Co-extruding Polymer and Fiber Filaments for Composite Components
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Solution Overview
Problem
Current methods for manufacturing fiber-reinforced polymeric components, such as fused filament fabrication, lack the ability to effectively integrate reinforcing fibers into polymer components, limiting the strength and weight reduction potential of the final products.
Innovation Solution
A system that co-extrudes polymer and fiber filaments from a nozzle, where the polymer filament is heated to encapsulate or adhere the fiber filament, creating a composite filament that can be deposited layer by layer to form components with enhanced strength and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional fused filament fabrication is used to manufacture polymeric components, then the manufacturing process is simple and easy to operate, but the components lack reinforcing fibers and have limited strength
Solution Approach 1:
The patent combines polymer filament feeding and fiber filament feeding into a single integrated system with dual feed reels, synchronized feeding mechanisms, and a unified control system. The heating element simultaneously processes both filaments, and the single nozzle co-extrudes the composite material, merging multiple functions into one device to improve strength without proportionally increasing complexity
Solution Approach 2:
The invention creates composite filaments by co-extruding polymer and fiber materials through a single nozzle. The heated polymer matrix encapsulates reinforcing fibers (such as carbon, glass, or aramid), forming a composite filament that is then deposited layer by layer. This composite structure directly addresses the strength limitation while maintaining the additive manufacturing process
2Weight of moving object
If fiber filaments are not integrated into polymer components, then the manufacturing process is simple, but the components cannot achieve weight reduction potential
Solution Approach 1:
The system merges polymer filament feeding and fiber filament feeding into a single integrated extrusion process. Dual feed reels are synchronized to deliver both materials simultaneously, and a single heating element processes both filaments together before they are co-extruded through one nozzle. This integration maintains manufacturing simplicity while enabling weight reduction through fiber reinforcement
Solution Approach 2:
The patent controls the heating temperature parameter to melt the polymer filament while maintaining the structural integrity of the fiber filament. By carefully managing the thermal parameters, the polymer becomes sufficiently viscous to encapsulate the fibers, creating a composite filament that can be deposited layer by layer. This parameter control enables weight reduction without complicating the manufacturing process
3Strength
If polymer and fiber filaments are co-extruded from a nozzle, then components with enhanced strength and reduced weight are produced, but the manufacturing system becomes more complex
Solution Approach 1:
The patent combines multiple feed reels, synchronized feeding mechanisms, and a unified heating and extrusion system into a single integrated device. The control system coordinates both filaments simultaneously, and the single nozzle co-extrudes the composite material, merging multiple functions into one device to minimize the increase in complexity while achieving enhanced strength
Solution Approach 2:
The heating element serves multiple functions: it heats the polymer filament to a viscous state, maintains the structural integrity of the fiber filament, and facilitates the bonding between polymer and fiber. The single nozzle performs both polymer extrusion and fiber incorporation simultaneously. This multi-functionality reduces the need for separate components, offsetting the added complexity of handling multiple filaments
4Weight of moving object
If fiber filaments are integrated into polymer matrix through heating, then lightweight components with increased strength are produced, but energy is consumed for heating and coupling
Solution Approach 1:
The patent optimizes the heating temperature parameter to the minimum level required to melt the polymer filament and enable fiber encapsulation. By carefully controlling the thermal parameters and heating duration, the process achieves effective fiber-polymer coupling with reduced energy consumption, producing lightweight composite components efficiently
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 method enables the production of lightweight components with increased strength, capable of replacing heavier materials like steel or aluminum, particularly effective in high-temperature applications, by integrating reinforcing fibers into the polymer matrix.
Implementation Method 1
The plastic filament may be heated past its glass transition temperature and then deposited by a nozzle
Implementation Method 2
The polymer filament and the fiber filament may be heated. The heating may couple the polymer filament to the fiber filament
Data Source
AI summary
Components may be manufactured by co-extruding a polymer filament and a fiber filament from a nozzle. The polymer filament and the fiber filament may be heated within the nozzle, which may couple the polymer filament to the fiber filament. The co-extruded filament may result in long reinforcing fibers which provide strength to the components.