公开(公告)号：US20180093409A1

公开(公告)日：2018-04-05

申请号：US15559917

申请日：2016-03-14

申请人： ZEON CORPORATION

发明人： Takao KOBAYASHI

IPC分类号： B29C55/08 ,  B29C55/20 ,  B29C71/02 ,  C08J5/18 ,  G02B5/30

CPC分类号： B29C55/08 ,  B29C55/165 ,  B29C55/20 ,  B29C71/02 ,  B29C2071/022 ,  B29L2007/00 ,  B29L2011/00 ,  C08J5/18 ,  G02B5/3033 ,  G02B5/305

摘要： A method for manufacturing a stretched film, including stretching a long-length resin film in an oven by grippers while conveying the resin film to pass the resin film through the oven to manufacture a long-length stretched film having a slow axis within an average angle range of 10° or more and 80° or less with respect to a width direction thereof, wherein the oven has a stretching zone and a heat setting zone in this order from an upstream side, and the method includes the steps of: holding the both edges of the resin film by the grippers; stretching the resin film in the stretching zone; releasing the resin film from the grippers in the heat setting zone; and subjecting the resin film released from the grippers to a heat treatment at a temperature higher than Tg−10° C. and lower than Tg for 10 seconds or more in the heat setting zone.

公开(公告)号：US20190310726A1

公开(公告)日：2019-10-10

申请号：US16095749

申请日：2017-04-21

申请人： ZEON CORPORATION

发明人： Hiromasa HASHIMOTO ,  Kazuhiro OSATO ,  Takao KOBAYASHI

IPC分类号： G06F3/044 ,  G02F1/1333 ,  G02B5/30 ,  H01L27/32

摘要： A film sensor member for disposing on a visually recognizing side of a linear polarizer in an image display device including the linear polarizer, the member including a transparent electroconductive layer, a λ/4 plate, and a λ/2 plate in this order from the visually recognizing side, wherein the λ/4 plate is formed of a first thermoplastic resin containing an amorphous polymer having a glass transition temperature of 150° C. or higher or a crystallizable polymer having a melting point of 250° C. or higher, the λ/2 plate includes, in this order, a first outer layer formed of a second thermoplastic resin, an intermediate layer formed of a third thermoplastic resin containing an ultraviolet absorber, and a second outer layer formed of a fourth thermoplastic resin, and the λ/2 plate has an NZ factor of 1.1 to 3.0.

公开(公告)号：US20190243049A1

公开(公告)日：2019-08-08

申请号：US16342647

申请日：2017-10-27

申请人： ZEON CORPORATION

发明人： Takao KOBAYASHI ,  Shunsuke TAKAGI

IPC分类号： G02B5/30 ,  G02F1/1335 ,  B29D11/00

CPC分类号： G02B5/3083 ,  B29C55/14 ,  B29D11/00644 ,  B32B7/02 ,  G02B5/30 ,  G02F1/133528 ,  G02F2001/133541

摘要： A method for producing a broadband wavelength film including, in this order: a first step of preparing a layer (A) as a long-length obliquely stretched film; a second step of forming on the layer (A) a layer (B) of a resin having a negative intrinsic birefringence to obtain a multilayer film; and a third step of stretching the multilayer film in a stretching direction that forms an angle of 0°±20° with respect to a width direction of the multilayer film to obtain a long-length broadband wavelength film including a λ/2 layer and a λ/4 layer.

公开(公告)号：US20160318233A1

公开(公告)日：2016-11-03

申请号：US15035792

申请日：2014-11-13

申请人： ZEON CORPORATION

发明人： Takao KOBAYASHI

IPC分类号： B29C55/10 ,  G02F1/1335 ,  G02B5/30 ,  B29D11/00

CPC分类号： B29C55/10 ,  B29C55/065 ,  B29C55/14 ,  B29C55/16 ,  B29D11/00644 ,  B29D11/00788 ,  B29L2011/00 ,  G02B5/3025 ,  G02B5/3033 ,  G02F1/133528

摘要： The present invention provides a method for producing a stretched film, the method including: (a) a first step of stretching a long-length pre-stretch film in a diagonal direction at a stretch ratio B1 to obtain a long-length intermediate film; and after the first step, (b) a second step of performing free uniaxial stretching of the intermediate film in a flow direction at a stretch ratio B2 while continuously conveying the intermediate film to obtain a long-length stretched film, wherein the stretch ratios satisfy B1>B2.

摘要翻译： 本发明提供一种拉伸膜的制造方法，该方法包括：（a）在拉伸倍率B1下沿对角线方向拉伸长条状预拉伸膜的第一工序，得到长长的中间膜; 在第一步骤之后，（b）在连续输送中间膜的同时，以拉伸比B2进行流动方向的中间膜的自由单轴拉伸，得到长径比拉伸膜的第二工序，拉伸倍率满足 B1> B2。

公开(公告)号：US20190293852A1

公开(公告)日：2019-09-26

申请号：US16340688

申请日：2017-10-27

申请人： ZEON CORPORATION

发明人： Takao KOBAYASHI ,  Shunsuke TAKAGI

IPC分类号： G02B5/30 ,  B29D11/00 ,  B32B7/023 ,  B32B27/08

摘要： A method for producing a broadband wavelength film including, in this order: a first step of preparing a layer (A) as a long-length obliquely stretched film; a second step of forming on the layer (A) a layer (B) of a resin having a negative intrinsic birefringence to obtain a multilayer film; and a third step of stretching the multilayer film to obtain a long-length broadband wavelength film including a λ/2 layer and a λ/4 layer.

公开(公告)号：US20190064413A1

公开(公告)日：2019-02-28

申请号：US16086815

申请日：2017-03-27

申请人： ZEON CORPORATION

发明人： Takao KOBAYASHI

IPC分类号： G02B5/30 ,  G02F1/1335 ,  H01L51/50 ,  H05B33/02

摘要： A circularly polarizing plate for disposing in an image display device including an image display element is disposed on a visually recognizing side of the image display element and includes a linear polarizer and a broadband λ/4 plate in this order from a side of the image display element. The broadband λ/4 plate includes a λ/2 plate and a λ/4 plate in this order from a side of the linear polarizer. At least one of the λ/2 plate and the λ/4 plate is a multilayer body including a first outer layer, an intermediate layer containing an ultraviolet absorber, and a second outer layer in this order. The broadband λ/4 plate has a light transmittance of 1.0% or less at a wavelength of 380 nm. The broadband λ/4 plate has a light transmittance of 5.0% or less at a wavelength of 390 nm.