A blister pack for dispensing pills that is childproof yet senior-friendly. The blister pack includes a substantially tear-resistant housing that encloses one or more blisters contained on a blister sheet and surrounded by criss-cross grain material to provide cut or tear resistance in multiple directions....http://www.google.es/patents/US7784250?utm_source=gb-gplus-sharePatente US7784250 - Method of forming childproof blister pack
