Ballistic resistant thermoplastic sheet, process of making and its applications

Patent metadata

Field	Value
Publication number	US-10494746-B2
Application number	US-201816001283-A
Country	US
Kind code	B2
Filing date	Jun 6, 2018
Priority date	Mar 15, 2013
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

Woven fabrics are formed from high tenacity fibers or tapes that are loosely interwoven with adhesive coated filaments, to composite articles formed therefrom, and to a continuous process for forming the composite articles.

First claim

What is claimed is:

1. A closed, fused multilayer article comprising:
a) a first sheet, which first sheet is both closed and fused, said first sheet comprising high tenacity elongate bodies interwoven and bonded with transversely disposed binding elongate bodies, said high tenacity elongate bodies comprising a thermoplastic polymer, said high tenacity elongate bodies having a tenacity of at least about 14 g/denier, wherein said high tenacity elongate bodies also have a tensile modulus of at least about 300 g/denier; and wherein said binding elongate bodies at least partially comprise a thermoplastic polymer having a melting temperature below a melting temperature of the high tenacity elongate bodies, the first sheet having substantially no gaps between adjacent high tenacity elongate bodies and wherein said adjacent high tenacity elongate bodies do not overlap; and
b) a second sheet, which second sheet is both closed and fused, said second sheet comprising high tenacity elongate bodies interwoven and bonded with transversely disposed binding elongate bodies, said high tenacity elongate bodies comprising a thermoplastic polymer, said high tenacity elongate bodies having a tenacity of at least about 14 g/denier, wherein said high tenacity elongate bodies also have a tensile modulus of at least about 300 g/denier; and wherein said binding elongate bodies at least partially comprise a thermoplastic polymer having a melting temperature below a melting temperature of the high tenacity elongate bodies, the second sheet having substantially no gaps between adjacent high tenacity elongate bodies and wherein said adjacent high tenacity elongate bodies do not overlap; and
wherein the high tenacity elongate bodies of the first sheet are oriented at a non-parallel angle relative to the high tenacity elongate bodies of the second sheet.

2. A closed, fused multilayer article of claim 1 wherein said first sheet and said second sheet are thermally fused together in the absence of an additional intermediate adhesive resin.

3. A ballistic resistant multi-layer article comprising a consolidated plurality of the closed, fused multilayer articles of claim 1 .

Assignees

• Honeywell Int Inc

Inventors

• Tam Thomas
• Boone Mark Benjamin
• Bhatnagar Ashok

Classifications

• Y10T428/24124

  Fibers · CPC title

• D03D1/0052 Primary

  Antiballistic fabrics · CPC title

• Y10T442/30

  Woven fabric [i.e., woven strand or strip material] · CPC title

• D10B2401/041

  thermoplastic; thermosetting · CPC title

• Y10T442/3146

  Strand material is composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material · CPC title