真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)充(chong)(chong)(chong)氣包(bao)裝(zhuang)(zhuang)的(de)主要(yao)作(zuo)用除真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)包(bao)裝(zhuang)(zhuang)所具備的(de)除氧(yang)保(bao)質功能(neng)外(wai)，主要(yao)還有(you)(you)抗壓、阻氣、保(bao)鮮(xian)等作(zuo)用，能(neng)更有(you)(you)效地(di)使食(shi)(shi)(shi)品(pin)長期保(bao)持原有(you)(you)的(de)色、香(xiang)、味、形及營養(yang)價值(zhi)。另外(wai)，有(you)(you)許(xu)多(duo)食(shi)(shi)(shi)品(pin)不適宜采用真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)包(bao)裝(zhuang)(zhuang)而(er)必(bi)須(xu)采用真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)包(bao)裝(zhuang)(zhuang)機真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)充(chong)(chong)(chong)氣包(bao)裝(zhuang)(zhuang)。如松(song)脆易(yi)碎食(shi)(shi)(shi)品(pin)，易(yi)結(jie)塊食(shi)(shi)(shi)品(pin)，易(yi)變形走油食(shi)(shi)(shi)品(pin)，有(you)(you)尖銳棱角或硬度較高會刺破包(bao)裝(zhuang)(zhuang)袋的(de)食(shi)(shi)(shi)品(pin)等。食(shi)(shi)(shi)品(pin)經真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)充(chong)(chong)(chong)氣包(bao)裝(zhuang)(zhuang)后，包(bao)裝(zhuang)(zhuang)袋內充(chong)(chong)(chong)氣壓強(qiang)(qiang)大于(yu)包(bao)裝(zhuang)(zhuang)袋外(wai)大氣壓強(qiang)(qiang)，能(neng)有(you)(you)效地(di)防止(zhi)食(shi)(shi)(shi)品(pin)受(shou)壓破碎變形并(bing)不影響包(bao)裝(zhuang)(zhuang)袋外(wai)觀及印刷(shua)裝(zhuang)(zhuang)潢。