主(zhu)要(yao)毒(du)性物(wu)質(zhi)：苯(ben)(ben)(ben)被(bei)公(gong)認(ren)為(wei)致癌物(wu)質(zhi)，但苯(ben)(ben)(ben)類是樹脂材(cai)料的良好(hao)溶(rong)(rong)劑(ji)(ji)，它具有(you)溶(rong)(rong)解(jie)性強，揮發(fa)速度快(kuai)，價格便宜等優(you)點，因此被(bei)廣(guang)泛(fan)用(yong)于(yu)樹脂的溶(rong)(rong)劑(ji)(ji)。在(zai)包(bao)裝(zhuang)(zhuang)中(zhong)(zhong)(zhong)主(zhu)要(yao)用(yong)于(yu)復合包(bao)裝(zhuang)(zhuang)材(cai)料粘和劑(ji)(ji)和塑料印(yin)刷(shua)油(you)墨(mo)的溶(rong)(rong)劑(ji)(ji)。由于(yu)在(zai)復合材(cai)料和塑料印(yin)刷(shua)過(guo)程中(zhong)(zhong)(zhong)苯(ben)(ben)(ben)類溶(rong)(rong)劑(ji)(ji)揮發(fa)不完全，包(bao)裝(zhuang)(zhuang)材(cai)料或容器(qi)生(sheng)產(chan)設備比較(jiao)簡陋(lou)時有(you)可能造成苯(ben)(ben)(ben)類物(wu)質(zhi)在(zai)包(bao)裝(zhuang)(zhuang)材(cai)料中(zhong)(zhong)(zhong)殘留。食品(pin)(pin)包(bao)裝(zhuang)(zhuang)設計過(guo)程中(zhong)(zhong)(zhong)苯(ben)(ben)(ben)類物(wu)質(zhi)滲透到食品(pin)(pin)中(zhong)(zhong)(zhong)，會導致食品(pin)(pin)中(zhong)(zhong)(zhong)含有(you)苯(ben)(ben)(ben)。