主要毒性物質：苯(ben)被公認為(wei)致癌(ai)物質，但(dan)苯(ben)類是(shi)樹(shu)(shu)脂材(cai)(cai)料(liao)的良好溶(rong)(rong)(rong)劑，它(ta)具有(you)溶(rong)(rong)(rong)解性強，揮發(fa)速度快，價格便宜(yi)等優點，因此被廣泛用(yong)于樹(shu)(shu)脂的溶(rong)(rong)(rong)劑。在包裝(zhuang)中(zhong)(zhong)主要用(yong)于復(fu)合(he)(he)包裝(zhuang)材(cai)(cai)料(liao)粘和(he)劑和(he)塑(su)料(liao)印(yin)刷油墨的溶(rong)(rong)(rong)劑。由于在復(fu)合(he)(he)材(cai)(cai)料(liao)和(he)塑(su)料(liao)印(yin)刷過程(cheng)中(zhong)(zhong)苯(ben)類溶(rong)(rong)(rong)劑揮發(fa)不完(wan)全，包裝(zhuang)材(cai)(cai)料(liao)或容器生(sheng)產(chan)設備比較簡陋時有(you)可能造成苯(ben)類物質在包裝(zhuang)材(cai)(cai)料(liao)中(zhong)(zhong)殘留。食(shi)(shi)品包裝(zhuang)設計過程(cheng)中(zhong)(zhong)苯(ben)類物質滲透到食(shi)(shi)品中(zhong)(zhong)，會導致食(shi)(shi)品中(zhong)(zhong)含有(you)苯(ben)。