真(zhen)(zhen)(zhen)空(kong)充氣(qi)包(bao)(bao)裝的(de)(de)主(zhu)要(yao)作用(yong)除真(zhen)(zhen)(zhen)空(kong)包(bao)(bao)裝所具備的(de)(de)除氧保(bao)質功(gong)能外(wai)，主(zhu)要(yao)還(huan)有(you)(you)(you)抗壓、阻氣(qi)、保(bao)鮮等作用(yong)，能更有(you)(you)(you)效(xiao)地(di)使(shi)食(shi)(shi)(shi)品(pin)(pin)長期保(bao)持原有(you)(you)(you)的(de)(de)色、香、味、形及營養(yang)價值。另(ling)外(wai)，有(you)(you)(you)許多食(shi)(shi)(shi)品(pin)(pin)不適宜采用(yong)真(zhen)(zhen)(zhen)空(kong)包(bao)(bao)裝而(er)必須(xu)采用(yong)真(zhen)(zhen)(zhen)空(kong)包(bao)(bao)裝機真(zhen)(zhen)(zhen)空(kong)充氣(qi)包(bao)(bao)裝。如松脆易(yi)碎食(shi)(shi)(shi)品(pin)(pin)，易(yi)結塊食(shi)(shi)(shi)品(pin)(pin)，易(yi)變形走油食(shi)(shi)(shi)品(pin)(pin)，有(you)(you)(you)尖(jian)銳棱角(jiao)或硬度較高會刺破包(bao)(bao)裝袋的(de)(de)食(shi)(shi)(shi)品(pin)(pin)等。食(shi)(shi)(shi)品(pin)(pin)經真(zhen)(zhen)(zhen)空(kong)充氣(qi)包(bao)(bao)裝后，包(bao)(bao)裝袋內充氣(qi)壓強大于包(bao)(bao)裝袋外(wai)大氣(qi)壓強，能有(you)(you)(you)效(xiao)地(di)防止食(shi)(shi)(shi)品(pin)(pin)受壓破碎變形并不影(ying)響(xiang)包(bao)(bao)裝袋外(wai)觀(guan)及印(yin)刷裝潢。