Hard-ballistic article and process to manufacture said article

Inactive Publication Date: 2016-01-28
TEIJIN TWARON GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]The ballistic articles described above exhibit a good ballistic performance. However, there is an ongoing demand for ballistic articles which at the same areal density have a better ball

Problems solved by technology

US 2012/0174753 A1 describes soft body armor and explains that the flexible and soft body armor of the application of this document is in contrast to rigid or hard armor and therefore, does not retain its shape when subjected to a significant a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Hard-Ballistic Article with Ceramic Front Plate and Hybrid Panel

[0113]a) Manufacture of a Single Unidirectional Fibrous Layer (1L-UD)

[0114]Poly(p-phenylene terephthalamide) multifilament yarns (Twaron type 1000; 3360 dtex f2000; Manufacturer: Teijin Aramid, NL) were taken from a creel and passed through a reed thus aligned substantially parallel to one another. The substantially parallel aligned yarns were coated with a pre-diluted aqueous carboxylated styrene butadiene random copolymer latex dispersion (Rovene® 4019, manufactured by Mallard Creek Polymers, USA, solid content=52.0 to 54.0 wt.-%, viscosity=580 cps (Brookfield, spindle LV-2, 20 rpm, 25° C.); Tg=+14° C., bound styrene=62 %;) using a reverse roll coater. The pre-diluted latex dispersion was obtained by diluting Rovene® 4019 to a solid content of 25 wt.-% using tap water. The Rovene® 4019 coated yarns were spread on a series of spreader bars and laid up on a silicone coated release paper and dried by passing over a hot-p...

example 2

Hard-Ballistic Article Only with Hybrid Panel

[0139]Example 2 differs from example 1 only in that[0140]instead of 15 2L-UD cross-plies 16 2L-UD cross plies were used,[0141]instead of 7 one-side Neoprene-impregnated woven fabrics 8 one-side Neoprene-impregnated woven fabrics were used, and[0142]no ceramic front plate was joined to the hybrid panels.

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PUM

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Abstract

A hard-ballistic article and a method to manufacture the article are provided. The hard ballistic article includes a hybrid panel, wherein the hybrid panel includes
a) a first package of a plurality of consolidated cross-plies, wherein each consolidated cross-ply contains at least two layers of unidirectional aligned aramid fibers, wherein the aramid fibers are provided with a first matrix material, wherein the first matrix material includes a first polymer, wherein the first package exhibits a surface facing to the direction of a ballistic attack and a surface facing away from the direction of the ballistic attack, and
(b) a second package containing a plurality of woven fabric layers, wherein the woven fabric layers include aramid fibers provided with a second matrix material, wherein the second matrix material is different from the first matrix material, wherein the second matrix material comprises a second polymer, wherein the second polymer is different from the first polymer,
wherein the first package is bonded with its surface facing away from the direction of the ballistic attack with the second package.

Description

BACKGROUND[0001]1. Field Of The Application[0002]The present application pertains to a hard-ballistic article and to a process to manufacture said article.[0003]2. Related Art[0004]Hard-ballistic articles are known which contain packages of woven fabric layers or packages of non-woven fabric layers. Said packages are stacked onto one another to form a monolithic panel. Furthermore, hard-ballistic articles are known which contain packages of woven fabric layers and packages of non-woven fabric layers. Said packages are stacked onto one another to form a hybrid panel.[0005]WO 2008 / 097362 A describes multilayer ballistic resistant articles which provide suitable protection against high energy ballistic threads, while remaining suitable for flexible vest applications. Said multilayer ballistic resistant articles are formed from a combination of flexible and semi-rigid panel components. The flexible or semi-rigid panels may include woven fibrous layers, non-woven fibrous layers or both. ...

Claims

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Application Information

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IPC IPC(8): F41H5/04
CPCF41H5/0471F41H5/0457F41H5/0428F41H5/0485F41H5/04
Inventor KWINT, HUIBERTDE HAAS, MARC-JANGABRISCH, HANS-JOACHIM
Owner TEIJIN TWARON GMBH
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