MULTILAYER PLATE

Abstract

A multilayer plate comprising reinforcement layers made of metal or ceramic or glass or plastics, or of aramid, aramid-glass, glass or ultra-high-molecular-weight polyethylene (UHMWPE) fabric, or made of a combination thereof and shock absorbing layers, wherein the shock absorbing layer is made of cork while the layers are secured to one another permanently. The multilayer plate has a shock absorbing layer preferably made of cork agglomerate or expanded cork or a compound of cork and other elastic substances or a compound of cork and rubber or a compound of cork and polyurethane or a compound of cork and rubber and polyurethane. The plate may comprise a shock absorbing layer which internally contains additional spatial shock absorbing layers, preferably corrugated, or trapezoid-, triangular-, cubic- or honeycomb-shaped. The reinforcement layer is preferably mace of aluminum or duralumin or titanium or armor steel. The layers are secured to one another permanently by gluing or thermoplastic bonding or lamination or pressing or by using the RTM infusion or LRTM infusion methods or the CCBM process.

Claims

1. A multilayer plate comprising reinforcement layers made of metal or ceramic or glass or plastics, or of aramid, aramid-glass, glass or ultra-high-molecular-weight polyethylene (UHMWPE) fabric, or made of a combination thereof and shock, absorbing layers, wherein the shock absorbing layer is made of cork while the layers are secured to one another permanently.

2. The multilayer plate according to claim 1, characterized in that the shock absorbing layer is preferably made of cork agglomerate.

3. The multilayer plate according to claim 1, characterized in that the shock absorbing layer is preferably made of expanded cork.

4. The multilayer plate according to claim 1, characterized in that the shock absorbing layer is made of a compound of cork and other elastic substances.

5. The multilayer plate according to claim 1, characterized in that the shock absorbing layer is preferably made of a compound of cork and rubber.

6. The multilayer plate according to claim 1, characterized in that the shock absorbing layer is preferably made of a compound of cork and polyurethane.

7. The multilayer plate according to claim 1, characterized in that the shock absorbing layer is preferably made of a compound of cork and rubber and polyurethane.

8. The multilayer plate according to claim 1, characterized in that the shock absorbing layer contains internally additional spatial shock absorbing layers, preferably corrugated, or trapezoid-, triangular-, cubic- or honeycomb-shaped.

9. The multilayer plate according to claim 1, characterized in that the reinforcement layer is preferably made of aluminum.

10. The multilayer plate according to claim 1, characterized in that the reinforcement layer is preferably made of duralumin.

11. The multilayer plate according to claim 1, characterized in that the reinforcement layer is preferably made of titanium.

12. The multilayer plate according to claim 1, characterized in that the reinforcement layer is preferably made of armor plate.

13. The multilayer plate according to claim 1, characterized in that the layers are preferably secured to one another by gluing.

14. The multilayer plate according to claim 1, characterized in that the layers are preferably secured to one another by thermoplastic bonding.

15. The multilayer plate according to claim 1, characterized in that the layers are preferably secured to one another by lamination.

16. The multilayer plate of claim 1, characterized in that the layers are preferably secured to one another by pressing.

17. The multilayer plate according to claim 1, characterized in that the layers are preferably secured to one another using the RTM infusion method.

18. The multilayer plate according to claim 1, characterized in that the layers are preferably secured to one another using the LRTM infusion method.

19. The multilayer plate according to claim 1, characterized in that the layers are preferably secured to one another using the CCBM process.

Description

[0008] The subject of the invention is shown in its embodiments and in drawings, where FIG. 1 shows, respectively, a cross-section of the plate with the application of many layers, FIG. 2 shows a cross-section of the titan-cork version of the plate, FIG. 3 shows, respectively, a cross-section of the plate with an additional spatial shock absorbing layer, and FIG. 4 shows a cross-section of the titan-cork version of the plate with the application of an aramid layer, bend-shaped.

[0009] In the first embodiment of the multilayer plate as per present invention, in order from the outer side inwards, there is a reinforcement layer made of glass 1, to which another reinforcement layer made of aramid fabric 2 is bonded, to which a shock absorbing layer made of cork 3 is bonded, to which subsequently another reinforcement layer made of titanium 4 is bonded, to which subsequently another layer of cork 3, another layer of titanium 4, and then the last layer of cork 3 and the last layer of titanium 4 are bonded. The plate is characterized by high resistance to puncture. All the layers are secured to one another permanently with the use of glue.

[0010] In the second embodiment of the multilayer plate as per present invention, in order from the outer side inwards, there is a reinforcement layer made of titanium 4, to which a shock absorbing layer made of cork 3 is glued. This combination of layers is then repeated three times, where the last layer is again made of titanium 4. This plate is characterized by a very low net unit weight and, at the same time, maintains high resistance to puncture, for up to 7.62 mm caliber inclusive. All the layers are secured to one another permanently with the use of glue.

[0011] In the third embodiment of the multilayer plate as per present invention, in order from the outer side inwards, there is a reinforcement layer made of glass 1, to which a reinforcement layer made of aramid fabric 2 is bonded, to which another reinforcement layer made of titanium 4 is bonded. To this layer, a spatial shock absorbing layer made of polyurethane 6 is bonded, the free spaces of which are filled on the one side with a shock absorbing-layer 3 made of cork, and on the other side with a shock absorbing layer 5 made of a compound of cork and rubber. Subsequently, the combination of the titanium 4cork 3 layers is repeated twice, where the last layer is again made of titanium 4. All the layers are secured to one another permanently with the use of glue.

[0012] In the fourth embodiment of the multilayer plate as per present invention, in order from the outer side inwards, there is a reinforcement layer in its rounded version to protect convex elements. The outer layer of the reinforcement comprises a layer of titanium 4 and aramid 2, and then a combination of cork 3titanium 4 layers is repeated three times. All the layers are secured to one another permanently with the use of infusion. The lamination process can be used, as well.

[0013] The plate manufactured as per foregoing embodiments has a substantially lower unit weight than a plate made of steel. The plate can be built in such a manner that titanium can be replaced with aluminum or duralumin, preferably with the addition of aramid fabric.