ALTANA Mandrel Set - Manual (Page 3)

2
Description
When a coated panel is bent tightly around a
cylinder of known diameter, the damage caused
by distending the coating may be evaluated.
Panels of a variety of fl exible materials, including
steel to 1/32“ thick, may be used with the BYK-
Gardner Mandrel Set.
After bending the coated panel, the fl exibility
of the coating is indicated by the nature and
extent of cracking and fl aking and the radius
of curvature required to produce these fl aws.
Similarly, the fi lm‘s adhesion may be rated by the
extent to which the loosened fl akes or chips of the
damaged fi lm have adhered to the substrate, or
separated from it, during or after the bending. It
may also be desired to bend uncoated panels of
certain materials and then examine their surfaces
for signs of damage.
Description