G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 3/00 (2006.01) G01N 3/22 (2006.01) G01N 33/34 (2006.01) G01N 3/02 (2006.01) G01N 3/04 (2006.01)
Patent
CA 2128776
The invention provides a method and apparatus for testing the chew-out strength of paperboard cores. The apparatus of the invention includes a clamping element for clamping a tubular core to prevent rotation thereof; a splined chuck element in the form of an axially tapered member having a plurality of circumferentially distributed splines for insertion into one end face of the core; and a means for applying increasing torque at a controlled rate to the splined chuck element. A measuring means measures the torque applied to the splined chuck element. In operation, increasing amounts of torque are applied by the torquing means until the splined chuck element shears the end face of the tube resulting in chew-out of the core. The maximum torque force applied to the splined chuck element provides an accurate indication of the chew-out strength of the core.
Sim & Mcburney
Sonoco Products Company
LandOfFree
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