File Name: wurster coating scale up and scale out .zip
The aim of this study is to determine favorable process conditions for the coating of placebo tablets. In order to determine favorable process conditions concentration, Wurster tube position, inlet air temperature, and atomization pressure , evaluation factors expressing process efficiency were calculated. Stereomicroscopy analysis provided good results with respect to the coating layer adherence and consistency. Results showed that the increased number of the coating cycles contributes to the desired featureless film morphology, when sufficiently high temperature and pressure are applied, thus resulting in high intra- and intertablet uniformity. Additionally, this paper analyzes the coating process from a mechanistic perspective of the underlying phenomena occurring on a tablet surface.
Dale Wurster at University of Wisconsin invented the wurster process way back in Wurster process gained momentum in Indian Pharma Industry in the recent years because of the opportunities in the generic business. Almost all major companies are venturing into particle coating in wurster. In addition, the process can be done with same ease for both aqueous and non-aqueous applications. The process parameters in the Fluid Beds are controllable precisely, which ensures easier optimization and reproducibility of the product quality. There are number of articles available about Wurster processing, optimization and scale up.
Shetty; Pharma Times; Visually achieve same fluidization level inside and outside the partition. Fluidization levels should primarily be adjusted by changing the plate pattern. Total airflow. Create an AI-powered research feed to stay up to date with new papers like this posted to ArXiv. Skip to search form Skip to main content You are currently offline.
Fluid bed operations such as drying, granulation or particle coating are often major process steps in the production of solid dosage forms. And, even though the technology has been in use by pharmaceutical companies, globally, for more than 50 years, it has still a lot of shortfalls. Each unit operation needs dedicated machinery or process containers to achieve optimal performance.
Suspension of microparticles in an easy-to-swallow liquid is one approach to develop sustained-release formulations for children and patients with swallowing difficulties. However, to date production of sustained-release microparticles at the industrial scale has proven to be challenging. The aim of this investigation was to develop an innovative concept in coating sustained-release microparticles using industrial scalable Wurster fluidised bed to produce oral liquid suspensions. A novel approach of periodic addition of a small quantity 0. Powder rheology tests showed that dry powder glidants increased the tapped density and decreased the cohesive index of coated microparticles. The robust, scalable technology presented in this study offers an important solution to the long-standing challenges of formulating sustained-release dosage forms suitable for children and older people with swallowing difficulties.
Thismakes it possible to have sufficientquantity of particles inside the partition toaccumulate the maximum coating solutiondroplets and to avoid premature drying, ordepositing on the walls of the partition. Air Distribution Plate: Suitable baseplate has to select to get consistentfluidization at minimum attrition. Thefluidization volume affects particlevelocity; the smaller particle requireslesser air volume to attain certain heightthan the bigger particles. The differentialpressure and air velocity at the airdistribution plate must be almost same. Therefore when we deal with the smallerparticle we have to use plate with lesseropening area to create the resistance at theAir Distribution Plate to have betterdistribution of the air [6, 1]. Fluidization Air Flow: The inlet airvolume is not to dry the product it has tobe used to achieve desired fluidizationpattern. The drying of the product can beachieved by adjusting the temperature.