The most widely used polymers in non-functional film coating are cellulose derivatives such as hypromellose. Plasticizers, used to improve the flexibility of the film formed and prevent it from cracking or breaking. They work by weakening the attraction between the polymer molecules to make the film more malleable.
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Which of the following polymer is widely used in film coating of tablet Mcq?
| Q. | Which of the following polymer is widely used in film coating of tablets? |
|---|---|
| B. | Syrup |
| C. | HPMC |
| D. | Starch |
| Answer» c. HPMC |
Which ingredients are commonly used as coating agents for film coating?
What is the composition of a typical coating formula?
- Cellulosics, such as hydroxypropyl methyl cellulose (HPMC) , Hydroxypropyl cellulose (HPC), and ethyl cellulose (EC)
- Vinyls, such as polyvinyl alcohol.
- Acrylics, such as methacrylic acid / ethylacrylate copolymers (often used for enteric or delayed release coatings)
What is film coating used for?
Film coating is a common step in tablet manufacture that can be used to improve product appearance, organoleptic properties, or to facilitate swallowing. Functional film coats can also be used as a part of the product’s stabilisation strategy and to modify or delay drug release.
What is polymer in tablet coating?
Polymers coating. Film-coatings polymers are used to improve product appearance and to protect the drug substance from atmospheric conditions. Hydroxyproply methyl cellulose (HPMC) Methyl hydroxyethyl cellulose. Ethylcellulose.
Which of the following ingredient is not used as a coating agent for film coating?
| Q. | The following ingredients are commonly used as coating agents for film coating except: |
|---|---|
| B. | Carnuba Wax |
| C. | HEC |
| D. | Sodium CMC |
| Answer» b. Carnuba Wax |
What are film tablets made from?
1. Polymers
- Cellulose ethers e.g., Hydroxy Propyl Methyl Cellulose (HPMC), Hydroxy Propyl Cellulose (HPC), Ethyl Cellulose (EC), Methyl Cellulose.
- Vinyl polymers e.g., polyvinyl pyrrolidone.
- Glycols e.g., high molecular weight polyethylene glycol.
- Acrylic acid polymers e.g., Eudragits.
Which of these is used as a film former in film coating process?
Polymers / Film Formers
Amongst the vast majority of the polymers used in film coating are cellulose derivatives or acrylic polymers and copolymers.
How is film coating done?
Film coating
The process involves spraying of a solution of polymer, pigments and plasticizer onto a rotating tablet bed to form a thin, uniform film on the tablet surface. The choice of polymer mainly depends on the desired site of drug release (stomach/ intestine), or on the desired release rate.
Why the film coating is widely used over the sugar coating?
Advantages of film coating over sugar coating
Enhances the elegance and glossy appearance of coated tablets. 3. Minimal weight increase (typically 2–3% of tablet core weight) as opposed to more than 50% with sugarcoating. 4.
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.
What are coating materials?
Typical coating materials are:
Pure metals, such as Aluminum (Al), Copper (Cu), Molybdenum (Mo), etc. Alloys, such as Nickel Chrome (NiCr), Nickel Aluminum (NiAl), Aluminum Bronze (CuAl), etc. Ceramic (Oxide), such as Aluminum Oxide (Al2O3), Chrome Oxide (Cr2O3), Zirconium Oxide (ZrO2), Titanium Oxide (TiO2), etc.
Where are polymer coatings used?
Polymer coatings can be applied to metals, ceramics as well as synthetic materials. They are temperature-resistant up to approx. 535°F (280°C) and FDA-approved and are therefore used primarily for food production (e.g. containers, multi-head scales, frying pans).
How are polymer coatings applied?
The polymeric coating process comprises applying a polymeric material onto a supporting substrate and coating the substrate surface. Polymeric coatings can be obtained using natural and synthetic rubber, urethane, polyvinyl chloride, acrylic, epoxy, silicone, phenolic resins or nitrocellulose, etc.
What’s film coated tablet?
film-coating in the Pharmaceutical Industry
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.
What is the difference between sugar coating and film coating?
Film coating involves the deposition, usually by spraying a liquid coating system, of a thin film of a polymer-based formulation onto the surface of a tablet, capsule or multiparticulate core. Sugar coating is a more traditional process closely resembling that used for coating confectionery products.
Which of the following is used as tablet coating?
The K-30 is commonly used as a binder and coating formulation for tablets as it has an excellent solubility when it is exposed to liquid components such as water, intestinal fluid, gastric and even organic solvents. Povidone can also be cross-linked with other materials to form films that have enteric properties.
Which is the most commonly used to polish the tablet?
Answer: An application of wax such as carnuba wax, candelila wax, beeswax and hard paraffin is used to polish the tablets.