真(zhen)空(kong)(kong)充(chong)氣包(bao)裝(zhuang)(zhuang)的主要作用(yong)(yong)除(chu)真(zhen)空(kong)(kong)包(bao)裝(zhuang)(zhuang)所具備的除(chu)氧保質功能(neng)(neng)外，主要 還有(you)抗(kang)壓、阻氣、保鮮等作用(yong)(yong)，能(neng)(neng)更有(you)效(xiao)地(di) 使食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)長期(qi)保持原有(you)的色、香、味、形及(ji)營養價值。另外，有(you)許多食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)不(bu)適宜采(cai)用(yong)(yong)真(zhen)空(kong)(kong)包(bao)裝(zhuang)(zhuang)而必(bi)須采(cai)用(yong)(yong)真(zhen)空(kong)(kong)充(chong)氣包(bao)裝(zhuang)(zhuang)。如松脆易(yi)碎食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)，易(yi)結塊食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)，易(yi)變(bian)(bian)形走油(you)食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)，有(you)尖銳棱角或硬(ying)度較高會(hui)刺破包(bao)裝(zhuang)(zhuang)袋的食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)等。食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)經(jing)真(zhen)空(kong)(kong)充(chong)氣包(bao)裝(zhuang)(zhuang)后，包(bao)裝(zhuang)(zhuang)袋內充(chong)氣壓強大(da)于包(bao)裝(zhuang)(zhuang)袋外大(da)氣壓強，能(neng)(neng)有(you)效(xiao)地(di)防止食(shi)(shi)(shi)(shi)(shi)品(pin)(pin)受壓破碎變(bian)(bian)形并不(bu)影響包(bao)裝(zhuang)(zhuang)袋外觀(guan)及(ji) 印刷裝(zhuang)(zhuang)潢(huang)。