Measuring and testing – Coating material: ink adhesive and/or plastic
Patent
1989-02-15
1989-09-05
Yasich, Daniel M.
Measuring and testing
Coating material: ink adhesive and/or plastic
73827, G01N 1904
Patent
active
048627402
ABSTRACT:
A glue bond testing apparatus for testing the glue bond at the end flaps of paperboard cartons, such as commonly used for packaging canned or bottled beverage products, is provided with a carton support which is adapted to receive an erected filled and glued carton and hold the same against movement. A gripper plate or clamp is secured to the carton end flap, the glue bond of which is to be tested. An electronic strain gauge is mounted on the apparatus with a force input rod connected to the clamp through a removable rigid connection. The electronic force gauge is slidably mounted on a pair of parallel rods for back and forth movement in a direction toward and away from the gripper plate. The carton support is arranged to support the carton to be tested at an angle to the direction of movement of the electronic force gauge so as to simulate the hand opening test of the flap. A single revolution cam operates with a cam follower to drive the force gauge on the guide rods away from the carton, thereby pulling the flap to be tested open with pivotal movement about the flap score line, breaking the glue bond and providing a direct indication of the force required. With continued revolution of the cam, return springs on the guide rods brings the test apparatus back to its start position. A releasable coupling is provided by which the clamp may be quickly and easily connected and removed from the force gauge following the test.
REFERENCES:
patent: 3129586 (1964-04-01), Allen et al.
patent: 3396578 (1968-08-01), Skundberg
patent: 4027529 (1977-06-01), Olsen
patent: 4080825 (1978-03-01), Liebrenz et al.
Bulletin #250.1, W. C. Dillon & Company, PO Box 1501 Santa Rosa, CA 95402, 1986, "Electronic Force Gauge".
The Mead Corporation
Yasich Daniel M.
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