Post-curing device with heating and cooling system

The system addresses the limitation of uniform material properties in stereolithography by selectively post-curing 3D objects with a movable light source and chamber, enabling variable properties for improved dental restorations.

WO2026122591A1 Publication Date: 2026-06-11SPRINTRAY INC
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Patent Information

Application Number
PCT/US2025/057762
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-02
Filing Date
2025-12-02
Publication Date
2026-06-11

AI Technical Summary

Technical Problem

Current stereolithography 3D printing techniques are limited in generating 3D objects with varying material properties, such as variable color shade, opacity, and flexural strengths, which are desirable for applications like dental restorations.

Method used

A system and method for selectively post-curing 3D-printed objects using a processing module to determine a curing toolpath and a selective post-curing chamber with a light source to emit curing light along a predetermined path, achieving variable properties in different regions of the object.

Benefits of technology

Enables the creation of 3D objects with variable properties like color shade, opacity, and flexural strengths by selectively post-curing using a movable light source assembly and a curing chamber, enhancing the capabilities of stereolithography for dental applications.

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Abstract

The invention is a device and a method for post-curing a three-dimensionally (3D) printed object. The device includes a curing chamber with a removable platform adapted to house the 3D-printed object. A curing light assembly emits curing light onto the 3D-printed object and an airflow module generates an airflow within the curing chamber. A heating module controls a temperature of the airflow. The airflow module and heating module simultaneously dissipate residual heat from the curing chamber and heat the airflow circulated within the curing chamber to facilitate curing the 3D-printed object. The method includes providing the curing chamber with the curing light, circulating an airflow within the curing chamber, emitting a curing light onto the 3D-printed object, and, simultaneously, heating the airflow circulated within the curing chamber to facilitate curing the 3D-printed object and dissipating a residual heat from the curing chamber.
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