ZCC2087 - Manual
24. August 2021
© Copyright 2021, PROCEQ SA
Procedure
Place the test panel on a firm base.
Successively make two cuts about 20 mm (0.79 in.) long, the second cut crossing the
first one at 90°, generating a lattice pattern. Cut through the film to the substrate in one
steady motion using just sufficient pressure on the cutting tool to have the cutting edge
reach the substrate. (For coatings having a dry film thickness up to and including 50
μ
m
(2 mils)
–
eleven cuts, for coatings having a dry film thickness between 50
μ
m (2 mils)
and 125
μ
m (5 mils)
–
six cuts).
Brush the film lightly with a soft brush or tissue to remove any detached flakes or ribbons
of coatings.
Remove two complete laps of tape and discard.
Remove an additional length at a steady (that is not jerked) rate and cut a piece about
75 mm (2.95 in.) long.
Place the center of the tape over the grid and in the area of grid smooth into place by a
finger.
To ensure good contact with the film rub the tape firmly with the eraser on the end of a
pencil.
Within 90 ± 30 s of application, remove the tape by seizing the free end and rapidly (not
jerked) back upon itself at as close to an angle of 180° as possible.
Inspect the grid area for removal of coating using a magnifier and rate the adhesion in
accordance with the cross-cut scale.
Repeat the test in two other locations on each test panel.
Issue a test report.
