技術文章ARTICLE
在(zai)發(fa)展(zhan)(zhan)中(zhong)求(qiu)生(sheng)存,不斷完善,以良(liang)好信譽和科學的管理促進企業(ye)迅速發(fa)展(zhan)(zhan)雙層(ceng)片(pian)壓(ya)片(pian)機壓(ya)制及雙層(ceng)片(pian)壓(ya)片(pian)機選購
雙層(ceng)(ceng)(ceng)片是指將(jiang)含有不同(tong)藥物或釋放(fang)性能不同(tong)的(de)顆粒依次分(fen)層(ceng)(ceng)(ceng)壓成(cheng)多層(ceng)(ceng)(ceng)片(multiplayer tablets),這類片劑(ji)的(de)優點:①兩種(zhong)有配(pei)伍禁忌(ji)的(de)藥物可分(fen)別制(zhi)(zhi)成(cheng)顆粒壓制(zhi)(zhi)兩層(ceng)(ceng)(ceng)片,必要時兩層(ceng)(ceng)(ceng)之(zhi)間增(zeng)加惰性物質(zhi)層(ceng)(ceng)(ceng),以利于(yu)將(jiang)兩層(ceng)(ceng)(ceng)隔(ge)離開;②可將(jiang)一種(zhong)藥物分(fen)別制(zhi)(zhi)成(cheng)速(su)釋層(ceng)(ceng)(ceng)和緩釋層(ceng)(ceng)(ceng),制(zhi)(zhi)成(cheng)較好的(de)緩、控釋制(zhi)(zhi)劑(ji);③多層(ceng)(ceng)(ceng)片的(de)各層(ceng)(ceng)(ceng)色澤可以不同(tong),制(zhi)(zhi)成(cheng)之(zhi)片美觀。
多層(ceng)片的處方及制(zhi)粒工藝等與普通片相同,壓(ya)(ya)(ya)片時需用的壓(ya)(ya)(ya)片機,一般(ban)是(shi)每次飼(si)(si)粉后(hou)均經壓(ya)(ya)(ya)縮(suo),再飼(si)(si)粉并再壓(ya)(ya)(ya)縮(suo),這樣各(ge)層(ceng)的界限清晰美觀。但初幾次飼(si)(si)粉壓(ya)(ya)(ya)縮(suo)時,壓(ya)(ya)(ya)力(li)不應太(tai)大,否則第二次飼(si)(si)料(liao)后(hou)再壓(ya)(ya)(ya)縮(suo)時,因*層(ceng)“片”的表面過分光潔,兩層(ceng)結合(he)不牢固。