Production of objects

Details Production of objects Production of objects

1990-12-14

1992-06-09

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

156 64, 1562735, 1562755, 2504921, 264 407, 264298, 264308, 364476, 427 8, 427 531, 427 541, B29C 3508, B29C 4100

Patent

active

051204762

ABSTRACT:
Three-dimensional objects are produced by the polymerization of a photopolymerizable liquid medium with the aid of high-energy radiation by continuously introducing the liquid medium in lamina form from a casting means onto the surface of a carrier liquid which has a higher specific gravity than the photopolymerizable medium and is not miscible therewith. This lamina is polymerized by irradiation to form a laminar, two-dimensional polymer layer, then the surface of the carrier liquid is raised and another lamina of the photopolymerizable medium is introduced onto the surface and polymerized to form a further polymer layer which combines with the preceding one. These steps are repeated until the three-dimensional object is formed. The steps of forming the polymer lamina and raising the surface of the carrier liquid may be computer controlled.

REFERENCES:
patent: 4575330 (1986-03-01), Hull
patent: 4749347 (1986-10-01), Valavaara
patent: 4961154 (1990-10-01), Pomerantz et al.

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