Tablet Coating in the pharmaceutical industry

Tablet coating machines

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Tablet Coating with the Tablet Coaters from L.B. Bohle

For the pharmaceutical industry, L.B. Bohle offers flexible, economical and resource-saving technology solutions for coating tablets that optimise the production process. The product range includes laboratory and production-scale systems that enable a wide range of options and product extensions to ensure an efficient and sustainable mixing process.

Find the ideal machine for your production now

L.B. Bohle offers you a comprehensive range of state-of-the-art machines and systems for your tablet production. Individually tailored to your requirements, our machines optimise your production processes and ensure optimum quality. Our machine finder will guide you quickly and easily to the optimum solution for your processes.

With L.B. Bohle, you can achieve the highest production efficiency and maximum product quality.

Process for coating tablets

Tablet Coating or film coating is a crucial and demanding process step in tablet production in the pharmaceutical industry. L.B. Bohle is the technology leader on the market with its range of coating systems for pharmaceutical applications.
Tablet Coating or film coating processes are divided into the basic operations

  1. Spraying
  2. Mixing
  3. Drying

Each individual operation must be carefully optimised in coordination with the others.
The coaters from L.B. Bohle guarantee first-class product processing with high profitability. Optimum running of the cores is ensured by a flat tablet bed in a long drum geometry and infinitely variable adjustment of the angle of inclination. The systematic forced guidance in the drum ensures constant movement of the product. No twins are formed. Solids and paint loss are minimal.

Methods, processes and technologies in coating technology

Tablet Coating is a central process in pharmaceutical manufacturing. As tablets are the most commonly used oral dosage form , the coating plays a decisive role in the quality, safety and efficacy of the drug.

Tablet Coating

Tablet Coating involves applying a thin layer of polymers and other excipients such as colourants or humectants to the tablet. This coating fulfils several functions: It can specifically control the release of the active ingredient, protect the active ingredient from light, moisture or oxygen, mask unpleasant flavours and improve the swallowability of the tablet.

Active Pharmaceutical Ingredient (API) coating

Active Pharmaceutical Ingredient (API) coating is becoming increasingly important. Tablets are specifically coated with one or more Active Pharmaceutical Ingredients (API), for example in combination preparations or for incompatible APIs. Tablet Coating also enables the combination of different release profiles within one tablet: while the core contains the slow-release component, the film coating provides the immediate initial dose.

Uniformity

Complex coating formulations can contain up to four different film coatings, which leads to longer process times. In order to achieve efficient and regulatory-compliant results, high coating uniformity, i.e. the uniformity of the tablet coating, is of central importance.

Requirements for the technology of pharmaceutical coating of tablets

Different active ingredient release profiles can be realised through the targeted coating of tablets. From enteric-coated to sustained release to immediate release. This ensures that the Active Pharmaceutical Ingredient (API) acts exactly where it is needed. And at the desired speed.

In addition to controlling the release, the Tablet Coating offers further functional benefits. It reliably protects the tablet from external influences such as light, air or moisture and thus contributes to stability and extended shelf life.

The sensory properties of the tablets can also be specifically improved by coating. Flavour or olfactory self-protection (e.g. for bitter or strong-smelling Active Pharmaceutical Ingredients (API)) and better swallowability increase patient acceptance.

Another advantage of Tablet Coating is the possibility of colour coding. Coloured coatings make it easier to visually distinguish between different products and can also be used as a brand-defining element.

Specialised Tablet Coating systems / Tablet Coaters are used to reliably implement all of these functions. They ensure a uniform, validatable and reproducible coating and high uniformity. This is a decisive factor for quality, efficacy and regulatory safety.

Areas of application for Tablet Coaters

Tablet Coaters or Tablet Coating systems are used in the chemical, food and pharmaceutical industries. They are also used in the manufacture of food supplements. Astablets are the most common form of oral drug administration, Tablet Coating is a key factor in their quality, efficacy and safety. Tablet Coaters are used from Research & Development through to high-volume production. In addition to efficiency , coating uniformity is also crucial. Coating uniformity (uniformity of the tablet coating) is indicated by the relative standard deviation (RSD) and has a high analytical significance. The lower the RSD value, the more uniform the tablet coating.

Product variety

L.B. Bohle offers a comprehensive range of Tablet Coaters for coating tablets. The BFC Film Coater is the high-end system. Outstanding coating results are also achieved with the BTC Tablet Coater. The BFC 50 Tripan Tablet Coater stands for maximum flexibility thanks to its three interchangeable drums. The BFC 5 Laboratory Coater is the first choice on the market for Research & Development or small batches. L.B. Bohle also sets the standard in Continuous Manufacturing with the semi-continuous Coater - KOCO®.

Modification of active ingredient release

A key area of application for Tablet Coaters is the targeted control of the release of the Active Pharmaceutical Ingredient (API). Depending on the formulation, tablets can be provided with enteric coatings so that the Active Pharmaceutical Ingredient (API) only dissolves in the small intestine. Retard coatings ensure a delayed release of the active ingredient over a longer period of time. Quick-release coatings are also possible if a rapid onset of action is required.

Active ingredient coating

One specialised field of application is the direct application of Active Pharmaceutical Ingredients (API) to the tablet itself. This makes it possible, for example, to realise combination preparations with several, even incompatible, Active Pharmaceutical Ingredients (API) in one tablet. Different release profiles can also be combined within a single dosage form.

Masking of taste and odour

Many Active Pharmaceutical Ingredients (API) have a bitter or unpleasant flavour. A functional film coating can effectively mask these sensory properties. This improves patient acceptance.

Protection from external influences

Coatings provide reliableprotection against moisture, oxygen and the effects of light. This increases the stability and extends the shelf life of the tablets. This is particularly important for sensitive Active Pharmaceutical Ingredients (API) or those susceptible to oxidation.

Make an enquiry now

Do you have any questions about our machines, services or solutions? Our team will be happy to help you! Get in touch with us. We will advise you individually and work with you to find the best solution for your requirements. We look forward to your enquiry!

Burkhard Schmidt

Sales Director

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