芒果视频下载

保(bao)鮮(xian)膜在(zai)生(sheng)產(chan)過程中普(pu)遍添(tian)加了(le)(le)塑化劑，保(bao)鮮(xian)膜對人體(ti)健(jian)康的影(ying)響也受到了(le)(le)人們的關注。

市場(chang)上(shang)的(de)保(bao)(bao)鮮(xian)(xian)膜大體分為兩(liang)類(lei)，一(yi)類(lei)是普通保(bao)(bao)鮮(xian)(xian)膜，適用(yong)于(yu)冰箱保(bao)(bao)鮮(xian)(xian)；一(yi)類(lei)是微波(bo)爐保(bao)(bao)鮮(xian)(xian)膜，既(ji)可用(yong)于(yu)冰箱保(bao)(bao)鮮(xian)(xian)，也可用(yong)于(yu)微波(bo)爐。后一(yi)種保(bao)(bao)鮮(xian)(xian)膜在(zai)耐熱、無毒性等方面遠(yuan)遠(yuan)優于(yu)普通保(bao)(bao)鮮(xian)(xian)膜。因此，消費者在(zai)使用(yong)選擇上(shang)要特(te)別注意，分項使用(yong)。

購買保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜時，首先(xian)建議購買聚(ju)(ju)乙(yi)烯(xi)(xi)（PE）材(cai)(cai)(cai)質(zhi)制成(cheng)的(de)(de)(de)(de)自粘保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜，尤其(qi)是在(zai)為(wei)肉食、水果等進(jin)行(xing)保(bao)(bao)鮮(xian)(xian)(xian)(xian)時，因(yin)為(wei)從安(an)全性上(shang)來(lai)講，PE材(cai)(cai)(cai)質(zhi)的(de)(de)(de)(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜是最安(an)全的(de)(de)(de)(de)。如果希望保(bao)(bao)鮮(xian)(xian)(xian)(xian)期(qi)較(jiao)(jiao)長，建議選(xuan)擇(ze)聚(ju)(ju)偏二(er)氯乙(yi)烯(xi)(xi)（PVDC），因(yin)為(wei)這種材(cai)(cai)(cai)質(zhi)的(de)(de)(de)(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜保(bao)(bao)濕性能比(bi)較(jiao)(jiao)好，在(zai)三種材(cai)(cai)(cai)質(zhi)的(de)(de)(de)(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜中(zhong)保(bao)(bao)鮮(xian)(xian)(xian)(xian)期(qi)最長。聚(ju)(ju)氯乙(yi)烯(xi)(xi)（PVC）材(cai)(cai)(cai)質(zhi)的(de)(de)(de)(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)膜由于透明度(du)好、粘度(du)好、彈性好，價(jia)格較(jiao)(jiao)為(wei)便宜，所以也成(cheng)為(wei)很(hen)多人的(de)(de)(de)(de)選(xuan)擇(ze)，但一定要注意不能用來(lai)做油脂食品的(de)(de)(de)(de)保(bao)(bao)鮮(xian)(xian)(xian)(xian)