Wet cellulose fiber sheet and method for producing cellulose fiber molded body

A method for producing a molded body, comprising:

• preparing a slurry by mixing cellulosic pulp having an average fiber diameter of over 10 μm and 100 μm or smaller, and fine cellulose fibers having an average fiber diameter of 10 μm or smaller,
• shaping the slurry into a wet sheet by holding the slurry between two facing net sheets and applying pressure to the slurry to dewater, and
• applying heat and pressure to the wet sheet to obtain a molded body,
• wherein the wet sheet has a water content of 60 mass % or higher and a thickness of 0.5 mm or more and 10 mm or less,
• wherein a content of the fine cellulose fibers in the wet sheet (solid concentration) is 10 to 38 mass %, and
• wherein a rate of thickness change of the wet sheet determined by formula 1 is 0.4 or lower:
• Rate of thickness change=((Thickness of wet sheet after application of pressure at 100 kPa in thickness direction for 1 second)−(Thickness of wet sheet after application of pressure at 100 kPa in thickness direction for 5 seconds))/(Thickness of wet sheet after application of pressure at 100 kPa in thickness direction for 1 second) Formula 1.