真(zhen)空(kong)充(chong)(chong)氣包(bao)(bao)裝(zhuang)(zhuang)的(de)主(zhu)要(yao)作(zuo)用(yong)除真(zhen)空(kong)包(bao)(bao)裝(zhuang)(zhuang)所(suo)具備的(de)除氧保質功能(neng)外(wai)，主(zhu)要(yao) 還有(you)抗壓、阻氣、保鮮(xian)等作(zuo)用(yong)，能(neng)更有(you)效地 使食(shi)(shi)(shi)(shi)品(pin)(pin)長期保持(chi)原有(you)的(de)色(se)、香、味、形(xing)及營養價值。另(ling)外(wai)，有(you)許多食(shi)(shi)(shi)(shi)品(pin)(pin)不適宜采(cai)用(yong)真(zhen)空(kong)包(bao)(bao)裝(zhuang)(zhuang)而必須采(cai)用(yong)真(zhen)空(kong)充(chong)(chong)氣包(bao)(bao)裝(zhuang)(zhuang)。如松脆易(yi)碎(sui)食(shi)(shi)(shi)(shi)品(pin)(pin)，易(yi)結塊食(shi)(shi)(shi)(shi)品(pin)(pin)，易(yi)變(bian)形(xing)走油食(shi)(shi)(shi)(shi)品(pin)(pin)，有(you)尖銳棱角或硬度較高會刺破包(bao)(bao)裝(zhuang)(zhuang)袋(dai)的(de)食(shi)(shi)(shi)(shi)品(pin)(pin)等。食(shi)(shi)(shi)(shi)品(pin)(pin)經真(zhen)空(kong)充(chong)(chong)氣包(bao)(bao)裝(zhuang)(zhuang)后，包(bao)(bao)裝(zhuang)(zhuang)袋(dai)內充(chong)(chong)氣壓強(qiang)大(da)(da)于包(bao)(bao)裝(zhuang)(zhuang)袋(dai)外(wai)大(da)(da)氣壓強(qiang)，能(neng)有(you)效地防止食(shi)(shi)(shi)(shi)品(pin)(pin)受壓破碎(sui)變(bian)形(xing)并(bing)不影響包(bao)(bao)裝(zhuang)(zhuang)袋(dai)外(wai)觀(guan)及 印刷(shua)裝(zhuang)(zhuang)潢。