真(zhen)空(kong)(kong)充(chong)(chong)(chong)氣(qi)包(bao)裝的(de)(de)主要(yao)作用(yong)除(chu)真(zhen)空(kong)(kong)包(bao)裝所具備的(de)(de)除(chu)氧保質(zhi)功能外(wai)，主要(yao)還有(you)抗壓、阻氣(qi)、保鮮等作用(yong)，能更有(you)效(xiao)(xiao)地(di)使食(shi)(shi)(shi)品(pin)(pin)(pin)長期保持原有(you)的(de)(de)色(se)、香、味(wei)、形(xing)及(ji)營養價值。另外(wai)，有(you)許(xu)多食(shi)(shi)(shi)品(pin)(pin)(pin)不適(shi)宜采用(yong)真(zhen)空(kong)(kong)包(bao)裝而必須采用(yong)真(zhen)空(kong)(kong)包(bao)裝機真(zhen)空(kong)(kong)充(chong)(chong)(chong)氣(qi)包(bao)裝。如松脆易碎食(shi)(shi)(shi)品(pin)(pin)(pin)，易結塊(kuai)食(shi)(shi)(shi)品(pin)(pin)(pin)，易變(bian)形(xing)走油(you)食(shi)(shi)(shi)品(pin)(pin)(pin)，有(you)尖銳(rui)棱角或硬度較高會刺破包(bao)裝袋(dai)(dai)(dai)的(de)(de)食(shi)(shi)(shi)品(pin)(pin)(pin)等。食(shi)(shi)(shi)品(pin)(pin)(pin)經真(zhen)空(kong)(kong)充(chong)(chong)(chong)氣(qi)包(bao)裝后(hou)，包(bao)裝袋(dai)(dai)(dai)內(nei)充(chong)(chong)(chong)氣(qi)壓強(qiang)大(da)于包(bao)裝袋(dai)(dai)(dai)外(wai)大(da)氣(qi)壓強(qiang)，能有(you)效(xiao)(xiao)地(di)防止(zhi)食(shi)(shi)(shi)品(pin)(pin)(pin)受壓破碎變(bian)形(xing)并不影(ying)響(xiang)包(bao)裝袋(dai)(dai)(dai)外(wai)觀及(ji)印刷裝潢。