真(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)(qi)包(bao)(bao)裝(zhuang)的主(zhu)要(yao)作用(yong)(yong)除真(zhen)(zhen)空(kong)(kong)包(bao)(bao)裝(zhuang)所具備的除氧保質功能(neng)(neng)外，主(zhu)要(yao) 還(huan)有抗(kang)壓(ya)、阻氣(qi)(qi)、保鮮等作用(yong)(yong)，能(neng)(neng)更有效地 使(shi)食(shi)品(pin)(pin)(pin)(pin)長期保持原(yuan)有的色、香、味(wei)、形(xing)及營(ying)養價值。另(ling)外，有許多食(shi)品(pin)(pin)(pin)(pin)不(bu)適宜采用(yong)(yong)真(zhen)(zhen)空(kong)(kong)包(bao)(bao)裝(zhuang)而必須采用(yong)(yong)真(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)(qi)包(bao)(bao)裝(zhuang)。如松脆(cui)易(yi)(yi)碎食(shi)品(pin)(pin)(pin)(pin)，易(yi)(yi)結塊食(shi)品(pin)(pin)(pin)(pin)，易(yi)(yi)變形(xing)走油(you)食(shi)品(pin)(pin)(pin)(pin)，有尖(jian)銳(rui)棱角或硬(ying)度較高會刺破(po)包(bao)(bao)裝(zhuang)袋的食(shi)品(pin)(pin)(pin)(pin)等。食(shi)品(pin)(pin)(pin)(pin)經真(zhen)(zhen)空(kong)(kong)充(chong)氣(qi)(qi)包(bao)(bao)裝(zhuang)后(hou)，包(bao)(bao)裝(zhuang)袋內充(chong)氣(qi)(qi)壓(ya)強大于包(bao)(bao)裝(zhuang)袋外大氣(qi)(qi)壓(ya)強，能(neng)(neng)有效地防止食(shi)品(pin)(pin)(pin)(pin)受壓(ya)破(po)碎變形(xing)并(bing)不(bu)影響(xiang)包(bao)(bao)裝(zhuang)袋外觀及 印(yin)刷裝(zhuang)潢。