流延膜所有(you)(you)的(de)(de)(de)(de)熱(re)(re)(re)塑(su)性(xing)塑(su)料(liao)(liao)(liao)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)(de)性(xing)能(neng)，不(bu)(bu)僅(jin)同(tong)使(shi)(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)塑(su)料(liao)(liao)(liao)原材(cai)(cai)料(liao)(liao)(liao)粒子(zi)有(you)(you)密切的(de)(de)(de)(de)關系，還同(tong)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)(de)生(sheng)產工(gong)(gong)藝(yi)及工(gong)(gong)藝(yi)參數(shu)有(you)(you)關。同(tong)一(yi)(yi)種塑(su)料(liao)(liao)(liao)制品，例如(ru)：薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)可(ke)(ke)以用(yong)(yong)(yong)不(bu)(bu)同(tong)的(de)(de)(de)(de)生(sheng)產工(gong)(gong)藝(yi)流(liu)程來生(sheng)產，即使(shi)(shi)用(yong)(yong)(yong)同(tong)一(yi)(yi)種材(cai)(cai)料(liao)(liao)(liao)同(tong)一(yi)(yi)種生(sheng)產工(gong)(gong)藝(yi)，由于生(sheng)產時的(de)(de)(de)(de)溫度、壓力、吹脹比等工(gong)(gong)藝(yi)參數(shu)的(de)(de)(de)(de)不(bu)(bu)同(tong)，所得薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)(de)性(xing)能(neng)也有(you)(you)所差別(bie)。流(liu)延(yan)(Cast) 法(fa)(fa)生(sheng)產的(de)(de)(de)(de)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)稱(cheng)流(liu)延(yan)膜(mo)(mo)(mo)(mo)(mo)， 用(yong)(yong)(yong)c作字頭， 如(ru)：流(liu)延(yan)聚丙烯薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)， 稱(cheng)CPP膜(mo)(mo)(mo)(mo)(mo)。流(liu)延(yan)法(fa)(fa)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)有(you)(you)擠出(chu)流(liu)延(yan)膜(mo)(mo)(mo)(mo)(mo)和溶(rong)(rong)(rong)(rong)劑(ji)流(liu)延(yan)膜(mo)(mo)(mo)(mo)(mo)兩種。1、溶(rong)(rong)(rong)(rong)劑(ji)流(liu)延(yan)法(fa)(fa)溶(rong)(rong)(rong)(rong)劑(ji)流(liu)延(yan)法(fa)(fa)生(sheng)產的(de)(de)(de)(de)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)具有(you)(you)更薄(bo)(bo)(bo)且厚度均勻性(xing)更好(hao)的(de)(de)(de)(de)優點，1~3um的(de)(de)(de)(de)超(chao)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)只在(zai)(zai)某些(xie)高科技材(cai)(cai)料(liao)(liao)(liao)中使(shi)(shi)用(yong)(yong)(yong)，一(yi)(yi)般在(zai)(zai)包裝材(cai)(cai)料(liao)(liao)(liao)中不(bu)(bu)采(cai)用(yong)(yong)(yong)，因為設備(bei)投資大，溶(rong)(rong)(rong)(rong)劑(ji)毒性(xing)大，而(er)(er)且需使(shi)(shi)用(yong)(yong)(yong)大量溶(rong)(rong)(rong)(rong)劑(ji)，溶(rong)(rong)(rong)(rong)劑(ji)回收設備(bei)及操(cao)作費用(yong)(yong)(yong)均較大，只有(you)(you)像玻璃紙等極少數(shu)不(bu)(bu)能(neng)或(huo)(huo)很難(nan)用(yong)(yong)(yong)擠出(chu)法(fa)(fa)生(sheng)產的(de)(de)(de)(de)薄(bo)(bo)(bo)膜(mo)(mo)(mo)(mo)(mo)才使(shi)(shi)用(yong)(yong)(yong)溶(rong)(rong)(rong)(rong)劑(ji)法(fa)(fa)生(sheng)產。溶(rong)(rong)(rong)(rong)劑(ji)法(fa)(fa)生(sheng)產的(de)(de)(de)(de)流(liu)延(yan)膜(mo)(mo)(mo)(mo)(mo)工(gong)(gong)藝(yi)是：把熱(re)(re)(re)塑(su)性(xing)塑(su)料(liao)(liao)(liao)的(de)(de)(de)(de)溶(rong)(rong)(rong)(rong)液或(huo)(huo)使(shi)(shi)用(yong)(yong)(yong)熱(re)(re)(re)固(gu)性(xing)塑(su)料(liao)(liao)(liao)的(de)(de)(de)(de)預聚體(ti)溶(rong)(rong)(rong)(rong)膠涂布在(zai)(zai)可(ke)(ke)剝(bo)離(li)(li)(li)的(de)(de)(de)(de)載體(ti)上，經過一(yi)(yi)個(ge)烘道的(de)(de)(de)(de)加(jia)熱(re)(re)(re)干燥，進而(er)(er)熔塑(su)化成膜(mo)(mo)(mo)(mo)(mo)層冷(leng)卻下來后，從載體(ti)離(li)(li)(li)型(xing)面(mian)上剝(bo)離(li)(li)(li)下來卷取而(er)(er)成膜(mo)(mo)(mo)(mo)(mo)。載體(ti)可(ke)(ke)以是鋼帶、涂布硅橡膠的(de)(de)(de)(de)離(li)(li)(li)型(xing)紙或(huo)(huo)輥筒。