主要毒性(xing)(xing)物(wu)質(zhi)(zhi)：苯(ben)被(bei)公認(ren)為致(zhi)癌物(wu)質(zhi)(zhi)，但苯(ben)類(lei)是樹脂(zhi)材(cai)(cai)料(liao)(liao)(liao)(liao)的良好溶劑(ji)(ji)，它具有溶解性(xing)(xing)強(qiang)，揮發速度快，價(jia)格便宜等優點，因此被(bei)廣泛用于樹脂(zhi)的溶劑(ji)(ji)。在包裝中(zhong)(zhong)主要用于復合(he)包裝材(cai)(cai)料(liao)(liao)(liao)(liao)粘(zhan)和(he)劑(ji)(ji)和(he)塑料(liao)(liao)(liao)(liao)印刷(shua)(shua)油墨的溶劑(ji)(ji)。由于在復合(he)材(cai)(cai)料(liao)(liao)(liao)(liao)和(he)塑料(liao)(liao)(liao)(liao)印刷(shua)(shua)過(guo)程中(zhong)(zhong)苯(ben)類(lei)溶劑(ji)(ji)揮發不完(wan)全，包裝材(cai)(cai)料(liao)(liao)(liao)(liao)或容器生(sheng)產(chan)設(she)備比較簡(jian)陋時有可能(neng)造(zao)成苯(ben)類(lei)物(wu)質(zhi)(zhi)在包裝材(cai)(cai)料(liao)(liao)(liao)(liao)中(zhong)(zhong)殘留。食(shi)(shi)(shi)品包裝設(she)計過(guo)程中(zhong)(zhong)苯(ben)類(lei)物(wu)質(zhi)(zhi)滲透到食(shi)(shi)(shi)品中(zhong)(zhong)，會導致(zhi)食(shi)(shi)(shi)品中(zhong)(zhong)含有苯(ben)。