主要毒性(xing)物(wu)(wu)質(zhi)(zhi)：苯被公(gong)認為致(zhi)癌物(wu)(wu)質(zhi)(zhi)，但苯類是樹脂(zhi)材(cai)(cai)料(liao)(liao)的良好(hao)溶(rong)(rong)(rong)劑(ji)，它具有溶(rong)(rong)(rong)解性(xing)強，揮發(fa)速度(du)快，價格便宜等(deng)優點，因此被廣(guang)泛用于樹脂(zhi)的溶(rong)(rong)(rong)劑(ji)。在(zai)包(bao)裝(zhuang)(zhuang)中(zhong)(zhong)主要用于復合包(bao)裝(zhuang)(zhuang)材(cai)(cai)料(liao)(liao)粘(zhan)和劑(ji)和塑(su)料(liao)(liao)印(yin)刷油(you)墨的溶(rong)(rong)(rong)劑(ji)。由于在(zai)復合材(cai)(cai)料(liao)(liao)和塑(su)料(liao)(liao)印(yin)刷過程(cheng)中(zhong)(zhong)苯類溶(rong)(rong)(rong)劑(ji)揮發(fa)不完全，包(bao)裝(zhuang)(zhuang)材(cai)(cai)料(liao)(liao)或容器生產設備比較簡陋時有可能(neng)造(zao)成苯類物(wu)(wu)質(zhi)(zhi)在(zai)包(bao)裝(zhuang)(zhuang)材(cai)(cai)料(liao)(liao)中(zhong)(zhong)殘留(liu)。食(shi)(shi)品(pin)包(bao)裝(zhuang)(zhuang)設計過程(cheng)中(zhong)(zhong)苯類物(wu)(wu)質(zhi)(zhi)滲透到(dao)食(shi)(shi)品(pin)中(zhong)(zhong)，會導致(zhi)食(shi)(shi)品(pin)中(zhong)(zhong)含(han)有苯。