公开(公告)号：US10112369B2

公开(公告)日：2018-10-30

申请号：US15022889

申请日：2014-07-04

Applicant: RIKEN TECHNOS CORPORATION

Inventor： Kohei Nakashima ,  Shintaro Negimoto

IPC: B32B27/08 ,  B32B27/16 ,  B32B27/30 ,  B32B27/36 ,  B32B37/15 ,  B29C47/00 ,  B29C47/06 ,  B29C47/14 ,  B29C47/92 ,  B29K69/00 ,  B29K79/00 ,  B29L9/00

Abstract: Embodiments of the invention provide a transparent poly(meth)acrylimide-based resin multilayer film exhibiting excellent surface smoothness, transparency, outer appearance, and resistance to puchability. According to at least one embodiment, there is provided a method for producing said transparent multilayer film, in which the transparent multilayer film in which a first poly(meth)acrylimide-based resin layer (α1), an aromatic polycarbonate-based resin layer (β), and a second poly(meth)acrylimide-based resin layer (α2) are directly laminated in said order, and in that the total light transmittance exceeds 90% and the haze is 2.0% or lower. The transparent multilayer film is produced by continuously coextruding, from a T die, a molten film of the transparent multilayer film in which the aforementioned layers were directly laminated in the aforementioned order, and by supplying and then pressing the molten film between a first mirror body that has a surface temperature between 100 and 200° C. and a second mirror body that has a surface temperature between 20 and 200° C.