主(zhu)要毒性物(wu)質：苯(ben)被公(gong)認為致癌物(wu)質，但(dan)苯(ben)類(lei)是樹脂(zhi)(zhi)材(cai)料(liao)(liao)的良好溶劑(ji)(ji)，它具有(you)溶解性強，揮發(fa)速度(du)快，價格(ge)便宜等優點，因此被廣泛用(yong)于樹脂(zhi)(zhi)的溶劑(ji)(ji)。在包裝(zhuang)(zhuang)中(zhong)(zhong)主(zhu)要用(yong)于復合包裝(zhuang)(zhuang)材(cai)料(liao)(liao)粘和劑(ji)(ji)和塑料(liao)(liao)印刷(shua)油(you)墨的溶劑(ji)(ji)。由于在復合材(cai)料(liao)(liao)和塑料(liao)(liao)印刷(shua)過程(cheng)(cheng)中(zhong)(zhong)苯(ben)類(lei)溶劑(ji)(ji)揮發(fa)不完(wan)全，包裝(zhuang)(zhuang)材(cai)料(liao)(liao)或容器生產設(she)備比較簡(jian)陋時有(you)可能造成苯(ben)類(lei)物(wu)質在包裝(zhuang)(zhuang)材(cai)料(liao)(liao)中(zhong)(zhong)殘留。食(shi)品包裝(zhuang)(zhuang)設(she)計過程(cheng)(cheng)中(zhong)(zhong)苯(ben)類(lei)物(wu)質滲透到食(shi)品中(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)含有(you)苯(ben)。