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保鮮膜(mo)在生(sheng)產過(guo)程中(zhong)普遍添加了塑化劑，保鮮膜(mo)對(dui)人體健(jian)康的影響也受到了人們的關注。

市場(chang)上(shang)(shang)的保鮮(xian)膜大體分(fen)為兩類，一類是普(pu)通(tong)保鮮(xian)膜，適用(yong)(yong)于(yu)冰箱保鮮(xian)；一類是微波(bo)爐(lu)保鮮(xian)膜，既可用(yong)(yong)于(yu)冰箱保鮮(xian)，也可用(yong)(yong)于(yu)微波(bo)爐(lu)。后一種保鮮(xian)膜在(zai)耐熱、無毒性等方面遠遠優于(yu)普(pu)通(tong)保鮮(xian)膜。因此，消費者在(zai)使(shi)用(yong)(yong)選擇上(shang)(shang)要特別注意(yi)，分(fen)項使(shi)用(yong)(yong)。

購(gou)買保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)膜時，首先建(jian)議購(gou)買聚乙烯（PE）材(cai)質制成(cheng)的(de)自粘保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)膜，尤其是(shi)在(zai)為(wei)肉食、水(shui)果等(deng)進行(xing)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)時，因為(wei)從安全性上(shang)來講，PE材(cai)質的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)膜是(shi)最(zui)(zui)安全的(de)。如果希望保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)期(qi)較(jiao)長，建(jian)議選(xuan)擇聚偏二(er)氯乙烯（PVDC），因為(wei)這種材(cai)質的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)膜保(bao)(bao)(bao)濕性能比較(jiao)好(hao)，在(zai)三種材(cai)質的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)膜中保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)期(qi)最(zui)(zui)長。聚氯乙烯（PVC）材(cai)質的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)膜由于透明度好(hao)、粘度好(hao)、彈(dan)性好(hao)，價格較(jiao)為(wei)便宜，所以也成(cheng)為(wei)很(hen)多(duo)人的(de)選(xuan)擇，但一(yi)定(ding)要(yao)注(zhu)意不能用來做油(you)脂食品(pin)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)(xian)