Composite for protection against wind and wind blown debris

Abstract

A composite suitable as an integral portion of a building affording protection from wind blown debris such as from a tornado comprises in order a layer of structural sheathing material such as plywood, a layer of adhesive, a lightweight material, a layer of adhesive, a layer of fabric of high strength fibers bonded resin, a layer of adhesive, and a layer of a structural sheathing material.

1 . A composite comprising in order: 
 (a) a layer of structural sheathing,    (b) a layer of adhesive,    (c) a layer of material having a density not greater than 0.25 grams per cubic centimeter,    (d) a layer of adhesive,    (e) a layer of a fabric containing high strength fibers bonded with a resin,    (f) a layer of adhesive,    (g) a layer of structural sheathing.    wherein the fabric layer will deflect in a range from 5.0 to 17.5 centimeters when impacted by a 6.8-kilogram (15 pound) projectile at a speed of 161 kilometers (100 miles) per hour in accordance with ASTM test procedure E1886-97.    
   
   
       2 . The composite of  claim 1  wherein the deflection is in a range from 8.0 to 16.0 centimeters.  
   
   
       3 . The composite of  claim 1  wherein the high strength fibers are selected from the group consisting of aramid fibers, glass fibers, polyethylene fibers, polyvinyl alcohol fibers, polyarylate fibers, polybenzazole fibers, or carbon fibers.  
   
   
       4 . The composite of  claim 1  wherein the high strength fibers comprise an aramid.  
   
   
       5 . The composite of  claim 1  wherein the high strength fibers are glass.  
   
   
       6 . The composite of  claim 1  wherein the structural sheathing comprises plywood.  
   
   
       7 . The composite of  claim 1  wherein layer (c) has a density not greater than 0.10 grams per cubic centimeter.  
   
   
       8 . The composite of  claim 1  wherein layer (c) is a foam.  
   
   
       9 . The composite of  claim 1  wherein layer (c) has a honeycomb or honeycomb-like structure.  
   
   
       10 . A building structure having an integral portion of the structure comprising: 
 (a) a layer of structural sheathing,    (b) a layer of adhesive,    (c) a layer of material having a density not greater than 0.25 grams per cubic centimeter,    (d) a layer of adhesive,    (e) a layer of a fabric containing high strength fibers bonded with a resin,    (f) a layer of adhesive.    wherein the fabric layer will deflect in a range from 5.0 to 17.5 centimeters when impacted by a 6.8-kilogram (15 pound) projectile at a speed of 161 kilometers (100 miles) per hour in accordance with ASTM test procedure E1886-97.