METHOD FOR PRODUCING A CORE AND SHELL POLYMER FOR 3D PRINTING
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- JABIL INC
- Filing Date
- 2018-02-08
- Publication Date
- 2026-07-15
AI Technical Summary
Existing polymers used in powder-based 3D-printing, such as ABS, ASA, PMMA, SAN, PEI, and PES, lack a broad enough operating window between melting and recrystallization temperatures, leading to high residual stresses and deformation during the printing process, making them unsuitable for SLS, HSS, and MJF applications.
Developing a core/shell polymer structure where an amorphous core is surrounded by a semicrystalline shell with a higher glass transition temperature, allowing the core to diffuse into the shell upon heating, thereby lowering the overall glass transition temperature and reducing residual stresses, enabling the polymer to be printed without deformation.
The core/shell polymer composition reduces internal stresses and maintains shape during printing, allowing for successful additive manufacturing without substantial deformation, while maintaining a lower elastic modulus and wider operating window, suitable for SLS, HSS, and MJF processes.