Claims
- 1. A formable sheet-form textile material for lining noise-affected rooms, particularly the passenger compartment of motor vehicles, comprising a visible surface, a foamed polymer latex layer, at least one barrier layer and a noise-insulating foamed backcoating, the visible surface comprising, a needlefelt or a tufted surface needled in a felt backing layer, onto the back of which the layer of foamed latex, the barrier layer and the noise-insulating foamed backcoating are applied.
- 2. A formable sheet-form textile material as claimed in claim 1 wherein the backing layer is a thin layer of a lightly bonded felt onto which a thicker layer of an unbonded felt is laminated by means of an adhesive.
- 3. A formable sheet-form textile material as claimed in claim 1 wherein the layers have a permeability to noise which decreases continuously from the backing layer to the backcoating.
- 4. A formable sheet-form material as claimed in claim 2 wherein the adhesive is formed of a soft thermoplast.
- 5. A formable sheet-like textile material as claimed in claim 1, wherein the barrier layer is formed by a film or coating of an unfoamed latex.
- 6. A formable sheet-form textile material as claimed in claim 1, wherein the foamed latex is filled with inorganic filler.
- 7. A formable sheet-form textile material as claimed in claim 1, wherein the polymer for the foam latex consists of one or more copolymers comprising
- A. 36 to 90 parts of at least one of the units selected from the group consisting of
- a) an aromatic C.sub.8 -C.sub.14 vinyl or vinylidene compound and
- b) methyl methacrylate, up to 30% by weight of the sum (a+b) being replaceable by
- c) acrylonitrile
- B. 10 to 64 parts by weight of at least one of a conjugated C.sub.4 -C.sub.9 diene or C.sub.2 -C.sub.8 alkyl acrylate,
- C. 0 to 8 parts by weight of at least one of an .alpha.,.beta.-ethylenically unsaturated C.sub.3 -C.sub.5 mono- or C.sub.4 -C.sub.6 dicarboxylic acid and
- D. 0 to 10 parts by weight of other copolymerizable compounds, the sum of components A. to D. being 100 parts by weight.
- 8. A formable sheet-form textile material as claimed in claim 7 wherein the latex base consists of one or more polymers of from 45 to 80 parts by weight styrene and, 20 to 55 parts by weight butadiene or n-butyl acrylate and 0 to 5 parts by weight unsaturated acid C.
- 9. A formable sheet-form textile material as claimed in claim 1 wherein the latex contains at least two polymers having different glass transition temperatures, wherein a first polymer is a hard latex having a higher glass transition temperature than a second polymer which is a soft latex having film-forming properties.
- 10. A formable sheet-form textile material as claimed in claim 9 wherein the hard latex polymer contains 92 to 100% by weight polymerized units of component A. and 0 to 8% by weight copolymerized units of component C., based in either case on hard latex polymer.
- 11. A formable sheet-form textile material as claimed in claim 9 wherein the soft latex polymer contains 20 to 75% by weight copolymerized units of component A., 25 to 80% by weight copolymerized units of component B., 0 to 8% by weight copolymerized units of component C. and 0 to 10% by weight copolymerized units of component D., based in each case on soft latex polymer.
- 12. A formable sheet-form textile material as claimed in claim 10 wherein the hard latex has a glass transition temperature above 90.degree. C. while the soft latex has a glass transition temperature below 30.degree. C. and the latice are mixed in a ratio of 45/55 to 80/20 and the average particle diameter d.sub.50 of the latex polymers is between 50 and 300 nm.
Priority Claims (2)
Number |
Date |
Country |
Kind |
3727932 |
Aug 1987 |
DEX |
|
3800779 |
Jan 1988 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATION
The present application is a continuation of application Ser. No. 233,160, filed Aug. 17, 1989, now abandoned.
US Referenced Citations (4)
Continuations (1)
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Number |
Date |
Country |
Parent |
233160 |
Aug 1988 |
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