主(zhu)要(yao)毒性物(wu)質：苯(ben)(ben)被公認為(wei)致癌物(wu)質，但苯(ben)(ben)類(lei)是樹脂材(cai)(cai)料的(de)良(liang)好溶(rong)劑，它(ta)具有溶(rong)解性強，揮發(fa)速度(du)快，價格(ge)便宜等優點(dian)，因此被廣(guang)泛用(yong)于(yu)樹脂的(de)溶(rong)劑。在包(bao)裝(zhuang)中(zhong)(zhong)(zhong)主(zhu)要(yao)用(yong)于(yu)復合包(bao)裝(zhuang)材(cai)(cai)料粘和劑和塑(su)料印(yin)(yin)刷(shua)油墨的(de)溶(rong)劑。由(you)于(yu)在復合材(cai)(cai)料和塑(su)料印(yin)(yin)刷(shua)過(guo)程(cheng)中(zhong)(zhong)(zhong)苯(ben)(ben)類(lei)溶(rong)劑揮發(fa)不完(wan)全，包(bao)裝(zhuang)材(cai)(cai)料或容器生產設(she)備比較簡(jian)陋時有可能造成苯(ben)(ben)類(lei)物(wu)質在包(bao)裝(zhuang)材(cai)(cai)料中(zhong)(zhong)(zhong)殘留。食品包(bao)裝(zhuang)設(she)計過(guo)程(cheng)中(zhong)(zhong)(zhong)苯(ben)(ben)類(lei)物(wu)質滲透(tou)到食品中(zhong)(zhong)(zhong)，會導致食品中(zhong)(zhong)(zhong)含有苯(ben)(ben)。