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    ROLL OF CONTINUOUS WEB OF OPTICAL FILM LAMINATE AND PRODUCTION METHOD THEREFOR
    3.
    发明申请
    ROLL OF CONTINUOUS WEB OF OPTICAL FILM LAMINATE AND PRODUCTION METHOD THEREFOR 有权
    光学薄膜连续网卷及其生产方法

    公开(公告)号：US20160054494A1

    公开(公告)日：2016-02-25

    申请号：US14918186

    申请日：2015-10-20

    Applicant: NITTO DENKO CORPORATION

    Inventor： Takeharu KITAGAWA ,  Takuya Nakazono ,  Shusaku Goto ,  Minoru Miyatake ,  Tomohiro Mori ,  Takashi Kamijo

    IPC: G02B5/30 ,  G02B27/28 ,  G02B1/08

    CPC classification number: G02B5/305 ,  G02B1/08 ,  G02B5/3033 ,  G02B27/288 ,  Y10T428/1041 ,  Y10T428/14 ,  Y10T428/15

    Abstract: A method of producing a roll of a continuous web of an optical film laminate, usable in a process of laminating an optical film sheet including a polarizing film and formed to a size corresponding to that an optical panel to a surface of the optical panel being fed to a lamination position, is disclosed. The polarizing film is prepared by subjecting a laminate including a thermoplastic resin substrate and a PVA type resin layer formed on the substrate, to uniaxial 2-stage stretching to reduce a thickness of the PVA type resin layer to 10 μm or less, and causing a dichroic material to be absorbed in the PVA type resin layer. A carrier film is releasably attached to the continuous web of optical film laminate including the polarizing film, through an adhesive layer. A defect inspection is performed for the optical film laminate and the adhesive layer.

    Abstract translation: 一种制造光学膜层叠体的连续卷筒纸的方法，可用于将包括偏振膜的光学膜片层压并且形成为与所述光学板相对应的尺寸的光学膜片的工艺，以提供给被馈送的光学板的表面 公开了层压位置。 通过对形成在基板上的热塑性树脂基板和PVA型树脂层的层叠体进行单轴2级拉伸，将PVA类树脂层的厚度缩小到10μm以下，制作偏光膜， 二色性材料被吸收在PVA型树脂层中。 载体膜通过粘合剂层可释放地附着到包括偏振膜的光学膜层压板的连续幅材上。 对光学膜层叠体和粘合剂层进行缺陷检查。

    Method of producing roll of laminate strip with polarizing film
    4.
    发明授权
    Method of producing roll of laminate strip with polarizing film 有权

    公开(公告)号：US09618668B2

    公开(公告)日：2017-04-11

    申请号：US13728473

    申请日：2012-12-27

    Applicant: NITTO DENKO CORPORATION

    Inventor： Takeharu Kitagawa ,  Takuya Nakazono ,  Shusaku Goto ,  Minoru Miyatake ,  Tomohiro Mori ,  Takashi Kamijo

    IPC: G02B5/30 ,  B32B41/00

    CPC classification number: G02B5/305 ,  B32B41/00 ,  B32B2457/20 ,  G02B5/3033

    Abstract: A method of producing a roll of an optical film laminate strip including a polarizing film includes the steps of: forming a continuous web of optical film laminate including a polarizing film which consists of a polyvinyl alcohol type resin layer and has a thickness of 10 μm or less, wherein the polarizing film is formed by performing an stretching sub-step of subjecting a laminate comprising a continuous web of thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate, to a uniaxial stretching in a lengthwise direction of the laminate based on 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching; cutting the continuous web of optical film laminate along a direction parallel to the length direction to form at least one continuous web of laminate strip having a given width; and winding the continuous web of laminate strip having the given width into a roll.

    Method for producing polarizer
    7.
    发明授权
    Method for producing polarizer 有权
    偏振片的制造方法

    公开(公告)号：US09329307B2

    公开(公告)日：2016-05-03

    申请号：US13933055

    申请日：2013-07-01

    Applicant: NITTO DENKO CORPORATION

    Inventor： Hiroaki Sawada ,  Takeharu Kitagawa ,  Takashi Kamijo

    IPC: G02B1/08 ,  C08J5/18 ,  C08J7/04 ,  G02B5/30

    CPC classification number: G02B1/08 ,  B32B2457/202 ,  C08J5/18 ,  C08J7/04 ,  C08J2385/04 ,  C08J2429/04 ,  G02B5/3033 ,  Y10T428/265

    Abstract: A method for producing a polarizer (20) comprises the steps of: (A) stretching a polyvinyl alcohol-based resin layer (10) to obtain a stretched layer (14); (B) immersing the stretched layer (14) in a dyeing liquid (23) containing iodine to obtain a dyed layer (18) in which absorbance thereof determined from a tristimulus value Y is from 0.4 to 1.0 (transmittance T=40% to 10%); and (C) removing a part of iodine adsorbed in the dyed layer (18) so that the absorbance of the dyed layer (18) decreases by 0.03 to 0.7, provided that the absorbance of the dyed layer (18) is controlled so that it does not become less than 0.3.

    Abstract translation: 一种偏光镜（20）的制造方法，其特征在于，包括以下工序：（A）拉伸聚乙烯醇类树脂层（10），得到拉伸层（14）。 （B）将拉伸层（14）浸渍在含有碘的染色液（23）中，得到由三色刺激值Y求出的吸光度为0.4〜1.0的透明层（18），透光率T = 40〜10 ％）; 以及（C）除去吸附在染色层（18）中的一部分碘，使得染色层（18）的吸光度减少0.03至0.7，只要染色层（18）的吸光度被控制，使得 不会小于0.3。

    METHOD FOR PRODUCING POLARIZER
    9.
    发明申请
    METHOD FOR PRODUCING POLARIZER 审中-公开
    生产极化剂的方法

    公开(公告)号：US20160025910A1

    公开(公告)日：2016-01-28

    申请号：US14874028

    申请日：2015-10-02

    Applicant: NITTO DENKO CORPORATION

    Inventor： Hiroaki SAWADA ,  Takeharu Kitagawa ,  Takashi Kamijo

    IPC: G02B5/30

    CPC classification number: G02B5/3033 ,  B32B27/08 ,  B32B27/32 ,  B32B27/325 ,  B32B27/34 ,  B32B27/36 ,  B32B27/365 ,  B32B2250/24 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/21 ,  B32B2307/40 ,  B32B2307/4026 ,  B32B2307/412 ,  B32B2307/416 ,  B32B2307/42 ,  B32B2307/514 ,  B32B2457/20

    Abstract: A method for producing a polarizer comprises the steps of: (A) forming a polyvinyl alcohol-based resin layer on a support made of an optically transparent thermoplastic resin; (B) stretching a polyvinyl alcohol-based resin layer together with the support to obtain a stretched layer; (C) immersing the stretched layer in a dyeing liquid containing iodine to obtain a dyed layer in which absorbance thereof determined from a tristimulus value Y is from 0.4 to 1.0 (transmittance T=40% to 10%); and (D) removing a part of iodine adsorbed in the dyed layer so that the absorbance of the dyed layer decreases by 0.03 to 0.7, provided that the absorbance of the dyed layer is controlled so that it does not become less than 0.3. The support may be used as an optical film laminated to the polarizer.

    Abstract translation: 偏振片的制造方法包括以下步骤：（A）在由光学透明的热塑性树脂制成的支持体上形成聚乙烯醇类树脂层; （B）与支持体一起拉伸聚乙烯醇系树脂层，得到拉伸层; （C）将拉伸层浸渍在含碘染色液中，得到由三刺激值Y确定的吸光度为0.4〜1.0（透光率T = 40％〜10％）的染色层。 和（D）除去吸附在染色层中的一部分碘，使得染色层的吸光度降低0.03至0.7，条件是染色层的吸光度被控制为不变得小于0.3。 支撑体可以用作层叠到偏振器的光学膜。

    METHOD FOR PRODUCING POLARIZING FILM
    10.
    发明申请
    METHOD FOR PRODUCING POLARIZING FILM 审中-公开
    生产极化膜的方法

    公开(公告)号：US20150369964A1

    公开(公告)日：2015-12-24

    申请号：US14767345

    申请日：2014-02-06

    Applicant: NITTO DENKO CORPORATION

    Inventor： Tomohiro Mori ,  Takashi Kamijo ,  Minoru Miyatake

    IPC: G02B1/10 ,  G02B5/30

    CPC classification number: G02B1/10 ,  B29C55/023 ,  B29C55/14 ,  G02B5/3033 ,  G02B5/305 ,  Y10T428/31797

    Abstract: Provided is a manufacturing method for a polarizing film having excellent manufacturing efficiency while maintaining optical characteristics. A manufacturing method for a polarizing film of the present invention includes in this order, the steps of: stretching a resin substrate in a first direction; heating the resin substrate; forming a polyvinyl alcohol-based resin layer on the resin substrate, to thereby produce a laminate; and stretching the laminate in a second direction.

    Abstract translation: 提供一种在保持光学特性的同时具有优异的制造效率的偏振膜的制造方法。 本发明的偏振膜的制造方法依次包括以下步骤：在第一方向上拉伸树脂基板; 加热树脂基板; 在树脂基板上形成聚乙烯醇类树脂层，由此制造层压体; 以及沿第二方向拉伸所述层压体。

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