EMBOSSED THERMOPLASTIC RESIN SHEET ENGRAVED ROLL ENGRAVED ROLL MANUFACTURING METHOD LAMINATED GLASS INTERLAYER AND LAMINATED GLASS

摘要

The present invention provides an embossed thermoplastic resin sheet that, when used as an interlayer film for laminated glass, improves the degassing properties during laminated glass production, suppresses optical distortion of the obtained laminated glass, and improves visibility, and the embossed thermoplastic resin sheet An object of the present invention is to provide an engraving roll used for manufacturing a thermoplastic resin sheet, a manufacturing method of the engraving roll, an interlayer film for laminated glass using the embossed thermoplastic resin sheet, and laminated glass. According to the present invention, an embossed thermoplastic resin sheet having a plurality of concave portions and a plurality of convex portions on at least one surface, wherein the concave portions have a continuous groove shape at the bottom, and the adjacent concave portions are parallel and regularly arranged in parallel. As the embossed thermoplastic resin sheet, the number of defects of the convex portions present on the surface of the thermoplastic resin sheet is 3 pieces/mm 2 or less.