冷凍(dong)真(zhen)空干(gan)燥(zao)機簡稱凍(dong)干(gan)機起源于(yu)19世(shi)紀20年代，目前(qian)應用于(yu)生(sheng)物醫藥、檢測制(zhi)劑、食品、血液(ye)制(zhi)品、活性(xing)物和(he)工(gong)業等領域。基本原(yuan)理是基于(yu)水(shui)的三態(tai)變化。水(shui)有(you)固態(tai)、液(ye)態(tai)和(he)氣態(tai)，三種狀(zhuang)態(tai)在不同環境下可以相互轉換(huan)。四環凍(dong)干(gan)機利(li)用升華原(yuan)理，使預先凍(dong)結的物料中的水(shui)分，在真(zhen)空環境下直接以冰態(tai)升華為水(shui)蒸汽被除去，達(da)到冷凍(dong)干(gan)燥(zao)的目的。

凍(dong)(dong)干(gan)(gan)機在化(hua)妝(zhuang)(zhuang)(zhuang)品(pin)凍(dong)(dong)干(gan)(gan)機工作原(yuan)理解決化(hua)妝(zhuang)(zhuang)(zhuang)品(pin)生(sheng)(sheng)物(wu)活性(xing)(xing)不變、外(wai)觀色澤均(jun)勻(yun)、形(xing)態飽(bao)滿、結構牢(lao)固、溶解速(su)度(du)快，殘余(yu)水分(fen)低。需(xu)要獲(huo)得高質(zhi)量的(de)(de)凍(dong)(dong)干(gan)(gan)制(zhi)品(pin)和技術(shu)，凍(dong)(dong)干(gan)(gan)的(de)(de)理論和工藝(yi)應(ying)用在上(shang)海田楓網有(you)一個比較(jiao)全(quan)面的(de)(de)介紹。凍(dong)(dong)干(gan)(gan)工藝(yi)包括預凍(dong)(dong)、升(sheng)華和再凍(dong)(dong)干(gan)(gan)三個分(fen)階(jie)段。提(ti)高功能性(xing)(xing)原(yuan)料活性(xing)(xing)成分(fen)的(de)(de)穩(wen)定性(xing)(xing)及(ji)其(qi)生(sheng)(sheng)物(wu)利用度(du)，發揮(hui)其(qi)生(sheng)(sheng)物(wu)活性(xing)(xing)，提(ti)升(sheng)效(xiao)(xiao)果(guo)。把握(wo)合(he)理而有(you)效(xiao)(xiao)地縮短凍(dong)(dong)干(gan)(gan)的(de)(de)周期在化(hua)妝(zhuang)(zhuang)(zhuang)品(pin)生(sheng)(sheng)產上(shang)具(ju)有(you)明顯(xian)的(de)(de)經濟價值。

化(hua)(hua)妝品(pin)(pin)凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)機由(you)制(zhi)冷系(xi)(xi)統、真空系(xi)(xi)統、循(xun)環加(jia)系(xi)(xi)統、電控控制(zhi)系(xi)(xi)統所組(zu)成。有物料倉(cang)、捕水(shui)倉(cang)、機組(zu)和電控箱等部件。它(ta)的工作(zuo)原理是將(jiang)被干(gan)(gan)(gan)(gan)燥(zao)的化(hua)(hua)妝品(pin)(pin)活(huo)性物質(zhi)先凍(dong)(dong)(dong)(dong)(dong)結到三相點溫(wen)度(du)以下，在真空條件下使(shi)物品(pin)(pin)中的固態水(shui)份(fen)（冰）直(zhi)接升華成水(shui)蒸氣，從物品(pin)(pin)中排除(chu)得(de)到干(gan)(gan)(gan)(gan)燥(zao)成品(pin)(pin)。化(hua)(hua)妝品(pin)(pin)物料經前處理后(hou)，進入凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)機倉(cang)預凍(dong)(dong)(dong)(dong)(dong)，預凍(dong)(dong)(dong)(dong)(dong)結束(shu)后(hou)通過隔板(ban)曲線(xian)控溫(wen)干(gan)(gan)(gan)(gan)燥(zao)倉(cang)升華脫水(shui)，干(gan)(gan)(gan)(gan)燥(zao)結束(shu)后(hou)送(song)人(ren)包裝車間進行包裝出品(pin)(pin)。化(hua)(hua)妝品(pin)(pin)凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)制(zhi)劑市場，生產廠家有凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)機的企業已超過1000家，北京四環凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)機應用于凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)粉、凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)片、凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)球、凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)絮、凍(dong)(dong)(dong)(dong)(dong)干(gan)(gan)(gan)(gan)面膜(mo)等干(gan)(gan)(gan)(gan)燥(zao)。