Cellulose Multilayer Barrier Structure Without Plastic Coatings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The demand for packaging materials that are renewable, recyclable, and biodegradable is increasing, but existing cellulose-based packaging often requires non-biodegradable plastic coatings for barrier properties, complicating recycling and posing environmental concerns.
Innovation Solution
A multilayer product comprising a cellulose fiber-based base layer and a barrier layer with at least 10% hydrolysed cellulose fibers, which provides barrier properties without the need for plastic coatings, allowing for biodegradability and easy recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic coatings are applied to cellulose-based packaging to impart barrier properties, then barrier performance is improved, but biodegradability is lost and recycling becomes complicated
Solution Approach 1:
The patent changes the chemical parameters of cellulose by applying hydrolysis treatment to produce hydrolysed cellulose fibers. This chemical modification enables the material to achieve barrier properties against oxygen and moisture without requiring plastic coatings, thus maintaining biodegradability while improving protective functionality.
Solution Approach 2:
The patent creates a composite material structure by combining hydrolysed cellulose fibers with native cellulose fibers in a multilayer configuration. The hydrolysed cellulose layer (containing at least 10% by weight of hydrolysed cellulose fibers) provides barrier functionality, while the native cellulose layers maintain biodegradability and structural integrity, eliminating the need for plastic coatings.
2Reliability
If plastic coatings are applied to provide barrier properties, then protection is improved, but recyclability is complicated
Solution Approach 1:
The patent changes the chemical parameters of cellulose by applying hydrolysis treatment to produce hydrolysed cellulose fibers. This chemical modification enables the material to achieve barrier properties against oxygen and moisture without requiring plastic coatings, thus maintaining biodegradability while improving protective functionality.
Solution Approach 2:
The patent uses homogeneous cellulose-based materials throughout the packaging structure, including both native and hydrolysed cellulose fibers, without introducing heterogeneous plastic coatings. This homogeneity in material composition simplifies recycling processes as the entire structure can be processed together without separation requirements.
3Object-generated harmful factors
If hydrolysed cellulose fibers are used in the barrier layer, then barrier properties are achieved without plastic, but the complexity of fiber processing increases
Solution Approach 1:
The patent applies hydrolysis treatment to cellulose fibers in advance during the manufacturing process to create hydrolysed cellulose fibers with desired barrier properties. This preliminary chemical modification allows the fibers to self-assemble into a barrier structure when combined with native cellulose fibers, eliminating the need for additional plastic coating steps and reducing overall processing complexity.
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 multilayer product achieves effective barrier properties while being fully biodegradable and recyclable, reducing environmental impact and simplifying recycling processes.
Implementation Method 1
The barrier layer may comprise at least 10% (w/w) of hydrolysed cellulose fibers
Data Source
AI summary
A multilayer product is disclosed. The multi-layer product may include a cellulose fiber-based base layer and a barrier layer. The barrier layer may include at least 10% (w/w) of hydrolysed cellulose fibers.