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US4082878A Expired / Lapsed US ⏱️ 0.0 years remaining

Absorbent textile sheet material

Assignee: Carl Freudenberg KG
•
Filing: 1976-10-26
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Granted: 1978-04-04
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Expires: 1996-10-26
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Abstract

Abstract An absorbent textile sheet material suitable for use as a cleaning cloth, skid-resistant underlayment or the like, comprising a consolidated nonwoven fabric coated on up to about 70% of both surfaces with binding agent present as a three-dimensionally superelevated printed pattern providing a squeegee-like action when wiped over a wet surface, is produced by impregnating a fibrous web with a binding agent and drying to form a coherent sheet material, applying to each surface of said sheet material a foamed dispersion comprising rubber, the foam being printed onto each surface to cover from about 30 to 70% of the surface, and heating to coagulate the foam and to leave on each surface a superelevated printed pattern of binder exerting a squeegee-like action in use. Advantageously the fibrous web weighs about 60 to 300 g/m 2 , the foamed dispersion contains butadiene-acrylonitrile-styrene-rubber copolymer, is applied to each surface in amount sufficient to deposit about 20 to 40 g of rubber per square meter of surface in a final height of about 0.3 to 1.5 mm and is printed in a pattern which permits no straight lines longer than about 10 mm to be drawn on a surface without intersecting the superelevated pattern.

Inventors

  • 👤 Hans Boe
  • 👤 Ralf Hoehn
  • 👤 Bohuslav Tecl
  • 👤 Wilhelm Kirsch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 18:38
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; B; B32; B32B; B32B3/00; B32B3/26; B32B3/30; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31855; Y10T428/31931; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/649

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 58 words
An absorbent textile sheet material suitable for use as a cleaning cloth, skid-resistant underlayment or the like, comprising a consolidated nonwoven fabric coated on from about 30% to about 70% of both surfaces with a coagulated foamed dispersion comprising rubber and present as a three-dimensionally superelevated printed pattern providing a squeegee-like action when wiped over a wet surface.
Claim 2
Dependent Claim 58 words
An absorbent textile sheet material suitable for use as a cleaning cloth, skid-resistant underlayment or the like, comprising a consolidated nonwoven fabric coated on from about 30% to about 70% of both surfaces with a coagulated foamed dispersion comprising rubber and present as a three-dimensionally superelevated printed pattern providing a squeegee-like action when wiped over a wet surface.
Claim 3
Dependent Claim 20 words
An absorbent textile sheet material according to claim 1, wherein the squeegee-acting super-elevated pattern comprises a heat-sensitive cross-linked butadiene-acrylonitrile-styrene-rubber copolymer.
Claim 4
Dependent Claim 34 words
An absorbent textile sheet material according to claim 1, wherein the superelevated squeegee-acting pattern permits no straight lines longer than about 10 mm to be drawn on a surface without intersecting the superelevated pattern.
Claim 5
Dependent Claim 20 words
An absorbent textile sheet material according to claim 1, wherein the superelevated pattern is printed in a regular geometric pattern.
Claim 6
Dependent Claim 74 words
An absorbent textile sheet material according to claim 4, wherein the superelevated squeegee-acting pattern permits no straight lines longer than about 5 mm to be drawn on a surface without intersecting the superelevated pattern, the sheet material having a fiber weight of about 60 to 300 g/m 2 , a superelevated rubber weight on each surface of about 20 to 40 g/m 2 and a superelevated rubber height of about 0.3 to 1.5 mm.
Claim 7
Dependent Claim 84 words
A process for producing an absorbent textile sheet material according to claim 1, comprising impregnating a fibrous web with a binding agent and drying to form a coherent sheet material, applying to each surface of said sheet material a foamed dispersion comprising rubber, the foam being printed onto each surface to cover from about 30 to 70% of the surface, and heating to coagulate the foam and to leave on each surface a superelevated printed pattern of rubber exerting a squeegee-like action in use.
Claim 8
Dependent Claim 83 words
A process according to claim 6, wherein the fibrous web weighs about 60 to 300 g/m 2 , the foamed dispersion contains butadiene-acrylonitrile-styrene-rubber copolymer, is applied to each surface in amount sufficient to deposit about 20 to 40 g of copolymer per square meter of surface in a final height of about 0.3 to 1.5 mm and is printed in a pattern which permits no straight lines longer than about 1 mm to be drawn on a surface without intersecting the superelevated pattern.

References Cited (Backward Citations)

US2545952A Cited
US3093502A Cited
US3965518A Cited
US3965519A Cited
US3958055A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-04-03 1981-10-03 1982-04-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-04-03 1985-10-03 1986-04-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-04-03 1989-10-03 1990-04-04 $7700.00 Window Closed / Lapsed

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