Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1985-12-09
1988-04-12
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428246, 428284, 428286, 428287, 428297, 428902, 428911, B32B 700
Patent
active
047374020
ABSTRACT:
The present invention provides an improved, complex composite article of manufacture which comprises a network of high strength fibers having a tensile modulus of at least about 160 grams/denier and a tenacity of at least about 7 g/denier. An elastomeric material substantially coats each of the individual fibers, and has a tensile modulus of less than about 6,000 psi, measured at 25.degree. C. The coated fibers are provided with at least one additional rigid layer on a major surface of the coated fibers to produce a rigid complex composite. Composites of this construction have improved resistance to environmental hazards, improved impact resistance, and are unexpectedly effective as ballistic resistant articles such as armor plate or helmets.
REFERENCES:
patent: 3722355 (1973-03-01), King
patent: 4403012 (1983-09-01), Harpell et al.
patent: 4413110 (1983-11-01), Kavesh et al.
patent: 4428998 (1984-01-01), Hawkinson
patent: 4457985 (1984-07-01), Harpell et al.
patent: 4613535 (1986-09-01), Harpell et al.
"The Effect of Resin Concentration and Laminating Pressures on KEVLAR Fabric Bonded with Modified Phenolic Resin," Technical Report, WATICK/TR-84-030, Jun. 8, 1984.
Harpell Gary A.
Kavesh Sheldon
Palley Igor
Prevorsek Dusan C.
Allied Corporation
Bell James J.
Fuchs Gerhard
Negin Richard A.
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