Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1992-01-03
1993-09-14
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156167, 26417713, 26417719, 26417717, 2642108, 26421112, 26421114, 428288, 428296, 428399, D01D 5088, D04H 303, D04H 316
Patent
active
052447235
ABSTRACT:
A method of forming substantially continuous filaments which involves the steps of (1) extending a molten thermoplastic polymer through a die having a plurality of orifices to give a plurality of substantially continuous filaments; (2) quenching the filaments by contacting them with a quenching fluid having a temperature less than that of the filaments and a zero to high imposed velocity which, if other than zero, has a component which is in a direction other than parallel with the movement of filaments; (3) entraining and drawing the filaments in a nozzle with an attenuating liquid having a linear speed of at least about 400 feet/minute; and (4) collecting the drawn filaments. The filaments have an average diameter in the range of from about 5 to about 75 micrometers and a high variability of filament diameter from filament to filament and along the length of any given filament. In addition, at least some of such filaments are present as filament bundles. Such filaments can be collected as tow or can form the basis of a nonwoven web which is characterized by minimal filament-to-filament fusion bonding. The preferred thermoplastic polymers are polyolefins, with the most preferred polyolefin being polypropylene.
REFERENCES:
patent: 3016599 (1962-01-01), Perry
patent: 3148101 (1964-09-01), Allman et al.
patent: 3185613 (1965-05-01), Adams
patent: 3341394 (1967-09-01), Kinney
patent: 3655862 (1972-04-01), Dorschner
patent: 3680301 (1972-08-01), Michel
patent: 3691748 (1972-09-01), Buyano
patent: 3692618 (1972-09-01), Dorschner
patent: 3704198 (1972-11-01), Prentice
patent: 3705068 (1972-12-01), Dobo
patent: 3755527 (1973-08-01), Keller
patent: 3802817 (1974-04-01), Matsuki
patent: 3849241 (1974-11-01), Butin
patent: 3853651 (1974-12-01), Porte
patent: 3959421 (1976-05-01), Weber
patent: 3978185 (1976-08-01), Buntin
patent: 4059950 (1977-11-01), Negishi
patent: 4064605 (1977-12-01), Akiyama
patent: 4091140 (1978-05-01), Harmon
patent: 4100319 (1978-07-01), Schwartz
patent: 4100324 (1978-07-01), Anderson
patent: 4118531 (1978-10-01), Hauser
patent: 4340563 (1982-07-01), Appel
patent: 4340631 (1982-07-01), Endo
patent: 4405297 (1983-09-01), Appel
patent: 4434204 (1984-02-01), Harman
patent: 4521364 (1985-06-01), Norota et al.
patent: 4627811 (1986-12-01), Greiser
patent: 4644045 (1987-02-01), Fowells
patent: 4663220 (1987-05-01), Wisneski
patent: 5171504 (1992-12-01), Cuculo et al.
V. A. Wente, "Superfine Thermoplastic Fibers", vol. 48, No. 8, pp. 1342-1346 (1956).
V. A. Wente et al., "Manufacture of Superfine Organic Fibers", NRL Report 4364 (111437), dated May 25, 1954.
Robert R. Butin and Dwight T. Lohkamp, "Melt Blowing-A One-Step Web Process for New Nonwoven Products", vol. 56, No. 4, pp. 74-77 (1973).
Anderson Richard A.
Lau Jark C.
Cannon James C.
Kimberly-Clark Corporation
Maycock William E.
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