Method for making a forming structure
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United States of America Patent
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Feb 8, 2005
Issued Date -
N/A
app pub date -
Mar 14, 2003
filing date -
Dec 20, 2002
priority date (Note) -
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Abstract
A method for making a forming structure. The method comprises the steps of applying a coating of a liquid photosensitive resin to a foraminous element and juxtaposing thereto a first mask comprising both opaque and transparent regions. The photosensitive resin is exposed to light having an activating wavelength to induce partial curing of the photosensitive resin in those regions which are in register with the transparent regions of the first mask. After removal of uncured resin, the process is repeated with a second mask. After removal again of uncured resin, the foraminous element and partially cured resin is immersed in an oxygen-free environment and exposed to light having an activating wavelength to filly cure the partially cured resin to form an apertured forming structure having a plurality of protrusions thereon.
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