真(zhen)空充(chong)(chong)氣包(bao)(bao)裝(zhuang)(zhuang)(zhuang)的主要(yao)(yao)作(zuo)用(yong)(yong)除(chu)真(zhen)空包(bao)(bao)裝(zhuang)(zhuang)(zhuang)所具備的除(chu)氧(yang)保(bao)(bao)質(zhi)功能外，主要(yao)(yao) 還(huan)有(you)抗壓、阻氣、保(bao)(bao)鮮等作(zuo)用(yong)(yong)，能更有(you)效地 使食(shi)(shi)(shi)品(pin)(pin)(pin)長期保(bao)(bao)持原有(you)的色、香(xiang)、味、形(xing)(xing)及營養價(jia)值。另(ling)外，有(you)許多食(shi)(shi)(shi)品(pin)(pin)(pin)不適宜采(cai)用(yong)(yong)真(zhen)空包(bao)(bao)裝(zhuang)(zhuang)(zhuang)而必(bi)須采(cai)用(yong)(yong)真(zhen)空充(chong)(chong)氣包(bao)(bao)裝(zhuang)(zhuang)(zhuang)。如松(song)脆易(yi)碎食(shi)(shi)(shi)品(pin)(pin)(pin)，易(yi)結塊食(shi)(shi)(shi)品(pin)(pin)(pin)，易(yi)變形(xing)(xing)走油食(shi)(shi)(shi)品(pin)(pin)(pin)，有(you)尖銳棱角或硬(ying)度較(jiao)高會刺(ci)破包(bao)(bao)裝(zhuang)(zhuang)(zhuang)袋的食(shi)(shi)(shi)品(pin)(pin)(pin)等。食(shi)(shi)(shi)品(pin)(pin)(pin)經真(zhen)空充(chong)(chong)氣包(bao)(bao)裝(zhuang)(zhuang)(zhuang)后，包(bao)(bao)裝(zhuang)(zhuang)(zhuang)袋內充(chong)(chong)氣壓強大(da)于包(bao)(bao)裝(zhuang)(zhuang)(zhuang)袋外大(da)氣壓強，能有(you)效地防止食(shi)(shi)(shi)品(pin)(pin)(pin)受(shou)壓破碎變形(xing)(xing)并不影響包(bao)(bao)裝(zhuang)(zhuang)(zhuang)袋外觀及 印刷裝(zhuang)(zhuang)(zhuang)潢。