真(zhen)(zhen)空(kong)充(chong)氣(qi)包(bao)(bao)裝(zhuang)的(de)主要(yao)作(zuo)用(yong)(yong)除(chu)真(zhen)(zhen)空(kong)包(bao)(bao)裝(zhuang)所具備的(de)除(chu)氧保(bao)質功能(neng)(neng)(neng)外(wai)，主要(yao) 還有(you)抗壓、阻(zu)氣(qi)、保(bao)鮮(xian)等作(zuo)用(yong)(yong)，能(neng)(neng)(neng)更有(you)效(xiao)地(di) 使(shi)食(shi)(shi)品(pin)(pin)長期保(bao)持原(yuan)有(you)的(de)色、香、味、形(xing)及(ji)營養價值。另(ling)外(wai)，有(you)許多食(shi)(shi)品(pin)(pin)不適(shi)宜采用(yong)(yong)真(zhen)(zhen)空(kong)包(bao)(bao)裝(zhuang)而必須(xu)采用(yong)(yong)真(zhen)(zhen)空(kong)充(chong)氣(qi)包(bao)(bao)裝(zhuang)。如松脆易碎(sui)食(shi)(shi)品(pin)(pin)，易結(jie)塊食(shi)(shi)品(pin)(pin)，易變形(xing)走油食(shi)(shi)品(pin)(pin)，有(you)尖銳(rui)棱角或硬度(du)較高會刺破包(bao)(bao)裝(zhuang)袋(dai)(dai)的(de)食(shi)(shi)品(pin)(pin)等。食(shi)(shi)品(pin)(pin)經(jing)真(zhen)(zhen)空(kong)充(chong)氣(qi)包(bao)(bao)裝(zhuang)后(hou)，包(bao)(bao)裝(zhuang)袋(dai)(dai)內充(chong)氣(qi)壓強(qiang)大于包(bao)(bao)裝(zhuang)袋(dai)(dai)外(wai)大氣(qi)壓強(qiang)，能(neng)(neng)(neng)有(you)效(xiao)地(di)防止(zhi)食(shi)(shi)品(pin)(pin)受壓破碎(sui)變形(xing)并不影響包(bao)(bao)裝(zhuang)袋(dai)(dai)外(wai)觀及(ji) 印(yin)刷(shua)裝(zhuang)潢。