Projectile Trap Material With Improved Trapping Behavior For Projectiles

Abstract

A projectile trap composition comprising 10% to 100% by weight of metallocene polyolefin wax and/or its derivatives. The projectile trap composition of the present invention has high permeability for projectiles with self-healing behavior and it effects the complete deceleration of impacting projectiles in a system of different plates and in some instances additionally a section of projectile trap composition granules.

1 . A projectile trap composition for trapping fired projectiles, comprising 10% to 100% by weight of a metallocene polyolefin wax, based on the total weight of the projectile trap composition. 
     
     
         2 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax is a homopolymer of propylene or a copolymer of propylene with ethylene or with one or more 1-olefins having 4 to 18 carbon atoms. 
     
     
         3 . The projectile trap composition as claimed in  claim 1 , further comprising from 0% to 90% by weight of an additive, auxiliary material or mixture thereof. 
     
     
         4 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax is present in an amount ranging from 90% to 100% by weight. 
     
     
         5 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax has a drop point in the temperature range between 80 and 150° C. and a melt viscosity in the range from 20 to 40 000 mPa·s, measured at 170° C. 
     
     
         6 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax has a drop point in the temperature range between 85 and 115° C. and a melt viscosity in the range from 100 to 7000 mPa·s, measured at 170° C. 
     
     
         7 . The projectile trap composition as claimed in  claim 1 , further comprising other waxes, resins, antioxidants, light stabilizers, flame retardants, fillers, pigments or dyes. 
     
     
         8 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax is at least partially functionalized. 
     
     
         9 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax is at least partially grafted with maleic anhydride. 
     
     
         10 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax is at least partially crosslinked via functional groups. 
     
     
         11 . A front disk in bullet-trapping system or a safety construction against ricochets, including ricochets in the direction of the shooter comprising a projectile trap composition as claimed in  claim 1 . 
     
     
         12 . A trapping material for fired projectiles which has improved ability to retain harmful materials comprising a projectile trap composition as claimed in  claim 1 . 
     
     
         13 . A material for completely stopping fired projectiles in the rearward region of bullet-trapping system comprising a projectile trap composition as claimed in  claim 1 . 
     
     
         14 . A method of recycling a projectile trap composition as claimed in  claim 1 , comprising the step of separating the projectile trap composition being from a decelerated projectile by slurrying in water or by melting and filtering. 
     
     
         15 . The projectile trap composition as claimed in  claim 1 , wherein the metallocene polyolefin wax is at least partially functionalized by oxidation or by functionalization with alpha,beta-unsaturated carboxylic acids.