DEFIBRATED MATERIAL MANUFACTURING DEVICE， AND SHEET MANUFACTURING APPARATUS

Provided is a defibrated material manufacturing device suitable for use with a sheet manufacturing apparatus that manufactures new paper. A defibrated material manufacturing device configured to process a feedstock of coarse product D， which is clumps of shreds P containing fiber， and defibrate the clumps of shreds P into defibrated material， has: a removal device 130 configured to remove at least part of metallic foreign matter M and shreds P2 containing metallic foreign matter M from the shreds P; a load cell 142 configured to weigh shreds P1 that passed the removal device 130 and do not contain metallic foreign matter M; a storage device 141 that stores the shreds P1 not containing metallic foreign matter M weighed by the load cell 142; and a defibrator 160 that defibrates into defibrated material the weighed shreds P1 supplied from the storage device 141 and not containing metallic foreign matter M.