초록

Stable, heat-set, helically crimped fibers are economically produced with in-line fabric deposition and heat setting and are uncompacted to retain their loft.

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Stable, heat-set, helically crimped fibers are economically produced with in-line fabric deposition and heat setting and are uncompacted to retain their loft. ) drying the web to remove the aqueous medium and leave a condrapable hydrophobic web; the dried web having 0.005 to 0.5% agent thereon, ba

Stable, heat-set, helically crimped fibers are economically produced with in-line fabric deposition and heat setting and are uncompacted to retain their loft. ) drying the web to remove the aqueous medium and leave a condrapable hydrophobic web; the dried web having 0.005 to 0.5% agent thereon, based on the weight of the dried web. 15. The method of claim 1 wherein the fibers are selected from the group consisting of polyolefins, polyesters, polyamides, copolymers thereof and blends thereof. 16. The method of claim 15 wherein the fibers are polyolefins selected from the group consisting of polyethylene, polypropylene, copolymers thereof and blends thereof. 17. The method of claim 16 wherein the fibers are polypropylene. 18. A method of making a condrapable hydrophobic nonwoven web of continuous fibers, comprising the steps of: (A) providing a hydrophobic nonwoven web of continuous fibers having an initial condrapability; (B) applying to the web a fiber surface-modifying agent dispersed in an aqueous medium, the agent comprising an amino-modified polydimethylsiloxane; and (C) drying the web to remove the aqueous medium and leave a condrapable hydrophobic web; the fibers being blends of polypropylene/polyethylene copolymer containing about 4% polyethylene. 19. The method of claim 1 wherein the web is a meltspun nonwoven. 20. The method of claim 1 wherein the fibers are consolidated by a process selected from the group consisting of thermal bonding, chemical bonding, hydroentanglement and needle punch. 21. The method of claim 20 wherein the fibers are consolidated by a thermal bonding process. 22. A method of making a condrapable hydrophobic nonwoven web of continuous fibers, comprising the steps of: (A) providing a hydrophobic nonwoven web of continuous fibers having an initial condrapability; (B) applying to the web a fiber surface-modifying agent dispersed in an aqueous medium, the agent comprising an amino-modified polydimethylsiloxane; and (C) drying the web to remove the aqueous medium and leave a condrapable hydrophobic web; the web having a bonding area of about 12-18% based on the total area of the web. 23. The method of claim 2 wherein the hydrophilic emulsifier is nonionic. 24. The method of claim 23 wherein the hydrophilic emulsifier is at least one ethoxylated fatty alcohol. 25. The method of claim 23 wherein the hydrophilic emulsifier includes a nonionic or cationic co-emulsifier. 26. The method of claim 23 wherein the hydrophilic emulsifier has an HLB of 8 to 17. 27. The method of claim 23 wherein the hydrophilic emulsifier is present at 3 to 30%, based on the weight of the agent. 28. A method of making a condrapable hydrophobic nonwoven web of continuous fibers, comprising the steps of: (A) providing a hydrophobic nonwoven web of continuous fibers having an initial condrapability; (B) applying to the web a fiber surface-modifying agent dispersed in an aqueous medium, the agent comprising an amino-modified polydimethylsiloxane; and (C) drying the web to remove the aqueous medium and leave a condrapable hydrophobic web; the dried web being characterized by a substantial hydrophobicity, as measured by a strike-through of over 180 seconds, and by a substantial improvement in condrapability, as measured by a Handle-O-Meter decrease of at least 15% average for MD and CD relative to the initial condrapability. 29. The method of claim 28 wherein the decrease is at least 20% average for MD and CD. 30. A method of making a condrapable hydrophobic nonwoven web of continuous fibers, comprising the steps of: (A) providing a hydrophobic nonwoven web of continuous fibers having an initial condrapability; (B) applying to the web a fiber surface-modifying agent dispersed in an aqueous medium; and (C) drying the web to remove the aqueous medium and leave a dried web characterized by a substantial hydrophobicity, as measured by a strike-through of at least 180 seconds, and by a substantial improvement in condrapability, as measured by a Handle-O-Meter decrease of at least 15% average for MD and CD relative to the initial condrapability. 31. The me