采用真空(kong)包(bao)裝機包(bao)裝物(wu)品其特點(dian)有以下幾個方面:一是(shi)(shi)排除了(le)包(bao)裝容(rong)器(qi)(qi)中的部分空(kong)氣(qi)(qi)(qi)(氧氣(qi)(qi)(qi)),能(neng)有效(xiao)地(di)防止食品腐敗(bai)變質.二是(shi)(shi)采用阻隔性(xing)(氣(qi)(qi)(qi)密性(xing))優良的包(bao)裝材料及(ji)嚴格(ge)的密封(feng)技術和要求,能(neng)有效(xiao)防止包(bao)裝內(nei)物(wu)品的交(jiao)換(huan),即可避(bi)免減(jian)重、失味,又可防止二次污染.三是(shi)(shi)真空(kong)包(bao)裝容(rong)器(qi)(qi)內(nei)部氣(qi)(qi)(qi)體已(yi)排除,加速了(le)熱(re)量的傳導,這(zhe)即可提高(gao)殺(sha)菌(jun)效(xiao)率,也避(bi)免了(le)加熱(re)殺(sha)菌(jun)時,由于氣(qi)(qi)(qi)體的膨脹而使包(bao)裝容(rong)器(qi)(qi)破裂.