真(zhen)(zhen)空(kong)充(chong)(chong)(chong)氣包(bao)(bao)(bao)裝(zhuang)的主(zhu)要作用(yong)除(chu)真(zhen)(zhen)空(kong)包(bao)(bao)(bao)裝(zhuang)所具備的除(chu)氧保質功(gong)能(neng)外(wai)，主(zhu)要還有(you)(you)(you)抗(kang)壓(ya)、阻(zu)氣、保鮮等(deng)作用(yong)，能(neng)更有(you)(you)(you)效地使食(shi)(shi)品(pin)(pin)長期保持原有(you)(you)(you)的色(se)、香(xiang)、味(wei)、形及營養(yang)價(jia)值(zhi)。另外(wai)，有(you)(you)(you)許多食(shi)(shi)品(pin)(pin)不適(shi)宜采(cai)用(yong)真(zhen)(zhen)空(kong)包(bao)(bao)(bao)裝(zhuang)而(er)必須采(cai)用(yong)真(zhen)(zhen)空(kong)包(bao)(bao)(bao)裝(zhuang)機真(zhen)(zhen)空(kong)充(chong)(chong)(chong)氣包(bao)(bao)(bao)裝(zhuang)。如松脆易碎食(shi)(shi)品(pin)(pin)，易結塊食(shi)(shi)品(pin)(pin)，易變形走油食(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)(bao)裝(zhuang)袋(dai)的食(shi)(shi)品(pin)(pin)等(deng)。食(shi)(shi)品(pin)(pin)經真(zhen)(zhen)空(kong)充(chong)(chong)(chong)氣包(bao)(bao)(bao)裝(zhuang)后(hou)，包(bao)(bao)(bao)裝(zhuang)袋(dai)內充(chong)(chong)(chong)氣壓(ya)強大于(yu)包(bao)(bao)(bao)裝(zhuang)袋(dai)外(wai)大氣壓(ya)強，能(neng)有(you)(you)(you)效地防(fang)止(zhi)食(shi)(shi)品(pin)(pin)受壓(ya)破碎變形并不影響包(bao)(bao)(bao)裝(zhuang)袋(dai)外(wai)觀(guan)及印(yin)刷裝(zhuang)潢。