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EP0268875A1
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Releasable polyurethane-backed textiles and process for preparing the same
Assignee: Dow Chemical Co
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Filing: 1987-11-02
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Granted: —
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Expires: 2007-11-02
Abstract
Abstract This invention relates to a floor covering which may be easily removed from its underlying surface and which resists buckling or folding when rolled, comprising: (a) a facing layer; (b) a bottommost release backing layer which comprises a non-woven fabric of relatively short fibers, and (c) a polymer layer which is bonded to the release backing layer on one side and directly or indirectly to the facing layer on the other side. In another aspect, this invention relates to an improvement in a process for preparing a polymer-backed floor covering, which process comprises applying a layer of an uncured polymer-forming composition to one side of a textile and curing said composition to form a polymer backing attached to said textile, the improvement which comprises applying a layer of a non-woven fabric of relatively short fibers or continuous filament fibers to the polymer backing before said polymer-forming composition is cured to a tack-free state.
Inventors
- 👤 William Carl Poteet
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:50
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; D06N7/0081; D06N7/0086; D06N2201/00; D06N2201/02; D06N2201/0254; D06N2203/00; D06N2203/06; D06N2203/068; D06N2205/00; D06N2205/02; D06N2205/023; D06N2205/04; D06N2205/045; D06N2205/20; D06N2207/00; D06N2207/04; D06N2207/08; D06N2211/00; D06N2211/06; D06N2211/066; D06N2213/00; D06N2213/06; D06N2213/066; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249983; Y10T428/27; Y10T428/28; Y10T428/2848; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/15; Y10T442/184; Y10T442/195; Y10T442/30; Y10T442/3325
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
68 words
A floor covering which may be easily removed from its underlying surface and which resists buckling or folding when rolled, comprising: (a) a facing layer; (b) a bottommost release backing layer which comprises a non-woven fabric of relatively short fibers, and (c) a polymer layer which is bonded to the release backing layer on one side and directly or indirectly to the facing layer on the other side.
Claim 2
Dependent Claim
68 words
A floor covering which may be easily removed from its underlying surface and which resists buckling or folding when rolled, comprising: (a) a facing layer; (b) a bottommost release backing layer which comprises a non-woven fabric of relatively short fibers, and (c) a polymer layer which is bonded to the release backing layer on one side and directly or indirectly to the facing layer on the other side.
Claim 3
Dependent Claim
35 words
A floor covering as claimed in claim 1 wherein said release backing comprises a non-woven fabric composed of randomly oriented polymeric fibers having an average length of 3/16 to 12 inches (4.8 to 305 mm).
Claim 4
Dependent Claim
33 words
A floor covering as claimed in Claim 1 or 2 wherein said non-woven fabric is needle-punched and said polymeric fibers have an average length of 2 to 8 inches (51 to 203 mm).
Claim 5
Dependent Claim
21 words
A floor covering as claimed in any one of the preceding claims wherein said polymeric fibers comprise polypropylene or polyester fibers.
Claim 6
Dependent Claim
23 words
A floor covering as claimed in any one of the preceding claims wherein the outer surface of the release backing layer is calendered.
Claim 7
Dependent Claim
20 words
A floor covering as claimed in any one of the preceding claims wherein said polymer layer comprises a polyurethane foam.
Claim 8
Dependent Claim
23 words
A floor covering as claimed in any one of the preceding claims wherein the release backing and the polyurethane foam layer are regauged.
Claim 9
Dependent Claim
67 words
In a process for preparing a polymer-backed floor covering, which comprises applying a layer of an uncured polymer-forming composition to one side of a textile and curing said composition to form a polymer backing attached to said textile, the improvement which comprises applying a layer of a non-woven fabric of relatively short fibers to the polymer backing before said polymer-forming composition is cured to a tack-free state.
Claim 10
Dependent Claim
67 words
In a process for preparing a polymer-backed floor covering, which comprises applying a layer of an uncured polymer-forming composition to one side of a textile and curing said composition to form a polymer backing attached to said textile, the improvement which comprises applying a layer of a non-woven fabric of relatively short fibers to the polymer backing before said polymer-forming composition is cured to a tack-free state.
Claim 11
Dependent Claim
26 words
A process as claimed in Claim 8 further comprising the step of regauging the polymer backing prior to the time the polymer-forming composition is fully cured.
Claim 12
Dependent Claim
56 words
A process as claimed in Claim 9 wherein said polymer backing comprises a polyurethane foam, said facing layer comprises a woven or tufted carpet facing, said top layer is a polymeric scrim, and said non-woven fabric composed of randomly oriented, needle-punched polymeric fibers having an average length of 2 to 8 inches (51 to 203 mm).
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