INSERTING MATERIAL OF GAS FEEDING DUCT AND GAS FEEDING DUCT

摘要

PROBLEM TO BE SOLVED: To provider an inserting material which can be easily inserted for noise reduction or dust removing of a gas feeding duct such as a duct for air conditioning facilities or an intake duct of a vehicle engine and the gas feeding duct to which the inserting material is inserted and attached.

SOLUTION: The inserting material 1 comprises a laminated material including one or more of layers of paper materials 2 subjected to crape machining and/or emboss machining and one or more of porous materials 3 being air permeable porous sheets and is used by being inserted and attached to the inner peripheries of predetermined positions of a duct body.

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