Measuring and testing – Coating material: ink adhesive and/or plastic
Patent
1996-08-22
1997-09-30
Biegel, Ronald L.
Measuring and testing
Coating material: ink adhesive and/or plastic
73827, G01N 1900
Patent
active
056716346
ABSTRACT:
An apparatus for testing the adhesion quality of a coating on the interior surface of a hollow cylindrical substrate, and a method for its use, the apparatus comprising an element joined to the coating, the element having a joining face at one end, a neck at the other end for pulling in a direction perpendicular to the joining face, and a channel through the element aligned with the direction of pulling; a non-adhering plug present in the channel of the element effective to be maintained in contact with the coated surface while extending through and out of said element; a die cut adhesive disc gluing the face of the element to the coated surface as a result of pressure and heat, said disc having a die cut circumference and inner opening commensurate with the size of the plug extending therethrough; a piston and piston housing assembly in which the piston housing is slidable on the piston in response to pressure and has an extension circumferentially overlapping the neck of the element to place a substantially pure tension force on the element when the housing slides away from the coating, the piston remaining engaged with the plug which in turn stays in solid contact with the coated substrate; and a hydraulic pressure supply effective to exert a force between the piston and piston housing to pull the cylinder housing and the element away from the coated surface.
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Biegel Ronald L.
Ford Global Technologies Inc.
Malleck Joseph W.
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