THIN FILM SHEET FOR PRINTING CONSISTING OF THERMOPLASTIC RESIN AND INORGANIC SUBSTANCE POWDER AND METHOD FOR MANUFACTURING SUCH SHEET

The problem addressed by the invention lies in providing a method for producing an inorganic substance powder highly-oriented thin film sheet with which it is possible to produce a sheet of uniform thickness while preventing the generation of impurities， improving sheet surface properties， adjusting apparent specific gravity， and the like. The problem addressed by the invention lies in providing a method for producing an inorganic substance powder highly-oriented thin film sheet with which it is possible to produce a sheet of uniform thickness while preventing the generation of impurities， improving sheet surface properties， adjusting apparent specific gravity， and the like. The method for producing a thin film sheet comprises a step for preparing a predetermined inorganic substance powder， thermoplastic resin， and auxiliary agent， a step for exposing the starting materials mixed at a predetermined mixture ratio to high shear stress while kneading， a step for feeding the kneaded starting materials to a T die-type extrusion molding device and molding a sheet， and a step for adjusting the apparent gravity as desired by stretching under predetermined conditions.