Recycled Carpet Waste Composite Manufacturing
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Solution Overview
Problem
The high cost and environmental impact of producing plastic composites using virgin thermoplastics, coupled with the large volume of unrecycled carpet waste, necessitate the development of a cost-effective and environmentally friendly method to utilize recycled carpet waste as a component in composite materials.
Innovation Solution
A composite material is created by processing carpet waste with a binding agent and natural fibers, applying heat and pressure to form a plastic composite with properties equivalent to those made with virgin plastics, utilizing up to 95% recycled carpet waste and incorporating additives like colorants and fire retardants, while maintaining low water absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If virgin thermoplastics are used to produce plastic composites, then the physical properties and structural integrity are improved, but the production cost increases and environmental impact worsens
Solution Approach 1:
The patent changes the material composition parameters by incorporating 20-95% recycled carpet waste and natural fibers instead of using 100% virgin thermoplastics. This parameter change maintains adequate structural integrity while significantly reducing production costs and environmental impact.
Solution Approach 2:
The patent creates a composite material system combining recycled carpet waste, natural fibers (wood chips, flax, jute, hemp, kenaf, abaca), and binding agents. This composite approach allows the use of lower-cost recycled materials while achieving required physical properties through the synergistic combination of multiple materials.
2Strength
If virgin thermoplastics are used to produce plastic composites, then the structural integrity is improved, but the environmental impact worsens due to manufacturing more virgin plastics
Solution Approach 1:
The patent changes the material source parameters by using 20-95% recycled carpet waste and natural fibers instead of virgin thermoplastics. This reduces dependency on petroleum-based materials and decreases the environmental harm associated with manufacturing new plastics.
Solution Approach 2:
The patent recovers and reuses carpet waste that would otherwise be discarded through land-filling or burning. By incorporating 20-95% recycled carpet waste into composite materials, the patent transforms waste streams into valuable resources, reducing environmental impact while maintaining product performance.
3Ease of manufacture
If recycled carpet waste is used as a component in composite materials, then the production cost is reduced and environmental impact is improved, but the physical properties and structural integrity may deteriorate
Solution Approach 1:
The patent creates a composite system combining recycled carpet waste with natural fibers and binding agents. This composite structure compensates for the lower strength of recycled materials by distributing mechanical loads across multiple material phases, achieving required structural integrity while using cost-effective recycled content.
Solution Approach 2:
The patent applies different materials to different functional requirements within the composite. Recycled carpet waste provides bulk and basic structure, natural fibers enhance structural integrity and stiffness, and binding agents ensure proper bonding. This local optimization of material properties achieves overall structural integrity despite using recycled materials.
4Ease of manufacture
If carpet waste is land-filled or burned for disposal, then the waste management is simplified, but the environmental harm and cost concerns worsen
Solution Approach 1:
The patent converts the harmful waste disposal problem into a beneficial resource. Instead of land-filling or burning carpet waste (which causes environmental harm), the patent incorporates 20-95% recycled carpet waste into composite materials, transforming waste into a valuable resource for manufacturing building materials and other products.
Solution Approach 2:
The patent recovers carpet waste from land-fills or other waste streams and reuses it as a primary material component in composite products. This recovery process eliminates the need for harmful disposal methods while creating economic value from previously discarded 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 method reduces production costs and environmental impact by utilizing recycled materials, achieving equivalent physical properties to virgin plastic composites with reduced moisture absorption and enhanced structural integrity.
Implementation Method 1
processed carpet waste, between about 2% and about 10% binding agent by weight of the composite, and between about 20% and about 30% natural fibers by weight of the composite in intimate association
Implementation Method 2
applying heat and pressure to form a plastic composite
Implementation Method 3
applying heat and pressure to a processed carpet waste and a binding agent to form the composite material
Implementation Method 4
applying heat and pressure to form a plastic composite with properties equivalent to those made with virgin plastics
Data Source
AI summary
A composite material is produced from carpet waste and a binding agent, in intimate association, and may also include wood fiber or chips and/or other additives. A method of manufacturing a composite material includes shredding carpet waste, coating the carpet waste with a binding agent, and subjecting the shredded, coated carpet waste to elevated heat and pressure. As an additional step, the composite material may be actively cooled to prevent deformation of the material.