Sound absorbent thin-layer laminate
Patent #: 6,720,068
Inventor(s): William Ray Vanbemmel, Anthony Vulpitta and Thorsten Alts
Company: Rieter Automotive (International) AG
Filed: 1999-03-01
Issued: 2004-03-30
Description:
A patent has been issued for a sound-absorbing thin-layer laminate comprised of a backing layer and an open-celled fiber layer. The backing layer consists of an open-celled plastic foam layer with a density of 16-32 kg/m3 and a thickness of at least 6 mm. The open-celled fiber layer consists of meltblown microfibres, the diameter of which ranges from 1-10 micrometers, with a weight per unit area of 20-200 g/m2. The thin-layer laminate exhibits air flow resistance in the range of 500


