Web forming device and sheet manufacturing apparatus

A web forming device comprising:

• a mesh body that has a deposition surface on which a mixture including a defibrated object and a resin is deposited as a web and that transports the deposited web;
• a housing portion located on a back surface side of the deposition surface of the mesh body and defining a suction region;
• and
• a suction portion that sucks air in the housing portion, wherein
• the housing portion includes
• a first inclined surface and a second inclined surface inclined such that a distance between the first inclined surface and the second inclined surface decreases downward in a vertical direction and arranged to face each other,
• a third inclined surface that is located between the first inclined surface and the second inclined surface, that faces the first inclined surface, that is inclined such that a distance between the third inclined surface and the first inclined surface decreases downward in the vertical direction, and that has a first gap with respect to the first inclined surface, and
• a fourth inclined surface that is located between the first inclined surface and the second inclined surface, that faces the second inclined surface, that is inclined such that a distance between the fourth inclined surface and the second inclined surface decreases downward in the vertical direction, and that has a second gap with respect to the second inclined surface, and
• the suction portion causes the mixture which passed through a mesh of the mesh body to pass through the first gap and the second gap and collects the mixture.