Duct and method for manufacturing same
AssigneeKyoraku Co., Ltd.
InventorsKenji IWASAKI, Teruo TAMADA
Life of this patent
Estimating the term…
Abstract
Provided is a duct that does not cause defective molding and has a highly sound absorption inner surface which can effectively suppress noise. A duct includes a tubular duct main body and a sound absorption member disposed on the inner surface of the duct main body. The duct has at least one of configurations (1) to (3): (1) the duct main body has a sandwiching part having a pair of opposite wall surfaces, and a side edge of the sound absorption member is sandwiched between the wall surfaces of the sandwiching part; (2) the sound absorption member is pasted to the inner surface of the duct main body with a resin film therebetween; and (3) the sound absorption member and duct main body have parts which are not fused to each other.
Claims17
A duct comprising:
- a tubular duct main body;
- and
- a sound absorption member disposed on an inner surface of the duct main body, wherein
- the duct has at least one of configurations (1) to (3):
- (1) the duct main body comprises a sandwiching part having a pair of opposite wall surfaces, and a side edge of the sound absorption member are sandwiched between the wall surfaces of the sandwiching part;
- (2) the sound absorption member is pasted to the inner surface of the duct main body with a resin film therebetween;
- and
- (3) the sound absorption member and the duct main body have parts which are not fused to each other.
-14. (canceled)
A method for manufacturing a duct comprising a step of causing molds to suck and form a pair of molten resin sheets to be formed into a tubular duct main body, then disposing a sound absorption member on the resin sheets, and closing the molds, wherein
- the method has at least one of configurations (A) to (C):
- (A) the molds sandwich a side edge of the sound absorption member between the resin sheets;
- (B) the sound absorption member is disposed on the resin sheets with a resin film therebetween;
- and
- (C) the sound absorption member is pasted to the resin sheets.
-24. (canceled)
Dependencies are inferred from the claim text.