Protective resistant composite material and projectile resistant composite body formed therefrom
AssigneeHyperlast Limited
InventorWilliam Sharples
Life of this patent
Estimating the term…
Abstract
A composite material resistant to armour piercing bullets consisting of a highly elastic polyurethane matrix into which is embedded aggregate, preferably in the form of rounded pebbles having an average screened size range of from about 20 mm to about 60 mm.
Claims17
A composite material for use in making a projectile resistant body, the material comprising an elastic polyurethane matrix having an elongation at break-point of at least 550%;
- one portion of said matrix including a stone aggregate comprising rounded pebbles in a size range above 20 mm in diameter embedded in said matrix;
- and
- another portion of said matrix including an aggregate-free anti-spalling layer.
A projectile resistant body comprising a composite material, said material comprising an elastic polyurethane matrix having an elongation at break-point of at least 550%;
- said body including a stone aggregate portion comprising rounded pebbles in a size range above 20 mm diameter embedded in said matrix, said body also including an aggregate-free anti-spalling layer on at least one exterior side of the body.
A method of making a projectile resistant body, the method comprising the steps of:
- placing a stone aggregate comprising rounded pebbles in a size range above 20 mm diameter into a mold;
- pouring a polyurethane resin forming mixture into the mold to embed the stone aggregate in the resin, said resin being added to the mold in an amount to cover said aggregate and further form an aggregate-free layer to comprise an anti-spalling layer;
- and
- curing the resin to form a polyurethane resin matrix with an elongation at break-point of at least 550%.
Dependencies are inferred from the claim text.