Sheet manufacturing apparatus
An apparatus includes: a defibrating unit that defibrates a material to turn it into fibers; a fiber piling-up unit that piles up the fibers to form a second web; a pressing portion that presses the second web to turn it into a sheet; and a humidifying mechanism that supplies humidified air to the fiber piling-up unit. The fiber piling-up unit includes a rotating portion that stirs the fibers supplied from the defibrating unit, a case in which the rotating portion is housed, and a mesh belt that is provided under the case and transports the second web in a transportation direction. The second web is formed on the mesh belt by piling up the fibers on the mesh belt. The humidifying mechanism includes an upstream-side nozzle that is provided upstream of the fiber piling-up unit in the transportation direction and supplies the humidified air to the fiber piling-up unit.
1 . A sheet manufacturing apparatus comprising:
a defibrating unit that defibrates a material to turn the material into fibers;
a fiber piling-up unit that piles up the fibers to form a web;
a pressing unit that presses the web to turn the web into a sheet; and
a humidifying mechanism that supplies humidified air to the fiber piling-up unit, wherein
the fiber piling-up unit includes
a rotating portion that stirs the fibers supplied from the defibrating unit,
a case in which the rotating portion is housed, and
a transportation belt that is provided under the case and transports the web in a transportation direction,
the web is formed on the transportation belt by piling up the fibers on the transportation belt, and
the humidifying mechanism includes a nozzle that is provided upstream of the fiber piling-up unit in the transportation direction and supplies the humidified air to the fiber piling-up unit,
the nozzle is disposed adjacent to a sidewall of the case upstream of the case in the transportation direction,
the nozzle includes an opening portion having a rectangular shape, and
a length of the opening portion in the transportation direction is less than a length of the opening portion in a direction intersecting with the transportation direction.
2 . The sheet manufacturing apparatus according to claim 1 , wherein
the opening portion is disposed adjacent to a lower end of the case in such a way as to face the transportation belt.
3 . The sheet manufacturing apparatus according to claim 1 , wherein
a canopy is provided at a lower end of the case in such a way as to face the opening portion of the nozzle.