Electrospun Yarn Vortex Alignment and Bundling
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Solution Overview
Problem
Conventional electrospinning methods are limited in producing continuous aligned nanofibers that can be easily assembled into yarns, primarily resulting in non-woven mats, with little exploration of their inherent structure and properties for applications like filtration and biomedical uses.
Innovation Solution
A method and equipment involving a vortex containing device and a bundles collecting device to guide and collect electrospun fibers into a bundle of yarn, utilizing a fluid vortex to draw and wind fibers, allowing for the formation of woven products with preferred strength and structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional electrospinning method is used to produce nanofibers, then nanofibers can be formed as non-woven mats, but the fibers cannot be easily assembled into continuous yarns with aligned structure
Solution Approach 1:
The invention segments the fiber collection process into distinct functional zones: an electrospinning zone for fiber formation, a vortex-containing zone for fiber alignment and twisting, and a collection zone for yarn formation. This segmentation allows each zone to perform its specific function optimally, transforming random non-woven mats into aligned continuous yarns through controlled fiber deposition and twisting in the vortex zone
Solution Approach 2:
The vortex flow field acts as an intermediary mechanism between the electrospun fibers and the final yarn structure. The vortex containing device with its spiral flow pattern serves as a mediator that captures individual fibers, aligns them along the vortex trajectory, and twists them into bundled yarns, bridging the gap between random fiber deposition and organized yarn formation
2Adaptability or versatility
If non-woven mat structure is produced, then filtration application is enabled, but the mechanical strength and structural integrity are limited
Solution Approach 1:
The invention performs preliminary alignment and bundling of fibers during the electrospinning process itself, rather than attempting to assemble pre-formed non-woven mats. The vortex-containing device pre-organizes fibers into aligned bundles with controlled twisting before they are deposited as yarns, creating inherently stronger structures with improved mechanical integrity while maintaining filtration functionality
Solution Approach 2:
The invention creates a composite structure where individual nanofibers are bundled and twisted together to form yarns with enhanced mechanical properties. The spiral arrangement and twisting of fibers within the vortex zone creates a composite architecture that combines the filtration capabilities of nanofibers with the mechanical strength of bundled, aligned fiber structures
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 electrospun yarns with enhanced strength and structure, enabling their use as woven products with improved filtering and biomedical applications, and providing a direct electret effect without additional processing.
Implementation Method 1
The vortex generator is mounted in and communicates with the vortex containing device to form a fluid vortex in the vortex containing device
Implementation Method 2
The fluid vortex provides a guiding force. The guiding force draws an electrospun fiber into the feeding end of the vortex containing device. The electrospun fiber is wound to form a bundle of electrospun yarn by the fluid vortex
Implementation Method 3
The bundles collecting device is rotated to collect the bundle of electrospun yarn
Data Source
AI summary
An equipment of manufacturing a bundle of electrospun yarn has a vortex containing device and a bundles collecting device. The vortex containing device has a feeding end, an exporting end and a vortex generator. The vortex generator is mounted in and communicates with the vortex containing device to form a fluid vortex in the vortex containing device to provide a guiding force. The guiding force draws an electrospun fiber into the feeding end of the vortex containing device. The electrospun fiber is wound to form a bundle of electrospun yarn by the fluid vortex. The bundles collecting device is rotated to collect the bundle of electrospun yarn.