Title:
FIBERS FOR SOUND ABSORBING/INSULATING MATERIAL, USE OF SAID FIBERS, MANUFACTURING METHOD FOR FIBERS FOR SOUND ABSORBING/INSULATING MATERIAL, AND FIBER-MOLDED PRODUCT FOR SOUND ABSORBING/INSULATING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2018/021319
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing fibers of 0.01-0.5 dtex which are used for a sound absorbing/insulating material and with which a fiber assembly with excellent sound absorbing/insulating effects can be obtained. The present invention also addresses the problem of providing a fiber-molded product for sound absorbing/insulating material in which said fibers are used, the product being suitable for a sound absorbing effect of sound less than or equal to 1,000 Hz. The problem can be solved by, in the fiber-molded product described below having a single-fiber fineness of 0.01-0.5 dtex, providing fibers for sound absorbing/insulating material in which the average value of the normal incidence sound absorption coefficient of the fiber-molded product for sound having a frequency of 200-1,000 Hz is 40% or more, and by using the fibers for sound absorbing/insulating material to mold the fiber-molded product for sound absorbing/insulating material. (Fiber-molded product) 70 mass% of fibers for sound absorbing/insulating material having a fiber length of 40 mm, and 30 mass% of polyester thermally fusible fibers having a single-fiber fineness of 2.2 dtex, a fiber length of 51 mm, and a melting point of 110°C are mixed; heated for 20 minutes at 170°C; and then cooled to form a fiber-molded product having a thickness of 30 mm and a basis weight of 1,200 g/m2.
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Inventors:
INAGAKI TATSUHIKO (JP)
Application Number:
PCT/JP2017/026884
Publication Date:
February 01, 2018
Filing Date:
July 25, 2017
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
G10K11/162; B60R13/08; D01F6/38
Foreign References:
| JP2016034828A | 2016-03-17 | |||
| JPH11222717A | 1999-08-17 | |||
| JP2008095255A | 2008-04-24 | |||
| JP2012112072A | 2012-06-14 | |||
| JP2010085873A | 2010-04-15 | |||
| JP2006526081A | 2006-11-16 | |||
| JP2004354844A | 2004-12-16 |
Other References:
See also references of EP 3493199A4
Attorney, Agent or Firm:
KOBAYASHI, Hitoshi et al. (JP)
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