真(zhen)空(kong)(kong)充氣(qi)(qi)包(bao)(bao)(bao)裝的(de)主(zhu)要(yao)作用(yong)(yong)除真(zhen)空(kong)(kong)包(bao)(bao)(bao)裝所具備的(de)除氧(yang)保(bao)(bao)質功能外，主(zhu)要(yao) 還有(you)抗壓(ya)(ya)、阻(zu)氣(qi)(qi)、保(bao)(bao)鮮等作用(yong)(yong)，能更(geng)有(you)效地 使食(shi)品(pin)(pin)長期保(bao)(bao)持原有(you)的(de)色、香、味、形及營養價值。另外，有(you)許多食(shi)品(pin)(pin)不(bu)適宜采(cai)用(yong)(yong)真(zhen)空(kong)(kong)包(bao)(bao)(bao)裝而必(bi)須采(cai)用(yong)(yong)真(zhen)空(kong)(kong)充氣(qi)(qi)包(bao)(bao)(bao)裝。如松脆易(yi)(yi)碎食(shi)品(pin)(pin)，易(yi)(yi)結(jie)塊食(shi)品(pin)(pin)，易(yi)(yi)變(bian)形走油(you)食(shi)品(pin)(pin)，有(you)尖(jian)銳棱角或(huo)硬度較高會刺破包(bao)(bao)(bao)裝袋的(de)食(shi)品(pin)(pin)等。食(shi)品(pin)(pin)經真(zhen)空(kong)(kong)充氣(qi)(qi)包(bao)(bao)(bao)裝后(hou)，包(bao)(bao)(bao)裝袋內充氣(qi)(qi)壓(ya)(ya)強大于包(bao)(bao)(bao)裝袋外大氣(qi)(qi)壓(ya)(ya)強，能有(you)效地防止食(shi)品(pin)(pin)受壓(ya)(ya)破碎變(bian)形并不(bu)影響包(bao)(bao)(bao)裝袋外觀及 印刷裝潢。