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1. WO2012063954 - METHODS FOR PRODUCING POLARIZING LAMINATE FILM AND POLARIZING PLATE

Publication Number WO/2012/063954
Publication Date 18.05.2012
International Application No. PCT/JP2011/076130
International Filing Date 08.11.2011
IPC
G02B 5/30 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
B29C 41/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
41Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
02for making articles of definite length, i.e. discrete articles
12Spreading-out the material on a substrate
B29C 55/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
04uniaxial, e.g. oblique
06parallel with the direction of feed
G02F 1/1335 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
CPC
B29C 55/023
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
023using multilayered plates or sheets
B29C 55/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
04uniaxial, e.g. oblique
06parallel with the direction of feed
B29C 55/065
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02of plates or sheets
04uniaxial, e.g. oblique
06parallel with the direction of feed
065in several stretching steps
B29K 2029/04
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING 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
2029Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals ; or derivatives thereof; as moulding material
04PVOH, i.e. polyvinyl alcohol
B29K 2995/0034
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING 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
2995Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
0018having particular optical properties, e.g. fluorescent or phosphorescent
0034Polarising
G02B 5/3025
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
Applicants
  • 住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED [JP]/[JP] (AllExceptUS)
  • 九内 雄一朗 KUNAI, Yuichiro [JP]/[JP] (UsOnly)
Inventors
  • 九内 雄一朗 KUNAI, Yuichiro
Agents
  • 中山 亨 NAKAYAMA, Tohru
Priority Data
2010-25164710.11.2010JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHODS FOR PRODUCING POLARIZING LAMINATE FILM AND POLARIZING PLATE
(FR) PROCÉDÉS DE PRODUCTION DE FILM STRATIFIÉ POLARISANT ET PLAQUE POLARISANTE
(JA) 偏光性積層フィルムおよび偏光板の製造方法
Abstract
(EN)
A method for producing a polarizing laminate film including a base film and a polarizer layer formed on one surface of the base film involves, in the following order: a resin film laminating step of laminating a resin film made of a polyvinyl alcohol resin and having a thickness of 50 µm or less onto one surface of a base film, to thereby obtain a laminate film; a stretching step of uniaxially stretching the laminate film; and a dyeing step of dyeing the resin film of the uniaxially stretched laminate film with a dichroic dye, to thereby form a polarizer layer. The present invention can provide a method for producing a polarizing laminate film having a thin polarizer layer without giving rise to the problem that the ends of the base film are folded inside.
(FR)
L'invention concerne un procédé de production de film stratifié polarisant qui comprend un film de base et une couche de polarisateur formée sur un côté du film de base, lequel procédé comprend les étapes suivantes, dans l'ordre : une étape de stratification d'un film de résine consistant à stratifier un film de résine fait d'une résine à base d'alcool de polyvinyle et ayant une épaisseur de 50 µm ou moins sur un côté du film de base, ceci de manière à obtenir un film stratifié ; une étape d'étirement consistant à étirer uniaxialement le film stratifié ; et une étape de coloration consistant à colorer le film de résine du film stratifié étiré uniaxialement à l'aide d'un colorant dichroïque de manière à former ainsi une couche de polarisateur. L'invention concerne un procédé qui permet de produire un film stratifié polarisant ayant une couche de polarisateur fine sans que survienne le problème où les extrémités du film de base sont repliées vers l'intérieur.
(JA)
 厚さが50μm以下のポリビニルアルコール系樹脂からなる樹脂フィルムを基材フィルムの一方の面に貼合して積層フィルムを得る樹脂フィルム貼合工程と、上記積層フィルムを一軸延伸する延伸工程と、上記一軸延伸積層フィルムの前記樹脂フィルムを二色性色素で染色して偏光子層を形成する染色工程とをこの順で含む、基材フィルムと、該基材フィルムの一方の面に形成された偏光子層とを備える偏光性積層フィルムの製造方法。本発明によれば、基材フィルムの端部が折れ込んでしまう不具合を招くことなく、薄型の偏光子層を有する偏光性積層フィルムを製造する方法を提供することができる。
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