Nonwoven fabric formed from alloy fibers

Details Nonwoven fabric formed from alloy fibers Nonwoven fabric formed from alloy fibers

C - Chemistry, Metallurgy

08

L

C08L 101/00 (2006.01) B32B 5/26 (2006.01) D01F 8/06 (2006.01) D01F 8/12 (2006.01) D04H 1/42 (2006.01) D04H 1/54 (2006.01) D04H 1/56 (2006.01)

Patent

CA 2111172

ABSTRACT A nonwoven fabric is provided which is made from fibers comprising at least two thermoplastic polymers and a compatibilizer. One of the thermoplastic polymers is present as a dominant continuous phase and the other one or more polymers are present as a non-continuous phase or phases. The polymer of the non-continuous phase or phases has a polymer melt temperature less than 30 °C below the polymer melt temperature of the continuous phase. The polymer of the dominant phase may be, for example, polypropylene and the non-continuous phase may be, for example, polyamide. The compatibilizer may be one of several such as zinc ionomers of ethylene- methacrylic acid or modified polypropylene with maleic anhydride. The fibers from which the fabric is made are generally between about 5 and 50 microns in diameter and the non-continuous phase may exist within the continuous phase as fibrils with a cross-sectional area at least 0.1% of the cross-sectional area of the fiber.

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