Furan-Based Polyester Can for Recyclable Beverage Packaging
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Solution Overview
Problem
Traditional beverage containers made from glass, plastic, and aluminum require significant energy to produce and are not environmentally friendly, leading to waste and environmental concerns, while bioplastics offer a sustainable alternative but lack effective recycling methods.
Innovation Solution
Development of a beverage can using furan-based polyesters such as poly(ethylene 2,5-furan dicarboxylate), poly(propylene 2,5-furandicarboxylate), and their derivatives, which are recyclable and offer superior thermal stability, mechanical properties, and barrier performance, allowing for the creation of a compostable and recyclable packaging solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If traditional materials (glass, plastic, aluminum) are used for beverage containers, then durability and barrier properties are achieved, but energy consumption increases and environmental friendliness deteriorates
Solution Approach 1:
The patent changes the material composition parameters by using furan-based polyesters with specific molecular structures (2,5-furandicarboxylate units) to achieve optimal balance between energy efficiency and container performance. The furan resin provides adequate mechanical properties and barrier performance while requiring significantly less energy for production compared to traditional materials.
Solution Approach 2:
The invention uses composite material systems combining furan-based polyesters with aluminum components (cap, rim, release mechanism) to create a hybrid container structure that leverages the low-energy production advantage of furan resins while maintaining the proven recyclability and structural integrity of aluminum through bonding interfaces.
2Object-generated harmful factors
If bioplastics are used as sustainable alternative, then environmental friendliness improves, but recyclability and effective recycling methods deteriorate
Solution Approach 1:
The patent modifies the chemical structure parameters of bioplastics by incorporating furan rings (2,5-furandicarboxylate units) which provide thermal stability and structural rigidity, enabling the material to withstand recycling processing temperatures while maintaining biodegradability and compostability characteristics.
Solution Approach 2:
The furan-based polyester material achieves multiple functions simultaneously: it provides sustainable environmental benefits through plant-based derivation and compostability, while also enabling recyclability through its thermal stability and compatibility with existing aluminum can recycling infrastructure, allowing the container to be recycled 'as is' without special processing.
3Object-generated harmful factors
If aluminum is used for cans, then recyclability is maintained, but production energy requirement increases to 2000 degrees F. melting temperature
Solution Approach 1:
The patent changes the thermal processing parameters by replacing aluminum with furan-based polyesters that can be processed and recycled at much lower temperatures (300 degrees vs. 2000 degrees F.), significantly reducing the energy input and carbon footprint associated with the recycling process while maintaining material recyclability.
4Use of energy by stationary object
If furan-based resin is used, then energy efficiency and environmental sustainability improve, but material availability and manufacturing infrastructure deteriorate
Solution Approach 1:
The furan-based polyester material is designed to be compatible with existing manufacturing infrastructure for aluminum can production, including injection molding equipment and bonding processes. The material can be manufactured using current industrial capabilities while providing superior energy efficiency, and the container can be recycled through existing aluminum can recycling streams.
Data Source
AI summary
A furan can for containing a product includes a sealed container that contains the product and includes a furan resin selected from the group consisting of: poly (ethylene 2,5-furan dicarboxylate) (PEF), poly (butylene 2,5-furan dicarboxylate) (PBF), poly (trim ethylene furan dicarboxylate) (PTF), poly (propylene 2,5-furandicarboxylate) (PPF), and poly (neopentyl 2,5-furandicarboxylate) (PNF); and a release mechanism to open the container and access the product. The can may further include a generally cylindrical shell molded to have a sealed bottom and a straight wall that includes the furan resin; and a cap to seal the shell, the cap having the release mechanism and a rim that includes the furan resin; wherein the rim of the cap is bonded to the wall of the shell to releasably seal the product inside the can.