Flexible Package Security Strip Anti-Counterfeiting
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Solution Overview
Problem
Flexible packages lack effective anti-counterfeiting features and often have poor sealing integrity, which can lead to product safety risks and compromised shelf life due to low barrier properties of transparent windows and four-layer sealing issues during cross-sealing processes.
Innovation Solution
A flexible package design incorporating a longitudinal polymeric security strip with high barrier structure, which can be sealed on the inner or outer surface, featuring overt or covert security features to prevent counterfeiting, and is made from materials like polyethylene, polypropylene, or metallized films to enhance sealing strength and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent window is added to the flexible package to allow customers to view the product inside, then customer trust and product visibility are improved, but the barrier properties are reduced and shelf life is compromised
Solution Approach 1:
The patent applies local quality by creating a specific region (security strip area) with different optical properties than the rest of the transparent window. The security strip incorporates opaque or translucent portions that selectively block light in specific areas while maintaining overall transparency for product viewing. This allows the package to simultaneously provide product visibility and enhanced security features without compromising the entire window's barrier properties.
Solution Approach 2:
The patent uses composite materials by combining transparent film with security strips that may be opaque, translucent, or have varying transparency levels. The security strip itself can be a composite structure incorporating multiple layers or materials (such as metallized films, pigmented layers, or multi-layer laminates) that provide both security functionality and controlled optical properties, thereby maintaining barrier performance while enabling security features.
2Reliability
If a security strip is added to provide anti-counterfeiting features, then security against counterfeiting is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The security strip serves multiple functions simultaneously: it provides anti-counterfeiting security features, acts as a sealing surface for heat sealing, and can contribute to the overall barrier properties of the package. The strip can be integrated into the package structure such that it performs both security and packaging functions, reducing the need for separate components and simplifying the overall device complexity.
Solution Approach 2:
The patent applies segmentation by dividing the package structure into distinct functional zones: transparent window areas for product viewing, security strip areas for anti-counterfeiting, and sealing areas for closure. This segmentation allows each zone to be optimized for its specific function while maintaining overall package integrity. The security strip can be applied as a separate component or integrated during the packaging process, allowing for modular manufacturing approaches.
3Strength
If four layers of packaging substrate are present during cross sealing, then package structure integrity is improved, but sealing quality deteriorates due to poor sealing in the four-layered region
Solution Approach 1:
The patent applies local quality by creating a localized sealing surface on the security strip that is specifically optimized for heat sealing. This sealing surface can have different properties (such as heat sealable coating, appropriate thickness, or material composition) compared to the rest of the security strip or package structure. This allows the sealing region to achieve reliable sealing even when multiple layers are present, while the rest of the package maintains its four-layer structure for integrity.
Solution Approach 2:
The security strip acts as an intermediary element that facilitates sealing between the package layers. The strip's sealing surface serves as a mediator that enables reliable heat transfer and bonding during the sealing process, overcoming the difficulties of sealing through four layers. The strip can be positioned strategically to provide a dedicated sealing interface that simplifies the sealing process and improves sealing quality.
4Reliability
If the security strip is made opaque to provide security features, then anti-counterfeiting visibility is improved, but product visibility through the package is reduced
Solution Approach 1:
The patent applies local quality by creating specific opaque or translucent regions within the security strip at predetermined locations, while leaving other portions transparent or translucent. This allows security features to be visible in specific areas (such as holographic elements, security threads, or printed security markings) while the rest of the package maintains transparency for product viewing. The selective application of opacity enables both security and product visibility requirements to be met simultaneously.
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 solution provides stringent security against counterfeiting while maintaining package integrity and shelf life, ensuring safer and more reliable packaging for products like food and beverages, with improved sealing strength and visibility of security features.
Implementation Method 1
The polymeric security strip has a high barrier structure, heat sealed on the inner surface of the panel edges overlapping the strip edges
Data Source
AI summary
The present invention relates to a flexible package for providing security against counterfeiting. The flexible package includes a plurality of panels made of a flexible polymeric substrate, which further includes a front panel, a rear panel arranged in opposite to the front panel defining an interior space of the package and at least one longitudinal narrow window portion on at least one panel. A transparent or translucent polymeric security strip is having a clear high barrier coating, is sealed over the window portion towards inner side of the panel overlapping the edges of the window portion but not overlapping the entire panel, a security feature is provided on the strip on at least one of its surface at a predefined location or random places or all over the strip surface for securing the package against counterfeiting.