主(zhu)(zhu)要(yao)毒性(xing)物(wu)(wu)質(zhi)：苯(ben)被(bei)公認為(wei)致(zhi)癌(ai)物(wu)(wu)質(zhi)，但苯(ben)類(lei)是樹脂材(cai)料(liao)的良好溶(rong)劑(ji)，它具有(you)溶(rong)解性(xing)強，揮發速(su)度快，價格便宜等(deng)優點，因(yin)此(ci)被(bei)廣泛用于(yu)樹脂的溶(rong)劑(ji)。在包(bao)裝(zhuang)(zhuang)中(zhong)(zhong)(zhong)主(zhu)(zhu)要(yao)用于(yu)復合包(bao)裝(zhuang)(zhuang)材(cai)料(liao)粘和劑(ji)和塑料(liao)印刷油墨的溶(rong)劑(ji)。由于(yu)在復合材(cai)料(liao)和塑料(liao)印刷過(guo)程中(zhong)(zhong)(zhong)苯(ben)類(lei)溶(rong)劑(ji)揮發不(bu)完全，包(bao)裝(zhuang)(zhuang)材(cai)料(liao)或容器(qi)生產設(she)備比較(jiao)簡(jian)陋時(shi)有(you)可(ke)能造(zao)成(cheng)苯(ben)類(lei)物(wu)(wu)質(zhi)在包(bao)裝(zhuang)(zhuang)材(cai)料(liao)中(zhong)(zhong)(zhong)殘留。食(shi)品包(bao)裝(zhuang)(zhuang)設(she)計過(guo)程中(zhong)(zhong)(zhong)苯(ben)類(lei)物(wu)(wu)質(zhi)滲透到食(shi)品中(zhong)(zhong)(zhong)，會導致(zhi)食(shi)品中(zhong)(zhong)(zhong)含有(you)苯(ben)。