Two, granulation of most tablets need to be made into particles in order to be pressed, which is determined by the physical properties of raw materials. Different raw materials have different granulation methods, mainly divided into the whole powder granulation method, fine powder and thick extract mixed granulation method, the whole extract granulation method and purified material granulation method. Among them, the whole extract granulation method is more commonly used. Made of granules is mainly to increase its fluidity and compressibility. Increase the fluidity of the material, reduce the fine powder adsorption and the storage of air to reduce the loosening of tablets, avoid powder stratification and fine powder flying.
Three, the output of single punch tablet press is generally 50 tablets/min, generally used for the trial production of new products or small amount of production; tablet pressing is pressurized from one side (pressurized by the upper punch), so the pressure distribution is not uniform, easy to loosen the tablets, and the noise is bigger. Rotary tablet press, with higher production capacity, is a widely used tablet press in the current production.