真(zhen)空(kong)充氣(qi)包(bao)(bao)(bao)裝的主(zhu)要作用(yong)(yong)除(chu)真(zhen)空(kong)包(bao)(bao)(bao)裝所具備的除(chu)氧保(bao)質(zhi)功能外(wai)，主(zhu)要 還有抗壓、阻氣(qi)、保(bao)鮮(xian)等(deng)作用(yong)(yong)，能更有效地 使食(shi)(shi)(shi)品(pin)(pin)長(chang)期保(bao)持原有的色(se)、香、味、形(xing)及(ji)營(ying)養價值。另(ling)外(wai)，有許多食(shi)(shi)(shi)品(pin)(pin)不適宜采用(yong)(yong)真(zhen)空(kong)包(bao)(bao)(bao)裝而必須(xu)采用(yong)(yong)真(zhen)空(kong)充氣(qi)包(bao)(bao)(bao)裝。如松脆(cui)易碎食(shi)(shi)(shi)品(pin)(pin)，易結塊食(shi)(shi)(shi)品(pin)(pin)，易變形(xing)走油食(shi)(shi)(shi)品(pin)(pin)，有尖銳棱(leng)角或硬度較高會刺破包(bao)(bao)(bao)裝袋(dai)的食(shi)(shi)(shi)品(pin)(pin)等(deng)。食(shi)(shi)(shi)品(pin)(pin)經(jing)真(zhen)空(kong)充氣(qi)包(bao)(bao)(bao)裝后，包(bao)(bao)(bao)裝袋(dai)內充氣(qi)壓強大(da)于包(bao)(bao)(bao)裝袋(dai)外(wai)大(da)氣(qi)壓強，能有效地防止食(shi)(shi)(shi)品(pin)(pin)受壓破碎變形(xing)并(bing)不影響包(bao)(bao)(bao)裝袋(dai)外(wai)觀及(ji) 印刷裝潢。