Impact test for Qualicoat
(for powder coatings only)
The impact shall be carried out on the reverse side, whereas the results shall be assessed on the coated side.
- -Class 1 powder coatings (one- and two-coat), energy: 2.5 Nm: EN ISO 6272- 2 (indenter diameter: 15.9 mm)
- -Two-coat PVDF powder coatings, energy: 1.5 Nm: EN ISO 6272-1 or EN ISO 6272-2 / ASTM D 2794 (indenter diameter: 15.9 mm)
- -Class 2 and 3 powder coatings, energy: 2.5 Nm: EN ISO 6272-1 or EN ISO 6272-2 / ASTM D 2794 (indenter diameter: 15.9 mm) followed by a tape pull adhesion test as specified below.
Apply an adhesive tape (see § 2.4) to the significant surface of the test panel following the mechanical deformation. Cover the area by pressing down firmly against the organic coating to eliminate voids or air pockets. Pull the tape off sharply at right angles to the plane of the panel after 1 minute.
The test shall be performed on an organic coating with a thickness approximating the minimum required.
In case of a negative result, the test shall be repeated on a panel coated with a thickness of
- Class 1 and 2: 60 to 70 μm
- Class 3: 50 to 60 μm
Using normal corrected vision, the organic coating shall not show any sign of cracking or detachment, except for class 2 and 3 powder coatings.
Class 2 and 3 powder coatings:
Using normal corrected vision, the organic coating shall not show any sign of detachment following the tape pull adhesion test.