主要(yao)毒性(xing)(xing)物(wu)質：苯(ben)(ben)被公認為致癌(ai)物(wu)質，但苯(ben)(ben)類是樹(shu)脂(zhi)材料(liao)的(de)良好溶(rong)(rong)劑，它具有(you)(you)溶(rong)(rong)解性(xing)(xing)強，揮(hui)發(fa)速度快，價(jia)格(ge)便宜(yi)等優點，因(yin)此(ci)被廣泛(fan)用(yong)于樹(shu)脂(zhi)的(de)溶(rong)(rong)劑。在包(bao)(bao)裝(zhuang)中(zhong)(zhong)(zhong)主要(yao)用(yong)于復合包(bao)(bao)裝(zhuang)材料(liao)粘和(he)劑和(he)塑(su)料(liao)印刷油墨的(de)溶(rong)(rong)劑。由于在復合材料(liao)和(he)塑(su)料(liao)印刷過(guo)程(cheng)中(zhong)(zhong)(zhong)苯(ben)(ben)類溶(rong)(rong)劑揮(hui)發(fa)不完全，包(bao)(bao)裝(zhuang)材料(liao)或容器生產設備比較簡陋時有(you)(you)可能(neng)造成苯(ben)(ben)類物(wu)質在包(bao)(bao)裝(zhuang)材料(liao)中(zhong)(zhong)(zhong)殘留。食(shi)品包(bao)(bao)裝(zhuang)設計(ji)過(guo)程(cheng)中(zhong)(zhong)(zhong)苯(ben)(ben)類物(wu)質滲透(tou)到食(shi)品中(zhong)(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)(zhong)含有(you)(you)苯(ben)(ben)。