真空充(chong)氣包(bao)(bao)裝(zhuang)(zhuang)的主(zhu)要作(zuo)用(yong)(yong)(yong)(yong)除真空包(bao)(bao)裝(zhuang)(zhuang)所具(ju)備(bei)的除氧保(bao)質功能(neng)外(wai)，主(zhu)要 還有(you)(you)抗(kang)壓(ya)、阻氣、保(bao)鮮等(deng)(deng)作(zuo)用(yong)(yong)(yong)(yong)，能(neng)更有(you)(you)效地 使(shi)食(shi)(shi)(shi)品(pin)(pin)長期保(bao)持原有(you)(you)的色、香、味、形(xing)(xing)及(ji)營(ying)養價(jia)值。另(ling)外(wai)，有(you)(you)許多食(shi)(shi)(shi)品(pin)(pin)不(bu)適宜采(cai)用(yong)(yong)(yong)(yong)真空包(bao)(bao)裝(zhuang)(zhuang)而必須采(cai)用(yong)(yong)(yong)(yong)真空充(chong)氣包(bao)(bao)裝(zhuang)(zhuang)。如松脆易(yi)碎食(shi)(shi)(shi)品(pin)(pin)，易(yi)結塊食(shi)(shi)(shi)品(pin)(pin)，易(yi)變形(xing)(xing)走油食(shi)(shi)(shi)品(pin)(pin)，有(you)(you)尖銳棱角或硬(ying)度較高會刺破(po)包(bao)(bao)裝(zhuang)(zhuang)袋的食(shi)(shi)(shi)品(pin)(pin)等(deng)(deng)。食(shi)(shi)(shi)品(pin)(pin)經真空充(chong)氣包(bao)(bao)裝(zhuang)(zhuang)后，包(bao)(bao)裝(zhuang)(zhuang)袋內充(chong)氣壓(ya)強大于包(bao)(bao)裝(zhuang)(zhuang)袋外(wai)大氣壓(ya)強，能(neng)有(you)(you)效地防(fang)止食(shi)(shi)(shi)品(pin)(pin)受(shou)壓(ya)破(po)碎變形(xing)(xing)并不(bu)影響(xiang)包(bao)(bao)裝(zhuang)(zhuang)袋外(wai)觀(guan)及(ji) 印刷(shua)裝(zhuang)(zhuang)潢。