3Dresyns develops continuous and semi-continuous multi-component resin feeding concepts to enable controlled variable or gradient compositions and properties in SLA, DLP, and LCD 3D printed materials.
Why variable-composition printing matters
MultiJet and PolyJet inkjet processes can print multiple resins simultaneously using multi-head architectures, enabling multi-component materials in a single build. In contrast, conventional SLA, DLP, and LCD processes typically print a single material per job, which limits affordable multi-material manufacturing with vat photopolymerization.
Semi-continuous (semi-batch) multi-resin feed
Semi-continuous (semi-batch) feeding introduces one or more resins with distinct compositions into the resin tank either continuously or in controlled increments during printing. Continuous stirring can support rapid mixing and homogeneous resin states when desired.
Continuous multi-resin feed with optional recirculation (loop)
Continuous feeding concepts can be implemented with or without a recirculation loop. Pump-driven recirculation enables tighter control of composition as a function of time and build height, supporting variable or gradient material compositions along the z-direction.
With these approaches, existing resin tanks can be adapted into continuous or semi-continuous multi-resin feed reactors, enabling variable-composition 3D printing without changing the fundamental printer platform.
Supported printer architectures
These processes can be implemented in Top-Down, Bottom-Up, and CLIP (Continuous Liquid Interface Production) printer configurations.
Enabling gradients and tailored functional profiles
Continuous and semi-continuous resin feeding enables compositional gradients along the z-direction and supports the design of gradient properties using resins with differentiated compositions and performance profiles.
Depending on resin feed strategy, flow rate, and the selected material set, representative gradients can include:
- Compositional gradients
- Crosslink density gradients
- Hardness-to-softness gradients
- Rigidity-to-flexibility gradients
- Polarity gradients
- Color gradients
- Conductivity gradients
Monitoring and traceability of gradients
Fluorescent and other markers can be used to monitor or track compositional gradients and the associated property changes in printed materials.
Custom development
3Dresyns can custom-design systems and workflows to predict and control complex variable or gradient compositions and resulting properties of 3D printed materials using SLA, DLP, and LCD printing.
Contact: info@3dresyns.com