現(xian)在(zai)市(shi)場(chang)基本有(you)兩(liang)種(zhong)(zhong)包(bao)(bao)(bao)裝(zhuang)形(xing)式,一種(zhong)(zhong)為普(pu)通的(de)(de)包(bao)(bao)(bao)裝(zhuang),利用(yong)(yong)聚(ju)丙稀塑(su)料編織袋對(dui)大(da)(da)(da)米(mi)(mi)進(jin)行包(bao)(bao)(bao)裝(zhuang),包(bao)(bao)(bao)裝(zhuang)過程(cheng)中(zhong)不(bu)施加任何的(de)(de)保(bao)鮮技術,這(zhe)種(zhong)(zhong)包(bao)(bao)(bao)裝(zhuang)對(dui)于(yu)大(da)(da)(da)米(mi)(mi)的(de)(de)防蟲及防霉等(deng)方面的(de)(de)效果差。還有(you)一種(zhong)(zhong)是用(yong)(yong)真空(kong)(kong)包(bao)(bao)(bao)裝(zhuang)技術對(dui)包(bao)(bao)(bao)裝(zhuang)袋進(jin)行抽真空(kong)(kong),真空(kong)(kong)鈄技術對(dui)大(da)(da)(da)米(mi)(mi)的(de)(de)儲存(cun)有(you)較好的(de)(de)保(bao)鮮作用(yong)(yong),但用(yong)(yong)于(yu)大(da)(da)(da)米(mi)(mi)自(zi)身的(de)(de)形(xing)狀及真空(kong)(kong)度的(de)(de)選擇并不(bu)合(he)適,目前大(da)(da)(da)米(mi)(mi)真空(kong)(kong)包(bao)(bao)(bao)裝(zhuang)選用(yong)(yong)的(de)(de)真空(kong)(kong)度一般(ban)在(zai)-0.07~-0.09kPa之間,只要(yao)真空(kong)(kong)度在(zai)范圍內,所出廠的(de)(de)就是合(he)格(ge)產品。
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