Formable sheet-form textile material for lining noise-affected rooms and process for its preparation

US5230940A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Robert R. Bohm · Wiesenbach, DE
• Erwin Schneider · Fulda, DE
• Dietrich Hahl · Kandern, DE
• Peter J. Russell · Tenbury Wells, GB
• Hans-Gunter Vogt · Dormagen, DE

Key dates

• Filing date: Jul 9, 1991
• Grant date: Jul 27, 1993
• Expiry date: Jul 9, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/59
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A formable sheet-form textile material for lining noise-affected rooms, particularly the passenger compartment of motor vehicles, consisting of a fabric, a needled or tufted layer as the visible surface, at least one thermoformable and foam-backable layer and a foamed backcoating, in which the layer serving as the visible surface consists of needlefelt or of a tufted surface (2) needled into felt as the backing layer (1), to the back of which a layer (3) of foamed latex, an impermeable barrier layer (4) and, optionally, the foamed backcoating (5) are applied. The backing layer may also be a thin layer of a lightly bonded felt onto which a thicker layer of an unbonded felt is laminated by means of a binder which simultaneously binds the needling into the backing layer. The layers have a permeability to sound which continuously decreases from the backing layer (1) to the backcoating (5). The barrier layer (4) is formed by a film or by a coating of unfoamed latex.