BASE MATERIAL LAMINATE BODY, OPTICAL LAMINATE BODY, METHOD FOR MANUFACTURING BASE MATERIAL LAMINATE BODY, AND METHOD FOR MANUFACTURING POLARIZER

• Main Author: FUJII KANJI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2023
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; TRANSPORTING

To provide a base material laminate body in which an end piece of an optical laminate body manufactured in the step of manufacturing a polarizer can be easily removed.SOLUTION: A base material laminate body A includes a base material layer 2 and a surface processing layer 3 directly laminated on the surface of the base material layer 2. The base material laminate body A includes a pair of end parts AE facing each other in a direction substantially parallel to the surface of the base material layer 2 and a center part AC between the pair of end parts AE. The strength of separation of the base material layer 2 from the surface processing layer 3 in at least one of the end parts AE of the base material laminate body A is denoted by Ie. The strength of separation of the base material layer 2 from the surface processing layer 3 in the center part AC of the base material laminate body A is denoted by Ic. Ie is larger than Ic.SELECTED DRAWING: Figure 1 【課題】偏光板の製造過程で作製される光学積層体の端部片を容易に除去することができる基材積層体の提供。【解決手段】基材積層体Ａは、基材層２と、基材層２の表面に直接積層された表面処理層３と、を備える。基材積層体Ａは、基材層２の表面に略平行な方向において対向する一対の端部ＡＥと、一対の端部ＡＥの間に位置する中央部ＡＣと、を含む。基材積層体Ａの少なくとも一方の端部ＡＥにおける表面処理層３に対する基材層２の剥離強度は、Ｉｅと表される。基材積層体Ａの中央部ＡＣにおける表面処理層３に対する基材層２の剥離強度は、Ｉｃと表される。Ｉｅは、Ｉｃよりも高い。【選択図】図１