Methods for producing polymer fibers and polymer fiber products from multicomponent fibers
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Solution Overview
Problem
Current methods for manufacturing polymer fibers and products from multicomponent fibers face challenges such as low yield, high manufacturing costs, significant waste production, and limitations in material types due to inadequate dissolution and poor selectivity, leading to inefficient processing and environmental impact.
Innovation Solution
A method involving selective dissolution of sacrificial polymers from multicomponent fibers using solvents, allowing for the recovery and recycling of both the sacrificial polymer and solvent, which are then reused, thereby improving the quality and diversity of materials and reducing waste and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to manufacture polymer fibers from multicomponent fibers, then production can proceed with existing technology, but the yield is low and manufacturing cost is high
Solution Approach 1:
The patent changes the chemical parameters by selecting specific solvents that selectively dissolve the sacrificial polymer component while leaving the target polymer intact. This parameter change enables high-yield recovery of both the target polymer fibers and the sacrificial polymer, directly resolving the low yield and high cost contradiction
Solution Approach 2:
Instead of discarding the sacrificial polymer component as waste, the patent recovers it through selective dissolution and precipitation processes. The recovered sacrificial polymer can be reused in subsequent fiber production, significantly improving yield and reducing manufacturing costs
2Ease of manufacture
If conventional dissolution methods are used, then processing can continue, but significant amounts of waste are produced
Solution Approach 1:
The patent implements a recovery system where the sacrificial polymer is dissolved, separated, precipitated, and recovered for reuse. This eliminates waste production while maintaining processing efficiency, as the recovered polymer can be fed back into the fiber production process
Solution Approach 2:
The system is designed to be self-sufficient by recovering and reusing the sacrificial polymer within the same production process. The waste stream becomes a resource that feeds back into the system, reducing external material inputs and waste disposal requirements
3Productivity
If conventional dissolution methods are used, then processing can proceed, but dissolution is inadequate or slow and selectivity is poor
Solution Approach 1:
The patent carefully selects solvents based on their chemical parameters to achieve both rapid dissolution of the sacrificial polymer and high selectivity. By matching solvent properties to the specific polymer composition, the process achieves fast dissolution rates while maintaining excellent selectivity between different polymer components
Solution Approach 2:
The solvent acts as an intermediary that selectively interacts with the sacrificial polymer component. This intermediary enables controlled dissolution and separation, achieving both high dissolution rates and excellent selectivity by mediating the interaction between solvent and polymer components
4Adaptability or versatility
If conventional methods are used, then existing materials can be processed, but the types of materials that can be produced are limited
Solution Approach 1:
The patent develops a universal solvent-based separation platform that can process multiple types of multicomponent fiber compositions. By selecting appropriate solvents for different polymer systems, the same basic process methodology can produce diverse fiber types including polyolefin, polyester, polyamide, and other polymers, greatly expanding material versatility while maintaining high quality standards
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 enhances the quality of polymer fibers and products, reduces waste and environmental impact, and lowers production costs by enabling the use of a wider range of materials and improving the efficiency of the polymer recycling process.
Implementation Method 1
exposing the multicomponent fiber to at least one swelling agent or at least one solvent operable to selectively dissolve the at least one sacrificial polymer
Implementation Method 2
separating the at least one dissolved sacrificial polymer from the at least one swelling agent or the at least one solvent
Implementation Method 3
recovering greater than about 90% of the at least one swelling agent or the at least one solvent
Data Source
AI summary
The present invention relates to methods of producing polymer fibers and polymer fiber products and materials recovery from these processes. It is an object of this invention to produce polymer fibers and products that include these fibers using selective dissolution of multicomponent fiber and to recover the dissolved polymer and solvent for subsequent use.