Patents

Sound absorbent thin-layer laminate

March 30, 2004

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

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