ZCC2087 - Manual
24. August 2021
© Copyright 2021, PROCEQ SA
5 Executing a cross-cut test
5.1 Measurement principle and procedure
There are various standards that describe the execution of a cross-cut test in order to
determine the adhesion of a coating.
In general a cross-cutting pattern is applied to the surface and visually evaluated.
To execute a cross-cut test the following procedure is followed:
1.
Apply the cross-cutting pattern: Intersecting cuts (6 cuts with the appropriate spacing,
depending on the method and the film thickness) are performed. With Method A the
intersecting cuts are at an angle of 30° (X-cut) and with method B the intersecting cuts
are at an angle of 90° (lattice pattern).
2.
In order to produce these cuts a dedicated cross-cut tester as the ZCC2087 can be used,
or alternatively a sharp blade with the appropriate cross-cut templet (ZCT2160). The
cross-cut tester is specifically designed to produce a reproducible pattern. Note: Always
pull the cross-cut tester.
3.
Clean the cut pattern with a soft brush (included in the cross-cut tester).
4.
Place an adhesive tape over the lattice parallel to one set of cuts. Ensure good contact
with the coating.
5.
Evaluate the pattern according to the selected standard.
5.2 Choosing the cross-cutting pattern
There are two different methods of applying the cross-cut patterns. The pattern has to
chosen depending on the standards used and the thickness of the film.
5.2.1 Method A - X-cut
In Method A the intersecting cuts are at an angle of 30° (X-cut).
Method A is suitable for tests in accordance with
ASTM D3359
for film with thicknesses of >125µm
DIN EN ISO16276-2
for all films
5.2.2 Method B - Lattice pattern
In Method B the intersecting cuts are at an angle of 90° (lattice pattern).
Method B is suitable for tests in accordance with
ASTM D3359
for film with thicknesses of >125µm
DIN EN ISO16276-2
for film with thicknesses of 0µm - 250µm
