真(zhen)(zhen)空(kong)充(chong)氣包裝(zhuang)的主(zhu)要(yao)作用(yong)(yong)除(chu)真(zhen)(zhen)空(kong)包裝(zhuang)所具備的除(chu)氧保質功(gong)能外(wai)(wai),主(zhu)要(yao) 還有(you)(you)抗壓、阻氣、保鮮等作用(yong)(yong),能更有(you)(you)效(xiao)地(di) 使食(shi)品(pin)(pin)長期(qi)保持原(yuan)有(you)(you)的色、香、味、形及(ji)營養價值(zhi)。另外(wai)(wai),有(you)(you)許多食(shi)品(pin)(pin)不(bu)適宜采用(yong)(yong)真(zhen)(zhen)空(kong)包裝(zhuang)而必(bi)須采用(yong)(yong)真(zhen)(zhen)空(kong)充(chong)氣包裝(zhuang)。如(ru)松(song)脆(cui)易碎食(shi)品(pin)(pin),易結塊食(shi)品(pin)(pin),易變形走油食(shi)品(pin)(pin),有(you)(you)尖(jian)銳棱(leng)角(jiao)或硬度較(jiao)高會刺破包裝(zhuang)袋的食(shi)品(pin)(pin)等。食(shi)品(pin)(pin)經真(zhen)(zhen)空(kong)充(chong)氣包裝(zhuang)后,包裝(zhuang)袋內充(chong)氣壓強大(da)于(yu)包裝(zhuang)袋外(wai)(wai)大(da)氣壓強,能有(you)(you)效(xiao)地(di)防止食(shi)品(pin)(pin)受壓破碎變形并不(bu)影響包裝(zhuang)袋外(wai)(wai)觀及(ji) 印刷裝(zhuang)潢。
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