Test instrument for block / reblock testing of plastic films. Meets ASTM D 3354,
“Blocking Load by Parallel Plate Method”. Based on Procedure A, the alternate method
of moving a weight axially along the balance beam with a precision drive system;
creating a weight addition rate equivalent to 90 ml/min of water.
The BRB-900A was designed to measure the undesired static adhesion which can exist
between layers of certain types of plastic films. The Model BRB-900A utilizes a compact
mechanical balancing system that incrementally adds weight equivalent to 90 ml per
minute of water. Through use of this system, the BRB-900A is able to increase the
precision and speed of blocking tests and meets or exceeds all conditions specified
by ASTM D-3354. The BRB-900A Tester features a magnetic clamp to securely hold the
sample in place, eliminating the need for tape. The force required for separation
is shown in tenths of a gram on an onboard display. All variables are monitored electronically
to maximize accuracy and repeatability. For low to mid-range blocking force measurement
from 10 grams to 210 gram maximum test load.
Model BRB-900A Blocking Tester: ASTM D-3354 Procedure A
