主要毒性(xing)物(wu)質(zhi)(zhi)：苯(ben)被公(gong)認為(wei)致癌物(wu)質(zhi)(zhi)，但苯(ben)類是樹(shu)(shu)脂材料的良(liang)好溶(rong)劑，它具(ju)有(you)溶(rong)解性(xing)強(qiang)，揮發速度快，價格便(bian)宜等優點，因(yin)此被廣泛用(yong)(yong)于(yu)(yu)樹(shu)(shu)脂的溶(rong)劑。在(zai)包(bao)裝(zhuang)(zhuang)中(zhong)(zhong)主要用(yong)(yong)于(yu)(yu)復(fu)合(he)包(bao)裝(zhuang)(zhuang)材料粘(zhan)和(he)(he)劑和(he)(he)塑料印刷油墨的溶(rong)劑。由于(yu)(yu)在(zai)復(fu)合(he)材料和(he)(he)塑料印刷過(guo)程中(zhong)(zhong)苯(ben)類溶(rong)劑揮發不完全，包(bao)裝(zhuang)(zhuang)材料或容器生產設備比較簡陋(lou)時(shi)有(you)可能(neng)造成苯(ben)類物(wu)質(zhi)(zhi)在(zai)包(bao)裝(zhuang)(zhuang)材料中(zhong)(zhong)殘(can)留。食品(pin)(pin)包(bao)裝(zhuang)(zhuang)設計過(guo)程中(zhong)(zhong)苯(ben)類物(wu)質(zhi)(zhi)滲透到食品(pin)(pin)中(zhong)(zhong)，會導(dao)致食品(pin)(pin)中(zhong)(zhong)含有(you)苯(ben)。