Method for making a mould
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United States of America Patent
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Dec 14, 1999
Issued Date -
N/A
app pub date -
May 4, 1998
filing date -
Nov 4, 1995
priority date (Note) -
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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.
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