Flexible composite systems and methods
In various embodiments, an improved flexible-composite material is described that comprises at least one scrim constructed from at least two unidirectional tape layers bonded together and at least one woven fabric, non-woven fabric, or membrane bonded to the scrim. In various embodiments, the unidirectional tape layers comprise a plurality of parallel fiber bundles comprising monofilaments within an adhesive resin. In various embodiments, the fiber bundles are separated by gaps that can be filled in by adhesive or non-adhesive resin.
1. A flexible-composite material comprising:
at least one scrim, said scrim comprising two or more unidirectional tape layers laid in a side by side pattern; and
two or more additional layers comprising at least one of a film or fabric, said additional layers disposed on both sides of said scrim,
wherein each of said unidirectional tape layers comprise a plurality of parallel yarns, each of said yarns comprising a bundle of monofilaments in an adhesive resin, wherein the yarns are separated at from about 0.2 yarns/cm to about 4 yarns/cm by adhesive and fiber free gaps, and wherein said adhesive free gaps are filled with a non-breathable adhesive.
2. The flexible-composite material of claim 1 , wherein said fabric is a non-woven fabric.
3. The flexible-composite material of claim 1 , wherein said film is any one of PET, PEN, Nylon, fluoro-polymer, and urethane.
4. The flexible-composite material of claim 1 , further comprising at least one non-impregnated fabric, wherein said non-impregnated fabric is: (a) laminated to one or both sides of said flexible-composite material, (b) disposed between any two of said two or more unidirectional tape layers, or (c) disposed between one of said two or more additional layers and said scrim.
5. The flexible composite material of claim 1 , wherein said monofilaments comprise ultra-high molecular weight polyethylene.
6. A flexible-composite material comprising:
at least one scrim further comprising at least two gapped unidirectional tape layers bonded together at a bias;
wherein said gapped unidirectional tape layers each comprise a plurality of parallel yarns comprising monofilaments in an adhesive resin;
wherein said yarns are overspread such that the yarns are separated by adhesive and fiber free gaps, said gaps filled with a non-breathable adhesive;
wherein said monofilaments have diameters less than about 60 microns; and
wherein spacing between individual monofilaments within an adjoining strengthening group of monofilaments is within a gap distance in the range between abutting and/or stacked monofilaments up to about 300 times the monofilament major diameter.
7. The flexible-composite material of claim 6 , further comprising at least one non-woven fabric or film bonded to said at least one scrim.
8. The flexible-composite material of claim 7 , wherein said film is any one of PET, PEN, Nylon, fluoro-polymer, and urethane.
9. The flexible-composite material of claim 7 , further comprising at least one non-impregnated fabric, wherein said non-impregnated fabric is (a) laminated to one or both sides of said flexible-composite material, (b) disposed between said at least two gapped unidirectional tape layers, or (c) disposed between said woven fabric, random non-woven fabric, oriented non-woven fabric, film, or membrane and said scrim.
10. A method of manufacturing the flexible-composite material of claim 7 , said method comprising:
providing at least two gapped unidirectional tape layers bonded together to form at least one scrim; and
bonding at least one woven fabric, random non-woven, oriented non-woven fabric, film and membrane layer onto said at least one scrim layer.
11. The method of claim 10 , wherein said scrim layer comprises at least two gapped unidirectional tape layers further comprising a plurality of parallel fiber bundles comprising monofilaments in an adhesive resin, wherein said fiber bundles are separated by adhesive and fiber free gaps.
12. The method of claim 10 further comprising the step of removing select monofilaments from one or more of said unidirectional tape layers to create and/or to augment said gaps.
13. The method of claim 10 , wherein said scrim layer comprises a commercially available woven or non-woven reinforcement laid scrim.
14. The method of claim 11 , further comprising the step of adding a breathable or non-breathable adhesive to fill said gaps.
15. The flexible-composite material of claim 6 , wherein said scrim comprises a construction pattern selected from the group consisting of side-by-side, over/under, tri-directional, and quad-directional.
16. The flexible-composite material of claim 6 , wherein said monofilaments comprise ultra-high molecular weight polyethylene.
17. The flexible composite material of claim 6 , wherein said monofilaments comprise ultra-high molecular weight polyethylene.