Electrostatic Ultrafine Fiber Printing System for Nanoscale Fabrication
Solution Overview
Problem
Conventional 3D plastic fiber printers produce fibers that are not fine enough to form nanofibers, making them unsuitable for creating fabrics or filters, despite adjustments in plastic materials and heating temperatures, which are insufficient for producing nano-scale wires.
Innovation Solution
An ultrafine fiber printing system with a main printing unit, a moving deck, a static electricity supply, and a fiber carrier, where the nozzle and fiber carrier are connected to form an electric field, allowing melted plastic droplets to be stretched into nano-scale fibers, which are collected on a rotatable cylinder or other shaped carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional feed screws and heating tubes are used to extrude plastic, then plastic wires can be produced, but the fiber diameter is too large (0.5-1.0 mm) to form nanofibers
Solution Approach 1:
The patent replaces the conventional mechanical extrusion system (feed screw and heating tube) with an electrostatic-based system. A high-voltage electrode creates an electric field that draws melted plastic through capillary nozzles, eliminating the need for mechanical feeding and enabling precise control of fiber diameter at the nanoscale level.
Solution Approach 2:
The patent changes the fundamental operating parameters from mechanical pressure and temperature control to high-voltage electrostatic field control. By adjusting voltage, electric field strength, and nozzle geometry, the system achieves precise control over fiber diameter, producing nanofibers instead of conventional thick wires.
2Manufacturing precision
If heating temperature and pore diameter are adjusted to reduce fiber size, then smaller fibers can be produced, but the fibers are still not fine enough for fabric or filter applications
Solution Approach 1:
The patent replaces thermal-mechanical extrusion with electrostatic field-driven flow. The high-voltage electrode creates strong electric field forces that pull melted plastic through extremely fine capillary nozzles, achieving nanoscale fiber diameters without relying solely on thermal expansion and mechanical pressure.
Solution Approach 2:
The patent introduces a high-voltage electrode as an intermediary that creates an electric field between the nozzle and collector. This electric field acts as a mediator to control the flow and stretching of plastic droplets, enabling precise control of fiber fineness that cannot be achieved by temperature and nozzle diameter alone.
3Adaptability or versatility
If conventional extrusion methods are used, then plastic wires can be produced continuously, but the wires are not suitable for making fabrics or filters
Solution Approach 1:
The patent replaces mechanical extrusion with electrostatic field-driven droplet formation and stretching. This substitution enables continuous production of ultrafine nanofibers with controlled morphology, making the output suitable for fabric and filter applications where conventional extrusion produces only thick wires.
Solution Approach 2:
The patent fundamentally changes the production parameters from millimeter-scale extrusion to micrometer and nanometer-scale electrostatic drawing. By controlling voltage, electric field strength, and collection speed, the system produces fibers with diameters suitable for textiles and filtration, expanding application versatility.
4Manufacturing precision
If an electric field is formed between nozzle and fiber carrier, then droplets can be stretched into nano-scale fibers, but additional equipment (static electricity supply) is required
Solution Approach 1:
The patent introduces a high-voltage electrode as an intermediary that creates an electric field between the nozzle and collector. This electric field acts as a mediator to control the flow and stretching of plastic droplets, enabling precise control of fiber fineness that cannot be achieved by temperature and nozzle diameter alone.
Solution Approach 2:
The patent replaces the conventional mechanical extrusion system (feed screw and heating tube) with an electrostatic-based system. A high-voltage electrode creates an electric field that draws melted plastic through capillary nozzles, eliminating the need for mechanical feeding and enabling precise control of fiber diameter at the nanoscale level.
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
Enables the production of soft, shape-customizable fabric membranes with controlled thickness and programmable shapes, suitable for various applications including medical use and specialized filters, by forming and collecting ultrafine fibers in an electric field.
Implementation Method 1
the plastic filaments continuously delivered to the pipe can be melted into liquid plastic
Implementation Method 2
Each of the at least one pipe is sheathed in a heat dissipating unit and a heater
Implementation Method 3
an electric field is formed between the nozzle and the fiber carrier. When these droplets of the liquid plastic enter the electric field, the droplets will be accelerated and drifted toward the fiber carrier, so that the droplets will be stretched to form nano-scale ultrafine fibers
Data Source
AI summary
An ultrafine fiber printing system contains a moving deck having a nozzle seat that is disposed on the moving deck. A pipe is installed in the nozzle seat, and a nozzle is disposed at the bottom end of the pipe. The upper portion and the lower portion of the pipe are combined with a heat dissipating unit and a heater respectively. The top end of the pipe is connected to a feed tube having an outer end connected with a thread squeezer. A printing platform is disposed around the moving deck. The nozzle is connected to a static electricity supply, and the fiber carrier is grounded. An electric field is formed between the nozzle and the fiber carrier. The droplets exported from the nozzle are stretched into ultrafine fibers to form a patterned fabric or product.