In one embodiment, an inner layer of {TAIL ~ the multi layer substrate} can be provided with {HEAD ~ perforations} 
In one embodiment , an inner layer of { TAIL ~ the multi layer substrate } can be provided with { HEAD ~ perforations }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD