Composite nonwoven fabric and method for making same

Details Composite nonwoven fabric and method for making same Composite nonwoven fabric and method for making same

2005-07-19

2005-07-19

Cole, Elizabeth M. (Department: 1771)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S107000, C428S108000, C428S113000, C428S369000, C428S371000, C428S399000, C442S377000, C442S415000, C442S381000, C442S391000, C442S352000

Reexamination Certificate

active

06919117

ABSTRACT:
A composite nonwoven fabric comprising multiple layers of a web formed from a blended mixture of metal fibers and nonmetal fibers is provided. The metal fibers preferably have a rough outer surface with irregular shaped cross-sections that vary along their length. The fibers of adjacent layers of the web material are interengaged in a needlepunching step. The composite nonwoven fabrics of the invention, which have very good isotropic strength. In a preferred embodiment, the composite nonwoven fabric is employed as a floor buffing pad for use with an electric floor buffing apparatus.

REFERENCES:
patent: 4284680 (1981-08-01), Awano et al.
patent: 6249941 (2001-06-01), Krupnik et al.
patent: 2676237 (1997-11-01), None

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