Most likely, such incidents involve a homopolar or thermal plastic – such as teflon, polyethylene, polypropylene and some polyurethane.
It is not the plastic that is the problem, rather the oil in the plastics that is. Without treating the oil in some way, no glues including Maverick Bond, can bond these plastics successfully. The Maverick Prime will treat the oil thus allowing for gluing on such plastics. Please see Maverick Prime for more details.