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Title:
車両の内張用の音響的効果を有する不織布
Document Type and Number:
Japanese Patent JP2006526081
Kind Code:
A
Abstract:
An acoustically effective nonwoven for linings of motor vehicles comprises a porous fibrous skeleton made of coarse fibers ( 8 ). These coarse fibers ( 8 ) comprise in particular staple fibers or spun-bonded fibers. A continuously changing weight quota of melted-on microfibrous material ( 7 ) is foreseen in a front and/or rear surface region ( 4 ). This melted-on microfibrous material ( 7 ) clings to the coarse fibers ( 8 ) and bonds these in such a manner that the nonwoven has a predetermined airflow resistance and is stiffened at least in its surface region ( 4 ). The airflow resistance in the surface region ( 4 ) has a value of between 200-60000 Nsm-3, in particular between 800-35000 Nsm-3, preferably between 1000-20000 Nsm-3, and mainly about 1400 Nsm-3. The bending stiffness of this fibrous nonwoven has a value of between 0.005 and 10 Nm, and in particular a value of between 0.25 and 6.0 Nm.

Inventors:
Peter Andereg
Application Number:
JP2006504163A
Publication Date:
November 16, 2006
Filing Date:
March 30, 2004
Export Citation:
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Assignee:
RIETER TECHNOLOGIES A.G.
International Classes:
D04H3/16; B60R13/08; D04H1/42; D04H1/4291; D04H1/4334; D04H1/435; D04H3/007; D04H3/011; D04H5/02; D04H5/03; D04H5/06; G10K11/16; G10K11/162; B29C43/00
Attorney, Agent or Firm:
Hiroshi Hayashi
Masahiko Goto
Hayashi Naoki