Cellulose Bag-in-Box Packaging for Paper-Stream Recyclability
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Solution Overview
Problem
Existing bag-in-box packages with complex multi-material laminates offer low sustainability and recyclability, leading to environmental pollution and high resource consumption.
Innovation Solution
A bag-in-box package composed of a cellulose fiber box and cellulose-based bag with an oxygen and moisture barrier, connected non-detachably, allowing recycling in paper streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex multi-material laminates are used to provide protection and barrier functions, then the package achieves high functionality, but the recyclability and sustainability deteriorate
Solution Approach 1:
The patent applies homogeneity by using cellulose-based materials for both the box and the bag, creating a uniform material composition throughout the package. This allows the entire package to be recycled together in paper recycling streams, eliminating the need to separate different material types while maintaining protective and barrier functions through the inherent properties of cellulose and its derivatives.
Solution Approach 2:
The patent uses composite materials by combining cellulose fiber material for the box structure with cellulose-based barrier layers (such as coated cellulose or cellulose films) for the bag. This composite approach provides both mechanical protection and moisture/oxygen barrier functions while keeping the entire package compostable and recyclable in organic matter treatment facilities.
2Ease of manufacture
If the box and bag are made from the same recyclable material, then the recyclability is improved, but the barrier function against oxygen and moisture may deteriorate
Solution Approach 1:
The patent applies local quality by differentiating the properties of different parts of the package: the box is made of cellulose fiber material providing mechanical strength and structure, while the bag incorporates additional cellulose-based barrier layers (such as coated cellulose, cellophane, or cellulose films) that provide enhanced oxygen and moisture barrier functions. Each component has optimized local properties for its specific function while maintaining overall recyclability.
Solution Approach 2:
The patent achieves universality by using cellulose-based materials that can fulfill multiple functions: the cellulose fiber material provides structural integrity for the box, while modified cellulose forms (coated cellulose, cellophane, cellulose films) provide both barrier functions and maintain compatibility with recycling processes. This multi-functional approach allows a single material family to address both protection and recyclability requirements.
3Ease of operation
If the bag is detachably connected to the box, then the ease of operation is improved, but the recyclability deteriorates due to separation of components
Solution Approach 1:
The patent applies merging by creating a non-detachable connection between the bag and the box, integrating them into a single unified package structure. This ensures that the entire package (box, bag, and contents) is disposed of and recycled together as one unit in organic matter treatment facilities, preventing separation and maximizing recyclability while maintaining ease of use during the product's functional life.
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 package achieves high functionality with improved recyclability, reducing environmental impact by enabling the entire package to be recycled as a unit, thus minimizing separation of components.
Implementation Method 1
a bag comprising cellulose-based material and having an oxygen and moisture barrier function
Implementation Method 2
a bag comprising cellulose-based material and having an oxygen and moisture barrier function
Data Source
AI summary
The invention relates to a bag-in-box package (1) being made of a material composition which is recyclable in the paper recycling stream. The package (10) comprises: a box (10) made of a cellulose fiber material, and a bag (30) comprising cellulose-based material and having an oxygen and moisture barrier function. The bag (30) is placed at least partially inside the box (10) and non-detachably connected to the box (10).