Nylon Used

The adhesion of nylon, especially to metal, when used by the hot melt technique can be substantially increased by using a thermosetting phenol formaldehyde resin in association with it. This combination of nylon and a phenolic resin is not included in the section dealing with two polymer adhesives, because very little phenolic resin is used (it may as low as one percent) and the quantity of phenolic resin is to small to modify the physical properties of the nylon except at the adherent interface, where it increses adhesion perhaps merely by facilitating wetting.