微型胶囊(简称微囊),是近二十多年来发展起来的一种新剂型。系将固体、液体或气体药物(通称囊心物质),利用高分子物质或共聚物(通称包囊材料)包裹于药物的表面,使成密封的微小胶囊。外观呈粒状或园球形,直径以微米(μ)计,范围在1μ至5000μ,一般大小在5～400u之间。所以微型胶囊可看作是一种药物包裹在囊膜内极小的无缝胶囊剂。微型胶囊最初用于“无碳复写纸”的生产,到六十年代初期才开始用于药物包囊 Microcapsules (referred to as microcapsules), is developed over the past two decades a new dosage form. Department of solid, liquid or gas drugs (commonly known as the capsule core material), the use of polymer materials or copolymers (commonly known as encapsulation material) wrapped in the surface of the drug, into a sealed microcapsules. Appearance grainy or spherical, diameter in microns (μ) dollars, the range of 1μ to 5000μ, the general size of 5 ~ 400u between. Therefore, micro-capsules can be seen as a package of drugs in the capsule capsule minimal seamless. Microcapsules were originally used in the production of “carbon-free copy paper” until the early 1960s for drug encapsulation