Patent ID: 7438782

Claim:
A method of adhesion, the method comprising: extruding a mass of a tack-free activatable material, the activatable material including: i) between about 10 and about 20% by weight of an epoxy resin; ii) an epoxy/elastomer adduct in an amount at least approximately 20 to less than about 30% by weight of the activatable material, wherein the adduct is a solid at a temperature of 23° C.; iii) between about 3 and about 7% by weight of one or more thermoplastic polyethers; iv) between about 5 and about 10% by weight of the activatable material of a core/shell polymer impact modifier that includes a core of a first polymeric material and a shell of a second polymeric material, wherein second polymeric material is grafted onto and encapsulates the first polymeric material; and the first polymeric material has a glass translation temperature of at least about 10° C. below a glass transition temperature of the second polymeric material; and v) between about 0.001 and about 7% by weight of a curing agent; locating the activatable material adjacent a first surface and a second surface of an automotive vehicle, the first surface and second surface being part of a hem flange joint wherein the activatable material is located adjacent the first surface and the second surface as a substantially tack-free elongated strip; and activating the activatable material to bond the activatable material to the first surface and second surface; wherein the glass transition temperature of the first polymeric material is less than about 23° C. and the glass transition temperature of the second polymeric material is at least about 23° C.