PET碎片的洗滌
洗(xi)(xi)(xi)滌(di)常釆(bian)用(yong)80-100℃熱水來軟(ruan)化或(huo)溶解(jie)粘(zhan)貼標簽和底座的(de)(de)EVA粘(zhan)接劑(ji)或(huo)其他類型(xing)粘(zhan)接劑(ji),為防(fang)止脫落的(de)(de)粘(zhan)接劑(ji)再(zai)粘(zhan)附PET碎(sui)片,需在水中加入(ru)添加劑(ji),如堿、乳化劑(ji)或(huo)其它專用(yong)化學(xue)劑(ji)。清洗(xi)(xi)(xi)液一(yi)般由工(gong)(gong)廠根據廢瓶來源和粘(zhan)接特性來確定其配方組(zu)成(cheng)和含量,清洗(xi)(xi)(xi)液可(ke)濾去雜質重新加熱後循環使用(yong),洗(xi)(xi)(xi)滌(di)可(ke)在裝(zhuang)有攪拌器的(de)(de)特別清選罐內進行,為保證清洗(xi)(xi)(xi)的(de)(de)效(xiao)果,洗(xi)(xi)(xi)滌(di)可(ke)釆(bian)用(yong)二級洗(xi)(xi)(xi)滌(di)工(gong)(gong)藝