Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1991-11-12
1992-11-17
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
428292, 428297, 428298, 428302, 428303, 428332, 428364, 428365, 428375, 428378, 428401, 428408, 428902, D04H 0000, D02G 300, B32B 900, B32B 506
Patent
active
051642557
ABSTRACT:
A nonwoven planar preform sheet for a polymer composite consisting of 20% to 80% by weight reinforcing fibers and 20% to 80% by weight matrix resin, the reinforcing fibers being from 1/8 to 6 inches in length from 1 to 50 micrometers in diameter, and being arrayed in the composite as chips of from 2 to 5000 parallel filaments, each substantially uniformly coated with matrix resin, all of the filaments of each chip ending in a single plane orthogonal to the filament direction, where the thickness of the chips is from 1 to 50 filament diameters and the length to thickness ratio is greater than 100. The chips may be either randomly oriented or oriented in the same direction in the plane of the sheet.
REFERENCES:
patent: 3369843 (1968-02-01), Prew
patent: 3490983 (1970-01-01), Lee
patent: 3686048 (1972-08-01), Schirtzinger
patent: 4294490 (1981-10-01), Woelfel
patent: 4339490 (1982-07-01), Yoshioka
patent: 4432916 (1984-02-01), Logan
patent: 4640861 (1987-02-01), Binnersley et al.
patent: 4818582 (1989-04-01), Gilgrass
patent: 4820568 (1989-04-01), Harpell et al.
patent: 4857385 (1989-08-01), Armiger et al.
patent: 4863780 (1989-09-01), Armiger et al.
patent: 4883700 (1989-11-01), Harpell et al.
E. I. Du Pont de Nemours and Company
Lesmes George F.
Withers James D.
LandOfFree
Nonwoven preform sheets of fiber reinforced resin chips does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nonwoven preform sheets of fiber reinforced resin chips, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonwoven preform sheets of fiber reinforced resin chips will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1170928