Key Advantages:
Body Voltage: 
Impact on floor covering
The ability of ESD flooring to both inhibit
charges generation and dissipate any
accumulated charge with an acceptable
decay time are two totally different
properties that should always be considered
during evaluation and selection of ESD
flooring. A floor with low body voltage
generation properties minimizes the
charge created by movement of people
and equipment.
The ElectraStat Solution
ElectraStat ESD flooring minimizes any charge
accumulation. If you generate less charge,
you have to dissipate less charge. Less to
worry about!
Experimental Procedure and Results
- ESD STM 97.2 (Voltage Generation of
Flooring in Combination with a person)
Industry Standard Heel Straps with
I meg-ohm resistor, utilized for
evaluation.
- All materials (Flooring, Heel Straps)
were conditioned at 12% RH for 72
hours before test.
- Test completed in 12% RH condition.
- The maximum and minimum absolute values from each test is reported.
Compliance with ANSI/ESD S20.20-1999
This standard stresses the importance of
two test methods when evaluating ESD
Control Flooring:
Voltage Measurement on a Person -
ANSI/ESD S20.20 suggests that your floor
should not generate more than 100 volts
on a person's body. ElectraStat ESD Control
Rubber Flooring will not generate more
than 10 volts on a person's body. (In
conjunction with conductive footwear,
using ESD STM 97.2)
Resistance Measurement in Combination
with a Person -
This test method takes into
account the person and their footwear.
Test results show that noram static
dissipative rubber flooring performs as
well as conductive products, measuring
well below the ANSI/ESD S20.20
recommended limit of 35 meg-ohms to
ground (using ESD STM 97.1)
Outgassing:
An independent test company provided
the following outgassing values of different
floor coverings according to ASTM E-595.
The test method covers a screening
technique to determine the Volatile Content
of Materials (VCM) when exposed to a
vacuum environment.
Three parameters are measured: total
mass loss (TML), collected volatile
condensable materials (CVCM), and the
amount of water vapor regained (WVG).
The CVCM parameters are one of the best
indicators to evaluate the outgassing
properties of an ESD floor covering.
ElectraStat ESD flooring has extremely low
outgassing. This is due to the fact nora"
rubber flooring contains no volatile
plasticizers.
Additional benefits with using ElectroStat floor
covering with no plasticizers include:
- Dimensional Stability - nora" sheet/tile
rubber flooring is not prone to shrinking
due to its vinyl plasticizer-free composition.
- Better Chemical and Stain Resistance -
all ElectroStat rubber floors are free of PVC
and have extremely dense surfaces
which provides floors which are easy
and inexpensive to maintain.
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Outgassing
comparison
according to
ASTM-E-595
(CVCM)
Independent Testing
Company, 1996/1998
Definition of CVCM:
Collected volatile
condensable material -
the quantity of outgassed
molter from o test specimen that condenses on a
collector maintained at a
specific constant
temperature for a specified
time. CVCM is expressed as
a percentage of the initial
specimen mass and is
calculated from the candensate mass determined
from the difference in mass
of the collector plate before
and after the test. |
Maintenance:
In many manufacturing areas, floor
maintenance may not be a top priority.
Maintenance has traditionally been linked
to aesthetics, not ESD prevention.
In addition, floor cleanings and ESD
waxing may interfere with the
manufacturing process and delays are
typically costly. A floor, that would
require as little maintenance as possible,
is preferable. The cost of maintenance
could be extremely high due to the
typically large square footage of most IC
manufacturing and assembly plants (i.e.
1,000,000+ sq ft).
The advantage of the non-porous surface,
of noram rubber floor coverings, combined
with "ElectraStat cleanguard'", the dirt repelling
feature of all norae rubber floor coverings,
permits easy and inexpensive cleaning.
The extremely hard wearing surface of
nora' floor coverings offers a whole series
of advantages in care and maintenance.
There is no need for coatings, therefore:
- No travel path formation
- No flaking and yellowing of a coating
Our ElectraStat Rubber ESD flooring
successfully maintains its appearance for
years even in heavy traffic areas with
round the clock operations.
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