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US 11,447,629 B2Granted
Core and shell polymers for 3D-printing
AssigneeJabil Inc.
InventorsLuke Rodgers, Erik Gjovik
Life of this patent
Estimating the term…
Abstract
A core/shell polymer material suitable for three-dimensional printing is provided. The core/shell polymer material may include at least one amorphous polymer as a core particle and at least one semicrystalline polymer as a shell material surrounding the core particle.
Claims16
A core/shell polymer material suitable for SLS-type three-dimensional printing, comprising:
- at least one amorphous polymer as a core particle;
- at least one semicrystalline polymer as a shell material surrounding the core particle;
- wherein the semicrystalline polymer surrounding the shell material has a higher transition glass temperature than the at least one amorphous polymer core;
- wherein when the shell is heated above the Tg of the shell material, the core particle, which is already in its liquid phase, diffuses into the shell;
- and
- wherein the transition glass temperature of the shell material will lower due to alloying with the at least one amorphous polymer core particle.
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A method of making a core/shell polymer material suitable for three-dimensional printing, method comprising the steps of:
- placing the core polymer into a solution, suspension, or emulsion;
- adding a lesser quantity of shell polymer than core polymer placed to a solvent;
- adding the core and shell solvents together forming a composition;
- agitating the composition to cause the shell material to adhere onto the core polymer particles;
- coagulating the composition out of solution.
2 more elements
Dependencies are inferred from the claim text.