公开(公告)号：US20160052216A1

公开(公告)日：2016-02-25

申请号：US14780717

申请日：2014-03-12

Applicant: NITTO DENKO CORPORATION

Inventor： Takashi SHIMIZU ,  Satoshi HIRATA ,  Seiji KONDO ,  Nao MURAKAMI

IPC: B29D11/00

CPC classification number: B29D11/00644 ,  B29C55/045 ,  B29D11/00788 ,  B29K2069/00 ,  B29K2995/0018 ,  G02B5/3033 ,  G02B5/3083 ,  G02F2001/133638

Abstract: Provided is a method by which a retardation film suppressed in biaxiality, having a small Nz coefficient, and having a slow axis in an oblique direction can be produced with high production efficiency. The production method for a retardation film of the present invention includes: holding left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; reducing, under a state in which the clip pitch of the clips on one side out of the left and right clips is kept constant, the clip pitch of the clips on another side to obliquely stretch the film; and releasing the film from being held with the clips.

Abstract translation: 提供一种以高生产率生产双轴抑制的具有小的Nz系数并且具有沿倾斜方向的慢轴的相位差薄膜的方法。 本发明的延迟膜的制造方法包括：保持膜的左右端部，其左右可变节距型夹具被构造成分别在纵向方向上具有夹紧间距变化; 预热胶片; 在左侧和右侧夹子之间的一侧上的夹子的夹子间距保持不变的状态下，另一侧的夹子的夹子间距倾斜地拉伸; 并释放胶片不被夹子夹住。

公开(公告)号：US20160052215A1

公开(公告)日：2016-02-25

申请号：US14780673

申请日：2014-03-12

Applicant: NITTO DENKO CORPORATION

Inventor： Takashi SHIMIZU ,  Satoshi HIRATA ,  Seiji KONDA ,  Nao MURAKAMI

IPC: B29D11/00 ,  B29C55/04

CPC classification number: B29D11/00644 ,  B29C55/045 ,  B29C55/16 ,  B29C55/20 ,  B29K2069/00 ,  B29L2011/0066 ,  G02B5/30 ,  G02B5/3083

Abstract: The present invention provides a method capable of producing a retardation film having an elongated shape, having high uniaxiality and a high in-plane alignment property, and having a slow axis in an oblique direction with high production efficiency. The production method for a retardation film of the present invention includes: holding left and right end portions of a film with left and right variable pitch-type clips configured to have clip pitches changing in a longitudinal direction, respectively; preheating the film; increasing the clip pitch of the clips on one side and reducing the clip pitch of the clips on another side, while extending a distance between the left and right clips, to obliquely stretch the film; maintaining or reducing the clip pitch of the clips on the one side and increasing the clip pitch of the clips on the another side so that the clip pitches of the left and right clips are equal to each other, while extending the distance between the left and right clips, to obliquely stretch the film; and releasing the film from being held with the clips.

Abstract translation: 本发明提供一种能够制造具有高单轴性和高面内取向性的细长形状的延迟膜，并且具有生产效率高的倾斜方向的慢轴的方法。 本发明的延迟膜的制造方法包括：保持膜的左右端部，其左右可变节距型夹具被构造成分别在纵向方向上具有夹紧间距变化; 预热胶片; 在一侧增加夹子的夹子间距并且在另一侧减小夹子的夹子间距，同时延伸左和右夹子之间的距离，以使薄膜倾斜地拉伸; 保持或减小夹子在一侧的夹子间距，并增加另一侧的夹子的夹子间距，使得左和右夹子的夹子间距彼此相等，同时延伸左侧与 右剪，斜拉伸影片; 并释放胶片不被夹子夹住。

公开(公告)号：US20250034023A1

公开(公告)日：2025-01-30

申请号：US18717242

申请日：2022-10-28

Applicant: NITTO DENKO CORPORATION

Inventor： Takanobu YANO ,  Takuya MORI ,  Toshihiro KANNO ,  Satoshi HIRATA

IPC: C03B33/09 ,  B23K26/364 ,  C03B33/033 ,  C03B33/037

Abstract: An objective of the present invention is to provide a brittle material chip and the like having excellent flexibility. The present invention is a brittle material chip including a brittle material layer formed of a brittle material. The brittle material chip includes first processed marks formed on one side in a thickness direction of the brittle material layer on at least one end surface of the brittle material layer and having depths of 1 μm or more and less than half the thickness of the brittle material layer and includes or does not include second processed marks formed on the other side in the thickness direction on the end surface of the brittle material layer, facing the first processed marks in the thickness direction, and having depths of less than 1 μm.