Natural Food-Derived Fusing Compounds for Consistent Polymer 3D Printing
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Solution Overview
Problem
Existing 3D printing technologies face challenges in achieving rapid production speed, part consistency, and method flexibility, particularly in the use of polymeric materials, while maintaining the ability to produce high-quality, customizable products.
Innovation Solution
A three-dimensional printing kit and method utilizing a build material composed of polymeric particles and a fusing agent containing a natural food-derived compound with an absorption peak from 340 nm to 780 nm, which is dispersed in an aqueous liquid vehicle, allowing for selective fusion of polymeric particles through electromagnetic radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional 3D printing methods are used with polymeric materials, then production speed and part consistency can be improved, but method flexibility and customization capability deteriorate
Solution Approach 1:
The invention changes the chemical parameters of the build material by using polymeric particles with specific functional groups that can undergo photo-induced fusion reactions. This allows the same base material to be processed through different printing methods (selective laser sintering, digital light processing, stereolithography) by adjusting only the activation method, thus improving productivity while maintaining flexibility.
Solution Approach 2:
The polymeric particle build material is designed to be universally compatible with multiple 3D printing technologies. The particles contain photoreactive functional groups that enable them to respond to different energy input methods (laser, UV light, visible light), making a single material system applicable across various printing platforms and enhancing both productivity and adaptability.
2Productivity
If selective laser sintering is used for fusing polymeric particles, then production speed is improved, but energy consumption and heat damage to materials worsen
Solution Approach 1:
The invention replaces the mechanical/thermal fusion mechanism of selective laser sintering with a photochemical fusion mechanism. Instead of using high-power lasers to melt and fuse particles through thermal energy, the photoreactive functional groups on the polymeric particles undergo photo-induced reactions that directly bond particles together, significantly reducing energy consumption while maintaining production speed.
Solution Approach 2:
The invention utilizes photo-induced phase transitions in the functional groups of polymeric particles. When exposed to appropriate wavelengths of light, these groups undergo rapid chemical state changes that facilitate particle fusion without requiring sustained high temperatures, thereby reducing overall energy consumption while maintaining rapid production rates.
3Manufacturing precision
If high-resolution photolithography is used for 3D printing, then manufacturing precision is improved, but production speed and material flexibility deteriorate
Solution Approach 1:
The invention segments the build material into discrete polymeric particles with photoreactive functional groups on their surfaces. This segmentation allows for layer-by-layer construction with high precision (as each particle can be individually positioned and fused) while enabling faster processing speeds compared to traditional photolithography that requires curing entire liquid resin layers.
Solution Approach 2:
The invention uses composite polymeric particles that combine structural polymer material with photoreactive functional groups. This composite structure enables the material to respond to light with high precision for accurate particle fusion while allowing for faster build rates compared to conventional photolithography resins, thus improving both manufacturing precision and productivity.
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 rapid and consistent production of high-quality, customizable 3D objects with enhanced flexibility, utilizing natural food-derived compounds for efficient fusion and temperature boosting, suitable for direct food contact.
Implementation Method 1
The natural food-derived fusing compound can have an absorption peak from about 340 nm to about 780 nm
Implementation Method 2
a fusing agent containing a natural food-derived compound with an absorption peak from 340 nm to 780 nm, which is dispersed in an aqueous liquid vehicle
Data Source
AI summary
A three-dimensional printing kit can include a build material and a fusing agent. The build material can include from about 80 wt % to 100 wt % polymeric particles having a D50 particle size from about 10 μm to about 150 μm. The fusing agent can include an aqueous liquid vehicle and natural food-derived fusing compound dissolved or dispersed therein. The natural food-derived fusing compound can have an absorption peak from about 340 nm to about 780 nm.