主要毒性物質(zhi)：苯(ben)被公認(ren)為致(zhi)癌物質(zhi)，但苯(ben)類是樹脂(zhi)材(cai)(cai)料的(de)(de)良好溶(rong)(rong)劑，它具有(you)(you)溶(rong)(rong)解性強，揮發(fa)速度快，價格便宜等優點，因此被廣泛用(yong)于樹脂(zhi)的(de)(de)溶(rong)(rong)劑。在(zai)包(bao)裝中(zhong)主要用(yong)于復合包(bao)裝材(cai)(cai)料粘和劑和塑料印刷油墨的(de)(de)溶(rong)(rong)劑。由于在(zai)復合材(cai)(cai)料和塑料印刷過程(cheng)中(zhong)苯(ben)類溶(rong)(rong)劑揮發(fa)不完全，包(bao)裝材(cai)(cai)料或(huo)容器生產設備比(bi)較簡陋時(shi)有(you)(you)可(ke)能(neng)造成苯(ben)類物質(zhi)在(zai)包(bao)裝材(cai)(cai)料中(zhong)殘留。食(shi)(shi)品(pin)包(bao)裝設計過程(cheng)中(zhong)苯(ben)類物質(zhi)滲透到(dao)食(shi)(shi)品(pin)中(zhong)，會導致(zhi)食(shi)(shi)品(pin)中(zhong)含有(you)(you)苯(ben)。