真(zhen)(zhen)空(kong)充氣(qi)(qi)包(bao)裝(zhuang)的主要作用(yong)(yong)除真(zhen)(zhen)空(kong)包(bao)裝(zhuang)所具備(bei)的除氧保質功能(neng)外(wai),主要還有(you)(you)抗壓、阻氣(qi)(qi)、保鮮等作用(yong)(yong),能(neng)更(geng)有(you)(you)效地使(shi)食(shi)(shi)品長期保持原有(you)(you)的色、香、味(wei)、形(xing)及(ji)(ji)營養價值。另外(wai),有(you)(you)許多食(shi)(shi)品不適(shi)宜采(cai)用(yong)(yong)真(zhen)(zhen)空(kong)包(bao)裝(zhuang)而必須采(cai)用(yong)(yong)真(zhen)(zhen)空(kong)包(bao)裝(zhuang)機真(zhen)(zhen)空(kong)充氣(qi)(qi)包(bao)裝(zhuang)。如(ru)松脆易碎(sui)食(shi)(shi)品,易結(jie)塊(kuai)食(shi)(shi)品,易變形(xing)走(zou)油食(shi)(shi)品,有(you)(you)尖銳(rui)棱角或硬度較高(gao)會刺破包(bao)裝(zhuang)袋(dai)的食(shi)(shi)品等。食(shi)(shi)品經(jing)真(zhen)(zhen)空(kong)充氣(qi)(qi)包(bao)裝(zhuang)后,包(bao)裝(zhuang)袋(dai)內充氣(qi)(qi)壓強(qiang)大于包(bao)裝(zhuang)袋(dai)外(wai)大氣(qi)(qi)壓強(qiang),能(neng)有(you)(you)效地防止(zhi)食(shi)(shi)品受壓破碎(sui)變形(xing)并不影響包(bao)裝(zhuang)袋(dai)外(wai)觀及(ji)(ji)印刷裝(zhuang)潢。
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