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