主(zhu)要毒(du)性(xing)物(wu)質(zhi)：苯(ben)(ben)被(bei)公認為致癌物(wu)質(zhi)，但苯(ben)(ben)類是樹脂(zhi)材料(liao)(liao)的良好溶(rong)(rong)(rong)劑(ji)(ji)，它具有溶(rong)(rong)(rong)解性(xing)強，揮發速(su)度快，價(jia)格便宜等優(you)點，因(yin)此被(bei)廣(guang)泛用于(yu)樹脂(zhi)的溶(rong)(rong)(rong)劑(ji)(ji)。在包(bao)裝中(zhong)(zhong)(zhong)主(zhu)要用于(yu)復合(he)包(bao)裝材料(liao)(liao)粘和劑(ji)(ji)和塑(su)料(liao)(liao)印(yin)刷油墨的溶(rong)(rong)(rong)劑(ji)(ji)。由于(yu)在復合(he)材料(liao)(liao)和塑(su)料(liao)(liao)印(yin)刷過程中(zhong)(zhong)(zhong)苯(ben)(ben)類溶(rong)(rong)(rong)劑(ji)(ji)揮發不完(wan)全(quan)，包(bao)裝材料(liao)(liao)或容器生產設(she)備比較(jiao)簡陋時有可能(neng)造成(cheng)苯(ben)(ben)類物(wu)質(zhi)在包(bao)裝材料(liao)(liao)中(zhong)(zhong)(zhong)殘留(liu)。食(shi)品包(bao)裝設(she)計過程中(zhong)(zhong)(zhong)苯(ben)(ben)類物(wu)質(zhi)滲透到(dao)食(shi)品中(zhong)(zhong)(zhong)，會(hui)導致食(shi)品中(zhong)(zhong)(zhong)含(han)有苯(ben)(ben)。