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The Self-Aligning Dolly
enables uniform distribution of the pulling force
over the surface being tested, preventing a
one-sided pull-off.
Unequal pulling force during testing caused by
uneven adhesive bond lines and coating surfaces can
result in random, unexplainable readings. To obtain
more repeatable and meaningful adhesion
measurements, it is imperative that the pulling
force applied to the test dolly is uniformly
distributed over the surface being tested.
The PosiTest Adhesion
Tester compensates for misalignment. The
uniquely spherical articulating dolly head is
engaged into a ring of small ball bearings, ensuring
correct alignment. This feature is found only on the
PosiTest Adhesion Tester.
Test Dollies:
The PosiTest Adhesion Tester uses inexpensive
single-use aluminum dollies designed according to
internationally accepted standards and practices.
They have a full 20 or 50 mm surface diameter with
no holes to clean or keep from filling with
adhesive.
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