Polyester Seat Upholstery Structure for Moisture Wicking and Recycling
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Solution Overview
Problem
Polyurethane foam used in vehicle seat upholstery retains moisture, causing discomfort and contributes to global warming, and is not recyclable, leading to environmental issues upon disposal.
Innovation Solution
A vehicle seat upholstery made entirely of recyclable polyester fibers, comprising a 3D tangle of continuous polyester fibers, a non-woven polyester layer, and a woven or knitted polyester layer, with a reduced CO2 emission rate, and a method for manufacturing and recycling this upholstery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If polyurethane foam is used for seat padding, then comfort and ease of manufacture are improved, but moisture retention causes discomfort and CO2 emissions increase
Solution Approach 1:
The patent changes the material parameter from polyurethane foam to polyester fiber layers, fundamentally altering the moisture management properties while maintaining manufacturing feasibility through established textile and foam layering processes
Solution Approach 2:
The invention uses a composite structure with multiple polyester layers (non-woven, woven, knitted) combined with foam elements, creating a material system that provides both comfort and moisture wicking properties without the harmful moisture retention of traditional polyurethane foam
2Ease of operation
If polyurethane foam is used for seat padding, then comfort is improved, but CO2 emissions increase due to chemical reaction
Solution Approach 1:
The patent changes the chemical composition parameter from polyurethane (which emits CO2 during formation) to polyester materials, eliminating the harmful CO2 emissions while preserving the comfort properties through appropriate fiber selection and layer configuration
Solution Approach 2:
The invention adopts polyester materials that can be produced without CO2-emitting chemical reactions, treating the upholstery as a replaceable component with reduced environmental impact throughout its lifecycle
3Ease of manufacture
If polyurethane foam is used for seat padding, then manufacturing simplicity is improved, but recyclability is lost
Solution Approach 1:
The patent divides the upholstery into separate removable layers (cover, foam layer, polyester layers), enabling easy disassembly and recycling of individual components without requiring complete dismantling of the seat structure
Solution Approach 2:
The invention designs the upholstery with recyclable polyester materials that can be recovered and reused at end-of-life, replacing the non-recyclable polyurethane foam while maintaining manufacturing simplicity through modular construction
4Object-generated harmful factors
If polyester fiber layers are used instead of polyurethane foam, then recyclability and reduced CO2 emissions are improved, but moisture retention may worsen
Solution Approach 1:
The patent creates a composite structure combining different polyester layers (non-woven, woven, knitted) with varying properties, where the combination provides moisture wicking capabilities that overcome the potential moisture retention issue of individual polyester layers
Solution Approach 2:
The invention assigns different local qualities to different layers - the non-woven layer provides moisture absorption, the woven layer provides structure, and the knitted layer provides flexibility, creating a synergistic system that manages moisture effectively
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 solution provides a comfortable, low-emission, and recyclable upholstery that maintains appearance and performance, with a method for easy disassembly and recycling, reducing environmental impact.
Implementation Method 1
the continuous fibres forming loops welded together to a second layer comprising non-woven polyester fibres... the upholstery has a reduced tendency to retain moisture
Implementation Method 2
Extrusion of a thermoplastic polymer in an extrusion die comprising extrusion nozzles distributed along a lengthwise direction and along a widthwise direction of the extrusion die, generating a curtain of continuous molten fibres, falling by gravity
Implementation Method 3
Reception of the curtain of continuous molten fibres falling by gravity on one or more support elements with generation of a 3D entanglement of irregularly arranged fibres with fusion of loops between the continuous fibres
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a filling 3 comprising: - A first padding layer 31 comprising a 3D tangle of continuous polyester fibers arranged irregularly forming loops welded together, - A cover 32 comprising: • A second layer 33 comprising non-woven polyester fibers, • A third appearance layer 34 comprising polyester fibers woven together, each of the first and second layers comprising at least 95% polyester, the third layer comprising at least 92% polyester.