Process of and apparatus for making three-dimensional objects
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United States of America Patent
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-
Feb 2, 1993
Grant Date -
N/A
app pub date -
Mar 4, 1991
filing date -
Mar 20, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process for obtaining three-dimensional objects, according to which process a sheet (2A, 2B, 2C) is prepared, which sheet is composed of a material, the solubility of which varies when it is subjected to a specific radiation, and of fibers or of a screen for reinforcement, the sheet having a sufficient rigidity to be handled and being capable of adhering on a similar sheet. The sheet is subjected to said radiation (18) in a defined zone, and then a new sheet is fixed onto it and the passing of radiation is recommenced, and then the stack is subjected to a selective dissolving which causes the desired object (31) to appear.
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