Patent ID: 6832525
Filing Date: 2004-12-21
Classification: B65D,G01N

Abstract:
A method of testing the peel strength between an outer layer and an inner layer of a tubular laminate comprising the steps of:mounting the laminate sleevedly on a mandrel which is rotatable around an axis concentric with the laminate and is sized and shaped to frictionally engage at least a portion of the inner surface of the laminate such that the frictional engagement substantially prevents slipping of the laminate relative to the mandrel during testing; mounting the mandrel to a first mounting means on an extension-type testing machine such that the rotational axis of the mandrel is substantially perpendicular to the direction of extension; attaching a starting end of the outer layer of the sample to a second attachment means on the testing machine; operating the testing machine such that the outer layer of the sample is peeled at least partially from the inner layer in a direction substantially radial to the sample; and measuring the pulling force required to separate the outer layer from the inner layer.