Bonding method, useful e.g. in building applications, involves applying polyurethane foam of specific setting time to substrate and pressing on component to be bonded

摘要

A bonding method, using polyurethane (PU) foam supplied in cans (1), involves applying a strand (s) of foam to an adhesion substrate (3) to give an adhesive layer (4); allowing the foam to collapse so that only the desired adhesive layer remains; and pressing the component (5) to be bonded onto the substrate or adhesive layer. The PU foam sets within 0.5-30 (preferably 1-8) minutes of applying the foam strand. An independent claim is included for a set for carrying out a bonding operation, consisting of a PU foam spray container (1) and a liquid application device containing a bonding accelerator.