Bi-component Filament Adhesion via Acid Anhydride Binding Agent
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Solution Overview
Problem
Bi-component continuous filaments and articles made from them often undergo delamination due to separation of polymer components, especially under high wear and tear, affecting their integrity and durability.
Innovation Solution
A bi-component continuous filament is developed with a binding agent, such as polyolefin modified by an acid anhydride, adhering the first polymer component forming a sheath to the second polymer component forming a core, maintaining a generally uniform cross-sectional shape and enhancing adhesion between the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bi-component continuous filaments are made with two different polymer components (sheath and core), then the filaments can be used for thermal bonding and creating diverse textile products, but the polymer components separate over time causing delamination and reducing durability
Solution Approach 1:
A binding agent comprising polyolefin modified by acid anhydride is introduced as an intermediary substance between the sheath and core polymer components. This binding agent chemically or physically adheres the two polymer components to each other, preventing separation and delamination while allowing the bi-component filament to maintain its functional versatility for thermal bonding and textile applications
2Strength
If high levels of wear and tear are applied to articles made from bi-component continuous filaments, then the articles undergo delamination and degradation, but increased durability is needed for long-term use
Solution Approach 1:
The filament structure is designed as a composite material system consisting of two different polymer components (sheath and core) held together by a binding agent. This composite structure combines the desirable properties of different polymers while the binding agent ensures structural integrity and resistance to delamination under wear and tear, enhancing overall durability
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
The solution significantly improves the tenacity and resistance to delamination of the filaments, resulting in more durable and resilient products suitable for various textile applications, including floor coverings.
Implementation Method 1
a binding agent adhering the first polymer component to the second polymer component along a length of the filament
Data Source
AI summary
A bi-component continuous filament has a sheath-core arrangement including a first polymer component forming a sheath and including a polyamide, a polyolefin, or a polyester; a second polymer component forming a core and including a polyamide, a polyolefin, or a polyester; and a binding agent adhering the first polymer component to the second polymer component along a length of the filament such that the filament has a generally uniform cross-sectional shape along the length. The binding agent preferably includes a polyolefin modified by an acid anhydride. Articles made from such bi-component continuous filaments include, for example, bulk continuous filament (BCF) fibers and floor coverings, such as mats, rugs, and carpets.