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保鮮膜在生(sheng)產過(guo)程中普遍添(tian)加了(le)塑化劑，保鮮膜對人體(ti)健康的(de)影響也(ye)受(shou)到了(le)人們的(de)關注。

市場上的保(bao)鮮(xian)膜(mo)大體分為兩類(lei)(lei)，一(yi)類(lei)(lei)是普通(tong)保(bao)鮮(xian)膜(mo)，適(shi)用(yong)于(yu)冰箱保(bao)鮮(xian)；一(yi)類(lei)(lei)是微(wei)波(bo)爐保(bao)鮮(xian)膜(mo)，既可(ke)用(yong)于(yu)冰箱保(bao)鮮(xian)，也可(ke)用(yong)于(yu)微(wei)波(bo)爐。后(hou)一(yi)種保(bao)鮮(xian)膜(mo)在耐(nai)熱、無毒性(xing)等方面遠遠優于(yu)普通(tong)保(bao)鮮(xian)膜(mo)。因此，消費者在使(shi)用(yong)選擇(ze)上要特別注意，分項使(shi)用(yong)。

購買保(bao)(bao)(bao)(bao)鮮(xian)(xian)膜(mo)時，首先建議購買聚乙烯（PE）材質(zhi)(zhi)(zhi)制成的自粘(zhan)保(bao)(bao)(bao)(bao)鮮(xian)(xian)膜(mo)，尤其是在為(wei)肉食、水果(guo)等進行保(bao)(bao)(bao)(bao)鮮(xian)(xian)時，因為(wei)從(cong)安全性(xing)(xing)上來講，PE材質(zhi)(zhi)(zhi)的保(bao)(bao)(bao)(bao)鮮(xian)(xian)膜(mo)是最(zui)安全的。如果(guo)希(xi)望保(bao)(bao)(bao)(bao)鮮(xian)(xian)期(qi)較長，建議選擇聚偏二(er)氯(lv)乙烯（PVDC），因為(wei)這種材質(zhi)(zhi)(zhi)的保(bao)(bao)(bao)(bao)鮮(xian)(xian)膜(mo)保(bao)(bao)(bao)(bao)濕性(xing)(xing)能比較好(hao)，在三種材質(zhi)(zhi)(zhi)的保(bao)(bao)(bao)(bao)鮮(xian)(xian)膜(mo)中保(bao)(bao)(bao)(bao)鮮(xian)(xian)期(qi)最(zui)長。聚氯(lv)乙烯（PVC）材質(zhi)(zhi)(zhi)的保(bao)(bao)(bao)(bao)鮮(xian)(xian)膜(mo)由于(yu)透明度(du)好(hao)、粘(zhan)度(du)好(hao)、彈性(xing)(xing)好(hao)，價格較為(wei)便宜，所以也成為(wei)很(hen)多人的選擇，但一定要注(zhu)意不能用來做油脂食品的保(bao)(bao)(bao)(bao)鮮(xian)(xian)