| abstract |
(57) [PROBLEMS] To provide a polycarbonate resin extruded foam excellent in moisture permeability and air permeability, and also excellent in appearance, heat resistance, and rigidity, which is particularly suitable as a lining material for construction. A thickness of 0.5 to 10 mm and a density of 0.03 to A foam having a closed cell ratio of 0.6 g / cm 3 and a closed cell ratio of 5% or more and less than 80%, and having a cell structure in which a broken line portion is formed in a part of the cell skeleton cut in the foam section ( That is, Polycarbonate resin extruded foam, characterized in that it has pores in the cell membrane. |