D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
18/586
D04H 1/56 (2006.01) C08K 5/54 (2006.01) D01F 1/10 (2006.01) D04H 3/16 (2006.01)
Patent
CA 1334781
A nonwoven web is prepared by the method of forming a nonwoven web from a composition composed of at least one thermoplastic polymer and at least one defined siloxane- containing additive, which method involves the steps of (A) forming fibers by extruding a molten thermoplastic composition through a die; (B) drawing the fibers; (C) collecting the fibers on a moving foraminous surface as a web of entangled fibers; and either (D) heating the web at a temperature of from about 27 to about 95° C for a period of time sufficient to cause additional additive to move to the surfaces of the fibers, or (E) passing the web through a pair of compacting rolls, at least one of which is heated, before removing the web from the foraminous surface. The method of the present invention is particularly useful for the preparation of nonwoven webs, the fibers of which have at least one surface characteristic which is different from the surface characteristics of the polymer component of the thermoplastic composition. Such webs, in turn, are useful in the construction of such disposable absorbent products as diapers, feminine care products, incontinence products, and the like.
596644
Macdonald J. Gavin
Nohr Ronald S.
Borden Ladner Gervais Llp
Kimberly-Clark Worldwide Inc.
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