Water-repellent filter, a method of manufacturing a water-repellent filter member, and gas sensor

A water-repellent filter member formed from a resin sheet of a porous, fibrous structure having air permeability and water repellency; a waterproof instrument and gas sensor having air permeability; and a method of manufacturing the same. A water-repellent filter member (19) is formed from a resin s...

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Bibliographische Detailangaben
Hauptverfasser: ASAI MASAHIRO, HISHIKI MAKOTO, YAMADA YUICHI, NISHIO HISAHARU
Format: Patent
Sprache:eng
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Zusammenfassung:A water-repellent filter member formed from a resin sheet of a porous, fibrous structure having air permeability and water repellency; a waterproof instrument and gas sensor having air permeability; and a method of manufacturing the same. A water-repellent filter member (19) is formed from a resin sheet (54) of a porous, fibrous structure having air permeability and water repellency by subjecting the resin sheet to forming work, and includes an axially extending tubular side wall portion (19s) and a bottom wall portion closing one end of the tubular side wall portion. At least a portion of the bottom wall portion (19t) retains the porous, fibrous structure of the resin sheet and thereby has air permeability.