초록 ▼

An improved process for making a structure using three dimensional printing techniques is disclosed. Briefly stated, the method can be summarized by the following steps: A first type of powder material is deposited in a defined area to form a first layer. Next, a binder material is applied to certai

An improved process for making a structure using three dimensional printing techniques is disclosed. Briefly stated, the method can be summarized by the following steps: A first type of powder material is deposited in a defined area to form a first layer. Next, a binder material is applied to certain regions of the first type of powder to define a portion of the structure to be formed. And finally, a portion of the unbound powder is removed using a technique such as vacuuming. The foregoing steps are repeated a sufficient number of times to create the desired shape of the structure as defined by the regions held by the binder material.

대표청구항 ▼

1. A process for making a three dimensional structure, comprising the steps of:depositing a powder material in a defined area; introducing a first binder material to at least one portion of said powder material thereby forming at least one region of a first type of solid material; introducing a seco

1. A process for making a three dimensional structure, comprising the steps of:depositing a powder material in a defined area; introducing a first binder material to at least one portion of said powder material thereby forming at least one region of a first type of solid material; introducing a second binder material to at least one portion of said powder material thereby forming at least one region of a second type of solid material, wherein said second binder material is different from said first binder material; leaving a third portion of said powder material unbounded by the binder materials, wherein said third portion has a generally smooth surface; removing at least a portion of said unbound powder material from said generally smooth surface of said third portion to form at least one void; and prior to completing the three dimensional structure and after the step of removing at least said portion of said unbound powder, repeating the steps of depositing said powder material in said defined area and introducing said first binder material.