Natural-Fiber Composite Vehicle Panel With Integrated Fixing Points
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Solution Overview
Problem
The automotive industry faces challenges in reducing the ecological impact of interior components in vehicles, as existing solutions for composite panels made of natural fibers and polypropylene require integration with conventional non-biodegradable plastic materials for structural and fixing elements, limiting the reduction of CO2 emissions and end-of-life cycle impact.
Innovation Solution
A polyfunctional self-supporting panel structure composed of natural fiber and polypropylene panels, with a second panel featuring protuberances for connection to vehicle support components, eliminating the need for additional plastic materials by using heat-sealing and protuberances for anchoring, thus enabling all fixing and support functions without external plastic applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional plastic materials are used for fixing and support elements, then structural strength and reliability are ensured, but ecological impact and CO2 emissions increase
Solution Approach 1:
The patent changes the material parameters by using natural fibers (flax, hemp, sisal) combined with biodegradable thermoplastic polymers instead of conventional plastics. This material substitution maintains structural properties while reducing ecological impact and improving biodegradability at end of life
Solution Approach 2:
The patent creates composite panels by combining natural fibers with thermoplastic polymers in a matrix structure. This composite approach enables the material to achieve both the structural strength needed for automotive applications and the biodegradability required for reduced ecological impact
2Object-generated harmful factors
If natural fiber and polypropylene composite panels are used, then biodegradability and CO2 reduction are improved, but structural functionality and fixing capability deteriorate
Solution Approach 1:
The patent makes the NFPP panel universally functional by integrating multiple capabilities into a single component: the panel provides both decorative interior lining functions and structural fixing functions through integrated attachment elements, eliminating the need for separate plastic fixing components
Solution Approach 2:
The patent segments the panel into functional zones with different properties: areas with integrated attachment elements for fixing, areas with natural fiber reinforcement for structural strength, and smooth areas for aesthetic finish, allowing each zone to perform its specific function optimally
3Reliability
If integrated plastic fixing elements are added to NFPP panels, then structural reliability is improved, but plastic material usage and ecological impact increase
Solution Approach 1:
The patent merges the fixing elements directly into the NFPP panel structure during the molding process, creating an integrated single-component solution that eliminates separate plastic fixing parts and reduces total plastic material quantity while maintaining fixing reliability
4Adaptability or versatility
If conventional plastic accessories are integrated with NFPP panels, then functional completeness is improved, but biodegradability and end-of-life recyclability deteriorate
Solution Approach 1:
The patent creates a homogeneous material composition throughout the entire panel by using consistent NFPP material (natural fibers in thermoplastic matrix) for all functional elements including attachment points and reinforcement areas, ensuring uniform biodegradability and recyclability properties throughout the component
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
This solution significantly reduces plastic usage, maintains manufacturing efficiency, and enhances recyclability while minimizing CO2 emissions, achieving a radical reduction in plastic materials and associated environmental impact.
Implementation Method 1
This material is contingently heated to softening without reaching the liquefaction threshold, so that the thermoplastic matrix amalgams the natural fibres
Implementation Method 2
from this condition - with an appropriate thermal rise - it is allowed to cool and then pressed between cold moulds which impart the desired shape thereto
Data Source
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AI summary
The present invention relates to a polyfunctional self-supporting panel structure (30) for use in the passenger compartment of a motor vehicle, particularly for lining internal parts of the passenger compartment of a motor vehicle or for providing a frame for the upholstery of a motor vehicle or an accessory for the seats of a motor vehicle and the like. Such panel structure (30) comprises: at least one first panel (10), which is shaped and made of natural fibres and polypropylene and other synthetic thermoplastic fibres; in said at least one first panel (10) there being defined a first face (10a) and one second face (10b) juxtaposed to the first face (10a); and at least one second panel (20), which is shaped and made of natural fibres and polypropylene or other thermoplastic synthetic fibres; in said at least one second panel (20) there being defined a third face (20a) and a fourth face (20b) juxtaposed to the third face (20a); said at least one second panel (20) comprising at least one portion shaped so as to form, at the fourth face (20b), at least one protuberance (26, 27) carrying connection means (28, 29) so as to allow to connect, in use, said at least one second panel (20) to a support component of a motor vehicle; Furthermore, the at least one first panel (10) and the at least one second panel (20) are mutually joined at at least one respective peripheral area and/or at least one respective inner area so that the first face (10a) and the third face (20a) face each other, and that the second face (10b) is directed, in use, towards the internal of the passenger compartment of a motor vehicle, and that the fourth face (20b) faces said support component of the motor vehicle.