Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1996-08-29
1997-11-04
Page, Thurman K.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428296, 428298, D04H 104, B32B 522
Patent
active
056837941
ABSTRACT:
A multilayered nonwoven composite web particularly useful as a substitute for a woven web such as a textile web, and having improved liquid wicking and retention properties comprising a first layer of fibrous material selected from the group consisting of thermoplastic meltblown man-made fibers, thermoplastic spunbonded man-made fibers, thermoplastic man-made staple fibers and combinations thereof, this first layer being light weight, and a second layer of cellulosic-based fibers, preferably cotton fibers, the first and second layers being thermally bonded together over about 5 to 75% of the surface area of the web to form a coherent web having an air permeability of between about 25 and about 37 ft.sup.3 /min/ft.sup.2 (0.127 and 0.188 m.sup.3 /sec/m.sup.2). In a preferred embodiment, the composite web includes at least a third layer of thermoplastic man-made fibers and the layer of cellulose-based fibers is sandwiched between the two layers of thermoplastic man-made fibers.
REFERENCES:
patent: 4950531 (1990-08-01), Radwanski et al.
patent: 4970104 (1990-11-01), Radwanski et al.
Valmet Paper Machinery, Honeycomb Hydroentanglement For Soft, Strong, Nonwovens, pp. 1-6.
Wadsworth, L.C. et al, Proceedings of Fiber Producer Conference 1983, Handbook of Fiber Science and Technology, vol. 2, pp. 172-183 (1983).
Balasubramanian Venkataramanan
Duckett Kermit E.
Wadsworth Larry C.
Page Thurman K.
Shelborne Kathryne E.
The university of Tennessee Research Center
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