主要(yao)毒性物(wu)質：苯(ben)被公認為致癌物(wu)質，但苯(ben)類是樹(shu)(shu)脂(zhi)材料的(de)良好溶(rong)(rong)劑(ji)(ji)，它具(ju)有(you)溶(rong)(rong)解性強，揮發速(su)度快，價格便宜等優點(dian)，因(yin)此(ci)被廣泛(fan)用(yong)于樹(shu)(shu)脂(zhi)的(de)溶(rong)(rong)劑(ji)(ji)。在包(bao)(bao)裝(zhuang)(zhuang)(zhuang)中(zhong)(zhong)(zhong)主要(yao)用(yong)于復(fu)合包(bao)(bao)裝(zhuang)(zhuang)(zhuang)材料粘和劑(ji)(ji)和塑料印刷(shua)(shua)油墨(mo)的(de)溶(rong)(rong)劑(ji)(ji)。由于在復(fu)合材料和塑料印刷(shua)(shua)過程中(zhong)(zhong)(zhong)苯(ben)類溶(rong)(rong)劑(ji)(ji)揮發不完全，包(bao)(bao)裝(zhuang)(zhuang)(zhuang)材料或(huo)容(rong)器生產設(she)備比較簡陋時有(you)可能造成苯(ben)類物(wu)質在包(bao)(bao)裝(zhuang)(zhuang)(zhuang)材料中(zhong)(zhong)(zhong)殘留。食(shi)品包(bao)(bao)裝(zhuang)(zhuang)(zhuang)設(she)計過程中(zhong)(zhong)(zhong)苯(ben)類物(wu)質滲透到食(shi)品中(zhong)(zhong)(zhong)，會導(dao)致食(shi)品中(zhong)(zhong)(zhong)含有(you)苯(ben)。