真(zhen)(zhen)空(kong)充(chong)氣(qi)(qi)包(bao)裝(zhuang)(zhuang)的(de)主要作(zuo)用(yong)除(chu)真(zhen)(zhen)空(kong)包(bao)裝(zhuang)(zhuang)所具備的(de)除(chu)氧(yang)保質功能(neng)外(wai)，主要還有(you)抗壓(ya)、阻氣(qi)(qi)、保鮮(xian)等作(zuo)用(yong)，能(neng)更有(you)效(xiao)地使食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)長(chang)期保持原(yuan)有(you)的(de)色(se)、香、味、形(xing)及(ji)營(ying)養價值。另(ling)外(wai)，有(you)許多食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)不適宜采用(yong)真(zhen)(zhen)空(kong)包(bao)裝(zhuang)(zhuang)而必須采用(yong)真(zhen)(zhen)空(kong)包(bao)裝(zhuang)(zhuang)機真(zhen)(zhen)空(kong)充(chong)氣(qi)(qi)包(bao)裝(zhuang)(zhuang)。如松脆易(yi)碎食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)，易(yi)結塊食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)，易(yi)變(bian)形(xing)走油食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)，有(you)尖銳棱角或硬(ying)度較(jiao)高(gao)會刺破包(bao)裝(zhuang)(zhuang)袋(dai)(dai)的(de)食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)等。食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)經(jing)真(zhen)(zhen)空(kong)充(chong)氣(qi)(qi)包(bao)裝(zhuang)(zhuang)后，包(bao)裝(zhuang)(zhuang)袋(dai)(dai)內充(chong)氣(qi)(qi)壓(ya)強大(da)于(yu)包(bao)裝(zhuang)(zhuang)袋(dai)(dai)外(wai)大(da)氣(qi)(qi)壓(ya)強，能(neng)有(you)效(xiao)地防止食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)受壓(ya)破碎變(bian)形(xing)并(bing)不影(ying)響包(bao)裝(zhuang)(zhuang)袋(dai)(dai)外(wai)觀及(ji)印刷(shua)裝(zhuang)(zhuang)潢。