主要毒性(xing)物(wu)質(zhi)：苯(ben)(ben)被公(gong)認為致癌物(wu)質(zhi)，但苯(ben)(ben)類是樹脂(zhi)材(cai)(cai)料的(de)良(liang)好溶劑，它具(ju)有溶解(jie)性(xing)強，揮(hui)發速度快，價(jia)格(ge)便(bian)宜等優(you)點，因此被廣泛用于(yu)樹脂(zhi)的(de)溶劑。在(zai)包(bao)裝中(zhong)(zhong)(zhong)主要用于(yu)復(fu)合包(bao)裝材(cai)(cai)料粘和(he)劑和(he)塑料印(yin)刷油墨的(de)溶劑。由于(yu)在(zai)復(fu)合材(cai)(cai)料和(he)塑料印(yin)刷過程(cheng)中(zhong)(zhong)(zhong)苯(ben)(ben)類溶劑揮(hui)發不完全，包(bao)裝材(cai)(cai)料或容器生產(chan)設備(bei)比(bi)較簡陋時有可能(neng)造成苯(ben)(ben)類物(wu)質(zhi)在(zai)包(bao)裝材(cai)(cai)料中(zhong)(zhong)(zhong)殘留。食(shi)品包(bao)裝設計(ji)過程(cheng)中(zhong)(zhong)(zhong)苯(ben)(ben)類物(wu)質(zhi)滲透到食(shi)品中(zhong)(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)(zhong)含有苯(ben)(ben)。