主要毒(du)性物(wu)(wu)質(zhi)(zhi)：苯(ben)(ben)被公(gong)認為(wei)致癌物(wu)(wu)質(zhi)(zhi)，但苯(ben)(ben)類是樹脂(zhi)材料(liao)(liao)的(de)良好(hao)溶(rong)劑(ji)(ji)，它具有溶(rong)解(jie)性強，揮發速度快，價(jia)格便宜(yi)等優(you)點，因(yin)此(ci)被廣泛用(yong)(yong)于(yu)樹脂(zhi)的(de)溶(rong)劑(ji)(ji)。在(zai)(zai)包裝(zhuang)中(zhong)(zhong)主要用(yong)(yong)于(yu)復合包裝(zhuang)材料(liao)(liao)粘和劑(ji)(ji)和塑料(liao)(liao)印刷油墨的(de)溶(rong)劑(ji)(ji)。由于(yu)在(zai)(zai)復合材料(liao)(liao)和塑料(liao)(liao)印刷過(guo)程中(zhong)(zhong)苯(ben)(ben)類溶(rong)劑(ji)(ji)揮發不完全，包裝(zhuang)材料(liao)(liao)或容器生產設備比(bi)較簡陋時(shi)有可能造成苯(ben)(ben)類物(wu)(wu)質(zhi)(zhi)在(zai)(zai)包裝(zhuang)材料(liao)(liao)中(zhong)(zhong)殘(can)留。食(shi)品包裝(zhuang)設計過(guo)程中(zhong)(zhong)苯(ben)(ben)類物(wu)(wu)質(zhi)(zhi)滲(shen)透到食(shi)品中(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)含有苯(ben)(ben)。