Moldable Mat Bonding Interface for Olefin Adhesion
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Solution Overview
Problem
The surface character of olefin tape elements and fibers in existing moldable mat structures reduces adhesion with substrate layers, such as adhesives, resins, foams, and plastics, necessitating a solution that enhances lamination while maintaining desirable moldable properties.
Innovation Solution
A unidirectional composite construction with embedded fiber elements anchored within a mat structure, forming a secure bondable surface that can securely bond with adhesive or non-adhesive substrate layers, achieved through the use of unidirectional fiber layers and interwoven axially drawn tape fiber elements with embedded fiber elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If olefin tape elements and fibers are used to form moldable mat structures, then the mat structures achieve desirable moldable properties and physical properties, but the surface character of the olefin materials reduces adhesion between the mat structure and substrate layers
Solution Approach 1:
A bonding interface layer is introduced between the olefin mat structure and the substrate. This intermediate layer has a surface character that is complementary to both the olefin mat and the substrate, facilitating adhesion while maintaining the moldable properties of the olefin structure. The bonding interface acts as a mediator that bridges the adhesion gap between the hydrophobic olefin material and the substrate.
Solution Approach 2:
The invention creates a composite construction consisting of multiple layers: the olefin mat structure, the bonding interface layer, and the substrate. This composite material system combines the moldable properties of the olefin with the adhesion capabilities of the bonding interface layer, achieving both requirements simultaneously through material composition rather than single-material reliance.
2Ease of manufacture
If the surface character of olefin materials is used, then the mat structures maintain their moldable properties, but adhesion to substrate layers such as adhesives, resins, foams, plastics, and rubbers is reduced
Solution Approach 1:
The bonding interface layer serves as a mediator that addresses the harmful effect of reduced adhesion without compromising the ease of manufacture through molding. It provides a surface that is chemically or physically compatible with both the olefin mat and the substrate, enabling strong adhesion while allowing the olefin to retain its moldable characteristics for easy manufacturing.
Solution Approach 2:
Instead of relying on mechanical adhesion through surface roughness or interlocking of the olefin surface, the invention substitutes for a chemical or physical bonding mechanism at the bonding interface layer. This replacement allows the olefin surface to remain smooth and moldable while the bonding interface provides the necessary adhesion through different mechanisms such as chemical bonding, van der Waals forces, or diffusion.
3Reliability
If embedded fiber elements are incorporated into the mat structure, then secure bonding surfaces are created, but the complexity of the composite construction increases
Solution Approach 1:
The bonding function is segmented from the structural mat material. The embedded fiber elements are separated as a distinct functional component within the bonding interface layer, rather than being integrated throughout the entire mat structure. This segmentation allows the bonding elements to be optimized independently while keeping the overall construction manageable in complexity.
Solution Approach 2:
The embedded fiber elements are placed locally at specific positions within the bonding interface layer where adhesion is most needed, rather than uniformly distributed throughout the entire mat structure. This localized placement provides secure bonding surfaces exactly where required while minimizing the overall complexity and material usage of the composite construction.
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 provides enhanced adhesion and secure bonding with substrates, maintaining the moldable properties of the mat structures and allowing for complex three-dimensional shaping without stress retention.
Implementation Method 1
the surface character of the olefin tape elements and olefin fibers tends to reduce adhesion between the formed mat structure and applied substrate layers
Implementation Method 2
Such drawn tape elements may be interwoven so as to form a mat structure which is then subjected to heat thereby fusing the tape elements in place
Data Source
AI summary
A composite construction comprising a mat structure comprising a plurality of layers, each layer comprising plurality of fibers, a multiplicity of embedded fiber elements extending in anchored relation at least partially across the thickness dimension of the mat structure such that at least a portion of the embedded fiber elements project outwardly from the mat structure and the projecting portions define at least a partial surface covering across a first side of the mat structure, and a substrate layer disposed in layered relation to the mat structure in contacting, bonding relation with said first side of the mat structure such that at least a percentage of said portion of embedded fiber elements projecting outwardly from the mat structure is at least partially bonded or embedded into a surface portion of the substrate layer. The composite is adapted for bonding to a substrate layer.