METHOD FOR MANUFACTURING POLARIZING FILM AND DEVICE FOR MANUFACTURING POLARIZING FILM

Provided are a method for manufacturing a polarizing film capable of manufacturing a polarizing film with a good optical performance and a device for manufacturing a polarizing film. The method for manufacturing the polarizing film that manufactures the polarizing film with a polyvinyl alcohol-based...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEUCHI TOMOYASU, MUTO KIYOSHI, SUMIDA KOJI
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Provided are a method for manufacturing a polarizing film capable of manufacturing a polarizing film with a good optical performance and a device for manufacturing a polarizing film. The method for manufacturing the polarizing film that manufactures the polarizing film with a polyvinyl alcohol-based resin film comprises: a process of treating the polyvinyl alcohol-based resin film with a dyeing solution containing iodine; a process of adding water having an oxygen dissolved amount of 2.0 mg/L or less to a liquid containing a crosslinking agent and an iodide salt to obtain a first crosslinking treatment liquid; and a process of immersing a polyvinyl alcohol-based resin film after the process of treating with the dyeing solution in the treatment liquid for crosslinking containing the first crosslinking treatment liquid. [과제] 광학 성능이 양호한 편광 필름을 제조할 수 있는 편광 필름의 제조 방법 및 편광 필름의 제조 장치를 제공한다. [해결수단] 폴리비닐알코올계 수지 필름으로 편광 필름을 제조하는 편광 필름의 제조 방법은, 폴리비닐알코올계 수지 필름을, 요오드를 함유하는 염색 처리액으로 처리하는 공정과, 가교제 및 요오드화물염을 함유하는 액에, 산소 용존량이 2.0 ㎎/L 이하인 물을 첨가하여 제1 가교 처리액을 얻는 공정과, 제1 가교 처리액을 포함하는 가교 처리액에, 염색 처리액으로 처리하는 공정 후의 폴리비닐알코올계 수지 필름을 침지하는 공정을 포함한다.