主要毒性(xing)物(wu)質：苯被公認為(wei)致癌物(wu)質，但苯類是(shi)樹脂(zhi)材(cai)(cai)料(liao)的良好(hao)溶(rong)(rong)劑(ji)，它具有(you)溶(rong)(rong)解性(xing)強，揮發速度快(kuai)，價(jia)格便宜等優點，因(yin)此(ci)被廣泛用于樹脂(zhi)的溶(rong)(rong)劑(ji)。在(zai)包(bao)(bao)裝(zhuang)中(zhong)(zhong)(zhong)主要用于復合(he)包(bao)(bao)裝(zhuang)材(cai)(cai)料(liao)粘和(he)劑(ji)和(he)塑料(liao)印(yin)刷(shua)油(you)墨的溶(rong)(rong)劑(ji)。由于在(zai)復合(he)材(cai)(cai)料(liao)和(he)塑料(liao)印(yin)刷(shua)過(guo)程中(zhong)(zhong)(zhong)苯類溶(rong)(rong)劑(ji)揮發不(bu)完全(quan)，包(bao)(bao)裝(zhuang)材(cai)(cai)料(liao)或容器生產設(she)備比(bi)較簡(jian)陋時有(you)可能造成(cheng)苯類物(wu)質在(zai)包(bao)(bao)裝(zhuang)材(cai)(cai)料(liao)中(zhong)(zhong)(zhong)殘留(liu)。食品(pin)包(bao)(bao)裝(zhuang)設(she)計(ji)過(guo)程中(zhong)(zhong)(zhong)苯類物(wu)質滲透到食品(pin)中(zhong)(zhong)(zhong)，會導致食品(pin)中(zhong)(zhong)(zhong)含有(you)苯。