Gasket having an inner edge with coined angles and method of manufacture

摘要

A gasket having a metal base sheet wherein the sheet includes apertures. The apertures are bounded by an edge of the sheet. The edge includes coined angles. An elastomeric material is disposed on the coined angles and the edge to form a sealing bead. The coined angles increase the surface area of the base sheet exposed to the elastomeric material to form a stronger bond between the base sheet and the elastomeric material. A texture may be applied to the coined angles to further increase the surface area of the base sheet exposed to the elastomeric material. This abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.