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Testing the shear and peel strengths of insole ribs

Outlining the procedures for confirming the fitness-for-purpose of these important footwear components.

Before a welt is stitched to the outsole, it is first stitched to a ‘rib’ which has been adhered to the underside of the insole. This article explains what testing can be used to determine the bonding integrity – of both shear strength and peel strength – between the rib and the insole material.

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