Patent ID: 8382929

Claim:
A method of forming a hem flange assembly, comprising the steps of: (a) positioning a first panel adjacent to a second panel such that an edge of the second panel extends beyond an edge of the first panel; (b) folding the non-overlapping portion of the second panel over the edge of the first panel to form a hem flange joint; (c) applying an over hem sealer to cover the hem flange joint, the over hem sealer comprising: (i) at least one free-radical polymerizable monomer; (ii) an ambient temperature radical initiator system comprising at least one oxidizing agent and at least one reducing agent; (iii) a photoinitiator; and, (iv) an epoxy compound; wherein the adhesive will at least partially cure at a temperature between 10° C. and 40° C. through the ambient temperature radical catalyst system; (d) allowing the ambient temperature cure to take place, wherein at least a portion of the surface of the sealer remains uncured and slightly tacky; and (e) curing the surface of the sealer by exposing the surface to electromagnetic energy to activate the photoinitiator.