Process of and apparatus for making three-dimensional objects

Details Process of and apparatus for making three-dimensional objects Process of and apparatus for making three-dimensional objects

1991-03-04

1993-02-02

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

156155, 156242, 156264, 156267, 1562728, 156292, 1563796, 156501, 156512, 21912165, 21912166, 21912167, 21912172, 21912173, 21912185, 2504921, 264 25, 264152, 264163, 264255, 264257, 264308, 264317, 4251744, 425295, 425297, 4253051, 425308, 425310, 425446, B29C 3508, B29C 6712

Patent

active

051835983

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.

REFERENCES:
patent: 4217168 (1980-08-01), Ridgway et al.
patent: 4247508 (1981-01-01), Housholder
patent: 4752352 (1988-06-01), Feygin
Science et Technologie, No. 2, Feb. 1988, "CFAO: de l'ecran au prototype en moins d'une heure" w/translation.
Industrial Laser Review, vol. 2, No. 8, Jan. 1988, "Instant Models Through Stereolithography", pp. 11 and 13.
English-Language Abstract of Japanese Reference (Kokai) 63-141,725 (published Jun. 14, 1988).

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