真空(kong)充(chong)氣包(bao)裝(zhuang)(zhuang)的主(zhu)要(yao)(yao)作用(yong)除真空(kong)包(bao)裝(zhuang)(zhuang)所(suo)具備的除氧保質(zhi)功能(neng)外,主(zhu)要(yao)(yao) 還有(you)抗壓(ya)、阻氣、保鮮等作用(yong),能(neng)更有(you)效地 使(shi)食(shi)(shi)品(pin)(pin)長期保持原有(you)的色(se)、香、味、形(xing)(xing)及營(ying)養價值。另外,有(you)許多食(shi)(shi)品(pin)(pin)不適宜(yi)采(cai)用(yong)真空(kong)包(bao)裝(zhuang)(zhuang)而(er)必須(xu)采(cai)用(yong)真空(kong)充(chong)氣包(bao)裝(zhuang)(zhuang)。如松脆(cui)易碎食(shi)(shi)品(pin)(pin),易結塊食(shi)(shi)品(pin)(pin),易變(bian)形(xing)(xing)走油食(shi)(shi)品(pin)(pin),有(you)尖銳棱角或硬度較高會刺破(po)包(bao)裝(zhuang)(zhuang)袋(dai)的食(shi)(shi)品(pin)(pin)等。食(shi)(shi)品(pin)(pin)經真空(kong)充(chong)氣包(bao)裝(zhuang)(zhuang)后,包(bao)裝(zhuang)(zhuang)袋(dai)內充(chong)氣壓(ya)強大于(yu)包(bao)裝(zhuang)(zhuang)袋(dai)外大氣壓(ya)強,能(neng)有(you)效地防止食(shi)(shi)品(pin)(pin)受壓(ya)破(po)碎變(bian)形(xing)(xing)并不影響包(bao)裝(zhuang)(zhuang)袋(dai)外觀及 印(yin)刷裝(zhuang)(zhuang)潢。
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