EP 1611275 A1 20060104 - ACOUSTICALLY EFFECTIVE NONWOVEN MATERIAL FOR VEHICLE LINERS
Title (en)
ACOUSTICALLY EFFECTIVE NONWOVEN MATERIAL FOR VEHICLE LINERS
Title (de)
AKUSTISCH WIRKSAMER VLIESSTOFF FÜR FAHRZEUGAUSKLEIDUNGEN
Title (fr)
MATERIAU NON-TISSE A EFFET ACOUSTIQUE, DESTINE A DES ELEMENTS DE GARNITURE POUR VEHICULES
Publication
Application
Priority
- CH 2004000193 W 20040330
- CH 5552003 A 20030331
Abstract (en)
[origin: WO2004088025A1] 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.
IPC 1-7
IPC 8 full level
D04H 1/42 (2012.01); D04H 1/4291 (2012.01); D04H 1/4334 (2012.01); D04H 1/435 (2012.01); D04H 3/007 (2012.01); D04H 3/011 (2012.01); D04H 5/02 (2012.01); D04H 5/03 (2012.01); D04H 5/06 (2006.01); B29C 43/00 (2006.01); B60R 13/08 (2006.01)
CPC (source: EP KR US)
B29C 43/003 (2013.01 - KR); B32B 5/26 (2013.01 - KR); B60R 13/08 (2013.01 - KR); D04H 1/4291 (2013.01 - EP KR US); D04H 1/4334 (2013.01 - EP KR US); D04H 1/435 (2013.01 - EP KR US); D04H 1/43838 (2020.05 - EP KR US); D04H 3/007 (2013.01 - EP KR US); D04H 3/011 (2013.01 - EP KR US); D04H 5/02 (2013.01 - EP US); D04H 5/03 (2013.01 - EP KR US); D04H 5/06 (2013.01 - EP KR US); D04H 13/00 (2013.01 - KR); B29C 43/003 (2013.01 - EP US); B29K 2105/06 (2013.01 - EP KR US); B60R 13/08 (2013.01 - EP US); Y10T 442/60 (2015.04 - EP US); Y10T 442/614 (2015.04 - EP US); Y10T 442/68 (2015.04 - EP US); Y10T 442/681 (2015.04 - EP US)
Citation (search report)
See references of WO 2004088025A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004088025 A1 20041014; BR PI0408917 A 20060328; CN 1768178 A 20060503; EP 1611275 A1 20060104; JP 2006526081 A 20061116; KR 20050123137 A 20051229; MX PA05010486 A 20051116; US 2006128246 A1 20060615
DOCDB simple family (application)
CH 2004000193 W 20040330; BR PI0408917 A 20040330; CN 200480008715 A 20040330; EP 04724239 A 20040330; JP 2006504163 A 20040330; KR 20057018786 A 20050930; MX PA05010486 A 20040330; US 55138205 A 20051101