adhesion - cross hatch, pull off & push off testers

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From the largest man-made structures to the smallest household appliances, most manufactured products have a protective or cosmetic coating. Premature failure of this coating can, at the very least, result in costly penalties or rework.

Adhesion testing after the coating process will quantify the strength of the bond between substrate and coating, or between different coating layers or the cohesive strength of some substrates. Routine testing is used as part of inspection and maintenance procedures to help detect potential coating failures.

Elcometer offer a highly comprehensive range of Adhesion Gauges designed specifically to meet your requirements. The gauges can be split into three categories:

Cross Hatch/Cross Cut Method The coating is cut into small squares, thereby reducing lateral bonding, and the adhesion assessed against ISO, ASTM or Corporate Standards.
Pull Off Adhesion Method Tensile Dollies (or stubs) are glued to the coating and, when the adhesive has cured, the force required to pull the dolly off the surface is measured.
Push Off Adhesion Method Similar to the Pull Off Adhesion Test, a dolly is glued to the coating. When the adhesive has cured, however, the dolly is pushed off the surface by the adhesion gauge.

 

 

 

 

Click here for a guide to selecting the correct adhesion gauge for your application.

Please click on the appropriate image or image title to view the product details
 

Elcometer 1540 Cross Cut Tester

Simple instrument for quickly determining the adhesion of a large variety of paints. Made from special steel, it has 11 tapered teeth with 1mm spacing. Two series of lines are cut at right angles to obtain a pattern of 100 squares.

 

Elcometer 1542 Cross Hatch Adhesion Tester

Simple but effective method for determining the adhesion of a large variety of coatings. The instrument is ideal for testing the adhesion of thin coatings on flat surfaces using the cross cut method, available with three different spacings 1, 2, and 3mm, corresponding to the thickness of layer to be tested.

 

Elcometer 107 Cross Hatch Cutter

The coating may be continuous and look good, but how well is it connected to the substrate? The Elcometer 107 cross hatch cutter provides an instant assessment of the quality of the bond to the substrate. Due to its rugged construction this gauge is ideal for thin, thick or tough coatings on flat or curved surfaces. An ideal field or laboratory test.

 

Elcometer 108 Hydraulic Adhesion Tester

An extremely versatile hydraulic adhesion tester which will cope with many adhesion test requirements. Test can be made on flat or curved (concave and convex) surfaces. A reusable dolly is adhered to the coating’s surface and the force required to push the dolly from the surface is applied using the handle. The value of the force applied is displayed either on a digital display or on an analogue dial.

 

Elcometer 106 Pull Off Adhesion Gauge

Perhaps the best known adhesion gage on the market today. The Elcometer 106 adhesion tester is easy to operate and fully portable, providing a numerical value for adhesion. Supplied in a rugged carry case for moving around the jobsite, the unit is hand operated so you don't have to worry about a power supply!

 

Elcometer 106/6 Coatings on Concrete Adhesion Tester

The Elcometer 106/6 Adhesion Tester has been specifically designed to measure coatings on concrete. Operating in a similar way to the regular Elcometer 106 Adhesion Testers, the Elcometer 106/6 allows for a 50mm (2”) diameter dolly for testing coatings on concrete.

 

Elcometer 109 Tensile Adhesion Tester

The Elcometer 109 Push off Tensile Adhesion Tester provides the operator with a means of carrying out a simple pass/fail test of the adhesion of the coating against a specification limit. If the coating bond is greater than the dolly rating, the dolly breaks - not your coating - thus becomming a 'non-destructive' test.

 

Elcometer 110 Pneumatic Adhesion Tester

The Elcometer 110 Patti® is a portable pneumatic adhesion tester which uses compressed gas from either a canister or the compressed air feed. Due to the controlled force being applied, the resultant adhesion value is highly repeatable. This, together with the gauge's suitability on thin substrates provides the User with an ideal testing instrument in the laboratory or the field.

 

Elcometer 1910 PAT™ Handy Adhesion Gauge

This lightweight, portable, hydraulic adhesion tester has built in hydraulic safety devices for smooth and drift proof accuracy. The special test head allows adhesion tests on both internal and external curved surfaces, making this an ideal gauge for pipelines and protective coatings applications.

 

Elcometer 1940/1941 PAT Adhesion Testers

This portable range of hydraulic adhesion testers provides users with the ability to measure the bond strength of coatings on a wide range of substrates. With the unique testing head design, each gauge ensures a perpendicular (90º) pull irrespective of the surface contours or orientation.

 

Elcometer 1970 PFCV - Portable Field Calibration Varification Unit

For use with the Elcometer PAT™, Elcometer 106, and Elcometer 108 Adhesion Testers, this Portable Field Calibration Verification Unit is ideal for confirming your adhesion gauge calibration. Connect the appropriate pull stub to the unit, pull your adhesion tester and compare the adhesion tester reading to the reading on the Portable Calibration Unit’s Display.

 

How to select the correct Adhesion Gauge

Cross Hatch Cutters Advantages: A fast, low cost, comparison method – see table below
Possible Limitations: A subjective test for flat surfaces for a limited thickness range.
Applications: For paint and powder coatings up to a thickness of 125µm (5mils)
   
Pull Off Adhesion Testers Advantages: Simple to use, quantitative range – giving you a definitive adhesion value
Possible Limitations: Time required for some adhesives to cure
Applications: Ideal gauge for the laboratory or field – flat or curved substrate applications
   
Push Off Adhesion Testers Advantages: Fast cure time adhesives can be used, ideal for curved surfaces
Possible Limitations: High forces exerted by gauge may cause thin substrates to deform
Applications: Pipelines and metal spray coatings

 

 

 

 

 

 

 

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