主要毒性物(wu)質：苯被公認為(wei)致癌(ai)物(wu)質，但(dan)苯類是樹(shu)脂材料的良好溶(rong)(rong)(rong)劑(ji)(ji)，它具有(you)溶(rong)(rong)(rong)解性強(qiang)，揮(hui)(hui)發速度快，價格便(bian)宜等優點，因(yin)此(ci)被廣泛用(yong)于樹(shu)脂的溶(rong)(rong)(rong)劑(ji)(ji)。在包裝(zhuang)(zhuang)中(zhong)(zhong)主要用(yong)于復合包裝(zhuang)(zhuang)材料粘(zhan)和(he)劑(ji)(ji)和(he)塑料印刷油墨的溶(rong)(rong)(rong)劑(ji)(ji)。由于在復合材料和(he)塑料印刷過程中(zhong)(zhong)苯類溶(rong)(rong)(rong)劑(ji)(ji)揮(hui)(hui)發不完全，包裝(zhuang)(zhuang)材料或容器生產設備比較簡陋(lou)時有(you)可能(neng)造成苯類物(wu)質在包裝(zhuang)(zhuang)材料中(zhong)(zhong)殘留(liu)。食(shi)(shi)品包裝(zhuang)(zhuang)設計過程中(zhong)(zhong)苯類物(wu)質滲透到食(shi)(shi)品中(zhong)(zhong)，會導(dao)致食(shi)(shi)品中(zhong)(zhong)含有(you)苯。