Patent ID: 7954416
Filing Date: 2011-06-07
Classification: F41H

Abstract:
1. A bullet-proof structure comprising a first layer ( 2 ), a second layer ( 3 ), and a third layer ( 3 ′), the first layer being located between the second and third layers, each of the second and third layers being coated on the first layer, the first layer being effectively resistant to penetration of a fired bullet, the first layer comprising a material selected from the group consisting of alumina, bullet-proof glass, boron carbide, aramidic fiber, ceramics, steel, and mixtures of these materials, the second layer being a thermoplastic material having a melting point between 200 and 300° C., the second layer having a mean thickness in the range of 5 to 50 mm, the third layer being a thermoplastic material having a melting point between 200 and 300° C., wherein the first layer ( 2 ) comprises a first resistant layer ( 31 ) which, at least on the side of an incoming bullet ( 4 ), is matched with a second resistant layer ( 30 ) comprising a material selected from polyamides, polyurethane, polypropylene, polyvinyl chloride and derivatives of these materials, and said second layer ( 3 ) comprises a thermoplastic material of the same category as the second resistant layer ( 30 ) in order to improve the mutual adhesion between the first layer ( 2 ) and the second layer ( 3 ).