真(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)(qi)包(bao)(bao)(bao)裝的(de)主(zhu)要作用(yong)(yong)除(chu)(chu)真(zhen)(zhen)空(kong)(kong)包(bao)(bao)(bao)裝所具備的(de)除(chu)(chu)氧保(bao)質功能(neng)外，主(zhu)要 還有(you)(you)(you)抗壓(ya)、阻氣(qi)(qi)、保(bao)鮮(xian)等作用(yong)(yong)，能(neng)更有(you)(you)(you)效地 使食品長期(qi)保(bao)持原有(you)(you)(you)的(de)色、香、味、形及營(ying)養價(jia)值(zhi)。另外，有(you)(you)(you)許(xu)多(duo)食品不(bu)適宜(yi)采(cai)(cai)用(yong)(yong)真(zhen)(zhen)空(kong)(kong)包(bao)(bao)(bao)裝而必須采(cai)(cai)用(yong)(yong)真(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)(qi)包(bao)(bao)(bao)裝。如松脆易碎(sui)(sui)食品，易結塊食品，易變形走油食品，有(you)(you)(you)尖銳棱角或硬(ying)度(du)較高會刺(ci)破(po)包(bao)(bao)(bao)裝袋(dai)的(de)食品等。食品經真(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)(qi)包(bao)(bao)(bao)裝后，包(bao)(bao)(bao)裝袋(dai)內充(chong)氣(qi)(qi)壓(ya)強(qiang)大于(yu)包(bao)(bao)(bao)裝袋(dai)外大氣(qi)(qi)壓(ya)強(qiang)，能(neng)有(you)(you)(you)效地防(fang)止食品受(shou)壓(ya)破(po)碎(sui)(sui)變形并不(bu)影(ying)響包(bao)(bao)(bao)裝袋(dai)外觀及 印刷裝潢。