Carimatec applies DLP 3D printing to speed production of clear-aligner molds

# What Carimatec is doing

# Why dental models are a suitable use case Clear-aligner treatment requires a sequence of slightly different models for each patient. That creates many short, highly individualized production runs—exactly the opposite of traditional manufacturing that favors large batches of identical parts. Carimatec sees that workflow as the point where industrial 3D printing becomes economically practical.

# How the workflow works in practice A dental scan becomes a digital model. The slicer software prepares a set of molds representing successive treatment stages. The printed models are then used in vacuum-forming to make the clear trays.

• A single print run can produce roughly 50 to 60 molds in about 60 to 90 minutes.
• Carimatec says its printers have produced more than 500,000 clear-aligner setup molds to date.

# Core technologies and their purpose

• DLP exposure: Instead of a laser tracing points, DLP projects a full-layer image that cures an entire layer at once. That gives an intrinsic speed advantage for layer-based curing.
• C-CAT (Carima Continuous Additive Technology): Lowers separation force between cured layer and vat film so printing can proceed more continuously instead of repeating lift, peel, refill cycles. Company material cites speeds above 40 cm per hour and up to 60 cm per hour under certain conditions.
• S-BAT: Calibrates overlaps when multiple optical engines cover a wide build area so seams and inconsistent curing are reduced. This is about surface uniformity across larger prints.

# Materials and operational control Carimatec supplies a lineup of resins—elastomeric, high-temperature, ceramic, and flame-retardant types—and tunes exposure settings per material (UV intensity, curing time). Accepting third-party resins is possible, but the company argues that vertically integrated control can improve repeatability for customers who prioritize consistent output over material experimentation.

# Automation and throughput claims The DM400 model is positioned as an automated industrial system that can print, remove, clean, cure, dry, and collect parts with limited operator intervention. Carimatec states this workflow can yield more than 800 units daily in a configured setup.

# Market fit and open questions Potential addressable markets include custom footwear, automotive interior components, and dental models, but each market has distinct certification, durability, and economics requirements. The current practical question is whether claimed speed gains hold up with real-world materials, finish requirements, and quality-control needs.

# Bottom line