真空充(chong)氣(qi)包(bao)裝的(de)(de)主(zhu)要作(zuo)(zuo)用(yong)(yong)除真空包(bao)裝所具(ju)備的(de)(de)除氧保(bao)質(zhi)功能外(wai)(wai),主(zhu)要 還有(you)(you)(you)抗壓、阻(zu)氣(qi)、保(bao)鮮等(deng)作(zuo)(zuo)用(yong)(yong),能更有(you)(you)(you)效(xiao)地 使(shi)食(shi)(shi)品(pin)長(chang)期保(bao)持原有(you)(you)(you)的(de)(de)色、香、味、形(xing)及(ji)營養(yang)價值。另外(wai)(wai),有(you)(you)(you)許(xu)多(duo)食(shi)(shi)品(pin)不適宜采用(yong)(yong)真空包(bao)裝而(er)必(bi)須(xu)采用(yong)(yong)真空充(chong)氣(qi)包(bao)裝。如松脆易(yi)碎食(shi)(shi)品(pin),易(yi)結塊食(shi)(shi)品(pin),易(yi)變形(xing)走油食(shi)(shi)品(pin),有(you)(you)(you)尖銳棱角或(huo)硬度較高(gao)會刺破包(bao)裝袋的(de)(de)食(shi)(shi)品(pin)等(deng)。食(shi)(shi)品(pin)經真空充(chong)氣(qi)包(bao)裝后,包(bao)裝袋內充(chong)氣(qi)壓強大于包(bao)裝袋外(wai)(wai)大氣(qi)壓強,能有(you)(you)(you)效(xiao)地防止食(shi)(shi)品(pin)受壓破碎變形(xing)并不影響包(bao)裝袋外(wai)(wai)觀及(ji) 印(yin)刷裝潢(huang)。
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