真空充(chong)氣(qi)(qi)包(bao)(bao)(bao)裝的主要作(zuo)用除(chu)真空包(bao)(bao)(bao)裝所具備的除(chu)氧保質功能外,主要 還有(you)抗壓(ya)(ya)、阻氣(qi)(qi)、保鮮等作(zuo)用,能更有(you)效(xiao)地(di) 使食(shi)(shi)(shi)品(pin)長期保持原有(you)的色、香、味、形(xing)(xing)及(ji)營養價值。另(ling)外,有(you)許多食(shi)(shi)(shi)品(pin)不適(shi)宜采用真空包(bao)(bao)(bao)裝而必須采用真空充(chong)氣(qi)(qi)包(bao)(bao)(bao)裝。如松(song)脆易(yi)碎食(shi)(shi)(shi)品(pin),易(yi)結塊食(shi)(shi)(shi)品(pin),易(yi)變形(xing)(xing)走油食(shi)(shi)(shi)品(pin),有(you)尖銳棱角或硬度較高會刺(ci)破包(bao)(bao)(bao)裝袋的食(shi)(shi)(shi)品(pin)等。食(shi)(shi)(shi)品(pin)經真空充(chong)氣(qi)(qi)包(bao)(bao)(bao)裝后,包(bao)(bao)(bao)裝袋內(nei)充(chong)氣(qi)(qi)壓(ya)(ya)強大于包(bao)(bao)(bao)裝袋外大氣(qi)(qi)壓(ya)(ya)強,能有(you)效(xiao)地(di)防(fang)止食(shi)(shi)(shi)品(pin)受壓(ya)(ya)破碎變形(xing)(xing)并不影(ying)響包(bao)(bao)(bao)裝袋外觀(guan)及(ji) 印刷裝潢(huang)。
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