Patent ID: 11891722
Assignee: SEIKO EPSON CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC D  B  Y | IPC B  D

Claim 0:
1. A fiber structure manufacturing apparatus, comprising:
a dry defibrator that pulverizes and defibrates a raw material that contains fibers;
a transportation unit that transports a defibrated material after defibration by the dry defibrator;
a material supply unit that supplies a material to the transportation unit;
a fiber structure forming unit that forms a fiber structure from the defibrated material transported by the transportation unit, wherein
the material supply unit includes
a case that includes a material putting-in portion through which a fluff material is put in and a material putting-out portion through which the fluff material is put out below the material putting-in portion; and
a screw that includes a rotational shaft and a blade portion, the rotational shaft being provided rotatably inside the case, the blade portion being spirally mounted on the rotational shaft; wherein

the screw is rotated with repeated alternation of a slope-down direction in which the blade portion slopes downward spirally in a vertical direction and a slope-up direction in which the blade portion slopes upward spirally in the vertical direction.