自50年代塑料(liao)薄膜勝利地應用于商品包裝(zhuang)以來，真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)技術得到(dao)迅(xun)速的(de)(de)發(fa)展。60、70年代真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)主要用于肉類食品。德(de)國是世界上包裝(zhuang)工(gong)業最(zui)發(fa)達的(de)(de)國家(jia)之(zhi)一，其(qi)真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)機(ji)及真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)技術享有(you)盛名。克萊默(mo)爾·格雷伯(bo)機(ji)械(xie)制(zhi)造公司(si)1965年開始生產熱成型真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)機(ji)，對肉類的(de)(de)真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)進行了大量(liang)(liang)的(de)(de)研究，取得了許多效果(guo)，如對烤肉的(de)(de)包裝(zhuang)，抽(chou)真(zhen)空(kong)(kong)(kong)(kong)(kong)后加適(shi)量(liang)(liang)的(de)(de)氧(yang)氣；對含有(you)40％脂肪的(de)(de)香腸(chang)，抽(chou)真(zhen)空(kong)(kong)(kong)(kong)(kong)后加適(shi)量(liang)(liang)的(de)(de)二(er)氧(yang)化(hua)碳(tan)；對面包、花(hua)生抽(chou)真(zhen)空(kong)(kong)(kong)(kong)(kong)后充(chong)氮氣和(he)適(shi)量(liang)(liang)的(de)(de)二(er)氧(yang)化(hua)碳(tan)等等達到(dao)預定(ding)真(zhen)空(kong)(kong)(kong)(kong)(kong)度后，真(zhen)空(kong)(kong)(kong)(kong)(kong)包裝(zhuang)將食品裝(zhuang)入包裝(zhuang)袋抽(chou)出包裝(zhuang)袋內(nei)的(de)(de)空(kong)(kong)(kong)(kong)(kong)氣。完(wan)成封(feng)口工(gong)序。