| 摘要 |
The present invention provides a long-length multilayer film including a long-length optical film and a long-length protective, film that is releasable from the long-length optical film, wherein a three-dimensional center-line average roughness R1 of a surface of the optical film opposite to a surface on a side of the protective film, a three-dimensional center-line average roughness R2 of a surface of the protective film opposite to a surface on a side of the optical film, a tensile elastic modulus M1 in a lengthwise direction of the optical film, and a tensile elastic modulus M2 in a lengthwise direction of the protective film satisfy predetermined relationships: and a wound body of the multilayer film. |
| 主权项 |
1. A long-length multilayer film comprising a long-length optical film and a long-length protective film that is releasable from the long-length optical film, wherein
a three-dimensional center-line average roughness R1 of a surface of the optical film opposite to a surface on a side of the protective film, a three-dimensional center-line average roughness R2 of a surface of the protective film opposite to a surface on a side of the optical film, a tensile elastic modulus M1 in a lengthwise direction of the optical film, and a tensile elastic modulus M2 in a lengthwise direction of the protective film satisfy relationships of the following formulae (1) to (6):
0.01 μm≦R1≦0.05 μm (1),0.01 μm≦R2≦0.2 μm (2),1,500 MPa≦M1≦3,000 MPa (3),2,500 MPa≦M2≦6,000 MPa (4),1.0≦R2/R1≦5.0 (5), and1.0≦M2/M1≦3.0 (6). |
