主(zhu)要毒性物(wu)(wu)質(zhi)：苯(ben)(ben)被公認為致癌物(wu)(wu)質(zhi)，但苯(ben)(ben)類(lei)是樹(shu)(shu)脂材(cai)料(liao)(liao)(liao)(liao)的良好溶(rong)(rong)(rong)劑(ji)，它(ta)具有溶(rong)(rong)(rong)解性強，揮發(fa)速度快，價格便(bian)宜等優點，因(yin)此被廣泛(fan)用于(yu)樹(shu)(shu)脂的溶(rong)(rong)(rong)劑(ji)。在(zai)包(bao)裝(zhuang)(zhuang)中(zhong)主(zhu)要用于(yu)復合包(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)(liao)(liao)粘和(he)劑(ji)和(he)塑(su)料(liao)(liao)(liao)(liao)印刷(shua)油墨的溶(rong)(rong)(rong)劑(ji)。由(you)于(yu)在(zai)復合材(cai)料(liao)(liao)(liao)(liao)和(he)塑(su)料(liao)(liao)(liao)(liao)印刷(shua)過(guo)程中(zhong)苯(ben)(ben)類(lei)溶(rong)(rong)(rong)劑(ji)揮發(fa)不完全，包(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)(liao)(liao)或(huo)容器生產(chan)設備比(bi)較(jiao)簡陋時有可(ke)能造成苯(ben)(ben)類(lei)物(wu)(wu)質(zhi)在(zai)包(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)(liao)(liao)中(zhong)殘留(liu)。食(shi)品包(bao)裝(zhuang)(zhuang)設計過(guo)程中(zhong)苯(ben)(ben)類(lei)物(wu)(wu)質(zhi)滲透到食(shi)品中(zhong)，會導(dao)致食(shi)品中(zhong)含有苯(ben)(ben)。