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Ballistic Fabric

a technology of fabric and ballistics, applied in protective fabrics, shutters/movable grilles, weaving, etc., can solve the problems of plant or house collapse, huge and deadly storms, and people within the building being injured or killed by flying glass, etc., to improve ballistic properties, less impact deformation, and additional strength

Inactive Publication Date: 2008-10-09
ALBANY INT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]Briefly the invention relates to a flexible fabric, for example a roll-up shutter with improved ballistic properties. More specifically, the present invention is directed to a ballistic fabric that is formed containing unique cabled yarns. The unique cabled yarn may be a metal reinforced aramid yarn giving the fabric additional strength, and allowing less impact deformation.
[0019]Another embodiment is directed to a ballistic fabric made from cabled metal reinforced aramid yarns that have enhanced ballistic properties and may be used in industrial applications such as industrial plant doors, shutters or coverings.
[0020]Yet another embodiment of the present invention is directed to a hurricane shutter made from cabled metal reinforced aramid yarns and has improved flexibility as well as enhanced ballistic properties.
[0023]Yet another embodiment of the present invention is directed to a ballistic fabric made from yarns with aramid strands that are used as a core material within a thermoplastic sheath. As with the use of the cabled steel, the thermoplastic sheath allows for the maximum strength of the aramid core to be realized, protects the aramid from abrasion / cutting, maintains diameter uniformity, and allows for crimp generation via plastic deformation of the sheath.
[0024]Yet another embodiment of the present invention is directed to a hurricane shutter made from yarns comprising aramid strands that are used as a core material within a thermoplastic sheath, which shutter has improved flexibility as well as enhanced ballistic properties.

Problems solved by technology

Often times such openings are covered with breakable glass, and during a storm when a loose object, such as a tree limb or the like, is blown into the glass covering the opening, there is a danger that people within the building will be injured or killed by the flying glass.
For example, the states along the Gulf of Mexico, during certain times of the year, are prone to enormous and deadly storms known as hurricanes.
Most of the damage in hurricanes is caused by the air blowing into the premises through the broken windows and shutters, which then lifts off the roof and can cause the plant or house to collapse.
Rolling doors of this type can be moved only slowly because they have mechanical hinges and produce unwanted, sometimes shrieking noises when they are moved.
These rolling doors are susceptible to damage during everyday operation, particularly due to impacts from vehicles, such as, stacker trucks.
The repair of the damage is complicated because deformed pans, such as, steel lamellas, are difficult to replace.
However, the major disadvantage of these high-speed doors is the necessary complicated mechanism because the highly flexible materials used in the doors are not capable of transmitting thrust or pushing forces.
This set up, however, is not mechanically stable to withstand the damage caused due to the impact of a hurricane storm.
The curtain in this case also does not have sufficient impact resistance to withstand the colossal impact due to a storm.
This patent discloses that the elements can be formed of either textile or metal fibers, in which case, the closing element is either too flimsy or too stiff and does not provide the essential ballistic properties required in a door closing.
This property, however, is not useful in instances where the debris impacts the building surface at high speeds.
However, as a result of the stranded nature of aramid materials, producing wide width (1-12 m) panels of open mesh designs for protection of large objects like windows for housing, office, or business store fronts is often not feasible.
Yarns produced of aramid strands tend to dimensionally flatten during weaving producing a fabric with little open area / porosity and poor dimensional stability as a result of the lack of crimp in the aramid yarns.
Additionally, aramid yarns are difficult to weave as the individual strands that make up an aramid yarn, while having good tensile strength tend to abrade resulting in continuous breaks across the width during weaving.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

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Embodiment Construction

[0032]It is noted that in this disclosure and particularly in the claims and / or paragraphs, terms such as “comprises,”“comprised,”“comprising,” and the like can have the meaning attributed to it in U.S. patent law; that is, they can mean “includes,”“included,”“including,”“including, but not limited to” and the like, and allow for elements not explicitly recited. Terms such as “consisting essentially of” and “consists essentially of” have the meaning ascribed to them in U.S. patent law; that is, they allow for elements not explicitly recited, but exclude elements that are found in the prior art or that affect a basic or novel characteristic of the invention. These and other embodiments are disclosed or are apparent from and encompassed by, the following description.

[0033]Aramid based ballistic cloth / fabric have a well established application as a protective barrier (bullet proof vests, military vehicle body armor, aircraft engine containment, etc.) and therefore may be used in this a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

Briefly the invention relates to a flexible fabric for use as for example in a roll-up shutter with improved ballistic properties. More specifically, the present invention is directed to a ballistic fabric that is formed from a unique cabled yarn and allows less deformation on impact. The unique cabled yarn may be a metal reinforced aramid yarn for giving the fabric additional strength.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority benefits of U.S. Provisional Patent Application Ser. No. 60 / 874,108 filed Dec. 11, 2006 entitled “Ballistic Fabric”, the disclosure of which is incorporated herein by reference.BACKGROUND[0002]1. Field of the Invention[0003]This invention relates generally to flexible fabrics with improved ballistic properties. More specifically, the present invention is directed to a ballistic fabric that is formed from a unique cabled yarn and allows less deformation on impact.[0004]2. Background Discussion[0005]In south-east states like Florida and Louisiana, there is a need for protecting the openings of buildings such as windows and doors and other means of access, especially after looking at the aftermath of Hurricanes Charlie and Katrina. Often times such openings are covered with breakable glass, and during a storm when a loose object, such as a tree limb or the like, is blown into the glass covering the opening, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D03D15/00
CPCD02G3/047D02G3/12D02G3/442D03D1/0052D03D15/02D10B2101/20D10B2331/021E06B9/13Y10T442/3065Y10T442/3049
Inventor PEACOCK, DAVID S.LEVINE, MARK
Owner ALBANY INT CORP
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