Composite Transfer System for Precise Fiber Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for incorporating fiber reinforcements into sheet materials are prone to inaccuracies and distortion, failing to achieve precise alignment and permanent fixation, especially in applications requiring tensile force absorption like sail materials.
Innovation Solution
A transfer system comprising a composite material with a nonwoven carrier and a textile layer of reinforcing fibers, adhesively bonded together, protected by a removable cover foil, allowing for precise application and adaptation to various surfaces, utilizing thermoplastic properties for fixation and maintaining porosity for resin infusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fiber reinforcements are applied directly to sheet material during production by mechanically inserting fibers into adhesive bed, then the process is simple, but the alignment precision and fixation accuracy deteriorate
Solution Approach 1:
The fiber reinforcement system is segmented into two independent parts: a transfer carrier (nonwoven fabric) that maintains fiber alignment and a sheet material that receives the fibers. The fibers are first arranged precisely on the transfer carrier, then transferred as a unit to the sheet material, preserving alignment precision while simplifying the transfer process.
Solution Approach 2:
A transfer carrier (nonwoven fabric) is introduced as an intermediary between the fiber reinforcement and the sheet material. This intermediary allows fibers to be arranged with high precision on the carrier, then transferred as a complete unit to the adhesive bed on the sheet material, maintaining alignment accuracy without requiring complex direct placement mechanisms.
2Manufacturing precision
If a latticework of fiber layers is produced and adhesively bonded, then fiber alignment can be improved, but the adhesion between layers is limited and production becomes sophisticated
Solution Approach 1:
The system separates fiber arrangement and layer bonding into distinct steps. Fibers are arranged with high precision on a transfer carrier, then the entire carrier with fibers is transferred to the sheet material in one operation. This eliminates the need for multiple layer bonding steps, simplifying production while maintaining precision.
Solution Approach 2:
The transfer carrier (nonwoven fabric) serves multiple functions: it provides a structure for precise fiber arrangement, acts as a handling medium during transfer, and facilitates its own removal after fiber placement. This self-service capability eliminates the need for additional complex equipment or procedures.
3Strength
If reinforcing fibers are mechanically inserted into adhesive bed, then the process is straightforward, but tensile force absorption capability deteriorates
Solution Approach 1:
The reinforcing fibers are preliminarily arranged with precise alignment on the transfer carrier before transfer to the sheet material. This preliminary alignment ensures that fibers are optimally positioned to absorb tensile forces, and the precise arrangement is maintained throughout the transfer process, achieving both high strength and high precision.
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
Enables precise, distortion-free application of reinforcing fibers with enhanced tensile strength and low weight per unit area, suitable for high-strength applications like sailcloth and surfboards, while maintaining porosity for efficient resin infusion and production processes.
Implementation Method 1
a nonwoven material serving as carrier and a textile layer of reinforcing fibers, in particular of monofilaments or multifilaments or tapes, which are adhesively bonded to the nonwoven material
Implementation Method 2
The open porosity of the nonwovens has a positive effect on the permeation of the binding agents contained in the composite
Data Source
AI summary
A transfer system for a composite material including: a nonwoven as carrier material and a textile layer of reinforcing fibers, wherein the reinforcing fibers consist of mono- or multifilaments or tapes and the carrier material is adhesively bonded to the layer of reinforcing fibers.