In manufacturing the power transmission belt of this invention, the top faces of the internal die are covered with {TAIL ~ a bulky nonwoven fabric} under {HEAD ~ non pressure} 
In manufacturing the power transmission belt of this invention , the top faces of the internal die are covered with { TAIL ~ a bulky nonwoven fabric } under { HEAD ~ non pressure }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD