Composite Material Edge Region Design for Complex Shaping
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Solution Overview
Problem
Existing composite materials with a core layer comprising flocking material in the form of individual fibers face challenges in forming complex shapes and require intricate adhesive application, limiting their flexibility and manufacturing efficiency.
Innovation Solution
A composite material design featuring a first cover sheet with a larger extension than the core layer, including a first edge region free from the core layer, and a second cover sheet with minimal extension beyond the core layer, allowing for easier shaping and adhesive application using a stationary coating head with precise adhesive control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the first cover sheet has a larger extension than the core layer with an edge region free from the core layer, then the ease of manufacture and forming of complex shapes is improved, but the structural uniformity deteriorates
Solution Approach 1:
The composite material is segmented into distinct functional zones: a core layer with flocking material for structural integrity, adhesive layers for bonding, and an edge region of the first cover sheet that extends beyond the core layer. This segmentation allows the edge region to be formed into complex shapes like drawer side walls while the core layer maintains structural uniformity and provides tensile strength.
2Manufacturing precision
If the second cover sheet extends minimally beyond the core layer, then the manufacturing precision and adhesive application control are improved, but the flexibility of the composite material deteriorates
Solution Approach 1:
The second cover sheet is designed with local quality differentiation: it extends minimally (no more than 5 mm) beyond the core layer at regions where precise adhesive application is required, while the first cover sheet extends significantly (at least 20 mm) at edge regions where flexibility and formability are needed. This local quality approach allows precise manufacturing where needed while maintaining flexibility where required.
3Ease of operation
If the first edge region extends at least 20 mm beyond the core layer, then the formability and ease of shaping are improved, but the weight of the composite material increases
Solution Approach 1:
The first edge region of the first cover sheet acts as a flexible shell that extends beyond the core layer, allowing the composite material to be formed into complex three-dimensional shapes like drawer side walls and building façade panels. This thin film extension provides the necessary formability without adding significant weight, as it utilizes the existing cover sheet material rather than adding bulky structural elements.
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 design enhances flexural rigidity and manufacturing ease, enabling the formation of complex shapes and products like drawer side walls and building façade panels with improved tensile and flexural strength while maintaining lightweight properties.
Implementation Method 1
The core layer comprises a first adhesive layer in contact with the first cover sheet, a second adhesive layer in contact with the second cover sheet
Implementation Method 2
a flocking material in the form of individual fibres which extend from the first adhesive layer to the second adhesive layer
Data Source
AI summary
A composite material is described. The composite material comprises a first cover sheet, a second cover sheet, and a core layer arranged between the first cover sheet and the second cover sheet, said core layer comprising a first adhesive layer in contact with the first cover sheet, a second adhesive layer in contact with the second cover sheet, and fibres which extend from the first adhesive layer to the second adhesive layer. The first cover sheet has a larger extension than the core layer and comprises at least a first edge region which is free from the core layer, wherein the first edge region extends from the outer edge of the first cover sheet to the core layer.