Method for Solid Freeform Fabrication

摘要

The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles made of polymers using 3D printing. A layer of prepolymer is deposited on a build plate to form a powder bed. The deposited powder bed is heated to about 50° C. to about 170° C. Then, a solution of activating agent is printed on the powder bed in a predetermined pattern, and a stimulus is applied converting the prepolymer to the final polymer. After a predetermined period of time, sequential layers are printed to provide the three-dimensional article. The three-dimensional object can be cured to produce the three-dimensional article composed of the final polymers.

主权项

1. A method for manufacturing a three-dimensional article, the method comprising:
a. depositing a powder of prepolymer on a build plate to form a powder bed; b. printing a solution of an activating agent at selected locations on the powder bed; c. exposing the printed solution to a stimulus to form a polymer layer of the three-dimensional article; and d. repeating steps (a)-(c) to manufacture remainder of the three-dimensional article.