What this collection delivers
Depolymerisable 3D additives and photopolymer 3D resins for Circular & Reprint.
3D Circular & RePrint additives 3D-ADD DP80 and DP150 turn your photopolymer 3D resins into a closed-loop workflow: liquid → printed solid → heat-release → reusable liquid → re-print.
Instead of scrapping parts or dissolving them with aggressive chemicals, these additives and 3D resins enable clean thermal depolymerisation at a pre-set activation temperature. You collect the liquid, coarse-filter it, optionally add a small dosage of Fine Tuner FT1 top-up, and print again. The result is a practical route to true circularity for open-materials SLA/DLP/LCD platforms.
3Dresyn Circular RePrint Bio is a Depolymerisable Circular 3D resin triggered at 80 or 150ºC.
Two targeted activation windows
• DP80 (Warm Release, ~80 °C): gentle activation that favors clarity and low odor; ideal for sacrificial molds/cores, investment casting patterns, and educational circularity demos.
• DP150 (High-T Release, ~150 °C): designed for parts that must endure higher operating temperatures before release; ideal for industrial fixtures, casting patterns, and tooling where on-demand removal is required.
How it works
Conventional photopolymer 3D resin matrices build a permanent crosslinked network. Circular & RePrint additives introduce a dissociative network motif. When present above a practical threshold, the printed object disconnects under the selected thermal trigger, reverting to a low-viscosity liquid that can be reused on the same printers.
Two modes of use
• Modifier Mode (10–20 wt% in host): creates assisted removal pathways for sacrificial structures and maintenance workflows. Parts soften and open release channels at the trigger but may not fully re-liquefy.
• RePrint Mode (40–60 wt% in host): establishes a percolating dissociative network; at the trigger, the entire part reverts to a reusable, printable liquid.
Where it’s most effective
• Clear to lightly pigmented SLA/DLP/LCD resins at 385–405 nm.
• Hosts with low–moderate crosslink density (tough-clear, rigid-tough, flexible clear).
• Applications that benefit from clean removal, rapid iteration, and material reuse.
Selector
Which version should I choose?
• DP80 — Warm Release (~80 °C): gentle activation, clarity-friendly; best for sacrificial molds/cores, lost-pattern workflows, and training/education.
• DP150 — High-T Release (~150 °C): robust service before removal; best for fixtures, industrial patterns, casting master models, and parts that see heat before planned release.
Application Gallery
• Sacrificial molds & cores: remove the inner geometry by mild heating (DP80) or high-T release (DP150) without solvents.
• Investment casting & jewelry: print patterns, release on schedule, and reuse the liquid.
• Tooling & fixtures: print, use, then release on-demand to recover material.
• Process development: a practical circularity testbed for materials R&D and sustainability programs.
• Education: demonstrable “print → release → re-print” loop for labs and makerspaces.
FAQs
Q1. Will parts actually become a liquid I can re-print?
Yes—when used in RePrint Mode (40–60 wt% in host) and activated at the specified temperature, parts revert to a flowable liquid. In Modifier Mode (10–20 wt%), you’ll primarily obtain assisted removal/softening rather than full re-liquefaction.
Q2. How many reuse cycles can I expect?
Cycles depend on the printer, geometry, and post-cure. As a guide, validate 3–5 cycles and track: mass recovery, viscosity of the recovered liquid (target ±20% vs. virgin), and exposure delta (target ≤25%).
Q3. Do I need to add photoinitiator after recovery?
Sometimes. If re-print speed slows, add a small top-up to the recovered liquid and re-optimize exposure on coupons.
Q4. Will it foam or bubble during release?
These additives are designed for clean thermal release. Use gentle heating and allow time for the liquid to flow out; avoid rapid temperature overshoots.
Q5. Does pigmentation or filler loading affect performance?
Yes. High opacity can slow both release and re-cure. Keep pigments/fillers moderate or validate with exposure adjustments and geometry trials.
Q6. What about mechanical properties before release?
Printed properties depend on the host resin and dose. DP150 is favored when higher in-service temperature is required before activation. Always test tensile, flexural, and HDT per your internal ISO practices.
Q7. What post-cure should I use?
Use the minimum-effective UV dose to reach mechanical targets. Over-post-cure can densify the network and slow release kinetics.
Q8. Which hosts work best?
Open-materials acrylate/methacrylate resins at 385–405 nm, especially clear/tough-clear, rigid-tough, and flexible clear. Extremely high-functionality crosslinkers may hinder re-liquefaction.
Q9. Is this for medical or implantable applications?
No. These products are for industrial/R&D. For regulated applications, request written confirmation and perform full compliance testing.
Q10. How should I document circularity for my QA/ESG team?
Run and report: mass recovery (%), viscosity of recovered liquid, exposure delta (%), and pass/fail on a standard part. Include photos of the part before/after, and the recovered liquid.
Quick Start — Validation Playbook
1) Prepare two sets of 2–4 mm plates: baseline and DP80/DP150 at your target dose.
2) Print & post-cure to your standard minimum-effective spec.
3) Record baseline: exposure times, green strength, mass.
4) Activate: DP80 at 70–90 °C, DP150 at 145–155 °C until flow completes.
5) Collect the liquid, coarse-filter (25–50 μm), measure mass recovery (%).
6) Measure viscosity of recovered vs. virgin (room temperature; same spindle/speed).
7) Top-up Fine Tuner FT1 only if needed; re-print coupons; log exposure delta (%).
8) Repeat 3 cycles and note changes in clarity, color, and mechanics (ISO methods per 3Dresyns testing standards).
Safety & Handling
Industrial/R&D use only. Not evaluated for implantable, medical, or food-contact applications unless specified in writing. Use standard PPE (gloves, goggles, lab coat) and adequate ventilation. Avoid prolonged exposure to intense light during mixing and handling. Store sealed at 15–25 °C, dry and dark. Consult the product SDS before use.
