Method for making a mould

Details Method for making a mould Method for making a mould

1998-05-04

1999-12-14

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Stereolithographic shaping from liquid precursor

264219, 264308, 2643281, B29C 3508, B29C 4102

Patent

active

060012986

ABSTRACT:
A method for making a mold including the steps of (a) forming a layer of a photocurable composition containing a U.V. transparent filler; (b) irradiating the layer formed in step (a) with light in a predetermined pattern thereby forming a solid cross-sectional layer of the desired mold; and (c) repeating steps (a) and (b) on the previously formed solid cross-sectional layer until the mold is formed. The filler is preferably phyllosilicate clay mineral and the mold has heat and pressure shock resistant properties making it particularly useful for injection molding.

REFERENCES:
patent: 4618632 (1986-10-01), Su
patent: 4822665 (1989-04-01), Scholz et al.
patent: 5641448 (1997-06-01), Yeung et al.
patent: 5807519 (1998-09-01), Suzuki et al.
patent: 5874041 (1999-02-01), Matsumura et al.
Modern Plastics International, vol. 24, No. 11, Nov. 1, 1994, pp. 25/26, XP000521262 "Prototyping that Bypasses Model Construction", p. 25, paragraph: "Photoformable resin allows concurrent engineering".

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