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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.

Inventors:
INAGAKI, Tatsuhiko (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
Application Number:
JP2017/026884
Publication Date:
February 01, 2018
Filing Date:
July 25, 2017
Export Citation:
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Assignee:
MITSUBISHI CHEMICAL CORPORATION (1-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 51, 〒1008251, JP)
International Classes:
G10K11/162; B60R13/08; D01F6/38
Foreign References:
JP2016034828A2016-03-17
JPH11222717A1999-08-17
JP2008095255A2008-04-24
JP2012112072A2012-06-14
JP2010085873A2010-04-15
JP2006526081A2006-11-16
JP2004354844A2004-12-16
Attorney, Agent or Firm:
KOBAYASHI, Hitoshi et al. (Mutsumi Int. Patent Bureau, p.c. Tousen kanda sudacho Bldg.9F, 28, Kanda-sudacho 1-chome, Chiyoda-k, Tokyo 41, 〒1010041, JP)
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