| 摘要 |
The purpose of the present invention is to provide an interlayer film for a laminated glass, the interlayer film having minimal optical distortion despite having a multilayer structure of two or more layers, and a laminated glass which uses the interlayer film for a laminated glass. The present invention is an interlayer film for a laminated glass, the interlayer film having numerous fine recesses and numerous fine projections on at least one surface thereof, and two or more resin layers including a first surface layer and a second surface layer and containing a thermoplastic resin and a plasticizer being layered in the interlayer film, the interlayer film for a laminate glass wherein a resin layer (1) thereof having a thickness of 50 µm obtained by leaving the interlayer film for a laminate glass for three hours at a temperature of 23°C and a relative humidity of 30% or lower, cutting the interlayer film for a laminate glass in a horizontal direction using a microtome at a temperature of 23°C and a relative humidity of 30% or lower from the boundary between the first surface layer and a resin layer adjacent to the inside of the first surface layer to a position 80-90 µm toward the first surface layer, and then further cutting at a position 50 µm toward the second surface layer from the cut face has a surface roughness (Rz) of less than 2.5 µm measured by a method in accordance with JIS B-0601 (1994). |
