B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/08 (2006.01) D04H 1/54 (2006.01) D04H 1/56 (2006.01) D04H 13/00 (2006.01)
Patent
CA 2079246
-31- BONDED COMPOSITE NONWOVEN WEB AND PROCESS Abstract of the Invention The invention is directed to nonwoven fabrics including at least one fibrous web which preferably includes staple or natural fibers, having a bonding layer of thermoplastic material disposed primarily within a substantially discrete cross-sectional portion of the web and below at least one surface of the web. The layer of bonding material comprises a thermally fused thermoplastic web derived from a layer of thermoplastic meltblown fibers. The layer of bonding material can be an elastomeric layer or a non- elastomeric layer thus providing a fabric having elastic or non-elastic properties. The bonding layer adds strength and optionally elastic properties, to the fabric and anchors fibers of the fibrous layer in the fabric. Advantageously, the fabric of the invention is made by hydroentangled a layered web including a first fibrous layer and a layer of meltblown fibers and thermally treating the hydroentangled layered web sufficiently to fuse the thermoplastic meltblown fibers. 62560
Allan John L.
Austin Jared A.
Gessner Scott L.
Newkirk David D.
Zimmerman Guy S. Jr.
Fiberwed North America Inc.
Sim & Mcburney
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