公开(公告)号：EP4282906A1

公开(公告)日：2023-11-29

申请号：EP22742646.7

申请日：2022-01-20

申请人： Daikin Industries, Ltd.

发明人： KOMORI, Hirokazu ,  HIGUCHI, Tatsuya ,  TAKAHASHI, Kenzo ,  KAWAMURA, Masahiko ,  YOKOTANI, Koji ,  TERADA, Junpei ,  KOMATSU, Nobuyuki

IPC分类号： C08J5/18 ,  B32B15/01 ,  B32B15/08 ,  B32B15/082 ,  H05K1/03 ,  C08J7/00

摘要： Provided are a fluororesin film with few defects in lamination and highly adhesive to copper foil, and a copper-clad laminate using the same. A fluororesin film that is a film including a fluorine-containing composition, wherein the oxygen element percentage as measured when heat treatment is performed at 180°C for 3 minutes and then the state of one or both surfaces of the film is observed by scanning X-ray photoelectron spectroscopy (XPS/ESCA) is 1.35 atom% or more, and an absolute value of the rate of dimensional change in MD and TD before and after heat treatment as measured when the film is heat-treated at 180°C for 10 minutes and then cooled to room temperature is 2% or less.