Sound-absorbing textile composite

US10825439B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Angela Weik · Brauel, DE
• Sandra Villing-Falusi · Mannheim, DE
• Peter Rutsch · Weinheim, DE

Key dates

• Filing date: Nov 6, 2017
• Grant date: Nov 3, 2020
• Expiry date: Oct 25, 2038

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D04H1/56
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

In an embodiment, the present invention provides a sound-absorbing textile composite, including: a) at least one open-pore support layer comprising coarse staple fibers having a titer of from 3 dtex to 17 dtex and fine staple fibers having a titer of from 0.3 dtex to 2.9 dtex, as scaffold fibers; and b) a microporous flow layer arranged on the support layer and including microfibers having a fiber diameter of less than 10 μm. A flow resistance of the sound-absorbing textile composite is from 250 Ns/m3 to 5000 Ns/m3.