OPTICAL FILM MANUFACTURING METHOD

• Main Authors: SUZUKI NOBORU, OKAMOTO KEIICHI
• Format: Patent
• Language: English; Japanese
• Published: 04.03.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PACKING; PERFORMING OPERATIONS; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide an optical film virtually free of defects due to the incorrect alignment of a liquid crystal layer.SOLUTION: A laminate (8) having a protective film (2) peelably adhered to the first principal surface of a long film base material (1) is conveyed by rolls to a peeling unit (10) along the longitudinal direction and the protective film is peeled off from the first principal surface of the film base material at the peeling unit. While the film base material after the protective film is peeled off is conveyed from the peeling unit to a coating unit (30), rolls do not contact the widthwise middle part of the first principal surface of the film base material and a film presser mechanism (15) contacts both widthwise edges of the first principal surface of the film base material at least once. The film presser mechanism does not contact the widthwise middle part of the first principal surface of the film base material.SELECTED DRAWING: Figure 3 【課題】液晶層の配向不良による欠陥が少ない光学フィルムを提供する。【解決手段】長尺のフィルム基材（１）の第一主面上に保護フィルム（２）が剥離可能に貼着された積層体（８）を、長手方向に沿って剥離部（１０）までロール搬送し、剥離部において、フィルム基材の第一主面から保護フィルムを剥離する。保護フィルムを剥離後の前記フィルム基材を、剥離部から塗布部（３０）まで搬送する間に、フィルム基材の第一主面の幅方向の中央部にはロールが接触せず、フィルム基材の第一主面の幅方向の両端部に、少なくとも１回はフィルム押さえ機構（１５）が接触する。フィルム押さえ機構は、フィルム基材の第一主面の幅方向の中央部には接触しない。【選択図】図３