真(zhen)空(kong)充(chong)(chong)(chong)(chong)氣(qi)包(bao)(bao)裝(zhuang)(zhuang)的主要作(zuo)用(yong)(yong)(yong)除真(zhen)空(kong)包(bao)(bao)裝(zhuang)(zhuang)所具備的除氧保質功能(neng)外(wai)(wai)，主要 還有(you)(you)(you)(you)(you)抗(kang)壓、阻氣(qi)、保鮮等(deng)作(zuo)用(yong)(yong)(yong)，能(neng)更(geng)有(you)(you)(you)(you)(you)效地 使食(shi)(shi)(shi)品(pin)長期(qi)保持原有(you)(you)(you)(you)(you)的色(se)、香、味(wei)、形(xing)及營養價(jia)值。另外(wai)(wai)，有(you)(you)(you)(you)(you)許多食(shi)(shi)(shi)品(pin)不適宜采用(yong)(yong)(yong)真(zhen)空(kong)包(bao)(bao)裝(zhuang)(zhuang)而必(bi)須(xu)采用(yong)(yong)(yong)真(zhen)空(kong)充(chong)(chong)(chong)(chong)氣(qi)包(bao)(bao)裝(zhuang)(zhuang)。如松脆易碎(sui)食(shi)(shi)(shi)品(pin)，易結(jie)塊食(shi)(shi)(shi)品(pin)，易變形(xing)走油食(shi)(shi)(shi)品(pin)，有(you)(you)(you)(you)(you)尖銳棱角(jiao)或硬度較高(gao)會刺破包(bao)(bao)裝(zhuang)(zhuang)袋(dai)的食(shi)(shi)(shi)品(pin)等(deng)。食(shi)(shi)(shi)品(pin)經(jing)真(zhen)空(kong)充(chong)(chong)(chong)(chong)氣(qi)包(bao)(bao)裝(zhuang)(zhuang)后，包(bao)(bao)裝(zhuang)(zhuang)袋(dai)內充(chong)(chong)(chong)(chong)氣(qi)壓強大(da)于包(bao)(bao)裝(zhuang)(zhuang)袋(dai)外(wai)(wai)大(da)氣(qi)壓強，能(neng)有(you)(you)(you)(you)(you)效地防(fang)止食(shi)(shi)(shi)品(pin)受壓破碎(sui)變形(xing)并不影響包(bao)(bao)裝(zhuang)(zhuang)袋(dai)外(wai)(wai)觀及 印刷裝(zhuang)(zhuang)潢。