Touch Spinning Apparatus for Scalable Nanofiber Production
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Solution Overview
Problem
The electrospinning process for producing nanofibers is heavily dependent on the dielectric properties of materials, limiting its effectiveness and scalability, as it requires high-voltage electrical fields, which is not universally applicable.
Innovation Solution
The development of a touch spinning apparatus and method that uses a rotating plate with a post to draw nanofiber-forming materials into fibers, independent of dielectric properties, allowing for the creation of multi-layer core-sheath yarns with controlled fiber alignment, spacing, and blending, using polymers and other materials in their melt or solution states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electrospinning process is used to produce nanofibers, then nanofibers can be formed using high-voltage electrical field, but the process is limited by dielectric properties of materials and requires high-voltage equipment
Solution Approach 1:
The patent replaces the electrical field-based electrospinning system with a mechanical touch spinning system. A rotating plate with a post contacts the nanofiber-forming material and mechanically draws it into fibers through rotational motion, eliminating the need for high-voltage electrical fields and dielectric property dependencies.
Solution Approach 2:
The invention changes the fundamental operating parameter from electrical voltage to mechanical rotation speed. By controlling the rotational speed of the plate and post, the system can produce nanofibers from materials regardless of their dielectric properties, significantly expanding material adaptability.
2Productivity
If electrospinning is used, then nanofibers can be produced, but the process lacks scalability and requires complex high-voltage equipment
Solution Approach 1:
The patent replaces complex high-voltage electrical equipment with a simple mechanical rotating plate system. The touch spinning apparatus uses basic mechanical components (rotating plate, post, and motor) to achieve nanofiber production, significantly reducing device complexity while improving scalability.
Solution Approach 2:
The rotating plate system can process multiple types of nanofiber-forming materials (polymers, blends, composites) using the same mechanical mechanism, making the device universally applicable and highly scalable for different material systems and production volumes.
3Manufacturing precision
If traditional electrospinning is used, then single-layer nanofibers can be produced, but creating multi-layer core-sheath structures is difficult
Solution Approach 1:
The patent divides the nanofiber production into separate functional zones: a core yarn that passes through the rotating plate aperture and a sheath-forming material that contacts the rotating post. This segmentation allows independent control and precise formation of multi-layer core-sheath structures with controlled fiber alignment and spacing.
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 approach enables the production of scalable, cost-effective nanofibrous materials with tunable properties, suitable for various applications such as functional textiles, electroconductive materials, sensors, and tissue engineering, without relying on dielectric properties, offering flexibility in fiber composition and structure.
Implementation Method 1
The rotating plate can rotate to draw a fiber of nanofiber-forming material from the post, so that the fiber wraps around the core yarn
Data Source
AI summary
Nanofiber spinning apparatuses and methods for making core-sheath materials using touch spinning are provided. The apparatus includes at least one rotating plate with an aperture through which a core yarn passes and at least one post contacting the rotating plate. A speed control device can be configured to control rotation of the rotating plate, and a dispensing device can be configured to dispense a nanofiber-forming material onto the post. To make a core-sheath yarn a core yarn is passed through an aperture in a rotating plate having at least one post. The post is contacted with a nanofiber-forming material the rotating plate is rotated to draw a fiber of nanofiber-forming material from the post to wrap the fiber around the core yarn.