Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Production of continuous or running length
Patent
1996-03-27
1997-09-09
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Production of continuous or running length
156161, 156167, 156181, 264103, 2642102, 2642108, 26421112, 26421114, D01D 5098, D04H 300
Patent
active
056653000
ABSTRACT:
An improved process and apparatus are provided for the formation of a spun-bonded fibrous web suitable for service in nonwoven end uses. A melt-processable thermoplastic polymeric material is melt-extruded to form a multifilamentary spinline, is quenched, and is wrapped about at least two spaced driven draw rolls that are surrounded by a shroud prior to collection to form a web, and is bonded to form a spun-bonded nonwoven product. The draw rolls exert a pulling force on the multifilamentary spinline so as to accomplish drawing of the molten multifilamentary spinline prior to complete solidification. The shroud makes possible the self-stringing of the spinline around the draw rolls. A pneumatic jet located at the exit end of the shroud assists in the contact of the multifilamentary spinline with the draw rolls in order to facilitate the imposition of a uniform pulling force and expels the multifilamentary spinline in the direction of its length toward a support where it is collected. The formation of a highly uniform spun-bonded nonwoven is made possible on an expeditious basis.
REFERENCES:
patent: 1975132 (1934-10-01), Van Derhoef
patent: 2536094 (1951-01-01), Mcdermott et al.
patent: 2976580 (1961-03-01), Riedel
patent: 3930292 (1976-01-01), Schippers et al.
patent: 3991244 (1976-11-01), Debbas
patent: 3999909 (1976-12-01), Schippers et al.
patent: 4070218 (1978-01-01), Weber
patent: 4284395 (1981-08-01), Kane
patent: 5009830 (1991-04-01), Chern
patent: 5014396 (1991-05-01), Nieminen
patent: 5298097 (1994-03-01), Zamferrari
patent: 5431986 (1995-07-01), Ortega et al.
patent: 5439364 (1995-08-01), Gerking et al.
Brignola Edward L.
Fleck Alvin A.
LaCroix Price W.
Willis Edward K.
Zimmerman, deceased Leon H.
Reemay Inc.
Tentoni Leo B.
LandOfFree
Production of spun-bonded web does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Production of spun-bonded web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of spun-bonded web will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-67271