Peelable Vacuum Skin Package for Clean Material Separation
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Solution Overview
Problem
Existing packaging solutions face challenges in achieving effective separation of composite materials while maintaining functionality and integrity, including material compatibility, mechanical strength, barrier properties, manufacturing efficiency, recycling infrastructure, and consumer acceptance.
Innovation Solution
A vacuum skin package with a fiber-based packaging base and a peelable skin package composite, where the product carrier film is adhesively attached to the packaging base with low peel strength, allowing for separation without fiber-tear, and featuring a folding line and undulating line configuration for easy expansion and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional adhesive bonding is used to attach film to fiber-based packaging, then strong bonding and mechanical strength are achieved, but complete separation becomes difficult and fiber-tear occurs during recycling
Solution Approach 1:
The adhesive bonding parameters are changed by controlling the peel strength to be within a specific range (0.1-1.0 N/mm). This parameter control allows the bonding to be strong enough for mechanical strength during use, but weak enough to enable complete separation without fiber-tear during recycling processes.
Solution Approach 2:
The packaging design enables complete separation of the film layer from the fiber-based packaging base, allowing the fiber-based material to be recovered and recycled independently. The controlled adhesive bonding ensures that separation occurs cleanly without damaging the fiber structure, facilitating material recovery and reuse.
2Reliability
If strong adhesive bonding is used to ensure packaging integrity, then structural strength is maintained, but clean separation of materials is compromised
Solution Approach 1:
The adhesive bonding strength parameter is precisely controlled to fall within the range of 0.1-1.0 N/mm. This parameter optimization ensures sufficient bonding for packaging integrity during use, while preventing excessive bonding that would cause fiber-tear during separation and recycling.
3Area of stationary object
If multi-layer composite packaging is used to improve barrier properties, then protection against moisture and oxygen is enhanced, but material separation and recycling become more difficult
Solution Approach 1:
The packaging is segmented into distinct layers: a fiber-based packaging base and a film layer (product carrier film and skin film). These segmented layers are designed with controlled adhesive bonding between them, enabling easy separation while maintaining individual barrier functions. The segmentation allows each material to be processed separately in recycling facilities.
Solution Approach 2:
The packaging uses composite materials combining fiber-based materials and film materials in a specific configuration. The composite structure provides enhanced barrier properties through the synergistic effect of different materials, while the controlled adhesive bonding between layers enables straightforward separation for recycling purposes.
4Ease of manufacture
If conventional packaging designs are used, then manufacturing simplicity is maintained, but effective material separation for recycling is not achieved
Solution Approach 1:
The adhesive bonding strength parameter is controlled to a specific range (0.1-1.0 N/mm) that enables easy separation during recycling. This parameter change does not significantly complicate manufacturing, as standard adhesive application processes can be used, but it dramatically improves recycling efficiency by allowing clean separation of materials.
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 enables clean separation of packaging materials, maintains the integrity of the packaging during use, minimizes plastic consumption, and facilitates efficient recycling by ensuring that plastic and fiber-based materials are separated automatically upon opening.
Implementation Method 1
a product carrier film (40), that is adhesively attached to a front side of said packaging base (20) such that it can be peeled from said packaging base (20) without causing fiber-tear
Data Source
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AI summary
Packaging with separable composite materials, and more specifically a vacuum skin package having a fiber-based packaging base from which a skin package composite is peelable and removable without fiber-tear.