The flange of the pour spout is adhered to the outer surface of the outer barrier layer, with {HEAD ~ the operations} of sealing {TAIL ~ the barrier layers} together and of adhering the flange preferably being carried out simultaneously by an ultrasonic pressing operation 
of sealing
The flange of the pour spout is adhered to the outer surface of the outer barrier layer , with { HEAD ~ the operations } of sealing { TAIL ~ the barrier layers } together and of adhering the flange preferably being carried out simultaneously by an ultrasonic pressing operation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH