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保鮮膜在生產(chan)過程(cheng)中普遍添加(jia)了塑化劑(ji)，保鮮膜對人體(ti)健康的影響也受(shou)到(dao)了人們的關注。

市場上的保(bao)鮮(xian)(xian)膜(mo)(mo)(mo)大(da)體分為兩(liang)類，一類是普通保(bao)鮮(xian)(xian)膜(mo)(mo)(mo)，適用于(yu)冰箱保(bao)鮮(xian)(xian)；一類是微(wei)波爐(lu)保(bao)鮮(xian)(xian)膜(mo)(mo)(mo)，既可用于(yu)冰箱保(bao)鮮(xian)(xian)，也(ye)可用于(yu)微(wei)波爐(lu)。后一種保(bao)鮮(xian)(xian)膜(mo)(mo)(mo)在耐熱、無毒性(xing)等方面遠遠優于(yu)普通保(bao)鮮(xian)(xian)膜(mo)(mo)(mo)。因此(ci)，消費者(zhe)在使(shi)用選擇上要(yao)特(te)別注意，分項使(shi)用。

購買(mai)保(bao)(bao)鮮(xian)(xian)(xian)膜時，首先建議購買(mai)聚(ju)乙烯(xi)（PE）材(cai)質制成的(de)自粘保(bao)(bao)鮮(xian)(xian)(xian)膜，尤其是(shi)在為(wei)(wei)肉食(shi)、水果等進行保(bao)(bao)鮮(xian)(xian)(xian)時，因(yin)為(wei)(wei)從安(an)(an)全性(xing)上(shang)來講，PE材(cai)質的(de)保(bao)(bao)鮮(xian)(xian)(xian)膜是(shi)最(zui)安(an)(an)全的(de)。如果希望保(bao)(bao)鮮(xian)(xian)(xian)期較長，建議選(xuan)擇(ze)(ze)聚(ju)偏二氯(lv)乙烯(xi)（PVDC），因(yin)為(wei)(wei)這種材(cai)質的(de)保(bao)(bao)鮮(xian)(xian)(xian)膜保(bao)(bao)濕性(xing)能(neng)比較好，在三種材(cai)質的(de)保(bao)(bao)鮮(xian)(xian)(xian)膜中保(bao)(bao)鮮(xian)(xian)(xian)期最(zui)長。聚(ju)氯(lv)乙烯(xi)（PVC）材(cai)質的(de)保(bao)(bao)鮮(xian)(xian)(xian)膜由于透明(ming)度(du)好、粘度(du)好、彈性(xing)好，價格較為(wei)(wei)便宜，所以也(ye)成為(wei)(wei)很(hen)多人的(de)選(xuan)擇(ze)(ze)，但一定要注意不能(neng)用來做油(you)脂食(shi)品的(de)保(bao)(bao)鮮(xian)(xian)(xian)