Lyophilized Tablet Blister Structure for Moisture and Heat Control
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Solution Overview
Problem
Lyophilized orally disintegrating tablets face challenges related to heat transfer, structural integrity, moisture and oxygen transmission, and light exposure during freezing and lyophilization, which can damage the tablet's disintegrating ability and reduce shelf-life, especially for products like nicotine or cannabidiol.
Innovation Solution
A blister packaging with an opaque, metallized, and formable bottom layer comprising a multilayer structure with specific polymer and aluminum layers to enhance heat transfer, reduce moisture and oxygen transmission, and shield against light, featuring pockets for lyophilized rapidly infusing compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional blister packaging is used for lyophilized orally disintegrating tablets, then the packaging structure is simple, but heat transfer during freezing and lyophilization is insufficient and moisture transmission damages the tablet
Solution Approach 1:
The patent employs a multilayer composite packaging structure consisting of an outer layer, intermediate layer, and inner layer, where each layer serves specific functions. The outer layer provides structural support, the intermediate layer facilitates heat transfer during lyophilization, and the inner layer offers moisture and light barrier protection. This composite structure resolves the contradiction by maintaining tablet integrity through specialized material combinations while preserving reasonable packaging complexity.
Solution Approach 2:
Different regions of the packaging are designed with locally optimized properties: the bottom layer features enhanced thermal conductivity for heat transfer during freezing, the side walls provide structural containment, and the inner layer delivers moisture and light barrier functions. This local quality approach allows each packaging region to address specific challenges without requiring complete redesign of the entire structure.
2Object-affected harmful factors
If opaque metallized bottom layer is used to shield against light and reduce moisture transmission, then protection against harmful factors improves, but heat transfer during freezing and lyophilization is reduced
Solution Approach 1:
The packaging design applies different optical and thermal properties to different layers: the outer layer uses opaque metallized materials for light blocking and moisture barrier, while the inner layer incorporates transparent or translucent materials with high thermal conductivity to facilitate heat transfer during freezing and lyophilization. This local differentiation resolves the contradiction between protection and heat transfer.
Solution Approach 2:
The multilayer composite structure combines materials with contrasting properties: outer layers use metallized polymers for barrier protection, while inner layers use transparent polymers with good thermal conductivity. This composite approach allows simultaneous achievement of light/moisture shielding and effective heat transfer during the lyophilization process.
3Strength
If standard blister packaging is used, then manufacturing is simple, but structural integrity of the ODT and packaging is compromised during lyophilization
Solution Approach 1:
The packaging uses a multilayer composite structure where each layer contributes specific mechanical properties: the outer layer provides rigidity and structural support, the intermediate layer offers flexibility and stress distribution, and the inner layer provides barrier protection. This composite construction enhances overall structural integrity during lyophilization while maintaining manufacturability through established lamination and sealing technologies.
Solution Approach 2:
The packaging design optimizes parameters such as layer thickness, material composition, and sealing strength to match the specific requirements of lyophilized ODTs. By adjusting these parameters within standard manufacturing capabilities, the packaging achieves enhanced structural integrity without requiring complex or specialized manufacturing processes.
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 packaging maintains the disintegrating ability of lyophilized tablets by controlling heat transfer, reducing frost heave, and protecting against moisture and light, ensuring effective storage and rapid disintegration.
Implementation Method 1
an aluminum lidding layer... an aluminum well layer
Implementation Method 2
an aluminum lidding layer... an aluminum well layer
Implementation Method 3
a first thermoplastic polymer well layer... a second thermoplastic polymer well layer
Implementation Method 4
a first polyamide layer... a second polyamide layer
Implementation Method 5
a thermoplastic polymer lidding layer... a first thermoplastic polymer well layer... a second thermoplastic polymer well layer
Data Source
AI summary
A container for a lyophilized rapidly infusing composition is described. The container comprises a planar lidding layer attached to a well layer comprising pockets for the therapeutic product. The lidding layer may comprise an aluminum layer, a thermoplastic polymer layer, and a labeling layer. The well layer may comprise an aluminum layer, two polyamide layers, and two thermoplastic polymer layers. A drug product assembly is also disclosed, which includes at least one therapeutic product sealed within the at least one pocket of the container.