Dollies

Adhesion test dollies are essential components in pull-off adhesion testing, allowing accurate measurement of the adhesion strength of paints, coatings, and construction materials in accordance with ISO and ASTM standards.

Dollies for adhesion testing play a key role in evaluating the bond strength of paint coatings, galvanic layers, and construction materials. These dollies are specifically designed to be used with the KN-10 adhesion tester, ensuring precise, repeatable results that comply with international testing standards.

They are widely used in pull-off adhesion tests across industrial environments, construction sites, laboratories, and quality control applications.

What are dollies used for in an adhesion test?

Dollies act as the traction element that is bonded to the coating under test. By applying a progressively increasing pull-off force with the adhesion tester, the force required to detach the coating from the substrate is determined, expressed in kgf or kN.

They are essential components in any paint or coating adhesion test carried out in accordance with ISO, ASTM, or UNE standards.

How is the adhesion test performed?

1. A dolly is bonded to the surface to be tested.
2. A circumferential cut is made around the dolly to isolate the test area.
3. The KN-10 adhesion tester is positioned on the dolly.
4. A progressive tensile force is applied by turning the loading wheel.
5. At the moment of detachment, the instrument displays the maximum pull-off force on the screen.

Technical Features of Dollies

Dollies for adhesion testing are designed to ensure accurate transmission of pull-off force during the test, providing reliable and repeatable results.

Available diameters:

• 20 mm: Recommended for adhesion tests on paints, industrial coatings, and galvanic layers.
• 50 mm: Recommended for tests on construction materials, mortars, coatings, and mineral-based substrates.

These dollies allow the test to be adapted to the type of material and applicable standards, ensuring a precise evaluation of coating adhesion to the substrate.

Key Benefits of Dollies for Adhesion Testers

• Full compatibility with the KN-10 adhesion tester.
• Precise and repeatable test results.
• Compliance with ISO, ASTM, and UNE standards.
• Available for paint and construction applications.
• Wide range of accessories and spare parts.

Frequently Asked Questions (FAQ)

What are dollies for adhesion testing?
They are metal pieces that adhere to the coating to apply a pull-off force and measure its adhesion to the substrate.

What dolly diameter do I need?

• 20 mm: Paints, industrial coatings, and galvanic layers.
• 50 mm: Mortars, coatings, and construction materials.

Are dollies reusable?
No. Dollies are designed for single use to ensure the reliability of the test.

Do they comply with international standards?
Yes. They are used in tests according to ISO 4624, ASTM D4541, UNE EN 24624, and UNE EN 1015-12.