主要(yao)毒性物質：苯被公(gong)認為致癌物質，但苯類是樹脂材(cai)料(liao)(liao)(liao)(liao)的(de)良(liang)好溶(rong)(rong)劑(ji)，它具(ju)有溶(rong)(rong)解性強，揮發速度(du)快，價格(ge)便宜等優點，因此被廣泛用于(yu)樹脂的(de)溶(rong)(rong)劑(ji)。在(zai)包(bao)裝(zhuang)(zhuang)中(zhong)(zhong)主要(yao)用于(yu)復(fu)(fu)合包(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)(liao)(liao)粘和劑(ji)和塑(su)料(liao)(liao)(liao)(liao)印刷油墨的(de)溶(rong)(rong)劑(ji)。由于(yu)在(zai)復(fu)(fu)合材(cai)料(liao)(liao)(liao)(liao)和塑(su)料(liao)(liao)(liao)(liao)印刷過程中(zhong)(zhong)苯類溶(rong)(rong)劑(ji)揮發不完全(quan)，包(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)(liao)(liao)或容(rong)器生產設備比較簡(jian)陋時有可能造(zao)成苯類物質在(zai)包(bao)裝(zhuang)(zhuang)材(cai)料(liao)(liao)(liao)(liao)中(zhong)(zhong)殘留。食(shi)品(pin)包(bao)裝(zhuang)(zhuang)設計過程中(zhong)(zhong)苯類物質滲(shen)透到(dao)食(shi)品(pin)中(zhong)(zhong)，會導致食(shi)品(pin)中(zhong)(zhong)含有苯。