DIN EN 1391:1998-04

Defines a procedure for evaluation of the bondability of leather and footwear materials in particular soling and upper materials in stuck-on assemblies by means of solvent-based or dispersion adhesives under defined conditions. Specifies some minimum bond strength requirements for assessment of the bondability of leather and footwear materials used in manufacturing footwear and defines a classification of these materials based on results obtained with reference test adhesives representing types of adhesives frequently used for sole attachment in footwear manufacture.