Patent ID: 8821148

Claim:
A sheet forming apparatus for discharging a slurry into a sheet shape to produce a green sheet in combination with a doctor blade, comprising: a supply port configured to supply the slurry; a discharge port configured to discharge the green sheet; a plurality of slurry spreading chambers configured to spread the slurry in a transverse direction of the green sheet which extends across a direction along which the green sheet is transported, the slurry spreading chambers being disposed between the supply port and the discharge port and arranged downstream along a direction in which the slurry flows from the supply port to the discharge port; and a plurality of joining holes through which adjacent ones of the slurry spreading chambers are joined to each other; wherein the joining holes include at least two joining holes, with one joining hole disposed on each side of the supply port along the transverse direction, wherein the joining holes include a plurality of sets of joining holes, each set of joining holes joining one of the plurality of slurry spreading chambers to an adjacent one of the plurality of slurry spreading chambers, wherein each of the plurality of sets of joining holes includes at least one joining hole, and wherein each of the joining holes provides a fluid passage having a cross-sectional area, and a sum of cross-sectional areas of each set of joining holes is smaller than a sum of cross-sectional areas of each other set of joining holes disposed upstream therefrom along the direction in which the slurry flows from the supply port to the discharge port.