真(zhen)空充(chong)氣包(bao)(bao)(bao)裝(zhuang)的主要作用(yong)(yong)除(chu)真(zhen)空包(bao)(bao)(bao)裝(zhuang)所具備的除(chu)氧(yang)保(bao)質功(gong)能(neng)(neng)外，主要 還有抗(kang)壓、阻氣、保(bao)鮮等作用(yong)(yong)，能(neng)(neng)更有效(xiao)(xiao)地 使食(shi)(shi)品(pin)(pin)長期保(bao)持原有的色、香、味(wei)、形(xing)及營養價值。另(ling)外，有許(xu)多食(shi)(shi)品(pin)(pin)不適(shi)宜采(cai)用(yong)(yong)真(zhen)空包(bao)(bao)(bao)裝(zhuang)而(er)必(bi)須采(cai)用(yong)(yong)真(zhen)空充(chong)氣包(bao)(bao)(bao)裝(zhuang)。如松(song)脆(cui)易碎食(shi)(shi)品(pin)(pin)，易結塊(kuai)食(shi)(shi)品(pin)(pin)，易變形(xing)走油(you)食(shi)(shi)品(pin)(pin)，有尖銳棱(leng)角或硬度較(jiao)高會刺破包(bao)(bao)(bao)裝(zhuang)袋(dai)的食(shi)(shi)品(pin)(pin)等。食(shi)(shi)品(pin)(pin)經(jing)真(zhen)空充(chong)氣包(bao)(bao)(bao)裝(zhuang)后，包(bao)(bao)(bao)裝(zhuang)袋(dai)內充(chong)氣壓強(qiang)大于(yu)包(bao)(bao)(bao)裝(zhuang)袋(dai)外大氣壓強(qiang)，能(neng)(neng)有效(xiao)(xiao)地防止食(shi)(shi)品(pin)(pin)受壓破碎變形(xing)并不影(ying)響(xiang)包(bao)(bao)(bao)裝(zhuang)袋(dai)外觀及 印刷(shua)裝(zhuang)潢。