主要毒性物(wu)質(zhi)：苯被公認(ren)為致癌(ai)物(wu)質(zhi)，但(dan)苯類(lei)是樹脂(zhi)材(cai)料的(de)(de)良(liang)好溶(rong)(rong)劑(ji)，它具(ju)有溶(rong)(rong)解性強，揮(hui)發速(su)度快，價格便宜(yi)等優點，因此被廣泛用于樹脂(zhi)的(de)(de)溶(rong)(rong)劑(ji)。在包(bao)(bao)(bao)裝(zhuang)中(zhong)(zhong)主要用于復(fu)合(he)包(bao)(bao)(bao)裝(zhuang)材(cai)料粘和(he)(he)劑(ji)和(he)(he)塑料印刷(shua)(shua)油墨的(de)(de)溶(rong)(rong)劑(ji)。由于在復(fu)合(he)材(cai)料和(he)(he)塑料印刷(shua)(shua)過程中(zhong)(zhong)苯類(lei)溶(rong)(rong)劑(ji)揮(hui)發不完全，包(bao)(bao)(bao)裝(zhuang)材(cai)料或(huo)容器生產設(she)備比較簡陋時有可(ke)能造成苯類(lei)物(wu)質(zhi)在包(bao)(bao)(bao)裝(zhuang)材(cai)料中(zhong)(zhong)殘(can)留。食(shi)品包(bao)(bao)(bao)裝(zhuang)設(she)計過程中(zhong)(zhong)苯類(lei)物(wu)質(zhi)滲透(tou)到(dao)食(shi)品中(zhong)(zhong)，會導致食(shi)品中(zhong)(zhong)含有苯。