芒果视频下载

保(bao)(bao)鮮(xian)膜在(zai)生產過程中(zhong)普(pu)遍(bian)添加了(le)塑化劑，保(bao)(bao)鮮(xian)膜對人體(ti)健康的影響也(ye)受到了(le)人們(men)的關注。

市場上(shang)的(de)保(bao)(bao)(bao)鮮(xian)膜(mo)大體(ti)分為(wei)兩(liang)類，一類是(shi)普通(tong)保(bao)(bao)(bao)鮮(xian)膜(mo)，適用(yong)于(yu)冰(bing)箱保(bao)(bao)(bao)鮮(xian)；一類是(shi)微波爐(lu)保(bao)(bao)(bao)鮮(xian)膜(mo)，既可(ke)用(yong)于(yu)冰(bing)箱保(bao)(bao)(bao)鮮(xian)，也(ye)可(ke)用(yong)于(yu)微波爐(lu)。后一種(zhong)保(bao)(bao)(bao)鮮(xian)膜(mo)在耐熱、無毒性等方面遠(yuan)遠(yuan)優(you)于(yu)普通(tong)保(bao)(bao)(bao)鮮(xian)膜(mo)。因此，消費者在使(shi)用(yong)選擇上(shang)要(yao)特別注意，分項使(shi)用(yong)。

購買保(bao)(bao)(bao)鮮(xian)(xian)(xian)膜時(shi)，首先建議(yi)購買聚乙烯（PE）材(cai)質(zhi)(zhi)制(zhi)成的(de)自粘(zhan)保(bao)(bao)(bao)鮮(xian)(xian)(xian)膜，尤(you)其(qi)是在(zai)為肉食(shi)、水(shui)果(guo)等進行保(bao)(bao)(bao)鮮(xian)(xian)(xian)時(shi)，因為從(cong)安(an)(an)全性上來講，PE材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)膜是最(zui)安(an)(an)全的(de)。如(ru)果(guo)希(xi)望保(bao)(bao)(bao)鮮(xian)(xian)(xian)期較長(chang)，建議(yi)選(xuan)擇聚偏二氯(lv)乙烯（PVDC），因為這種(zhong)材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)膜保(bao)(bao)(bao)濕(shi)性能(neng)比較好(hao)，在(zai)三種(zhong)材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)膜中保(bao)(bao)(bao)鮮(xian)(xian)(xian)期最(zui)長(chang)。聚氯(lv)乙烯（PVC）材(cai)質(zhi)(zhi)的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)膜由于透明度(du)好(hao)、粘(zhan)度(du)好(hao)、彈性好(hao)，價格較為便宜(yi)，所(suo)以也成為很多人的(de)選(xuan)擇，但(dan)一定要(yao)注意不能(neng)用來做油脂食(shi)品的(de)保(bao)(bao)(bao)鮮(xian)(xian)(xian)