|
Optional Heated Weight
Designed for use with the
SUTHERLAND® Rub Tester
This heated weight provides a uniform test
for evaluating the "hot abrasion" resistance
of printed cartons, labels, and periodicals.
Where required, rub resistance
specifications may now be based on number of
strokes at a given temperature as well as
pressure. Before putting the weight into
service, replace the natural black rubber
pads on the SUTHERLAND® Rub Tester base with
the silicone pad furnished. Peel the cover
from the adhesive and apply the pad directly
to the clean base.
The lamp in the end of
the heat shield functions with the contacts
in the thermostat. "Templesticks" or a
pyrometer may be used to occasionally check
temperature control knob settings.
When using the weight, have trichlorethylene
or similar fireproof solvent and toweling
handing for removing foreign material from
the heated shoe between tests.
The silicone pad pictured must be used with
the heated weight. |
 |
SUGGESTED PROCEDURE FOR TESTING FOR "Hot
Abrasion" Resistance
Test each sample at 200°F, 300°F, 400°F and with 10
and 20 rubs at each temperature.
Start the machine oscillating at once after placing
the heated weight on the sample and remove the
weight immediately after oscillation ceases.
The tested specimens may be rated for wear and smear
using a scale of "none, very slight, moderate, and
severe".
Consideration must be given to the time interval
between printing and testing, as well as to the
cleanliness of the surface of the sample.
This procedure does not purport to address safety
problems, if any, associated with its use. It is the
responsibility of the user to establish appropriate
safety and health practices. |
