Film-coating is a process in which a tablet, capsule, or pellet is covered by a thin layer of film to protect it or make it easier to swallow. Applying a thin coating to tablets is called film-coating. The outer layer applied in film-coating makes tablets easier to swallow.
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What are the benefits of film coating?
The purpose of film coating includes esthetic enhancement, increased shelf life, taste masking, moderating the release profile of active pharmaceutical ingredient (API), trade-marking, and protection of intellectual property. The thickness of the film is generally less than 100 μm.
What does a film coat contain?
The main components of film-coating formulations are a polymer, plasticizer, colorant, and solvent (or vehicle).
What is film coating and sugar coating?
It is a process by which an essentially dry, outer layer of coating material is applied to the surface of an appropriate substrate order to confer specific benefits over uncoated variety. Some of the original reasons for coating solid dosage forms, such as pills, granules, and tablets, were.
Which among the following is an example of film coating polymers?
Polyvinyl alcohol-polyethylene glycol copolymers. This is a synthetic polymer that is mainly used in immediate-release film coating of pharmaceutical dosage forms.
What are disadvantages of coating?
The Disadvantages of Coatings
Once a coating has been applied, it immediately begins a degradation process that will require touch-ups, maintenance, or even a complete reapplication. Coatings can also inhibit pump performance by causing obstacles or closing off passes and ports.
Do film coated tablets dissolve?
Dissolution problems with film-coated tablets occur when there is a statistically significant change in dissolution behavior after film coating (comparing film-coated tablets to uncoated ones).
What is the function of coating?
Traditionally, the primary functions of coatings are to protect and decorate substrates. More recently, growth has occurred in the research and development, as well as commercialisation, of coatings which have novel functions in addition to having traditional protection and decoration properties.
What is the principle of coating process?
Coating process: – The basic principle of tablet coating is simple. Tablet coating is an application of coating composition to a moving bed of tablets with the concurrent use of heated air to facilitate evaporation of the solvent.
What is film coating on tablets?
A film coating is a thin polymer-based coat that is typically sprayed on to a solid pharmaceutical dosage form, such as a tablet, capsule, pellet or granule. Film coating can impact both its appearance and its pharmacokinetics making it an essential process in making the final drug product.
What is the difference between film coated and uncoated tablets?
Tablets can be either coated with a sugar or film coating, or uncoated. Uncoated tablets are rougher, may be more difficult to swallow, and often leave a bad taste in the mouth when swallowed. A coated tablet generally goes down easier and with less aftertaste.
Why sugar coating is done?
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. One purpose of the sugar coating is to protect the drug inside the tablet and act as barrier to external contaminants.
When was film coating invented?
1950s
The film coating process of today was introduced in the early 1950s as an improvement on the traditional sugar-coating process.
What are the various types of film coated tablets?
Tablet coating is the outer covering of a tablet with a layer/substance.
- Sugar Coated Tablets.
- Film Coated Tablets.
- Gelatin Coated Tablets.
- Enteric Coated Tablets.
- Compression Coating Tablets.
- Other Types.
Why are pills film coated?
Most tablet manufacturers choose to film coat every product, whereas others will only apply a coating if they feel that it is essential. The most popular reason for applying a film coating is to enhance and protect the dosage form, provide branding or modify the drug release profile.
What is the thickness of powder coating?
The standard film thickness for a standard powder coating for optimum mechanicals is between 60 and 80 microns (~2-3 mils). Thickness measurements of powder can be taken before and after curing.
What is black powder coating?
Black Powder Coat
Powder coating is used as a decorative cover due to its color consistency, durable high gloss, and its ability to conceal minor surface flaws. Furthermore powder coating is very functional due to its harder finish which is scratch and ding resistant. It also has durable, anti-corrosion finishes.
Why is powder coating better than paint?
Powder coating provides better performance than wet paint—it is more resistant to chipping, scratching, and other wear because of the thermal bonding it undergoes during curing, and because it can be applied in much thicker layers.
How many types of coating are there?
Coatings are varied, but primarily fall into three categories: Architectural, Industrial, and Special Purpose.
What are the two types of tablets?
There are different types of tablets: Chewable tablets dissolve and are absorbed rapidly in the stomach, offering a quick onset of action. They may come in different flavors. Orally disintegrating tablets dissolve on the tongue.
What is coating and its types?
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.