Excerpted from the 2001 NIJ Report "The Selection and Application of Body Armor" - http://www.nlectc.org/
Note: Body Armor should be cared for and handled as specified by the documentation you received from the manufacturer when you purchased your body armor. The below information should be used as a guide, but not as a replacement for that information.
The proper care of today''s modern body armor requires taking precautions
when cleaning the garment. Every model of armor that complies with NIJ
standards has an instruction label indicating how to clean the components.
Individuals should follow these instructions, making certain that anyone
else who cares for the garment is also aware of the correct cleaning
procedures.
The protective panels, or inserts, of body armor should be washed by hand
with cold water, using a sponge or soft cloth and mild home laundry
detergent. Most manufacturers strongly recommend that the protective
panel never be submerged in water. Bleach (including nonchlorine or
peroxide-based bleach) or starch, even when highly diluted, should not be
used as these may reduce the garment''s level of protection. If a model of
armor has a removable carrier, it is possible that the carrier may be
machine washable. However, it is imperative to follow the manufacturer''s
care instructions found on the protective panel and carrier labels.
Body armor panels or inserts are not to be machine washed or dried, either
in the home or commercially. The fabric can be damaged by laundry
equipment, ultimately affecting its performance. Commercial laundries
also use commercial detergents, which are much harsher than home
detergents, and pose another threat to maintaining the ballistic- or
stab-resistant properties of the fabric. According to DuPont,
perchlorethylene is the only drycleaning solvent found so far that does not
significantly degrade the ballistic protection provided by current body
armor.[21] However, to eliminate the possibility of an accident and avoid
the variety of drycleaning solvents in use, drycleaning armor is not
recommended.
Most modern body armor contains water-repellant treated or inherently
water-repellant fabrics, making hand washing possible by preventing the
water used to wash the vest from degrading the ballistic capabilities of the
vest. However, rinsing thoroughly is still important to remove all traces of
soap. Rinsing properly prohibits the accumulation of residual soap film,
which can absorb water and reduce the protective properties of certain
types of ballistic- or stab-resistant fabric.
Body armor fabric should never be dried outdoors, even in the shade, as
ultraviolet light is known to cause degradation of certain types of ballistic
fabric. Tests have demonstrated that ballistic efficiency is significantly and
adversely affected by exposure to sunlight for extended periods of time.
Each time body armor is washed, it should be inspected for any signs of
wear. If the protective materials are not covered with a permanent cover
(which is highly uncommon for a typical modern vest), and it appears that
the thread used to sew layers together is wearing badly or that the fabric is
unraveling, the vest should be returned to the manufacturer for
replacement. Officers should never attempt to repair armor themselves
under any circumstances.
Today, most manufacturers market concealable body armor with the
protective panel sealed within a moisture barrier, such as thin rip-stop
nylon or coated cloth, instead of chemically waterproofing the fabric. The
owner of such armor must routinely inspect it to be sure that the cover of
the protective inserts has not been cut or damaged, which would allow
moisture to penetrate the protective panel. Even if the outer covers have
not been cut or otherwise damaged, the moisture barrier can still be
damaged. When the protective material or the outershell carrier rubs over
the protective panel cover as a result of the normal flexing that occurs
when body armor is in use, it can wear through the cover and expose the
armor to moisture penetration. It should also be noted that certain types of
covering materials tend to make the armor much warmer to wear, because
it significantly reduces the rate at which perspiration can evaporate or be
absorbed.
The exceptional ballistic- and stab-resistant efficiency of materials used to
construct body armor compensates for any of these limitations associated
with maintenance and care. The user can easily care for and properly
maintain body armor and ensure that it provides its rated protection
throughout its service life.
When caring for hard armor, it is important to remember that hard body
armor, particularly ceramic material, must be handled carefully because it
is fragile. Ceramic materials--such as boron carbide, aluminum oxide, or
silicon carbide--are extremely brittle. Such armor should not be dropped
on hard surfaces and when used, the ceramic must serve as the striking
(exterior) surface. It should also be inspected before each use to ensure
that no surface cracks are present that would degrade ballistic
performance.
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