主(zhu)要毒性物質(zhi)：苯(ben)(ben)被公認為致癌(ai)物質(zhi)，但苯(ben)(ben)類(lei)是樹(shu)脂材(cai)料(liao)(liao)的良好溶(rong)(rong)(rong)劑(ji)(ji)，它具有(you)溶(rong)(rong)(rong)解性強，揮發速度快，價格(ge)便宜等優(you)點，因此被廣(guang)泛用于樹(shu)脂的溶(rong)(rong)(rong)劑(ji)(ji)。在包(bao)(bao)裝(zhuang)(zhuang)中(zhong)(zhong)主(zhu)要用于復(fu)合包(bao)(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)粘和劑(ji)(ji)和塑料(liao)(liao)印刷油墨的溶(rong)(rong)(rong)劑(ji)(ji)。由于在復(fu)合材(cai)料(liao)(liao)和塑料(liao)(liao)印刷過程中(zhong)(zhong)苯(ben)(ben)類(lei)溶(rong)(rong)(rong)劑(ji)(ji)揮發不完(wan)全，包(bao)(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)或容器生(sheng)產設備比(bi)較簡陋時有(you)可能造成苯(ben)(ben)類(lei)物質(zhi)在包(bao)(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)中(zhong)(zhong)殘留。食(shi)品包(bao)(bao)裝(zhuang)(zhuang)設計過程中(zhong)(zhong)苯(ben)(ben)類(lei)物質(zhi)滲(shen)透到食(shi)品中(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)含有(you)苯(ben)(ben)。