을 자외선 조사 장치(GS-YUASA사제)에 구비된 자외선 램프인 EHAN1700NAL 고압 수은 램프 2등으로부터 조사되는 자외선 가운데를 긴 길이 방향으로 600N의 장력 하에서, 상기 편광판의 트리아세틸셀룰로오스 필름이 적층된 면을, 23℃의 냉각롤의 외주면에 밀착시키면서 라인 속도 11 m/분으로 통과시켰다. 그 때의 자외선의 적산 광량은 110(mJ/cm2)이었다. 자외선의 적산 광량은 파장역 280 ㎚～320 ㎚의 UVB 영역에서의 조사를 기초로 계측되었다. 그 후, 폭 방향이 1330 ㎜인 적층체를 긴 길이 방향으로 600 ㎜로 절단한 후, 하기의 방법으로써 웨 이브 컬의 정도를 평가하였다.The surface in which the triacetylcellulose film of the said polarizing plate was laminated | stacked under the tension of 600 N in the longitudinal direction in the middle of the ultraviolet-ray irradiated from the EHAN1700NAL high-pressure mercury lamp 2 lamp which is an ultraviolet lamp provided in the ultraviolet irradiation apparatus (made by GS-YUASA) to the said polarizing plate. Was passed through at a line speed of 11 m / min while being in close contact with the outer circumferential surface of the 23 ° C cooling roll. The accumulated light amount of ultraviolet rays at that time was 110 (mJ / cm 2 ). The accumulated light amount of ultraviolet rays was measured based on irradiation in the UVB region in the wavelength range of 280 nm to 320 nm. Then, after cutting the laminated body whose width direction was 1330 mm to 600 mm in the long longitudinal direction, the grade of the wave curl was evaluated by the following method.

즉, 도 2(A)에 도시하는 바와 같이, 트리아세틸셀룰로오스 필름이 접합된 면을 아래로 한 편광판(50)의 파수, 파장, 진폭의 값을 각각 측정하였다. 파수는 편광판(50)의 폭 방향으로 나열하는 파의 산의 수이고, 도 2(B)에 도시하는 바와 같이 파장(51)은 편광판(50)의 파의 산의 정점간의 거리를 측정하였다. 또한 동도면 (A)에 도시하는 바와 같이 진폭(52)은 편광판(50)을 폭 방향으로 5 등분한 a～e의 각각의 지점에서의 산과 곡의 정점의 길이를 측정하고, 그 절반의 값으로 하였다. 이들의 측정 결과를 표 1에 나타낸다.That is, as shown to FIG. 2 (A), the value of the wave number, wavelength, and amplitude of the polarizing plate 50 which faced the surface to which the triacetyl cellulose film was bonded was measured, respectively. The number of waves is the number of waves of the waves arranged in the width direction of the polarizing plate 50, and as shown in FIG. 2B, the wavelength 51 measured the distance between the peaks of the waves of the waves of the polarizing plate 50. In addition, as shown to the same figure (A), the amplitude 52 measures the length of the peak of a peak and a mountain at each point of a-e which divided the polarizing plate 50 equally in the width direction, and its half value It was made. Table 1 shows the results of these measurements.

[실시예 2] Example 2

자외선의 적산 광량을, 143(mJ/cm2)으로 한 것 이외는, 실시예 1과 마찬가지로 하여 편광판을 얻었다. 결과를 표 1에 나타낸다.The polarizing plate was obtained like Example 1 except having set the accumulated light quantity of an ultraviolet-ray to 143 (mJ / cm <2> ). The results are shown in Table 1.

[비교예 1]Comparative Example 1

폴리비닐알코올계 필름의 양면에 비정질 폴리올레핀 수지 필름과, 트리아세틸셀룰로오스 필름이, 에폭시 수지 조성물 「KRX492-32」(ADEKA사제)를 접착제로서 개재시킴으로써 적층된 적층체(60)를, 도 3에 도시하는 바와 같이 자외선 조사 장치(61)(퓨전사제)에 구비된 자외선 램프인 LH10-60UV 무전극 램프 1등으로부터 조사되는 자외선 가운데를 600N의 장력 하에서, 롤러에 밀착시키지 않고, 수평 방향으로 라인 속도 11 m/분으로 통과시켜, 중합 경화를 행하였다. 그 때의 자외선의 적산 광량은 119(mJ/cm2)로 하였다. 그 이외는, 실시예 1과 마찬가지로 하여 편광판을 얻었다. 결과를 표 1에 나타낸다.Fig. 3 shows a laminate 60 in which an amorphous polyolefin resin film and a triacetyl cellulose film are laminated on both sides of a polyvinyl alcohol-based film by interposing an epoxy resin composition “KRX492-32” (manufactured by ADEKA Corporation) as an adhesive. As described above, the center of ultraviolet rays irradiated from the LH10-60UV electrodeless lamp 1 lamp, which is an ultraviolet lamp provided in the ultraviolet irradiating device 61 (manufactured by Fusion Corporation), does not adhere to the roller under a tension of 600 N, and the line speed is 11 in the horizontal direction. It passed at m / min and superposed | polymerized hardening was performed. The accumulated light amount of ultraviolet rays at that time was 119 (mJ / cm 2 ). Other than that was carried out similarly to Example 1, and obtained the polarizing plate. The results are shown in Table 1.

[비교예 2]Comparative Example 2

자외선의 적산 광량을, 27(mJ/cm2) 편광한 것 이외는, 비교예 1과 마찬가지로 행하였다. 결과를 표 1에 나타낸다.It carried out similarly to the comparative example 1 except having accumulated the light quantity of the ultraviolet-ray polarized by 27 (mJ / cm <2> ). The results are shown in Table 1.

실시예 1Example 1 실시예 2Example 2 비교예 1Comparative Example 1 비교예 2Comparative Example 2 UV 조사방법UV irradiation method 롤 있음In roll 롤 있음In roll 롤 없음No rolls 롤 없음No rolls UV 적산 광량
(mJ/㎠)UV accumulated light quantity
(mJ / ㎠) 110110 143143 119119 2727 파수
(개)wave number
(dog) 00 00 1717 1111 파장
(mm)wavelength
(mm) 00 00 67.6567.65 104.55104.55 진폭
(mm)amplitude
(mm) 1One 00 00 13.2513.25 44 22 00 00 13.513.5 4.754.75 33 00 00 12.7512.75 55 44 00 00 12.512.5 66 55 00 00 14.2514.25 4.254.25

표 1에 도시하는 바와 같이, 비교예 1 및 비교예 2의 편광판은 모두 웨이브 컬이 발생하고, 비교예 2에 비해 자외선의 적산 광량이 많은 비교예 1의 편광판이 강하게 웨이브 컬이 생기고 있었다. 이것에 대하여, 실시예 1 및 실시예 2에서 얻은 편광판의 파수는 0이고, 리버스 컬 및 웨이브 컬의 발생이 억제되어 있는 것을 알았다. 또한, 실시예 1 및 실시예 2는, 얻어진 필름을 20 cm×30 cm의 직사각형으로 잘라내어, 평판 위에 설치하고, 네 코너부의 휘어짐 상황(컬)을 확인했지만, 컬은 전혀 볼 수 없었다.As shown in Table 1, both the polarizing plates of the comparative example 1 and the comparative example 2 generate | occur | produced a wave curl, and the polarizing plate of the comparative example 1 with much accumulated amount of ultraviolet rays compared with the comparative example 2 generated the wave curl strongly. On the other hand, the wave numbers of the polarizing plates obtained in Example 1 and Example 2 were 0, and it turned out that generation of reverse curl and wave curl is suppressed. In addition, in Example 1 and Example 2, the obtained film was cut out to the rectangle of 20 cm x 30 cm, it was installed on the flat plate, and the curvature state (curl) of the four corner parts was confirmed, but the curl was not seen at all.

도 1은 본 발명에 따른 편광판의 제조 장치의 일 실시형태를 도시하는 개략측면도이다.BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows one Embodiment of the manufacturing apparatus of the polarizing plate which concerns on this invention.

도 2의 (A), (B)는 편광판에 생긴 웨이브 컬의 평가 방법을 도시하는 개략설명도이다.2 (A) and 2 (B) are schematic explanatory diagrams showing a method for evaluating wave curl generated in a polarizing plate.

도 3은 비교예 1, 2에서의 활성 에너지선의 조사에 의한 접착제의 중합 경화 방법을 도시하는 설명도이다.It is explanatory drawing which shows the polymerization hardening method of the adhesive agent by irradiation of the active energy ray in Comparative Examples 1 and 2. FIG.

도 4는 액정 셀에 편광판의 1종인 직선 편광 필름을 적층한 구조를 예시하는 설명도이다.It is explanatory drawing which illustrates the structure which laminated | stacked the linear polarizing film which is 1 type of polarizing plate on the liquid crystal cell.

도 5는 편광판의 구성을 예시하는 설명도이다.5 is an explanatory diagram illustrating a configuration of a polarizing plate.

[부호의 설명] [ Description of the Code ]

30: 편광판의 제조 장치30: manufacturing apparatus of polarizing plate

31, 32: 보호 필름31, 32: protective film

33, 34: 접착제 도장 장치33, 34: adhesive coating device

35: 편광자35: polarizer

36: 닙 롤36: Nip Roll

37: 적층체37: laminate

38: 롤38: roll

39, 40, 41: 활성 에너지선 조사 장치39, 40, 41: active energy ray irradiation device

42: 반송용 닙 롤42: nip roll for conveyance

50: 편광판50: polarizer

51: 파장51: wavelength

52: 진폭52: amplitude

60: 적층체60: laminate

61: 자외선 조사 장치61: ultraviolet irradiation device

Claims (6)

편광자의 한 면 또는 양면에 각각 보호 필름을 적층하여 접착하는 편광판의 제조 방법으로서, 상기 편광자와 보호 필름을 접착제를 개재시키고 중첩시켜 적층체를 얻고, 이어서, 이 적층체의 긴 길이 방향을 따라 원호형으로 형성된 볼록 곡면에 상기 적층체를 밀착시키면서 상기 접착제를 중합 경화시키는 편광판의 제조 방법.A method of manufacturing a polarizing plate in which a protective film is laminated and bonded to one or both surfaces of a polarizer, respectively, wherein the polarizer and the protective film are interposed with an adhesive to overlap each other to obtain a laminate, and then a circle along the long length direction of the laminate. The manufacturing method of the polarizing plate which polymerizes and hardens the said adhesive agent, contact | adhering the said laminated body to the convex curved surface formed in arc shape. 제1항에 있어서, 상기 볼록 곡면이 롤의 외주면인 편광판의 제조 방법.The manufacturing method of the polarizing plate of Claim 1 whose said convex curved surface is an outer peripheral surface of a roll. 제1항 또는 제2항에 있어서, 상기 편광자가, 일축 연신되어 요오드 또는 이색성 염료가 흡착 배향된 폴리비닐알코올계 필름이고, 상기 보호 필름의 한 쪽이 비정질 폴리올레핀 수지 필름이며, 다른 쪽이 트리아세틸셀룰로오스 필름인 편광판의 제조 방법.The said polarizer is a polyvinyl alcohol-type film in which the said polarizer is uniaxially stretched, and the iodine or dichroic dye was adsorption-oriented, one side of the said protective film is an amorphous polyolefin resin film, and the other is a tree The manufacturing method of the polarizing plate which is an acetyl cellulose film. 제1항에 있어서, 상기 볼록 곡면에 밀착된 적층체에 활성 에너지선을 조사하여 중합 경화시키는 편광판의 제조 방법.The manufacturing method of the polarizing plate of Claim 1 which irradiates an active energy ray to the laminated body which contact | adhered to the said convex curved surface, and polymerizes hardening. 보호 필름의 한 면 또는 편광자의 양면에 접착제를 도포하는 수단과, 편광자의 한 면 또는 양면에 접착제층을 개재시켜 보호 필름을 중첩시키는 수단과, 접착 제를 중합 경화시키기 위한 수단을 포함한 편광판의 제조 장치로서, 상기 접착제를 중합 경화시키기 위한 수단이 보호 필름을 중첩시킨 편광자를 외주면에 밀착시키면서 반송하는 롤과, 이 롤의 외주면을 향해 활성 에너지선을 조사하는 활성 에너지선 조사 장치를 포함하는 편광판의 제조 장치.Manufacture of a polarizing plate comprising means for applying an adhesive to one side or both sides of a protective film, a means for superposing a protective film through an adhesive layer on one side or both sides of a polarizer, and a means for polymerizing and curing an adhesive An apparatus, comprising: a roll for conveying while means for polymerizing and curing the adhesive, while adhering a polarizer in which a protective film is superimposed on an outer circumferential surface, and an active energy ray irradiation device for irradiating an active energy ray toward the outer circumferential surface of the roll. Manufacturing device. 제5항에 있어서, 상기 활성 에너지선 조사 장치가 자외선 조사 장치인 편광판의 제조 장치.The manufacturing apparatus of the polarizing plate of Claim 5 whose said active energy ray irradiation apparatus is an ultraviolet irradiation apparatus.
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