Bullet proof laminate and trauma pack
View Patent ↗The invention relates to a trauma pack comprising at least one panel of a plastic material and at least one textile fabric layer affixed to the panel and made of yarns with fibers having a tensile strength of at least 900 MPa, wherein the plastic material of the panel is a self-reinforced thermoplastic material made of filaments, fibers, tapes or strips of a polyolefin polymer, and wherein at least one textile fabric layer is bonded over its entire surface to the self-reinforced thermoplastic material.
1. A trauma pack comprising at least one panel of a hot compacted, self-reinforced thermoplastic material and at least one woven textile fabric layer bonded over at least one complete surface to the panel by hot compaction,
wherein the textile fabric layer comprises yarns with fibres having a tensile strength of at least 900 MPa,
wherein the panel of hot compacted, self-reinforced thermoplastic material comprises a plurality of fabric layers made from filaments, fibres, tapes or strips of polyolefin polymer,
wherein the plurality of fabric layers made from filaments, fibres, tapes or strips of polyolefin polymer and the woven textile fabric layer are in close contact with one another and are simultaneously hot compacted and bonded to one another at elevated temperature and pressure.
2. The trauma pack according to claim 1 , wherein the polyolefin polymer is an oriented polyolefin polymer.
3. The trauma pack according to claim 1 wherein the polyolefin polymer is selected from the group consisting of a polypropylene homopolymer, a copolymer containing mainly polypropylene, a polyethylene homopolymer, a copolymer containing mainly polyethylene, and mixtures thereof.
4. The trauma pack according to claim 1 , further comprising a thermoplastic film situated in between the woven textile fabric and the hot compacted, self-reinforced, thermoplastic material.
5. The trauma pack according to claim 1 comprising at least two panels of a hot compacted, self-reinforced thermoplastic material having at least one woven textile fabric layer bonded over one complete surface of each panel by hot compaction at elevated pressure and temperature.
6. The trauma pack according to claim 1 wherein the fibres of the woven textile fabric layer having a tensile strength of at least 900 MPa are selected from the group consisting of aramid, polyethylene of ultrahigh molecular weight, polypropylene of ultrahigh molecular weight, polyvinyl alcohol, polyacrylonitrile, polybenzoxazole, polybenzothiazole and glass fibres.
7. The trauma pack according to claim 1 wherein the panel of hot compacted, self-reinforced thermoplastic material bonded by hot compaction to the woven textile fabric layer has a diagonal elongation of 5 to 15%.
8. The trauma pack according to claim 1 wherein the pack is inserted behind or between a plurality of layers made of yarns with fibres having a tensile strength of at least 900 MPa.
9. The trauma pack according to claim 1 placed behind a plurality of layers of woven textile fabric made of yarns with fibres having a tensile strength of at least 900 MPa.
10. The use of the trauma pack according to claim 1 for production of items of body armour.
11. The use of the trauma pack according to claim 1 for production of bullet-proof vests.
12. The trauma pack according to claim 1 comprising at least one panel of a hot compacted, self-reinforced thermoplastic material having at least one textile fabric layer bonded over the complete top and bottom surfaces of the panel by hot compaction at elevated pressure and temperature.
13. The trauma pack according to claim 1 comprising more than one panel of a hot compacted, self-reinforced thermoplastic material having at least one textile fabric layer bonded over its entire surface on both sides of each panel by hot compaction at elevated pressure and temperature.