主要(yao)毒性(xing)物(wu)(wu)質：苯被公認為致癌物(wu)(wu)質，但苯類是樹脂材料(liao)的(de)良好(hao)溶(rong)(rong)劑(ji)(ji)，它具有(you)(you)溶(rong)(rong)解性(xing)強(qiang)，揮發速度(du)快，價格便宜(yi)等優點(dian)，因此被廣(guang)泛(fan)用于樹脂的(de)溶(rong)(rong)劑(ji)(ji)。在(zai)包(bao)裝(zhuang)中(zhong)(zhong)(zhong)主要(yao)用于復(fu)合(he)包(bao)裝(zhuang)材料(liao)粘和劑(ji)(ji)和塑料(liao)印刷油墨(mo)的(de)溶(rong)(rong)劑(ji)(ji)。由(you)于在(zai)復(fu)合(he)材料(liao)和塑料(liao)印刷過程中(zhong)(zhong)(zhong)苯類溶(rong)(rong)劑(ji)(ji)揮發不完全，包(bao)裝(zhuang)材料(liao)或容器生(sheng)產(chan)設備(bei)比較簡(jian)陋時有(you)(you)可能造成苯類物(wu)(wu)質在(zai)包(bao)裝(zhuang)材料(liao)中(zhong)(zhong)(zhong)殘留。食品(pin)包(bao)裝(zhuang)設計過程中(zhong)(zhong)(zhong)苯類物(wu)(wu)質滲透(tou)到食品(pin)中(zhong)(zhong)(zhong)，會導(dao)致食品(pin)中(zhong)(zhong)(zhong)含有(you)(you)苯。