PURPOSE: To obtain a novel fiber sheet having both of coloring due to dye and coloring due to interference of light and observed so as to expose a part dyed by dye (pigment) by an angle of incident light.
CONSTITUTION: This method for producing a fiber sheet is characterized by forming a metal layer having a film thickness B (μm) of the formula 0.01≤B≤-(3.37×10-4)A+4.03×10-2 on at least one side of a base fabric having ground dyeing part or ground pattern part satisfying the formula 1≤A≤90 in L* value concentration A by a vacuum deposition method or a spattering method and further forming an organic three-dimensionally crosslinked thin film layer having 1.35-2.00 refractive index and 0.05-1μm thickness on the upper surface of the metal layer by a plasma polymerization method.
AKAGI TAKAO
YONEYAMA MASAYUKI