現在市面上主要的膠粘劑分為水性膠,溶劑型膠,和熱熔(rong)膠,每(mei)一(yi)類(lei)都有(you)(you)其獨特(te)的特(te)點(dian)。熱熔膠(jiao)主(zhu)(zhu)要(yao)(yao)是(shi)固(gu)化(hua)時(shi)間快,粘接強度(du)高(gao),環(huan)(huan)保,還能起填補作用(yong),特(te)別適合全自動生產需求(qiu),適用(yong)的材(cai)料廣。水性(xing)膠(jiao)主(zhu)(zhu)要(yao)(yao)是(shi)以(yi)水為(wei)溶(rong)劑(ji)的膠(jiao)黏劑(ji),主(zhu)(zhu)要(yao)(yao)特(te)點(dian)是(shi)無毒不(bu)燃,綠色(se)環(huan)(huan)保,初粘性(xing)強,但干(gan)燥速度(du)慢,粘性(xing)不(bu)穩(wen)定(ding),對(dui)溫度(du)比較敏感(gan),適用(yong)材(cai)料相對(dui)單(dan)一(yi)。溶(rong)劑(ji)型膠(jiao)主(zhu)(zhu)要(yao)(yao)以(yi)有(you)(you)機溶(rong)劑(ji)為(wei)溶(rong)劑(ji)的膠(jiao)黏劑(ji),主(zhu)(zhu)要(yao)(yao)特(te)點(dian)是(shi)粘接強度(du)高(gao),耐水性(xing)好(hao),但揮發性(xing)大,污染(ran)較大等。隨著近年社會提倡環(huan)(huan)保,人們愈加認識(shi)到溶(rong)劑(ji)型膠(jiao)帶來的危害。
水(shui)性(xing)膠雖然是環保的,但與熱(re)熔膠相比(bi)應(ying)用(yong)領域太少(shao),而熱熔(rong)膠的應(ying)用(yong)非常廣泛,取代水(shui)性膠和溶劑型膠黏(nian)劑是未來發展的方向。這(zhe)樣不僅能減少(shao)溶劑排放,避(bi)免造成環(huan)境污染,還(huan)可以(yi)(yi)保護生產(chan)工人的健康,所(suo)以(yi)(yi)說(shuo)熱熔(rong)膠即環(huan)保又安全(quan)!
