System, method and article of manufacture for ballistic shielding
A composite ballistic shielding material is formed utilizing ribbons of randomly-oriented film, laid up or woven in bias plies. The sheet plies are made narrow strips of PVC films are held side-by-side and rigidly framed as a square, into a thin layer, and then trimmed. The strips may be approximately 0.010″ wide. The formed up layer is then immersed in a low-hardness thermosetting liquid glue and laid down as a first ply. Subsequent plies are made by repeating the same process, and adding the step of rotating the frame to a pre-determined angle before laying down the ply onto the previous ply. When a pre-determined number of layers or a desired thickness is achieved, the lay-up is transferred to a press for curing into panels. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
1. A composite ballistic shielding comprising:
a plurality of individual layers, each said layer comprising a plurality of elongated film strips oriented side by side and affixed with a functional adhesive;
wherein adjacent said individual layers are oriented at a bias angle along an X-Y plane; and
a pressed and cured functional adhesive between and among said adjacent said individual layers, thereby forming a panel incorporating a z-axis dimensionality in a configuration of an array of dimples imparting a strategic strength and impact distribution matrix within the panel.
2. The composite ballistic shielding of claim 1 , wherein said narrow film strips are formed of a material having modulus of elasticity less than 25%.
3. The composite ballistic shielding of claim 1 , wherein said narrow film strips are formed from a polyvinyl chloride (PVC) film.
4. The composite ballistic shielding of claim 3 , wherein each said plurality of narrow film strips are less than approximately 0.020″ in width.
5. The composite ballistic shielding of claim 1 , wherein said bias angle is approximately 10° between layers.
6. The composite ballistic shielding of claim 1 , wherein said functional adhesive is a thermoset material.
7. The composite ballistic shielding of claim 6 , wherein said functional adhesive is selected from the group consisting of: flame-retardants; and, carbon nanotubes suspended in solution.
8. The composite ballistic shielding of claim 6 , wherein said elongated film strips are formed of a material having a higher tensile strength than said thermosetting adhesive (when cured).
9. A composite ballistic shielding panel comprising:
a plurality of individual layers oriented to each other at a sequential bias about an X-Y axis of approximately 10°;
each said individual layer comprising a plurality of elongated film strips formed of at least partially recycled material and oriented side by side; and
said plurality of individual layers pressed together and cured and affixed with a functional thermoset adhesive;
wherein as said plurality of individual layers are pressed together a panel is formed incorporating a z-axis dimensionality in a configuration of an array of dimples imparting a strategic strength and impact distribution matrix within the panel.
10. The composite ballistic shielding panel of claim 9 , wherein said narrow film strips are formed of a material having modulus of elasticity less than 25%.
11. The composite ballistic shielding panel of claim 10 , wherein said elongated film strips are formed from a PVC film.
12. The composite ballistic shielding panel of claim 10 , wherein each said plurality of elongated film strips are less than approximately 0.020″ in width.
13. The composite ballistic shielding panel of claim 9 , wherein said functional thermoset adhesive further comprises a functional additive material selected from the group consisting of: flame-retardants; and, carbon nanotubes suspended in solution.
14. The composite ballistic shielding panel of claim 13 , wherein said elongated film strips are formed of al material having a higher tensile strength than said functional thermoset adhesive (when cured).