Stab and ballistic resistant articles and the process of making

Patent metadata

Field	Value
Publication number	US-10703069-B2
Application number	US-201916377332-A
Country	US
Kind code	B2
Filing date	Apr 8, 2019
Priority date	Mar 15, 2013
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

Dimensionally stable open woven fabrics formed from a plurality of high tenacity warp elongate bodies interwoven and bonded with a plurality of transversely disposed, high tenacity weft elongate bodies, composite articles formed therefrom, and to a continuous process for forming the composite articles.

First claim

What is claimed is:

1. A process for forming a dimensionally stable open fabric, the process comprising:
a) providing a woven fabric comprising a plurality of warp elongate bodies interwoven and bonded with a plurality of transversely disposed weft elongate bodies, said warp elongate bodies and weft elongate bodies each comprising thermoplastic high tenacity elongate bodies having a tenacity of at least about 14 g/denier and a tensile modulus of at least about 300 g/denier, wherein adjacent warp elongate bodies are spaced apart from each other by a distance equivalent to at least about 10% of the width of the warp elongate bodies and adjacent weft elongate bodies are spaced apart from each other by a distance equivalent to at least about 10% of the width of the weft elongate bodies;
b) at least partially melting the thermoplastic polymer of the high tenacity warp elongate bodies and/or the high tenacity weft elongate bodies; and
c) allowing the melted thermoplastic polymer of the high tenacity warp elongate bodies and/or the high tenacity weft elongate bodies to solidify, whereby the high tenacity warp elongate bodies and the high tenacity weft elongate bodies are bonded to each other, thereby forming a dimensionally stable open fabric.

2. The process of claim 1 wherein adjacent warp elongate bodies are spaced apart from each other at their nearest longitudinal edges by more than 1 mm and adjacent high tenacity weft elongate bodies are spaced apart from each other at their nearest longitudinal edges by more than 1 mm.

3. The process of claim 1 wherein each of said warp elongate bodies and said weft elongate bodies comprise polyolefin fibers.

4. The process of claim 3 wherein each of said warp elongate bodies and said weft elongate bodies comprise polyethylene fibers.

5. The process of claim 4 wherein each of said warp elongate bodies and said weft elongate bodies comprise ultra-high molecular weight polyethylene fibers.

6. The process of claim 1 wherein each of said warp elongate bodies and said weft elongate bodies comprise multifilament polyolefin tapes.

7. The process of claim 6 wherein each of said warp elongate bodies and said weft elongate bodies comprise multifilament polyethylene tapes.

8. The process of claim 7 wherein each of said warp elongate bodies and said weft elongate bodies comprise multifilament ultra-high molecular weight polyethylene tapes.

Assignees

• Honeywell Int Inc

Inventors

• Tam Thomas
• Boone Mark Benjamin
• Bhatnagar Ashok

Classifications

• D03D15/587

  adhesive; fusible · CPC title

• D03D15/573

  Tensile strength · CPC title

• D03D15/283

  synthetic polymer-based, e.g. polyamide or polyester fibres (cellulose-based artificial fibres D03D15/225) · CPC title

• D03D15/43

  with differing diameters · CPC title

• F41H1/02

  Armoured or projectile- or missile-resistant garments; Composite protection fabrics {(F41H5/04 takes precedence)} · CPC title