Nonwoven fabric made of an ethylene/tetrafluoroethylene...

Details Nonwoven fabric made of an ethylene/tetrafluoroethylene... Nonwoven fabric made of an ethylene/tetrafluoroethylene...

2011-04-19

2011-04-19

Torres-Velazquez, Norca L (Department: 1786)

Stock material or miscellaneous articles

Structurally defined web or sheet

Weight per unit area specified

C442S327000, C442S340000, C442S400000, C442S409000

Reexamination Certificate

active

07927690

ABSTRACT:
It is an object of the present invention to provide a nonwoven fabric which is excellent in the heat resistance and the chemical resistance, of which the fiber diameter is small, which is excellent in the strength and of which the maximum pore diameter is small.A nonwoven fabric made of an ethylene/tetrafluoroethylene copolymer, characterized in that the nonwoven fabric is mutually fused continuous fibers of an ethylene/tetrafluoroethylene copolymer which has a melt viscosity of from higher than 100 to 1,500 Pa·s at 240° C.

REFERENCES:
patent: 5470663 (1995-11-01), Wadsworth et al.
patent: 2005/0214611 (2005-09-01), Hommura
patent: 7-229048 (1995-08-01), None
patent: 2002-266219 (2002-09-01), None

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