真(zhen)(zhen)空(kong)充氣(qi)包(bao)(bao)裝(zhuang)的主要作(zuo)用(yong)(yong)除(chu)真(zhen)(zhen)空(kong)包(bao)(bao)裝(zhuang)所具備的除(chu)氧保(bao)(bao)質功能(neng)外，主要 還有(you)抗(kang)壓、阻氣(qi)、保(bao)(bao)鮮等作(zuo)用(yong)(yong)，能(neng)更(geng)有(you)效地(di) 使食(shi)(shi)(shi)品(pin)長期保(bao)(bao)持(chi)原有(you)的色(se)、香(xiang)、味、形及營養價值。另外，有(you)許(xu)多(duo)食(shi)(shi)(shi)品(pin)不(bu)適宜采用(yong)(yong)真(zhen)(zhen)空(kong)包(bao)(bao)裝(zhuang)而必(bi)須采用(yong)(yong)真(zhen)(zhen)空(kong)充氣(qi)包(bao)(bao)裝(zhuang)。如松(song)脆易(yi)碎(sui)食(shi)(shi)(shi)品(pin)，易(yi)結塊(kuai)食(shi)(shi)(shi)品(pin)，易(yi)變形走(zou)油食(shi)(shi)(shi)品(pin)，有(you)尖(jian)銳棱角或(huo)硬(ying)度較高會刺(ci)破(po)包(bao)(bao)裝(zhuang)袋的食(shi)(shi)(shi)品(pin)等。食(shi)(shi)(shi)品(pin)經(jing)真(zhen)(zhen)空(kong)充氣(qi)包(bao)(bao)裝(zhuang)后，包(bao)(bao)裝(zhuang)袋內充氣(qi)壓強大(da)于包(bao)(bao)裝(zhuang)袋外大(da)氣(qi)壓強，能(neng)有(you)效地(di)防止食(shi)(shi)(shi)品(pin)受壓破(po)碎(sui)變形并不(bu)影(ying)響包(bao)(bao)裝(zhuang)袋外觀及 印刷裝(zhuang)潢(huang)。