Bulletproof fabric and body armor manufactured by using same

Abstract

The present invention discloses a bulletproof fabric and a body armor manufactured using the same. The bulletproof fabric includes an aramid fabric 10 including wholly aromatic polyamide multifilaments as warps and wefts, a primary water-repellent coating layer 20 formed on the aramid fabric 10, and a secondary water-repellent coating layer 30 formed on the primary water-repellent coating layer 20. The body armor of the present invention has a laminate structure of stacking up 10 to 50 sheets of the above bulletproof fabrics, preferably, further includes an aramid composite pad 40 inserted in a pocket provided at a part of the body armor. According to the present invention, water-repellent properties are excellent to noticeably improve bulletproof performance in a wet state, and specifically, when the body armor has the aramid composite pad 40 inserted therein, rear deformation of the body armor after the bulletproof performance test is considerably reduced.

1 . A bulletproof fabric, comprising: an aramid fabric  10  including wholly aromatic polyamide multifilaments as warps and wefts; a primary water-repellent coating layer  20  formed on the aramid fabric  10 ; and a secondary water-repellent coating layer  30  formed on the primary water-repellent coating layer  20 . 
     
     
         2 . The bulletproof fabric according to  claim 1 , wherein the primary water-repellent coating layer  20  is a resin layer containing fluorocarbon. 
     
     
         3 . The bulletproof fabric according to  claim 1 , wherein the secondary water-repellent coating layer  30  is a polyurethane resin layer including micro-pores formed therein. 
     
     
         4 . A body armor manufactured by laminating 10 to 50 sheets of bulletproof fabric, wherein the fabric includes: an aramid fabric  10  including wholly aromatic polyamide multifilaments as warps and wefts; a primary water-repellent coating layer  20  formed on the aramid fabric  10 ; and a secondary water-repellent coating layer  30  formed on the primary water-repellent coating layer  20 . 
     
     
         5 . The body armor according to  claim 4 , wherein bulletproof performance in a wet state satisfies VO standards of the National Institute of Justice (NIJ) 3A. 
     
     
         6 . The body armor according to  claim 4 , wherein an aramid composite pad  40  is inserted in a pocket provided at apart of the body armor. 
     
     
         7 . The body armor according to  claim 6 , wherein the aramid composite pad  40  has a structure in which a first aramid prepreg X is heat-pressed with a second aramid prepreg Y to form an integrated laminate, wherein the first aramid prepreg X includes a high-strength aramid fabric A and a resin C impregnated therein while the second aramid prepreg Y includes a high-elastic aramid fabric B and a resin C impregnated therein, and the high-strength aramid fabric A includes wholly aromatic polyamide multifilaments having an overall fineness of the warps and wefts in a range of 500 to 1,000 denier while the high-elastic aramid fabric B includes wholly aromatic polyamide multifilaments having an overall fineness of the warps and wefts in a range of 840 to 3,000 denier. 
     
     
         8 . The body armor according to  claim 6 , wherein rear deformation of the body armor at a bulletproof performance test according to NIJ standards is within 40 mm.