DUCT AND METHOD FOR MANUFACTURING SAME

Title:

DUCT AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2014/168120

Kind Code:

A1

Abstract:

Provided is a duct in which defective molding does not occur, the sound absorption performance of the inner surface of the duct is excellent, and generation of noise can be effectively suppressed. The present invention provides a duct provided with a cylindrical main duct body and a sound absorption material disposed on the inner surface side of the main duct body, wherein the duct is provided with at least one of the following configurations (1) to (3). (1)　The main duct body is provided with a sandwiching part provided with a pair of wall surfaces facing each other, the side edge parts of the sound absorption material being sandwiched from the sides of both surfaces by the wall surfaces of the sandwiching part. (2) The sound absorption material is adhered to the inner surface of the main duct body with a resin film interposed therebetween. (3) The sound absorption material and the main duct body have portions that are not fused to each other.

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Inventors:

IWASAKI KENJI (JP)
TAMADA TERUO (JP)

Application Number:

PCT/JP2014/060109

Publication Date:

October 16, 2014

Filing Date:

April 07, 2014

Export Citation:

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Assignee:

KYORAKU CO LTD (JP)

International Classes:

F24F13/02; B60H1/00; B60K13/02

Foreign References:

JP2006248344A	2006-09-21
JP2003306025A	2003-10-28
JP2000171085A	2000-06-23
JP2003104045A	2003-04-09
JPH06219144A	1994-08-09
JPS5746010U	1982-03-13
JP2007038420A	2007-02-15
JP2010145003A	2010-07-01
JP2009269219A	2009-11-19
JP2003042389A	2003-02-13
JPH06272948A	1994-09-27
JP2001180250A	2001-07-03
JPS60188618U	1985-12-13

Other References: