CEN/TC 193/WG 5 - Adhesives for leather and footwear

TC - Correction of values in Tables 1, 2 and 3 (data sheets) - Chemistry

For research, development and quality certification purposes, some simply formulated 1- and 2-part "reference test adhesives" have been developed and, from the most important and most often applied, some materials have been selected as "reference test materials". This Technical Report offers for each of these reference test adhesives and reference test materials some information and specify some properties. CEN/TC193 Working Group 5 takes care for a continuous updating of these data sheets.

This European Standard defines for four main types of footwear minimum strength requirements for their sole-upper bonds produced with solvent-based or dispersion adhesives under specified conditions.

This European Standard specifies a method to determine the colour change of white or bright coloured leather surfaces caused by adhesives and/or their basic constituents migrating from the reverse sides to their upper surfaces. This change of colour may be caused either by the adhesive directly or by adhesive coatings on materials used in footwear manufacture, e.g. adhesive coated linings for ironing, toe-puffs, reinforcing tapes or bonded materials.

This document specifies procedures for the preparation of test pieces comprising adhesive coated leather or other footwear upper material onto which a soling material is moulded directly.  The procedures described simulate direct vulcanising of rubber, injection moulding of thermoplastics and reaction moulding of polyurethane.
The prepared test pieces are suitable for the test procedures described in EN 1392, to meet the requirements of EN 522 and EN 1391.

This European Standard specifies a method for evaluating the bondability of leather and footwear materials in particular soling and upper materials in stuck-on assemblies using solvent-based or dispersion adhesives under specified conditions.

This standard specifies a method for evaluating solvent based and dispersion adhesives intended for use for sole attachment. It specifies minimum requirements for some strength properties of bonds made with these adhesives and establishes an adhesive classification based on the results obtained with reference test materials representing types of leather, rubber or plastic materials often used as upper or bottom materials in footwear manufature.

This Standard specifies test methods to measure some strength properties of bonds of leather and footwear materials, in stuck-on assemblies using solvent-based and dispersion adhesives, under different conditions. These can be chosen taking into account the different stresses that such bonds are subjected to, depending on the type of footwear, under different external conditions in service.