| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a deodorant-enclosed filter medium having a dust removing property, in detail, the deodorant-enclosed filter medium in which a deodorant is interposed between at least two electret filter medium sheets. <P>SOLUTION: This deodorant-enclosed filter medium is obtained by interposing the deodorant between an air-permeable base material (A) and another air-permeable base material and enclosing the deodorant with a thermoplastic adhesive, and characterized in that the material (A) is an electret filter medium consisting of a polybutene-1-based fiber, preferably, a sheath-core conjugated fiber of polypropylene and polybutene-1 and the material (B) is another electret filter medium. <P>COPYRIGHT: (C)2004,JPO</p> |
