Coextruded Antimicrobial Package Insert for Moisture-Driven Gas Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packaging methods using heat-staked antimicrobial films face issues of brittleness, contamination hazards, and inefficient moisture uptake due to partial surface blockage, leading to ineffective antimicrobial gas release.
Innovation Solution
Coextruding an active member, such as an antimicrobial film, with a carrier like nonwoven material to create a monolithic structure that enhances the active material's effectiveness and durability, allowing for efficient moisture and gas exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat staking is used to attach antimicrobial film to lidding film, then the film is secured to the package, but the film becomes brittle and falls off or separates, creating contamination hazard
Solution Approach 1:
The patent uses a composite structure consisting of a heat-resistant substrate layer and an antimicrobial film layer. The substrate provides thermal stability during heat staking while the antimicrobial film delivers its functional properties. This composite approach allows the film to withstand the heat staking process without becoming brittle or separating, eliminating the contamination hazard while maintaining reliable attachment.
2Reliability
If heat staking is used to attach antimicrobial film, then the film is secured to the lidding film, but half of the surface area is blocked and not accessible for moisture uptake and antimicrobial gas release
Solution Approach 1:
The patent divides the packaging structure into distinct functional zones: a heat-resistant substrate layer that provides attachment capability and an antimicrobial film layer that provides moisture uptake and gas release functionality. This segmentation allows the antimicrobial film to remain accessible and functional while the substrate handles the attachment task, preventing surface area blockage and maintaining high productivity for moisture uptake and antimicrobial gas release.
3Reliability
If antimicrobial film is heat staked, then it is attached to the lidding film, but the film becomes brittle and crumbles into tiny pieces
Solution Approach 1:
The patent employs a composite material system where a heat-resistant substrate provides structural integrity and thermal stability, while the antimicrobial film layer maintains its functional properties. The substrate acts as a reinforcement that prevents the antimicrobial film from becoming brittle during heat staking, thereby preserving film strength and preventing crumbling into tiny pieces while ensuring reliable attachment to the lidding film.
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 coextruded active member and carrier form a robust, efficient packaging system that maintains antimicrobial efficacy while reducing the risk of contamination and improving seal strength, ensuring effective preservation and protection of perishable products.
Implementation Method 1
efficient moisture uptake and resulting release of antimicrobial gas into headspace
Implementation Method 2
coextruding an active member, optionally in the form of antimicrobial film, with a carrier
Data Source
AI summary
A package (10) configured to preserve or prevent contamination through inhibition of pathogens of product therein includes an active member (26) co-extruded to a carrier (24). The combined active member and carrier can be attached to an interior surface of a package, optionally a lidding film (22) enclosing a cavity formed by a tray of the package.