tablet coating pan

Before the tablet sur face dri es the applied co ating changes from a sticky liquid to tacky. Tablet coating is the key step involved in the manufacturing of tablets having controlled release delayed release profiles. The tablet coating have number of advantages like masking odor taste color of the drug providing physical and chemical protection to drug protecting drug from the gastric environment.
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3 primary components of tablet coating are tablet properties coating process and. Coating tablets with a thin polymer film can be an effective way to give your products a professional edge. With a tacky polymeric film.

High quality tablets can be quickly and easily produced using a tablet coating machine and the correct excipients unfortunately several defects can arise with coatings.

Tablet coating pan. Capacity of tablet coating machine is calculated by brim volume of the coating pan and the bulk density of the tablets. Tablets in a coating pan th e tablet surfaces become covered. Coatings may be applied to various oral dosage forms such as particles powders granules crystals pellets and tablets. Tablet properties tablet to be coated must posses the proper physical characteristics like spherical shape and uniform surface.

To tolerate attrition of tablets during coating process they must be resistant to abrasion and chipping. Ankur choudhary print question forum 9 comments the quantity of tablets used for coating in coating pan plays a great role in getting good coating results. Tablets that are compressed are often coated with layer of sugar that may be coloured or uncoloured depending on the purpose of the tablet. Tablet coating is a process by which an essentially dry outer layer of coating material is applied to the surface of a dosage form in order to confer specific benefits over uncoated variety.

Tablet film coating is a technology driven process and the evolution of coated dosage forms relies on advancements in coating technology equipment analytical techniques and coating materials. Problems and remedies for tablet coating problem definition causes remedy pitting it is defect whereby pits occur in the surface of a tablet core without any visible disruption of the film coating inappropriate drying inlet air temperature increase the drying inlet air temperature blooming it is defect where coating becomes dull immediately or after prolonged storage at high temperatures. The sugar coating is generally water soluble making it easier to dissolve quickly when it comes into contact with any liquid medium such as gastrointestinal fluids. Inadequate mixing of tablets during coating increase pan speed and or improve baffle system poor opacity or hiding power of coating reformulate coatings to improve opacity or use an opacified white pre coat for coloured tablet cores.

As the tablet surfaces that are brittle and soften in presence of heat or effected by coating composition and tend to become rough in the early stages of coating.