主要(yao)毒性物質(zhi)(zhi)(zhi)：苯被公認(ren)為致癌物質(zhi)(zhi)(zhi)，但苯類(lei)是樹(shu)脂(zhi)材料(liao)(liao)的(de)良好(hao)溶(rong)(rong)劑(ji)，它具有(you)溶(rong)(rong)解性強(qiang)，揮發速(su)度(du)快，價格便宜等優(you)點，因此(ci)被廣泛用于(yu)樹(shu)脂(zhi)的(de)溶(rong)(rong)劑(ji)。在包(bao)(bao)裝(zhuang)(zhuang)中(zhong)(zhong)(zhong)主要(yao)用于(yu)復合(he)包(bao)(bao)裝(zhuang)(zhuang)材料(liao)(liao)粘和劑(ji)和塑(su)料(liao)(liao)印(yin)(yin)刷(shua)油墨的(de)溶(rong)(rong)劑(ji)。由于(yu)在復合(he)材料(liao)(liao)和塑(su)料(liao)(liao)印(yin)(yin)刷(shua)過(guo)程中(zhong)(zhong)(zhong)苯類(lei)溶(rong)(rong)劑(ji)揮發不完全，包(bao)(bao)裝(zhuang)(zhuang)材料(liao)(liao)或容器(qi)生產設備比較簡陋時有(you)可(ke)能造成(cheng)苯類(lei)物質(zhi)(zhi)(zhi)在包(bao)(bao)裝(zhuang)(zhuang)材料(liao)(liao)中(zhong)(zhong)(zhong)殘留。食品(pin)(pin)(pin)包(bao)(bao)裝(zhuang)(zhuang)設計過(guo)程中(zhong)(zhong)(zhong)苯類(lei)物質(zhi)(zhi)(zhi)滲透到食品(pin)(pin)(pin)中(zhong)(zhong)(zhong)，會(hui)導致食品(pin)(pin)(pin)中(zhong)(zhong)(zhong)含有(you)苯。