真(zhen)(zhen)空(kong)(kong)充(chong)(chong)氣(qi)(qi)包(bao)(bao)(bao)裝的(de)(de)主要作(zuo)用(yong)除(chu)真(zhen)(zhen)空(kong)(kong)包(bao)(bao)(bao)裝所具備的(de)(de)除(chu)氧保(bao)質功能(neng)外，主要 還(huan)有抗壓(ya)、阻氣(qi)(qi)、保(bao)鮮等作(zuo)用(yong)，能(neng)更有效(xiao)地 使食(shi)(shi)(shi)品(pin)長(chang)期保(bao)持原有的(de)(de)色、香、味、形及營養價值。另外，有許多食(shi)(shi)(shi)品(pin)不適(shi)宜采用(yong)真(zhen)(zhen)空(kong)(kong)包(bao)(bao)(bao)裝而必須采用(yong)真(zhen)(zhen)空(kong)(kong)充(chong)(chong)氣(qi)(qi)包(bao)(bao)(bao)裝。如松脆易(yi)碎(sui)(sui)食(shi)(shi)(shi)品(pin)，易(yi)結塊食(shi)(shi)(shi)品(pin)，易(yi)變形走(zou)油食(shi)(shi)(shi)品(pin)，有尖銳(rui)棱(leng)角或硬度較高(gao)會(hui)刺破(po)包(bao)(bao)(bao)裝袋的(de)(de)食(shi)(shi)(shi)品(pin)等。食(shi)(shi)(shi)品(pin)經(jing)真(zhen)(zhen)空(kong)(kong)充(chong)(chong)氣(qi)(qi)包(bao)(bao)(bao)裝后，包(bao)(bao)(bao)裝袋內充(chong)(chong)氣(qi)(qi)壓(ya)強大(da)于(yu)包(bao)(bao)(bao)裝袋外大(da)氣(qi)(qi)壓(ya)強，能(neng)有效(xiao)地防止食(shi)(shi)(shi)品(pin)受(shou)壓(ya)破(po)碎(sui)(sui)變形并(bing)不影(ying)響包(bao)(bao)(bao)裝袋外觀及 印(yin)刷裝潢。