Ballistic resistant laminate
OwnerLouis A. Pilatoinventor
Life of this patent
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Abstract
Improved ballistic resistant laminates have been developed by bonding alternating plies of fabric woven from glass or normally solid organic polymers and non-woven scrim prepreg impregnated with a heat curable resin. A preferred organic polymer is an aramid exemplified by Kevlar. A preferred heat curable resin is phenol-formaldehyde/polyvinyl butyral blend.
Claims22
A ballistic resistant laminate comprising alternating plies of woven fabric bonded to alternating plies of non-woven scrim prepreg through a heat curable resin in said prepreg wherein said fabric is woven from filaments of glass or at least one normally solid organic polymer having:
- (a) a tensile modulus of at least about 20 g/denier;
- (b) a tensile strength of at least about 400,000 psig;
- and
- (c) an areal density at least about 0.5 lb/ft.sup.2 and said scrim comprises filaments of natural or synthetic fibers impregnated with a heat curable resin.
Laminate claimed in claimed 1 wherein the organic polymer is a high modulus polyethylene.
Method of fabricating a ballistic resistant laminate which comprises:
- (1) assembling alternating plies of fabric woven from glass or a normally solid organic polymer and non-woven scrim prepreg impregnated with a heat curable resin and
- (2) subjecting the assembly of (1) to conditions of heat and pressure sufficient to cure the resin and bond the alternating plies of woven fabric and non-woven scrim into an integral structure;
- wherein said polymer has:
- (a) a tensile modulus of at least about 20 g/denier;
- (b) a tensile strength of at least about 400,000 psig;
- and
- (c) an areal density at least about 0.5 lb/ft.sup.2 and said scrim comprises filaments of natural or synthetic fibers impregnated with a heat curable resin.
Dependencies are inferred from the claim text.