Polyamide Drug-Resistant Laminate for Anti-Scalping Packaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current pharmaceutical packaging materials for drug delivery patches, such as polyacrylonitrile (Barex®) and cyclic olefin copolymers (COC), are not readily available, difficult to process, and expensive, while providing inadequate drug resistance against scalping.
Innovation Solution
A polyamide-based laminate is developed with a polyamide sealing layer laminated to an aluminum foil layer, enhanced by additional layers for strength and support, using coextrusion and orientation techniques to improve drug resistance, and formed into pouches via heat-sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyacrylonitrile (Barex®) or cyclic olefin copolymers (COC) are used for pharmaceutical packaging, then drug resistance is improved, but availability deteriorates and processing difficulty increases
Solution Approach 1:
The patent changes the material parameters by selecting polyamide 6 with specific intrinsic viscosity (0.6-1.2 dL/g) and melting point (210-230°C) characteristics, transforming it into an effective anti-scalping barrier material that was previously not suitable for this application
Solution Approach 2:
The patent creates a composite structure by laminating polyamide 6 sealing layer with other compatible polymers or coatings, combining the drug resistance properties of polyamide with the advantages of other materials to achieve both effectiveness and processability
2Ease of manufacture
If polyamide sealing layer is used, then ease of manufacture is improved, but drug resistance must be enhanced through additional processing
Solution Approach 1:
The patent applies preliminary orientation treatment to the polyamide sealing layer before final packaging formation, pre-aligning the polymer chains to maximize barrier properties against drug scalping while maintaining ease of subsequent manufacturing processes
Solution Approach 2:
The patent modifies the polyamide 6 material parameters through controlled crystallization and orientation processes, changing its physical structure to provide enhanced drug resistance while maintaining the ease of manufacture inherent to polyamide materials
3Reliability
If laminate structure with multiple layers is used, then drug resistance is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by providing anti-scalping protection only where needed - specifically in the sealing layers that contact the drug package - while other portions of the packaging can use simpler, less expensive materials
Solution Approach 2:
The patent uses composite material structures combining polyamide 6 with other compatible layers, where each layer provides specific functions (barrier, sealing, structural support) to achieve enhanced drug resistance through functional specialization rather than uniform complexity
4Manufacturing precision
If coextrusion of sealing sublayer and backing sublayer is used, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the sealing function and backing support function into a single coextruded composite layer, producing both layers simultaneously in one extrusion process to achieve precise thickness control and consistent layer bonding without requiring separate lamination steps
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 laminate effectively prevents drug absorption, maintains drug integrity, and provides a flexible, durable packaging solution with improved barrier properties against scalping, outperforming existing materials in maintaining drug efficacy.
Implementation Method 1
The drug resistant laminate includes a polyamide sealing layer laminated to an aluminum foil layer to prevent drug absorption or permeation
Implementation Method 2
the sealing sublayer has a lower melting point than the backing sublayer, enabling the sealing sublayer to more easily seal to another drug resistant laminate to form the pouch without melting other components
Implementation Method 3
the polyamide sealing layer may be stretched to mono- or bi-directionally orient the polyamide sealing layer, thereby improving the drug resistant properties
Implementation Method 4
The aluminum foil layer is affixed to the polyamide sealing layer via a first lamination layer
Implementation Method 5
The pouch is formed by heat-sealing two drug resistant laminates together or by folding one drug resistant laminate and then heat-sealing the laminate to itself
Data Source
AI summary
A drug resistant laminate is provided. The drug resistant laminate includes a polyamide sealing layer, an aluminum foil layer, and a support layer. The polyamide sealing layer is configured to contact a drug. The aluminum foil layer is affixed to the polyamide sealing layer via a first lamination layer. The support layer is affixed to the aluminum foil layer via a second lamination layer. The polyamide sealing layer may be a coextruded layer including a sealing sublayer arranged to contact the drug and a backing sublayer arranged to be affixed to the aluminum foil layer via the first lamination layer. A melting point of the sealing sublayer may be is less than a melting point of the backing sublayer. Similarly, a melting point of the support layer may be greater than the melting point of the backing sublayer of the polyamide sealing layer.