Multifilament Yarn Braid Structure for Stiffness and Deformation Resistance
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Solution Overview
Problem
Traditional multifilament yarn constructions are flexible and prone to deformation under bending, leading to damage and reduced performance in applications requiring stiffness and durability, such as medical sutures and cables.
Innovation Solution
A multifilament yarn construction comprising a core part and a braided sheath part, where the core filaments are arranged in a stable braid and the sheath filaments are braided onto the core with a high braiding angle and fill factor, resulting in a stiff and compact structure that maintains strength and stiffness even after repeated bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multifilament yarn constructions are made flexible for ease of operation, then they can be easily manipulated and installed, but they become prone to deformation under bending and suffer damage
Solution Approach 1:
The construction is divided into multiple independent multifilament yarns (typically 3-16 yarns) that are braided together. Each yarn can move independently within the braid structure, allowing flexibility for manipulation while the collective braid structure resists deformation under bending loads.
Solution Approach 2:
The invention combines multiple multifilament yarns into a composite braid structure. This composite construction integrates the flexibility of individual multifilament yarns with the structural stability of the braided configuration, achieving both ease of operation and resistance to deformation.
2Reliability
If the yarn construction is made stiffer to resist bending deformation, then it maintains strength and shape, but it becomes more difficult to manipulate and handle
Solution Approach 1:
The construction is divided into multiple independent multifilament yarns (typically 3-16 yarns) that are braided together. Each yarn can move independently within the braid structure, allowing flexibility for manipulation while the collective braid structure resists deformation under bending loads.
Solution Approach 2:
The braided structure allows dynamic movement of individual yarns within the braid during manipulation, making the construction flexible and easy to handle. Under bending loads, the braid structure dynamically distributes stresses across all yarns, maintaining structural integrity and resistance to deformation.
3Ease of operation
If multifilament yarns are used to achieve flexibility, then the construction can be easily manipulated, but it behaves plastically upon bending without elastic deformation
Solution Approach 1:
The construction is divided into multiple independent multifilament yarns (typically 3-16 yarns) that are braided together. Each yarn can move independently within the braid structure, allowing flexibility for manipulation while the collective braid structure resists deformation under bending loads.
Solution Approach 2:
The invention combines multiple multifilament yarns into a composite braid structure. This composite construction integrates the flexibility of individual multifilament yarns with the structural stability of the braided configuration, achieving both ease of operation and resistance to deformation.
Data Source
AI summary
Multifilament yarn constructions include a core part and a sheath part, the core part comprising a plurality of core filaments, and the sheath part comprising a plurality of sheath filaments. Furthermore, members comprising the multifilament yarn construction and uses of the multifilament yarn construction and the members are provided.