Electrostatic Spinning Apparatus Roller Feed Linear Electrode
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Solution Overview
Problem
The existing electrostatic spinning technology faces issues with the spinneret aperture being easily blocked and the need for machining rollers, which increases costs and reduces the applicability and diversity of electrostatic spinning solutions.
Innovation Solution
An electrostatic spinning apparatus using a feeding device with a tank, a roller, and linear and collecting electrodes, where the linear electrode is contacted with the roller to absorb and scatter the electrostatic spinning solution, forming fibers without the need for a spinneret, allowing for easy cleaning and increased surface area production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a spinneret with small aperture is used for electrostatic spinning, then fibers can be formed, but the aperture is easily blocked by residual solution
Solution Approach 1:
The patent removes the spinneret component entirely from the electrostatic spinning system. Instead of forcing solution through small apertures, the solution is applied to a roller surface and then transferred to a linear electrode, eliminating the blockage problem at its source.
Solution Approach 2:
The patent introduces a roller as an intermediary component between the solution reservoir and the linear electrode. The roller picks up solution from the tank and transfers it to the linear electrode surface, replacing the direct spinneret approach and preventing aperture blockage.
2Adaptability or versatility
If the roller surface is machined to form raised portions for electrostatic spinning, then fibers can be formed without a spinneret, but the cost of the apparatus is increased
Solution Approach 1:
The patent changes the operational parameters of a standard roller by rotating it at controlled speeds and adjusting its position relative to the linear electrode. This eliminates the need for expensive surface machining while achieving the same fiber formation function.
Solution Approach 2:
The patent uses a simple, inexpensive roller that can be easily replaced or adjusted, rather than investing in expensive machined components. The focus is on functional simplicity and ease of maintenance.
3Productivity
If a spinneret is used for electrostatic spinning, then fibers can be formed, but the spinneret and pipe need to be cleaned when changing solution
Solution Approach 1:
The patent removes the spinneret and associated piping from the system, replacing them with an open roller-based solution delivery mechanism. This eliminates the enclosed spaces where solution residue would accumulate and require cleaning.
Solution Approach 2:
The roller system allows for easy solution changes by simply replenishing the tank and adjusting the roller position or speed. The system is designed to be self-maintaining with no complex cleaning procedures required.
4Productivity
If a linear electrode with larger surface area is used, then the yield of electrostatic spinning fibers is increased, but the device complexity increases
Solution Approach 1:
The patent transitions from a point-like or small aperture spinneret to a linear electrode with extended surface area. This dimensional change allows multiple fibers to be formed simultaneously along the length of the electrode, increasing yield without requiring complex multi-component systems.
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 prevents spinneret blockages, simplifies the process of changing solutions, and increases the yield of electrostatic spinning fibers by using a linear electrode with a larger surface area, reducing costs and enhancing the production of high-porosity, large-surface-area fibers.
Implementation Method 1
The linear electrode is contacted with the roller to absorb the electrostatic spinning solution onto the linear electrode
Implementation Method 2
The high-voltage power supply is connected with the linear electrode and the collecting electrode to oppositely charge the linear electrode and the collecting electrode. The electrostatic spinning solution is led to the collecting electrode from linear electrode
Implementation Method 3
The principle of electrostatic spinning technology is to provide a driving force generated by an electric field between a positive electrode and a negative electrode, so as to overcome surface tension and viscosity of the polymeric electrostatic spinning solution
Implementation Method 4
fibers made by electrostatic spinning solution and spun from a spinneret repel each other because they are like-charged; when solvent evaporates, ultra-thin fibers can be formed
Implementation Method 5
when solvent evaporates, ultra-thin fibers can be formed
Data Source
AI summary
An electrostatic spinning apparatus includes a feeding device, at least one linear electrode, at least one collecting electrode, and a high-voltage power supply. The feeding device includes a tank and a roller and an electrostatic spinning solution is contained in the tank. The roller is rolled in the tank. The linear electrode is contact with the roller to absorb the electrostatic spinning solution onto the linear electrode. The collecting electrode is disposed equidistantly to the linear electrode. The high-voltage power supply is connected with the linear electrode and the collecting electrode to opposite charge the linear electrode and the collecting electrode. The electrostatic spinning solution is guided to the collecting electrode from linear electrode and formed an electrostatic spinning fiber.