Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1990-06-08
1995-06-27
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428369, 428371, 428903, 19296, 19 661, 264168, B05D 500
Patent
active
054278457
ABSTRACT:
Melt-spun filaments having a highly crimped configuration which is imparted by differential cooling, nonwoven webs of the crimped melt-spun filaments, and a process of forming a nonwoven web of the crimped filaments are disclosed. The filaments are formed from a random copolymer of propylene and ethylene or an alpha-olefin co-monomer having at least 4 carbon atoms which provides an enhanced response to filament crimping by differential cooling. The random copolymer may contain from about 0.5 to about 10 percent, by weight, of ethylene or an alpha-olefin co-monomer having at least 4 carbon atoms; and from about 99.5 to about 90 percent, by weight, propylene. The alpha-olefin co-monomer having at least 4 carbon atoms may be 1-butene, 4-methyl-1-pentene, 1-hexene, or 1-octene. When differentially cooled and collected into a nonwoven web, the crimped filaments provide a nonwoven web having a combination of softness, low density, high bulk and porosity which are associated with desirable fluid transfer characteristics.
REFERENCES:
patent: 3322607 (1967-05-01), Jung
patent: 3480709 (1969-11-01), Jacob et al.
patent: 3577498 (1971-05-01), Matsuo et al.
patent: 3914497 (1975-10-01), Kanehira et al.
patent: 3929542 (1975-12-01), Gehrig et al.
patent: 4209563 (1980-06-01), Sisson
patent: 4211819 (1980-07-01), Kunimune et al.
patent: 4412016 (1983-10-01), Fukui et al.
patent: 4775722 (1988-10-01), Kobayashi et al.
patent: 4783231 (1988-11-01), Raley
patent: 4818597 (1989-04-01), DaPonte et al.
Japanese Abstract-92-100963 Apr. 1992.
Creagan Christopher C.
Faison John C.
Sawyer Lawrence H.
Kimberly-Clark Corporation
Lesmes George F.
Raimund C. W.
Sidor Karl V.
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