Electrodeposition Tablet Manufacturing via Substrate Stripping
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Solution Overview
Problem
Pharmaceutical manufacturing is inefficient for producing smaller batches of less common pharmaceuticals due to the inflexibility of traditional batch powder processing technology, which is costly and inefficient for smaller production scales.
Innovation Solution
The use of electrodeposition methods, such as electrospinning, to fabricate tablets by depositing materials onto a substrate and then stripping them into a die cavity, allowing for the formation of tablets through compression, enabling continuous manufacturing and reducing exposure to airborne particulates and production time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional batch powder processing technology is used, then manufacturing precision and reliability are maintained, but productivity and adaptability deteriorate due to inflexibility for different batch sizes
Solution Approach 1:
The patent replaces traditional mechanical powder processing systems with an electrohydrodynamic system that uses electric fields to deposit materials. The emitter generates charged liquid jets or droplets that are deposited onto a substrate under electrical control, eliminating the need for mechanical powder handling, mixing, and compression equipment. This substitution enables continuous manufacturing while maintaining product quality and reliability.
Solution Approach 2:
The patent changes the physical state and deposition parameters by using liquid materials that are electrohydrodynamically deposited and then dried to form solid tablets. By controlling electrical parameters (voltage, current, field strength) and fluid parameters (flow rate, viscosity, conductivity), the system can adapt to different batch sizes and pharmaceutical products, improving both productivity and versatility while maintaining manufacturing reliability through precise parameter control.
2Ease of manufacture
If traditional batch manufacturing is used, then equipment costs are justified for large batches, but adaptability and ease of manufacture deteriorate for smaller batches
Solution Approach 1:
The patent creates a universal manufacturing system where a single emitter design can produce different pharmaceutical tablets by simply changing the liquid material fed to the emitter. The same basic apparatus (emitter, substrate, drying chamber) can manufacture various tablet types, sizes, and formulations, eliminating the need for dedicated equipment for different products and batch sizes. This multi-functionality greatly improves ease of manufacture while reducing device complexity compared to traditional specialized equipment.
3Productivity
If electrodeposition methods are used, then productivity and adaptability improve for various batch sizes, but device complexity increases due to electrical control systems
Solution Approach 1:
The patent replaces complex mechanical batch processing equipment with a simpler electrohydrodynamic system. Instead of mechanical powder feeders, mixers, and compressors, the system uses an emitter with electrical controls to directly deposit material onto substrates. The electrical control system, while adding some complexity, is simpler than the mechanical systems it replaces and enables continuous high-speed manufacturing, improving productivity significantly.
4Manufacturing precision
If traditional powder processing is used, then manufacturing precision is maintained, but loss of substance increases due to airborne particulates
Solution Approach 1:
The patent eliminates mechanical powder handling that generates airborne particulates by using electrohydrodynamic deposition of liquids. The material is delivered as controlled liquid jets or droplets that are directly deposited onto the substrate, preventing powder dusting and spillage. This substitution maintains precise material placement control while dramatically reducing substance loss and improving workplace safety.
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
This approach allows for efficient production of tablets with reduced user exposure to particulates, increased speed, and lower costs, while being suitable for both small and large-scale manufacturing, including heat-sensitive materials, and minimizing drying time.
Implementation Method 1
establishing a first electric potential at a source containing a material, and establishing a second electric potential, different than the first electric potential, at a substrate comprising an elongated rod such that the material is electrodeposited on the elongated rod
Implementation Method 2
a die comprising a cavity, the die configured to strip material from an exterior surface of the substrate when the die and the substrate are moved relative to each other
Implementation Method 3
an actuator associated with the substrate and/or the die and configured to move the die and the substrate relative to each other
Implementation Method 4
applying a compressive force to the accumulated material within the cavity of the die to form the tablet
Data Source
AI summary
Methods and systems for manufacturing a tablet are generally provided. Certain embodiments comprise electrodepositing (e.g., electrospinning) a material (e.g., the tablet material, for example, within a fluid) onto a substrate. The substrate can be, for example, an elongated rod. In some such embodiments, after material has been electrodeposited onto the substrate, a die comprising a cavity and the substrate can be moved relative to each other such that the electrodeposited material is at least partially stripped from the substrate and/or at least partially deposited into the cavity of the die. Some embodiments comprise compressing the material in the cavity to form a tablet.