Selective laser sintering powder recycle system

Details Selective laser sintering powder recycle system Selective laser sintering powder recycle system

2011-02-15

2011-02-15

Ewald, Maria Veronica D (Department: 1744)

Plastic article or earthenware shaping or treating: apparatus

With means to gather excess or rejected stock material

C425S217000, C425S174400, C425S375000, C264S308000, C264S497000

Reexamination Certificate

active

07887316

ABSTRACT:
A method and apparatus for forming three-dimensional objects by laser sintering that includes the use of dense phase pneumatic conveying to internally recycle overflow powder, and to thoroughly blend overflow, recovered and virgin powder to provide a consistent powder feed mix to a laser sintering machine. Overflow powder from the laser sintering machine is recovered and recycled back into the laser sintering machine for reuse. The approach results in a compact and reliable powder recycle system with complete blending and minimum attrition to the handled powder.

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