Hyper-elastic Sandwich Panel FFF Printing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional 3D printing methods face challenges in manufacturing multi-layered, multi-material composite sandwich structures due to adhesion issues between rubber-like materials and polymeric materials, particularly with flexible filaments and resins, which lack compatibility and result in poor printing outcomes.
Innovation Solution
A method involving FDM technology to create a hyper-elastic 3D sandwich panel by regulating the temperature of each printed layer to match the melting point of subsequent layers, using a central composite rubber core between glass-fiber reinforced upper and lower sandwich face layers, and employing a bonding agent and thermal monitoring for enhanced adhesion and temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional FDM printing is used with flexible rubber-like filaments, then the printing process becomes difficult due to filament softness and bending, but using rigid filaments improves printing stability while reducing flexibility of the final product
Solution Approach 1:
The patent applies parameter changes by precisely controlling the temperature of each printed layer to match the melting point of the subsequent layer material. This temperature regulation enables the extrusion of flexible rubber-like materials while maintaining printing stability, as the controlled thermal parameters prevent filament bending and ensure proper layer adhesion without compromising the flexibility of the final product.
Solution Approach 2:
The patent uses composite materials by creating multi-layered sandwich structures with different material properties. The core uses flexible rubber-like materials for elasticity, while the face layers use glass-fiber reinforced nylon for structural strength and dimensional stability during printing. This composite approach allows each layer to contribute its optimal properties, resolving the contradiction between printing stability and final product flexibility.
2Reliability
If rubber-like materials are printed directly on polymeric materials, then adhesion problems occur due to material incompatibility, but using compatible materials reduces flexibility
Solution Approach 1:
The patent regulates the temperature parameters during printing to match the melting points of different materials at their interfaces. This thermal parameter control ensures proper adhesion between rubber-like core layers and polymeric face layers, overcoming material incompatibility issues while preserving the flexibility characteristics of the rubber material in the final composite structure.
Solution Approach 2:
The patent introduces an intermediary approach by using a sandwich structure design where the rubber-like core is bonded to glass-fiber reinforced polymeric face layers. The controlled temperature matching acts as a mediator that enables adhesion between incompatible materials, while the composite structure maintains the flexibility of the core material.
3Ease of manufacture
If multiple materials are stacked in different layers, then adhesion between layers becomes problematic, but using single material simplifies printing while reducing functional performance
Solution Approach 1:
The patent simplifies the multi-material printing process by regulating temperature parameters to match the melting points of different materials. This parameter control enables seamless layer bonding between rubber-like and polymeric materials without requiring complex printing procedures, thus maintaining ease of manufacture while ensuring reliable layer adhesion.
Solution Approach 2:
The patent uses composite materials in a sandwich structure configuration that combines rubber-like core layers with glass-fiber reinforced polymeric face layers. This composite approach enables functional differentiation (flexibility from core, strength from faces) while the temperature-matching protocol ensures reliable bonding between the different material layers.
4Ease of operation
If flexible filaments are pushed through the extruder, then the filament bends or twists due to lack of rigidity, but increasing rigidity reduces flexibility of the printed product
Solution Approach 1:
The patent controls the temperature parameters during extrusion to match the melting point of the flexible rubber-like material. This thermal parameter regulation softens the material at the extrusion point, enabling smooth passage through the nozzle without bending or twisting, while the material regains its flexibility after deposition and cooling, thus resolving the contradiction between extrusion stability and final product flexibility.
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 method achieves successful printing of hyper-elastic sandwich panels with superior flexibility and ability to maintain shape, overcoming adhesion problems and ensuring proper layer bonding through precise temperature control and material selection.
Implementation Method 1
Fused deposition modeling (FDM) is one of the most widely used additive manufacturing processes for fabricating prototypes and functional parts in common engineering plastics. The process is based on the extrusion of heated feedstock plastic filaments through a nozzle tip to deposit layers onto a platform to build parts layer by layer
Implementation Method 2
employing a bonding agent and thermal monitoring for enhanced adhesion and temperature control
Implementation Method 3
regulating a temperature of each printed layer to match melting point temperature of a consecutive layer being subsequently printed on top of a previously printed layer
Data Source
AI summary
A method for manufacturing a hyper-elastic three-dimensional (3D) sandwich panel is disclosed, the method comprising printing a plurality of layers, the plurality of layers comprising a central composite core and upper and lower sandwich face layers; and regulating a temperature of each printed layer to match melting point temperature of a consecutive layer being subsequently printed on top of a previously printed layer, wherein the plurality of layers are printed one layer at a time. The multi-layered and multi-material hyper-elastic three-dimensional (3D) sandwich panel is a central composite rubber core stacked between upper and lower sandwich face layers made of reinforced glass-fiber, wherein the central composite rubber core further comprises a core lower face layer, a central core layer and a core upper face layer.