主要毒性(xing)物(wu)質(zhi)：苯被公認為致(zhi)癌物(wu)質(zhi)，但苯類(lei)是樹脂(zhi)材(cai)料的良好溶(rong)(rong)劑(ji)(ji)，它具有溶(rong)(rong)解性(xing)強，揮(hui)發(fa)速(su)度(du)快，價(jia)格便宜(yi)等優點，因(yin)此被廣泛用于(yu)樹脂(zhi)的溶(rong)(rong)劑(ji)(ji)。在包(bao)(bao)裝(zhuang)中(zhong)(zhong)主要用于(yu)復(fu)合(he)包(bao)(bao)裝(zhuang)材(cai)料粘和劑(ji)(ji)和塑(su)料印(yin)刷油墨的溶(rong)(rong)劑(ji)(ji)。由(you)于(yu)在復(fu)合(he)材(cai)料和塑(su)料印(yin)刷過(guo)程中(zhong)(zhong)苯類(lei)溶(rong)(rong)劑(ji)(ji)揮(hui)發(fa)不完全，包(bao)(bao)裝(zhuang)材(cai)料或容器生產設備比較簡(jian)陋(lou)時有可能(neng)造成苯類(lei)物(wu)質(zhi)在包(bao)(bao)裝(zhuang)材(cai)料中(zhong)(zhong)殘留。食(shi)品(pin)包(bao)(bao)裝(zhuang)設計過(guo)程中(zhong)(zhong)苯類(lei)物(wu)質(zhi)滲透到食(shi)品(pin)中(zhong)(zhong)，會導致(zhi)食(shi)品(pin)中(zhong)(zhong)含有苯。