Desco TB-3036 Installation Manual

TECHNICAL BULLETIN TB-3036

HEAVY DUTY COTTON POLY ESD SMOCKS

Installation and Maintenance

Figure 1. Desco Heavy Duty Poly
Cotton ESD Smocks

Description

Desco Heavy Duty Poly Cotton
ESD Smocks is a Static Control
Garment with RTG <1 x10E9
ohms meeting the required limits of
ANSI/ESD S20.20 when tested per
ANSI/ESD STM2.1 or ESD TR53.

“Garments are intended to attenuate
electrostatic fields that may be present
on personnel clothing. … While a
person may be grounded using a wrist
strap or other grounding methods,
that does not mean that insulative
clothing fabrics can dissipate a charge
to that person’s skin and then to
ground. Personnel clothing usually
is electrically separate or isolated
from the body.” (ESD TR20.20-2008
section 5.3.13.1)

Outfitting a work force in Heavy
Duty Poly Cotton ESD Smocks
is the single most powerful step
to demonstrate a company’s
commitment to their ESD control
program.

Desco Heavy Duty Poly Cotton
ESD Smocks are designed to be
antistatic, low tribocharging and
offer protection to ESD sensitive
items from electrostatic fields
generated by clothing on the user’s
body.

The Heavy Duty Poly Cotton ESD
Smocks create a Faraday Cage
around the torso of the wearer that
shield ESD susceptible items from
static charges generated on the
wearers’ clothing.

The Heavy Duty Poly Cotton ESD
Smocks are constructed of a
medium weight poly/cotton blend
with a minimum of 1% conductive
fiber providing continuous and
consistent charge dissipation. All
of the seams in the garment are
designed to maintain electrical
continuity from panel to panel
and from sleeve to sleeve
in accordance with the ESD
Association Garment Standard,
ANSI/ESD STM2.1.

Heavy Duty Poly Cotton ESD
Smocks are available in the
following sizes:

Item# Size Chest Sleeve

73505 Small 34”-36” 34”
73506 Medium 38”-40” 34-3/8”
73507 Large 42”-44” 35”
73508 X Large 46”-48” 35 1/2”
73509 2X Large 50”-52” 35 1/2”

Instructions for use

Follow these directions for proper
installation and grounding of the
Heavy Duty Poly Cotton ESD
Smocks:

Put on the garment, fastening all the
press studs on the front of the smock;
ensure no clothing is exposed outside
of the smock. Note: EN 61340-5-1
paragraph 5.2.5 Garments “Coats,
jackets, smocks and overalls shall
completely cover all clothing in the
area of the arms and torso.

“Garments that become worn or
damaged should be repaired or
replaced by a qualified source to
ensure the electrical integrity of the
seams. Once the repair is made,
the periodic test…should be
conducted to validate the repair.”
(ESD TR20.20-2008 section

5.3.13.4.1 Repairs)
“For personnel safety, static control

garments should not be worn in
situations where there is exposure to
high voltage. Regular laundering of
static control garments according to
the manufacturer’s recommendation
is suggested to make sure conductive
fibers do not become contaminated
and rendered insulative. After
laundering, thorough rinsing of
the garment will help eliminate the
possible buildup of chemicals on the
conductive fibers, which can cause
them to become insulative. Drying
garments at high temperatures may
degrade conductive fibers in fabrics
used to manufacture garments.” (ESD
TR20.20-2008 section 5.3.13.6 Other
Considerations)

Garments can also be very
important in field work, as the
area may be an uncontrolled
environment which can be very
dry.

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

TB-3036 July 2009 Page 1 of 2

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

© 2009 DESCO INDUSTRIES INC.

Employee Owned

Specifications

Fabric Weight
5 ounces/sq yard

Fabric Content
Texturized polyester (80%),
cotton (19%) and a minimum

of 1% conductive fibers.
Surface Resistance of Fabric

RTG <1 x 10E9 ohms per
ANSI/ESD STM2.1
Static Decay Rate

5000 volts to 500 volts in less
than 0.1 seconds, per

FTMS-101C

Compliance Verification
Testing

Panel to panel conductivity is
essential and easy to test using
our Surface Resistance Tesk Kit
Item #19780, by placing 5 pound
electrodes on different panels.
For additional information, refer to
ANSI/ESD S20.20, ESD TR20.20,
the ESD Association Garment
Standard, ANSI/ESD STM2.1,
and Compliance Verification ESD
TR53.

Maintenance

For proper operation, ESD
garments must be laundered
periodically. Woolite works well.
Liquid detergents are better than
dry in that there is less caking and
frictional wear. Launder garment
in cool or warm water, tumble dry
with low heat or hang dry. In terms
of laundering the smocks by hand
or with a washing machine, most
prefer using a washing machine.
This works well if using a standard
house machine on gentle cycle.
Industrial machines are fine if
“Pony” (typically under 200 pound
loads) machines are used. It is
not recommended to launder
these garments in heavy industrial
laundry machines as it will lead to
premature wear. Garments
be tumbled dry using low heat. DO
NOT BLEACH.

The conductive fibers are sensitive
to heat and should not be exposed
to laundering heat in excess
of 120°F. Use only non-ionic
softeners and detergents when
laundering. Under normal wearing
and recommended washing
conditions, Desco Heavy Duty Poly

Cotton ESD Smocks will maintain
their usefulness and effectiveness
for a minimum of 50 washings.

should

Limited Warranty
Desco expressly warrants that
for a period of one (1) year from
the date of purchase or (50) fifty
wash cycles, whichever occurs
first, Desco garments will be free
of defects in material (parts) and
workmanship (labor). Within the
warranty period, a garment will be
replaced at Desco’s option, free of
charge. Call Customer Service at
909-627-8178 (Chino, CA) or (781)
821-8370 (Canton, MA) for Return
Material Authorization (RMA) and
proper shipping instructions and
address. Include a copy of your
original packing slip, invoice, or
other proof of date of purchase.
Any garment under warranty should
be shipped prepaid to the Desco
factory. Warranty replacements will
take approximately two weeks.

Warranty Exclusions
THE FOREGOING EXPRESS
WARRANTY IS MADE IN LIEU
OF ALL OTHER PRODUCT
WARRANTIES, EXPRESSED
AND IMPLIED, INCLUDING
MERCHANTABILITY AND
FITNESS FOR A PARTICULAR
PURPOSE WHICH ARE
SPECIFICALLY DISCLAIMED.
The express warranty will not
apply to defects or damage due
to accidents, neglect, misuse,
alterations, operator error, or failure
to properly maintain, clean or repair
products.

Limit of Liability
In no event will Desco or any seller
be responsible or liable for any
injury, loss or damage, direct or
consequential, arising out of the use
of or the inability to use the product.
Before using, users shall determine
the suitability of the product for their
intended use, and users assume
all risk and liability whatsoever in
connection therewith.

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Website: Desco.com

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]

TB-3036 Page 2 of 2

© 2009 DESCO INDUSTRIES INC.

Employee Owned