真(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)包(bao)(bao)裝(zhuang)(zhuang)的(de)主要(yao)作用除真(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)包(bao)(bao)裝(zhuang)(zhuang)所(suo)具備(bei)的(de)除氧保質功能外(wai)(wai)，主要(yao) 還有(you)(you)(you)抗壓、阻氣(qi)、保鮮(xian)等(deng)作用，能更有(you)(you)(you)效地 使食(shi)(shi)品(pin)長期保持原有(you)(you)(you)的(de)色、香、味、形(xing)及(ji)營(ying)養價值。另外(wai)(wai)，有(you)(you)(you)許多(duo)食(shi)(shi)品(pin)不適(shi)宜采用真(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)包(bao)(bao)裝(zhuang)(zhuang)而(er)必須采用真(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)包(bao)(bao)裝(zhuang)(zhuang)。如松(song)脆易(yi)碎(sui)食(shi)(shi)品(pin)，易(yi)結塊食(shi)(shi)品(pin)，易(yi)變形(xing)走油(you)食(shi)(shi)品(pin)，有(you)(you)(you)尖銳棱角或硬度較(jiao)高會刺破包(bao)(bao)裝(zhuang)(zhuang)袋的(de)食(shi)(shi)品(pin)等(deng)。食(shi)(shi)品(pin)經真(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)包(bao)(bao)裝(zhuang)(zhuang)后，包(bao)(bao)裝(zhuang)(zhuang)袋內充(chong)氣(qi)壓強大于包(bao)(bao)裝(zhuang)(zhuang)袋外(wai)(wai)大氣(qi)壓強，能有(you)(you)(you)效地防止食(shi)(shi)品(pin)受壓破碎(sui)變形(xing)并不影響包(bao)(bao)裝(zhuang)(zhuang)袋外(wai)(wai)觀及(ji) 印刷裝(zhuang)(zhuang)潢。