Improved method of forming bonded web laminates by application of a liquid spray between the component layers prior to application of high frequency vibrational energy commonly referred to as "ultrasonic energy". The liquid is preferably water and added in a minor amount, preferably less than about 25%...http://www.google.com/patents/US4605454?utm_source=gb-gplus-sharePatent US4605454 - Method of ultrasonically bonding nonwoven webs
