A multi-part headband attachable to a face mask blank and a method of attaching the same. The multi-part headband has a unit length corresponding to the distance between the attachment locations as measured along a surface of the face mask blank or along an axis intersecting the attachment...http://www.google.com.au/patents/US5724677?utm_source=gb-gplus-sharePatent US5724677 - Multi-part headband and respirator mask assembly and process for making same 
