一、低溫熱熔膠膜和高溫熱熔膠膜的區別

熱熔膠膜具有高(gao)(gao)溫(wen)低溫(wen)的(de)區(qu)(qu)別(bie)，這主(zhu)要是以熔(rong)點為依據(ju)來劃分的(de)。下面來介紹下熱(re)熔(rong)膠膜高(gao)(gao)溫(wen)與低溫(wen)的(de)區(qu)(qu)別(bie)。

1、高溫熱熔膠膜類型

高(gao)溫(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)主要(yao)是指熔(rong)(rong)(rong)(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)度(du)比(bi)較高(gao)的(de)熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)，其實高(gao)溫(wen)(wen)(wen)類型熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)只(zhi)有高(gao)溫(wen)(wen)(wen)TPU熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)，熔(rong)(rong)(rong)(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)度(du)在150℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)在180℃左右。還(huan)有一些中高(gao)溫(wen)(wen)(wen)類型熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)，主要(yao)包括PA熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)點(dian)120℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)150℃）、PES熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)點(dian)溫(wen)(wen)(wen)度(du)115℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)140℃）和(he)PO熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)點(dian)在110℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)140℃左右）以(yi)及中溫(wen)(wen)(wen)TPU熱(re)(re)熔(rong)(rong)(rong)(rong)(rong)(rong)膠(jiao)膜(mo)(mo)(mo)（熔(rong)(rong)(rong)(rong)(rong)(rong)點(dian)在110℃，使(shi)(shi)用(yong)(yong)溫(wen)(wen)(wen)度(du)在140℃）。

2、低溫熱熔膠膜類型

低(di)溫(wen)(wen)(wen)(wen)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)指的(de)(de)是熔(rong)(rong)(rong)點溫(wen)(wen)(wen)(wen)度(du)低(di)的(de)(de)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，除了中(zhong)高溫(wen)(wen)(wen)(wen)和高溫(wen)(wen)(wen)(wen)類型的(de)(de)，其(qi)他(ta)材(cai)質的(de)(de)都屬(shu)于低(di)溫(wen)(wen)(wen)(wen)類型熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)，主(zhu)要(yao)包(bao)括低(di)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)和EVA熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)。其(qi)中(zhong)低(di)溫(wen)(wen)(wen)(wen)TPU熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)的(de)(de)熔(rong)(rong)(rong)點溫(wen)(wen)(wen)(wen)度(du)在70℃，有的(de)(de)型號(hao)可低(di)至(zhi)五(wu)六十度(du)；而EVA的(de)(de)熱(re)(re)熔(rong)(rong)(rong)膠(jiao)(jiao)膜(mo)(mo)熔(rong)(rong)(rong)點主(zhu)要(yao)是在70攝氏(shi)度(du)，低(di)的(de)(de)型號(hao)可以達到四(si)五(wu)十度(du)，具有良好(hao)的(de)(de)耐(nai)低(di)溫(wen)(wen)(wen)(wen)性能。

3、高溫與低溫熱熔膠膜的區別

兩(liang)者最大的(de)(de)區別(bie)就是(shi)熔(rong)點(dian)不(bu)(bu)同(tong)(tong)，除了熔(rong)點(dian)的(de)(de)不(bu)(bu)同(tong)(tong)之外，在(zai)性(xing)能(neng)和使用(yong)(yong)范圍上也有所不(bu)(bu)同(tong)(tong)。低(di)(di)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)主要(yao)是(shi)用(yong)(yong)在(zai)一(yi)些不(bu)(bu)耐(nai)高(gao)溫(wen)材(cai)質的(de)(de)材(cai)料復合中，而高(gao)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)主要(yao)應用(yong)(yong)在(zai)有耐(nai)高(gao)溫(wen)要(yao)求(qiu)的(de)(de)領(ling)域。整體(ti)來說的(de)(de)話，高(gao)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)的(de)(de)粘接性(xing)能(neng)會(hui)更(geng)好一(yi)點(dian)，但是(shi)低(di)(di)溫(wen)熱(re)熔(rong)膠(jiao)膜(mo)可以(yi)更(geng)好地保護(hu)材(cai)料不(bu)(bu)受到(dao)熱(re)損(sun)傷。

二、熱熔膠膜高溫好還是低溫好

熱熔膠膜的特(te)點(dian)是需(xu)(xu)要加(jia)(jia)熱熔化才(cai)具(ju)有黏性，冷卻硬化后才(cai)具(ju)有粘接強度(du)(du)。高(gao)溫熱熔膠膜顧名思(si)義，就是需(xu)(xu)要加(jia)(jia)熱的溫度(du)(du)高(gao)，相反，低溫熱熔膠膜也就是在低溫條件下就可以(yi)加(jia)(jia)熱熔化了。

因為熱熔膠(jiao)膜(mo)達到一(yi)定溫度后就會(hui)熔化，熔化后，即使前期已經形成良好(hao)的(de)粘(zhan)接，也(ye)會(hui)再(zai)一(yi)次失(shi)去粘(zhan)接強度。所以，熱熔膠(jiao)膜(mo)的(de)熔化溫度，也(ye)就是(shi)接近它(ta)的(de)一(yi)個(ge)(ge)耐(nai)溫溫度。超過這個(ge)(ge)耐(nai)溫溫度，熱熔膠(jiao)膜(mo)就會(hui)失(shi)去粘(zhan)接。所以，通常(chang)情況下，高(gao)溫熱熔膠(jiao)膜(mo)的(de)耐(nai)溫性能也(ye)是(shi)比較(jiao)(jiao)高(gao)的(de)，相反，低溫熱熔膠(jiao)膜(mo)它(ta)的(de)耐(nai)高(gao)溫性能比較(jiao)(jiao)差。

值得(de)一提的(de)是(shi)，熔化溫(wen)度(du)和實際的(de)熱(re)(re)(re)熔膠膜(mo)使用溫(wen)度(du)是(shi)不一樣的(de)。熱(re)(re)(re)熔膠膜(mo)的(de)實際使用溫(wen)度(du)通常會比熔化溫(wen)度(du)高(gao)幾(ji)十度(du)。具體高(gao)多少(shao)還需(xu)要看熱(re)(re)(re)熔膠膜(mo)本身的(de)熔指(zhi)等其它特(te)性(xing)，為的(de)是(shi)使得(de)熱(re)(re)(re)熔膠膜(mo)在更短的(de)時間內可以熔化。

通過上面的(de)(de)說明(ming)，我們(men)似乎(hu)感覺(jue)到高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)具有更好的(de)(de)性能優(you)勢，能復合(he)(he)要求更高(gao)的(de)(de)場合(he)(he)，但實際(ji)上并不是這樣。選擇(ze)高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)還(huan)是低溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)是由(you)復合(he)(he)的(de)(de)材料(liao)類(lei)型(xing)決(jue)定的(de)(de)。俗(su)話說，存在(zai)即(ji)合(he)(he)理！高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)、低溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)本(ben)就是為了滿足不同(tong)材料(liao)的(de)(de)復合(he)(he)要求而比研(yan)發推出的(de)(de)，不能單獨討論(lun)是高(gao)溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)好，還(huan)是低溫(wen)(wen)(wen)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)更好。判定哪(na)一(yi)種(zhong)類(lei)型(xing)的(de)(de)熱熔(rong)(rong)(rong)膠(jiao)(jiao)(jiao)(jiao)膜(mo)更好或者更合(he)(he)適，需要根(gen)據具體的(de)(de)復合(he)(he)要求來測評(ping)、判斷。

在我們的材料粘接應用上，并不是所有場合都需要對熱熔膠膜提出耐高溫的要求，往往低溫的熱熔膠膜就可以符合性(xing)能(neng)(neng)需(xu)求。并(bing)且，使用低溫熱(re)熔膠(jiao)膜(mo)可以大大降低能(neng)(neng)耗，在性(xing)能(neng)(neng)達到(dao)要求的(de)基礎上，盡量做到(dao)節能(neng)(neng)環保的(de)，這才是(shi)我們(men)所(suo)追求的(de)。