Multidirectional fiber-reinforced tape/film articles and the method of making the same
AssigneeHoneywell International Inc.
InventorsTHOMAS TAM, MARK BENJAMIN BOONE
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Abstract
High tenacity, high elongation multi-filament polymeric tapes as well as ballistic resistant fabrics, composites and articles made therefrom. The tapes are fabricated from multi-filament fibers/yarns that are twisted together, bonded together, compressed and flattened.
Claims21
1-20. (canceled)
An article fabricated from a plurality of polymeric tapes, wherein each of said polymeric tapes comprises a flattened multi-filament yarn, said yarn comprising a plurality of continuous polymeric filaments that are twisted together and bonded together;
- which tapes have an ultimate tensile strength of at least 15 g/denier and wherein the value of the ultimate tensile strength (g/denier) of each tape multiplied by the ultimate elongation (%) of each tape is at least 150.
An article fabricated from a plurality of polymeric tapes, wherein each of said polymeric tapes comprises a flattened multi-filament yarn, said yarn comprising a plurality of continuous polymeric filaments that are twisted together and bonded together;
- wherein said tape has an ultimate elongation (y) (%) and an ultimate tensile strength (x)(g/denier) that are proportional to each other and conform to the relationship y=−0.04x+b, where b=5 or greater and x is 15 or greater.
A process for forming a layer comprising a plurality of polymeric tapes, the method comprising:
- a) providing a plurality of polymeric tapes, each polymeric tape comprising a flattened multi-filament yarn, said yarn comprising a plurality of continuous polymeric filaments that are twisted together and bonded together with at least about 3 twists per inch of yarn length and less than about 15 twists per inch of yarn length, wherein the polymeric tape has an average cross-sectional aspect ratio of at least about 10:1;
- b) arranging said plurality of polymeric tapes into a side-by-side planar array such that only their edges are in contact with each other;
- c) optionally applying a polymeric binder material onto said array of tapes;
- and
- d) applying heat and/or pressure to said array of tapes under conditions sufficient to consolidate said array of tapes into a substantially planar, unitary layer.
Dependencies are inferred from the claim text.