Rotational Spinning Multi-Component Fibers
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Solution Overview
Problem
Existing methods for producing multi-component fibers require high temperatures, making it difficult to process heat-sensitive fiber raw materials like medicinal drugs, fungicides, and bactericides without damaging them.
Innovation Solution
A rotational spinning method where two containers are rotated around the same axis, allowing fiber raw materials to be combined without exposure to high heat, enabling the production of multi-component fibers from temperature-sensitive materials, including biodegradable substances and biopolymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If classic spinning methods using melts are used to produce multi-component fibers, then the manufacturing process is simple and well-established, but heat-sensitive fiber raw materials cannot be processed without being damaged
Solution Approach 1:
The invention changes the temperature parameter from high (melt spinning) to low (solution spinning), enabling processing of heat-sensitive materials. The patent specifies that spinning solutions are used instead of melts, allowing fiber raw materials to be processed at temperatures that do not cause damage to thermally sensitive components like medicinal drugs and biopolymers
Solution Approach 2:
The invention replaces the thermal field (heat-based melt spinning) with a chemical solution-based system. Instead of heating materials to melting point and spinning the melt, the patent uses dissolution of fiber raw materials in solvents to create spinning solutions that can be extruded at low temperatures, thus substituting thermal processing with chemical processing
2Object-affected harmful factors
If rotational spinning method is used to process heat-sensitive materials, then the fiber raw materials are not damaged, but the process complexity increases with multiple rotating containers
Solution Approach 1:
The invention merges multiple functions into a single rotating container system. The container serves both as the spinning device and as the source for multiple fiber components. Different fiber raw materials are introduced into the rotating container through separate feed systems, and the rotation enables simultaneous extrusion of multiple components through different nozzle arrangements, combining mixing, spinning, and component integration in one device
Solution Approach 2:
The rotating container is designed with multi-functionality to handle various fiber raw materials and produce different fiber types. The same basic device structure can process different materials by changing the spinning solution composition and nozzle configuration, making the complex device adaptable to multiple applications including bi-component fibers, hollow fibers, and fibers with active ingredients
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 allows for the production of multi-component fibers that are heat-sensitive, biodegradable, and can incorporate medicinal drugs or active ingredients, suitable for wound dressings, cosmetics, and tissue engineering, without damaging the raw materials, and can form cohesive bonds to create core-shell or side-by-side fibers.
Implementation Method 1
a first fiber raw material is discharged from a first rotating container through nozzles. A second fiber raw material is applied from the outside onto the discharged first fiber raw material in that the second molten, mineral fiber raw material is centrifuged onto the outer wall of the first rotating container
Data Source
AI summary
A multi-component fiber includes a first component made of a first fiber raw material and a second component made of a second fiber raw material. The first and second components are combined by rotational spinning so as to form a fiber body.