| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic winding type filter device for coarse dust removal which is arranged at the outdoor air intake of the filter system of a clean room or the like and generates outgas less. SOLUTION: The automatic winding type filter device comprises: a filter medium for an air filter for the coarse dust removal; an unwinding part for unwinding the filter medium for the air filter wound in a roll shape; a winding part for automatically winding the filter medium for the air filter after dust collection; and a main body case for housing them. To at least on the inner side of the main body case, a surface treatment by an inorganic material is applied. COPYRIGHT: (C)2003,JPO
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