Bioplastic Thread Paper Machine Belts for Resource Conservation
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Solution Overview
Problem
Paper machine belts made from fossil-based plastics have limited mechanical properties and a short lifespan, leading to excessive resource consumption and environmental impact, as they need frequent replacement due to unfavorable conditions in paper machines, and the depletion of petrochemical raw materials necessitates the conservation of fossil resources.
Innovation Solution
Development of paper machine belts with a thread system using partially or entirely bioplastic threads made from renewable vegetable materials, such as starch, cellulose, polylactic acid, and bio-based polyamides, which are non-biodegradable and easier to recycle, replacing traditional petrochemical plastics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paper machine belts are made from fossil-based plastics, then mechanical properties and durability are improved, but resource depletion and environmental impact worsen
Solution Approach 1:
The patent changes the material parameter from fossil-based plastics to bioplastics derived from renewable resources. This substitution maintains the mechanical properties and durability required for paper machine belt operation while fundamentally altering the resource base from non-renewable fossil fuels to renewable biological materials, thereby resolving the contradiction between reliability and resource depletion
Solution Approach 2:
The patent employs composite material structures where bioplastics are integrated into the thread system of the paper machine belt. These bioplastic-based composite materials combine the functional requirements of durability and mechanical strength with sustainable resource origins, allowing the belt to maintain reliability while reducing fossil resource consumption
2Object-affected harmful factors
If paper machine belts are made from biodegradable materials, then environmental friendliness is improved, but mechanical stability and lifespan worsen
Solution Approach 1:
The patent applies local quality by making the bioplastic material non-biodegradable specifically in the context of paper machine belt application. The bioplastic threads are engineered to resist degradation under the harsh conditions of paper machine operation (heat, moisture, mechanical stress), thereby maintaining mechanical stability and reliability while still being derived from renewable resources and easier to recycle
Solution Approach 2:
The patent inverts the conventional approach by using non-biodegradable bioplastics instead of biodegradable materials. This inversion resolves the contradiction by demonstrating that renewable resource-based materials do not necessarily need to be biodegradable to be environmentally friendly - they can instead be designed for durability and recyclability, thereby maintaining mechanical stability while improving environmental sustainability
3Loss of substance
If paper machine belts are made from renewable bioplastics, then resource sustainability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by focusing the bioplastic implementation specifically on the thread system component of the paper machine belt, rather than attempting to bioplasticize the entire belt structure. This segmented approach allows manufacturers to integrate bioplastics into existing production workflows for thread fabrication while maintaining conventional manufacturing processes for other belt components, thereby reducing overall manufacturing complexity
Solution Approach 2:
The patent leverages the multi-functionality of bioplastics which can serve both as structural threads and as functional components in the belt system. The bioplastic threads perform multiple roles including providing mechanical strength, enabling flexibility, and offering sustainability benefits, thereby simplifying the overall material selection process and reducing manufacturing complexity despite the novelty of the material
Data Source
AI summary
Paper machine belt comprises fibers, where a part of fibers or complete fibers are partially or completely made of a bio-plastic.