自50年代(dai)塑料薄膜勝利地(di)應(ying)用于商品包裝以來，真(zhen)空(kong)(kong)(kong)包裝技(ji)術得到迅速的發(fa)展。60、70年代(dai)真(zhen)空(kong)(kong)(kong)包裝主要用于肉(rou)類食品。德(de)國是(shi)世界上包裝工(gong)業最發(fa)達的國家之一，其真(zhen)空(kong)(kong)(kong)包裝機(ji)及真(zhen)空(kong)(kong)(kong)包裝技(ji)術享有盛名(ming)。克萊默爾·格雷伯機(ji)械制造公(gong)司1965年開始生產熱成型真(zhen)空(kong)(kong)(kong)包裝機(ji)，對(dui)(dui)肉(rou)類的真(zhen)空(kong)(kong)(kong)包裝進行(xing)了大(da)量(liang)的研究，取得了許多(duo)效(xiao)果，如(ru)對(dui)(dui)烤肉(rou)的包裝，抽(chou)(chou)真(zhen)空(kong)(kong)(kong)后(hou)(hou)加適(shi)量(liang)的氧氣；對(dui)(dui)含(han)有40％脂肪的香(xiang)腸，抽(chou)(chou)真(zhen)空(kong)(kong)(kong)后(hou)(hou)加適(shi)量(liang)的二氧化(hua)碳(tan)；對(dui)(dui)面包、花(hua)生抽(chou)(chou)真(zhen)空(kong)(kong)(kong)后(hou)(hou)充氮(dan)氣和適(shi)量(liang)的二氧化(hua)碳(tan)等等達到預定真(zhen)空(kong)(kong)(kong)度后(hou)(hou)，真(zhen)空(kong)(kong)(kong)包裝將食品裝入包裝袋抽(chou)(chou)出包裝袋內的空(kong)(kong)(kong)氣。完成封口工(gong)序(xu)。