Cross Hatch Cutter

Used to analyze the adhesion of simple and multilayer coatings on substrates, as well as between multilayer coatings according to ASTM D 3359. The cross hatch cutter or the cutting tool, has one to six special blades with a separation of 1 or 2 mm, is scanned on the coatings to form a grid. A 75 mm length of a 25 mm wide semitransparent pressure sensitive tape is placed with its centre on the grid such that no creases are formed so as to ensure good contact between the surfaces. The tape is removed within 90 � 30 seconds of application by seizing the free end and rapidly pulled back upon itself without jerks at as close an angle of 180o as possible. The grid area is inspected for the removal of coating from the substrate.