;真(zhen)(zhen)空充(chong)氣(qi)包裝(zhuang)(zhuang)的主要(yao)作用(yong)(yong)除(chu)(chu)真(zhen)(zhen)空包裝(zhuang)(zhuang)所(suo)具(ju)備的除(chu)(chu)氧保(bao)質(zhi)功能(neng)外，主要(yao)還有(you)(you)抗壓(ya)(ya)、阻(zu)氣(qi)、保(bao)鮮等(deng)作用(yong)(yong)，能(neng)更有(you)(you)效地使食(shi)(shi)(shi)品(pin)(pin)(pin)長期保(bao)持原有(you)(you)的色(se)、香、味、形及(ji)營(ying)養(yang)價(jia)值(zhi)。另外，有(you)(you)許多食(shi)(shi)(shi)品(pin)(pin)(pin)不(bu)適宜(yi)采(cai)用(yong)(yong)真(zhen)(zhen)空包裝(zhuang)(zhuang)而必須采(cai)用(yong)(yong)真(zhen)(zhen)空包裝(zhuang)(zhuang)機真(zhen)(zhen)空充(chong)氣(qi)包裝(zhuang)(zhuang)。如松(song)脆易碎食(shi)(shi)(shi)品(pin)(pin)(pin)，易結塊食(shi)(shi)(shi)品(pin)(pin)(pin)，易變形走油食(shi)(shi)(shi)品(pin)(pin)(pin)，有(you)(you)尖銳(rui)棱角或硬度較高會(hui)刺破包裝(zhuang)(zhuang)袋(dai)的食(shi)(shi)(shi)品(pin)(pin)(pin)等(deng)。食(shi)(shi)(shi)品(pin)(pin)(pin)經真(zhen)(zhen)空充(chong)氣(qi)包裝(zhuang)(zhuang)后，包裝(zhuang)(zhuang)袋(dai)內充(chong)氣(qi)壓(ya)(ya)強(qiang)大于(yu)包裝(zhuang)(zhuang)袋(dai)外大氣(qi)壓(ya)(ya)強(qiang)，能(neng)有(you)(you)效地防(fang)止食(shi)(shi)(shi)品(pin)(pin)(pin)受壓(ya)(ya)破碎變形并(bing)不(bu)影響包裝(zhuang)(zhuang)袋(dai)外觀(guan)及(ji)印刷裝(zhuang)(zhuang)潢。