Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1993-04-21
1994-03-01
Bell, James J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
2272, 28104, 28105, 55DIG2, 428137, 428284, 428286, 428287, 428296, 428297, 428298, 428326, 428910, B32B 506
Patent
active
052906280
ABSTRACT:
A process for hydraulically needling a web of staple fibers into an unbonded flash spun web made of continuous plexifilaments to form a spunlaced nonwoven fabric. The web of staple fibers is positioned against the unbonded flash spun web and then hydraulically needled such that the staple fibers are embedded into and entangled with the unbonded flash spun web to form a spunlaced nonwoven fabric. Optionally, the spunlaced nonwoven fabric can be thermally bonded to maintain or increase the permeability of the fabric. Thermal bonding can be used to control the level of permeability depending on the end-use desired. Spunlaced nonwoven fabrics made by the inventive process are particularly useful in filtration applications (e.g., vacuum cleaner bags) when thermal bonding is employed and as bulky, downproof and featherproof barrier liners for garments, sleeping bags, pillows, comforters and the like when thermal bonding is not employed.
REFERENCES:
patent: 3169899 (1965-02-01), Steuber
patent: 3403862 (1968-10-01), Dworjanyn
patent: 3485706 (1969-12-01), Evans
patent: 3600483 (1971-08-01), Davis et al.
patent: 4514455 (1985-04-01), Hwang
patent: 4681801 (1987-07-01), Elan et al.
patent: 4775579 (1988-10-01), Hagy et al.
patent: 4883709 (1989-11-01), Nozaki et al.
patent: 4988560 (1991-01-01), Meyer et al.
patent: 5013599 (1991-05-01), Guckert et al.
patent: 5023130 (1991-06-01), Simpson et al.
patent: 5047121 (1991-09-01), Kochar
patent: 5144729 (1992-09-01), Austin et al.
patent: 5150660 (1992-09-01), Kuczynski
patent: 5151320 (1992-09-01), Homonoff et al.
"Protective Apparel of DuPont `Tyvek`-Safety You Can Wear", E-02145 (1987).
Lim Hyun S.
Peterson Robert H.
Siemionko Roger K.
Vincent James R.
Bell James J.
E. I. Du Pont de Nemours and Company
LandOfFree
Hydroentangled flash spun webs having controllable bulk and perm does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydroentangled flash spun webs having controllable bulk and perm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydroentangled flash spun webs having controllable bulk and perm will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-575762