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US 6,147,018 AGranted
Hybrid protective composite
AssigneeE. I. Du Pont de Nemours and Company
InventorMinshon J. Chiou
Life of this patent
Estimating the term…
Abstract
A composite is disclosed which is resistant to knife stab penetration and is made from at least one layer of woven polybenzoxazole or polybenzothiazole fibers and at least one layer of a fiber network of another polymer.
Claims8
A protective composite structure comprising:
- a.) At least one layer of woven fabric comprising polybenzoxazole or polybenzothiazole fibers,
- b.) At least one layer comprising a network of fibers of other polymeric material and wherein the composite has an areal density of less than 1.4 pounds per square foot (6.83 kilograms per square meter) with a penetration resistance of greater than 45 Joules.
A composite structure for protection against penetration from a knife stab comprising:
- a.) A section, exposed to the knife stab, comprising at least one layer of woven fabric comprising polybenzoxazole or polybenzothiazole fibers,
- b.) A section, away from the knife stab, comprising at least one layer comprising a network of fibers of other polymeric materials, and wherein the composite has an areal density of less than 1.4 pounds per square foot (6.83 kilograms per square meter) with a penetration resistance of greater than 45 Joules.
Dependencies are inferred from the claim text.