Radiofrequency Coated Dosage Form for Chipping Resistance
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Solution Overview
Problem
Existing soft tablets designed to disintegrate in the mouth are fragile, brittle, and prone to chipping, requiring complex and costly processing steps, and existing coating methods do not adequately address these issues.
Innovation Solution
A process using radiofrequency energy to apply coating layers to tablets, comprising a first powder layer with a surface stabilizing agent, a second layer with an activator, and a third layer with another surface stabilizing agent, where the activator has a Q value less than 50 and the stabilizing agents have a Q value greater than 65, followed by heat application to melt or soften the stabilizing agents, forming a unified layer that enhances structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reduced compaction pressures are employed to make softer tablets, then the tablet hardness is reduced and bite-through is easier, but the tablet becomes more fragile, brittle, and easily chipped
Solution Approach 1:
A coating layer is applied to the tablet surface before final compaction. This pre-applied coating serves as a protective barrier that prevents chipping and cracking during handling and administration, allowing the tablet to be manufactured at lower compaction pressures while maintaining structural integrity.
Solution Approach 2:
The tablet consists of a composite structure with a core material and a coating layer having different mechanical properties. The coating layer is specifically designed to be more resistant to chipping and cracking than the core material, creating a composite structure where each layer performs its specific function - the core provides drug delivery while the coating provides mechanical protection.
2Reliability
If complex and costly processing steps are employed to address fragility, then the tablet structural integrity is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The coating application and tablet compaction processes are merged into a single integrated operation. The coating is applied to the die cavity surface before the powder is compacted, combining what would traditionally be separate coating and compression steps into one efficient process, thereby reducing manufacturing complexity while maintaining tablet integrity.
3Reliability
If a coating is applied to the tablet, then the fragility and chipping are reduced, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The coating material is applied directly to the die cavity surface, and the tablet itself serves as the application tool during compaction. As the powder is compressed against the coated die surface, the coating is transferred to the tablet in a self-service manner, eliminating the need for separate coating equipment and simplifying the manufacturing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The process results in tablets that are less brittle and resistant to chipping, with improved structural integrity and faster disintegration, enhancing compliance and ease of administration, particularly for pediatric and geriatric patients.
Implementation Method 1
applying radiofrequency energy for a sufficient period of time to the shape of step (i)... transforming electromagnetic energy to thermal energy
Implementation Method 2
applying heat for a sufficient period of time to the shape of step (i) to melt or soften the surface stabilizing agents
Data Source
AI summary
The present invention is directed to a process for making a dosage form comprising at least one pharmaceutically active ingredient, the method comprising the steps of (i) providing a shape of the dosage form comprising at least two powder layers, wherein the first powder layer comprises a surface stabilizing agent and the second powder layer comprises at least one activator and the pharmaceutically active ingredient, wherein the activator has a Q value of less than 75; (ii) applying a radiofrequency energy for a sufficient period of time to the shape of step (i); and (iii) applying heat for a sufficient period of time to the shape of step (i).