Bio-Based Carpet Backing Composition for Low-Emission Durability
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Solution Overview
Problem
Current carpet and carpet tile manufacturing relies heavily on fossil fuel-based materials, leading to environmental concerns such as greenhouse gas emissions, high energy consumption, and the presence of toxic compounds, which compromises sustainability and indoor air quality.
Innovation Solution
A carpet or carpet tile with a backing composition comprising a natural resin, such as rosin or its derivatives, a natural oil, optionally a thermoplastic elastomer, and a filler, where the binder is predominantly bio-based, reducing the need for fossil fuels and minimizing VOC emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fossil fuel-based backing materials (bitumen, PVC, polyolefins) are used, then the backing provides sufficient mechanical properties and durability, but environmental impact increases due to greenhouse gas emissions, toxic compounds, and non-renewable resource consumption
Solution Approach 1:
The patent changes the chemical composition parameters of the backing material by replacing fossil fuel-based polymers with bio-based alternatives. Specifically, it uses bio-based polyolefin resins (30-80 wt%), bio-based polyvinylidene fluoride resins (10-40 wt%), and bio-based fillers (20-60 wt%), thereby reducing environmental impact while maintaining mechanical properties through careful selection of bio-based materials with equivalent performance characteristics
Solution Approach 2:
The patent employs a composite material system combining multiple bio-based resin types (polyolefin and polyvinylidene fluoride) with bio-based fillers and optional glass fibers. This composite approach allows the formulation to achieve the necessary mechanical strength, flexibility, and durability through synergistic interactions between different bio-based components, replacing traditional fossil fuel-based single-material systems
2Object-affected harmful factors
If high amounts of filler are incorporated in the backing composition, then material cost and environmental impact are reduced, but the mechanical strength and cohesion of the backing deteriorate
Solution Approach 1:
The patent uses a composite resin system combining bio-based polyolefin and bio-based polyvinylidene fluoride resins in specific ratios (30-80 wt% and 10-40 wt% respectively). This composite resin matrix provides sufficient binding strength to hold together high amounts of bio-based fillers (20-60 wt%) while maintaining backing cohesion and mechanical properties, resolving the contradiction between filler content and strength
Solution Approach 2:
The patent optimizes the resin-to-filler ratio parameters within specific ranges: 30-80 wt% bio-based polyolefin resin, 10-40 wt% bio-based polyvinylidene fluoride resin, and 20-60 wt% bio-based filler. These parameter optimizations ensure that even with high filler content (up to 60 wt%), the backing maintains adequate strength through the balanced resin matrix composition
3Object-affected harmful factors
If bio-based materials are used in the backing composition, then sustainability and environmental friendliness are improved, but the available material options and performance consistency are limited
Solution Approach 1:
The patent creates a versatile bio-based composite system by combining two different types of bio-based resins (polyolefin and polyvinylidene fluoride) with multiple bio-based filler options. This composite approach expands material selection flexibility within the bio-based category, allowing optimization of specific properties (strength, flexibility, fire resistance) by adjusting the ratios and types of bio-based components while maintaining sustainability
Solution Approach 2:
The patent develops a universal backing composition formula that can accommodate various bio-based resin and filler combinations within specified ranges. The formulation is designed to be adaptable to different bio-based material sources and properties, providing a flexible framework that maintains performance consistency across different bio-based material variations while preserving environmental benefits
Data Source
AI summary
A carpet or carpet tile comprising a biobased backing is provided. The resultant carpet tile has advantages in terms of environmental issues and reduces the need for fossil fuels. The backing is made using a backing composition comprising a resin, an oil, optionally a thermoplasticelastomer, and a filler material.