What are the methods of tablet coating?
What are the methods of tablet coating?
There are three main processes for tablet coating: sugar coating, film coating, and enteric coating. Various classes of pharmaceutical coating materials used in tablet coating depending on the phase of coating are reached.
What is use of tablet coating?
Appearance: to change the color for branding purposes or other aesthetic reasons. Stability: to protect the active ingredient from moisture, light, and/or acidic environment of the stomach. Taste and/or odor masking: to provide an easy to swallow tablet without the bitter taste of many active ingredients.
What is the oldest method for tablet coating?
The process of sugar coating, which has its origins in the confectionery industry is perhaps one of the oldest pharmaceutical processes still in existence. The process involves the deposition of aqueous sugar solutions onto the surface of the core tablet.
Which instrument is used for tablet coating?
Perforated Pan Accela-cota/Hi-coater Systems – with this equipment, the drying air is directed to the drum, passing through the tablet bed and is released through the perforations in the drum.
Why is coating important?
They prevent corrosion. Rust or other corrosive debris is another issue that often pops up in industrial applications. Often the materials that are hard enough to actually build machinery from are also very likely to corrode over time.
What is the importance of coating?
What are the characteristics of coating?
properties of a coating, such as increased chemical resistance, increased abrasion, and impact resistance. The body coat or intermediate coat must also provide strong adhesion to the primer, as well as a good base for the topcoats.
What is coating and types of coating?
Coatings are specified as organic or inorganic according to the nature of their binder. Organic coatings are those that have an organic binder. Inorganic coatings are those that have an inorganic binder such as a silicate.
What are the types of coating?
Coatings are varied, but primarily fall into three categories: Architectural, Industrial, and Special Purpose.
What are the different methods of tablet coating?
Understanding Tablet Coating Process 1 Coating methods. There are two principal methods of coating tablet: sugar coating and film coating. 2 Comparison between film coating and sugar coating. Retain contour of original core. 3 Film Formers. 4 Enteric Coating.
How are the uncoated tablets coated?
The uncoated tablets have been coated by using the specific aqueous film coating formulation under the specified coating variables during the coating process to observe the affect of the formulation on the tablet properties.
How to evaluate the quality of coated tablet?
Coated Tablet Evaluation: – Evaluation of the quality of coating on tablet involves studying not only the film but also the film-tablet interactions. A number of test methods can be employed. 1. Adhesion test with tensile strength testers have been used to measure the force required to peel the film from the tablet surface.
What are the advantages of tablet coating?
The advantages of tablet coating are taste masking, odor masking, physical and chemical protection, protection of the drug from the gastric environment etc. The important reason to coat a pharmaceutical dosage form is to control the release profile and bioavailability of the active ingredient.