Now description will be made on one preferred embodiment of the double facer according to {HEAD ~ the present invention} with {TAIL ~ reference} to FIGS 1 to 4 
Now description will be made on one preferred embodiment of the double facer according to { HEAD ~ the present invention } with { TAIL ~ reference } to FIGS 1 to 4
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH