Molded paper body with minimal wrinkling and forming method thereof

A method of producing a molded paper body, comprising:

• deep drawing a sheet of blank comprising paper, with a punch and a die, holding an outer peripheral portion of the blank by pressing with a wrinkle pressing member and an upper surface of the die to thereby form the molded paper body, wherein the molded paper body has a top surface and a sidewall, wherein the pressing with the wrinkle pressing member is performed such that (i) wrinkles are not formed in the molded paper body in an area of the sidewall from the top surface to a position which is 3 mm from the top surface, and (ii) a proportion of the pressing force applied by the wrinkle pressing member in an initial processing stage to the tensile strength of the blank is 2% to 12%, wherein an end of the die which is nearest to the punch has a rounded shape, with a radius of curvature R being 2.5 t to 6 t, where t is the thickness of the blank.