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Flexibility

It is desirable for a coating material not to crack or lose adhesion if the substrate is subjected to some kind of forming procedure. Such faults would destroy the two main functions of the coating, namely to protect and to decorate. The forming of the substrate may be the result of an intended and desired forming process and may be manual or by a machine, or it may be caused by expansion or contraction due to temperature. Ideally, in all these cases adequate elastic (as well as adhesive) properties of coating material must be provided to maintain adequate adhesion.


It is desirable for a coating material not to crack or lose adhesion if the substrate is subjected to some kind of forming procedure. Such faults would destroy the two main functions of the coating, namely to protect and to decorate. The forming of the substrate may be the result of an intended and desired forming process and may be manual or by a machine, or it may be caused by expansion or contraction due to temperature. Ideally, in all these cases adequate elastic (as well as adhesive) properties of coating material must be provided to maintain adequate adhesion.

 

Product Examples:

Cylindrical Mandrel Bending Tester, Model 266 S

Lever-type instrument for testing the flexibilty and the adhesive properties of coatings when these are subjected to bending stresses. With 14 easy exchangeable mandrels (diameter 2 - 32 mm). Testing with the cylindrical mandrel bending tester determines the greatest cylinder diameter at which a coating will show cracking or flaking subsequent to bending. Model 266 S allows the testing of samples up to a width of 100 mm.

Conical Mandrel Bending Tester, Model 312

To establish the limiting extension of coating materials on sheet metal specimens by bending around a conical mandrel. From the diameter of the mandrel at the point where the crack starts, the maximum relative extension of the coating can be calculated. With rapid clamping device for faster operation.

Original TABER® STIFFNESS TESTER

Accurate, precision built instrument that combines high sensitivity with lightweight but rugged construction. Stiffness readings are automatically converted to the appropriate user-selected stiffness range. Up to 1,000 readings can be stored in the non-volatile memory. Average, standard deviation and high/low readings are automatically calculated. The stored values are classified by the time and date or by a designation entered by the operator. Stored readings may be printed or downloaded to a PC. Operators have the ability to customize the direction, deflection and number of cycles.